| abstract |
The invention relates to an adhesive and a preparation method and application thereof. The adhesive comprises the following components in parts by weight: 94-99.5 parts of an aqueous polyurethane dispersion, 0.5-5 parts of a wet adhesion promoter, and 0.03-5 parts of a defoamer 0.08 part, wetting agent 0.1-0.3 part, thickening agent 0.1-1 part; wherein, the hydroxyl content of the water-based polyurethane dispersion is 3-5 mgKOH/g, and the molecular weight is 15-250,000 Daltons; wherein the wet Adhesion promoters are alcohol ethers, alcohol esters or polyoxyethylene polyoxypropylene polyethers that have a destabilizing effect on polyurethane emulsions; plasticizing films. The water-based adhesive of the present invention is suitable for composite hemming applications such as quick-setting luggage leather goods, shoe uppers, furniture mattresses and the like. |