摘要
以新疆地产风化煤为原料,通过硝酸氧解工艺制得黄腐植酸,并对黄腐植酸进行季铵化改性,合成了黄腐植酸季铵盐。通过超声波辐照法制备黄腐植酸季铵盐插层皂石,并以其为助剂制备了聚乙烯醇/黄腐植酸季铵盐插层皂石纳米复合材料。采用FTIR对黄腐植酸及黄腐植酸季铵盐进行结构表征,并通过XRD、TG、DSC和力学性能测试对聚乙烯醇/黄腐植酸季铵盐插层皂石纳米复合材料的结构和性能进行表征。结果表明:经硝酸氧解后,黄腐植酸羧基含量增加;黄腐植酸季铵盐插层皂石在聚乙烯醇基体中呈现剥离状态;加入1%黄腐植酸季铵盐插层皂石后,聚乙烯醇复合材料的最大拉伸强度达到34.36 MPa,比纯聚乙烯醇提高了60.86%,而且其热稳定性明显提高。
The fulvic acid was prepared with weathered coal from Xinjiang and nitric acid, and then quaternary fulvic acid was synthesized. By the method of ultrasonic radiation, the quaternary fulvic acid intercalated saponite was prepared, moreover, PVA/quaternary fulvic acid intercalated saponite nanocomposites was prepared by solution-intercalation. The structures of fulvic acid were characterized by FTIR, and its structure and properties of PVA/quaternary fulvic acid intercalated saponite nanocomposites were studied by XRD, TG, DSC and mechanical properties. The results show that carboxyl content of fulivc acid increases through oxidized with nitric acid, and XRD analysis suggests that the quaternary fulvic acid intercalated saponite has been exfoliated into PVA matrix. The mechanical properties and thermal analysis shows that the maximum tensile strength of PVA based nanocomposites reaches to 34.36 MPa when adding 1% quaternary fulvic acid intercalated saponite, which increases by 60.86% compared with that of pure PVA, moreover, thermal stability of PVA based nanocomposites improves obviously.
出处
《塑料科技》
CAS
北大核心
2015年第2期54-59,共6页
Plastics Science and Technology
基金
新疆兵团八师石河子市科技计划课题(2013QY17)
