China Xiamen Juguangli Import & Export Co., Ltd Company News

Silicone products, with its excellent high and low temperature resistance, waterproof, flame retardant, wear resistance, oil resistance and other excellent characteristics, widely used in all aspects of our lives, from kitchen supplies to electronic products, from medical equipment to auto parts, silicone products everywhere. However, behind these applications, the tensile strength of silicone products is a frequently mentioned but not fully known performance indicator.   Tensile strength, as an important performance index of silicone products, refers to the force required on each range unit to cause a sample of silicone material to tear. It reflects the ability of silicone material to resist damage when stretched by external forces. In practical applications, the tensile strength of silicone products directly affects the service life, safety and reliability of the products. For example, in the medical field, silicone catheters need to withstand a certain amount of pressure without breaking, which requires it to have a high tensile strength; In auto parts, silicone seals need to have good elasticity and toughness to cope with a variety of complex environmental conditions, which is also closely related to its tensile strength.   The tensile strength of silica gel products is affected by many factors, including the type of silica gel, formula, production process and test conditions. First of all, the type of silica gel has a direct impact on the tensile strength. Common types of silicone include hot sulfurized solid organic silicone rubber, fluorosilicone rubber and liquid silicone rubber. These different kinds of silica gel have significant differences in tensile strength. For example, the tensile strength range of hot sulfurized solid organic silicone rubber is usually between 4.0-12.5MPa, while the tensile strength range of fluorosilicone rubber is between 8.7-12.1MPa. The tensile strength of liquid silicone rubber is relatively low, generally between 3.6-11.0MPa.   Secondly, the formula of silica gel also has an important impact on tensile strength. The type and amount of ingredients such as filler, vulcanizing agent and plasticizer in the formula will affect the tensile strength of silica gel. For example, the addition of filler can increase the hardness and strength of the silica gel, but too much filler may also cause the tensile strength of the silica gel to decrease. The selection and dosage of vulcanizing agent directly affect the degree of vulcanization and crosslinking density of silica gel, thus affecting its tensile strength. The addition of plasticizer can improve the flexibility of silica gel, but too much plasticizer will also reduce its tensile strength.   The production process also has an important influence on the tensile strength of silica gel products. In the production process of silicone products, molding, vulcanization, stripping and other process steps will affect the tensile strength of the product. For example, the pressure and temperature control during molding, the choice of vulcanization time and temperature, and the mode of release will affect the internal structure and performance of silicone products, thus affecting its tensile strength.   Test conditions are also one of the important factors affecting the tensile strength of silicone products. When testing the tensile strength of silicone products, it is necessary to follow the prescribed test methods and standards. Different test methods and standards may lead to differences in test results. Therefore, when comparing the tensile strength of different silicone products, it is necessary to ensure the consistency of the test conditions and test methods.   In addition to the above factors, the tensile strength of silicone products may also be affected by other factors, such as environmental factors (such as temperature, humidity, etc.), use time and use mode. At high or low temperatures, the tensile strength of silicone products may change. Prolonged use or improper use may also lead to a decrease in the tensile strength of silicone products.   In practical applications, understanding the tensile strength of silica gel products is of great significance for selecting suitable silica gel materials, designing reasonable product structure and ensuring product quality and safety. For example, in the medical field, it is necessary to choose silicone materials with high tensile strength to make medical devices such as catheters to ensure that they will not break or leak during use; In the field of electronics, it is necessary to select silicone materials with appropriate tensile strength to make electronic accessories such as seals and shock absorbers to ensure that they have good sealing and shock absorption performance.   In order to improve the tensile strength of silicone products, a variety of measures can be taken. For example, by optimizing the formula of silica gel, selecting the appropriate type and amount of ingredients such as filler, vulcanizer and plasticizer; Improve the production process, optimize the parameters and control conditions of molding, vulcanization, demoulding and other process steps; And strengthen the quality control and testing means to ensure that the tensile strength of silicone products meet the design requirements.   The tensile strength of silicone products is a complex and important performance index. It is affected by many factors, including the type of silica gel, formula, production process and test conditions.

