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Heat-resistant polyvinyl chloride material, preparation method thereof and wire

A polyvinyl chloride and polyvinyl chloride resin technology, applied in circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problems of high cost, limited wide application, poor low temperature brittleness, etc. Cost, effect of good mechanical and physical properties

Active Publication Date: 2015-07-29
FUTONG GROUP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The heat-resistant polyvinyl chloride cable material provided by the prior art has excellent mechanical strength, thermal stability, weather resistance, aging resistance, wear resistance and other properties, and has a good flame retardant effect. After the flame disappears, the flame can be extinguished quickly without delay. Burning other materials, the amount of smoke is less when burning, and can be used for a long time at 105 ° C, which improves the service life of wires and cables; but this heat-resistant PVC material has poor low temperature brittleness and high cost, which limits its use. widely used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0085] The invention provides a method for preparing a heat-resistant polyvinyl chloride material, comprising:

[0086] Polyvinyl chloride resin powder, trioctyl trimellitate, filler, Ca-Zn composite stabilizer, ethylene-n-butyl acrylate-hydroxyl elastomer and flame retardant are mixed to obtain a mixture; the filler includes carbonic acid Calcium and kaolin, the flame retardant includes Sb 2 o 3 and / or Sb 2 o 3 Alternatives, the Sb 2 o 3 The substitutes are in parts by weight, including: 45 to 46 parts of silicon dioxide; 30 to 35 parts of magnesium oxide; 8 to 9 parts of montmorillonite; 2 to 2.5 parts of zinc oxide; 5.5 parts of aluminum oxide; 1 to 1.5 parts of copper oxide;

[0087] The mixture is mixed to obtain an intermediate product;

[0088] The intermediate product is vulcanized to obtain a heat-resistant polyvinyl chloride material.

[0089] The invention mixes polyvinyl chloride resin powder, trioctyl trimellitate, filler, Ca-Zn composite stabilizer, ethyl...

Embodiment 1

[0113] The raw material ratio of preparing heat-resistant PVC material is:

[0114] 100g of PVC resin powder;

[0115] 50g of TOTM;

[0116] 20g of ground calcium carbonate;

[0117] 5g of kaolin;

[0118] The Ca-Zn composite stabilizer of 5g;

[0119] 2g of Sb 2 o 3 ;

[0120] 1g of Sb 2 o 3 substitution;

[0121] 7g of HP441.

[0122] The above-mentioned raw materials were mixed uniformly under stirring conditions to obtain a mixture; the mixture was mixed for 15 minutes at 160° C. in a HZ-7015 rubber mixer provided by Shanghai Hengzhun Instrument Technology Co., Ltd. to obtain an intermediate product; The intermediate product is vulcanized at 170°C in a HZ-7014 model vulcanizer provided by Shanghai Hengzhun Instrument Technology Co., Ltd. to obtain a heat-resistant PVC material. The preheating time in the vulcanization process is 5 minutes, and the pressurization time is 5 minutes. 5 minutes, pressurization pressure is 20MPa, cooling time is 5 minutes.

[0123] ...

Embodiment 2

[0126] The heat-resistant PVC material was prepared according to the method described in Example 1. The difference from Example 1 was that 5 g of HP441 was used to replace 7 g of HP441 in Example 1.

[0127] According to the method described in the above technical solution, the density, thermal stability, volume resistivity, low-temperature brittleness, oxygen index and hardness of the heat-resistant PVC material prepared in Example 2 of the present invention were tested. The test results are shown in Table 1.

[0128] The cost of the heat-resistant PVC material prepared in Example 2 of the present invention is 10.23 yuan / Kg.

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Abstract

The invention provides a heat-resistant polyvinyl chloride material which is prepared from the following raw materials: 100 parts of polyvinyl chloride resin powder, 45-52 parts of trioctyl trimellitate and 22-31 parts of a filling agent which comprises calcium carbonate and kaoline, 3-8 parts of Ca-Zn composite stabilizer, 4-7 parts of ethylene-n-butyl acrylate-hydroxy elastomer and 1.5-5 parts of a flame retardant; the flame retardant comprises Sb2O3 and / or an Sb2O4 substitute. The heat-resistant polyvinyl chloride material provided by the invention is higher in low-temperature fragility and lower in cost; furthermore, the heat-resistant polyvinyl chloride material is higher in mechanical physical performance and heat stability. An experiment result shows that the low-temperature fragility of the heat-resistant polyvinyl chloride material is -11 DEG C to -21 DEG C. The invention further provides a preparation method of the heat-resistant polyvinyl chloride material and a wire.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride materials, in particular to a heat-resistant polyvinyl chloride material and electric wires. Background technique [0002] The insulating material used in domestic wires is generally heat-resistant polyvinyl chloride (PVC) material. As the insulating material of wires, there are high requirements for the thermal stability of heat-resistant PVC materials. At the same time, heat-resistant PVC materials must also meet the insulation properties. Requirements, the volume resistivity at 30°C must reach 10 12 Ω·cm or more. [0003] The Chinese patent application number 201410284164.1 discloses a heat-resistant 105°C polyvinyl chloride cable material and its preparation method, which is made of the following raw materials in parts by weight: 100 parts of S-70 polyvinyl chloride resin, 15 to 20 parts of Bisphenol A polycarbonate, 8-12 parts of chlorinated polyethylene, 25-35 parts of trioctyl ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/08C08K13/02C08K5/12C08K3/26C08K3/34C08K3/22C08K3/36H01B3/44
CPCC08K2201/014C08L27/06C08L2201/08C08L2203/202H01B3/443C08L23/0869C08K13/02C08K5/12C08K2003/265C08K3/346C08K3/2279C08K3/36C08K2003/222C08K2003/2296C08K2003/2227C08K2003/2248
Inventor 闫孝敏于友姬李国昌潘旭东吴震辰
Owner FUTONG GROUP CO LTD
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