Heat-insulation anti-ablation silicone rubber for cable
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A silicone rubber, ablation-resistant technology, used in insulated cables, rubber insulators, cables, etc., can solve the problems of weak molecular chain interaction, poor mechanical strength, and large molecular flexibility, to avoid processing difficulties and wear resistance. Good, good flame retardant performance
Inactive Publication Date: 2017-03-29
ANHUI LVHUAN ELECTRIC CO LTD
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However, the molecular flexibility of silicone rubber is large, and the interaction force between molecular chains is weak, resulting in poor mechanical strength. Effective cross-linking methods must be used to improve its mechanical properties and broaden its application range.
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[0013] A heat-insulating and ablation-resistant silicone rubber for cables, which is prepared from the following raw materials in parts by weight (kg): MVQ silicone rubber 60, polyurethane elastomer 25, maleic anhydride grafted polystyrene 5, tetrapropylene fluorine rubber 10 , photoinitiator benzophenone 0.1, crosslinking agent TAIC0.1, ferric chloride 3.6, ferric chloride 6, mica 20, low melting point glass powder 10, polyethylene glycol 1.6, ferrous sulfate 1.8, carbonic acid Ammonium hydrogen 2.5, graphite 4, attapulgite 6, silane coupling agent A172 0.2, phenolic resin 7, phenoxy polyphosphazene 1.8, dioctyl sebacate 1, absolute ethanol 47, deionized water in proper amount.
[0014] The heat-insulating and ablation-resistant silicone rubber for cables is prepared by the following specific steps:
[0015] (1) Dissolve ferric chloride and ferric trichloride in deionized water, place in a constant temperature water bath at 50°C, stir until the solution is evenly mixed, then ...
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Abstract
The invention discloses a heat-insulation anti-ablation silicone rubber for a cable. The heat-insulation anti-ablation silicone rubber for the cable is prepared from the following raw materials: MVQ (Methyl Vinyl Silicone Rubber), a polyurethane elastomer, maleic anhydride-grafted polystyrene, tetrapropyl fluoro elastomer, photoinitiator benzophenone, a cross-linking agent (TAIC), ferrous chloride, ferric trichloride, mica, low-melting-point glass powder, polyethylene glycol, ferrous sulfate, ammonium bicarbonate, graphite, attapulgite, a silane coupling agent A172, phenolic resin, phenoxyl polyphosphazene, dioctyl sebacate, absolute ethyl alcohol and appropriate amount of deionized water. The cable material provided by the invention is good in abrasive resistance, high in heat insulation, and good in flame retardant property, has favorable high-temperature resistance and chemical resistance, and is low temperature resistant, ageing resistant, superior in mechanical performance, green and environmentally friendly, and worth popularizing.
Description
technical field [0001] The invention relates to the technical field of cables, in particular to a heat-insulating and ablation-resistant silicone rubber for cables. Background technique [0002] Silicone rubber is a kind of polymer compound with repeated Si-O bonds as the main chain and organic groups such as methyl, vinyl, and phenyl in the side chains. Due to the special structure, silicone rubber has excellent properties, such as aging resistance, high and low temperature resistance, weather resistance, solvent resistance, electrical insulation properties, inertness to external heat flow and relatively low heat release rate, etc. The gas produced when pure silicone rubber burns is non-toxic and will not cause dripping. The residue after burning is silicon dioxide, which covers the surface of the polymer and plays a role in blocking heat transfer and mass transfer. Due to these excellent properties of silicone rubber, it is widely used in the fields of cables, wires, aero...
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