水化硅酸钙超细粉体表面湿法改性

彭小芹; 贺芳; 张乐; 祈学军; 田元艳

水化硅酸钙超细粉体表面湿法改性

基金项目:

重庆市建设委员会资助项目(城科字2007(42))

详细信息

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

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出版历程
- 收稿日期: 2009-01-13

Wet Surface Modification of Calcium Silicate Hydrate Superfine Powder

摘要

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.
- 水化硅酸钙 /
- 湿法改性 /
- 正交试验 /
- 活化指数 /
- 吸油值
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.
- calcium silicate hydrate /
- wet surface modification /
- orthogonal experiment /
- active index /
- oil absorption value

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参考文献(1)

彭小芹,赵会星,杨巧,等.水化硅酸钙粉体补强橡胶的性能[J].高分子材料科学与工程,2008,24(8):90.PENG Xiaoqin,ZHAO Huixing,YANG Qiao,et al.Performance of rubber filled with hydrated calcium silicate powder[J].Polymer Materials Science and Engineering,2008,24(8):90-91.[2] 郑水林.粉体表面改性[M].北京:中国建材工业出版社,2003:1-33,65-256.[3] 王训遒,李九菊,蒋登高.铝酸酯偶联剂改性纳米碳酸钙的工艺研究[J].无机盐工业,2005,37(3):26.WANG Xunqiu,LI Jiuju,JIANG Denggao.Study on process of surface modification of nanometer calcium carbonate with aluminate coupling agent[J].Inorganic Chemicals Industry,2005,37(3):26.[4] 彭小芹,何丽娟,刘艳萌.水热法制备水化硅酸钙纳米粉体[J].重庆大学学报,2005,28(5):59-62.PENG Xiaoqin,HE Lijuan,LIU Yanmeng.Hydrated calcium silicate with nm-order size manufactured by using dynamic autoclaved technology[J].Chongqing University,2005,28(5):59-62.[5] 中国石油和化学工业协会.GB/T 19281-2003碳酸钙分析方法[S].北京:中国标准出版社,2003.[6] 汤爱萍,吴满芳,郑典模.碳酸钙改性研究[J].江西化工,2003(1):65.TANG Aipin,WU Manfang,ZHENG Dianmo.Study on calcium carbonate modification[J].Jinangxi Chemical Indastry,2003(1):65.[7] 周斌,李玉梅,志賀聖一.神经网络内燃机排放模型学习样本的选定[J].西南交通大学学报,2002,37(6):661.ZHOU Bin,LI Yumei,SHIGA S.Selection of the learning samples of neural networks for internal-combustion engine emission[J].Journal of Southwest Jiaotong University,2002,37(6):661.[8] 王训遒,周铭,蒋登高.复合偶联剂改性纳米CaCO3工艺研究[J].化工矿物与加工,2005(4):9-12.WANG Xunqiu,ZHOU Ming,JIANG Denggao.Study on process of surface modification of nanometer calcium carbonate with compound coupling agent[J].Industrial Minerals Processing,2005(4):9-12.[9] 杨南如,岳文海.无机非金属材料图谱手册[M].武汉:武汉工业大学出版社,2000:337.[10] 侯云芬.水热合成C-S-H凝胶所用硅质原料的特性研究[J].硅酸盐学报,2000,28(2):114-115.HOU Yunfen.Study on characteristics of siliceous materials used in the synthesis of C-S-H gel[J].Journal of the Chinese Ceramic Society,2000,28(2):114-115.

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文章访问数: 1418
HTML全文浏览量: 58
PDF下载量: 48
被引次数: 0