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

What is the key to the production and processing of silicone products? Silicone products are widely used in various fields such as medical, electronics, automotive, food, etc. due to their excellent high temperature resistance, corrosion resistance, non-toxic and odorless characteristics. With the continuous growth of market demand, the production and processing technology of silicone products is also constantly improving. However, how to ensure product quality, improve production efficiency, and reduce production costs has become the core issue faced by silicone product manufacturers. Today, we will take you to understand the key to the production and processing of silicone products.   1. Production process of silicone products The production of silicone products mainly includes processes such as raw material preparation, mixing, molding, vulcanization, and post-treatment. Firstly, raw material preparation is the foundation. The main component of silicone is silicone rubber, which usually requires the addition of auxiliary materials such as fillers, vulcanizing agents, plasticizers, etc. to improve performance. The mixing process uses an internal mixer or an open mixer to evenly mix the raw materials, ensuring consistent material properties. Molding is the core step, and common methods include compression molding, injection molding, and extrusion molding. Compression molding is suitable for complex shapes, while injection molding is suitable for mass production. Sulfurization is the process of crosslinking and solidifying silicone gel through heating, endowing it with its final properties. Post processing includes trimming, cleaning, testing, etc., to ensure that the appearance and functionality of the product meet the requirements.   2. Technical difficulties in production and processing Material ratio and uniformity: The performance of silicone products is highly dependent on the raw material ratio and mixing uniformity. Excessive addition of fillers may lead to an increase in product hardness, while insufficient sulfurizing agents can affect the curing effect. Molding accuracy control: Complex shaped silicone products require extremely high requirements for mold design and molding processes, and a slight carelessness may lead to product size deviations or surface defects. Optimization of vulcanization process: The vulcanization temperature and time directly affect product performance, and too high or too low can lead to a decrease in product performance. Environmental protection and cost balance: The waste gas and wastewater generated during the silicone production process need to be properly treated, and the enterprise also needs to control production costs to maintain competitiveness.   3. Key measures for quality control Raw material testing: Strictly control the quality of silicone raw materials to ensure that they meet relevant standards, such as food grade or medical grade silicone, which must be certified by FDA. Process monitoring: Real time monitoring of mixing uniformity, forming pressure, vulcanization temperature and other parameters during the production process to ensure stability and controllability of each link. Finished product testing: Through tests such as tensile strength, tear strength, and temperature resistance, ensure that the product meets performance standards. Traceability system: Establish a comprehensive quality traceability system to facilitate the identification of problems and timely improvement.   4. Future Development Trends Intelligent production: With the advancement of Industry 4.0, the production of silicone products will gradually achieve automation and intelligence, improving production efficiency and product consistency. Green and environmentally friendly: The research and application of environmentally friendly silicone materials will become mainstream, reducing environmental pollution during the production process. High performance materials: The application of cutting-edge technologies such as nanotechnology and biotechnology will promote the development of silicone products towards higher performance and wider application fields. Customized services: With the diversification of market demand, silicone product manufacturers will pay more attention to providing customized solutions for customers.   The production and processing of silicone products is a complex and delicate process, involving multiple links and technical difficulties. By optimizing production processes, strengthening quality control, and embracing technological innovation, enterprises can gain an advantage in fierce market competition. In the future, with the advancement of intelligent and green trends, the silicone products industry will usher in a broader development space.

