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Method for preparing weather-resistant cable sheath material

A cable sheath and weather-resistant technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of environmental crack resistance, high and low temperature resistance and weather resistance, internal transmission medium leakage, long service life of rubber, etc., to achieve easy Improve cracking, eliminate internal stress, and have strong environmental cracking resistance

Inactive Publication Date: 2014-07-30
ANHUI HAIRONG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Rubber is a highly elastic polymer material with reversible deformation. It is elastic at room temperature. It can produce a large deformation under the action of a small external force, and it can return to its original shape after removing the external force. During use, due to friction with other objects, it will cause The rubber surface is damaged or even loses its original performance, and the rubber is used for too long, and the aging speed becomes faster, especially the abrasion and erosion of the rubber pipeline, which will lead to the leakage of the internal transmission medium, and under extreme conditions, Environmental cracking resistance, high and low temperature resistance and weather resistance are poor

Method used

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  • Method for preparing weather-resistant cable sheath material
  • Method for preparing weather-resistant cable sheath material
  • Method for preparing weather-resistant cable sheath material

Examples

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preparation example Construction

[0014] refer to figure 1 , a preparation method of a weather-resistant cable sheath material, comprising the steps of:

[0015] S1. Weigh 60-75% PVC resin, 3-15% linear low-density PE resin and 15-25% ethylene-vinyl acetate copolymer to obtain the main material by weight percentage, and place the prepared main material in a single screw Blend in the extruder and granulate to get the base resin, turn on the internal mixer and preheat to 40-60°C, then add the above base resin for banburying, the mixing time is 1-3min, and raise the temperature to 80-90°C Tempering for 4-5 minutes;

[0016] S2. Add plasticizer equivalent to 1-3wt% of the main material, 4-8wt% (talcum powder + nano calcium carbonate), 2-3.5wt% stabilizer, 15-20wt% MBS to the prepared material Resin, 0.05-0.1wt% of lubricating additives are mixed evenly, and the weight ratio of talcum powder to nano-calcium carbonate is 1: (1-2.5); among them, plasticizers, fillers, talcum powder and nano-calcium carbonate are ad...

Embodiment 1

[0019] A preparation method for a weather-resistant cable sheath material, comprising the steps of:

[0020] S1. Take 60% PVC resin, 15% linear low-density PE resin and 25% ethylene-vinyl acetate copolymer and mix them evenly to obtain the main material by weight percentage, and place the prepared main material in a single-screw extruder for blending, Pellet to obtain the base resin, turn on the internal mixer and preheat to 60°C, then add the above base resin for banburying, the mixing time is 1min, and banburying for 4min when the temperature rises to 80°C;

[0021] S2, add the plasticizer equivalent to main material 2.8wt% in the prepared material, 7wt% (talcum powder+nanometer calcium carbonate), the stabilizer of 2.3wt%, the MBS resin of 15wt%, the lubricant of 0.85wt% The additives are mixed evenly, and the weight ratio of talcum powder to nano-calcium carbonate is 1:1.7; the plasticizer, filler, talc powder and nano-calcium carbonate are added alternately in stages duri...

Embodiment 2

[0024] A preparation method for a weather-resistant cable sheath material, comprising the steps of:

[0025] S1. Weigh 75% PVC resin, 5% linear low-density PE resin and 20% ethylene-vinyl acetate copolymer and mix uniformly to obtain the main material by weight percentage, and place the prepared main material in a single-screw extruder for blending, Granulate to obtain the base resin, turn on the internal mixer and preheat to 40°C, then add the above base resin for banburying, the banburying time is 2.5min, when the temperature rises to 85°C, banburying 5min;

[0026] S2, add the plasticizer equivalent to main material 2.5wt% in the prepared material, 7wt% (talcum powder+nanometer calcium carbonate), the stabilizer of 2wt%, the MBS resin of 20wt%, the lubricating aid of 0.067wt% The agent is mixed evenly, and the weight ratio of talcum powder and nano-calcium carbonate is 1:2.5; the plasticizer, filler, talcum powder and nano-calcium carbonate are added alternately in stages d...

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Abstract

The invention discloses a method for preparing a weather-resistant cable sheath material. The method comprises the following steps: weighing a PVC (Polyvinyl Chloride) resin, a linear low-density PE (Poly Ethylene) resin and an ethylene-vinyl acetate copolymer, uniformly mixing to obtain a main material, putting the prepared main material into a single screw rod extruder for commixing, pelleting to obtain a basic resin, adding the basic resin into an internal mixer, mixing, subsequently adding a plasticizer, talcum powder, nano calcium carbonate, an MBS (Methacrylate-Butadiene-Styrene) resin, a filler and a lubrication additive, uniformly mixing, adding dipentamethy lene thiuram hexasulfide and N,N'-m-phenylene bismaleimide when the temperature of the material is kept at 102-105 DEG C, mixing for 30-60 minutes, thinning, and extruding to obtain the weather-resistant cable sheath material, wherein the extrusion temperature is 180-195 DEG C, and the pressure intensity of the steam is controlled at 1-1.5MPa in the extrusion process. The weather-resistant cable sheath material is high in hardness, is abrasion-resistant, good in environment crack resistance, excellent in weather resistance and simple in preparation method.

Description

technical field [0001] The invention relates to the technical field of sheath materials for high-voltage cables, in particular to a preparation method of weather-resistant cable sheath materials. Background technique [0002] Rubber is a highly elastic polymer material with reversible deformation. It is elastic at room temperature. It can produce a large deformation under the action of a small external force, and it can return to its original shape after the external force is removed. During use, due to friction with other objects, resulting in The surface of the rubber is damaged or even loses its original performance, and the rubber is used for too long, and the aging speed becomes faster, especially the wear and erosion of the rubber pipeline, which will lead to the leakage of the internal transmission medium, and under extreme conditions, Environmental cracking resistance, high and low temperature resistance and weather resistance are poor. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/08C08L51/04H01B3/44H01B7/28C08K13/02C08K3/34C08K3/26C08K5/40C08K5/3415B29C47/92B29C48/92
CPCB29B7/72B29B7/40B29B9/06B29B9/12B29B2009/125B29C48/04B29C48/397B29C48/92B29C2948/92514B29C2948/92704
Inventor 魏金春彭群朱立春王冠云
Owner ANHUI HAIRONG CABLE
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