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Flame-retardant cable material and preparation method thereof

A technology of flame-retardant cable materials and fillers, applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problems of high production cost, large bending radius, complex process, etc., and increase heat resistance and weather resistance Good performance, increase impact strength, low temperature softness

Inactive Publication Date: 2019-12-13
天龙伟业线缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The special equipment required for magnesium oxide mineral fire-resistant insulated cables is complicated in process, low in efficiency, high in production cost, and very large in investment, and can only be used for low-voltage fire-resistant cables; the bending radius is large; the laying operation is very complicated
The mica tape type fire-resistant cable needs special wrapping equipment, multi-layer winding, cumbersome process, high production cost, and it is easy to be brittle and fall off after burning in a fire, so that the real fireproof effect cannot be achieved.

Method used

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  • Flame-retardant cable material and preparation method thereof
  • Flame-retardant cable material and preparation method thereof
  • Flame-retardant cable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Flame retardant cable material: 25g of low-density polyethylene, 15g of magnesium hydroxide, 3g of stearic acid, 1g of antioxidant CA, 11g of bis(2-ethylhexyl) phthalate, ethylene-propylene copolymer grafted maleic acid Anhydride copolymer 5g, calcium carbonate 2g.

[0027] The above-mentioned preparation method is as follows: Step (1): Take the above-mentioned raw materials, divide the ethylene-propylene copolymer grafted maleic anhydride copolymer into two parts, the first part is 3g, and the second part is 2g;

[0028] Step (2): low-density polyethylene and the first part of ethylene-propylene copolymer grafted maleic anhydride copolymer are added in the mixer and stirred at 250r / min for 10min;

[0029] Step (3): Add calcium carbonate, magnesium hydroxide, stearic acid, antioxidant CA, bis(2-ethylhexyl) phthalate and the second part of ethylene in the mixer in step (2) -Propylene copolymer grafted maleic anhydride copolymer was stirred at 370r / min for 10min to obtai...

Embodiment 2

[0032] Flame-retardant cable material: 30g of low-density polyethylene, 25g of magnesium hydroxide, 6g of stearic acid, 5 parts of antioxidant CA, 15 parts of bis(2-ethylhexyl) phthalate, grafted ethylene-propylene copolymer Maleic anhydride copolymer 10 parts, calcium carbonate 6g.

[0033] The above-mentioned preparation method is as follows: Step (1): Take the above-mentioned raw materials, divide the ethylene-propylene copolymer grafted maleic anhydride copolymer into two parts, the first part is 3g, and the second part is 2g;

[0034] Step (2): Add low-density polyethylene and the first part of ethylene-propylene copolymer graft maleic anhydride copolymerization into the mixer and stir for 10min at 250r / min;

[0035] Step (3): Add calcium carbonate, magnesium hydroxide, stearic acid, antioxidant CA, bis(2-ethylhexyl) phthalate and the second part of ethylene in the mixer in step (2) -Propylene copolymer grafted maleic anhydride copolymer was stirred at 370r / min for 10min...

Embodiment 3

[0038] Flame-retardant cable material: 27g of low-density polyethylene, 20g of magnesium hydroxide, 4g of stearic acid, 3 parts of antioxidant CA, 13 parts of bis(2-ethylhexyl) phthalate, grafted ethylene-propylene copolymer 7 parts of maleic anhydride copolymer, 4 g of calcium carbonate.

[0039] The above-mentioned preparation method is as follows: Step (1): Take the above-mentioned raw materials, divide the ethylene-propylene copolymer grafted maleic anhydride copolymer into two parts, the first part is 4.2g, and the second part is 2.8g;

[0040] Step (2): Add low-density polyethylene and the first part of ethylene-propylene copolymer graft maleic anhydride copolymerization into the mixer and stir for 10min at 250r / min;

[0041] Step (3): Add calcium carbonate, magnesium hydroxide, stearic acid, antioxidant CA, bis(2-ethylhexyl) phthalate and the second part of ethylene in the mixer in step (2) -Propylene copolymer grafted maleic anhydride copolymer was stirred at 370r / min...

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Abstract

The invention discloses a flame-retardant cable material which comprises the following components in parts by weight: 25-30 parts of polyolefin resin, 15-25 parts of a flame retardant, 3-6 parts of alubricant, 1-5 parts of an antioxidant, 11-15 parts of phthalic acid di(2-ethylhexyl) ester and 5-10 parts of a compatilizer. The cable material prepared by using a preparation method disclosed by theinvention has good effects of flame retardancy and fire resistance, high temperature resistance and electric insulation.

Description

technical field [0001] The invention relates to a flame-retardant cable material and a preparation method thereof. Background technique [0002] At present, wires and cables have the function of power transmission and information transmission, and play an important role in people's life and production. Designing and preparing low-smoke, low-toxic cable materials with excellent flame-retardant and insulating properties has become a hot spot in flame-retardant research today. [0003] At present, with the rapid development of economy and science and technology, people's quality of life has been significantly improved, and the protection of personal and property safety in fire is a major concern of people. Therefore, in high-rise buildings, hotels, public entertainment places, large supermarkets, hospitals, In densely populated areas such as stations, airports, subways, rail transit, coal mines, and public transportation facilities, it is necessary to maintain the normal opera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L51/06C08L83/04C08L51/00C08K13/02C08K13/04C08K5/526C08K3/34C08K7/26C08K3/22C08K5/09C08K5/12C08K3/26H01B3/44
CPCC08K2003/222C08K2003/2227C08K2003/265C08L23/06C08L23/12C08L2201/02C08L2201/08C08L2203/202C08L2205/035C08L2207/066H01B3/441C08L51/06C08K13/02C08K3/22C08K5/09C08K5/12C08K3/26C08L83/04C08L91/00C08L51/006C08K13/04C08K5/526C08K3/34C08K7/26
Inventor 张建波
Owner 天龙伟业线缆有限公司
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