(1) Methyl room temperature vulcanized silicone rubber is an old variety of general-purpose silicone rubber, which has the advantages of water resistance, ozone resistance, arc resistance, corona resistance and weathering resistance. It can be used in the temperature range of 60～200℃. Therefore, it is widely used as a filling and sealing material for electronic and electrical components, and a moisture-proof, shockproof, high and low temperature resistant filling and sealing material for instruments and meters. It can also be used to make molds for casting polyester resin, epoxy resin and low melting point alloy parts. It can also be used as a dental impression material. Coated with methyl room temperature vulcanized silicone rubber on cotton cloth and paper bags, it can be made into conveyor belts and packaging bags for conveying sticky items. Rubber Technology Network


　　 (two) methyl bisphenyl room temperature vulcanization silicone rubber has the excellent properties of methyl room temperature vulcanization silicone rubber, and has a wider service temperature range (-100～250℃) than methyl room temperature vulcanization silicone rubber. Low-phenyl room temperature vulcanized silicone rubber (108-1) with a phenyl content of 2.5 to 5% can maintain elasticity at low temperatures of -120°C. It is currently the best variety of silicone rubber with low temperature performance; the phenyl content is 10 ～20% room temperature glue (108-2) has good radiation resistance, ablation resistance and self-extinguishing properties. If a certain amount of heat-resistant additives such as Fe2O3 is added to it, the thermal aging performance can be improved. It is suitable for 250 Use at high temperatures above ℃ or as ablation resistant putty coating and encapsulation materials.


　　 Methyl phenyl room temperature glue, like other room temperature glues, can be used for dipping, impression and stripping. If you want to increase the adhesion to other materials, you must perform surface treatment on the material to be adhered before using the material. The surface treatment steps are as follows: clean the surface of the material with acetone solvent for 1 to 2 times, and then treat it with a surface agent 1 ～2 times, bake in an oven at 60℃ for several minutes. At this time, a layer of less sticky film is formed on the surface of the material, and the glue can be applied.


(3) Methyl block room temperature vulcanization silicone rubber is a modified variety of methyl room temperature vulcanization silicone rubber. It is composed of hydroxyl-capped polydimethylsiloxane (107 glue) and methyl triethoxysilane. A copolymer of polymers (molecular weight 3 to 5). Under the catalysis of dibutyl tin dilaurate, the hydroxyl groups in polydimethylsiloxane and the ethoxy groups in polymethyltriethoxysilane condense to form a three-directional structure polymer, which is elastic after vulcanization The body has higher mechanical strength and adhesion than methyl room temperature vulcanized silicone rubber, and can be used for a long time in the temperature range of 70-200°C.


　　 Methyl block room temperature vulcanized silicone rubber has shockproof, moisture-proof, waterproof, breathable, ozone-resistant, weather-resistant aging, and weak acid and weak alkali resistance. Its electrical insulation performance is very good, also has very good adhesion, and the cost is low. Therefore, it can be widely used in potting, coating, impression, demolding, release of drug carriers and other occasions. Electronic components potted with methyl block room temperature glue have the functions of shockproof, moisture-proof, sealing, insulation, and stability of various parameters. Coating methyl block room temperature glue directly on the speaker can reduce and eliminate the mid-frequency points of the speaker. After vulcanization, the speaker's resonance frequency performance can be reduced by about 20 Hz. It can be used as a paper release agent after adding a certain amount of additives into the methyl block room temperature glue. After coating a thin layer of methyl block room temperature glue on the candy and biscuit conveyor belt in the food industry, it can improve the anti-stick performance of the canvas, thereby improving the appearance of the food and increasing the utilization rate of raw materials.


　　 Add an appropriate amount of fumed silica to the methyl block room temperature glue, which can be used to install window glass, curtain walls, window frames, joints of prefabricated panels, and expansion joints of airport runways. In addition, it can also be used as an adhesive for magnetic cores and templates in electronic computer storage, and as an adhesive for conductive silicone rubber and non-conductive silicone rubber. Treating the fabric with methyl block room temperature vulcanized silicone rubber can improve the feel, softness and abrasion resistance of the fabric.


(4) Room temperature vulcanized nitrile silicone rubber is poly β-nitrile ethyl methyl siloxane. In addition to the light resistance, ozone resistance, moisture resistance, high and low temperature resistance and excellent electrical insulation properties of silicon rubber, the main characteristics It has good resistance to non-polar solvents such as aliphatic and aromatic solvents. Its oil resistance is similar to ordinary oil-resistant nitrile rubber. It can be used as a sealed injection pot for oil-contaminated parts and oil-resistant electronic components.


　　(5) Room temperature vulcanized fluorosilicone rubber is poly γ-trifluoropropyl methyl siloxane. Its main characteristics are fuel oil resistance, solvent resistance, high temperature degradation resistance, and good extrusion performance. Mainly used for the sealing and caulking of the integral fuel tank of supersonic aircraft, the bonding and fixing of fluorosilicone rubber gaskets and gaskets; the bonding of silicone rubber and fluorosilicone rubber, as well as fuel oil resistance in chemical engineering and general industry; solvent resistance parts Of bonding.


　　(6) Room temperature vulcanized phenylene silicone rubber is a silicobenzene (biphenyl) siloxane polymer. Its outstanding advantage is that it has excellent resistance to high energy rays. Tests have proved that after being irradiated by 1x109 Roentgen gamma-rays or 1x1018 neutrons/cm2 neutrons, it can still maintain rubber elasticity, which is 10-15 times larger than room temperature vulcanized methyl silicone rubber, and 5~ larger than room temperature vulcanized phenyl silicone rubber. 10 times.


　　 room temperature vulcanized phenylene silicone rubber can be used in nuclear power industry, nuclear power plant and space flight as high temperature and radiation resistant adhesive sealing material and motor insulation protection layer.