Studies on FTIR On-Line Following of Reaction Injection Molding of Poly(urethane urea)s

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (10): 1650.

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Studies on FTIR On-Line Following of Reaction Injection Molding of Poly(urethane urea)s

LUO Ning, PAN Zhao-Qi, WANG De-Ning, YING Sheng-Kang

Institute of Material Sci. and Eng., East China Univ.of Science and Technology, Shanghai, 200237

Received:1994-10-26 Revised:1995-04-13 Online:1995-10-24 Published:1995-10-24

Abstract

Abstract: On-line following of reaction injection molding(RIM)of poly(urethane urea) s,which finished within several seconds, has been carried out by a 5SX FTIR. A mini-RIM machine and a single reflector for infrared sampling which were made in our laboratory were used successfully in the experiments. There is a very strong tendency of phase separation during RIMpolymerization of poly(urethane urea)s.Although there was not a marked effect of dibutyltin dilaurate concentration on overall rate of polymerization, the effect was intense on phase separation and hydrogen bonding of RIMpoly(urethane urea)s.

Key words: Poly(urethane urea), IR, Reaction injection molding, Kinetics, Phase separation

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LUO Ning, PAN Zhao-Qi, WANG De-Ning, YING Sheng-Kang . Studies on FTIR On-Line Following of Reaction Injection Molding of Poly(urethane urea)s[J]. Chem. J. Chinese Universities, 1995, 16(10): 1650.

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Studies on FTIR On-Line Following of Reaction Injection Molding of Poly(urethane urea)s

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