Low-friction-coefficient and solvent-free type polyurethane adhesive and preparation method thereof

• Main Authors: TIAN LIYUN, HE CHANGSHENG
• Format: Patent
• Language: Chinese; English
• Published: 22.03.2017
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES

The invention discloses low-friction-coefficient and solvent-free type polyurethane adhesive and a preparation method thereof and belongs to the field of polyurethane adhesive preparation. The adhesive is prepared from A component and B component, wherein the A component is prepared from modified polyester polyol and polyisocyanate which react with each other, and the B component is prepared from modified polyester polyol. By means of molecular design, the appropriate proportion of branched chain is introduced into the adhesive; thus, the regularity of the adhesive is reduced, a solidified adhesive layer of the adhesive has certain microcosmic unevenness, the microcosmic unevenness of a composite membrane is further obtained, the bonding force between surfaces is reduced, and the composite membrane has a low friction coefficient; as the branched chain is introduced into the adhesive, the crystalline of the molecular chain is reduced, the transparency of the adhesive is improved, the adhesive also can obtain l