As is well known, in addition to superior product performance, silicone products also have a very unique advantage, which is the color change. Now let's take a look at the following methods for coloring silicone products:   1.Solution method This method involves dissolving silicone rubber into a solution with a certain concentration, then adding coloring agents and silicone rubber compounding agents to the solution, stirring evenly, drying at a certain temperature to remove the solvent, and adding sulfur to the rubber mixing machine. Disadvantages: Complex operation, uneven dispersion, slight color difference, difficult solvent recovery, environmental pollution, and low usage. 2.Mixing method At present, this method is commonly used in coloring silicone products, which involves directly adding the coloring agent or mixing it with the carrier before adding it to the rubber compound, and then mixing it evenly through a rubber mixing machine to color the silicone rubber. The specific methods are as follows. 3.Dry powder method Directly add the powdered colorant and small material into the silicone gel and mix on the open mill. The advantages are simple operation and low cost, but there is a large amount of dust during mixing, which pollutes the environment and is not easily dispersed evenly. There is color difference, and if the particles are too hard or coarse, it can also cause quality problems such as color spots, stripes, or chromatographic mutual pollution, which is less commonly used. 4.Color paste method It is first mixed with a liquid colorant, then ground into a paste or slurry using a three roll machine, and then added to silicone rubber in a certain proportion for mixing. This method can prevent dust from flying everywhere, which is beneficial for the dispersion of colorants in rubber and uniform color. But the content of colorants in the color paste is relatively low, the coloring is not very high, the transportation volume is large, the loss is large, and it is not very convenient for users to use. 5.Granular method There are two main methods for preparing coloring agent particles. The method is the same as other powder formulations. Firstly, soak the powder coloring agent in a surfactant, and then extrude it into pellets by melting wax or melting with resin. The second method is to soak the colorant in the surfactant, then refine the colorant particles by mechanical force to make a dispersion of a certain concentration, then mix with lotion for deposition, dry and roll to make particles. Particle coloring agents are easy to use, have good dispersibility, no dust flying, do not pollute the environment, have bright colors, uniform hair color, and no color difference. They are a very promising coloring method. However, the preparation process of granular coloring agents should be extensive.

Conductivity requirements Conductive particle color: Many silicone rubber products require conductivity, such as conductive silicone rubber buttons. To achieve this function, conductive particles such as carbon black and conductive carbon particles are usually added to silicone rubber. These conductive particles themselves are black and evenly dispersed in the silicone rubber, making the entire product appear black. Stability of conductivity: Black conductive particles not only endow silicone rubber products with conductivity, but also ensure the stability of this conductivity. Stable conductivity is crucial for the reliable operation of products in applications such as electronic devices.   Material characteristics and processing requirements Raw material characteristics: Silicone rubber itself is a colorless or semi transparent material, but in industrial production, various additives are often added to improve its performance or meet specific needs. Among them, some additives such as white carbon black may affect the color of the product, making it tend towards black. Processing process: During the processing of silicone rubber products, such as high-temperature vulcanization, some chemical changes may occur in the material, which in turn can affect the color of the product. In addition, the cleanliness of production equipment and the condition of molds may also have a certain impact on the surface color of the product.   Cost and market demand factors Cost considerations: In some cases, the production cost of black silicone rubber products is relatively low. On the one hand, black pigments or additives are usually cheaper and easier to obtain; On the other hand, black can conceal some minor defects in the production process, reducing the excessive requirements for raw material purity and processing accuracy, thereby reducing production costs. Market demand: In some application scenarios, black silicone rubber products are more popular or practical. For example, in the fields of industrial equipment, electronic devices, etc., a black appearance is more in line with the overall design style and aesthetic needs of the equipment, and can also better adapt to harsh working environments.

The difference between silicone products and TPE products, in daily life and industrial production, silicone products and TPE products are widely used because of their unique properties. However, many people are not clear about the difference between the two materials. Small series will analyze the difference between silicone products and TPE products from the aspects of material characteristics, application fields, advantages and disadvantages, etc., to help you better understand the two materials.   1. Material composition and type Silicone (silicone rubber) Ingredients: Organic silicon polymer (polysiloxane) with inorganic silicon oxygen bonds (Si-O) as the main chain. Type: Belonging to thermosetting materials, it needs to be cured through vulcanization (cross-linking) and cannot be processed repeatedly. TPE (thermoplastic elastomer) Ingredients: A blend of various thermoplastic elastomers such as SBS, SEBS, TPU, TPV, etc. Type: Belongs to thermoplastic materials, can be repeatedly processed after heating and melting, and can be recycled and reused.   2. Processing technology silicone rubber Process: It requires mixing, vulcanization molding (molding, extrusion, injection), high mold cost, and long cycle. Waste disposal: Non recyclable, scrap materials are directly discarded. TPE Process: It can be directly injection molded or extruded without vulcanization, with high processing efficiency and suitable for complex structures. Waste disposal: can be crushed and reused to reduce costs.   3. Cost and Economy Silicone: High raw material prices (high cost of silicone monomers), high processing energy consumption, suitable for small batch high value-added products. TPE： Low material cost, short processing cycle, suitable for large-scale production (such as daily necessities, toys).   4. Environmental friendliness Silicone: non-toxic and odorless, can pass food grade certifications such as FDA and LFGB, and produces harmless silicon dioxide when burned. TPE： Environmentally friendly TPE can meet ROHS/REACH standards, but some contain plasticizers or fillers that need to be carefully selected.   Summarize Silicone is known for its high performance and durability, while TPE wins with its ease of processing and cost advantages. Choosing suitable materials based on specific needs such as temperature, elasticity, environmental friendliness, and budget is crucial.

