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Method for preparing silane crosslinked polyethylene insulating material for black electric wires and cables by two-step method

A polyethylene insulation, wire and cable technology, applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc., can solve the problems of large gaps, achieve high insulation resistance, improve mechanical properties, and good thermal denaturation effects

Inactive Publication Date: 2016-11-09
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 crosslinked polyethylene insulating material for black electric wires and cables by two-step method
  • Method for preparing silane crosslinked polyethylene insulating material for black electric wires and cables by two-step method
  • Method for preparing silane crosslinked polyethylene insulating material for black electric wires and cables by two-step method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A kind of silane cross-linked polyethylene insulating material for black electric wire and cable, this insulating material is prepared by the following components by weight percentage:

[0045]

[0046]

[0047] and catalyst masterbatch;

[0048] Described catalyst masterbatch is made of following component:

[0049]

[0050] The method for preparing a silane cross-linked polyethylene insulating material for black electric wires and cables by a two-step method is mainly composed of two parts, one is the preparation of the catalyst masterbatch, and the other is the preparation of the finished product.

[0051] 1. Catalyst masterbatch preparation:

[0052] Stir the above materials in a mixer, stirring at a low speed for 1 minute and then stirring at a high speed for 3 minutes, then release it and pour it 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 , a...

Embodiment 2

[0062] A kind of silane cross-linked polyethylene insulating material for black electric wire and cable, this insulating material is prepared by the following components by weight percentage:

[0063]

[0064] and catalyst masterbatch;

[0065] Described catalyst masterbatch is made of following component:

[0066]

[0067] The insulating material mentioned above was prepared by the two-step method of Example 1.

Embodiment 3

[0069] A kind of silane cross-linked polyethylene insulating material for black electric wire and cable, this insulating material is prepared by the following components by weight percentage:

[0070]

[0071] and catalyst masterbatch;

[0072] Described catalyst masterbatch is made of following component:

[0073]

[0074] The method for preparing the silane cross-linked polyethylene insulating material for black wire and cable by one-step method is mainly composed of two parts, one is the preparation of the catalyst masterbatch, and the other is the preparation of the finished product.

[0075] 1) Catalyst masterbatch preparation: Stir the above catalyst masterbatch materials in a mixer, first stir at a low speed for 1 minute, then stir at a high speed for 3 minutes, then pour them into the hopper of the extruder, the temperature of the extruder: 140-180°C, After the screw is extruded, it is cooled in a cooling water tank, and then dried by a fan before being pelletiz...

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PUM

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Abstract

The invention relates to the field of insulating materials, in particular to a silane crosslinked polyethylene insulating material for black electric wires and cables. The method for preparing the silane crosslinked polyethylene insulating material for the black electric wires and cables by a two-step method mainly consists of two parts, namely preparation of a catalyst master batch and preparation of a finished product. The insulating material is prepared from the following components: LLDPE-7042, LDPE, a silane coupling agent, a cross-linking agent DCP, an antioxidant 300 and the catalyst master batch; and the catalyst master batch is prepared from the following components: LLDPE-7042, LLDPE-8320, PP, an antioxidant 1010, an antioxidant DLTP, an antioxidant 1024, organic tin, a fluororubber master batch and a black master batch. The material is mainly used for insulating layers of the cables so as to replace an existing mainly used PVC material, the insulating property of the material is superior to that of the PVC, and hazardous gas can be emitted when the PVC is ignited caused by aging of electric wires, but the silane insulating material is non-toxic 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 black wires and 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...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L23/12C08K5/00C08K5/54C08J3/22H01B3/44
CPCC08L23/06C08J3/226C08J2323/06C08J2423/08C08L2201/08C08L2203/202C08L2205/025C08L2205/035C08L2207/066C08L2312/08H01B3/441C08L23/0815C08L23/12C08K5/00C08K5/54
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