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A silicone rubber composition and tear-resistant technology, applied in the field of polymer materials, can solve the problems of poor physical and mechanical properties, poor mechanical properties such as tensile strength and tear strength, and poor oil resistance and solvent resistance. Achieve excellent mechanical properties and outstanding tear resistance
Inactive Publication Date: 2013-01-16
汕头市科源有机硅材料有限公司
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However, the mechanical properties of silicone rubber such as tensile strength and tear resistance are poor, and its physical and mechanical properties are not as good as most synthetic rubbers at room temperature. Poor, so silicone rubber is not suitable for ordinary conditions, but very suitable for many specific occasions
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[0017] The components were prepared in the weight ratios shown in Table 1.
[0018] The weight proportion of table 1 embodiment 1~embodiment 3
[0019]
[0020]
[0021] The above-mentioned accelerator adopts dibenzothiazole disulfide.
[0022] The above-mentioned fumed white carbon black adopts No. 4 fumed white carbon black.
[0023] The above-mentioned coupling agent adopts silane coupling agent KH-550.
[0024] The preparation method is as follows:
[0025] S1: Mix vinyl silicone rubber, polyethylene, polyolefin resin, ethylene-vinyl acetate copolymer, and two-roll mill for 5 to 10 minutes, add naphthenic oil, white oil, vinyl silicone oil, hydroxyl silicone oil, Butyl ester, octamethylcyclotetrasilazane, mixed evenly;
[0026] S2: Add fumed silica, diphenylsilanediol, stearic acid, petrolatum, chlorinated paraffin, N-phenyl-α-naphthylamine, coupling agent, accelerator, and knead for 20 to 30 minutes;
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Abstract
The invention discloses a tearing-resistant silicone rubber composition, falling into the technical field of polymer material. The composition comprises the following materials by weight: 30-50 parts of vinyl silicone rubber, 5-10 parts of polyethylene, 5-10 parts of polyolefin resin, 3-6 parts of ethylene-vinyl acetate (EVA) copolymer, 2-4 parts of naphthene oil, 5-8 parts of white oil, 5-8 parts of vinyl silicone oil, 1-3 parts of hydroxyl silicone oil, 1-3 parts of dibutyl ester, 1-2 parts of octamethylcyclotetrasilazane, 2-4 parts of fumed silica, 1 part of magnesia, 1 part of titanium dioxide, 1 part of barium titanate, 1 part of zinc oxide, 2-4 parts of light calcium carbonate, 2-4 parts of lithopone powder, 1-3 parts of diphenylsilanediol, 3-8 parts of stearic acid, 4-6 parts of vaseline, 3-5 parts of chlorinated paraffin, 1-2 parts of N-phenyl-alpha-naphthylamine, 2-4 parts of a coupling agent, and 2-4 parts of accelerator. The silicone rubber composition has excellent mechanical properties, especially tearing-resistant property.
Description
technical field [0001] The invention provides a silicone rubber composition, in particular relates to a silicone rubber composition with excellent tear resistance, and belongs to the technical field of polymer materials. Background technique [0002] Silicone rubber is a synthetic polymer with a stable silicon-oxygen chemical structure. This unique molecular structure forms a main chain with alternating silicon atoms and oxygen atoms. Compared with other elastomers, silicone rubber has excellent heat resistance. Biocompatibility, low temperature resistance, chemical resistance, excellent electrical properties and natural transparency and translucency. The introduction of side groups in silicone rubber can significantly improve its physical and mechanical properties, temperature resistance and processing properties. According to the side groups of silicone rubber, there are mainly: dimethyl silicone rubber, methyl vinyl silicone rubber, methyl vinyl benzene Base silicone rub...
Claims
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Application Information
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