防治煤矿有毒有害气体泄漏的密封剂主要性能实验研究

本文对防治煤矿有毒有害气体泄漏的密封剂——硬质聚氨酯泡沫材料做了探索性研究,通过正交实验法和单因素实验法进行38组实验,得到组分配比,制备出聚氨酯泡沫材料,并对其主要性能做了进一步测定。实验结果表明,该密封材料可以满足煤矿生产条件下所要求的力学性能和较高的粘结性能,并且具有发泡迅速、发泡倍数高、泡沫尺寸稳定等特点,可很好地应用于煤矿有毒有害气体泄漏的防治。

Experimental Res earch on Major Properties of the Sealant to Control Toxic and Harmful Gases Leakage in Coalmine

In this paper, exploratory research is done on polyurethane foam which prevents toxic and harmful gases leaking from coalmine.We made 38 groups of experiments with the orthogonal experimental method and single-factor experiment method, from which the optimal ingredient ratio is obtained.Polyurethane foam is prepared and its major properties is evaluated.The results show that sealant can meet the requirements of me-chanical properties and high cohesive property under the conditions of coalmines and also has the properties of foaming rapidly, high expansion foaming, dimensional stability, etc, which can be applied well in the preven-tion and control of toxic and harmful gases leakage in coalmine.