PDF (1316K)
摘要
以4,4′-二苯基甲烷二异氰酸酯(MDI)、1,4-丁二醇(BDO)、聚己内酯二元醇(PCL)、聚四氢呋喃聚醚(PTMG)、聚己二酸新戊二醇酯(PNA)为原料,采用预聚体法合成了一系列热塑性聚氨酯(TPU)。研究了不同多元醇、异氰酸酯指数(R)、硬段含量对TPU力学性能及热性能的影响。结果表明:聚己内酯型TPU的力学性能更均衡;R值为0.99,硬段质量分数为40%时合成的TPU力学性能最佳;以PCL为软段合成的TPU玻璃化转变温度居中;随着R值的增大,TPU材料的玻璃化转变温度逐渐升高。
Abstract
By prepolymer method,a series of thermoplastic polyurethane were synthesized with MDI,BDO,PCL,PTMG and PNA.The effect of different polyols,R-value and hard segment content (Ch) on the mechanical and thermal properties of TPU were studied.The results showed that when using PCL as the raw material,the mechanical property was more equilibrium.When R-value was 0.99 and hard segment content was 40%,the mechanical property was the best.When using PCL as the raw material,the glass transition temperature was in the middle of the three.When R-value was bigger,the glass transition temperature was higher.
关键词
热塑性聚氨酯
/
异氰酸酯指数
/
硬段含量
/
力学性能
Key words
thermoplastic polyurethane
/
isocyanate index
/
hard segment content
/
mechanical property
PCL型热塑性聚氨酯的合成及性能研究[J].
化工新型材料, 2018, 46(10): 153-155 DOI:
[1] 艾青松,常浩,方心灵,等.热塑性聚氨酯弹性体的合成及其性能表征[J].中国材料科技与设备,2014(6):11-14.
[2] 韩海军,丁雪佳,张丽娟,等.热塑性聚氨酯弹性体力学性能和流变性能的研究[J].塑料工业,2010,38(s2):109-112.
[3] 李东红,白静静,李振中.软段对热塑性聚氨酯弹性体结构及性能的影响[J].山西化工,2014,34(1):10-12.
[4] 李宗景,易玉华.软段结构对MDI型TPU力学性能和动态黏弹性能的影响[J].聚氨酯工业,2016,31(4):6-8.
[5] 陆波,张文婧,李鹏.聚醚/聚酯型热塑性聚氨酯弹性体的合成研究[J].辽宁化工,2013,42(9):1031-1033.
[6] 张敏,夏青,王昊,等.聚醚型与聚酯型聚氨酯弹性体的性能研究[J].塑料工业,2013,41(2):87-89.
[7] 刘听,马猛,罗骁,等.聚己内酯二醇及其聚氨酯弹性体的合成和性能研究[J].聚氨酯工业,2015,30(5):10-13.
