叶蜡石粉体的偶联活化改性研究

材料工程, 2010, (5): 88-91. doi: 10.3969/j.issn.1001-4381.2010.05.019

叶蜡石粉体的偶联活化改性研究

刘海涛 ^1, , 吴春莲 ^2, , 张景峰 ^3, , 林实俄 ^4, , 翁学军 ^5, , 盛振红 ^6,

1.温州大学,化学与材料工程学院,浙江,温州,325035

2.温州大学,化学与材料工程学院,浙江,温州,325035

3.温州大学,化学与材料工程学院,浙江,温州,325035

4.温州泰顺聚合物研究所,浙江,温州,325500

5.温州白云橡胶厂,浙江,温州,325500

6.烟台佳隆纳米产业有限公司,山东,烟台,265500

基金项目: 浙江省重大科技专项资金资助项目(2007C11104)

关键词：偶联剂 , 叶蜡石 , 活化改性 , 表征

Coupling Activation Modification for Pyrophyllite Powder

本工作对叶蜡石进行了偶联活化改性研究,使得叶蜡石从亲水性粉体转变为憎水性粉体.在本研究中,叶蜡石粉体通过在表面偶联一层N-(正丁基)-3-氨丙基三甲氧基硅烷(BAPTS)偶联剂进行活化处理,研制出活化指数达到100%的改性叶蜡石粉体.通过活化指数、黏度、表面接触角等手段,对叶蜡石表面偶联改性情况进行了表征,并对活化机理进行了分析讨论.研究了活化指数、黏度、表面接触角与偶联性能之间的关系.结果表明:偶联剂的添加量为1.0%(质量分数,下同)时,活化指数达到100%.偶联剂添加量为1.5%时,改性叶蜡石-液体石蜡体系的黏度达到最大值85 78mPa·s.偶联剂的添加量为2.0% 时,对水的表面接触角达到最大值75°.偶联修饰是制备活化叶蜡石粉体的一种有效方法,能够使偶联剂与叶蜡石粉体形成牢固结合.

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