862023年第1期（总第165期）改性水玻璃和聚氨酯封堵材料在防灭火中的应用柴卫军（山西煤炭进出口集团左云韩家洼煤业有限公司，山西大同，037000）摘要：为了解决传统水玻璃胶体保水性差、容易开裂、聚氨酯材料聚合固结放热量大导致起火风险大等问题，本文对煤矿防灭火用水玻璃复合胶体灌浆材料进行最佳原料配比研究，分别引入淀粉、纤维素、阴离子聚丙烯酰胺等聚合物添加剂，研究其对保水性和体积收缩比的影响，并优选出复合胶体的最佳组分；开发了一种适用于封堵煤矿井下大型透风裂缝的新型聚氨酯材料，该封堵材料由聚醚403、二苯基甲烷二异氰酸酯、稀释剂、催化剂、交联剂等在室温反应制成。改性水玻璃灌浆和聚氨酯封堵防灭火方案在韩家洼煤矿22402工作面采空区的应用表明，改性封堵材料性能达到设计需求。关键词：改性水玻璃；聚氨酯；封堵材料中图分类号：R943文献标志码：A文章编号：1008-3103（2023）01-0001-04ApplicationofModifiedWaterGlassandPolyurethanePluggingMaterialsinFirePreventionChaiWei-jun（ZuoyunHanjiawaCoalIndustryCo.,Ltd.ofShanxiCoalImportandExportGroup,DatongShanxi037000,China）Abstract：Inordertosolvetheproblemsofpoorwaterretentionpropertyandeasycrackingoftraditionalwaterglasscolloid,aswellashighignitionriskcausedbylargeheatreleasefrompolymerizationandconsolidationofpolyurethanematerials,theoptimalrawmaterialratioofwaterglasscompositecolloidgroutingmaterialforfirepreventionandextinguishmentincoalmineswasstudied.Polymeradditivessuchasstarch,celluloseandanionicpolyacrylamidewereintroducedrespectivelytostudytheireffectsonwaterretentionpropertyandvolumeshrinkageratio,andtheoptimalcomponentofcompositecolloidwasselected;Anewtypeofpolyurethanematerialsuitableforplugginglargeventilationcracksincoalmineshasbeendeveloped.Thepluggingmaterialismadeofpolyether403,diphenylmethanediisocyanate,diluent,catalyst,cross-linkingagent,etc.byreactionatroomtemperature.Theapplicationofmodifiedwaterglassgroutingandpolyurethanepluggingandfirepreventioninthegoafof22402workingfaceofHanjiawaCoalMineshowsthattheperformanceofthemodifiedpluggingmaterialmeetsthedesignrequirements.Keywords：modifiedwaterglass;polyurethane;pluggingmaterial作者...
