CAJ | 학술논문

以六亚甲基二异氰酸酯（ HDI）、聚醚多元醇（PPG）及3,3’-二氯-4,4’-二氨基二苯基甲烷（MOCA）为主要原料，采用2步法制备一种无溶剂型双组分耐黄变PU胶粘剂。通过傅立叶红外（FT-IR）和差热扫描（DSC）对其结构及性能进行分析。讨论了PPG、MOCA含量及双组分配比对PU胶粘剂性能的影响。结果表明，采用低分子质量的PPG能显著地降低胶粘剂的黏度，胶粘剂的固化速率随MOCA（交联剂）含量的增加而显著提高；固化后的胶粘剂具有良好的耐化学药品性、耐低温性和耐黄变性。通过DSC曲线确定了固化后胶膜的Tg为46.1℃。
이륙아갑기이이청산지（ HDI）、취미다원순（PPG）급3,3’-이록-4,4’-이안기이분기갑완（MOCA）위주요원료，채용2보법제비일충무용제형쌍조분내황변PU효점제。통과부립협홍외（FT-IR）화차열소묘（DSC）대기결구급성능진행분석。토론료PPG、MOCA함량급쌍조분배비대PU효점제성능적영향。결과표명，채용저분자질량적PPG능현저지강저효점제적점도，효점제적고화속솔수MOCA（교련제）함량적증가이현저제고；고화후적효점제구유량호적내화학약품성、내저온성화내황변성。통과DSC곡선학정료고화후효막적Tg위46.1℃。
With hexamethylene diisocyanate (HDI),polyether polyol (PPG) and 3,3’-dichloro-4,4’-diaminodiphenylmethane (MOCA) as main raw materials,a solvent-free two-component anti-yellowing polyurethane adhesive was synthesized by two-step method.The structure and performance of the polyurethane adhesive were characterized by FT-IR and DSC,and the influences of some factors (such as PPG,MOCA and weight ratio of A component to B component) on polyurethane adhesive properties were discussed.The results show that the PPG with low molecular weight can obviously decrease the viscosity of adhesive;the content of crosslinker is inversely proportional to the curing speed of adhesive.The chemical résistance,durable yellowing and low temperature resistance of the polyurethane adhesive that had cured are all great.The glass transition temperature (Tg) of cured adhesive film is 46.1℃.