双酚A型单组分聚氨酯胶粘剂的制备与性能研究  

Preparation and properties of bisphenol A type one-component polyurethane adhesive

作　　者：张探 张洋[1] 潘恒[1] 张栾 杨浩 管蓉[1] 

机构地区：[1]有机功能分子合成与应用教育部重点实验室湖北大学化学化工学院,湖北武汉430062

出　　处：《粘接》2015年第7期41-44,40,共5页Adhesion

摘　　要：以双酚A(BPA)为扩链剂,采用一步法合成工艺,制备了性能优良的单组分聚氨酯(PU)胶粘剂。实验结果表明,随BPA与聚醚2000(N-220)物质的量比的增加,拉伸强度和T剥离强度均显著增加,断裂伸长率呈下降趋势;物质的量比为6:5的PU胶粘剂较3:5的PU胶粘剂初始分解温度高9℃,加热到400℃时,失重率降低6.83%;热氧老化后,拉伸强度、断裂伸长率及邵A硬度的保持率均呈下降趋势。The one-component polyurethane （PU） adhesive with preferable properties was prepared via the one- step method using bisphenol A（BPA） as the chain extender. The experimental results showed that when the mole ratio of BPA and polyether 2000（N-220） was increased, the tensile strength and T-peeling strength were increased, and the elongation at break was decreased, respectively. The initial decomposition temperature of adhesive with mole ratio of 6：5 was 9℃ higher than that of one with mole ratio of 3：5. When heated to 400℃, the weight loss ratio of PU adhesive decreased by 6.83%. Meanwhile, some properties retention like the tensile strength, elongation at break and Shore A hardness were decreased after thermal oxidative aging.

关 键 词：聚氨酯 双酚A 耐热性能 热氧老化 

分 类 号：TQ433.432[化学工程]