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PVC composite insulating material, electric wire and its preparation method and application

A composite insulation and wire technology, applied in insulators, organic insulators, plastic/resin/wax insulators, etc., can solve problems such as poor heat resistance and thermal aging performance.

Active Publication Date: 2021-06-08
SHANGHAI FUERXIN CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to overcome the defects of poor overheating resistance and non-standard thermal aging performance of thermoplastic 125°C PVC materials used in the field of wires and cables in the prior art, thus providing a PVC composite insulating material, Electric wire and its preparation method and application

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  • PVC composite insulating material, electric wire and its preparation method and application
  • PVC composite insulating material, electric wire and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0041]The consumption of each component in embodiment 1 is as shown in table 1. Among them, the degree of polymerization of the PVC resin is 1800, the plasticizer is TINTM, the crosslinking sensitizer is TMPTA, the calcium zinc stabilizer is Bear brand BP MC 8890KA, and the antioxidant is 1010.

[0042] 1. Preparation of PVC composite insulation material:

[0043] After mixing the plasticizer and the cross-linking sensitizer uniformly for 15 minutes, the mixture A was obtained, and then kept stirring for later use; after mixing the PVC resin and the mixture A uniformly for 1 minute, and then adding the remaining raw materials for 4 minutes, the mixture was obtained;

[0044] Put the mixture directly into the twin-screw compounder for extrusion and granulation. Wherein, the equipment adopted during extrusion granulation is a conventional twin-screw feeder in the field; in the twin-screw feeder, the diameter of the screw is 75 mm, and the length-to-diameter ratio is 40:1; the s...

Embodiment 2

[0049] The consumption of each component in embodiment 2 is as shown in table 1. Among them, the degree of polymerization of the PVC resin is 2500, the plasticizer is triisodecyl trimellitate, the crosslinking sensitizer is TMPTMA, the calcium zinc stabilizer is Bear brand BP MC 8890KA, and the antioxidant is 1076. 1, the preparation of PVC composite insulating material:

[0050] Mix the plasticizer and the cross-linking sensitizer uniformly for 10 minutes to obtain the mixture A, and then keep stirring for future use; mix the PVC resin and the mixture A uniformly for 1 minute, and then add the remaining raw materials for 8 minutes to obtain the mixture;

[0051] Just put the mixture directly into the twin-screw compounder for extrusion and compounding. Wherein, the equipment adopted during extrusion granulation is a conventional twin-screw feeder in the field; in the twin-screw feeder, the diameter of the screw is 75 mm, and the length-to-diameter ratio is 40:1; the speed of...

Embodiment 3

[0056] The consumption of each component in embodiment 3 is as shown in table 1. Wherein, the polymerization degree of PVC resin is 2500, and plasticizer is trimellitate tri(n-octyldecyl) ester, and crosslinking sensitizer is TMPTA, and calcium zinc stabilizer is Bear brand BP MC 8890KA, and antioxidant is 1076.

[0057] 1. Preparation of PVC composite insulation material:

[0058] Mix the plasticizer and cross-linking sensitizer uniformly for 18 minutes to obtain mixture A, and keep stirring thereafter for future use; mix the PVC resin and mixture A uniformly for 1 minute, and then add the remaining raw materials for 6 minutes to obtain the mixture;

[0059] Just put the mixture directly into the twin-screw compounder for extrusion and compounding. Wherein, the equipment adopted during extrusion granulation is a conventional twin-screw feeder in the field; in the twin-screw feeder, the diameter of the screw is 75 mm, and the length-to-diameter ratio is 40:1; the speed of th...

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Abstract

The invention discloses a PVC composite insulating material, an electric wire, a preparation method and an application thereof. Raw material is made up of the component of following parts by weight: 45-60 parts of trimellitic acid plasticizer, 8-12 parts of cross-linking sensitizer, 100 parts of PVC resin, 8-16 parts of calcium zinc stabilizer, 10 parts -30 parts of calcium carbonate and 0.5-2 parts of antioxidant; the preparation method comprises the following steps: ① mixing the plasticizer and the cross-linking sensitizer in advance to obtain the mixture A; ② mixing the mixture A with other raw materials to obtain Mixture B; extrusion granulation is sufficient. The preparation method of the present invention is simple in operation, strong in feasibility, low in cost, low in price, good in surface printability, low in radiation dose, high in radiation crosslinking production efficiency, and good in process extrusion performance. The finished wire has good overheat resistance, heat aging performance meets the requirements, and the short-circuit temperature is improved, which improves the operation safety of the wire and cable.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a PVC composite insulating material, an electric wire and a preparation method and application thereof. Background technique [0002] The working temperature of automotive wires is at least 30°C higher than the ambient temperature. Usually, the rated heat-resistant temperature of the wires used near the engine in the engine compartment is above 125°C. The continuous working time of the wire at the rated working temperature is not less than 3000 hours, and it is guaranteed that the insulating material maintains the necessary mechanical properties during the life of the vehicle. Heat-resistant wires have a greater ampacity and are safer. Automotive wires with a rated operating temperature of 125°C generally use cross-linked polyolefin wires, and thermoplastic polyvinyl chloride (PVC) materials are also used at present. [0003] Compared with 125°C cross-linked polyole...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K5/134C08K5/12C08J3/24H01B3/44B29C48/92
CPCB29C48/92B29C2948/92704C08J3/24C08J2327/06C08K5/12C08K5/1345C08L27/06C08L2201/08C08L2203/202C08L2312/06H01B3/443
Inventor 王僧山夏永恒吴迪张云峰李庆森
Owner SHANGHAI FUERXIN CABLE
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