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Method for preparing silver gray silane crosslinked polyethylene insulating material for wires and cables by one-step process

A polyethylene insulation, wire and cable technology, applied in insulators, organic insulators, plastic/resin/wax insulators, etc., can solve problems such as large gaps, achieve high insulation resistance, reduce weight, and reduce cold flow.

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 silver gray silane crosslinked polyethylene insulating material for wires and cables by one-step process
  • Method for preparing silver gray silane crosslinked polyethylene insulating material for wires and cables by one-step process
  • Method for preparing silver gray silane crosslinked polyethylene insulating material for wires and cables by one-step process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A silane cross-linked polyethylene insulating material for silver-gray wire and cable, which is prepared from the following components by weight percentage:

[0045]

[0046] and catalyst masterbatch;

[0047] Described catalyst masterbatch is made of following component:

[0048]

[0049] The two-step method for preparing the silane cross-linked polyethylene insulating material for silver-gray wire and cable mainly consists of two parts, one is the preparation of the catalyst masterbatch, and the other is the preparation of the finished product.

[0050] 1. Catalyst masterbatch preparation:

[0051] 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 cutting into pellets. The pellets are d...

Embodiment 2

[0061] A silane cross-linked polyethylene insulating material for silver-gray wire and cable, which is prepared from the following components by weight percentage:

[0062]

[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 silane cross-linked polyethylene insulating material for silver-gray wire and cable, which is prepared from the following components by weight percentage:

[0070]

[0071] and catalyst masterbatch;

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

[0073]

[0074]

[0075] The method for preparing the silane cross-linked polyethylene insulating material for silver-gray wires and cables 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.

[0076] 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 pelletized. The ...

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PUM

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Abstract

The invention relates to the field of insulating materials, particularly a silver gray silane crosslinked polyethylene insulating material for wires and cables. The method for preparing a silver gray silane crosslinked polyethylene insulating material for wires and cables by a one-step process mainly comprises the following two steps: 1. preparing a catalyst master batch; and 2. preparing the finished product. The insulating material is prepared from LLDPE-7042 (linear low-density polyethylene 7042), LDPE (low-density polyethylene), a silane coupling agent, a crosslinking agent DCP, an antioxidant 300 and the catalyst master batch. The catalyst master batch is composed of LLDPE-7042, LLDPE-8320, PP (polypropylene), an antioxidant 1010, an antioxidant DLTP (dilauryl thiodipropionate), an antioxidant 1024, organic tin, a fluororubber master batch, a silver gray master batch and an ultraviolet absorbent. The material is mainly used as an insulation layer of the cable to mainly substitute the existing PVC (polyvinyl chloride) material, and has better insulating properties than PVC. The PVC can emit toxic harmful gas when the wire is aged or catches fire, but the silane insulating material does not have toxicity or harm.

Description

technical field [0001] The invention relates to the field of insulating materials, in particular to a silane crosslinked polyethylene insulating material for silver gray 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 p...

Claims

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Application Information

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