Mining wind-leaking-stoppage phenol-urea-formaldehyde foam resin, composite foam and preparation method of composite foam

Abstract

The invention provides a mining wind-leaking-stoppage phenol-urea-formaldehyde foam resin, wherein the raw materials of the mining wind-leaking-stoppage phenol-urea-formaldehyde foam resin include phenol, urea and paraformaldehyde, the molar ratio of phenol to urea to paraformaldehyde is 1:0.5:3. The invention further provides a method for preparing the mine wind-leaking-stoppage composite foam by utilizing the phenol-urea-formaldehyde foam resin. Low-cost foam resin is synthesized, a suitable catalytic system is screened, and the foam resin is modified by utilizing polyethylene glycol, glass fiber and nanometer clay, so that the foam material has high foaming times, and the production cost is low; the foam material has good anti-static electricity performance, fire resistance and thermal stability, is adjustable in the foaming speed in a mining filling process and is suitable for long-distance conveyance; in addition, the foam material has relatively high elasticity and compression strength and strong binding power; foam holes are of closed-hole structures which ensures a good wind-leaking stoppage effect; and the composite foam is very suitable for stopping wind leaking underground a coal mine; the problems of self-combustion of coal, methane accumulation and the like can be effectively prevented.

Description

technical field [0001] The invention relates to the fields of coal mine safety and chemical industry, in particular to a mine plugging wind phenol urea-formaldehyde foaming resin, composite foam and a preparation method thereof. Background technique [0002] In the past ten years, with the introduction of foreign polymer foam production technology and the research and development of domestic foam materials, organic solidified foam plugging technology has been widely used in the field of coal mine safety in my country. At present, the main products of organic solidified foam plugging wind include Rockshine, Malisan, and Agroni, etc. The main application scope includes: filling of various waste lanes, old chambers, coal holes, and cavities; sealing of air leakage channels and goafs, etc. Although there are many organic curing foam products at home and abroad, they are mainly divided into three types according to their chemical composition: polyurethane foam, phenolic foam and...

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