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A kind of composite polyester hot melt adhesive, preparation method and preparation method of anti-erosion 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 the effects of improving bond strength and curing speed, good impact resistance, and increasing curing speed

Active Publication Date: 2020-06-09
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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  • A kind of composite polyester hot melt adhesive, preparation method and preparation method of anti-erosion geotextile
  • A kind of composite polyester hot melt adhesive, preparation method and preparation method of anti-erosion 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, belonging to the technical field of polyester hot melt adhesive preparation. The preparation method of the composite polyester hot-melt adhesive comprises the following steps: carrying out the esterification reaction of the dibasic acid and the dibasic alcohol under the action of a titanium / cobalt composite catalyst under the protection of nitrogen, and then adding a stabilizer to carry out the polycondensation reaction, The obtained polyester hot melt adhesive is then added with polymethyl methacrylate microspheres for mixing and stirring to obtain a composite polyester hot melt adhesive. The obtained composite polyester hot melt adhesive is bonded to polyethylene terephthalate woven cloth and polypropylene geotextile to obtain anti-scouring geotextile. The composite polyester hot melt adhesive of the invention has high bonding strength and good impact resistance, and the prepared anti-scour geotextile has the advantages of high scour-resistant strength, good soil retention performance, strong 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 Patents(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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