| abstract |
A water-based modified adhesive for synthetic leather and a preparation method thereof, comprising the following materials in parts by weight: 60-80 parts of an end-capping agent-terminated aqueous polyurethane emulsion, 20-40 parts of deionized water, and 0.01- parts of a defoamer 0.05 part, wetting agent 0.1-1 part, leveling agent 0.01-0.1 part, thickener 0.05-0.5 part. The sodium bisulfite-terminated aqueous polyurethane emulsion provided by the invention can control the appropriate end-capping ratio, the obtained emulsion is stable, the film-forming has high tensile strength and elongation at break, and the characteristics of unsealing at high temperature, When used as an adhesive for synthetic leather, in addition to high initial viscosity, excellent leveling and spreading, it also has a semi-dry state for a long time, which is easy to control in industrial production. |