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

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.

How to prevent aging and deformation of silicone products? Silicone products are widely used in daily life, medical, industrial and other fields due to their softness, durability, environmental protection and other characteristics. However, silicone products may experience aging, deformation, and other issues due to environmental factors or improper use during long-term use.   Reasons for aging of silicone products: The aging of silicone products is mainly due to the influence of external environment and usage methods, including: Exposure to ultraviolet radiation and prolonged exposure to sunlight can damage the molecular structure of silicone, leading to its hardening and brittleness. In high temperature environments, silicone products are prone to oxidation reactions, leading to a decrease in their elasticity and even deformation. Chemical substances, such as strong acids, strong bases, or other corrosive chemicals, can react with silica gel and damage its properties. Mechanical stress, long-term stress or frequent stretching and squeezing can cause deformation or cracking of silicone products. In a humid environment, although silicone itself has water resistance, long-term storage in a humid environment may breed mold and affect its performance.   How to prevent aging and deformation of silicone products: 1. Avoid prolonged exposure to sunlight Ultraviolet radiation is one of the main factors causing aging of silicone products. When using or storing silicone products, direct sunlight should be avoided as much as possible, especially for outdoor use. It is recommended to choose products with stronger UV resistance. 2. Stay away from high temperature environments The high temperature resistance of silicone products is limited, usually able to withstand temperatures ranging from -40 ℃ to 200 ℃. Beyond this range, silicone may undergo deformation or aging. Therefore, avoid placing silicone products in high-temperature environments, such as near fire sources or heating equipment. 3. Avoid contact with chemical substances When using silicone products, avoid contact with strong acids, strong bases, organic solvents, and other chemical substances. When cleaning silicone products, it is recommended to use neutral detergent and water, and avoid using corrosive cleaning agents. 4. Proper use and storage Avoid excessive stretching or squeezing of silicone products to prevent permanent deformation. When storing, it should be placed in a dry and ventilated environment, avoiding heavy pressure or folding. 5. Regular cleaning and maintenance Regularly clean silicone products to prevent dirt and mold accumulation. After cleaning, dry with a clean soft cloth and place in a cool place to air dry. 6. Choose high-quality silicone products High quality silicone products usually have better anti-aging performance. When purchasing, one should choose products produced by reputable manufacturers and pay attention to checking the material and performance parameters of the products.

Improper maintenance of silicone products can accelerate their aging rate and shorten their service life. Silicone product manufacturers will discuss how to deal with this problem. There are many reasons for the aging phenomenon of silicone products, including the adjustment of raw materials, the addition of vulcanizing agents, and customer use. Improper operations during this process can affect the service life of silicone products. Therefore, the storage of silicone products also requires some skills. Storing newly vulcanized raw materials in a dry or humid place can accelerate the aging phenomenon of the rubber material, causing the dispersion of rubber molecules, resulting in uneven molding colors and dark lines. Prolonged storage can lead to a decrease in toughness, shrinkage strength, and elasticity. The finished product can be packaged and sealed to prevent dust from entering. It should be placed in a dry place with ventilation to prevent the product from experiencing a decrease in oxidation resistance. Due to weather conditions, it should not be placed outdoors in high temperature and transparent areas, as the product may become anaerobic. This is the result of our years of experience, and we hope it can be helpful to everyone.

There are indeed many rubber raw materials for making oil seals, such as nitrile rubber, fluororubber, hydrogenated nitrile rubber, silicone rubber, AEM, etc.   But the selection of which raw material to use for oil seals is based on the requirements of the oil seal's usage indicators. The use environment of oil seals is in the state of hot oil, requiring temperature and oil resistance.   1. Silicone rubber is not oil resistant and does not meet the requirements. It is being phased out;   2. If the temperature of the working area is low, generally within 120 degrees, NBR can be selected, and the relative price is also suitable;   3. If the temperature exceeds 120 degrees, ACM needs to be used, but its resistance to gasoline and oil is not good, there are many processing problems, and it will deform if compressed for a long time. Oil seals made of ordinary ACM materials are prone to oil leakage during high-speed operation. You can consider using AEM.   4. If the requirements are higher and the cost is more relaxed, fluororubber is the best choice. Nowadays, fluororubber raw rubber costs only a few tens of yuan. If the cost limitation problem is basically solved, fluororubber has a high cost-effectiveness.   5. If higher requirements are needed, such as seals in oil wells, hydrogenated nitrile rubber can only be used.

