Silicone products have excellent resistance to high and low temperature resistance, generally in the high temperature of 180 DEG C under the long-term work. Silicone rubber in250 DEG C can work longer hours, the instantaneous power more than 1000 degrees Celsius temperature. Silicone material low temperature resistance performance is good, generally at - 55 DEG C can still work. Some silicone rubber at - 110 degrees C. There is elastic. Silicone material has good electrical insulating properties, dielectric properties do not change with temperature changes; dielectric constant with frequency increasing numerical; and arc resistance, corona resistance, leakage resistance; ozone resistance, radiation resistance, weather resistance, flame resistance, so the use is very extensive. According to the following silicone products of several major categories, respectively, a brief introduction to its part mainly uses: The 1 silane coupling agent silane coupling agent is a kind of low molecular compounds, and the silicon atom is connected with one end is able to hydrolyze chlorine or a variety of alkoxy, after hydrolysis with inorganic connected; another end has a variety of energy and organic matter are functional groups, such as amino acid, vinyl, thiol, the silane coupling agent the organic and inorganic bridging. Commonly used silane coupling agent has nearly 100. Such as glass steel with glass fiber to use vinyl silane coupling agents with improved wet strength. Current popular" green" tire on the extensive use of mercapto silane coupling agent; three with vinyl alkoxy silane crosslinked polyethylene, its working temperature than normal polyethylene and polyvinyl chloride high, suitable for hot water pipe, such as cable sheathing. 2silicone oil silicone containing single or different organic groups of low molecular weight silicone, can be made into various different viscosity. Silicone oil with low surface tension, contact angle with water, is the quality of water repellent material. Silicone oil viscosity temperature coefficient changes little, low temperature can not be solidified, is of both high temperature and low temperature resistance of aerospace gyro oil, antifreeze and heat resistance of lubricating oil, hydraulic oil, instrument oil base oil and vapor pressure, high vacuum oil diffusion pump etc.. Organic silicone oil or its modified preparation and its application in cosmetics in recent years to grow quickly. Silicone oil to apply on the skin is not greasy, smooth, comfortable feeling, can be made of a variety of skin care cream. According to the3silicon rubber vulcanization mechanism, silicone rubber can be divided into high temperature vulcanization silicone rubber ( HTV ); room temperature vulcanized silicone rubber ( RTV ) and additional liquid silicone rubber ( LSR ), with heat, cold resistance, ozone, UV resistant, atomic oxygen resistance, resistance to cosmic ray characteristics and waterproof, shockproof performance. LSR liquid silicone rubber ( also known as silica gel ) is a semiconductor chip and electronic device with excellent sealing and protection of material; high transmittance of 91% silicone gel is the requirement of high temperature resistance, moisture resistance, no yellow plane three windshield glass adhesive intermediate layer. LSR silicone rubber plastic mold used for engine parts precision casting. HTV and RTV yields in silicone products accounted for a significant portion ( generally40% ~50%), HTV uses RTV wide. (1) RTV at room temperature curing silicone rubber RTV is generally a hydroxyl terminated low molecular polysiloxane (107 glue ), with a catalyst, such as filler made of two-component or single component, easy to use and can be cured at room temperature silicone rubber, glass, ceramic, metal, concrete and other materials adhesive good, has been applied in full view of glass curtain wall, aluminum alloy doors and windows and other structural parts of the sealing of bonded, and the family bathroom restroom, such as plugging and sealing. RTV silicone rubber based ablation resistant heat insulating coating thermal conductivity is small, construction is convenient, used for rocket nozzle and return type spacecraft from ablative insulation material, but also the production of spacecraft components important materials. RTV silicone rubber or a variety of artistic carved decorative building materials of the flexible die. (2) the HTV high temperature vulcanization silicone rubber HTV is a high molecular weight (400000to 800000) of polyorganosiloxane, joining reinforcing fillers and other additives, curing, forming crosslinked into rubber. HTV silicon rubber composite insulators used on high-voltage power transmission and transformation, not only the weight of only1/ 5 of porcelain insulator of1/ 10, convenient to use, and high pollution flashover performance is good, can operate safely in the high voltage power grid. In order to carbon black as conductive medium HTV silicone rubber is used as the key pad, for the large number of mobile phone and computer keyboard; silicone rubber seal, gasket used to produce large, oil seals, industrial rubber roller, rubber, insulation products, medical products and so on. Silicone rubber insulated wires, cables fire-retardant for ships, aircraft and other high reliability. Silicone rubber having a physiologically inert, coagulation, disinfection and characteristics can be implanted in the human body, can be made of silicone rubber parts and can be used for a long time silicone rubber catheter, cannula, hydrocephalus drainage tube, peritoneal dialysis, and artificial heart lung machine such as blood transfusion pump. In addition silicone rubber has air permeability, on different permeability to gases of different. Oxygen transmission rate in synthetic polymers is the highest, as oxygen enrichment membrane, membrane for gas separation. 4silicone resin made from an insulating material with heat resistance and good insulation performance and belongs to class H, use it to produce motor has the advantages of small volume, light weight, high reliability, in short time overheating, overload condition will not burn. Preparation of silicone resin coating resistant to high temperature of 500 DEG C; silicone modified acrylic resin coating weatherability good, and hydrophobic, antifouling, advanced coatings for exterior wall. Silicone resin silicone plastic can be used for aircraft engines used in high voltage, strong current, arc resistant micro switch. Silicone material in a very wide range of uses, has the obvious effect. ( three) the silicone products silicone products in many categories, can be roughly divided into five categories, i.e.: 1high temperature vulcanization silicone rubber has the most commonly used methyl vinyl silicone rubber, hardy phenyl silicone rubber, oil resistance, solvent resistance of the fluorinated silicone rubber and silicone rubber, radiation resistant silicone rubber. For the convenience of use is often made from rubber is provided to the user. 2room temperature vulcanized silicone rubber by packing the form2k and single component branch. Two component consists of methyl phenyl, silicon, fluorine, silicon, phenylene cent; single component is divided into acid type, dealcoholizing, Deoximino-type, removal of amine type, de-amide type, and ketone type. 3silicone oil silicone oil can be divided into methyl silicone oil, ethyl silicone oil, methyl phenyl silicone oil, amino silicone oil, methyl hydrogen silicone oil, chlorinated phenyl silicone oil, silicone, fluorine nitrile silicone, silicone oil, long chain paraffin oil diffusion pump and modified silicone oil. There is a kind of great amount of silicone oil processing products, namely the silicone oil emulsion, such as fabric treatment agents is an example. 4silicone resin by the composition can be divided into methyl silicone resin, methyl phenyl silicone resin; according to the shape of a solvent type, solvent free. Silicone resin coating moulding powder is made, and a modified. The 5 silane coupling agent classification according to functional groups, silane coupling agent mainly vinyl silane, amino silane, epoxy silane, silane and methyl acryloyl alkoxy silane.
Copyright All Rights Reserved © SHENZHEN HONG YE JIE TECHNOLOGY Co.,Ltd 粤ICP备17107859号