Low-smoke halogen-free polyolefin cable material capable of being ceramized at high temperature and preparation method of low-smoke halogen-free polyolefin cable material

A polyolefin cable material and ceramicization technology, applied in circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problems of high cost of refractory materials, limited application, complex processing and production processes, etc., to achieve high hardness, overall The effect of good fastening and good temperature resistance

Pending Publication Date: 2021-11-09
SHANGHAI KAIBO SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production process of ceramic silicone rubber needs to involve the vulcanization of silicone rubber, and at the same time requires high-temperature flow channel equipment to assist in the completion. Compared with the direct plasticization process of polyolefin resin, the processing and production process is complicated and too many processes are inevitable. Increase the start-up cost and labor cost of the product. At the same time, the market price of silicone rubber raw materials is generally higher than the market price of raw materials such as linear low-density polyethylene, polyolefin elastomer, acetic acid-vinyl acetate involved in the patent of the present invention. Various factors lead to The high cost of vitrified silicone rubber refractories limits its wider application

Method used

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  • Low-smoke halogen-free polyolefin cable material capable of being ceramized at high temperature and preparation method of low-smoke halogen-free polyolefin cable material
  • Low-smoke halogen-free polyolefin cable material capable of being ceramized at high temperature and preparation method of low-smoke halogen-free polyolefin cable material
  • Low-smoke halogen-free polyolefin cable material capable of being ceramized at high temperature and preparation method of low-smoke halogen-free polyolefin cable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0040]A high-temperature ceramizable low-smoke halogen-free polyolefin cable material is composed of the following raw materials in parts by weight: 20 parts by weight of polyethylene resin, 20 parts by weight of polyolefin elastomer, 10 parts by weight of polyethylene compatibilizer, low-temperature synthetic 20 parts by weight of ceramic additives, 10 parts by weight of medium-temperature ceramic-forming additives, 20 parts by weight of high-temperature ceramic-forming additives, 50 parts by weight of inorganic powder, and 1 part by weight of antioxidant. 1 part by weight of lubricant.

[0041] Use torque rheometer for melt plasticization, plasticizing temperature is 160°C, use plate fluidizer for tableting sample preparation, tableting temperature is 160°C, hold pressure for 10 minutes, pressurize for 5 minutes, cool for 5 minutes

Embodiment example 2

[0043] A high-temperature ceramizable low-smoke halogen-free polyolefin cable material is composed of the following raw materials in parts by weight: 15 parts by weight of polyethylene resin, 20 parts by weight of polyolefin elastomer, 20 parts by weight of polyethylene compatibilizer, low-temperature synthetic 15 parts by weight of ceramic additive, 5 parts by weight of medium-temperature ceramic-forming additive, 30 parts by weight of high-temperature ceramic-forming additive, 55 parts by weight of inorganic powder, and 1 part by weight of antioxidant. 1 part by weight of lubricant.

[0044] Use torque rheometer for melt plasticization, plasticizing temperature is 160°C, use plate fluidizer for tableting sample preparation, tableting temperature is 160°C, hold pressure for 10 minutes, pressurize for 5 minutes, cool for 5 minutes

Embodiment example 3

[0046] A high-temperature ceramizable low-smoke halogen-free polyolefin cable material is composed of the following raw materials in parts by weight: 10 parts by weight of polyethylene resin, 30 parts by weight of polyolefin elastomer, 15 parts by weight of polyethylene compatibilizer, low-temperature synthetic 15 parts by weight of ceramic auxiliary agent, 10 parts by weight of medium-temperature porcelain-forming auxiliary agent, 25 parts by weight of high-temperature porcelain-forming auxiliary agent, 55 parts by weight of inorganic powder, and 1 part by weight of antioxidant. 1 part by weight of lubricant.

[0047] Melting plasticization was carried out by using a torque rheometer, the plasticizing temperature was 160°C, and the flat plate fluidizer was used for tableting sample preparation.

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PUM

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Abstract

The invention discloses a low-smoke halogen-free polyolefin cable material capable of being vitrified at high temperature, which is prepared from the following raw materials in parts by weight: polyolefin resin, a compatilizer, a low-temperature vitrifying auxiliary agent, a medium-temperature vitrifying auxiliary agent, a high-temperature vitrifying auxiliary agent, inorganic mineral soil powder, an antioxidant and a lubricant. And the low-smoke halogen-free polyolefin cable material has the advantages of rapid ceramization speed, and high hardness and better shape maintenance of the ceramic layer after ceramization .

Description

technical field [0001] The invention belongs to the field of cable materials, and in particular relates to a high-temperature ceramizable low-smoke halogen-free polyolefin cable material, and also relates to a preparation method of the high-temperature ceramizable low-smoke halogen-free polyolefin cable material. Background technique [0002] According to incomplete statistics, the proportion of fires caused by electricity has reached 30%, which has attracted great attention from the country, and has also put forward higher requirements for the flame retardancy of wires and cables. At present, the existing fire-resistant cables on the market mainly include two categories: mica tape-wrapped insulated cables and magnesium oxide mineral-filled insulated cables. The applications of the two types of cables are limited due to their respective obvious defects. Mica tape-wrapped cables have a production speed Slow, after fire, a carbon layer that conducts water will be formed, and t...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/00C08K3/01C08K3/013H01B3/44
CPCC08L23/06C08L23/00H01B3/441C08L2201/22C08L2201/08C08L2203/202C08K3/01C08K3/013
Inventor 蔺兴清段春来王德才沈长勇崔德刚胡婧慧
Owner SHANGHAI KAIBO SPECIAL CABLE FACTORY
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