CAJ | 학술논문

以十八烷基三甲基溴化铵(OTAB)作插层剂,采用阳离子交换法对蒙脱土进行有机改性.用单因素实验轮换法考察固液比、配料比、时间、温度及pH值等条件对改性效果的影响,确定最佳实验条件.同时借助XRD、热失重及红外光谱对有机土的结构和性能进行了表征.实验表明,在最佳实验条件下,OTAB分子插入到了蒙脱土片层间,使层间距从1.081nm增大到2.025nm.在与环氧树脂基体复合后,d001衍射峰消失,表明有机土被充分剥离,与环氧具有很好的相容性.
이십팔완기삼갑기추화안(OTAB)작삽층제,채용양리자교환법대몽탈토진행유궤개성.용단인소실험륜환법고찰고액비、배료비、시간、온도급pH치등조건대개성효과적영향,학정최가실험조건.동시차조XRD、열실중급홍외광보대유궤토적결구화성능진행료표정.실험표명,재최가실험조건하,OTAB분자삽입도료몽탈토편층간,사층간거종1.081nm증대도2.025nm.재여배양수지기체복합후,d001연사봉소실,표명유궤토피충분박리,여배양구유흔호적상용성.
Na-montmorillonite is organic modified by cation exchange on clay surface by using octadecyl trimethyl ammonium bromide(OTAB) as intercalation agent.Single factor rotational experiment is used to inspect the ratio of solid to liquid,the ingredients,time,temperature and pH value on the impact of modification effect and determin the optimum conditions.The structure and performance of organic soil are analyzed by XRD,TG and FTIR.Experiments show that organic intercalation agent OTAB inserting into the space between the silicate layers under the optimum condition expands the distance between the silicate layers from 1.081nm to 2.025nm.The d001 peak of the organic montmorillonite disappears after polymerizing with expoxy resin,indicating that organic modified montmorillonite is completely exfoliated in the epoxy matrix,the organic modified montmorillonite is be of a good compatibility with epoxy.