Halogen-free low-smoke flame-retardant crosslinked polyethylene material and preparation method thereof

A cross-linked polyethylene, low-smoke flame-retardant technology, applied in the field of flame-retardant materials, can solve problems such as harm, release a large amount of toxic and harmful gases, and be not environmentally friendly, achieve good flame-retardant effect, overcome the easy agglomeration of flame retardants, The effect of low smoke production

Pending Publication Date: 2021-04-06
WEIHAI HONGLIN ELECTRIC POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the flame-retardant polyethylene materials and PVC containing halogens are mainly on the market. Because they contain halogens, they are not environmentally friendly. After burning, a large amount of toxic and harmful gases will be released, causing great harm.

Method used

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  • Halogen-free low-smoke flame-retardant crosslinked polyethylene material and preparation method thereof
  • Halogen-free low-smoke flame-retardant crosslinked polyethylene material and preparation method thereof
  • Halogen-free low-smoke flame-retardant crosslinked polyethylene material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] In this example, the halogen-free low-smoke flame-retardant cross-linked polyethylene material and its preparation method, the raw materials are composed as follows in parts by mass:

[0031] 30 parts of metallocene linear low density polyethylene, 60 parts of linear low density polyethylene, 10 parts of maleic anhydride grafted polyethylene, 100 parts of flame retardant, 5 parts of lubricant, 2 parts of antioxidant, coupling agent 1- 2 parts, 10 parts of black masterbatch, 2 parts of cross-linking accelerator.

[0032] Among them, the above-mentioned flame retardant is 70 parts of aluminum hydroxide, 20 parts of mining magnesium hydroxide, and 10 parts of red phosphorus.

[0033] Wherein, the above-mentioned lubricant is 3 parts of silicone powder and 2 parts of PE wax.

[0034] Among them, the above-mentioned maleic anhydride-grafted polyethylene is commercially available, with a graft rate of about 0.92%, the brand name is MC218, and the manufacturer is Ningbo Nengz...

Embodiment 2

[0055] In this example, the halogen-free low-smoke flame-retardant cross-linked polyethylene material and its preparation method, the raw materials are composed as follows in parts by mass:

[0056] 25 parts of metallocene linear low density polyethylene, 60 parts of linear low density polyethylene, 15 parts of maleic anhydride grafted polyethylene, 90 parts of flame retardant, 5 parts of lubricant, 2 parts of antioxidant, 1.5 parts of coupling agent , 10 parts of black masterbatch, 3 parts of cross-linking accelerator.

[0057] Wherein, the above-mentioned flame retardant is 75 parts of magnesium hydroxide and 15 parts of red phosphorus.

[0058] Wherein, the above-mentioned lubricant is 5 parts of silicone powder.

[0059] Among them, the above-mentioned maleic anhydride-grafted polyethylene is commercially available, with a graft rate of about 0.92%, the brand name is MC218, and the manufacturer is Ningbo Nengzhiguang New Material Technology Co., Ltd.

[0060] Wherein, th...

Embodiment 3

[0080] In this example, the halogen-free low-smoke flame-retardant cross-linked polyethylene material and its preparation method, the raw materials are composed as follows in parts by mass:

[0081] 25 parts of metallocene linear low density polyethylene, 65 parts of linear low density polyethylene, 10 parts of maleic anhydride grafted polyethylene, 80 parts of flame retardant, 5 parts of lubricant, 2 parts of antioxidant, 1 part of coupling agent , 10 parts of black masterbatch, 2 parts of cross-linking accelerator.

[0082] Among them, the above-mentioned flame retardant is 65 parts of aluminum hydroxide and 15 parts of aluminum diethylphosphinate.

[0083] Wherein, the above-mentioned lubricant is 4 parts of silicone powder and 1 part of PE wax.

[0084] Among them, the above-mentioned maleic anhydride-grafted polyethylene is commercially available, with a graft rate of about 0.92%, the brand name is MC218, and the manufacturer is Ningbo Nengzhiguang New Material Technolog...

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Abstract

The invention provides a halogen-free low-smoke flame-retardant crosslinked polyethylene material and a preparation method thereof. The polyethylene material is prepared from the following raw materials in parts by weight: 25-35 parts of metallocene linear low-density polyethylene, 55-65 parts of linear low-density polyethylene, 10-15 parts of maleic anhydride grafted polyethylene, 80-100 parts of a flame retardant, 5 parts of a lubricant, 2 parts of an antioxidant, 1-2 parts of a coupling agent, 10 parts of black masterbatch and 2-3 parts of a cross-linking accelerator. According to the halogen-free low-smoke flame-retardant crosslinked polyethylene material provided by the invention, the processing technology is easier to control, and the production cost is reduced; and the defects that a flame retardant in an existing halogen-free flame-retardant cross-linked polyethylene material is prone to agglomeration, large in addition amount and poor in mechanical property are overcome, and the halogen-free flame-retardant cross-linked polyethylene material is good in flame-retardant effect, small in smoke generation amount, good in impact resistance and excellent in comprehensive mechanical property.

Description

technical field [0001] The patent of the present invention relates to the technical field of flame-retardant materials, in particular to a halogen-free low-smoke flame-retardant cross-linked polyethylene material and a preparation method thereof. Background technique [0002] Polyethylene is a commonly used thermoplastic with light weight, non-toxic and environmental protection, and excellent electrical insulation properties. It is widely used in the field of wires and cables. At present, the flame-retardant polyethylene materials and PVC containing halogens are mainly on the market. Because they contain halogens, they are not environmentally friendly. After burning, they will release a large amount of toxic and harmful gases, causing great harm. Therefore, it is necessary to develop a halogen-free low-smoke flame-retardant cross-linked polyethylene material to ensure that the material has good flame retardancy and excellent mechanical properties, low smoke generation, and g...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L51/06C08K13/02C08K3/22C08K3/02C08K5/5313B29C48/92B29B9/06
CPCC08L23/0815B29C48/92B29B9/06C08L2201/02C08L2201/22C08L2205/035B29C2948/92704B29C2948/9259C08K2003/2227C08K2003/2224C08K2003/026
Inventor 李其峰贾海峰于文广王鹏张士明王文霞
Owner WEIHAI HONGLIN ELECTRIC POWER TECH CO LTD
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