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A kind of silane cross-linked polyethylene plastic for wires and cables

A polyethylene plastic and silane cross-linking technology, applied in the direction of coating, etc., can solve the problems affecting the speed of cross-linking, cable product quality, long production time of silane cables, low production efficiency, etc., and achieve low cost and aging resistance Good, high production efficiency effect

Active Publication Date: 2016-07-06
JIANGSU SHENYUAN MATERIAL SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the traditional silane modification process, the silane modification process is complex and the production time of silane cables is relatively long, the production cost is high and the production efficiency is low. In the silane reaction, silane crosslinking is mainly carried out in warm water. After the plastic is in contact with water, the penetration of water will directly affect the speed of crosslinking and the quality of cable products, so the reaction time needs to be strictly controlled

Method used

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  • A kind of silane cross-linked polyethylene plastic for wires and cables
  • A kind of silane cross-linked polyethylene plastic for wires and cables
  • A kind of silane cross-linked polyethylene plastic for wires and cables

Examples

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Effect test

Embodiment 1

[0039] It can be seen from the accompanying drawings that a production equipment for silane cross-linked polyethylene plastics for wire and cable includes an automatic metering device 1, a high-speed mixer 2, a screw feeder 3, a single-screw extruder 4, and a vacuum negative pressure remover 5. Drying tower 6, steam cross-linking device 7 and storage tank 8;

[0040] The high-speed mixer 2 includes a pot cover 9, a deflector 10, a base 13, a first power mechanism arranged in the base 13, and a barrel 11 arranged on the base 13. The lower end of the barrel 11 is provided with a rotating impeller 12, and the rotating impeller 12 is connected with the first power mechanism, the barrel 11 is provided with a pot cover 9, the pot cover 9 is provided with a locking device 14, the pot cover 9 is connected with the barrel 11 through the locking device 14, and the pot cover 9 is provided with There is a blowing device; there is a jacket inside the barrel 11, a deflector 10 is arranged o...

Embodiment 2

[0057] The production equipment embodiment 1 of silane cross-linked polyethylene plastics for wire and cable is the same.

[0058] The preparation method of silane crosslinked polyethylene plastic comprises the steps:

[0059] Take 98 parts of low-density polyethylene tree resin and dry it to a moisture content of 500PPm or less, then take 0.6 part of silane coupling agent and 0.5 part of initiator after weighing by automatic metering device 1, and send the materials into the unit through screw feeder 3 Mixing, plasticizing and high-temperature reaction are carried out in the screw extruder 4, and the moisture and volatile substances of the extruded product are removed through the vacuum negative pressure remover 5, and then the reactant is cooled and granulated, and then passed through the drying tower 6 After drying, the dried material is stored in a vacuum packaging bag to obtain the silane graft material A material:

[0060] Get 2 parts of low-density polyethylene resins,...

Embodiment 3

[0066] The production equipment embodiment 1 of silane cross-linked polyethylene plastics for wire and cable is the same.

[0067] The preparation method of silane crosslinked polyethylene plastic comprises the steps:

[0068]Take 95 parts of low-density polyethylene tree resin and dry it to below 500PPm, then take 0.6 part of silane coupling agent and 0.2 part of initiator after weighing by automatic metering device 1, and send the materials into the unit through screw feeder 3 Mixing, plasticizing and high-temperature reaction are carried out in the screw extruder 4, and the moisture and volatile substances of the extrudate are removed through the vacuum negative pressure remover 5, and then the reactant is cooled and granulated, and then passed through the drying tower 6 After drying, the dried material is stored in a vacuum packaging bag to obtain the silane graft material A material:

[0069] Get 5 parts of low-density polyethylene resins, 0.5 parts of silane coupling ag...

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Abstract

The invention relates to a production device and method of an organosilane crosslinked polyethylene plastics for wires and cables. The device comprises an automatic metering device, a high-speed mixer, a screw feeder, a single-screw extruder, a vacuum negative-pressure remover, a drying tower, a steam crosslinking device and a storage bucket, wherein the automatic metering device is sequentially connected with the high-speed mixer, the screw feeder, the single-screw extruder, the vacuum negative-pressure remover, the drying tower, the steam crosslinking device and the storage bucket. The method comprises two steps including preparing a material A and a material B and mixing the material A and the material B, wherein the material A is an organosilane grafting material, and the material B is catalyst master batch.

Description

technical field [0001] The invention relates to a polyethylene insulating plastic used for an insulating layer and a conduit of electric wires and cables, in particular to a production equipment and method for silane cross-linked polyethylene plastics for electric wires and cables. Background technique [0002] Polyethylene has good mechanical properties, electrical properties, chemical corrosion resistance, hygiene and molding performance, and can be selected as a building water supply pipe material. However, because the heat resistance, environmental stress cracking resistance, weather resistance, oil resistance and creep resistance of polyethylene are difficult to meet the requirements of building water supply pipes, polyethylene must be cross-linked and modified. Polyethylene can be crosslinked either physically or chemically. After polyethylene is cross-linked, the macromolecules change from a linear structure to a three-dimensional network structure, forming a multi-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B9/06B29B9/16B29C47/38B29C47/76B29C47/92C08L23/06C08L51/08B29C48/395B29C48/76B29C48/92
CPCB29B9/06B29B9/16B29C48/375B29C48/397B29C48/768B29C48/92B29C2948/92952C08F255/02C08L51/08C08L2205/025C08L2312/00C08F230/08
Inventor 袁森袁柳淑
Owner JIANGSU SHENYUAN MATERIAL SCI CO LTD