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Room temperature super-fast curing double-component solvent-free polyurethane structural adhesive and preparation method and use method thereof

A solvent-free polyurethane, ultra-fast technology, applied in polyurea/polyurethane adhesives, adhesives, adhesive types, etc. Solve problems such as long glue time, achieve high peel strength, excellent adhesive performance, and simple preparation process

Inactive Publication Date: 2018-02-02
WENZHOU INST OF BIOMATERIALS & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The patent application number 201610820437.9 reports a solvent-free and non-foaming polyurethane structural adhesive and its preparation method. Adhesive operating time adjustable range is narrow and the problem of foaming in the curing process, but its gel time is 30min ~ 80min, the gel time is too long, which is not conducive to the rapid fixation of the adhered material and the rapid mass production of the factory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A room temperature super fast curing two-component solvent-free polyurethane structural adhesive, its A component is composed of 50% polyol, 15% catalyst, 30% filler and 5% stabilizer; B component is composed of The mass percentage is composed of 50% polymethylene polyphenyl polyisocyanate and 50% hexamethylene diisocyanate.

[0043] The polyol in component A is polyether polyol, and polyether polyol adopts polyoxypropylene diol, polyoxypropylene triol, polyoxypropylene tetraol, poly Composed of tetrahydrofuran diol and propylene oxide-ethylene oxide copolymerized diol.

[0044] The catalyst is two (dodecyl sulfide) dibutyl tin, trimethylene diamine, tetraethylene pentamine, N-methylmorpholine, N-methylimidazole and 1,4-Dimethylpiperazine.

[0045] The filler is talcum powder and diatomaceous earth with a mass ratio of 1:3.

[0046] The stabilizer is fumed white carbon black and polyamide or bentonite with a mass ratio of 3:2.

[0047] The preparation method of comp...

Embodiment 2

[0052] A two-component solvent-free polyurethane structural adhesive with ultra-fast curing at room temperature. The A component is composed of 39.5% polyol, 50% chain extender, 0.5% catalyst, and 10% stabilizer; B component Composed of polymethylene polyphenyl polyisocyanates.

[0053] The polyols in the A component are polyester polyols, and the polyester polyols are polyethylene adipate diol and polypropylene adipate glycol with a power ratio of 1:1:1:1:2. It is composed of ester diol, poly(1,4-butylene adipate) diol, poly(ethylene glycol adipate) diol, and poly(ethylene glycol) phthalate.

[0054] The extender is composed of neopentyl glycol, trimethylolpropane, trimethylolethane, pentaerythritol, and xylitol in a mass ratio of 1:1:1:2:1;

[0055] The catalyst is N-methylmorpholine, N-methylimidazole and 1,4-dimethylpiperazine with a mass ratio of 1:3;

[0056] The stabilizer is bentonite.

[0057] The preparation method of component A is as follows: dehydrate the polyo...

Embodiment 3

[0061] A room temperature ultra-fast curing two-component solvent-free polyurethane structural adhesive. The A component is composed of 90% polyol, 2% chain extender, 5% catalyst, 2% filler and 1% stabilizer. Composition; B component is composed of 60% polymethylene polyphenyl polyisocyanate and 40% hexamethylene diisocyanate by mass percentage.

[0062] The polyols in the A component are polyacrylate polyols, and the polyolefin polyols are hydroxyl-terminated polybutadiene, hydroxyl-terminated polybutadiene resins, hydroxyl-terminated polybutadiene resins with a quality of 1:2:1. ethylene-acrylonitrile or polystyrene polyols;

[0063] The extender is sorbitol;

[0064] The catalyst is zinc isooctanoate and phenylmercuric acetate with a mass ratio of 1:2;

[0065] The filler is titanium dioxide and barium sulfate with a mass ratio of 1:1;

[0066] The stabilizer is fumed white carbon black and bentonite with a mass ratio of 1:1.

[0067] The preparation method of component...

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PUM

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Abstract

The invention discloses a room temperature super-fast curing double-component solvent-free polyurethane structural adhesive including A and B components; the A component comprises the following components in parts by weight: 50-90 parts of polyols, 0-50 parts of a chain extender, 0.5-15 parts of a catalyst, 0-30 parts of a filler and 5-10 parts of a stabilizer; the B component includes the following two parts: 50-100 parts of polyaryl polymethylene isocyanate and 0-50 parts of hexamethylene diisocyanate. The structural adhesive prepared by the method can be rapidly cured at room temperature.

Description

technical field [0001] The invention relates to an adhesive, more specifically to a room-temperature ultra-fast curing two-component solvent-free polyurethane structural adhesive and a preparation and use method thereof. Background technique [0002] Polyurethane adhesives are widely used in engineering structures, automobile manufacturing and construction industries. Two-component polyurethane structural adhesive has excellent impact resistance, durability, fatigue resistance, low temperature resistance and excellent bonding strength, making it the first polyurethane structural adhesive. Many two-component polyurethane adhesives use solvents, which have a strong odor, are extremely harmful to the health of operators and pollute the environment, and will be replaced by solvent-free polyurethane adhesives; in addition, although there are many fast-curing at room temperature Two-component polyurethane structural adhesive products, but most of these quick-drying adhesives cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J175/06C09J175/08C09J175/14C08G18/76C08G18/73C08G18/69C08G18/66C08G18/65C08G18/42C08G18/48
CPCC08G18/4202C08G18/4816C08G18/4825C08G18/4829C08G18/4837C08G18/4854C08G18/6511C08G18/6588C08G18/664C08G18/6644C08G18/69C08G18/724C08G18/73C08G18/7664C09J175/04C09J175/06C09J175/08C09J175/14
Inventor 石长灿冯亚凯席光辉陈浩李娜杨啸刘雯
Owner WENZHOU INST OF BIOMATERIALS & ENG
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