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Two-step process silane crosslinking low-smoke halogen-free flame-retarding polyolefin cable material and manufacturing method of same

The technology of polyolefin cable material and silane method is applied in the field of wire and cable, which can solve the problems of uncontinuous preparation process of wire and cable, prone to pre-crosslinking reaction, decreased resin fluidity, etc., and achieves the problems of improving processability and smooth surface of wire. , easy to control, smooth extrusion effect

Inactive Publication Date: 2017-04-26
上海新上化高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the second step of preparation, the silane-grafted polyethylene material A and the inorganic flame retardant are blended and granulated, and the fluidity of the resin after silane grafting decreases. It is difficult to produce, and when co-extruded with a high proportion of flame retardant containing crystal water, pre-crosslinking reaction is prone to occur, so that the preparation process of wire and cable cannot be continuous and the smoothness of the wire surface is poor

Method used

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  • Two-step process silane crosslinking low-smoke halogen-free flame-retarding polyolefin cable material and manufacturing method of same
  • Two-step process silane crosslinking low-smoke halogen-free flame-retarding polyolefin cable material and manufacturing method of same
  • Two-step process silane crosslinking low-smoke halogen-free flame-retarding polyolefin cable material and manufacturing method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] formula:

[0040] The mass ratio of silane-grafted polyethylene material A to low-smoke, halogen-free, flame-retardant polyolefin flame-retardant masterbatch containing cross-linking catalyst material B is: 15:85;

[0041] The formula and preparation method of A material:

[0042] formula:

[0043] The silane-grafted polyethylene A material includes the following components in parts by weight:

[0044] 100 parts of polyethylene resin, 1.6 parts of compounded silane, 1.0 parts of antioxidant.

[0045] The polyethylene resin is linear low density polyethylene, and its melt index is 2g / min.

[0046] Described complex silane is made up of the component of following mass fraction:

[0047] 100 parts of silane coupling agent, 2.7 parts of initiator;

[0048] Described silane coupling agent is vinyltrimethoxysilane;

[0049] Described initiator is dicumyl peroxide;

[0050] The antioxidant is tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol es...

Embodiment 2

[0079] The mass ratio of silane-grafted polyethylene material A to low-smoke, halogen-free flame-retardant polyolefin flame-retardant masterbatch containing cross-linking catalyst material B is: 12:88;

[0080] The formula of material A:

[0081] Formula: parts by weight

[0082] 100 parts of polyethylene resin, 2.0 parts of compound silane, 2.0 parts of antioxidant;

[0083] Other and preparation method are with embodiment 1;

[0084] Crosslinking catalyst B material formula: parts by weight:

[0085] 100 parts of polyethylene resin, 3.0 parts of catalyst; 3.0 parts of antioxidant; 2.0 parts of anti-copper agent;

[0086] Other and preparation method are with embodiment 1;

[0087] The low-smoke, halogen-free, flame-retardant polyolefin flame-retardant masterbatch containing the crosslinking catalyst material B includes the following components in parts by weight:

[0088]

[0089]

[0090] Described polyethylene resin is a high fluidity linear low density polyethy...

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Abstract

The invention discloses a two-step process silane crosslinking low-smoke halogen-free flame-retarding polyolefin cable material and a manufacturing method of same. The cable material is composed of a silane grafted polyethylene material A and a low-smoke halogen-free flame-retarding polyolefin master batch containing a crosslinking catalyst material B, wherein the mass ratio of the silane grafted polyethylene material A to the low-smoke halogen-free flame-retarding polyolefin master batch containing the crosslinking catalyst material B is 12-25:88-75. The manufacturing method is simple, has low energy consumption and is easy to control. The cable material has good stability and high resin flowability and can be extruded smoothly during pay-off. The preparation process of an electric wire cable is free of pre-crosslinking, so that continuous pay-off is allowed and the cable has high surface smooth degree. The manufacturing method improves processability and surface smooth degree during the pay-off processing of the electric wire cable.

Description

technical field [0001] The invention belongs to the field of wires and cables, and relates to a two-step silane halogen-free flame-retardant cross-linked polyolefin cable material and a preparation method. Background technique [0002] Polyethylene resin has good mechanical properties, insulation, low temperature resistance and processability, and is widely used in the field of wire and cable. However, due to its low temperature, poor resistance to environmental stress cracking and low oxygen index (LOI=18%), it is easy to burn, which greatly limits its application range. [0003] The cross-linking modification technology of polyethylene wire and cable improves its service temperature and environmental stress cracking resistance. There are three main methods of polyethylene cross-linking, namely peroxide chemical cross-linking, silane cross-linking and radiation cross-linking. Law. Metal Hydroxide Aluminum Hydroxide (Al(OH) 3 ), magnesium hydroxide (Mg(OH) 2 ) has good l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/06C08K13/02C08K3/22C08F255/02C08F230/08
CPCC08F255/02C08L23/0815C08L2201/02C08L2201/22C08L2203/202C08L2205/025C08L2205/035C08L2312/08C08F230/08C08L51/06C08K13/02C08K2003/2227C08K2003/2224
Inventor 邓锋徐永卫唐艳芳徐晓辉嵇建忠
Owner 上海新上化高分子材料有限公司
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