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Method for preparing silane crosslinking polyethylene insulating material for 10 kV or below silver gray wires and cables through two-step method

A polyethylene insulation, wire and cable technology, applied in the direction of organic insulators, plastic/resin/wax insulators, etc., can solve the problems of large gaps, achieve high insulation resistance, reduce quality, improve environmental stress crack resistance and heat aging resistance performance effect

Inactive Publication Date: 2016-12-07
浙江太湖远大新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, in the industry, the temperature grade of 105°C and below can meet the requirements no matter whether XLPE, XLPVC or PVC is used. Above 150°C, the application of silicone rubber, fluoroplastics, polyimide and other varieties has also matured, but in the middle temperature grade (such as 125°C, 150°C) application development, there is a big gap with foreign countries

Method used

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  • Method for preparing silane crosslinking polyethylene insulating material for 10 kV or below silver gray wires and cables through two-step method
  • Method for preparing silane crosslinking polyethylene insulating material for 10 kV or below silver gray wires and cables through two-step method
  • Method for preparing silane crosslinking polyethylene insulating material for 10 kV or below silver gray wires and cables through two-step method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Silane cross-linked polyethylene insulating material for 10kV and below silver-gray wire and cable, which is prepared from the following components by weight percentage:

[0044]

[0045]

[0046] The two-step method for preparing silane cross-linked polyethylene insulating materials for 10kV and below silver-gray wires and cables is mainly composed of two parts, one is the preparation of catalyst masterbatch, and the other is the preparation of finished products.

[0047] 1. Preparation of catalyst masterbatch: The catalyst masterbatch accounts for 5% of the total material composition, and the specific formula is as follows:

[0048]

[0049] Stir the above materials in the mixer, first stir at low speed for 1 minute and then at high speed for 3 minutes, then release and pour into the hopper of the extruder (extruder temperature: 140-180°C), extrude through the twin-screw, and then pass through the cooling water tank for cooling , and then blown dry by a fan b...

Embodiment 2

[0059] Silane cross-linked polyethylene insulating material for 10kV and below silver-gray wire and cable, which is prepared from the following components by weight percentage:

[0060]

[0061]

[0062] The insulating material mentioned above was prepared by the two-step method of Example 1.

Embodiment 3

[0064] Silane cross-linked polyethylene insulating material for 10kV and below silver-gray wire and cable, which is prepared from the following components by weight percentage:

[0065]

[0066] A method for preparing silane cross-linked polyethylene insulating materials for 10kV and below silver-gray wires and cables in one step. It mainly consists of two parts, one is the preparation of catalyst masterbatch, and the other is the preparation of finished products.

[0067] 1. Preparation of catalyst masterbatch: The catalyst masterbatch accounts for 5% of the total material composition, and the specific formula is as follows:

[0068]

[0069] Stir the above materials in the mixer, first stir at low speed for 1 minute and then at high speed for 3 minutes, then release and pour into the hopper of the extruder (extruder temperature: 140-180°C), extrude through the twin-screw, and then pass through the cooling water tank for cooling , and then blown dry by a fan before cut...

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Abstract

The invention relates to the field of insulating materials, in particular to a silane crosslinking polyethylene insulating material for 10 kV or below silver gray wires and cables. A method for preparing the silane crosslinking polyethylene insulating material for the 10 kV or below silver gray wires and cables through a two-step method mainly comprises the two steps of catalyst master batch preparation and finished product preparation. The insulating material is prepared from, by weight, LLDPE-7042, LLDPE-8320, LDPE, EVA, PP, a silane coupling agent, a cross-linking agent DCP, an antioxidant 300, an antioxidant 1010, an antioxidant DLTP, an antioxidant 1024, organotin, fluororubber master batches, an ultraviolet light absorber and silver gray master batches. The insulating material is mainly used for insulating layers of the cables and mainly replaces a current PVC material, the insulating property is superior to that of PVC, PVC can emit toxic and harmful gases when the wires fire due to aging and the like, but the silane insulating material is poisonless and harmless.

Description

technical field [0001] The invention relates to the field of insulating materials, in particular to a silane cross-linked polyethylene insulating material for silver-gray wires and cables of 10kV and below. Background technique [0002] The types of polyolefins used in the cable industry mainly include PE, PP, EVA and EEA, etc. Among them, the relatively large amount and long application history are mainly PE, which include HDPE, MDPE, LDPE, LLDPE and cross-linked XLPE. Their application Needless to say. The current application and development trends of polyolefins in the industry mainly focus on the following aspects: [0003] (1) Serialization and perfection of halogen-free and low-smoke materials [0004] Halogen-free, low-smoke, flame-retardant cable materials have been developing rapidly in recent years, and thermoplastic materials that meet the requirements of the IEC92-359 standard have been more and more widely used. With the requirements of cables for oil platfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L23/12C08L27/12C08K5/54C08K5/14C08K5/57C08J3/22H01B3/44
CPCC08L23/0815C08J3/226C08J2323/08C08J2423/08C08L2201/08C08L2203/202C08L2205/025C08L2205/035H01B3/441C08L23/06C08L23/12C08L27/12C08K5/54C08K5/14C08K5/57
Inventor 赵勇俞丽琴李顺利蔡煜明郑颜
Owner 浙江太湖远大新材料股份有限公司
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