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Citation: Luo Shanguo, Zhang Jianguo, Wu Yijie, Tan Huimin, Man Guanglei. Effects of Additives on the Thermooxidation of Ethylene Oxide/Tetrahydrofuran(EO/THF) Copolyether urethane[J]. Chinese Journal of Applied Chemistry, ;1999, 16(5): 33-36. shu

Effects of Additives on the Thermooxidation of Ethylene Oxide/Tetrahydrofuran(EO/THF) Copolyether urethane

1.
a Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022;
2.
b School of Chemical Engineering and Materials Science, Beijing University of Science and Technology, Beijing

Received Date: 18 January 1999
Available Online: 14 May 1999
Fund Project: 国家"863"计划基金资助课题(863-715-19-01-01) (863-715-19-01-01)

The effects of plasticizer, curing agent, antioxidant as well as glycol structure on the thermooxidation of EO/THF copolyether urethane have been investigated by FT-IR and NMR techniques. It is found that plasticizer dibutyl phthalate(DBP) has some stabilizing effect on the polyether urethane, but not on the degradation mechanism. Dibutyltin dilaurate(DBTDL) and triphenyl bismuth(TPB) show striking different behavior towords the thermooxidatin of polyurethane. Being plasticized with DBP, polyurethane with PEG as soft segments is more susceptible to thermooxidation than that with EO/THF copolymer, whereas the polyurethane plasticized with nitrate esters is less sensitive to thermooxidation.
- polyether-urethane,
- thermooxidationi,
- additive
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