Electrically and Thermally Conductive Carbon Fibre Fabric Reinforced Polymer Composites Based on Nanocarbons and an In-situ Polymerizable Cyclic Oligoester.
Electrically and Thermally Conductive Carbon Fibre Fabric Reinforced Polymer Composites Based on Nanocarbons and an In-situ Polymerizable Cyclic Oligoester.
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DOI：
10.1038/s41598-018-25965-w
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发表时间：
2018-05-16
影响因子：
4.6
通讯作者：
Kim SY
中科院分区：
文献类型：
--
作者：
Jang JU;Park HC;Lee HS;Khil MS;Kim SY
人们对基于热塑性基体的碳纤维织物增强聚合物 (CFRP) 复合材料越来越感兴趣，这种复合材料易于快速生产、修复或回收。为了扩大热塑性CFRP复合材料的应用，我们提出了一种使用可原位聚合的热塑性环状对苯二甲酸丁二醇酯低聚物基体制造具有改善的导电性和导热性的导电CFRP复合材料的工艺，该复合材料可以诱导碳纤维的良好浸渍和纳米碳填料的高度分散。在最佳加工条件下，表面电阻率低于 10+10 Ω/sq 量级，可实现汽车外板静电粉末喷涂应用，且纳米填料含量低至 1 wt%。此外，含有 20wt% 石墨烯纳米片（GNP）的 CFRP 复合材料被发现表现出 13.7W/m·K 的优异导热率。将多壁碳纳米管掺入CFRP复合材料更有利于提高导电率，而掺入GNP更有利于增强导热率。可以在 2 分钟内制造出所开发的热塑性 CFRP 复合材料。所提出的复合材料具有足够的潜力用于汽车外板、发动机缸体和其他需要导电特性的机械部件。
There is growing interest in carbon fibre fabric reinforced polymer (CFRP) composites based on a thermoplastic matrix, which is easy to rapidly produce, repair or recycle. To expand the applications of thermoplastic CFRP composites, we propose a process for fabricating conductive CFRP composites with improved electrical and thermal conductivities using an in-situ polymerizable and thermoplastic cyclic butylene terephthalate oligomer matrix, which can induce good impregnation of carbon fibres and a high dispersion of nanocarbon fillers. Under optimal processing conditions, the surface resistivity below the order of 10+10 Ω/sq, which can enable electrostatic powder painting application for automotive outer panels, can be induced with a low nanofiller content of 1 wt%. Furthermore, CFRP composites containing 20 wt% graphene nanoplatelets (GNPs) were found to exhibit an excellent thermal conductivity of 13.7 W/m·K. Incorporating multi-walled carbon nanotubes into CFRP composites is more advantageous for improving electrical conductivity, whereas incorporating GNPs is more beneficial for enhancing thermal conductivity. It is possible to fabricate the developed thermoplastic CFRP composites within 2 min. The proposed composites have sufficient potential for use in automotive outer panels, engine blocks and other mechanical components that require conductive characteristics.
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