| SIS及其MAH接枝物改性PS/纳米CaCO3复合材料的力学性能 |
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| 引用本文： | 李谷,麦堪成,王玉海,冯开才. SIS及其MAH接枝物改性PS/纳米CaCO3复合材料的力学性能[J]. 中山大学学报(自然科学版), 2006, 45(1): 58-60 |
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| 作者姓名： | 李谷 麦堪成 王玉海 冯开才 |
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| 作者单位： | 中山大学化学与化学工程学院∥教育部聚合物复合材料及功能材料重点实验室,广东,广州,510275 |
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| 基金项目： | 广东省自然科学基金重点资助项目(021731)，高等学校博士学科点专项科研基金资助项目，广东省科技攻关计划资助项目(2003B10503) |
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| 摘 要： | 将苯乙烯与异戊二烯嵌段共聚物(SIS)改性PS/纳米CACO3复合材料,材料冲击强度随着SIS用量的增加而提高。PS/纳米CACO3/SIS(质量百分比为100/5/8)复合材料的缺口和无缺口冲击强度分别由PS的1.61和6.35 KJ/M2提高到2.21和7.59 KJ/M2。熔融接枝马来酸酐MAH后,材料冲击强度进一步提高。MAH接枝率为3.08%的PS/纳米CACO3/SIS-MAH(100/5/6)复合材料的无缺口冲击强度由SIS改性材料的7.69 KJ/M2提高到11.69 KJ/M2。随着SIS及SIS-MAH的用量的增加,复合材料的拉伸强度下降,断裂伸长率明显提高。动态力学性能表明纳米CACO3对PS/SIS具有一定的增强作用。
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| 关 键 词： | SIS PS 纳米CACO3 冲击强度 拉伸强度 |
| 文章编号： | 0529-6579（2006）01-0058-03 |
| 收稿时间： | 2005-05-17 |
| 修稿时间： | 2005-05-17 |
The Mechanical Performance of PS/Nano-CaCO3 Composites Modified by Maleic Anhydride Grafted Styrene-Isoprene-Styrene Triblock Copolymer |
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| LI Gu,MAI Kan-cheng,WANG Yu-hai,FENG Kai-cai. The Mechanical Performance of PS/Nano-CaCO3 Composites Modified by Maleic Anhydride Grafted Styrene-Isoprene-Styrene Triblock Copolymer[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2006, 45(1): 58-60 |
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| Authors: | LI Gu MAI Kan-cheng WANG Yu-hai FENG Kai-cai |
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| Affiliation: | School of Chemistry and Chemical Engineering//Key Laboratory of Polymeric Composites and Functional Materials of the Ministry of Education, Sun Yat-sen University, Guangzhou 510275,China |
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| Abstract: | Styrene-isoprene-styrene triblock copolymer(SIS) and its maleic anhydride(MAH)-grafted polymer were used to modified PS/nano-CaCO_3 composites.The impact strength of the composites had a great improvement due to the flexile interface of SIS between PS and CaCO_3.PS/nano-CaCO_3/SIS-MAH(100/5/6) with 3.08% MAH exhibited higher non-touched impact strength,namely 11.69 kJ/m~2, compared to 7.69 kJ/m~2 of the pure SIS modified composites.The tensile strength of SIS and SIS-MAH modified PS/nano-CaCO_3 decreased with the increase of SIS or SIS-MAH content,but elongation at break improved apparently.The results of dynamic mechanical measurement showed that nano-CaCO_3 had some stiffen effect on PS/SIS blend. |
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| Keywords: | styrene-isoprene-styrene triblock copolymer polystyrene nano-CaCO_3 impact strength tensile strength |
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