Silicone sealing ring, as an indispensable sealing element in modern industry, with its excellent high temperature resistance, corrosion resistance, anti-aging and other characteristics, in machinery, automotive, electronics, food and other fields have been widely used. The formulation of its standard specifications is not only related to the performance of the product, but also directly affects the interchangeability and use effect of the product. 1. Size specifications The size of the silicone sealing ring is the primary consideration in the selection and use process. In general, the size of the silicone sealing ring includes three main parameters: inner diameter, outer diameter and thickness. On the market, the internal diameter of common silicone seals ranges from 1mm to 1200mm, the outer diameter ranges from 2mm to 1500mm, and the thickness is between 0.5mm and 40mm. Different shapes of silicone seals, such as O-rings, U-rings and V-rings, their size specifications are also different. For example, the inner diameter and outer diameter of the O-ring can range from 1mm to 1200mm, and the thickness can range from 0.5mm to 12mm; The inner diameter and outer diameter of the U-ring can be from 2mm to 1200mm, and the thickness can be from 1mm to 20mm. In addition, the size specifications of the silicone sealing ring are also subject to multiple constraints of international standards, industry standards and enterprise standards. For example, the Japanese standard, the American standard and other international standards have detailed provisions on the size of O-rings, such as ID1.801.90, ID2.801.90 and other specifications; Domestic enterprises may develop more detailed specifications according to their own needs. Therefore, when selecting the silicone sealing ring, it is necessary to select according to the specific application scenarios and needs, and refer to the relevant standards. 2. Material requirements The material requirements of the silicone sealing ring are equally strict. According to the standard requirements, the silicone sealing ring should be made of silicone rubber material that meets the requirements, and the material should have the characteristics of high temperature resistance, corrosion resistance and aging resistance. At the same time, the physical and chemical properties of silica gel materials should also meet the requirements of use, such as tensile strength, tearing strength, hardness, resilience and so on. In addition, in order to ensure the safety and environmental protection of products, silicone materials also need to pass relevant testing and certification, such as FDA food grade certification, RoHS environmental protection directives. 3. Performance requirements The performance requirements of silicone seals are also an important part of their standard specifications. According to the standard requirements, the silicone sealing ring should be able to withstand a certain pressure, temperature and chemical corrosion conditions, while having high wear resistance, fatigue resistance and mechanical strength. In harsh environments, silicone seals should be able to maintain good sealing performance and stability, not affected by rain, snow, humidity, ozone, solar ultraviolet and other external factors. In addition, the silicone sealing ring should also have good electrical insulation and flame retardant properties to ensure the safe operation of the equipment. 4. Production and testing The production process of silicone seals also follows strict standards and processes. From raw material preparation to formulation, rubber calendering, molding, surface treatment to product quality inspection and packaging, every step is carried out in strict accordance with the relevant standards. In the production process, it is also necessary to carry out various performance tests on the silicone sealing ring, such as dimensional inspection, appearance inspection, physical performance testing, etc., to ensure that the product meets the standard requirements. At the same time, manufacturers also need to establish a sound quality management system and after-sales service system to provide high-quality products and high-quality service.   The standard specifications of silicone sealing rings cover many aspects such as size, material and performance requirements. The development and implementation of these standards not only ensure the performance and use effect of silicone seals, but also promote their wide application in various fields.

