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A special color masterbatch for silane cross-linked insulation material and its preparation method

A technology of silane cross-linking and insulating materials, which is applied in the field of cable materials, can solve the problems of cable breakdown, less color masterbatch addition, easy moisture absorption, etc., and achieve the goals of solving breakdown problems, good processability, and ensuring uniformity Effect

Active Publication Date: 2018-03-02
JIANGSU DEWEI ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The following risks exist in adding existing color masterbatches: (1) After the color powder is prepared into the color masterbatch, it is easy to absorb moisture, which will cause the silane cable to form cross-linked blocks when it encounters water during the extrusion process, affecting the smoothness of the product, thereby affecting the overall performance of the cable; (2) During the manufacturing process of color masterbatch, the toner is easy to agglomerate, which will cause breakdown during the cable pressing process; (3) The amount of color masterbatch added is small, and the dispersion effect of single screw for cable extrusion is poor, which may easily cause uneven color of the cable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a special color masterbatch for silane crosslinking insulating material, and its raw material formula includes the following components in parts by weight:

[0027] 40 parts of carrier resin;

[0028] 20 parts of compatibilizer;

[0029] 10 parts of toner;

[0030] 10 parts of dehumidification filler;

[0031] 2 parts of auxiliary materials;

[0032] 0.5 part of antioxidant;

[0033] Among them, the carrier resin is made of PE resin, EVA resin and POE resin in a mass ratio of 2:1:1.5, the melt index of PE (polyethylene) resin is 2, and the melting index of EVA (ethylene-vinyl acetate copolymer) resin The index is 50, the melt index of POE (polyolefin elastomer) resin is 5; the compatibilizer is maleic anhydride grafted ethylene-octene copolymer, its melt index is 0.8, and the grafting rate of maleic anhydride is 1; the color The powder is halogen-free toner (K-LMAXS), and its temperature resistance is above 330°C; the dehumidification fille...

Embodiment 2

[0038] This embodiment provides a special color masterbatch for silane crosslinking insulating material, and its raw material formula includes the following components in parts by weight:

[0039] 80 parts of carrier resin;

[0040] 10 parts of compatibilizer;

[0041] 40 parts of toner;

[0042] 30 parts of dehumidification filler;

[0043] 10 parts of auxiliary materials;

[0044] Antioxidant 2 parts;

[0045] Among them, the carrier resin is made of PE resin, EVA resin and POE resin in a mass ratio of 3:1.5:1.5, the melt index of PE (polyethylene) resin is 2.5, and the melting index of EVA (ethylene-vinyl acetate copolymer) resin The index is 150, the melt index of POE (polyolefin elastomer) resin is 25; the compatibilizer is maleic anhydride grafted ethylene-octene copolymer, its melt index is 1.5, and the grafting rate of maleic anhydride is 1.5; the color The powder is halogen-free toner, as above; the dehumidifying filler is made of nano-calcium carbonate and calci...

Embodiment 3

[0050] This embodiment provides a special color masterbatch for silane crosslinking insulating material, and its raw material formula includes the following components in parts by weight:

[0051] 60 parts of carrier resin;

[0052] 15 parts of compatibilizer;

[0053] 30 parts of toner;

[0054] 20 parts of dehumidification filler;

[0055] 5 parts of auxiliary materials;

[0056] Antioxidant 1 part;

[0057]Among them, the carrier resin is made of PE resin, EVA resin and POE resin in a mass ratio of 3:1.5:1.5, the melt index of PE (polyethylene) resin is 2.2, and the melting index of EVA (ethylene-vinyl acetate copolymer) resin The index is 100, and the melt index of POE (polyolefin elastomer) resin is 20; the compatibilizer is maleic anhydride grafted ethylene-octene copolymer, its melt index is 1, and the grafting rate of maleic anhydride is 1.1; the color The powder is halogen-free toner, as above; the dehumidifying filler is made of nano-calcium carbonate and calciu...

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Abstract

The invention relates to a special master batch for a silane crosslinking insulation material. A raw material formula of the special master batch comprises the following components in parts by weight: 40-80 parts of carrier resin, 10-20 parts of a compatilizer, 10-40 parts of color powder, 10-30 parts of a dehumidifying filler, 2-10 parts of an auxiliary aid and 0.5-2 parts of an antioxidant, wherein the carrier resin is prepared by mixing PE resin with EVA resin and POE resin in a mass ratio of (2-3) to (1-1.5) to 1.5; the compatilizer is a maleic anhydride grafted ethylene-octylene copolymer; the dehumidifying filler is prepared by mixing nano calcium carbonate with calcium oxide in a mass ratio of (5-6) to (0.5-1); and the auxiliary aid is prepared by mixing grafted polyethylene wax with a rheological agent in a mass ratio of (1-1.5) to (0.3-0.8). The finally obtained master batch is very easily dispersed in an extrusion process and can be uniformly blended with a silane crosslinking material, so that the color uniformity of the product is guaranteed.

Description

technical field [0001] The invention belongs to the field of cable materials, and relates to a special color masterbatch for insulating materials, in particular to a special color masterbatch for silane crosslinking insulation materials and a preparation method thereof. Background technique [0002] Silane cross-linked insulating materials are mainly used in power cables of 10KV and below. During use, it is often necessary to prepare wires and cables of different colors. At present, a certain amount of color masterbatch is mainly used to meet the requirements. As is well known, the crosslinking conditions for silane crosslinking include water, temperature and catalyst. The following risks exist in adding existing color masterbatches: (1) After the color powder is prepared into the color masterbatch, it is easy to absorb moisture, which will cause the silane cable to form cross-linked blocks when it encounters water during the extrusion process, affecting the smoothness of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/08C08L51/06C08K13/02C08K3/26C08K3/22B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704C08K2201/011C08L23/06C08L2201/02C08L2205/035C08L2205/08C08L23/0853C08L23/0815C08L51/06C08K13/02C08K2003/265C08K2003/2206
Inventor 李小刚陈敏张丽本
Owner JIANGSU DEWEI ADVANCED MATERIALS