| 火焰喷涂PA1010/nano-ZrO2复合涂层的非等温结晶动力学 |
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| 引用本文： | 李亚东,马亿珠,强克刚,曹少魁,张治军.火焰喷涂PA1010/nano-ZrO2复合涂层的非等温结晶动力学[J].化工学报,2007,58(9):2395-2402. |
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| 作者姓名： | 李亚东 马亿珠 强克刚 曹少魁 张治军 |
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| 作者单位： | 郑州轻工业学院材料工程系;郑州大学材料工程学院; 河南大学特种功能材料重点实验室 |
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| 基金项目： | 河南省高等学校杰出人才创新工程项目
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河南省自然科学基金
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河南省教育厅科技攻关项目 |
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| 摘 要： | 利用火焰喷涂法制备了聚酰胺1010 (PA1010)/纳米氧化锆（nano-ZrO2）复合涂层。采用示差扫描量热法（DSC）研究其非等温结晶行为，对所得的数据分别用Jeziorny法、Ozawa法和Mo法进行处理。结果表明，用Jeziorny法和Mo法处理非等温结晶过程比较理想，而Ozawa法不适用。用Jeziorny法求出的参数Zc(结晶速率常数）和n（Avrami指数)均随降温速率的增加而增加;nano-ZrO2的加入使复合涂层的Zc和n略大于纯PA1010涂层;并使复合涂层结晶半衰期降低、结晶速率及结晶度增大。表明nano-ZrO2具有明显的成核剂作用，加快PA1010的结晶速率，提高涂层的结晶度。
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| 关 键 词： | 聚酰胺1010 纳米氧化锆 复合涂层 非等温结晶动力学 |
| 文章编号： | 0438-1157（2007）09-2395-08 |
| 收稿时间： | 2006-10-23 |
| 修稿时间： | 2006-10-23 |
Non-isothermal crystallization kinetics of flame sprayed polyamide 1010/nano-ZrO2 composite coating |
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| LI Yadong,MA Yizhu,QIANG Kegang,CAO Shaokui,ZHANG Zhijun.Non-isothermal crystallization kinetics of flame sprayed polyamide 1010/nano-ZrO2 composite coating[J].Journal of Chemical Industry and Engineering(China),2007,58(9):2395-2402. |
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| Authors: | LI Yadong MA Yizhu QIANG Kegang CAO Shaokui ZHANG Zhijun |
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| Abstract: | The non-isothermal crystallization kinetics of pure polyamide 1010(PA1010) coating and PA1010/nano-ZrO2 composite coating prepared by flame spraying,was investigated by differential scanning calorimetry(DSC) at various cooling rates.The Avrami analysis modified by Jeziorny and a new Mo method could describe the non-isothermal crystallization processes of PA1010 and PA1010/nano-ZrO2 composite coating very well.The values of Zc and n increased with increasing cooling rate.The value of kinetic parameter F(T) increased,and the values of a had no significant change with increasing degree of crystallinity for PA1010 and PA1010/nano-ZrO2 composite coating,respectively.The difference in the value of exponent n between PA1010 and PA1010/nano-ZrO2 composite coating suggested that the nano-ZrO2 act as nucleation agents of PA1010.The values of half-time of crystallization and crystallization rate coefficient(CRC) showed that the crystallization rate of PA1010/nano-ZrO2 composite coating was faster than that of PA1010 at a given cooling rate. |
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| Keywords: | PA1010 nano-ZrO_2 composite coating non-isothermal crystallization kinetics |
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