In the rubber industry, with the development of production and the improvement of the performance of rubber products, the problem of increasing heat generation in the process of rubber processing has appeared. Therefore, how to ensure the safety in the process of processing has become an important topic. Now the main method is to add a small amount of anti-coke agent in the process to improve the safety of the processing process, increase the storage life of the rubber or glue, when adjusting the vulcanization system is difficult to achieve the required operation safety, adding anti-coke agent can often easily meet the requirements of the scorch performance of the rubber. In the process of storage and processing, due to the effect of heat, early vulcanization (cross-linking) will occur and lose the fluidity and reprocessing ability, which is the scorch phenomenon. The burning of rubber is one of the common problems in the process of rubber processing. The burning problem is more likely to occur in the modern characteristics of high temperature, fast and efficient processing technology and the mixing agent that is easy to cause burning (such as reinforcing resin, intermethyl white system adhesive, fine particle carbon black, etc.). Coke burning can be solved by adjusting the vulcanization system, but be careful to change the properties of the compound; The storage or processing conditions of the adhesive can be improved by cooling, but complex equipment is needed, and the use of anti-coke agent is a simple and easy way to prevent scorch. Therefore, the anti-coke agent has become an important operating assistant for the safety of rubber processing.

Basic testing standards for silicone products   1. Material safety testing First of all, the material safety of silicone products is the primary consideration. This includes harmful substances such as heavy metals in silica gel raw materials (lead, mercury, cadmium, etc.), harmful additives (such as plasticizers), volatile organic compounds (VOCs), etc. These tests are usually carried out in accordance with relevant international or domestic safety standards, such as the European Union's ROHS directive and REACH regulations As well as China's GB/T standards, etc., to ensure that the product is harmless to the human body and meets environmental protection requirements.   2. Physical performance test Physical property test is an important step to evaluate the basic properties of silicone products. This includes, but is not limited to, hardness testing (e.g. Shaw Hardness), tensile strength, tear strength, resilience, wear resistance, aging resistance, etc. These tests are intuitive The durability and service life of silicone products ensure their stability and reliability in various application environments.   3. Weather resistance test The weather resistance test of silicone products is also essential. This includes high temperature resistance, low temperature resistance, ultraviolet resistance, ozone resistance and so on Tests to simulate the use of products in extreme environments to assess their performance changes and degree of aging. Especially for Outdoor use of silicone products, such as seals, gaskets, etc., weather resistance testing is particularly important.   Inspection standards for specific application areas   1. Silicone products for medical devices For medical device silicone products, in addition to the above basic testing, biocompatibility testing is also required. This includes cells Toxicity test, sensitization test, intradermal irritation test, etc., to ensure that the product will not cause adverse reactions when in contact with the human body Yes. At the same time, it also needs to meet the relevant regulations and standards for medical device registration, such as ISO 10993 series standards.   2. Food grade silicone products The testing standards of food-grade silicone products are more stringent, and it is necessary to ensure that the product will not release harmful substances when in direct contact with food Quality. This includes the purity requirements of the silica gel raw material, the testing of migratory substances (such as heavy metals, plasticizers, etc.), smell and taste Dao test, etc. At the same time, it also needs to meet the regulatory requirements of various countries on food contact materials, such as the US FDA and the EU LFGB Let's wait.   3. Electronic and electrical silicone products Electronic and electrical silicone products need to be tested for electrical performance because of the particularity of their application environment. This includes insulation resistance Voltage resistance testing, flame retardant testing, etc., to ensure that the product will not cause electrical safety problems during use. In addition For some silicone products for specific purposes, such as conductive silicone buttons, electrical conductivity testing is also required.

In modern industry and daily life, the application of electricity is everywhere, and the accompanying electrical safety problems are increasingly attracting people's attention. Silicone products have a wide range of applications today, silicone gloves as a common protective equipment, its insulation and anti-electrical properties play an important role in ensuring the safety of personnel.   1. Insulation performance of silicone gloves Silicone gloves are protective gloves made of silicone material with good elasticity and wear resistance. More importantly, the silicone material itself has a high resistivity, which makes the silicone gloves have excellent insulation properties. When the human body comes into contact with the charged body, the silicone gloves can effectively block the current path and reduce the damage of the current to the human body. Therefore, silicone gloves are widely used in electric power, electronics, chemical and other industries need to contact live bodies.   2. Electric resistance of silicone gloves The electric resistance of silicone gloves is not only related to its material characteristics, but also closely related to its production process, thickness, use method and other factors. Generally speaking, the higher the insulation resistance of silicone gloves, the better their electrical resistance. At the same time, the thickness of the gloves is also an important consideration, and thicker gloves usually have better insulation. However, over-thick gloves can affect hand flexibility, so insulation and comfort need to be weighed in practical applications.   3. Application of silicone gloves Silicone gloves are widely used in the following situations because of their excellent insulation and anti-electrical properties: Power industry: When conducting power equipment maintenance, maintenance and other operations, silicone gloves can effectively protect staff from electric shock damage. Electronic industry: In the process of production and maintenance of electronic products, silicone gloves can prevent electrostatic damage to sensitive components. Chemical industry: When handling certain chemicals, silicone gloves can effectively isolate chemical substances from skin contact, reducing the risk of chemical burns.

