煤矿安全2024，Vol.55Issue(1)：116-125,10.DOI:10.13347/j.cnki.mkaq.20230329
矿用有机增韧泡沫的制备及性能研究
Study on preparation and properties of organic toughened foam for mining
摘要
Abstract
In order to enhance the toughness of mining polymer foam,polyethylene glycol(PEG),an organic material,was added to modify the toughening effect of foam.The effect of PEG modification with different molecular weight was studied by scanning elec-tron microscope,thermogravimetric test,oxygen index test,cone calorimetric test,compressive strength test,foaming and curing time test.The results show that:PEG with different molecular weight can effectively increase the compressive strength of phenolic resin foam and reduce its pulverization rate.When the molecular weight of PEG is 1 000,the addition of 6%has the best toughening effect,the compressive strength reaches 0.155 MPa,and the pulverization rate decreases to 1.3%.Adding a certain amount of PEG can effectively increase the foaming ratio of phenolic resin,but at the same time,it will increase the shrinkage and curing time of its foam.The pore structure of PEG modified phenolic resin foam is more uniform,and the pore size of foam is also more uniform,mainly because the PEG that does not react with the phenolic resin plays the role of surfactant,and can better mix the curing agent with the resin.Compared with the thermal stability of phenolic resin foam with different PEG molecular weight,the larger the mo-lecular weight,the worse the thermal stability of phenolic resin foam with more PEG molecular weight.关键词
矿井通风/高分子泡沫/堵漏风/防灭火/酚醛树脂/聚乙二醇/固化剂/增韧Key words
mine ventilation/polymer foam/plugging air leakage/fire preventing and extinguishing/phenolic resin/polyethylene glycol/curing agent/toughening分类
矿业与冶金引用本文复制引用
杜建华,李业,孙超,刘铭,祝富盛..矿用有机增韧泡沫的制备及性能研究[J].煤矿安全,2024,55(1):116-125,10.基金项目
"十三五"国家重点研发计划资助项目(2018YFC0807900) （2018YFC0807900）
