Gaomeng New Materials applied for a patent for flame-retardant polyurethane adhesive. The bonding base materials include SMC, metal, PVC, etc.

News on November 25, 2023, according to the announcement of the State Intellectual Property Office, Beijing Gaomeng New Materials Co., Ltd. applied for a project called “A vegetable oil-based flame retardant two-component polyurethane adhesive and its preparation Method”, Publication No. CN117106406A, application date is August 2023.

The patent abstract shows that the invention relates to a vegetable oil-based flame retardant two-component polyurethane adhesive and its preparation method. First, the vegetable oil polyol is reacted with isocyanate to prepare a hydroxyl-terminated polyurethane prepolymer; secondly, a silane coupling agent is used at a certain temperature and rotation speed. The linking agent is used to dry-modify fillers and flame retardants. Then, the prepared hydroxyl-terminated prepolymer, modified filler and modified flame retardant are mixed with a flame retardant, chain extender, cross-linking agent, catalyst, etc. to prepare component A; component B is the isocyanate component. Mix component A and component B uniformly in a ratio of 3 to 5:1 to obtain a flame-retardant polyurethane adhesive. The adhesive has a wide range of bonding base materials, including SMC, metal, PVC, etc., and has excellent bonding performance. The aluminum sheet/aluminum sheet bonding strength reaches more than 15MPa, and the adhesive has excellent flame retardant properties, with a limiting oxygen index of up to More than 30, after igniting for 10 seconds, it will be extinguished within 5 seconds of leaving the fire, and no molten droplets will be generated. The flame retardant grade reaches UL94 V0 level.