We know that most of the back of the silicone keys are designed with a conductive structure, generally conductive black particles or conductive ink. And this silicone key will have an elastic wall structure, so that the key can have the function of pressing and playing up. So how should the elastic wall structure of the silicone key be determined?   Many customers do not know how to design the elastic wall at the time of design, Xiao Bian also summed up some experience after a few years in the professional custom silicone button Bohao electronics factory. In fact, most of the design of the key is a preliminary appearance design, and the specific elastic wall part is designed by the engineer of the key customization factory or the key mold manufacturer according to the elastic requirements of the key.   The elastic requirements of most silicone keys will be about 200g, and the elastic requirements of Europe and the United States may be a little higher than that of Asia. After knowing the elasticity requirements, the key customization manufacturer will design the thickness, Angle, stroke, etc., of the inclined wall, so that the elasticity of the key can be controlled to a range.  

"I want the silicone buttons to conduct electricity. What are the ways?" There are a lot of customers will ask this question, let me tell you the conductive rubber key conductive way!   Conductive black particles. This conductive black particle is the most common and the most common, can be seen on many keys, usually circular, the surface is grid pattern, resistance value of about 100Ω. The shape can also be customized, requiring an additional black die for punching.   Conductive ink. Paste inks made of conductive materials (gold, silver, copper and carbon) dispersed in the binder have a certain degree of conductive properties, and when the ink is poorly dried, the resistance value will increase, so it is also necessary to bake dry under infrared light.   Gold plated grain. Conventional conductive black particles have a resistance value of about 100Ω, while gold-plated particles can control the resistance value within 1Ω. The lower the resistance value, the higher the sensitivity of the key, so gold-plated particles are often used on silicone keys with higher sensitivity requirements. Such as military keys, car keys, instruments and instruments silicone keys and so on.

Many customers who do not know much about silicone products often ask a question, that is, "Silicone products have production molds, why do you want to open sample molds?" Why waste time and effort to open another set of sample molds? But for the sample mold, it is a very important link before production.   The necessity of opening the test mold is analyzed from two angles: 1. Customers When the customer develops and designs a new silicone product, we may still have some unknowns about this new product, such as whether the performance structure meets the expected use effect. At this time, it is necessary to test the mold proofing, rather than directly open the large mold, which can solve the customer's sample requirements for the silicone products, but also save the cost of the customer, and for us to better scientific and effective solution to customer problems. 2. Silicone manufacturers The first test mold can reduce the risk of mold opening of the silicone mold, and occasional repair may not have much impact on the mold, but too much repair will affect the subsequent production of the mold, because the more times the mold is repaired, the durability of the mold itself will not be bad. If the sample mold is first opened to determine the size and structure of the product, then in the formal mass production time, just according to the design of the sample mold directly set on the mass production mold, we can open it at one time to achieve the desired effect, effectively reduce the number of corrections of the mass production mold, and also ensure the quality requirements of silicone products. Sometimes when the size structure of the silicone products sent by the customer is not very accurate or completely determined, we usually use the sample mold to develop, which will be very convenient for the modification of the size structure of the silicone products in the later period. In the actual communication, we do not often encounter that some customers require mold opening but there is no drawing file, so we can only make proof (sample mold opening), use the sample to measure the product structure and size data, re-draw the data measured by the sample data, and then open the mold. However, the data obtained through data measurement may have errors in general. Only by using samples to open molds can we ensure that the number of changes in production molds is reduced. In addition, after the customer puts forward the requirement of product detailed drawing file to open the mold, the mold will often be modified in the process of opening the mold. At this time, the sample mold is a good way, just like we write the report, the formal report is not allowed to have any mistakes, first we have to make a draft on the draft paper, and then write the report formally. If there are any mistakes in the report, we will rewrite it. Now the sample mold is equivalent to the paper for the draft, and the formal report paper is equivalent to the silicone mold for mass production, and the silicone product sample mold can facilitate the modification of the mold product. Finally, the production price of the sample mold is much lower than that of the production mold. Therefore, if the mold is scrapped due to the modification of the mold, the sample mold is also a way to reduce the cost of mold opening for the company and customers because of its lower cost. If the production mold is directly opened, it is not worth the loss if the damage leads to scrap.   