Society is constantly advancing, and since the emergence of electronic products, the speed of updates and replacements is also getting faster and faster. From the earliest plastic buttons, to drip glue buttons, to silicone buttons, and now to the common touch sensitive buttons. Even without buttons, will silicone buttons be completely eliminated?   Although most electronic products and some machinery have abandoned the use of silicone buttons and switched to touch buttons, silicone buttons will still not be completely abandoned. Because some mechanical working environments that use buttons cannot support the use of touch screen buttons. Although the touch based method is very advanced and convenient, its usage environment cannot be compared to silicone buttons. In harsh environments such as temperature, humidity, dust, etc., it is very easy to malfunction. Often prone to malfunction or lack of response. So in these situations, physical silicone buttons must be used to reduce the failure rate. The performance characteristics of silicone material include high temperature resistance, low temperature resistance, corrosion resistance, oil resistance, waterproofing, and long service life. It cannot be replaced by touch screen buttons. Therefore, silicone buttons are unlikely to be completely eliminated.

View relevant certifications and labels Certification Mark: Food grade silicone rubber products usually have relevant certification marks, such as FDA certification in the United States and LFGB certification in the European Union. These certifications are an important basis for products to comply with food contact safety standards. If the product claims to be food grade silicone rubber, the merchant can be required to provide relevant certification certificates or check whether there is a corresponding certification mark on the product packaging. Product identification: Legitimate food grade silicone rubber products will be clearly labeled with the words "food grade" on the product itself or packaging, and may also indicate information such as material composition, temperature range of use, and applicable scenarios.   Observe appearance and texture Color: High quality food grade silicone rubber usually has a uniform and natural color, with no obvious color difference. If it is a transparent silicone rubber product, it should have high transparency, no turbidity, bubbles or impurities; If there are colored products, the color should be bright and stable, and there should be no fading phenomenon. Odor: Food grade silicone rubber itself has a small odor and almost no obvious pungent smell. If silicone rubber products have a strong pungent, rubbery, or other odor, they are likely not food grade or have quality issues. Texture: Touched by hand, food grade silicone rubber has a soft, smooth texture, good elasticity, comfortable hand feel, and no rough, sticky or prickly feeling. After pressing firmly, silicone rubber can quickly return to its original state without leaving obvious indentations or deformations.   Conduct simple performance testing Heat resistance test: Food grade silicone rubber generally has good heat resistance. Silicone rubber products can be tested in a high-temperature environment, such as heating at a temperature of 120 ℃ -200 ℃ for a period of time (be careful not to exceed the maximum operating temperature indicated on the product label), to observe whether they will deform, melt, produce odors, or release harmful substances. If there is an abnormality, it is likely not food grade silicone rubber. Waterproof immersion test: Soak silicone rubber products in water and observe whether they will swell, discolor, emit odors, and other phenomena. After soaking in water, food grade silicone rubber should have relatively stable performance and not cause water pollution. Flexibility test: Food grade silicone rubber has good flexibility and elasticity, and can be bent, twisted, and other operations on products to observe whether it is easy to break or crack. High quality food grade silicone rubber can maintain good performance even after repeated bending and twisting.   Understand the source and brand of the product Purchasing channels: Choose legitimate purchasing channels such as large supermarkets, mother and baby specialty stores, official flagship stores, etc. The products sold through these channels usually undergo certain quality screening and auditing, which provides greater assurance. Brand reputation: Renowned brands and manufacturers with good reputations usually pay more attention to product quality and safety, and have stricter production processes and quality control. You can learn about it by examining product reviews, brand history, and reputation.

Many people have used silicone protective covers, but have you ever thought that it will affect heat dissipation?   You may have thought about this question before, but in today's life, silicone protective covers are commonly used items, especially for our phones. They not only have various patterns or texts, but also can elevate the level of our phones. But will silicone protective covers affect the heat dissipation of our phones?   This is a thought-provoking question, because as we all know, silicone is a very sealing material, so the silicone protective cover will naturally affect heat dissipation, making the phone hotter and more hot, which is a very bad experience.   Actually, everyone doesn't need to worry too much because the heat of the phone itself is not too high, and its operating activity is relatively small. If we look at this problem from the perspective of heat dissipation, it is affected. However, from its practical application, it can be seen that the silicone protective case does not have much impact. At least the heat of the phone is not enough to heat up to the point of heat dissipation. Unless you are playing games and charging while playing all day long, I think it's surprising that your phone is not hot. Even if you don't use a silicone protective case, it is still very hot because your phone consumes a lot of electricity and runs at high speed. In such a situation, I can draw a conclusion that your phone is probably not hot. We need to change it.   If we don't use silicone protective covers, it will undoubtedly be a kind of harm and a decrease in grade for mobile phones. Without protective covers, it is estimated that the appearance of mobile phones will be affected by friction and damage from different situations and factors. So, do you think it is because silicone protective covers have a greater impact on heat dissipation or because mobile phones are more damaged?

