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Environment-friendly wear-resisting semi-rigid heat-shrinkable tube for protecting car metal pipeline and preparation method thereof

A metal pipe, semi-rigid technology, applied in the direction of pipeline protection, pipeline damage/abrasion prevention, pipes/pipe joints/pipe fittings, etc., can solve the problems of narrow distance and space, loss of personnel and property, and rupture of metal pipelines, etc. Achieve the effect of simple preparation method, high cost performance and prolong service life

Inactive Publication Date: 2015-07-22
大连联合高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the limited space of the car, the distance and space between many parts are narrow, which may cause friction between the parts due to vibration during the operation of the vehicle, causing the related parts to wear out. At the same time, when the vehicle is in use, the metal of the car The pipeline will be affected by the corrosion and moisture of oil, liquid, etc., if the brake oil pipe, fuel line pipe, hydraulic pipe, etc. are not well protected, there may be wear and corrosion, and the metal pipe will break and leak. Oil, etc., which in turn may lead to accidents when the vehicle is in use, which will cause personal and property losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The raw material composition of the outer wall of the single-wall heat-shrinkable tube / double-wall heat-shrinkable tube: 60 parts of low-density polyethylene; 40 parts of ethylene-vinyl acetate copolymer; 20 parts of finely activated kaolin; 1.5 parts of antioxidant; 0.6 parts of stearic acid part; 0.6 part of zinc stearate; 3.5 parts of carbon black masterbatch;

[0021] The inner wall of the double-wall heat-shrinkable tube: modified ethylene-vinyl acetate hot melt adhesive, the softening point is 95°C, and the viscosity is 60000-70000mPa.S / 160°C;

[0022] First, put low-density polyethylene, ethylene-vinyl acetate copolymer, antioxidant, stearic acid, zinc stearate and carbon black masterbatch into the mixer according to the above ratio, stir at high speed in the mixer, stir for 3 minutes, and then put into fine activation Kaolin, then high-speed stirring again, when the mixing temperature reaches 50 ℃, the mixing is completed, and finally the uniformly mixed mate...

Embodiment 2

[0024] The raw material composition of the outer wall of the single-wall heat-shrinkable tube / double-wall heat-shrinkable tube: 70 parts of low-density polyethylene; 30 parts of ethylene-vinyl acetate copolymer; 25 parts of finely activated kaolin; 1.8 parts of antioxidant; calcium stearate 0.5 parts; 0.5 parts of zinc stearate; 0.3 parts of polyethylene wax; 4 parts of carbon black masterbatch;

[0025] The inner wall of the double-wall heat-shrinkable tube: modified ethylene-vinyl acetate hot melt adhesive. The softening point is 100°C, the viscosity is 65000-75000mPa.S / 160°C;

[0026] First put low-density polyethylene, ethylene-vinyl acetate copolymer, antioxidant, calcium stearate, zinc stearate, polyethylene wax and carbon black masterbatch into the mixer according to the above ratio and stir at high speed for 4 minutes Then add fine activated kaolin, and then stir again at high speed. When the mixing temperature reaches 65°C, the mixing is completed. Finally, the ...

Embodiment 3

[0028] The raw material composition of the outer wall of the single-wall heat-shrinkable tube / double-wall heat-shrinkable tube: 50 parts of low-density polyethylene; 25 parts of ethylene-vinyl acetate copolymer; 30 parts of finely activated kaolin; 2.0 parts of antioxidant; 0.6 parts of stearic acid 0.3 part of calcium stearate; 0.6 part of zinc stearate; 0.5 part of polyethylene wax; 5 parts of carbon black masterbatch;

[0029] The inner wall of the double-wall heat-shrinkable tube: modified ethylene-vinyl acetate hot melt adhesive, the softening point is 95°C, and the viscosity is 60000-70000mPa.S / 160°C;

[0030] First, input low-density polyethylene, ethylene-vinyl acetate copolymer, antioxidant, stearic acid, calcium stearate, zinc stearate, polyethylene wax and carbon black masterbatch in the mixer according to the above ratio and stir at high speed After stirring for 3 minutes, add fine activated kaolin, and then stir again at a high speed. When the temperature of th...

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Abstract

The invention discloses an environment-friendly wear-resisting semi-rigid heat-shrinkable tube for protecting a car metal pipeline and a preparation method thereof. The heat-shrinkable tube is mainly prepared from the following ingredients in parts by weight: 50-75 parts of low-density polyethylene, 25-50 parts of an ethylene-vinyl acetate copolymer, 20-30 parts of an inorganic filler, 1.5-2.0 parts of an antioxidant, 1.0-2.0 parts of a lubricant and 3-6 parts of carbon black masterbatch. The preparation method comprises the following steps: granulation, extrusion, irradiation and expansion with a two-step mixing method. The heat-shrinkable tube has good adhesive strength with the car pipeline, the phenomena of separation from the pipeline and pleating of the heat-shrinkable tube cannot occur in the bending operation, and the sealing is ensured. Meanwhile, the environment-friendly wear-resisting semi-rigid heat-shrinkable tube has the characteristics of being easy and convenient to mount, high in performance cost ratio, safe and durable and can effectively prolong the service life of the car pipeline and reduce the potential safety hazards of vehicles during use.

Description

technical field [0001] The invention relates to an environment-friendly wear-resistant semi-rigid heat-shrinkable tube for protecting automobile metal pipelines and a preparation method thereof, belonging to the field of automobile metal pipeline protection. Background technique [0002] Due to the limited space of the car, the distance and space between many parts are narrow, which may cause friction between the parts due to vibration during the operation of the vehicle, causing the related parts to wear out. At the same time, when the vehicle is in use, the metal of the car The pipeline will be affected by the corrosion and moisture of oil, liquid, etc., if the brake oil pipe, fuel line pipe, hydraulic pipe, etc. are not well protected, there may be wear and corrosion, and the metal pipe will break and leak. oil, etc., which in turn may lead to accidents when the vehicle is in use, which will cause personal and property losses. Contents of the invention [0003] In view...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K13/06C08K3/34C08K5/09C08K5/098C08K3/04F16L57/06
CPCC08L23/06C08J3/223C08J2323/06C08K2201/014C08L2203/18C08L2205/025C08L2205/03C08L2207/066C08L2312/06F16L57/06C08L23/0853C08K13/06C08K3/346C08K5/09C08K5/098C08K3/04
Inventor 杨洋
Owner 大连联合高分子材料有限公司
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