CAJ | 학술논문

以1,6-六亚甲基二异氰酸酯(HDI)为硬段,聚碳酸酯二元醇(PCDL)为软段,赖氨酸乙酯盐酸盐(Lys-OEt)为扩链剂合成了一种新型聚碳酸酯型聚氨酯弹性体,并制成聚氨酯膜,在不同温度和时间下对聚氨酯进行退火热处理.采用FT-IR、~1H-NMR对聚氨酯进行结构分析;热处理前后,通过AFM、XRD和力学测试仪对聚氨酯进行性能测试.结果表明:热处理使赖氨酸乙酯扩链聚氨酯微相分离的程度变大,结晶性能更好,力学性能提高,弹性回复率增大.
이1,6-륙아갑기이이청산지(HDI)위경단,취탄산지이원순(PCDL)위연단,뢰안산을지염산염(Lys-OEt)위확련제합성료일충신형취탄산지형취안지탄성체,병제성취안지막,재불동온도화시간하대취안지진행퇴화열처리.채용FT-IR、~1H-NMR대취안지진행결구분석;열처리전후,통과AFM、XRD화역학측시의대취안지진행성능측시.결과표명:열처리사뢰안산을지확련취안지미상분리적정도변대,결정성능경호,역학성능제고,탄성회복솔증대.
A set late-model polycarbonate-based polyurethane were prepolymerized by 1, 6-hexamethylene diisocya-nate and polycarbonate diol, and they were chain-extended by lysine ethyl ester(Lys-OEt). Then the polyurethane were make into films. Under different temperature and time condition , the polyurethane films were dealed with thermal annea-ling. The polyurethanes' configuration were analysed by FT-IR, ~1H-NMR, and tested properties by AFM, XRD and me-chanics testing instrument after thermal disposing. The results showed that the weenie configuration separateion degree en-hanced, crystal property was better, mechanics property heightened and elastic recovery percentage increased after the pol-yurethane chain-extended by Lys-OEt dealed with thermal annealing.