CAJ | 학술논문

使用聚乙二醇与聚丙二醇的共聚物（PEG-PPG）和二苯基甲烷二异氰酸酯（MDI）为原料，在催化剂的存在下合成末端有异氰酸酯基的反应性聚氨酯。该反应性聚氨酯在催化剂XCT．cat57及固化促进剂XCT—cat37的存在下，再与一种低黏度双酚A型环氧树脂按不同的比例混合，由此组成了低黏度环氧树脂／反应性聚氨酯固化体系。研究了低黏度共混物的黏结效果，评价了其固化物的黏结强度。研究结果显示，当m（环氧树脂6002）：m（反应性聚氨酯）等于50：50时，共混树脂固化物具有最佳的力学性能。
사용취을이순여취병이순적공취물（PEG-PPG）화이분기갑완이이청산지（MDI）위원료，재최화제적존재하합성말단유이청산지기적반응성취안지。해반응성취안지재최화제XCT．cat57급고화촉진제XCT—cat37적존재하，재여일충저점도쌍분A형배양수지안불동적비례혼합，유차조성료저점도배양수지／반응성취안지고화체계。연구료저점도공혼물적점결효과，평개료기고화물적점결강도。연구결과현시，당m（배양수지6002）：m（반응성취안지）등우50：50시，공혼수지고화물구유최가적역학성능。
A kind of reactive polyurethane having isocyanato group at two end was synthesized by the reaction of a copolymer of PEG-PPG and MDI. The curing system with low viscosity was produced when epoxy resin 6002 mixed with the reactive polyurethane in the presence of catalyst XCT-cat57 and curing accelerator XCT-cat37. The adhesiveness of the blend resin with low viscosity was investigated and the adhesion strength of the cured blend resin was evaluated by experiment. The mechanical properties of the cured blend resin is the best when rn ( epoxy resin 6002 ) : m ( reactive polyurethane) is 50: 50.