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Combination of modified polyurethane and aqueous polyurethane adhesive

A composition and polyurethane technology, applied in polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of poor initial bond strength and low peel strength, and achieve good water resistance

Active Publication Date: 2011-01-19
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the introduction of crosslinking agent and epoxy resin, the cohesive strength and bond strength of the modified waterborne polyurethane adhesive have been improved, but its initial bond strength is still poor, and the peel strength is still low

Method used

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Embodiment 3

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Abstract

The invention provides a compound with a structure shown as formula (I), wherein R1 is an isophorone group, hexyl, methyl cyclohexyl, dicyclohexyl methyl or methylphenyl, R2 is polyester group, R3 is a tertiary amine group, and m is the polymerization degree and is no less than 0 and no more than 12. The invention also provides an aqueous polyurethane adhesive combination, comprising the following compositions in parts by weight: 43-78 parts of modified polyurethane with a structure shown as the formula (I), 0.8-2 parts of waterborne wetting agent, 1-3 parts of waterborne flow agent, 1.3-3.5 parts of waterborne defoaming agent, 13-21 parts of waterborne cosolvent and 20-47 parts of crosslinking agent. The aqueous polyurethane adhesive combination has the advantages of good water resistance, strong bond strength, strong initial adhesive strength and strong peel strength and can be used as an adhesive for an interior decorating piece of a vehicle.

Description

technical field The invention relates to the technical field of adhesives, in particular to a modified polyurethane and a water-based polyurethane adhesive composition. Background technique Solvent-based polyurethane adhesive refers to an adhesive formed by dissolving or dispersing polyurethane in an organic solvent, which has the advantages of good elasticity, low temperature resistance, and excellent abrasion resistance. Solvent-based polyurethane adhesives are widely used in automotive interior parts PVC ( PVC) artificial leather, dashboards, fenders, door panels, carpets and headlining. However, solvent-based polyurethane adhesives contain toxic and harmful substances such as benzene, toluene, and xylene, which not only pollute the environment, but also endanger human health. Therefore, water-based polyurethane adhesives for automotive interior parts have become one of the research hotspots. The prior art has disclosed a variety of water-based polyurethane adhesives....

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/58C08G18/42C08G18/38C09J175/06
Inventor 张红明李季王献红王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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