Crack-resistant silicone rubber cable sheath material and preparation method thereof
A technology of cable sheath and silicone rubber, which is applied in the field of crack-resistant silicone rubber cable sheath material and its preparation, can solve the problems of shortening the service life of cable sheath material, unsatisfactory cable flame retardancy, and low mechanical properties. Achieve the effects of avoiding the decline of mechanical properties, enhancing the conductivity and antistatic properties, and having good compatibility
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Embodiment 1
[0027] The preparation method of flame retardant reinforcing agent comprises the following steps:
[0028] 1) Calculated in parts by weight, weigh 40 parts of hydrotalcite powder, 25 parts of slag, 10 parts of nano silicon dioxide, 3 parts of carboxymethyl cellulose and 0.6 parts of coupling agent KH5600 for later use;
[0029] 2) Firstly, adding hydrotalcite powder, slag, nano silicon dioxide and carboxymethyl cellulose into dimethylacetamide for stirring and dispersing to obtain a dispersion;
[0030] 3) Warm up the dispersion in step 2) to 85°C, add coupling agent KH560, stir and mix well, keep it warm for 3 hours, and then cool down to room temperature.
Embodiment 2
[0032] The preparation method of flame retardant reinforcing agent comprises the following steps:
[0033] 1) Calculated according to parts by weight, weigh 50 parts of hydrotalcite powder, 15 parts of slag, 15 parts of nano silicon dioxide, 6 parts of carboxymethyl cellulose and 1.8 parts of coupling agent KH570 for later use;
[0034] 2) Firstly, adding hydrotalcite powder, slag, nano silicon dioxide and carboxymethyl cellulose into dimethylacetamide for stirring and dispersing to obtain a dispersion;
[0035] 3) Warm up the dispersion liquid in step 2) to 75°C, add coupling agent KH570, stir and mix well, keep it warm for 4 hours, and then cool down to room temperature.
Embodiment 3
[0037] A kind of anti-cracking silicone rubber cable sheath material, comprising the following raw materials:
[0038] 70 parts of methyl vinyl silicone rubber, 17 parts of hydrogenated nitrile rubber, 19 parts of chlorinated polyethylene, 5 parts of ethoxylated trimethylolpropane triacrylate, 2 parts of tetramethylthiuram disulfide, paraffin wax 6 parts, 0.6 parts of antiaging agent RD, 12 parts of plasticizer, 4 parts of polyethylene wax, 12 parts of carbon black, 7 parts of silicon micropowder, 8 parts of flame retardant reinforcing agent of embodiment 1 and 6 parts of slag. The plasticizer is a mixture of dibutyl phthalate and polyether silicone oil.
[0039] Preparation method of anti-crack silicone rubber cable sheath material:
[0040] 1) Weigh methyl vinyl silicone rubber, hydrogenated nitrile rubber, chlorinated polyethylene, ethoxylated trimethylolpropane triacrylate, tetramethylthiuram disulfide, paraffin, anti-aging Agent RD, plasticizer, polyethylene wax, carbon...
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