Polyvinyl chloride mixture for wires and cables and preparation method thereof

A polyvinyl chloride, wire and cable technology, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of increased manufacturing costs and processing costs, and achieve low cost, simple preparation process, strong resistance to torsional deformation and twisting fracture Effect

Active Publication Date: 2012-11-14
深圳市金环宇电线电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve this problem, many enterprises at home and abroad will choose to use non-PVC resin materials such as thermoplastic elastomer (TPE) instead. Although its performance can meet the installation requirements in alpine regions, the manufacturing cost and processing cost will increase. greatly increase

Method used

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  • Polyvinyl chloride mixture for wires and cables and preparation method thereof
  • Polyvinyl chloride mixture for wires and cables and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A polyvinyl chloride mixture for cold-resistant wire and cable, each component is prepared according to the following mass proportions:

[0017]

[0018] The mass fraction of DOP in the plasticizer described in Example 1 is 69 parts, and the mass fraction of DOA is 19 parts.

[0019] Add the polyvinyl chloride resin SG-3, plasticizer, stabilizer Y-680, filler CCR, epoxy soybean oil, slip agent, and toner in the high-speed mixer and stir, stir evenly and After reaching 90°C±3°C, add nitrile rubber P83 (acrylonitrile 31%-35%) into the high-speed mixer for secondary stirring, and the time of secondary stirring is controlled at 50-80 seconds to prevent premature formation of nitrile rubber After stirring evenly, put the mixture into the cold mixer for stirring, and at the same time send it to the pre-heated granulator, control the extrusion temperature of the granulator at 140°C±3°C, after extrusion, pelletizing To obtain the required polyvinyl chloride mixture for wire...

Embodiment 2

[0022] The mass share of DOP in the plasticizer described in embodiment two is 50 parts, and the mass share of DOA is 15 parts; in the plasticizer described in embodiment three, the mass share of DOP is 10 parts, and the mass share of DOA is 10 parts. The mass share is 6 parts. In other embodiments, DOA wherein also can be replaced by other cold-resistant plasticizers, DOP also can be by any one in DINP, DIDP and TOTM or any several in DOP, DINP, DIDP and TOTM combination instead.

[0023] The polyvinyl chloride mixture of Example 1 has the following electrical properties and mechanical properties after testing:

[0024] 1. Electrical properties

[0025] 1. Volume resistivity:

[0026] ≥10 at 20°C 13 Ω.cm ≥10 at 70°C 10 Ω.cm

[0027] ≥10 when the maximum conductor temperature is 70°C during normal operation 10 Ω.cm

[0028] 2. Insulation resistance constant:

[0029] ≥36.7MΩ.km at 20°C

[0030] 0.037MΩ.km at the highest conductor temperature of 70°C during normal ope...

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PUM

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Abstract

The invention discloses a polyvinyl chloride mixture for wires and cables and a preparation method thereof. The mixture comprises 30-60 parts of polyvinyl chloride resin, 4-15 parts of nitrile-butadiene rubber, 17-60 parts of plasticizer, 0.5-3 parts of epoxy soybean oil, 5-20 parts of filler, 2-3 parts of stabilizer, 0.2-0.6 part of lubricant and 0.1-1 part of toner. The preparation method comprises the following steps: adding polyvinyl chloride resin, plasticizer, stabilizer, filler, epoxy soybean oil, lubricant and toner together into a high-speed mixer, evenly mixing to a certain temperature, adding nitrile-butadiene rubber into the high-speed mixer to carry out secondary mixing, evenly mixing, mixing in a cold mixer while sending the mixture into a preheated granulator, and extruding and granulating to obtain the required polyvinyl chloride mixture for wires and cables. The polyvinyl chloride mixture disclosed by the invention still has the characteristics of torsion resistance, high elastic resilience, friction resistance, torsional deformation resistance and strong torsional fracture performance at -40 DEG C, and also has the advantages of low cost and simple preparation technique.

Description

technical field [0001] The invention relates to the field of industrial polymer materials, in particular to an insulation and sheath material for wires and cables and a preparation method thereof. Background technique [0002] The application range of wire and cable is very wide, involving industries such as electric power, construction, communication, and manufacturing, and is closely related to various sectors of the national economy. Wires and cables are used in different environments or occasions, and their requirements are also different. Our country has a vast territory, and there is a large temperature difference between the north and the south in winter. The minimum temperature in Guangdong is above 0°C, while in Xinjiang, Inner Mongolia, and Northeast China, the minimum temperature is below minus 30°C. The wires and cables made of the original polyvinyl chloride mixture are not Suitable for installation in cold climates. This is because the insulation and sheath m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/02C08K13/02C08K5/1515C08K5/11C08K5/12C08K3/26H01B3/44H01B7/28
CPCY02A30/14
Inventor 郜帮朝王来祥
Owner 深圳市金环宇电线电缆有限公司
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