Antistatic thermo-shrinkage material and manufacturing method thereof

A manufacturing method and anti-static technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of easy falling off of anti-static film, easy falling off of anti-static coating, anti-static effect, etc., to prevent the generation and accumulation of static electricity , the effect of small resistivity

Active Publication Date: 2008-09-03
CHANGYUAN ELECTRONICS DONGGUAN +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is: to overcome the problem that the antistatic film fixed with adhesive on the traditional antistatic packaging material is easy to fall off, and the problem that the antistatic coating is easy to fall off makes the antistatic effect poor, and to provide a kind of Anti-static heat-shrinkable material with small resistivity and good effect in preventing static generation and accumulation and its manufacturing method

Method used

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  • Antistatic thermo-shrinkage material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take polyolefin resin and adopt polyethylene (PE), 100 parts; Carbon black, 12 parts; Antioxidant tetrakis [β-(3', 5'-di-tert-butyl-4'-hydroxyphenyl) propionic acid] Pentaerythritol ester (commonly known as: 1010), 1 part; plastic processing lubricant adopts zinc stearate, 1.5 parts;

[0028] Fully melt, knead and granulate the polyolefin resin, carbon black, antioxidant and plastic processing lubricant measured in proportion with an open plastic mill or internal mixer or twin-screw mixer;

[0029] Extrude the uniformly mixed masterbatch into a pipe with a certain inner diameter and wall thickness with a conventional plastic single-screw extruder, and use a high-energy electron accelerator or radioactive element cobalt Co 60 After a certain dose of high-energy radiation is irradiated (about 10Mrad or 100KGY), the tube is first heated to 150°C, and the internal diameter of the tube is increased to 2.5 times the original by using the internal and external pressure differe...

Embodiment 2

[0031] Take ethylene-vinyl acetate copolymer EVA (VA content 14-18%) 80 parts, ethylene propylene rubber 20 parts; carbon black, 20 parts; antioxidant tetrakis [β-(3', 5'-di-tert-butyl -4'-hydroxyphenyl) propionic acid] pentaerythritol ester (commonly known as: 1010), 0.3 part; plastic processing lubricant adopts zinc stearate, 0.5 part;

[0032] Fully melt, knead and granulate the polyolefin resin, carbon black, antioxidant and plastic processing lubricant measured in proportion with an open plastic mill or internal mixer or twin-screw mixer;

[0033] Extrude the uniformly mixed masterbatch into a sheet with a certain width and thickness with a conventional plastic single-screw extruder, and use a high-energy electron accelerator or radioactive element cobalt Co 60 After irradiating a certain dose of high-energy radiation (about 10Mrad or 100KGY), the sheet is first heated to 150°C, and the sheet is stretched to both sides by mechanical force to make its width and inner diame...

Embodiment 3

[0035] Take 80 parts of ethylene-vinyl acetate copolymer EVA (VA content 14-18%), 20 parts of ethylene-propylene rubber; carbon black, 12.5 parts; antioxidant tetrakis[β-(3',5'-di-tert-butyl -4'-hydroxyphenyl) propionic acid] pentaerythritol ester (commonly known as: 1010), 0.5 part; plastic processing lubricant adopts zinc stearate, 1 part;

[0036] Fully melt, knead and granulate the polyolefin resin, carbon black, antioxidant and plastic processing lubricant measured in proportion with an open plastic mill or internal mixer or twin-screw mixer;

[0037] The uniformly mixed masterbatch is extruded into a sheet with a certain width and thickness with a conventional plastic single-screw extruder, and is processed by a high-energy electron accelerator or radioactive element cobalt Co 60 After irradiating a certain dose of high-energy radiation (about 10Mrad or 100KGY), the sheet is first heated to 150°C, and the sheet is stretched to both sides by mechanical force to make its w...

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Abstract

The invention provides an anti-static thermal contraction material, comprising( by weight): polyolefine resin 100 portion, carbon black 12-20 portion, antioxidant 0.3-1.0 portion, plastic processing lubricant 0.5-1.5 portion. The invention also provides a producing method for the anti-static thermal contraction material, comprising: step 1: adequately fusing the polyolefine resin, carbon black, antioxidant and plastic processing lubricant to mix and granulate; step 2: extruding and moulding; step 3: crosslinking the material moulded in step 2 by high energy electron irradiation and then expanding; quickly cooling and shaping to obtain green anti-static thermal contraction material. The thermal contraction material has less resistivity to prevent the static generating and accumulating, at the same time with contraction feature on heating.

Description

technical field [0001] The invention relates to an antistatic heat-shrinkable material and a manufacturing method thereof, the heat-shrinkable material has a small surface resistivity (10 6-11 Ω), can prevent the generation and accumulation of static electricity, and at the same time have the characteristics of shrinkage in the case of heating. Background technique [0002] The surface resistivity of conventional plastic materials and heat shrinkable materials is relatively high (greater than 10 12 Ω), which belongs to insulating materials. Using such materials as coating materials for electronic products often generates a large amount of high-voltage static electricity on the surface of plastic materials and heat-shrinkable materials. When this high-voltage static electricity is not handled properly, it will damage the packaged Electronic products are damaged by electric shock. [0003] In order to protect electronic products, it is necessary to use packaging materials wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08K5/09C09K3/16B29C47/00B29C35/08B29B9/12C08K3/04
Inventor 刘军曾志安麦家星鲁雪莲鲁尔兵
Owner CHANGYUAN ELECTRONICS DONGGUAN
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