聚氨酯弹性体结构对热行为的影响

EFFECTS OF THE STRUCTURE OF POLYURETHANE ELASTOMERS ON THEIR HEAT BEHAVIORS

指出影响聚氨酯弹性体热行为的结构因素主要是软段的种类、取代基和分子量,以及硬段的扩链剂和二异氰酸酯的种类与浓度。讨论了这些结构因素对聚氨酯弹性体玻璃化温度、结晶熔融温度、熔融热、比热和绝热温升的影响。

This review, cited with 17 references, referred to the major structural factors that affect the heat behaviors of polyurethane elastomers , i.e., the type, molecular weight and substituents of soft segments, as well as the type and concentration of chain extender and diisocyanates for the hard segments. The effects of these factors on the glass transition temperature, the temperature and heat of crystalline melting , the specific heat and adiabatic temperature rising were discussed.