The difference between sample mold and large mold is: 1, the number of holes opened by the sample mold is less, the use of templates is less, and the processing time is short, so the cost is relatively small and the efficiency is high. 2, the opening of the sample mold can also bring some other benefits, such as even if the product structure is not confirmed for the first time, it is more convenient to modify the mold, after modification, you can immediately confirm the sample, so as to shorten the time. 3. Because of the low cost, the risk can be reduced by opening the sample mold first. If you directly open the large mold, the first time can not confirm the sample, with the modified mold production of products will bring a lot of quality problems, in this case, the mold will only be more and more bad, the more repair is not conducive to production. Therefore, the sample mold is generally opened first for product confirmation, and then the large mold is opened after there is no problem.   Mold customization process: 1, by the customer to provide 2D/3D drawing files or sample material (when providing the sample material, the custom manufacturer to copy the physical 3D drawing files); 2, mold room master according to 3D drawings to design mold processing drawings; 3, the silicone processing plant to take the sample mold proofing, the sample to the customer for confirmation; 4. After sample confirmation, open large mold for small batch production, mass production after product confirmation;

Silicone products proofing process, in the rapidly changing manufacturing field, silicone products with its excellent high and low temperature resistance, corrosion resistance, soft elasticity and environmental protection characteristics, widely used in medical, food, electronics, home and other industries. From the idea of a novel silicone product to the presentation of the final product, the proofing process is a crucial bridge. It is not only related to the verification of product design, but also the cornerstone of subsequent large-scale production.     The proofing of silicone products is the starting point for the perfect combination of designer inspiration and engineering technology. This process requires not only the exact reproduction of the original design intention, but also the characteristics of the material and the feasibility of the production process. From the preliminary design communication to the final sample confirmation, every step contains the unremitting pursuit of details and strict control of quality. Next, we will step by step uncover the mystery of silicone products proofing, understand the professional process and ingenuity behind it.   1. Design communication and confirmation At the beginning of proofing, the primary task is to conduct in-depth communication with customers or designers to clarify the design concept, functional requirements, appearance size and material requirements of the product. At this stage, both parties need to confirm the design details repeatedly to ensure that the design concept is accurately communicated to the production team. At the same time, the realizability of the design is evaluated according to the characteristics of the silica gel material, and the design is fine-tuned if necessary to meet the production process requirements.   2.3D modeling and drawing After confirming the design is correct, enter the 3D modeling and drawing stage. Professional CAD (Computer Aided Design) engineers use 3D modeling software to build accurate models of products according to design requirements. This process not only requires the appearance of the model to be consistent with the design, but also requires detailed labeling of key information such as internal structure, wall thickness, and assembly relationship. Subsequently, detailed production drawings are generated, including two-dimensional plans, section views and necessary dimensioning, to provide accurate guidance for subsequent mold production.   3. Mold design and manufacturing Mold is the key to the molding of silicone products. According to the production drawings, the mold designer will design the mold that meets the product shape and structure requirements. The choice of mold materials, structural design, processing accuracy, etc., have a direct impact on the molding quality and production efficiency of the product. In the process of mold manufacturing, it is necessary to go through multiple processes such as precision machining, polishing and assembly to ensure the accuracy and durability of the mold.   4. Raw material preparation and mixing The choice of silicone raw materials is equally important, and the appropriate silicone type (such as food grade, medical grade, etc.) and additives need to be selected according to the product use. After the raw material is ready, the mixing process is entered, and the silica gel is evenly mixed with the necessary additives through a professional mixer to form a rubber material that meets the requirements. In the mixing process, parameters such as temperature and time should be strictly controlled to ensure the stable performance of the compound.   