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

Carbon black is an amorphous carbon. It is a light, loose and extremely fine black powder with a very large surface area ranging from 10~3000m2/g. It is a carbonaceous material (coal, natural gas, heavy oil, fuel oil, etc.) that undergoes incomplete combustion under insufficient air conditions. Or the product of thermal decomposition. It can be used as a black dye, used to make Chinese ink, ink, paint, etc., and also used as a reinforcing agent for rubber.     1. Conductive carbon black Conductive carbon black has two physical forms, powder and granular. The product has the characteristics of low resistance, high conductivity, easy dispersion, small addition amount, and stable quality. It is suitable for conductive applications in various different industries, such as antistatic and lithium battery products.     2. Pigment Carbon Black Pigment carbon black has two hues, red phase and blue phase, and two physical forms of powder and granules. It has the characteristics of high blackness, high coloring, high dispersion, and stable quality. It is widely used in color masterbatches, paint inks, rubber, Plastic, wire and cable, leather, color paste, powder coating, paper, construction and other industries.   3. Acetylene carbon black Acetylene carbon black has the characteristics of high purity, high structure, low resistance, low ash content, low volatile content, and stable quality. It is mainly used for batteries as electro-absorbent fluid, and also used for conductive, antistatic and thermal conductive rubber products, as well as conductive coatings, plastics In production.   4. Insulating carbon black Insulating carbon black has the characteristics of ultra-high resistance value, high blackness, high coloring, easy dispersion, stable quality, etc., and can be used for high-quality printing and copying inks, high-insulating plastics, synthetic fibers, insulating rubber and other insulating products.   5. Spray carbon black Spray carbon black is a large particle size, high structure furnace carbon black with a particle size of 100~130nm. It is mainly used as a reinforcing filler for rubber. This product can be filled in a large amount of rubber with good processing performance. Extrusion search is small. Vulcanized rubber has high elasticity, low heat generation, small deformation, good low temperature performance, high tensile stress, but low tensile strength and elongation rate.   6. Metallurgical carbon black Metallurgical carbon black is an important raw material for the metallurgical industry. It is developed on the basis of improving the production process of natural gas semi-reinforcement and furnace black. It is mainly used as a carbon matching material in the cemented carbide smelting process, and can also be used as a graphite tube Furnace materials for resistance furnace.   Others include lamp smoke carbon black, mixed gas carbon black, water-soluble carbon black, rubber carbon black, building material carbon black, channel carbon black and other varieties.        

