在采用高真空两级薄膜蒸发分离甲苯二异氰酸酯（TDI）-三羟甲基丙烷（TMP）聚氨酯固化剂中游离TDI的实验研究基础上，进行了中试研究。

The free toluene diisocyanate(TDI) in the curing agent TDI-TMP(Trimethylol Propane) of polyurethane was separated in laboratory by means of high-vacuum two-stage thin-film evaporation.

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六亚甲基二异氰酸酯(HMDI)可用在预聚物中代替甲苯二异氰酸酯〔tdi〕。

Hexamethylene diisocyanate (HMDI) may be used in prepolymer, in place of TDI.

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六亚甲基二异氰酸酯(HMDI)可用在预聚物中代替甲苯二异氰酸酯〔tdi〕。

Hexamethylene diisocyanate (HMDI) may be used in prepolymer, in place of TDI.

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