Extrusion molding is used to produce various silicone products. In the production process of silicone products, extrusion molding has become one of the important methods for manufacturing various silicone products due to its high efficiency, flexibility, and customizability. From simple rectangular silicone tubes to complex braided tubes, two-color tubes, etc., extrusion molding technology not only enriches the types of silicone products, but also greatly meets the needs of different industries and application scenarios.   Squeezing, as the name suggests, is the process of extruding mixed silicone rubber raw materials into products with regular shapes through molds at a certain temperature and pressure using an extruder. The core of this process lies in the design of the mold, and different molds can produce silicone products with different shapes. For example, common silicone tubes, sealing strips, foam strips, etc. are all manufactured using extrusion molding technology. These products are widely used in various fields such as healthcare, food, electronics, and construction due to their excellent elasticity, weather resistance, and chemical stability.   In the medical field, silicone tubing is often used as a catheter, drainage tube, etc. in medical devices due to its non-toxic, odorless, and biocompatible characteristics. Extrusion molding technology can produce silicone tubes with precise inner and outer diameters and uniform tube walls, meeting the strict requirements for product quality and accuracy in the medical field. Meanwhile, the flexibility and corrosion resistance of silicone tubing also make it an ideal choice for medical processes such as hemodialysis and infusion.   The food industry also relies on silicone products produced by extrusion molding technology. Silicone sealing strips, silicone gaskets and other products are often used in food packaging, food machinery and other occasions due to their excellent temperature resistance and food grade safety standards. These silicone products not only effectively prevent food leakage and contamination, but also maintain stable performance in harsh environments such as high temperature and high pressure.   Extrusion molding technology also plays an important role in the fields of electronics and electrical engineering. For example, products such as silicone braided tubes and two-color tubes are often used for insulation protection of wires and cables due to their good insulation, high temperature resistance, and flexibility. These silicone products not only improve the safety performance of wires and cables, but also enable them to maintain good conductivity and service life in complex environments such as bending and twisting.   In addition, extrusion molding technology can also produce foam silicone products such as foam strips, foam tubes, etc. These foam silicone products are often used in fields such as automotive interiors and building soundproofing due to their lightweight, soft, and sound-absorbing properties. By adjusting the type and amount of foaming agent, foam silicone products with different densities and hardness can be produced to meet the needs of different application scenarios.   It is worth mentioning that extrusion molding technology is not only suitable for the production of simple rectangular silicone products, but can also produce silicone products with more complex shapes and diverse functions through innovative mold design. For example, using co extrusion technology, multiple colors of silicone materials can be extruded simultaneously to form two-color or multi-color silicone products. These products not only have a beautiful appearance, but can also be customized according to individual needs to meet the diverse needs of consumers.   In addition to the application fields mentioned above, extrusion molding technology also plays an important role in many other fields. For example, in toy manufacturing, silicone extruded products have become an ideal choice for children's toys due to their soft, safe, and non-toxic characteristics; In the manufacturing of sports equipment, silicone extruded products are widely used in fitness equipment, sports protective gear, and other products due to their wear resistance, slip resistance, and good elasticity.

