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Engineering
耦合剂在提高聚合物纳米复合物介电性能方面的应用
耦合剂在提高聚合物纳米复合物介电性能方面的应用
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JoVE Journal Engineering
Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

耦合剂在提高聚合物纳米复合物介电性能方面的应用

Full Text
6,324 Views
06:34 min
September 19, 2020

DOI: 10.3791/60916-v

Haotian Li1,2,3, Dong Zhang4, Zechen Li4, Leyi Li5, Jiachen Liu1, Yugui Li1,2

1Taiyuan University of Science and Technology, 2Heavy Machinery Engineering Research Center of the Ministry of Education, 3Laboratory of Magnetic and Electric Functional Materials and Applications,The Key Laboratory of Shanxi Province, 4Beijing Institute of Aerospace System Engineering, 5Department of Electrical and Information Engineering,Sichuan College of Architectural Technology

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Please note that some of the translations on this page are AI generated. Click here for the English version.

在这里,我们演示了一种简单、低成本的解决方案铸造工艺,利用表面改性BaTiO3 填料,提高聚合物纳米复合材料的填料和基质的兼容性,从而有效提高复合材料的能量密度。

实践证明,利用商用耦合剂可以改变陶瓷纳米填埋器的表面,从而在陶瓷聚合物界面上取得了良好的的可加工性,并采用适当数量的耦合剂获得增强的储能性能。本工作所开发的方法可用于柔性复合材料的制备,这是生产高性能薄膜电容器的极易选择。用 95 重量%乙醇水溶剂 15 分钟超声处理,准备 KH550 溶液。

在KH550溶液中用30分钟的超音速处理BT纳米粒子。在此工艺中,测量 KH550 和 BT 纳米颗粒填料的重量,在 KH550 稀释溶液中涂有 1、2、3、4 和 5 个重量百分比的耦合剂,体积为 5 毫升。将水乙醇溶剂从80摄氏度的基质中蒸发5小时,然后在真空烤箱中蒸发至120摄氏度12小时。

在准备BTVC-91纳米合成物时,使用干纳米粒子作为表面改性填料。其一,基于D分的聚合物溶液是在室温下溶解0.3克聚合物粉末,在室温下通过磁搅拌8小时。二、将钛酸盐纳米颗粒加入溶液中,然后搅拌12小时形成均匀悬浮液,并超声波化30分钟。

在制备过程中,使用了未加模的钛酸铵和涂有耦合剂的钛酸铵。之后,悬浮液被投射到预热类基板上以制作薄膜。将悬浮液的三毫升掉落在每个玻璃基板上。

五、带悬浮液的玻璃基板在70度下在烤箱中保存8小时,以蒸发溶剂。最后,从玻璃基板中释放出六片,在160摄氏度的空气中将自立薄膜退火12小时。根据协议,成功制造了自立的纳米合成薄膜。

SEM证实,用适当数量的耦合剂处理的陶瓷纳米粒子,在铸造过程中可以均匀地分布在纳米复合物中;而过量的耦合剂可能导致陶瓷纳米粒子之间的相互作用,导致填料的聚集。对于填充量低的纳米复合材料,复合材料的介电常数基本不变,使用少量耦合剂,随着未来耦合剂数量的增加,微减。对于含填料含量高的纳米复合材料,复合材料的介电常数随着少量耦合剂的减合而减小,并随着未来耦合剂数量的增加而急剧减小。

在介电损耗方面,带耦合剂的纳米微子比没有耦合剂的纳米微子具有更高的介电损耗。使用两个重量百分比的耦合剂时,获得了最大的分解强度。从具有较高耦合剂的纳米相微中发现分解强度较低。

由于分解强度增强,电荷放电效率相对较高,提高了具有少量耦合剂的纳米相合成物的最大能量密度。在这项工作中,最广泛研究的铁电材料,高介电常量被用作填料。PVDF-CTFE共聚合物用作制备陶瓷聚合物复合材料的聚合物基质。

为了改变钛酸盐纳米填充剂的表面,购买了市售的KH550作为耦合剂。纳米合成系统的关键量是由一系列实验决定的。提出了一种简单、低成本、广泛应用的方法,提高了纳米级复合材料系统的能量密度。

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