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Polypropylene hot melt adhesive, preparation method thereof and preparation method of polypropylene contraction band

A polypropylene and hot-melt adhesive technology, which is applied in chemical instruments and methods, adhesives, and other chemical processes, can solve the problems of less polypropylene hot-melt adhesives and blank research on the long-term application performance of the adhesive layer, and achieve durable High temperature grade, excellent high temperature peel strength and shear strength, and low production cost

Active Publication Date: 2017-01-11
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic research on polypropylene hot melt adhesives is less, especially the research on the long-term application performance of the adhesive layer is still blank

Method used

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  • Polypropylene hot melt adhesive, preparation method thereof and preparation method of polypropylene contraction band
  • Polypropylene hot melt adhesive, preparation method thereof and preparation method of polypropylene contraction band
  • Polypropylene hot melt adhesive, preparation method thereof and preparation method of polypropylene contraction band

Examples

Experimental program
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Effect test

Embodiment 1

[0013] The polypropylene hot melt adhesive in this embodiment includes a matrix resin and a grafting agent; the weight ratio of the matrix resin to the grafting agent is 100:1.2. The matrix resin includes polypropylene, ethylene-vinyl acetate copolymer, polyethylene and tackifying resin; in 100% by weight, homopolypropylene accounts for 9.6%, block polypropylene accounts for 19.4%, polyethylene accounts for 49%, ethylene - Vinyl acetate copolymer accounted for 19%, tackifying resin accounted for 3%. Grafting agents include tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol, tris[2.4-di-tert-butylphenyl] phosphite, diisopropyl peroxide Benzene and maleic anhydride; in 100% by weight, maleic anhydride accounts for 59.3%, dicumyl peroxide accounts for 11.1%, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propane Acid] pentaerythritol ester accounted for 18.5%, and tris [2.4-di-tert-butylphenyl] phosphite accounted for 11.1%. The test results of various pe...

Embodiment 2

[0017] The polypropylene hot melt adhesive in this embodiment includes a matrix resin and a grafting agent; the weight ratio of the matrix resin to the grafting agent is 100:1.2. The matrix resin includes polypropylene, ethylene-vinyl acetate copolymer, polyethylene and tackifying resin; in 100% by weight, homopolypropylene accounts for 15%, block polypropylene accounts for 20%, polyethylene accounts for 45%, ethylene - Vinyl acetate copolymer accounts for 18%, and tackifying resin accounts for 2%. Grafting agents include tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol, tris[2.4-di-tert-butylphenyl] phosphite, diisopropyl peroxide Benzene and maleic anhydride; in 100% by weight, maleic anhydride accounts for 59.3%, dicumyl peroxide accounts for 11.1%, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propane Acid] pentaerythritol ester accounted for 18.5%, and tris [2.4-di-tert-butylphenyl] phosphite accounted for 11.1%. The test results of various per...

Embodiment 3

[0022] The polypropylene hot melt adhesive in this embodiment includes a matrix resin and a grafting agent; the weight ratio of the matrix resin to the grafting agent is 100:1. The matrix resin includes polypropylene, ethylene-vinyl acetate copolymer, polyethylene and tackifying resin; in 100% by weight, homopolypropylene accounts for 25%, polyethylene accounts for 45%, ethylene-vinyl acetate copolymer accounts for 25% %, tackifying resin accounts for 5%. Grafting agents include tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol, tris[2.4-di-tert-butylphenyl] phosphite, diisopropyl peroxide Benzene and maleic anhydride; in 100% by weight, maleic anhydride accounts for 55%, dicumyl peroxide accounts for 10%, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propane Acid] pentaerythritol ester accounts for 20%, tris [2.4-di-tert-butylphenyl] phosphite accounts for 15%. The test results of various performance indexes of the present embodiment polypropylene h...

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Abstract

The invention discloses a polypropylene hot melt adhesive, and belongs to the technical field of oil and gas pipeline corrosion prevention. The polypropylene hot melt adhesive comprises matrix resin and a grafting agent. The weight ratio of the matrix resin to the grafting agent is 100:1-100:2; the matrix resin is prepared from a polypropylene, ethylene-vinyl acetate copolymer, polyethylene and tackifying resin; the grafting agent is prepared from pentaerythritol ester, triguaiacyl phosphite, dicumyl peroxide and maleic anhydride. The invention further discloses preparation methods of the polypropylene hot melt adhesive and a polypropylene contraction band. The obtained polypropylene hot melt adhesive has the advantages of being high in temperature resistance class, excellent in high temperature peel strength and shear strength, good in anticorrosion sealing performance and the like, and is applicable to a 3PP outer anticorrosion coating field joint. The preparation methods have the advantages of being simple in technology, convenient to operate, low in production cost and the like and promote industrialized implementation.

Description

technical field [0001] The invention relates to the technical field of anticorrosion of oil and gas pipelines, in particular to a polypropylene hot-melt adhesive for pipeline joint anticorrosion heat-shrinkable tape and a preparation method thereof, and a method for preparing a polypropylene heat-shrinkable tape by using the polypropylene hot-melt adhesive. Background technique [0002] Three-layer polypropylene (3PP) and three-layer polyethylene (3PE) anti-corrosion coating belong to the multi-layer coating system, which is composed of bottom epoxy powder, middle layer adhesive and outer layer PP (polypropylene). Domestic and foreign three-layer polyolefin composite structure joints usually adopt heat shrinkable tape joint technology. The existing domestic heat shrinkable tape is usually used for 3PE external anti-corrosion layer joints. The maximum service temperature is 80 ° C, which cannot be used for 3PP external anti-corrosion layer. Make up for it. Through the resear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/06C09J123/12C09J153/00C09J123/08C09J151/06C09J11/06C09J7/02C08F255/02C08F222/06C09K3/10
CPCC08F255/02C08F255/026C08L2201/08C08L2205/02C08L2205/035C09J11/06C09J123/06C09J2423/04C09J2423/106C09K3/10C09K2003/1078C08L23/12C08L53/00C08L23/0853C08L51/06C08K5/1345C08K5/526C08F222/06
Inventor 窦宏强李建忠董彬崔超刘毅
Owner BC P INC CHINA NAT PETROLEUM CORP
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