Hot melt adhesive for cable accessories in nuclear island of nuclear power plant and preparation method thereof

A cable accessory, hot melt adhesive technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc. question

Active Publication Date: 2011-11-23
CHANGYUAN ELECTRONICS DONGGUAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the low softening point of the existing ethylene copolymer hot-melt adhesives in the nuclear island of nuclear power plants, which are not resistant to long-term high-temperature thermal aging , Not resistant to high-dose radiation, unable to withstand the defects of high-temperature, high-pressure water vapor and alkaline solution damage to the material, providing a material that can withstand high-temperature thermal aging and high-dose radiation, after high-temperature thermal aging and high-dose radiation Hot-melt adhesive capable of withstanding damage to materials by high-temperature, high-pressure water vapor and alkaline solution after treatment and preparation method thereof

Method used

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  • Hot melt adhesive for cable accessories in nuclear island of nuclear power plant and preparation method thereof
  • Hot melt adhesive for cable accessories in nuclear island of nuclear power plant and preparation method thereof
  • Hot melt adhesive for cable accessories in nuclear island of nuclear power plant and preparation method thereof

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preparation example Construction

[0030] The preparation method of the hot-melt adhesive for cable accessories in the nuclear island of the nuclear power plant of the present invention comprises the following steps:

[0031] Step 1: Mix ethylene copolymer hot melt adhesive, polyolefin elastomer, and composite antioxidant according to a certain ratio, knead with an internal mixer at 100~200°C for 20 minutes, and press the kneaded hot melt adhesive piece;

[0032] Step 2: The pressed hot melt adhesive is irradiated with an electron beam or a cobalt source, and the irradiation dose is 20-150 kGy. After irradiation, the hot melt adhesive is partially cross-linked, the ring and ball softening point is increased, and the fluidity is reduced.

[0033] The following examples will help to understand the present invention, but can not limit the content of the present invention.

Embodiment 1

[0035] Take 100 parts of ethylene copolymer hot melt adhesive (ethylene-vinyl acetate copolymer hot melt adhesive), 30 parts of polyolefin elastomer (POE 8150), composite antioxidant ([β-(3',5'-di-tert-butyl Base-4'-hydroxyphenyl) propionate] pentaerythritol ester (antioxidant 1010), dioctadecyl pentaerythritol bisphosphite (antioxidant 618), dilauryl thiodipropionate (antioxidant DLTDP ) at a ratio of 2:1:1) to 5 parts, the above materials were mixed repeatedly for 20 minutes at 150°C using an internal mixer, and the materials were pressed into thin sheets and then cross-linked under electron beam irradiation with a radiation dose of 100 kGy .

[0036] The properties of hot melt adhesive are as follows:

[0037]

Embodiment 2

[0039] Take 100 parts of ethylene copolymer hot melt adhesive (ethylene-vinyl acetate copolymer hot melt adhesive), 100 parts of polyolefin elastomer (POE 8150), composite antioxidant ([β-(3',5'-di-tert-butyl Base-4'-hydroxyphenyl) propionate] pentaerythritol ester (antioxidant 1010), dioctadecyl pentaerythritol bisphosphite (antioxidant 618), dilauryl thiodipropionate (antioxidant DLTDP ) at a ratio of 2:1:1) to 10 parts, the above materials were mixed repeatedly for 20 minutes at 150°C using an internal mixer, and the materials were pressed into thin sheets and then cross-linked under electron beam irradiation with a radiation dose of 20 kGy .

[0040] The properties of hot melt adhesive are as follows:

[0041]

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Abstract

The invention relates to a hot melt adhesive for cable accessories in a nuclear island of a nuclear power plant, and the hot melt adhesive is composed of the following components in parts by weight: 100 parts of ethylene copolymer hot melt adhesive, 30-100 parts of polyolefin elastomer and 5-10 parts of composite antioxidant, wherein the ethylene copolymer hot melt adhesive comprises one or more of ethylene-vinyl acetate copolymer hot melt adhesive, ethylene-ethyl acrylate copolymer hot melt adhesive, and ethylene-methyl acrylate copolymer hot melt adhesive; the polyolefin elastomer is a molecular-chain-saturated ethylene and C3-C20 alpha-olefin copolymer; and the composite antioxidant is one or more of a hindered phenolic antioxidant, a sulfur-containing antioxidant and an ester antioxidant. The hot melt adhesive provided by the invention can be applied to the cable accessories in the nuclear island of the nuclear power plant, and can also be used in aviation, shipping, nuclear submarine and other fields with higher performance requirements on the hot melt adhesive.

Description

technical field [0001] The invention relates to a hot-melt adhesive and a preparation method thereof. The hot-melt adhesive can be used in cable accessories in the nuclear island of a nuclear power plant, and can also be used in fields such as aviation, ships, and nuclear submarines that require relatively high performance of hot-melt adhesives. middle. Background technique [0002] Hot-melt adhesive is a one-component, anhydrous, solvent-free, solid at room temperature, adhesive that can bond the surface of materials after melting at high temperature. Due to the advantages of high bonding strength and fast curing speed, hot melt adhesives have been widely used in food packaging, book binding, disposable sanitary products industry, furniture industry, cable accessories and many other fields since their inception. [0003] In some special occasions, there are higher requirements for hot melt adhesives, such as heat-shrinkable power cable accessories used in the nuclear islan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J11/06
Inventor 王哲赵成刚李欲晓尹沾松鲁尔兵
Owner CHANGYUAN ELECTRONICS DONGGUAN
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