The Preparation of Solvent-free Polyurethane Laminatig Adhesive with Mixed-Polyols
A two-component polyurethane adhesive based on solvent-free was prepared with PBA,vegetable oil polyols,IPDI and several different small molecular polyols as main raw materials.The influences of different mole ratios of NCO groups (from prepolymer)and OH groups (from the mixed polyols) on water absorbing capacity and T-style peeling strength were studied,as well as the effects of small molecular polyols on curing speed,heat resistance,water absorbing capacity and T-style peeling strength.The results showed that PU adhesive performed the best when mole ratio of NCO/OH was 1.3 in this experiment.And small molecular polyols added to the adhesives can not increase the curing speed and the ability of heat resistance.However,it could significantly improve the adhesion strength of PU adhesive,and adding appropriate amount of small molecular polyols selectively could improve its water resistance.
solvent-free polyurethane vegetable oil polyol small molecular polyols laminating adhesive
CHEN Shuang-lian CHEN Guang-xue CHEN Qi-feng JIA Chun-jiang WANG Qin
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology,Guangzhou 510640, China
国际会议
太原
英文
177-182
2012-06-23（万方平台首次上网日期，不代表论文的发表时间）