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Double-component water-based binder and preparation method thereof

A water-based adhesive, two-component technology, used in adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of poor mechanical properties, low bonding strength, etc., and achieve high bonding strength. , high solids content, enhanced Coulomb force and hydrogen bonding force

Inactive Publication Date: 2018-12-21
吴伟华
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a two-component water-based adhesive and its preparation method in view of the problems of low bond strength and poor mechanical properties of the current water-based adhesive

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  • Double-component water-based binder and preparation method thereof

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preparation example Construction

[0029] A preparation method of a two-component water-based binder, comprising the steps of:

[0030]S1. Take montmorillonite and mix it with distilled water at a mass ratio of 1~3:15~20, then add octadecyltrimethylammonium chloride with 30~40% of the mass of montmorillonite, and stir and mix at 75~80°C for 3 ~4h, suction filtration, take the suction filter residue and wash it with deionized water for 3~5 times to get the washings, take the washings and add sorbitol according to the mass ratio of 10~15:2~5, ultrasonically oscillate for 4~5h, then add the washings Component A of the water-based binder with 8~10 times the mass is stirred and mixed at 65~70°C for 20~30min, then heated to 115~125°C, kept at a vacuum of -0.06MPa for 30~40min, cooled to 65~75 ℃, to get cooling material;

[0031] S2. Take the cooling material and add absolute ethanol according to the mass ratio of 50~60:13~20, stir and mix for 20~30min to obtain the mixture, take the mixture and add the water-based b...

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Abstract

The invention discloses a double-component water-based binder and a preparation method thereof, and belongs to the technical field of chemical products. According to the double-component water-based binder and the preparation method thereof, dimethylolbutanoic acid is used as a chain extender, polycaprolactone dihydric alcohol and isophorone diisocyanate are added for reaction to form a polyurethane prepolymer of a water-based binder A component, thus the water absorption of an adhesive film is reduced, the water resistance of the binder is improved, carboxyl and a sulfonic group are introduced to a molecular chain segment of the binder at the same time, and the advantages of the two hydrophilic groups supplement each another, so that the water-based binder with high solid content, high binding strength and water resistance performance is prepared. By means of the double-component water-based binder, the problems that current water-based binders are low in binding strength and poor inmechanical performance are solved, and the double-component water-based binder and the preparation method thereof are provided.

Description

technical field [0001] The invention relates to the technical field of chemical products, in particular to a two-component water-based adhesive and a preparation method thereof. Background technique [0002] With the improvement of people's living standards and the increase of environmental awareness, water-based adhesives are widely used because they do not contain organic solvents, are non-polluting, safe, non-toxic, and environmentally friendly compared to oil-based polyurethanes. [0003] The current water-based polyurethane water-based adhesives generally have problems such as water resistance, poor bonding strength, chemical resistance and temperature resistance. The existing water-based PU adhesives generally have poor water resistance, alkali resistance and temperature resistance. It is easy to foam and fall off when the attached clothes are washed in washing powder or washing machine. Most of the adhesives with good lamination strength are oily, which is not environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J163/00C09J11/04
CPCC09J11/04C09J175/06C08L63/00C08K9/04C08K3/346
Inventor 吴伟华路芸付平
Owner 吴伟华
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