| 改性纳米CaCO3复合粒子的制备、表征及性能 |
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| 引用本文： | 杨冬亚,邱凤仙,朱复红,吴冬梅,张勤勤.改性纳米CaCO3复合粒子的制备、表征及性能[J].稀有金属材料与工程,2008,37(Z2):351-354. |
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| 作者姓名： | 杨冬亚 邱凤仙 朱复红 吴冬梅 张勤勤 |
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| 作者单位： | 江苏大学化学化工学院,江苏,镇江,212013 |
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| 摘 要： | 采用含有纳米硅溶胶的纳米碳酸钙悬浮液在超声波处理及加热条件下,硅溶胶发生缩合反应从而沉积在纳米碳酸钙粒子表面的溶胶-凝胶沉淀法,制备出性能稳定的纳米碳酸钙/二氧化硅复合粒子.通过红外光谱(FTIR)、TEM分析、zeta电位测定以及TGA分析,表征了硅溶胶与纳米CaCO3粒子之间的杂化作用,研究了改性纳米CaCO3复合粒子水分散液的稳定性和粒径、两种纳米粒子之间的包覆作用、杂化作用以及改性后纳米CaCO3复合粒子的热稳定性.同时研究发现,改性后的无机纳米CaCO3复合粒子在聚氨酯脲水分散液中具有很好的分散性.
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| 关 键 词： | 硅溶胶 纳米CaCO3 水性聚氨酯 杂化水分散液 力学性能 silica sol nano caco3 polyurethanurea hybrid aqueous dispersions mechanical properties 改性纳米 复合粒子 表征 性能 Property Study Silica Sol Modified Nano Characterization result good dispersity dispersion mechanical properties films solid content dispersing covering |
| 文章编号： | 1002-185X(2008)S2-351-04 |
| 修稿时间： | 2007年11月22 |
Preparation and Characterization of Nano CaCO3 Modified with Silica Sol and Study of Its Property |
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| Yang Dongya,Qiu Fengxian,Zhu Fuhong,Wu Dongmei,Zhang Qinqin.Preparation and Characterization of Nano CaCO3 Modified with Silica Sol and Study of Its Property[J].Rare Metal Materials and Engineering,2008,37(Z2):351-354. |
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| Authors: | Yang Dongya Qiu Fengxian Zhu Fuhong Wu Dongmei Zhang Qinqin |
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| Abstract: | The stable nano silica sol modified llano CaCO3 aqueous dispersion was prepared by means of sol-gel method with the treatment of ultrasonic.The FTIR,TEM,Zeta potential and TGA were used to analyze the hybrid effect of nano silica sol and nano CaCO3.The stability and particle size of the modified nano CaCO3 aqueous dispersion were studied,the covering effect between the two nano particles and the heat resistance of the modified nano CaCO3 were measured.Meanwhile,the polyurethanurea(PUU)/modified nano CaCO3 hybrid aqueous dispersion with solid content of 30%was prepared by in-situ dispersing PUU with the modified nano CaCO3 aqueous dispersion.The result showed that the modified nano CaCO3 possessed good dispersity in the hybrid PUU dispersion and the mechanical properties of the PUU films were enhanced appreciably with the hybrid of the modified nano CaCO3. |
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| Keywords: | silica sol nano caco3 polyurethanurea hybrid aqueous dispersions mechanical properties |
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