黄土的改性及其在建筑涂料中的应用研究  

Study on the Modification of Loess and Its Application in Architectural Coatings

作　　者：胡浩斌[1] 韩明虎[1] 芦娅妮 张琪 曹强 张腊腊[1] 武芸[1] 胡乐乐 Hu Haobin;Han Minghu;Lu Yani;Zhang Qi;Cao Qiang;Zhang Lala;Wu Yun;Hu Lele(College of Chemistry&Chemical Engineering,Longdong University,Qingyang,Gansu 745000,China;Department of Energy and Chemical Engineering,Qingyang Vocational Technical College,Qingyang,Gansu 745000,China)

机构地区：[1]陇东学院化学化工学院,甘肃庆阳745000 [2]庆阳职业技术学院能源化工系,甘肃庆阳745000

出　　处：《涂料工业》2020年第7期64-71,共8页Paint & Coatings Industry

基　　金：甘肃省高等学校科研创新团队项目(2018C-22);甘肃省科技重点研发计划项目(18YF1GA055)。

摘　　要：将天然黄土进行改性制备有机黄土,在改性工艺优化、结构表征、性能测试的基础上,进一步评价其对乳胶漆性能的影响。结果表明:天然黄土经提纯、NaF充分钠化后,再在矿浆浓度为6%、十八烷基三甲基氯化铵(1831)用量为35%、矿浆pH=7~8、搅拌速率为500 r/min、反应温度为75℃、反应时间为3.0 h的最佳条件下,可制得性能优良的有机黄土,其黏度可达到3840 mPa·s。将有机黄土按4%的量加入到市售乳胶漆中,乳胶漆的黏度、耐溶剂性、耐磨性、耐冲击性分别提高了143%、60%、70%、96%,性能指标符合GB/T 9756—2009要求。Organic loess was prepared by modification of natural loess,and its effect on the performance of latex paint was further evaluated on the basis of modification process optimization,structure characterization and performance test.The results showed that the organic loess with good performance and high viscosity of 3840 mPa·s could be prepared by purification of natural loess,NaF-modification and organic modification.The optimum conditions for organic modification was as follows:loess concentration 6%,octadecyl trimethyl ammonium chloride(1831)35 wt%,loess pH 7-8,stirring speed 500 r/min,reaction temperature 75℃,and reaction time 3.0 h.When the content of organic loess was 4 wt%,the viscosity,solvent resistance,wear resistance and impact resistance of latex paint were improved by 143%、60%、70%and 96%respectively,and the main properties of the prepared latex paint met the specification in GB/T 9756—2009.

关 键 词：黄土 提纯 钠化 有机改性 十八烷基三甲基氯化铵 乳胶漆 

分 类 号：TQ635.5[化学工程—精细化工]