The formation of silicone products depends on various factors. Silicone products are widely used in industries such as medical, food, electronics, and automotive due to their excellent high temperature resistance, corrosion resistance, flexibility, and environmental protection characteristics. However, the molding process of silicone products is complex, and their quality is affected by multiple factors. So, what factors determine the formation of silicone products? How to optimize the molding process to improve product quality?   1. Material formula Basic polymer: The type of silicone rubber (such as high-temperature vulcanized silicone rubber HTV, liquid silicone rubber LSR, etc.) determines the choice of molding process. Fillers and additives: Fillers such as white carbon black and calcium carbonate can enhance mechanical properties; Crosslinking agents (such as peroxides), vulcanization accelerators, inhibitors, etc. affect the vulcanization rate and product performance. Liquidity: The viscosity and fluidity of the material directly affect the ability to fill the mold, and need to be adjusted according to the molding process (such as injection, extrusion). 2. Molding process Compression molding: suitable for complex shapes, requiring control of pressure and temperature. Injection molding: suitable for large-scale production, requiring high material fluidity and precise mold design. Extrusion molding: used for continuous profiles such as pipes and sealing strips, requiring stable material extrusion and cooling control. Liquid silicone rubber (LSR) molding: requires high temperature rapid vulcanization, relying on precise molds and temperature control systems. 3. Temperature control Sulfurization temperature: Different vulcanization systems (such as platinum catalysis and peroxides) require specific temperature ranges. Insufficient temperature leads to incomplete vulcanization, while excessive temperature may decompose the material. Mold temperature: Uniform mold temperature distribution ensures consistent product curing and avoids warping or defects. 4. Pressure and holding pressure Filling pressure: sufficient pressure to fill the mold cavity with material, reducing bubbles and material shortage. Pressure holding time: Maintain pressure until vulcanization is complete to prevent product shrinkage and deformation. 5. Mold design Structural rationality: The parting surface, gate position, and exhaust hole design affect material flow and molding quality. Surface treatment: Coating or polishing treatment can reduce silicone adhesion and facilitate demolding. Dimensional accuracy: Mold wear or tolerances can directly affect product dimensional stability. 6. Sulfurization time Positive sulfurization time: It is necessary to balance the degree of sulfurization and production efficiency, and avoid under sulfurization (low strength) or over sulfurization (high brittleness). 7. Environmental factors Humidity and impurities: Condensed silicone requires moisture curing, while additive molding requires a dry environment; Dust or oil stains may cause surface defects. Production environment temperature: affects material flowability and vulcanization rate. 8. Post processing Edge trimming and cleaning: Remove burrs and residual release agents to enhance the appearance. Secondary vulcanization: further removing low molecular weight substances, improving high temperature resistance and stability.

Natural rubber: Under general wear conditions, natural rubber has good wear resistance. Especially in low-temperature environments below 15 degrees, its wear resistance is superior to that of styrene butadiene rubber. Styrene butadiene rubber: Under high temperature conditions, styrene butadiene rubber exhibits excellent wear resistance. At the same time, when the temperature is above 15 degrees, its wear resistance is also better than natural rubber. In addition, the benzene ring in styrene butadiene rubber contains conjugated double bond groups, which can absorb and distribute external energy, protect the macromolecular chain from damage, and thus improve wear resistance. Butadiene rubber: Under harsh conditions such as high speeds, polybutadiene rubber has the best wear resistance. The wear resistance of its vulcanized rubber increases with the increase of the content of cis chain links (1,4 structure). Polyurethane rubber: containing conjugated benzene rings, its wear resistance ranks among the top in various rubbers, more than 4 times higher than natural rubber and styrene butadiene rubber. However, it should be noted that its wear resistance will sharply decrease at high temperatures. Other rubbers, such as chloroprene rubber and nitrile rubber, also have good wear resistance and can be selected according to specific application scenarios.

