异氰酸酯基材料固化时间控制研究及在伤员固定转运器械中的应用

Study on Curing Time Controlling of Materials Based on Isocyanate and Its Application in Transmitting Apparatus for the Wounded

目的:研究异氰酸酯基材料固化时间控制方法,以完善基于此材料的伤员固定转运器械的制作方法和操作规程。方法:根据化学反应速度的控制原理,实验探索催化剂、环境温度、材料混合程度和材料的体积等因素对固化时间的影响。结果:通过实验,极限环境温度几乎不影响异氰酸酯基材料固化时间,材料的混合程度和催化剂的剂量仅影响材料的初始反应时间,材料的体积是影响异氰酸酯基材料固化时间的决定因素。结论:通过实验研究,异氰酸酯基材料固化时间受环境温度、材料的混合程度以及催化剂的剂量影响不明显,与材料的体积关系非常密切。异氰酸酯基材料的固化特性,使得该材料非常适宜于制作野战或现场伤员固定转运器械。

Objective To study controlling method for curing time of the materials based on isocyanate, and perfect making means and operating rules of transmitting apparatus for the wounded. Methods According to the controlling principles of the rate of chemical reaction, the influencing factors were studied such as catalyzer, ambient temperature, mixture level of materials and materials volume by experiment. Rsults By the results of experiments, ambient temperature hasn＇t an effect or impact on curing time of isoeyanate, catalyzer and mixture level of materials only have a little effect or impact on initial reaction time, but materials volume is an important factor of all. Conclusion By the means of experiments, the curing time of isocyanate is only influenced by the volume of materials, and the character is very useful to transmitting apparatus for the wounded in field battle or on-site emergency rescue.