Preparation method of double-sided self-adhesive polyurethane foam and product

• Main Authors: WEI QIONG, GAO HULIANG
• Format: Patent
• Language: Chinese; English
• Published: 13.09.2022
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PAINTS; POLISHES; USE OF MATERIALS AS ADHESIVES

The invention provides a preparation method of double-sided self-adhesive polyurethane foam and a product, and belongs to the field of foaming materials, and the preparation method comprises the following steps: S1, preparing a polyacrylate adhesive by taking acrylate as a polymerization main body, then carrying out end capping on the polyacrylate adhesive by using an end capping agent to prepare a polyacrylate adhesive with a hydroxyl-containing end group, and then, carrying out end capping on the polyacrylate adhesive by using an end capping agent to prepare the double-sided self-adhesive polyurethane foam; s2, one surface of a release film is coated with the polyacrylate adhesive which is prepared in the step S1 and contains hydroxyl at the end group, and S3, a polyurethane A and B double-component foaming material is coated between the two layers of release films prepared in the step S2, and the polyurethane A and B double-component foaming material is located between the two opposite faces, provided with