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Two-step preparation method of insulation material for silver-gray aerial insulated cables

An overhead insulated cable, silver-gray technology, applied in the direction of organic insulators, plastic/resin/wax insulators, etc., can solve the problems of large gaps, achieve high insulation resistance, improve environmental stress crack resistance and heat aging resistance, and maintain The effect of electrical properties

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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  • Two-step preparation method of insulation material for silver-gray aerial insulated cables
  • Two-step preparation method of insulation material for silver-gray aerial insulated cables
  • Two-step preparation method of insulation material for silver-gray aerial insulated cables

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Insulation material for silver-gray overhead insulated cables, the insulation material is prepared from the following components by weight percentage:

[0041]

[0042] The two-step method for preparing insulating materials for silver-gray overhead insulated cables mainly consists of two parts, one is the preparation of catalyst masterbatch, and the other is the preparation of finished products.

[0043] 1) Preparation of catalyst masterbatch: catalyst masterbatch is LDPE, organotin, antioxidant 1010, antioxidant DLTP, fluororubber masterbatch, silver gray masterbatch and ultraviolet absorber;

[0044] 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. After being blown dry by a fan, the pellets are cut into pellets. The pellets are dried in a drying tower at 80°C for more than 2 hours, and then packed in vacuum aluminum-plastic bags for temporary sto...

Embodiment 2

[0055] Insulation material for silver-gray overhead insulated cables, the insulation material is prepared from the following components by weight percentage:

[0056]

[0057] The insulating material mentioned above was prepared by the two-step method of Example 1.

Embodiment 3

[0059] Insulation material for silver-gray overhead insulated cables, the insulation material is prepared from the following components by weight percentage:

[0060]

[0061]

[0062] The invention discloses a method for preparing an insulating material for silver-gray aerial insulated 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.

[0063] 1) Preparation of catalyst masterbatch: catalyst masterbatch is LDPE, organotin, antioxidant 1010, antioxidant DLTP, fluororubber masterbatch, silver gray masterbatch and ultraviolet absorber;

[0064] 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. After being blown dry by a fan, the pellets are cut into pellets. The pellets are dried in a drying tower at 80°C for more than 2 hours, and then packed in vacu...

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Abstract

The invention relates to the field of insulation materials, and especially relates to an insulation material for silver-gray aerial insulated cables. A two-step preparation method of the insulation material mainly comprises two steps: step one, preparing catalyst master batch, and step two, preparing finished products. The insulation material is prepared from the following components in percentage by weight: LLDPE-7042, LLDPE-8320, LDPE, a silane coupling agent, a crosslinking agent DCP, an antioxidant 300, an antioxidant 1010, an antioxidant DLTP, organic tin, fluorine rubber master batch, silver-grey master batch, and a UV absorbent. The provided insulation material is used to produce aerial insulated cables for power transmission, the insulation performance of the insulation material is better than that of PVC; when a wire is burned due to aging, PVC will give off toxic and harmful gas, while the silane insulation material is nontoxic and harmless.

Description

technical field [0001] The invention relates to the field of insulating materials, in particular to insulating materials for silver-gray aerial insulated cables. 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 platforms, nuclear power plants, ships and other har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L27/12C08K5/14C08K5/57C08K5/54H01B3/44C08J3/22
CPCC08L23/0815C08J3/226C08J2323/08C08J2423/06C08L2201/08C08L2203/202C08L2205/025C08L2205/035C08L2207/066H01B3/441
Inventor 赵勇李顺利俞丽琴蔡煜明郑颜
Owner 浙江太湖远大新材料股份有限公司
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