What are the application areas of thermal conductive silicone products? As a high-performance thermal management material, thermal conductive silicone products are widely used in various industries due to their excellent thermal conductivity, insulation, and weather resistance. With the rapid development of electronic devices, new energy vehicles, LED lighting and other fields, the demand for thermal conductive silicone products continues to grow.   1. What is thermal conductive silicone product Thermal conductive silicone products are a functional material made from silicone as the substrate and added with thermal conductive fillers (such as alumina, boron nitride, etc.). It has the following characteristics: High thermal conductivity: effectively transfers heat and reduces equipment temperature. Insulation: It has good electrical insulation performance to ensure equipment safety. Flexibility: Can adapt to surfaces of different shapes and fill gaps. Weather resistance: high temperature resistance, aging resistance, suitable for various complex environments.   2. Main application areas of thermal conductive silicone products electronic enterprises Application scenarios: CPU、GPU、 Heat dissipation of electronic components such as power modules and LED drivers. Function: Thermal conductive silicone gaskets, thermal conductive silicone grease and other products are used to fill the gaps between electronic components and heat sinks, improve heat dissipation efficiency, and prevent equipment from overheating. Typical cases: Consumer electronics products such as smartphones, laptops, tablets, etc. LED lighting industry Application scenarios: LED beads, LED modules, LED displays, etc. Function: Thermal conductive silicone gasket or thermal conductive adhesive is used for the heat dissipation substrate of LED lamps, effectively reducing the temperature of the lamps and extending their service life. Typical cases: outdoor LED display screens, indoor lighting fixtures, automotive LED lights, etc. New energy vehicle industry Application scenarios: power batteries, motor controllers, car chargers, etc. Function: Thermal conductive silicone products are used for heat conduction between battery modules and cooling systems, ensuring uniform temperature of the battery pack and improving safety and performance. Typical cases: electric vehicles, hybrid vehicles, electric bicycles, etc. Communication equipment industry Application scenarios: 5G base stations, fiber optic equipment, routers, etc. Function: Thermal conductive silicone gasket is used for heat dissipation of high-power components in communication equipment, ensuring stable operation of the equipment in high temperature environments. Typical cases: 5G base station antennas, fiber optic transceivers, network switches, etc. Household appliance industry Application scenarios: Control modules for household appliances such as refrigerators, air conditioners, and washing machines. Function: Thermal conductive silicone products are used for heat dissipation of home appliance circuit boards to prevent damage to components due to overheating. Typical cases: smart refrigerators, variable frequency air conditioners, drum washing machines, etc. Medical equipment industry Application scenarios: medical imaging equipment, laser therapy devices, monitors, etc. Function: Thermal conductive silicone products are used for heat dissipation and insulation of medical equipment, ensuring equipment safety and reliability. Typical cases: CT machines, ultrasound equipment, electrocardiographs, etc. Industrial equipment industry Application scenarios: frequency converters, servo drives, industrial power supplies, etc. Function: Thermal conductive silicone gasket is used for heat dissipation of industrial equipment, improving equipment operation efficiency and stability. Typical cases: Automated production lines, robots, CNC machine tools, etc.   3. Advantages of Thermal Conductive Silicone Products Efficient heat dissipation: With high thermal conductivity, it can quickly transfer heat and reduce equipment temperature. Insulation safety: It has good electrical insulation performance to ensure the safe operation of equipment. Strong adaptability: can fill irregular surfaces and adapt to various complex structures. Environmentally friendly and durable: high temperature resistance, aging resistance, long service life, in line with environmental requirements.   4. How to choose suitable thermal conductive silicone products When choosing thermal conductive silicone products, the selection should be based on specific application scenarios and requirements: Thermal conductivity: Choose the appropriate thermal conductivity based on the device's heat dissipation requirements. Thickness and Hardness: Choose the appropriate thickness and hardness based on installation clearance and pressure requirements. Temperature resistance: Choose products that are resistant to high or low temperatures based on the working environment temperature. Environmental certification: Choose products that have passed environmental certifications such as RoHS and REACH to ensure safety and environmental protection.