How to avoid oxidation of silicone products, silicone products are widely used in various fields because of their excellent heat resistance, chemical resistance and good physical properties. However, silica gel products may oxidize in specific environments, affecting their performance and service life.   1. Choose high-quality silicone materials   High quality silicone materials typically have strong antioxidant properties. When selecting silicone products, it is advisable to choose reputable manufacturers and suppliers to ensure the quality of the materials. High quality silicone gel will add antioxidants during production and processing to enhance its antioxidant capacity.   2. Avoid contact with oxygen   The oxidation of silicone products is mainly caused by contact with oxygen. Therefore, when storing and using silicone products, their contact with oxygen should be minimized as much as possible. For example, silicone products can be stored in sealed bags or containers to reduce the invasion of oxygen.   3. Avoid exposure to ultraviolet radiation   Ultraviolet radiation can accelerate the oxidation process of silicone products. Therefore, during storage and use, silicone products should be avoided from being exposed to sunlight or strong ultraviolet radiation. If outdoor use is required, sunshades or other protective measures can be considered.   4. Control environmental temperature and humidity   High temperature and humid environments can accelerate the oxidation rate of silicone products. Therefore, silicone products should be stored in a dry and ventilated environment to avoid the effects of high temperature and humidity. Meanwhile, avoid exposing silicone products to air-conditioned rooms or high-temperature environments for extended periods of time.   5. Regular inspection and maintenance   Regularly inspect the use of silicone products and promptly detect signs of oxidation. If oxidation phenomena such as discoloration, cracking, or hardening are found on the surface of the product, it should be stopped from use in a timely manner and appropriate maintenance measures should be taken. For slightly oxidized silicone products, their service life can be extended by cleaning and applying a layer of protective agent.   6. Use antioxidants   For some silicone products with high requirements, it is possible to consider coating the surface with a layer of antioxidant. Antioxidants can form a protective film to prevent oxygen and ultraviolet radiation from corroding silicone products.   Avoiding oxidation of silicone products requires consideration from multiple aspects, including selecting high-quality silicone materials, reducing contact with oxygen and ultraviolet radiation, controlling environmental temperature and humidity, regular inspection and maintenance, and using antioxidants. By taking these measures, the service life of silicone products can be effectively extended and their good performance can be maintained.

The following is to introduce the six major processes of silicone products:   1.Molding Die molding, this production process is the most common. Mainly completed by the mold, mold shape determines the shape of the silicone product. Molded silica gel products are usually through the high temperature mold in the addition of vulcanizing agent solid silica gel raw materials through the vulcanization machine pressure, high temperature sulfur into solid molding, molded silica gel hardness is usually 30°C-70°C This production process is relatively simple, suitable for all silicone products.   2.Injection (injection) This process is relatively high quality requirements, is the combination of liquid silicone and plastic. The product has good thermal stability, cold resistance, excellent electrical insulation performance, and does not produce toxic substances when burning. Therefore, it has become an irreplaceable material in the production design of health products, automobiles, baby products, medical supplies, diving supplies, kitchen utensils and seals.   3.Extrusion Extrusion molding, extrusion silicone products are usually extruded by extrusion machine silicone molding, generally extrusion silicone shape is long, tubular can be cut at will, extrusion art to make the product shape is relatively single, mostly strip. Silicone tubes are widely used in medical and mechanical equipment fields. It can also be used as a buffer in packaging materials.   4. Rolling Silicone rubber is kneaded and mixed with silica black, silicone oil, etc., and then rolled out sheet. The physical and mechanical properties of the film made by calendering are obviously different from those of the horizontal and vertical films, which is called calendering effect. The specific performance is that the longitudinal tensile strength of the film is greater than that of the horizontal, the transverse elongation of the film is greater than that of the vertical, and the longitudinal shrinkage of the film is greater than that of the horizontal. The calendering effect is the result of the orientation of macromolecule and acicle and sheet compound in the calendering process. The size of the calendering effect is related to the composition of the compound, calendering temperature, speed and speed ratio. For larger products, such as silicone sheets, silicone sheets.   5. Infusion Perfusion mold or perfusion mold operation method: perfusion mold or perfusion mold, is used for relatively smooth or simple products, there is no mold line to save labor and time, that is, the product or model you want to copy, surrounded by rubber plate or glass plate, the vacuum of silicone directly into the product above, after the silicone dry molding, take out the product, the mold is formed (Note: The injection mold is generally made of silica gel with relatively soft hardness, so that the demoulding is easier and will not damage the products inside the silicone mold. It is a combination of solid and liquid, using products such as mobile phone covers, luggage covers and so on.   6. Coating Rapid vulcanization; Strong adhesion; Good fluidity, easy to defoam. The use of platinum complex catalysis, non-toxic, no odor; Excellent thermal stability and cold resistance (use temperature -60℃ ~ 200℃) after forming with good permeability, heat resistance, and a certain tensile strength; Excellent anti-skid performance; No pollution; Low hardness; The planting adhesive is firmly bonded. High tear strength; High transparency; Good tensile properties. Wear resistance, wash resistance, high temperature resistance; High three-dimensional level, fabric smooth, soft, flexible excellent texture, good elasticity. Washable and dry cleaning resistant. When applied to the cloth, it has the effect of anti-aging. Such as silicone gloves, rain shoes and so on.