Double-wall hot pyrocondensation pipe for automobile metal pipeline and preparation method for double-wall hot pyrocondensation pipe

A technology of double-walled heat-shrinkable tubes and metal tubes, applied in the direction of pipes/pipe joints/fittings, pipe protection, mechanical equipment, etc., can solve the problems of vehicle accidents, parts wear, personnel and property, etc., to prolong the service life, Low production cost, stress relief effect

Inactive Publication Date: 2016-12-07
苏州泰斯拓伟机电设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the limited internal space of the car, the distance between many parts is too small, which may cause the parts to rub against each other and wear during the operation of the vehicle; It will be affected by the corrosion and moisture of oil, liquid, etc. If it is not well protected, there may be wear and corrosion, resulting in pipeline rupture, oil leakage, etc., which may cause the vehicle to appear in use. Accidents, resulting in loss of personnel and property, the problem should not be underestimated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: A double-walled heat-shrinkable tube for automotive metal pipelines.

[0025] (1) Weigh 40 kg of low-density polyethylene, 20 kg of ethylene-methyl acrylate copolymer, 5 kg of nano-active calcium carbonate (particle size 25 nm), 1 kg of magnesium stearate, 1 kg of dibutyl hydroxytoluene and Nano-carbon black (particle size is 20 nm) 3 kg, and mixed evenly to obtain a premix;

[0026] (2) The premix obtained in step (1) is mixed and granulated on a twin-screw extruder equipped with an internal mixer, and co-extruded with ethylene-methyl acrylate copolymer on a single-screw extruder to obtain double wall pipe;

[0027] (3) The double-walled tube obtained in step (2) was radiated and cross-linked at 150 kGy, heated to expand twice, and quenched to form a double-walled heat-shrinkable tube for automotive metal pipelines.

Embodiment 2

[0028] Example 2: A double-wall heat-shrinkable tube for automotive metal pipelines.

[0029] (1) Weigh 80 kg of low-density polyethylene, 50 kg of ethylene-methyl acrylate copolymer, 15 kg of nano-active calcium carbonate (with a particle size of 100 nm), 3 kg of magnesium stearate, 3 kg of dibutyl hydroxytoluene and Nanometer carbon black (particle size is 50 nm) 8 kg, and mix evenly, obtain the premix;

[0030] (2) The premix obtained in step (1) is mixed and granulated on a twin-screw extruder equipped with an internal mixer, and co-extruded with ethylene-methyl acrylate copolymer on a single-screw extruder to obtain double wall pipe;

[0031] (3) The double-walled tube obtained in step (2) was radiated and cross-linked at 150 kGy, heated to expand twice, and quenched to form a double-walled heat-shrinkable tube for automotive metal pipelines.

Embodiment 3

[0032] Example 3: A double-walled heat-shrinkable tube for automotive metal pipelines.

[0033] (1) Weigh 50 kg of low-density polyethylene, 30 kg of ethylene-methyl acrylate copolymer, 8 kg of nano-active calcium carbonate (30 nm in particle size), 1 kg of magnesium stearate, 1 kg of dibutyl hydroxytoluene and Nano-carbon black (particle size is 30 nm) 4 kg, and mixed evenly to obtain a premix;

[0034] (2) The premix obtained in step (1) is mixed and granulated on a twin-screw extruder equipped with an internal mixer, and co-extruded with ethylene-methyl acrylate copolymer on a single-screw extruder to obtain double wall pipe;

[0035] (3) The double-walled tube obtained in step (2) was radiated and cross-linked at 150 kGy, heated to expand twice, and quenched to form a double-walled heat-shrinkable tube for automotive metal pipelines.

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Abstract

The invention discloses a double-wall hot pyrocondensation pipe for an automobile metal pipeline and a preparation method for the double-wall hot pyrocondensation pipe. Particularly, the double-wall hot pyrocondensation pipe for the automobile metal pipeline comprises an outer wall and an inner wall, wherein the outer wall is prepared from the following components in parts by weight: 40-80 parts of polyolefin, 20-50 parts of an olefin-acrylate copolymer, 5-15 parts of nanometer active calcium carbonate, 1-3 parts of a lubricant, 1-3 parts of an antioxidant and 3-8 parts of nano-carbon black; and the inner wall is the olefin-acrylate copolymer. The double-wall hot pyrocondensation pipe meets the wear resistance experiments for 140 thousand times required by an automobile factory and meets the RoHS standard. When being particularly applied, the double-wall hot pyrocondensation pipe is adhered to the surface of the automobile metal pipeline through baking of a baking tunnel so as to have the actions of stress relieving and anti-wearing protection on the automobile pipeline; and meanwhile, the inner wall of the double-wall pipe form an effective barrier for oil, liquid and steam of an automobile, thus the automobile metal pipeline is prevented from being influenced by corrosion and moisture.

Description

technical field [0001] The invention belongs to the field of automobile metal pipeline protection, and relates to a double-wall heat-shrinkable tube for automobile metal pipelines and a preparation method thereof. Background technique [0002] Due to the limited internal space of the car, the distance between many parts is too small, which may cause the parts to rub against each other and wear during the operation of the vehicle; It will be affected by the corrosion and moisture of oil, liquid, etc. If it is not well protected, there may be wear and corrosion, resulting in pipeline rupture, oil leakage, etc., which may cause the vehicle to appear in use. Accidents, resulting in loss of personnel and property, the problem should not be underestimated. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a double-wall heat-shrinkable tube for automobile metal pipelines and its preparation method, which aims to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L57/00F16L57/06F16L58/10C08L23/06C08L23/08C08K13/02C08K3/26C08K5/098C08K3/04C08K5/13
CPCF16L57/00C08K2201/003C08K2201/011C08K2201/014C08L23/06C08L2203/18C08L2207/066C08L2312/06F16L57/06F16L58/10C08L23/0869C08K13/02C08K2003/265C08K5/098C08K3/04C08K5/13
Inventor 周运
Owner 苏州泰斯拓伟机电设备有限公司
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