拟薄水铝石改性环氧树脂复合材料的制备与性能 |
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引用本文: | 刘国隆,周宏,张宏达,葛静.拟薄水铝石改性环氧树脂复合材料的制备与性能[J].复合材料学报,2021,38(10):3237-3244. |
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作者姓名: | 刘国隆 周宏 张宏达 葛静 |
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作者单位: | 哈尔滨理工大学 材料科学与工程学院,哈尔滨150040;哈尔滨理工大学 材料科学与工程学院,哈尔滨150040;哈尔滨理工大学 工程电介质及其应用教育部重点实验室,哈尔滨150080 |
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基金项目: | 黑龙江省自然科学基金(E2015058) |
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摘 要: | 采用水热合成法制备拟薄水铝石(AlOOH)纳米棒,以3-氨基丙基三乙氧基硅烷(APTES)为表面改性剂,制得mAlOOH,以环氧树脂(Epoxy,EP)为基体,制备AlOOH/EP和mAlOOH/EP复合材料。研究AlOOH和mAlOOH的填充量对AlOOH/EP及mAlOOH/EP复合材料性能的影响。结果表明,mAlOOH明显提高了mAlOOH/EP复合材料的力学性能。mAlOOH的填充量为4wt%时,mAlOOH/EP复合材料的冲击强度和弯曲强度分别比聚合物基体分别提高了259%和44%;填充量不超过5wt%时,mAlOOH/EP的介电常数与介电损耗均略低于纯环氧树脂。当添加量为3wt%时,mAlOOH/EP具有最低的介电常数和介电损耗及最高的玻璃化转变温度(123℃)。
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关 键 词: | 环氧树脂 拟薄水铝石 力学性能 热学性能 介电常数 |
收稿时间: | 2020-10-30 |
Preparation and properties of boehmite modified epoxy resin composites |
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Affiliation: | 1.School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China2.Key Laboratory of Engineering Dielectric and its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China |
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Abstract: | Boehmite (AlOOH) nanorods were prepared by hydrothermal method and modified by 3-aminopropyltriethoxysilane (APTES) to obtain modified boehmite (mAlOOH). Then, AlOOH/epoxy (EP) and mAlOOH/EP composites were fabricated by using the EP as the matrix. The effects of the contents of AlOOH and mAlOOH on the properties of the AlOOH/EP and mAlOOH/EP composites were systematically studied. The results show that the mechanics properties of mAlOOH/EP composites are obviously improved by mAlOOH. The impact strength and flexural strength of 4wt% mAlOOH/EP composites are increased by 259% and 44% than that of neat EP, respectively. Both dielectric constant and dielectric loss of mAlOOH/EP composites are slightly lower than those of the pure EP with mAlOOH no more than 5wt%. The mAlOOH/EP composites with 3wt% mAlOOH exhibit excellent global properties with the lowest dielectric constant and the lowest dielectric loss, as well as the highest glass transition temperature (123℃). |
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