Unilateral water-based adhesive and preparation method thereof

Abstract

The invention discloses a unilateral water-based adhesive and a preparation method thereof. The adhesive is prepared from the following raw materials in parts by weight: 35 to 44 parts of waterborne polyurethane dispersoid, 27 to 34 parts of waterborne polyurethane-organic silicon copolymer emulsion, 36 to 42 parts of a waterborne acrylamide-methacrylic acid copolymer, 6 to 8 parts of nano silicondioxide, 4 to 7 parts of carboxymethyl cellulose, 3 to 4.5 parts of an emulsifier and 2.5 to 3.2 parts of an antioxidant. The adhesive is prepared by carefully selecting the raw materials and optimizing the content of each raw material, so that the respective advantages of the raw materials are fully exerted, the raw materials are mutually supplemented and promoted, and the prepared unilateral water-based adhesive is high in 180-degree peel strength and good in adhesive property, good in wet viscosity and water resistance, and excellent in comprehensive use performance; when the adhesive is used for bonding the joint of two parts, only one side needs to be coated with the adhesive, the operation is simpler and more convenient, the production efficiency can be improved, the use amount of glue is reduced, the cost is reduced, the water resistance is good, and degumming is not likely to happen when the adhesive is dipped in water or soaked in water.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a unilateral water-based adhesive and a preparation method thereof. Background technique [0002] With the development of industry, the application market of adhesives (glue, or adhesives) is becoming more and more extensive, and the varieties are also increasing. Commonly used adhesives mainly include solvent-based, water-based and hot-melt types. At present, the amount of solvent-based products is relatively large. It uses volatile organic compounds such as benzene and toluene as solvents. These solvents will directly volatilize into the atmosphere during use to pollute the environment and endanger the health of workers. Therefore, many foreign government departments Promulgation of laws and regulations to limit the use of volatile organic compounds, the transformation of adhesives from solvent-based to water-based has become inevitable. [0003] Water-based (based) adhesives are one ...

AI Technical Summary

Problems solved by technology

[0006] 1. Poor properties such as peel strength, wet adhesion and water resistance;

[0007] 2. Generally, the adhesive (glue) is applied separately at the junction of the two parts (such as the sole and the upper), that is, double-sided coating, which is troublesome to operate, low in production efficiency, large in glue usage, and high in cost;

[0008] 3. If unilateral coating is used, the bonding performance is poor, and the 180° peel strength and other performance indicators are low, resulting in weak bonding and easy degumming

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