以各類碳紙製作高分子基複合材料製程及性質研究

Fabrication and Characterization of Polymer-Based Composites Prepared Through Various Carbon Papers

梁禎桂(Zhen-Kuei Liang)

指導教授 ： 李國榮

義守大學/理工學院/材料科學與工程學系/碩士(2017年)

摘要

本研究分別添加不同種類碳材料(奈米碳管C、石墨烯G、氧化石墨烯GO)及分散劑(THF、Triton-X)，搭配不同高分子基材(酚醛樹脂PF220、聚3,4亞乙基-聚苯乙烯磺酸鈉導電膠PEDOT:PSS、聚二甲基矽氧烷PDMS、環氧樹脂Epoxy)為製程參數，利用配置懸浮液及真空過濾抽氣方式，製備碳強化材紙及複合材料，藉此探討不同製程參數所製成的試片在電性、機械性質、磨耗性質與顯微結構之表現。
實驗結果顯示，碳強化材紙最佳的成型條件為採用奈米碳管長度D μm，分散劑: X，震盪時間: γ min，並依此條件作為後續製作碳強化材紙及高分子基複合材料之製程參數。
在電性量測方面，以添加石墨烯及氧化石墨烯之CG及CGO碳強化材紙電阻率較低，顯示在巴克紙中添加少量的石墨烯或氧化石墨烯，有助於碳強化材紙導電性提升。另外在添加不同高分子基材所製成的複合材料中，除添加PDMS系列的試片電性下降外，其他三種高分子(PF220、PEDOT:PSS、Epoxy)試片電性均上升。
在機械性質拉伸試驗方面，碳強化材紙(CG、CGO)強度較巴克紙(C)試片高。而在碳強化材紙/高分子基複合材料試片中，除添加高分子PDMS之試片強度值皆下降外，其餘添加三種基材膠體之複材試片強度值皆上升，其中以碳強化材紙/PF’系列試片強度最大。而比較各類巴克紙(C)/高分子基複合材料應力-應變圖發現，除C / PF’試片的應變量較低外，其餘試片的應變量皆較純巴克紙(C)試片高。
在磨耗試驗方面，在所有單純強化材紙中，只有含石墨烯之CG試片經磨耗測試後嚴重破損;而碳強化材紙/高分子基複合材料試片之磨耗性質明顯較單純碳強化材紙試片佳。在三種碳強化材紙所製成的複合材料系列試片中，除添加PDMS的複合材料試片無法順利完成磨耗試驗外，添加基材膠體PF220、Epoxy及PEDOT:PSS所製成的複合材料，因基材膠體能滲入碳強化材紙中達到結合強化之作用，具有較優異的結合性及耐磨性，所以皆可順利完成磨耗。

關鍵字

奈米碳管 ； 石墨烯 ； 氧化石墨烯 ； 巴克紙 ； 碳強化材紙 ； 電 性量測

並列摘要

In this study, different carbon materials (Carbon Nanotube(C), Graphene(G), Graphene Oxide(GO)), different dispersants (Tetrahydrofuran(THF), TritonX-100), and different polymer substrate gels (phenolic resin(PF220), poly-3,4 -ethylidene-polystyrene sulfonate(PEDOT:PSS), polydimethyl-siloxane (PDMS), and Epoxy) were adopted to fabricate different carbon paper / polymer composites. Firstly, different carbon papers were prepared througth ultrasonic vibration dispersion and vacuum filtration of carbon materials’ suspension. This research attempt to study the interrelationships among the conductivity, mechanical properties, microstructure of specimens with different process parameters.
The experimental results show that adopting carbon nanotubes with length D μm, X dispersant, and shocking time γ min are the best forming conditions.
In the electrical measurement, carbon papers added graphene(CG), graphene oxide(CGO) with CNTs showed lower resistivity. The results show that adding with little graphene or graphene oxide could improve the conductivity of carbon paper. Furthermore, among different polymer substrates composite materials, the specimen added with PDMS show the declined conductivity, the other composite specimens (added with PF220, PEDOT:PSS, Epoxy) showed better conductivities than that of pure carbon papers.
In the tensile test, the CG and CGO carbon papers showed higher strength than that of the buckypapers. However, the strength of carbon paper / polymer-based composite specimens were higher than that of pure carbon papers except the PDMS specimen. Among all composite specimens, the PF’ series specimen showed the largest strength. To compare with stress-strain curves of various types of buckypapers(C) / polymer matrix composites, the C / PF’ specimen showed the lowest strain. The strain values of the other composite specimens are higher than that of the pure buckypaper.
In the wear test, among all pure carbon papers, only the CG specimen is damaged seriously. The wear properties of all carbon paper / polymer-based composite specimens were better than that of pure carbon papers. All of PDMS composite specimens with different carbon papers could not finish the wear test. As result of better binding between carbon papers and substrates, the composite specimens with PF220, PEDOT:PSS and Epoxy substrates showed more excellent wear resistance.

並列關鍵字

Carbon Nanotubes ； Graphene ； Graphene Oxide ； Buckypaper ； Carbon reinforced paper ； electrical measurement

參考文獻

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