Silicone seals are widely used sealing products, applied in various fields such as electronic appliances, mechanical equipment, automotive industry, etc., with excellent performance such as waterproof, dustproof, and sound insulation. However, sometimes the seal may become brittle, which can affect its sealing performance. So, what are the main reasons for silicone seals becoming brittle?   The material and formula of silicone seals determine their elasticity and stability during use in different environments. If the raw materials of silicone accessories do not meet the standards or there are deviations in the formula during the production process, it is easy to affect the long-term stability of silicone products. In addition, if the ambient temperature is too high or too low during the storage and use of seals, it can also easily lead to unstable performance of silicone materials, resulting in insufficient lifespan. Silicone products may also become brittle during use due to excessive pressure or improper usage methods. For example, if the silicone material is excessively stretched or compressed during the assembly process, it is easy to cause deformation or breakage. In addition, if the seal frequently comes into contact with corrosive substances or high-temperature environments during use, it may also deteriorate, thereby affecting its performance and lifespan.   The design and manufacturing process also affect the risk of brittleness. If the design of the seal is unreasonable, such as complex structure or high curvature, it is easy to cause stress concentration during use, leading to brittleness. In addition, improper production operations by silicone product manufacturers, such as improper temperature and time control, can also affect the performance and stability of seals. In summary, the reasons for the brittleness of silicone seals are complex, involving both materials and formulations, as well as the usage environment and methods, and are closely related to design and manufacturing processes. Therefore, in the selection and use of seals, it is necessary to strictly follow the specifications, pay attention to the ambient temperature and usage methods, and choose suitable products and manufacturers to ensure the quality and stability of the seals. At the same time, manufacturers of seals should also strengthen quality control and technological research and development, improve product reliability and stability, and provide users with better products and services.

Flame retardant rubber products are fire-resistant and safe materials made by adding flame retardants to rubber materials or using special processes, widely used in fields that require fire resistance performance. The following are its main uses: 1. Transportation Automobile: Used for manufacturing engine peripheral seals, wire and cable sheaths, interior parts (such as seats, carpets), etc., to prevent the spread of fire. Rail transit: The sound insulation materials, floors, curtains, etc. inside the carriage must comply with strict fire safety standards (such as EU EN 45545). Ship: cabin partitions, pipeline seals, etc., to reduce the risk of fire. 2. Electronic and Electrical Wire and cable: insulation layer and sheath to prevent short circuits from causing fires. Electrical casing: The casing material of electronic devices such as televisions and computers, which reduces the possibility of combustion. Connector: High temperature resistant and flame-retardant rubber components to ensure circuit safety. 3. Construction industry Fireproof doors/windows: sealing strips to prevent the spread of fire and smoke. Thermal insulation material: used for insulation of building exterior walls or pipelines to prevent fires caused by high temperatures. Firefighting equipment: fire hoses, smoke masks, etc., must have flame retardant properties. 4. Industry and Energy Chemical pipeline: When transporting flammable liquids or gases, use flame-retardant rubber to prevent leakage and explosion. Mining equipment: conveyor belts, seals, etc., suitable for underground flammable environments. Power station: Cable trays and seals to reduce the risk of electrical equipment fires. 5. Aerospace Aircraft interior: Seat and luggage compartment materials must meet aviation grade fire safety standards (such as FAR 25.853). Engine components: high temperature resistant and flame-retardant sealing rings and gaskets. 6. Daily consumer goods Children's products: toys, stroller components, in compliance with safety regulations. Sports equipment: Non slip mats, protective covers, etc. for fitness equipment. 7. Special Environment Petrochemical industry: sealing materials for pipelines and storage tanks in refineries and oil depots. In the military industry: flame retardant coatings or components for weapons and equipment. Key advantages Safety performance: Slows down the combustion rate and reduces the release of toxic smoke. Compliance: Meet international standards (such as UL 94, ISO 6940) or industry standards. Durability: Some flame-retardant rubbers have characteristics such as high temperature resistance and corrosion resistance. With the global emphasis on fire safety, the demand for flame-retardant rubber products continues to grow, especially in emerging fields such as new energy and intelligent electronics.