5. Vulcanization molding Vulcanization molding is the core of silica gel product proofing. The mixed compound is injected into the mold, and the compound is vulcanized in the mold by heating and pressurizing. In the vulcanization process, it is necessary to strictly control the process parameters such as temperature, time and pressure to ensure the dimensional accuracy, appearance quality and physical properties of the product. After forming, it is necessary to carry out post-processing procedures such as stripping and dressing to remove excess raw edges and ensure that the product is clean and beautiful.   6. Quality testing and evaluation After the proofing is completed, the samples need to be strictly tested and evaluated for quality. The tests cover dimensions, structural integrity, physical properties (such as tensile strength, tear strength, hardness, etc.) and functional tests. If necessary, it is also necessary to conduct environmental adaptability tests, such as performance under high temperature, low temperature, humidity and other conditions. Through comprehensive testing, ensure that the samples meet the design requirements and customer expectations.   7. Feedback and adjustment According to the test results and customer feedback, the sample is adjusted and optimized. It may involve design fine-tuning, mold correction, process parameter adjustment and many other aspects. After adjustment, proofing and testing are carried out again until the sample fully meets the requirements.   Through a series of rigorous processes such as design communication, modeling and drawing, mold manufacturing, raw material preparation, vulcan molding, quality testing and feedback adjustment, we are able to convert designers' creativity into accessible, high-quality silicone products.

What are the characteristics of the extrusion process of silicone products? Silicone products are a very popular and favorite products, and have applications in many aspects. Silicone products are produced by professional manufacturers, in the production process, silicone products molding and extrusion and other common production methods, and the extrusion process of silicone products as an important part of the production process.   1. Introduction of extrusion process of silicone products Silicone extrusion process is a common production process, mainly through the extrusion of silicone raw materials into a certain shape and specifications of the product. The process mainly includes mixing, extrusion, cooling, cutting, inspection and other links. Silicone products produced by extrusion process have excellent properties, such as high temperature resistance, low temperature resistance, corrosion resistance, insulation, etc., so they are widely used in various fields. 2. Characteristics of extrusion process of silicone products Processing flexibility The extrusion process of silicone products has the characteristics of high processing flexibility. During the production process, products of different specifications and shapes can be produced by adjusting the parameters of the extruder and the design of the mold. In addition, the extrusion process can also be combined with other processes such as injection, calendering, etc., to meet diverse production needs. High output, low energy consumption The extrusion process of silica gel products is a production process with high yield and low energy consumption. Compared with traditional processing methods, extrusion process has higher production efficiency and lower energy consumption per unit product, which is conducive to reducing production costs and improving market competitiveness. Excellent product performance Silicone products produced by extrusion process have excellent properties. Because the silica gel itself has the characteristics of high temperature resistance, weather resistance, chemical corrosion resistance, etc., the silica gel products produced by the extrusion process also have the corresponding excellent properties, and can be applied to a variety of complex environments and uses. Environmental sustainability The extrusion process of silicone products is an environmentally friendly and sustainable production process. The silicone raw material itself is non-toxic and tasteless, and the waste generated in the production process can be recycled and reused, reducing the negative impact on the environment. In addition, silicone products have a long service life, which can reduce resource consumption and waste.   Silicone extrusion process is an important production process, with high processing flexibility, high output, low energy consumption, excellent product performance and environmental sustainability and other characteristics.