【作者】 孙晓然； 陈静；

【Author】 Sun Xiaoran,Chen Jing (College of Chemical Engineering and Biology Technology,Hebei Polytechnic University,Tangshan,063009)

【机构】 河北理工大学化工与生物技术学院；

【摘要】 以腐植酸钠(NaHA)、丙烯酸(AA)为原料,过硫酸铵(APS)为引发剂,N,N′-亚甲基双丙烯酰胺(NNMBA)为交联剂,采用溶液聚合法合成了一种新型保湿煤尘抑制剂腐植酸钠-丙烯酸(HASD),并用煤尘耐蒸发量表示树脂的保湿抑尘性能。考察了原料配比、引发剂和交联剂用量、反应温度、反应时间对煤尘耐蒸发量的影响。结果表明,当NaHA、APS和NNMBA分别占从质量比60%、0.9%、1 2%且反应温度70℃、反应时间2.5h时,所得树脂使煤尘具有良好耐蒸发性。当HASD树脂水溶液的浓度为1.6%时,喷洒到煤尘试样表面上,60℃恒温10h后其蒸发量为1.91kg/m~2,与喷洒自来水相比蒸发量减少了22.5%,保湿抑尘效果明显。更多还原

【Abstract】 A new moisture-retention coal dust suppressant,poly(sodium humate-co-acrylic acid)(HASD)was synthesized by solution polymerization.The factors that influenced the moisture-retention property of the aim samples were investigated,which was characterized by anti-evaporation test.The optimum conditions were obtained as follows:the mass ratios of sodium humate(NaHA)to acrylic acid(AA),initiator[denoted with ammonium pursulfate(ASP)]to AA, and crosslinker[denoted with N.N’—methyl bisacrylamide(NNMBA)]to AA were 60%,0.9%,1.2%,respectively,and the reaction temperrature was 70℃,reaction time was 2.5h.The evaporation of coal dust surface is 1.91kg/m2 at 60℃after the solution containing 1.6%HASD prepared at the above conditions was sprayed on it for 10h.Compared with pure tape water,the evaporation decreases 22.5%,and the excellet dust suppression effect could be shown by HASD.更多还原