| 氧化石墨烯核-壳杂化粒子/硅橡胶介电弹性体复合材料的制备与性能 |
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| 引用本文： | 王明路,宁南英,张静,张立群,田明.氧化石墨烯核-壳杂化粒子/硅橡胶介电弹性体复合材料的制备与性能[J].复合材料学报,2016,33(6):1192-1197. |
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| 作者姓名： | 王明路 宁南英 张静 张立群 田明 |
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| 作者单位： | 北京化工大学 有机无机复合材料国家重点实验室, 先进弹性体研究中心, 北京 100029 |
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| 基金项目： | 国家自然科学基金(51173007 |
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| 摘 要： | 采用阳离子聚电解质聚二烯丙基二甲基氯化铵(PDDA)改性SiO_2,再通过静电自组装制备了SiO_2-PDDA-氧化石墨烯(GO)核-壳杂化粒子。采用溶液共混法将SiO_2-PDDA-GO引入到高温硫化硅橡胶(SR)中,制备了SiO_2-PDDA-GO/SR介电弹性体复合材料。结果表明:该方法能实现GO在SiO_2表面大面积的包覆,解决了GO容易自聚集的问题,且PDDA具有还原GO的作用,无需再对GO核-壳杂化粒子/SR复合材料进行原位热还原,简化了实验方案,节能环保。SiO_2-PDDA-GO填充量为60wt%时,在100 Hz频率下,SiO_2-PDDA-GO/SR介电弹性体复合材料的介电常数为21.53,是SR的11.6倍,介电损耗保持较低值,同时,复合材料的模量保持在较低水平。在电场强度为2.48kV/mm时,60wt%的SiO_2-PDDA-GO/SR介电弹性体复合材料横向电致形变在同一电场强度下与SR相比增加了15倍。
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| 关 键 词： | 介电弹性体 氧化石墨烯 核-壳杂化粒子 硅橡胶 介电性能 电致形变 |
| 收稿时间： | 2015-11-02 |
Preparation and property of graphene oxide core-shell hybrid particles/silicone rubber dielectric elastomer composites |
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| WANG Minglu,NING Nanying,ZHANG Jing,ZHANG Liqun,TIAN Ming.Preparation and property of graphene oxide core-shell hybrid particles/silicone rubber dielectric elastomer composites[J].Acta Materiae Compositae Sinica,2016,33(6):1192-1197. |
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| Authors: | WANG Minglu NING Nanying ZHANG Jing ZHANG Liqun TIAN Ming |
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| Affiliation: | Center of Advanced Elastomer Materials, State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | Cationic polyelectrolyte poly(diallyldimethylammonium chloride)(PDDA)was used to modify SiO2 ,and SiO2-PDDA-graphite oxide (GO)core-shell hybrid particles were prepared by electrostatic self-assembly.By intro-ducing SiO2-PDDA-GO into high-temperature vulcanization silicone rubber (SR)with solution blending method, SiO2-PDDA-GO/SR dielectric elastomer composites were prepared.Results show that this method can realize GO large surface coating on surface of SiO2 to prevent GO from self-agglomerating.GO core-shell hybrid particles/SR composites were obtained without in-situ thermal reduction because PDDA can reduce GO,made experimental scheme simple and environmental protection.The dielectric constant of SiO2-PDDA-GO/SR dielectric composite at 100 Hz increases to 21.53 with 60wt% SiO2-PDDA-GO which is 11.6 times than SR,and dielectric loss remains at low level.Meanwhile,modulus of composites remains low level.The lateral actuation strain of SiO2-PDDA-GO/SR dielectric elastomer composites with 60wt% SiO2-PDDA-GO at 2.48 kV/mm compared with pure SR increases 15 fold under same electric field intensity. |
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| Keywords: | dielectric elastomer graphene oxide core-shell hybrid particles silicone rubber dielectric property actuation strain |
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