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Thermoplastic polypropylene cable insulating material and preparation method thereof

A cable insulation and polypropylene technology is applied in the field of thermoplastic polypropylene cable insulation material and its preparation.

Pending Publication Date: 2020-08-14
江苏瑞文新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polypropylene material has a high melting point and excellent electrical insulation properties. However, polypropylene is brittle at room temperature, which makes it difficult to use as a cable insulation material (He Jinliang, Peng Lin, Zhou Yao. Research progress on environmentally friendly high-voltage DC cable insulation materials [J]. High Voltage Technology, 2017,043(002):337-343.)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add 25 parts of LDPE and 25 parts of LLDPE into the torque rheometer, raise the temperature to 120°C, stir at 40rpm for 30min, keep the temperature at 120°C during stirring, and obtain the mixed material;

[0024] (2) Raise the temperature of the torque rheometer to 150°C, add 50 parts of pp to the mixed material in step (1), stir at 40 rpm for 30 minutes, keep the temperature at 150°C during stirring, and obtain thermoplasticity after stirring Polypropylene cable insulation.

Embodiment 2

[0026] (1) Add 22 parts of LDPE and 22 parts of LLDPE into the torque rheometer, raise the temperature to 120°C, stir at 40rpm for 30min, keep the temperature at 120°C during stirring, and obtain the mixed material;

[0027] (2) Raise the temperature of the torque rheometer to 150°C, add 56 parts of pp to the mixed material in step (1), stir at 40 rpm for 30 minutes, keep the temperature at 150°C during stirring, and obtain thermoplasticity after stirring Polypropylene cable insulation.

Embodiment 3

[0029] (1) Add 20 parts of LDPE and 20 parts of LLDPE into the torque rheometer, raise the temperature to 120°C, stir at 40rpm for 30min, keep the temperature at 120°C during stirring, and obtain the mixed material;

[0030] (2) Raise the temperature of the torque rheometer to 150°C, add 60 parts of pp to the mixed material in step (1), stir at 40 rpm for 30 minutes, keep the temperature at 150°C during stirring, and obtain thermoplasticity after stirring Polypropylene cable insulation.

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PUM

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Abstract

The invention relates to the technical field of insulating materials, in particular to a thermoplastic polypropylene cable insulating material and a preparation method thereof. The thermoplastic polypropylene material has high brittleness at room temperature so that the material is difficult to use as a cable insulating material; to solve this problem, the invention provides the thermoplastic polypropylene cable insulation material comprising, by weight, 50-60 parts of PP, 20-25 parts of LDPE and 20-25 parts of LLDPE. According to the invention, two polyethylene materials which are the LDPE and the LLDPE are added into a polypropylene matrix, so that the room-temperature brittleness of the polypropylene insulating material can be greatly improved, the application range of the polypropylenecable insulating material is greatly expanded, and the polypropylene cable insulating material has a good development prospect.

Description

technical field [0001] The invention relates to the technical field of insulating materials, in particular to a thermoplastic polypropylene cable insulating material and a preparation method thereof. Background technique [0002] At present, the most commonly used insulation material for DC plastic cables is cross-linked polyethylene. This material not only maintains the good electrical insulation properties of polyethylene, but also enhances the heat resistance of polyethylene. The cross-linking process also makes the ethylene molecules form a chain structure Transformed into a network structure, the mechanical properties of polyethylene at high temperatures have been greatly improved. However, the cross-linking process makes polyethylene change from a thermoplastic material to a thermosetting material, so it cannot be directly recycled after the cable life expires, and it does not have the characteristics of green environmental protection, and a large amount of waste XLPE ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08L23/08H01B3/44
CPCC08L23/12H01B3/441C08L2203/202C08L2205/02C08L2205/03C08L2207/066C08L23/06C08L23/0815
Inventor 姜伟灿张伟超
Owner 江苏瑞文新材料科技有限公司
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