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Composite polyester hot melt adhesive, preparation method and preparation method of anti-scouring geotextile

A technology of polyester hot-melt adhesive and composite polyester, applied in the direction of soil protection, chemical instruments and methods, adhesives, etc., can solve the problems of low scouring strength, poor scouring performance, and poor soil retention performance of geotextiles. Achieve high erosion resistance, good impact resistance, and reduce rigidity

Active Publication Date: 2019-10-11
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a composite polyester hot melt adhesive, a preparation method and a preparation method of anti-scouring geotextiles, so as to solve the common problems of low bonding strength, slow curing speed and low erosion resistance of existing polyester hot-melt adhesives. Poor problems and geotextiles have problems of low scouring strength, poor soil retention performance, poor protection ability, and short service life

Method used

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  • Composite polyester hot melt adhesive, preparation method and preparation method of anti-scouring geotextile
  • Composite polyester hot melt adhesive, preparation method and preparation method of anti-scouring geotextile

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Embodiment 1

[0032] The preparation method of the composite polyester hot-melt adhesive of the present embodiment may further comprise the steps:

[0033] (1) Carry out esterification reaction with dibasic acid and dibasic alcohol under the action of titanium / cobalt composite catalyst, under the protection of nitrogen, the reaction temperature is 180 ℃, when the distilled water of esterification reaction is 95% of theoretical water output, After the esterification reaction is finished, an esterified product is obtained.

[0034] Wherein, the mass ratio of dibasic acid and dibasic alcohol is 1:1.2;

[0035] The dibasic acid is a mixture of terephthalic acid, isophthalic acid and 2-phenylglutaric acid, and the molar ratio of the respective addition amounts is 1:0.10:0.10.

[0036] The dihydric alcohol is a mixture of divinyl hexanediol, diethylene glycol and 1,4-butanediol, and the molar ratio of their respective addition amounts is 1.0:0.5:0.2.

[0037] The titanium / cobalt composite catal...

Embodiment 2

[0041] The preparation method of the composite polyester hot-melt adhesive of the present embodiment may further comprise the steps:

[0042] (1) Carry out esterification reaction with dibasic acid and dibasic alcohol under the action of titanium / cobalt composite catalyst, under the protection of nitrogen, the reaction temperature is 190 ℃, when the distilled water of esterification reaction is 97% of theoretical water output, After the esterification reaction is finished, an esterified product is obtained.

[0043] Wherein, the mass ratio of dibasic acid and dibasic alcohol is 1:1.4;

[0044] The dibasic acid is a mixture of terephthalic acid, isophthalic acid and 2-phenylglutaric acid, and the molar ratio of the respective addition amounts is 1:0.20:0.20.

[0045] The dihydric alcohol is a mixture of divinyl hexanediol, diethylene glycol and 1,4-butanediol, and the molar ratio of their respective addition amounts is 1.1:0.6:0.3.

[0046] The titanium / cobalt composite catal...

Embodiment 3

[0050] The preparation method of the composite polyester hot-melt adhesive of the present embodiment may further comprise the steps:

[0051] (1) Carry out esterification reaction with dibasic acid and dibasic alcohol under the action of titanium / cobalt composite catalyst, under the protection of nitrogen, the reaction temperature is 200 ℃, when the distilled water of esterification reaction is 98% of theoretical water output, After the esterification reaction is finished, an esterified product is obtained.

[0052] Wherein, the mass ratio of dibasic acid and dibasic alcohol is 1:1.5;

[0053] The dibasic acid is a mixture of terephthalic acid, isophthalic acid and 2-phenylglutaric acid, and the molar ratio of the respective addition amounts is 1:0.30:0.30.

[0054] The dihydric alcohol is a mixture of divinyl hexanediol, diethylene glycol and 1,4-butanediol, and the molar ratio of their respective addition amounts is 1.2:0.7:0.4.

[0055] The titanium / cobalt composite catal...

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Abstract

The invention discloses a composite polyester hot melt adhesive, a preparation method and a preparation method of an anti-scouring geotextile, and belongs to the technical field of preparation of polyester hot melt adhesives. The preparation method of the composite polyester hot melt adhesive comprises the following steps of carrying out an esterification reaction on dibasic acid and dihydric alcohol under the effect of a titanium / cobalt composite catalyst and nitrogen protection, adding a stabilizer to carry out a polycondensation reaction to obtain a polyester hot melt adhesive, and then adding polymethyl methacrylate microspheres for mixing and stirring to obtain the composite polyester hot melt adhesive. The anti-scouring geotextile can be obtained by bonding the obtained composite polyester hot melt adhesive to a polyethylene terephthalate woven fabric and a polypropylene geotextile. The composite polyester hot melt adhesive has high bonding strength and great impact resistance, and the prepared anti-scouring geotextile has the advantages of high anti-scouring strength, great soil retention performance, high protection ability and long service life.

Description

technical field [0001] The invention relates to the technical field of preparation of polyester hot-melt adhesives, in particular to a composite polyester hot-melt adhesive, a preparation method and a preparation method of an anti-erosion geotextile. Background technique [0002] Due to the advantages of light weight, good flexibility, high strength, strong integrity and not easy to rot, geotextiles have the functions of reverse filtration, drainage, isolation, reinforcement and anti-seepage in projects, which can improve project quality, so they are widely used in water conservancy , water transportation, highway, construction and other engineering fields. [0003] Among them, polyester hot melt adhesives are often used in the bonding process of geotextiles. The preparation methods mainly include direct esterification polycondensation and transesterification polycondensation. Among them, low molecular weight toxic substances will be generated during the synthesis of transes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J167/06C09J11/06C09J11/08C08G63/676C08G63/82C08G63/85B32B37/10B32B37/12B32B27/02B32B27/12B32B27/32B32B27/36B32B7/12E02D3/00E01C3/04
CPCC09J167/06C09J11/06C09J11/08C08G63/676C08G63/85C08G63/826B32B37/10B32B37/1207B32B5/02B32B5/26B32B7/12E02D3/00E01C3/04C08L2205/18B32B2037/1215B32B2307/306B32B2307/7265B32B2307/558B32B2262/0284B32B2262/0253C08L33/12C08K5/1545C09J167/025C08G63/672C08G63/181B32B5/024B32B2255/26B32B5/262B32B2571/00B32B2255/02B32B2250/02B32B2250/20C09J7/25C09J7/10C09J2301/408C09J2301/412C09J2301/304C09J167/03
Inventor 于沭陈祖煜张茂省薛强李炎隆司政李鹏边京红郝建伟周嘉伟岳凡张茵琪晁华怡
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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