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High-resistivity flame-retardant polyvinyl chloride composition for cable material

A technology of flame-retardant polyvinyl chloride and high resistivity, applied in circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problems of poor thermal stability of materials, poor weather resistance, accelerated aging process, etc. Achieve high insulation performance, excellent flame retardancy, and improve the effect of flame retardancy

Active Publication Date: 2020-02-07
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, calcined clay contains a large amount of iron ions, which makes the weather resistance of the material worse, and iron ions can act as a catalyst for thermal aging of the material, thereby accelerating the aging process and making the thermal stability of the material worse

Method used

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  • High-resistivity flame-retardant polyvinyl chloride composition for cable material
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  • High-resistivity flame-retardant polyvinyl chloride composition for cable material

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the examples, but it does not limit the implementation of the present invention.

[0024] The preparation method of embodiment and comparative example is as follows:

[0025] (1) Weigh according to the ratio of raw materials, and then put the weighed materials and additives into the high-low mixing mixer for low-speed stirring. The materials can be added at the same time or sequentially, preferably at the same time. All plasticizers were added in three full additions during stirring. After all the plasticizers are added, high-speed stirring is carried out for 3-6 minutes, and the material is released into the low-speed cold high-speed stirring, and the material is discharged when the temperature is about 45°C.

[0026] (2) Extrude and granulate the mixed materials on a parallel twin-screw extruder, and control the temperature of each zone of the extruder to 100-140°C. Cut into pellets, weigh and...

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Abstract

The invention relates to a high-resistivity flame-retardant polyvinyl chloride composition for a cable material, and belongs to the technical field of polyvinyl chloride modification. The high-resistivity flame-retardant PVC cable material composition provided by the invention includes the following raw materials in parts by weight: 100 parts of PVC resin, 30-50 parts of a special composite plasticizer, 15-35 parts of a flame-retardant plasticizer, 5-10 parts of powdered chlorinated rubber, 3-10 parts of a calcium zinc stabilizer, 0.5-1.2 parts of a composite antioxidant, 0.5-2 parts of a composite lubricant, and 0-5 parts of active calcium carbonate, wherein the special composite plasticizer is a mixture of dipropylene glycol dibenzoate and di(tridecyl)phthalate. The cable material prepared by using the high-resistivity flame-retardant polyvinyl chloride cable material composition provided by the invention has a high volume resistivity, and excellent flame retardancy, resistance to precipitation, and aging resistance.

Description

technical field [0001] The invention relates to a high-resistivity flame-retardant polyvinyl chloride cable material composition, which belongs to the technical field of polyvinyl chloride modification. Background technique [0002] In recent years, with the development of social urbanization, technology and humanization, and the rapid development of the PVC industry, PVC materials are getting closer to people's lives. As an important supporting industry for my country's economic construction, the PVC cable material industry has made great progress. big development. PVC cable materials, especially insulating materials, require materials to have high volume resistivity. Since PVC cable materials need to add a large amount of plasticizer, the addition of plasticizer greatly reduces the volume resistivity and flame retardancy of the material. In order to improve the resistivity , Calcined clay is often added to the cable material. However, calcined clay contains a large amount...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L15/02C08K13/02C08K5/103C08K5/12C08K3/26H01B3/44
CPCC08K2003/265C08L27/06C08L2201/02C08L2201/08C08L2203/202H01B3/443C08L15/02C08K13/02C08K5/103C08K5/12C08K3/26
Inventor 刘容德王晶张新华刘浩王晓敏王秀丽李静裴小静高磊
Owner CHINA PETROLEUM & CHEM CORP
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