Abstract: Copolymerized polyether-polyurethane elastomers (CEUs) are prepared by a transesterfication polycondensation method with polyethylene glycol (PEG) and polyoxytetramethylene glycol (PTMG) as soft segments,methyl 1,6-hexamethylene-dicarbamate (HDC) as hard segment,dibutyltin dilaurate (DBTDL) as catalyst and 1,4-butanediol (BDO) as chain extender.The effects of materials' ratio,pre-polymerization temperature,pre-polymerization time,polycondensation temperature and polycondensation time on the mechanical properties of as-prepared CEUs are investigated by a series of single factor contrast experiments.The results show that the optimum conditions are as follows:n(PTMG+PEG):n(HDC):n(BDO)=1.0:0.9:0.1,pre-polymerization temperature at 130℃,pre-polymerization time for 45 min,polycondensation temperature at 175℃ and the polycondensation time for 180 min.Under the optimum conditions,the prepared CEUs has a tensile strength at break of 61 MPa,and a breaking elongation of 2 718%.
褚衍倩, 魏永梅, 王涛, 金浩, 田恒水. PEG/PTMG共聚醚型聚氨酯弹性体制备工艺的研究[J]. 现代化工, 2018, 38(7): 132-135,137.
CHU Yan-qian, WEI Yong-mei, WANG Tao, JIN Hao, TIAN Heng-shui. Research on preparation process for PEG/PTMG copolymerized polyether-polyurethane elastomer. Modern Chemical Industry, 2018, 38(7): 132-135,137.
[1] Bagdi K,Molnár K,Kállay M,et al.Quantitative estimation of the strength of specific interactions in polyurethane elastomers and their effect on structure and properties[J].European Polymer Journal,2012,48(11):1854-1865. [2] Rogulska M,Kultys A,Podko Aś1 cielny W.Studies on thermoplastic polyurethanes based on new diphenylethane-derivative diols.Ⅱ.Synthesis and characterization of segmented polyurethanes from HDI and MDI[J].European Polymer Journal,2007,43(4):1402-1414. [3] 张志毅,牛慧军,崔言云.不同异氰酸酯型聚氨酯弹性体的制备与力学性能研究[J].弹性体,2012,22(3):52-55. [4] 张丽.我国聚氨酯产业现状分析及展望(续完)[J].化学工业,2015,33(2):12-22. [5] 纪巍,王鉴,张学佳,等.受阻酚类抗氧剂的复配及发展方向[J].化学工业与工程技术,2007,28(2):34-38. [6] 刘振海.热分析导论[M].北京:化学工业出版社,1991:9-10. [7] Piotr K,Kinga P,Lukasz B.Thermal degradation kinetics of polyurethane-siloxane anionomers[J].Thermochimica Acta,2010,507-508(33):91-98. [8] 杨勇,胡法,高静,等.聚烯烃加工过程中抗氧剂168的作用机理及其对残留量的影响[J].塑料,2012,41(2):109-111. [9] 马剑英,谭志勇,曹春雷,等.抗氧剂对PMMA树脂的热稳定作用[J].中国塑料,2009,23(3):86-89. [10] 刘厚钧.聚氨酯弹性体手册[M].北京:化学工业出版社,2012. [11] 孙利民.聚醚多元醇的现状及发展趋势[J].聚氨酯工业,2006,21(4):11-13. [12] 李春涛,易玉华.PTMG/PPG基CPU的相分离及力学性能研究[J].聚氨酯工业,2017,32(1):9-11. [13] 黄茂松.聚氨酯弹性体国内市场与技术进展浅析[J].化工新型材料,2006,34(1):1-4. [14] Fernández C E,Bermúdez M,Versteegen R M,et al.An overview on 12-polyurethane:synthesis,structure and crystallization[J].European Polymer Journal,2010,46(11):2089-2098. [15] Iwata T,Tsurumaki A,Tajima S,et al.Fixation of ionic liquids into polyether-based polyurethane films to maintain long-term antistatic properties[J].Polymer,2014,55(10):2501-2504. [16] 王鹏,罗建斌,杜民慧.以PEG和PTMG为混合软段的聚氨酯的合成,表征及血液相容性研究[J].生物医学工程学杂志,2005,22(4):734-738. [17] 黄茂松,张骥红.我国聚氨酯产业发展评析[J].聚氨酯工业,2010,25(1):1-5. [18] Kojio K,Kugumiya S,Uchiba Y,et al.The microphase-separated structure of polyurethane bulk and thin films[J].Polymer Journal,2009,41(2):118-124. [19] 高毅,田春蓉,王建华.聚乙二醇对嵌段聚氨酯型固一固相变储能材料的影响及性能分析[J].功能材料,2011,42(B06):446-449. [20] Jia S Y,Ren Y R,Liu L M,et al.Stannous-acetylacetonate:A new catalyst for poly (trimethylene terephthalate) synthesis[J].Chinese Chemical Letters,2007,18(7):827-830. [21] Mishra A K,Chattopadhyay D,Sreedhar B,et al.FT-IR and XPS studies of polyurethane-urea-imide coatings[J].Progress in Organic Coatings,2006,55(3):231-243. [22] Lee H S,Hsu S L.An analysis of phase separation kinetics of model polyurethanes[J].Macromolecules,1989,22(3):1100-1105. [23] 安孟学.塑料橡胶加工助剂[M].北京:化学工业出版社,2002:166-170.
