Polyurethane adhesive and preparation method thereof

The invention discloses a polyurethane adhesive which comprises a component A and a component B, wherein the component A is an isocyanate terminated polyurethane prepolymer; the component B is a hydroxyl-terminated polyhydroxy compound; a molar ratio n(NCO)/n(OH) of the isocyanate (NCO) in the compo...

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Bibliographic Details
Main Authors RUAN WENHONG, CHEN YUCHENG, CHEN ZHIGUO, HOU GAOMING, ZHANG MINGQIU, LIN QIUYUN
Format Patent
LanguageChinese
English
Published 22.02.2019
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
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Summary:The invention discloses a polyurethane adhesive which comprises a component A and a component B, wherein the component A is an isocyanate terminated polyurethane prepolymer; the component B is a hydroxyl-terminated polyhydroxy compound; a molar ratio n(NCO)/n(OH) of the isocyanate (NCO) in the component A to the hydroxyl (OH) in the component B is equal to (1.5-2.5):1; the component A is mainly prepared from the following raw materials in parts by mass: oligomer resins a, polyisocyanates and oligomeric polyols; the component B is mainly prepared from the following raw materials in parts by mass: oligomer resins b, polyisocyanates, hyperbranched polymers, a nanometer material, a coupling agent, an antifoaming agent and a flatting agent; and the oligomer resins a and the oligomer resins b are prepared by carrying out a polyester reaction on small-molecule polybasic acids and small-molecule polyhydric alcohols. The adhesive is green, environment-friendly and safe and is capable of being resistant to high-tempera
Bibliography:Application Number: CN201811079540