西南交通大学学报 2009, 44(4) 595-599 DOI:     ISSN: 0258-2724 CN: 51-1277/U

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本文关键词相关文章
水化硅酸钙
湿法改性
正交试验
活化指数
吸油值
本文作者相关文章
彭小芹
贺芳
张乐
祈学军
田元艳
PubMed
Article by PENG Xiaoqin
Article by HE Fang
Article by ZHANG Le
Article by QI Xuejun
Article by TIAN Yuanyan

水化硅酸钙超细粉体表面湿法改性

彭小芹1, 贺芳1, 张乐2, 祈学军1, 田元艳1

1. 重庆大学材料科学与工程学院, 重庆, 400045;
2. 同济大学材料科学与工程学院, 上海, 200092

摘要

为改善水化硅酸钙超细粉体与高分子材料基体的相容性,采用4种改性剂对其进行表面湿法改性处理,从中优选了1种改性剂.对优选的改性剂,通过正交试验,研究改性剂用量、浆料浓度、改性温度以及改性时间对超细水化硅酸钙粉体改性的影响.试验所得最佳改性效果:活化指数从0提高到95%,吸油值由86.5 mL/100 g降到69.5 mL/100 g.红外光谱图分析显示,优选的改性剂在水化硅酸钙粉体表面产生了化学吸附,使粉体表面有机化.

关键词 水化硅酸钙   湿法改性   正交试验   活化指数   吸油值  

Wet Surface Modification of Calcium Silicate Hydrate Superfine Powder

PENG Xiaoqin1, HE Fang1, ZHANG Le2, QI Xuejun1, TIAN Yuanyan1

1. College of Material Science and Engineering, Chongqing University, Chongqing 400045, China;
2. College of Material Science and Engineering, Tongji University, Shanghai 200092, China

Abstract:

Four kinds of modifiers were chosen to conduct wet modification experiments for calcium silicate hydrate to improve its compatibility with polymer materials.The modifier with the best modification effect was optimally selected to do orthogonal experiments to investigate the effects of modifier quantity,concentration of calcium silicate hydrate in the slurry,and modification temperature and time on surface modification of calcium silicate hydrate.Under the optimal condition,the active index of the modified product increased from 0 to 95%,and the oil absorption value decreased from 86.5 mL/100 g to 69.5 mL/100 g.Infrared analysis shows that chemical adsorption of the optimally selected modifier happens on the surfaces of the calcium silicate hydrate powders,resulting in their organization.

Keywords: calcium silicate hydrate   wet surface modification   orthogonal experiment   active index   oil absorption value  
收稿日期 2009-01-13 修回日期  网络版发布日期  
DOI:
基金项目:

重庆市建设委员会资助项目(城科字2007(42))

通讯作者:
作者简介: 彭小芹(1956- ),女,教授,研究方向为无机非金属材料,电话:023-65127292,E-mail:pxq01@cqu,edu.cn

参考文献:
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