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Soft PVC plastic for electric wire and cable

A soft polyvinyl chloride, wire and cable technology, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of increasing the cost of cable materials, increasing costs, complex processing, etc., and achieve small proportion and heat resistance stability And the effect of improved weather resistance and good processing performance

Active Publication Date: 2007-03-21
WUXI JIANGNAN CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although its composite stabilizer overcomes the disadvantages of environmental pollution caused by lead stabilizers, the composite stabilizer needs to be made separately, first after saponification reaction, and then purified and concentrated, the processing is complicated, and the cost is increased; secondly, the stabilizer Raw materials - calcium hydroxide and zinc hydroxide, the price is relatively high, which also increases the cost of cable materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Insulation grade 70°C soft polyvinyl chloride cable material (parts by weight)

[0021] 100 parts of polyvinyl chloride resin (SG-2 type);

[0022] 24-26 parts of dioctyl phthalate;

[0023] 15-17 parts of dioctyl terephthalate;

[0024] 4-5 parts of magnesium oxide (MgO);

[0025] Zinc oxide (ZnO) 4-5 parts;

[0026] 2 parts stearic acid;

[0027] 10-20 parts of modified calcined kaolin;

[0028] Just the right amount of pigment.

Embodiment 2

[0029] Example 2: Sheath grade 70°C soft polyvinyl chloride cable material (parts by weight)

[0030] 100 parts of polyvinyl chloride resin (SG-2 type);

[0031] 42-44 parts of dioctyl phthalate;

[0032] 5-7 parts of chlorinated paraffin;

[0033] 3-4 parts of magnesium oxide (MgO);

[0034] Zinc oxide (ZnO) 3-4 parts;

[0035] 2 parts stearic acid;

[0036] Active calcium carbonate 10-20 parts;

[0037] Just the right amount of pigment.

Embodiment 3

[0038] Embodiment 3: Insulation grade 105 ℃ soft polyvinyl chloride cable material (parts by weight)

[0039] 100 parts of polyvinyl chloride resin (SG-1 type);

[0040] 24-26 parts of dibutyl phthalate;

[0041] 50-55 parts of dipentaerythritol ester;

[0042] 4-5 parts of magnesium oxide (MgO);

[0043] Zinc oxide (ZnO) 4-5 parts;

[0044] 2 parts stearic acid;

[0045] Active calcium carbonate 2-5 parts;

[0046] Just the right amount of pigment.

[0047] Magnesium oxide and zinc oxide adopt rubber-grade light activated magnesia and rubber-grade zinc oxide produced by an indirect method, and are mixed and stirred with fatty acid and vinyltrimethoxysilane coupling agent (known method).

[0048] The above-mentioned cable materials are compounded and kneaded at high speed, extruded at 150-170°C, cut into pellets and packed for later use.

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Abstract

The PVC plastic material for electric wire and cable consists of PVC resin 100 weight portions, plasticizer 30-100 weight portions, magnesia 2-5 weight portions, zinc oxide 3-5 weight portions, stearic acid 2- 4 weight portions and filler 5-60 weight portions. The facile and cheap magnesia and zinc oxide as the heat stabilizer result in no toxicity, no bad smell, no harm to the operator, less environmental pollution, no degradation on the electric performance and secondary machining performance of the product. The PVC plastic material is superior to that with lead salt as stabilizer in that it has obviously raised heat stability and weather resistance.

Description

technical field [0001] The invention relates to a polyvinyl chloride plastic for wires and cables, in particular to a polyvinyl chloride cable material with environmental protection, good thermal stability and low cost. Background technique [0002] Due to its unique advantages, polyvinyl chloride has become the preferred material for cable insulation or sheathing. However, with the increasing environmental protection requirements, lead salt stabilizers in polyvinyl chloride production are gradually eliminated, and some new heat stabilizers continue to appear, such as Metal soaps, composite stabilizers, organotin (antimony) and rare earth stabilizers. But these thermostabilizers all still have respective deficiencies, as organotin stabilizer, still have toxicity mostly, and special odor is arranged; Mixture, the organotin stabilized compound disclosed in Chinese patent CN1088930, when this type of heat stabilizer is used alone, the thermal stability effect is often poor, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K5/09H01B3/44
Inventor 陈晓军夏亚芳蒋利云史明强蒋永卫邢娟
Owner WUXI JIANGNAN CABLE
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