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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

Inactive Publication Date: 2018-03-13
SHANGHAI CHANGYUAN ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a heat-shrinkable sleeve, which can solve the problems of mutual self-adhesion or adhesion between metal materials in contact with the heat-shrinkable sleeve when the heat-shrinkable sleeve is used in high-temperature processing or other high-temperature environments.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a heat shrinkable casing pipe. The casing pipe comprises the following components in parts by weight: 50-70 parts of an ethylene-vinyl acetate copolymer, 30-50 parts of polyethylene, 5-15 parts of an ethylene-octylene copolymer, 2-5 parts of a compatilizer, 50-100 parts of an inorganic filler or a flame retardant, 5-10 parts of a lubricant, 1-3 parts of a composite antioxidant and 0-3 parts of color master batches. The casing pipe provided by the invention has a self-adhesion prevention effect, and even when the heat shrinkable casing pipe is used in batches, and used in a high-temperature machining state or other high-temperature environments, the phenomena of mutual adhesion or adhesion with metal materials which is in contact with the casing pipe can be avoided,so that the production efficiency is ensured and the appearance quality of products is prevented from being damaged.

Description

technical field [0001] The invention relates to the technical field of pipe materials, in particular to a heat-shrinkable sleeve and a preparation method thereof. Background technique [0002] Heat shrinkable sleeves, also known as heat shrinkable protective sleeves, provide insulation protection for wires, cables and wire terminals. Due to the advantages of high-temperature shrinkage, softness, flame retardancy, and insulation and corrosion resistance, heat shrinkable sleeves are widely used for insulation protection of various wiring harnesses, solder joints, and inductors, as well as rust and corrosion protection for metal pipes and rods. [0003] When using heat-shrinkable sleeves in electronic and electrical applications, the heat-shrinkable sleeves are placed on the outer layer of the metal sample (aluminum or copper or metal alloy) for protection. Usually, a large heat oven or tunnel furnace is used for heat shrinkage. [0004] However, when heat-shrinkable sleeves a...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L51/06C08L83/04C08K13/02C08K3/26C08K3/22C08K5/134B29C69/00B29C47/92B29C35/08B29C48/92
CPCB29C35/08B29C48/001B29C48/92B29C2948/92704C08L23/06C08L23/0853C08L2203/18C08L2205/025C08L2205/035C08L2207/066C08L23/0815C08L51/06C08L83/04C08K13/02C08K2003/265C08K2003/2224C08K2003/2227C08K3/2279C08K5/1345
Inventor 龙鹏
Owner SHANGHAI CHANGYUAN ELECTRONICS MATERIAL
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