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Citation: Chen Tonghui, Guan Yunlin, Ji Junhui, Que Guohua, Gao Yue, Bai Yaowen. Study on Polypropylene Glycol Polyurethane Modified by Polyhexylene Carbonate Diol[J]. Chinese Journal of Applied Chemistry, ;1996, 13(3): 12-15. shu

Study on Polypropylene Glycol Polyurethane Modified by Polyhexylene Carbonate Diol

1.
Department of Applied Chemistry, Tianjin University, Tianjin 300072

Received Date: 13 November 1995
Available Online: 9 February 1996

The polypropylene glycol polyurethane modified by polyhexylene carbonate diol (HPPU)was synthesized from polyhexylene carbonate diol(PHCD),polypropylene glycol (PPG),4,4'-diphenylmethane diisocyanate(MDI)and 1,4-butylene diol(BDO)by one-step technique.Its IR speetra,mechanical properties,resistance to hydrolysis and rheological behavior were studied.The results show that both the tensile strength and tensile stress at 100% and 300% strain increase with increasing content of PHCD in soft segment.When PHCD content in soft segment is 51.29%,the tensile strength increases to 150% of that of the non-modified PU.After dipping in water at 40℃ for 42 days,the retention of tensile strength is no less than 84%.
- polyhexylene carbonate diol,
- polypropylene glycol,
- polyurethane,
- modification
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