Experimental Res earch on Major Properties of the Sealant to Control Toxic and Harmful Gases Leakage in Coalmine
LI Ji
SONG Fu-mei
KANG Huai-yu
Abstract：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.
Keywords：rigid polyurethane foamtoxic and harmful gases leakagemajor propertiesexperimental measure
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 6-10 )