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

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.

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.