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Heat resistant waterproof high strength polyurethane adhesive and preparing method thereof

A polyurethane adhesive, water-resistant technology, used in polyurea/polyurethane adhesives, adhesives, non-polymer adhesive additives, etc., can solve the problem that the bonding strength cannot meet its requirements, the requirements of temperature and water resistance are low, etc. problems, to achieve the effect of shortened curing time, high peel strength and temperature resistance, and fewer processes

Active Publication Date: 2016-02-24
SHANDONG NORTH MODERN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the strong polar and chemically active groups contained in polyurethane adhesives, it has excellent chemical adhesion to porous materials such as foam plastics, leather, fabrics, paper, ceramics, and materials with smooth surfaces such as metal, glass, and plastics. Heli, the existing polyurethane adhesives are mostly used in the shoemaking industry and labor protection products industry. The above industries have low requirements on temperature and water resistance, so ordinary polyurethane adhesives can meet their requirements; but for materials in special environments, The bonding strength of existing polyurethane adhesives cannot meet its requirements. For example, inflatable rubber boats, inflatable lifebuoys, life jackets and other play equipment for marine recreation projects need to be used in coastal high-temperature and high-humidity environments in summer, which requires them to be used The adhesive has better bonding strength and high temperature resistance, so as to ensure that the above toys will not leak during use and ensure the safety of the passengers

Method used

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preparation example Construction

[0036] The present invention also includes a preparation method of heat-resistant and water-resistant high-strength polyurethane adhesive, comprising the following steps:

[0037] Mix 5~15 parts of polybutylene adipate, 3~12 parts of polybutylene adipate, 0.5~2 parts of castor oil modified polyol H-18230, 0.5~2 parts of castor oil modified polyol H-520.1~ 3 parts and 0.1~2.5 parts of castor oil modified polyol AC-006 are mixed and added to the reactor to raise the temperature to 80~100°C, add 0.1~0.5 parts of chain extender a under stirring, and adjust the temperature of the reactor to 50~ After 60°C, add 20~30 parts of organic solvent and 1~5 parts of isocyanate a, react for 0.5h, add 0.01~0.1 parts of catalyst to the reaction kettle, and raise the temperature of the reaction kettle to 78~85℃ for 2.5~3. 5 h, to obtain the reaction solution;

[0038] Described chain extender a is any one in 1,4-butanediol, 1,6-hexanediol, trimethylolpropane or neopentyl glycol; Described or...

Embodiment 1

[0054]A heat-resistant and water-resistant high-strength polyurethane adhesive, composed of a main component and an improver component with a mass ratio of 10:1; the main component is synthesized from the following raw materials in parts by weight: polyadipic acid 5 parts of butanediol ester, 3 parts of polyhexamethylene adipate, 30.5 parts of castor oil modified polyol H-18230.1 parts, castor oil modified polyol H-520.1 part, 0.1 part of castor oil modified polyol AC-006 , 1 part of isocyanate a diphenylmethane diisocyanate, 0.1 part of chain extender a1,4-butanediol, 0.01 part of catalyst dibutyltin dilaurate, antioxidant tetrakis[β-(3,5-di-tert-butyl 0.01 part of 4-hydroxyphenyl) propionate] pentaerythritol ester, 0.01 part of ultraviolet absorber 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole 0.05 parts of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, 0.0001 parts of regulator dodecyl mercaptan and 70 parts of organic solvent, 10 par...

Embodiment 2

[0056] A heat-resistant and water-resistant high-strength polyurethane adhesive, composed of a main component and an improver component with a mass ratio of 15:1; the main component is synthesized from the following raw materials in parts by weight: polyadipic acid Butanediol ester 15 parts, polyhexamethylene adipate 12 parts, castor oil modified polyol H-18232 parts, castor oil modified polyol H-523 parts, castor oil modified polyol AC-006 2.5 parts , Isocyanate a isophorone diisocyanate 5 parts, chain extender a trimethylolpropane 0.5 parts, catalyst stannous octoate 0.1 part, antioxidant tetrakis[β-(3,5-di-tert-butyl 4-hydroxy 0.05 part of phenyl) propionic acid] pentaerythritol ester, 0.1 part of ultraviolet absorber 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole, light 0.3 parts of stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, 0.0005 parts of regulator dodecyl mercaptan and 80 parts of organic solvent; the organic solvent It is obtained ...

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Abstract

The invention discloses a heat resistant waterproof high strength polyurethane adhesive and a preparing method thereof. The heat resistant waterproof high strength polyurethane adhesive is prepared from a main component and an improver component with a mass ratio of (10 to 15):1. The synthetic raw materials of the main component comprise poly ethylene succinate, poly hexanediol adipate, castor oil-modified polyhydric alcohol H-1823, castor oil-modified polyhydric alcohol H-52, castor oil-modified polyhydric alcohol AC-006, isocyanate a and the like; synthetic raw materials of the improver component comprise: chain extender b, isocyanate b and ethyl acetate. The polyurethane adhesive has very good initial adhesive force, higher peel strength and temperature resistant performance due to the two kinds of high crystallinity polyester polyols and an addition proportion thereof, and the waterproofness of the polyurethane adhesive is improved due to the addition of the castor oil-modified polyhydric alcohols. The heat resistant waterproof high strength polyurethane adhesive is particularly suitable for offshore equipment such as a rubber dinghy; the preparing method has less procedures, the steps are easy to operate and convenience for industrialized production is realized.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a heat-resistant and water-resistant high-strength polyurethane adhesive and a preparation method thereof. Background technique [0002] Due to the strong polar and chemically active groups contained in polyurethane adhesives, it has excellent chemical adhesion to porous materials such as foam plastics, leather, fabrics, paper, ceramics, and materials with smooth surfaces such as metal, glass, and plastics. Heli, the existing polyurethane adhesives are mostly used in the shoemaking industry and labor protection products industry. The above industries have low requirements on temperature and water resistance, so ordinary polyurethane adhesives can meet their requirements; but for materials in special environments, The bonding strength of existing polyurethane adhesives cannot meet its requirements. For example, inflatable rubber boats, inflatable lifebuoys, life jackets and othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/42C08G18/36C08G18/66C08G18/76C09J175/06C09J175/04C09J11/06
CPCC08G18/36C08G18/4202C08G18/4238C08G18/664C08G18/7614C08G18/7671C08L2201/08C08L2205/02C09J11/06C09J175/06C08L75/04C08K5/1345C08K5/3475C08K5/3462
Inventor 葛玲娟陈晓理聂锡铭齐春平刘萍李迎忠程兰云
Owner SHANDONG NORTH MODERN CHEM IND
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