Fluorosilicone rubber is a silicone elastomer with side chain modification. Common products made of fluorosilicone rubber not only have the characteristics of general silicone rubber, but also have excellent oil resistance, including fuel, engine oil, chemical reagents and solvents. Therefore, fluorosilicone rubber makes up for the lack of oil resistance of ordinary silicone rubber, and can be called the "oil fighter" in silicone elastomers.   Compared with methyl vinyl silicone rubber, fluorosilicone rubber has excellent oil resistance, solvent resistance, and chemical resistance. Even compared with fluoro rubber, it has good oil and solvent resistance. After being immersed in the same medium, temperature and time, it shows excellent durability. It can be said that fluorosilicone rubber is the only elastomer that is resistant to non-polar media at -68°C to 232°C.     Fluorosilicone rubber has better resistance to methanol-containing gasoline. Even in a gasoline/methanol (85vol% / 15vol%) mixed system, the hardness, tensile strength and volume change of the vulcanized rubber are very small. After a long time of 500h After the immersion test, the physical properties hardly changed.   Heat resistance The high-temperature decomposition of fluorosilicone rubber is the same as that of silicone rubber, that is, side chain oxidation, main chain fracture, side chain thermal decomposition and cause a variety of complex reactions.Because the decomposition products also cause the main chain to break, the heat resistance is usually a little worse than that of silicone rubber, which has begun to oxidize and age at 200℃.However, by adding a small amount of heat stabilizer such as iron, titanium and rare earth oxide, it can be significantly improved and has sufficient heat resistance even at 250℃. The influence of temperature on fluosilicate rubber is greater than that of silicone rubber, but less than that of fluorosilicate rubber.The service life of fluorosilicone rubber at 150℃×2000h, 175℃×5000h and 200℃×4000h were also studied abroad, and the result was second only to methylvinyl silicone rubber.   Cold tolerance Fluorosilicone rubber and ordinary silicone rubber, low temperature performance is good.Because fluorosilicone is a linear high polymer with soft Si-O main chain, its low temperature property is better than that of Fluorosilicone with C-C main chain.Among them, the low temperature characteristic of fluorosilicone rubber (LS-2370U) is better, and the brittle temperature is as low as -89℃, while the general fluorosilicone rubber is about -30℃.   Electrical and radiation resistance The electrical properties of fluorosilicone rubber are similar to those of ordinary silicone rubber, but the special value is that the changes in high temperature, low temperature, humidity, oil, solvent, chemicals, ozone and other harsh conditions are very small. The radiation resistance of fluorosilicone rubber is not outstanding, but the radiation resistance of fluorosilicone rubber is better than that of methyl vinyl silicone rubber.   Physico-mechanical properties Like common silicone rubber, the mechanical strength of vulcanized rubber (especially tear strength) is relatively low.Therefore, to improve and improve the strength of fluorosilicone rubber is also an important research topic.   Weather resistance Fluorosilicone rubber is very resistant to weathering and retains good performance even after 5 years of exposure.Ozone is one of the gases generated most when the elastomer is aging, but no cracking or cracking has been found after the dynamic or static tests of fluorosilicone rubber.   The application of fluorine silicone Because of its excellent performance, fluorine silica gel has been used in many fields. 1. Automobile industry: all kinds of vehicles, turbocharged pipe, extrusion strip, sealing ring, oil seal, diaphragm, conduit, valve lining, etc. 2. Petrochemical industry: all kinds of high temperature, low temperature, chemical resistance to the erosion of pumps, valves, oil tanks and other equipment sealing products. 3. Aviation industry: seals and contacts that are resistant to fuel oil and lubricating oil on aircraft, such as various O-rings, fillers, sealing rings, sensor materials, diaphragms and gaskets. 4. Medical care: used for medical devices and artificial organs, such as medicinal catheter, drainage tube, artificial valve, etc. 5. Military industry: low temperature/oil/acid resistant harsh environments, e.g., fluid bellows for hydraulic systems of military aircraft, doors and Windows/rear cover seals for special vehicles, sensing materials for sensors.  

Many people have learned about silica gel material, which is a kind of environmentally friendly, non-toxic and tasteless, healthy and safe material. It is widely used in electronic communication, food appliances, medical devices, smart home and other fields.So how does conductive rubber form?     Conductive silicone rubber is based on silicone rubber, adding conductive filler, crosslinking agent and other combination of vulcanization, the common rubber is methylvinyl silicone rubber, the common conductive filler is acetylene carbon black, carbon fiber, superconducting electric carbon black, graphite, copper powder, silver powder, aluminum powder and zinc powder, etc.     Conductive silicone rubber application in the real life is more common, such as TV remote control, air conditioning remote controls, game controllers, and so on, a button on the controller is implemented by conductive silicone, when we press the button, conductive silicone bonding pad on the PCB in contact and connection conduction, realize the corresponding function keys.   Conductive silica gel is installed directly above the bonding pad, which is exposed and not connected to each other. When the silicone button is pressed, the bonding pad is connected through conductive silica gel. The following figure is one of the common bonding pad structures.   Conductive silicone rubber has the advantage of small volume resistivity, low hardness, resistance to high and low temperature (70-200 ℃), ageing resistance, processing and manufacturing process performance is good, especially suitable for manufacturing complex shape, conductive requirement, the structure of tiny conductive silicone rubber products, it not only has ordinary silicon rubber high and low temperature resistance, ageing resistance, easy processing, conductive stability and thermal stability is also very good.   Because conductive silicone rubber has the advantages of small size, stable and reliable contact, good shockproof performance, convenient replacement, etc., used for printing circuit, radio integrated circuit, display, etc., the connection can save a lot of welding labor, simplify the assembly, reduce the volume, reduce the cost, improve the reliability.