CAJ | 학술논문

采用有机酸改性的方法制备剥离型葡萄糖酸蒙脱石纳米带。考察了原料分散方法、提纯部位、助分散剂类型和剪切速率对蒙脱石纳米带长度的影响，并进行了产品应用探索。结果表明：膨润土矿采用湿法分散，沉降提纯时取中层部分为原料，剥离过程添加丙三醇作为助分散剂并在剪切速率为20.94 s?1时，剥离得到的蒙脱石纳米带长度较长。扫描电镜表明：制得的蒙脱石纳米带，长25~70μm，宽1~2μm，厚度<100 nm。在原料预处理及改性加工过程中进行机械粉碎操作会折断蒙脱石纳米带。剥离过程的作用力有内部反应的推力及外部溶剂的拉力，均匀及合适的推、拉力可避免蒙脱石纳米带的折断。将平均长度为36μm的长蒙脱石纳米带用于改性 CMC水溶液和 PVA薄膜，结果表明：CMC水溶液的黏度提高了26.7%，PVA薄膜的断裂伸长率提高了28.6%，改性效果明显好于长度为5μm的短蒙脱石纳米带改性效果。
채용유궤산개성적방법제비박리형포도당산몽탈석납미대。고찰료원료분산방법、제순부위、조분산제류형화전절속솔대몽탈석납미대장도적영향，병진행료산품응용탐색。결과표명：팽윤토광채용습법분산，침강제순시취중층부분위원료，박리과정첨가병삼순작위조분산제병재전절속솔위20.94 s?1시，박리득도적몽탈석납미대장도교장。소묘전경표명：제득적몽탈석납미대，장25~70μm，관1~2μm，후도<100 nm。재원료예처리급개성가공과정중진행궤계분쇄조작회절단몽탈석납미대。박리과정적작용력유내부반응적추력급외부용제적랍력，균균급합괄적추、랍력가피면몽탈석납미대적절단。장평균장도위36μm적장몽탈석납미대용우개성 CMC수용액화 PVA박막，결과표명：CMC수용액적점도제고료26.7%，PVA박막적단렬신장솔제고료28.6%，개성효과명현호우장도위5μm적단몽탈석납미대개성효과。
Exfoliated gluconic acid montmorillonite nanobelts were prepared via an organic acid modification method. The effects of dispersion methods and purification sites of raw materials, the secondary dispersant species and shear rate on the length of montmorillonite nanobelts were investigated. In addition, the application of products ware also explored. The results show that longer stripped montmorillonite nanobelts can be obtained when the following process is employed: disperse bentonite with a wet method; use the middle part of the suspension as a raw material; use glycerol as a secondary dispersant and apply a shear rate of 20.94 s?1 . SEM results demonstrate that montmorillonite nanobelts prepared are 25~70 μm in length, 1~2μm in width,and less than 100 nm in thickness. Mechanical grinding during pretreatment and modification can break the montmorillonite nanobelts. A push force from the internal reaction and a pull force from solvents exist in the preparation process and balanced forces can prevent montmorillonite nanobelts from breaking. Add montmorillonite nanobelts with average length of 36μm in aqueous solution of CMC and PVA film can increase the CMC solution viscosity by 26.7% and increase the PVA film elongation rate by 28.6%, which were both better than that of adding short montmorillonite nanobelts with average length of 5μm.