化工学报2026，Vol.77Issue(2)：985-997,封4,14.DOI:10.11949/0438-1157.20250666
魔芋胶基凝胶泡沫制备与抑制煤自燃的实验研究
Experimental study on the preparation of gel foam based konjac gum and inhibition of coal spontaneous combustion
摘要
Abstract
Spontaneous combustion of coal during mining and utilization has always been a safety concern in the industry.Therefore,the development of efficient and environmentally friendly new materials for preventing and controlling coal spontaneous combustion is urgently needed.Based on the team's preliminary research,a scheme was proposed to prepare the gel foam based konjac gum by using sodium dodecyl sulfate(SDS),fatty alcohol polyoxyethylene ether sulfate sodium(AES),and lauryl amine propyl betaine(CHX)as the composite foaming system,the konjac gum(KGM)and xanthan gum(XG)as the gelation system,and aluminum citrate(Alcit)as the cross-linking agent.Then the surface tension,foaming height,stability coefficient and so on of the gel foam with different compounding systems were tested.The optimal ratio of the gel foam based konjac gum was obtained based on the range analysis method,which was SDS concentration of 0.05%,AES of 0.05%,CHX of 1%,the gel of 0.5%(KGM-XG mass ratio 4∶1),and Alcit of 0.20%.Through thermogravimetric analysis and scanning electron microscopy tests,it was found that the dry cracking temperature,ignition temperature,and burnout temperature of the inhibited coal sample increased by 42,30 and 37℃respectively,the residual mass loss after the reaction decreased by 88.1%,the activation energy increased by 15.1%.The gel foam based konjac gum has the excellent film-forming property and the dense three-dimensional network structure,which has an inhibitory effect on coal spontaneous combustion from the aspects of oxygen isolation in the liquid film,water retention and cooling,leakage prevention and oxygen exclusion and chemical inhibition.关键词
凝胶泡沫/魔芋胶/最佳配比/煤自燃/特征温度/抑制机理Key words
gel foam/konjac gum/the optimal ratio/coal spontaneous combustion/characteristic temperature/inhibition mechanism分类
资源环境引用本文复制引用
贾海林,邹茜,杨光东,冯雪莉,贺鹏程,张英,焦云云..魔芋胶基凝胶泡沫制备与抑制煤自燃的实验研究[J].化工学报,2026,77(2):985-997,封4,14.基金项目
国家自然科学基金项目(52274185) （52274185）
国家重点研发计划项目(2018YFC0807900) （2018YFC0807900）
