是室温和热固化两种组分的聚氨酯胶粘剂，用于与涂漆或上底漆的金属和塑料粘合。 它具有抗流挂和抗冲击的能力。3M Scotch-Weld Urethane Adhesive 3549 Brown is a two component, room temperature and heat curing, polyurethane adhesive that is used for bonding to painted or primed metals and plastics. It offers resistance to sagging and impact. 1 qt Can Kit.3M Scotch-Weld Urethane Adhesive 3549 Brown is a two component, room temperature and heat curing, polyurethane adhesive that is used for bonding to painted or primed metals and plastics. It offers resistance to sagging and impact. 1 qt Can Kit.