Heat shrinkable casing pipe and preparation method thereof
A technology of heat-shrinkable sleeves and ethylene, which is applied in the field of pipes, can solve problems such as adhesion and mutual self-adhesion of contact metal materials, and achieve the effects of simple processing, less dust, and better mixing effect
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Embodiment 1
[0026] Raw materials: 70 parts of ethylene-vinyl acetate copolymer (EVA), its melt index is 3-5g / 10min, its vinyl acetate (VA) content is 14%; vinyl acetate is also called vinyl acetate, vinyl acetate, vinyl acetate ;
[0027] 30 parts of linear low-density polyethylene, the melt index of which is 0.3-2g / 10min;
[0028] 15 parts of ethylene-octene copolymer, its melt index is 0.5-2g / 10min, and its octene content is 20-30%;
[0029] The compatibilizer is 2 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer (EVA-MA), and its grafting rate is 0.6-2.0%;
[0030] 60 parts of high-gloss calcium carbonate, the particle size of high-gloss calcium carbonate d 99 ≦15μm; 40 parts of superfine magnesium hydroxide, particle size of superfine magnesium hydroxide d 99 ≦15μm;
[0031] Lubricants include 5 parts of silicone rubber, 5 parts of silicone masterbatch, the content of silicone in the silicone masterbatch is 40%;
[0032] 3 parts of composite antioxidant, said co...
Embodiment 2
[0039] Raw material: 50 parts of ethylene-vinyl acetate copolymer (EVA), its melt index is 3-5g / 10min, and its vinyl acetate (VA) content is 18%;
[0040] 50 parts of low-density polyethylene, the melt index of which is 0.3-2g / 10min;
[0041] 5 parts of ethylene-octene copolymer, its melt index is 0.5-2g / 10min, and its octene content is 20-30%;
[0042] The compatibilizer is 5 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer (EVA-MA), and its grafting rate is 0.6-2.0%;
[0043] 50 parts of high-gloss calcium carbonate, the particle size of high-gloss calcium carbonate d 99 ≦15μm;
[0044] The lubricant comprises 5 parts of silicone rubber; 2 parts of composite antioxidant, which is composed of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and thio Compounded with dioctadecyl dipropionate, the tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and dioctadecyl thiodipropionate Serving ratio i...
Embodiment 3
[0051] Raw material: 60 parts of ethylene-vinyl acetate copolymer (EVA), its melt index is 3-5g / 10min, and its vinyl acetate (VA) content is 14%;
[0052] 35 parts of low-density polyethylene, the melt index of which is 0.3-2g / 10min;
[0053] 10 parts of ethylene-octene copolymer, its melt index is 0.5-2g / 10min, and its octene content is 20-30%;
[0054] The compatibilizer is 3 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer (EVA-MA), and its grafting rate is 0.6-2.0%;
[0055] 15 parts of antimony trioxide, the particle size d of antimony trioxide 99 ≦5μm; 35 parts of decabromodiphenylethane, the particle size of decabromodiphenylethane d 99 ≦5μm; 20 parts of ultra-fine aluminum hydroxide, particle size of ultra-fine aluminum hydroxide d 99 ≦15μm;
[0056] 8 parts of lubricant silicone oil; 1 part of composite antioxidant, which is composed of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and thiodipropylene It is co...
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