微米級環氧樹脂中空球與氧化石墨烯複合材料之成與性質研究

Preparation and Properties of Micro-scaled Hollow Epoxy Spheres and Graphene Oxide Composite Materials

葉瑋庭(Wei-Ting Yeh)

指導教授 ： 葉瑞銘

中原大學/理學院/奈米科技碩士學位學程/碩士(2012年)

https://doi.org/10.6840/cycu201200600

摘要

本論文的研究重點主要分為兩個部份：(一) 低介電、低熱傳熱固性環氧樹脂製備與應用研究；(二) 環氧樹脂石墨烯有機/無機奈米複合材料的製備及防腐蝕應用探討。
第一部分是合成微米級環氧樹脂中空球及其對應之多孔性環氧樹脂材料之合成鑑定與性質研究。由於做為核心模板的表面修飾胺基二氧化矽粒子，可與環氧樹脂單體上的環氧基做開環反應，利用核心去除法與逐層自我組裝法(layer-by-layer self-assembly) 的概念，使二氧化矽粒子的表面上披覆一層完整硬化的環氧樹脂殼層，接著以氫氟酸將二氧化矽核心去除，以製備出微米級環氧樹脂中空球。將上述做好的中空球加入進環氧樹脂基材中，成為具有多孔性質的環氧樹脂材料。當一透明的環氧樹脂經多孔化後，由UV-vis結果了解，孔洞的存在會降低其透光度，故有隔絕光線的特性。經熱傳導與介電性質分析後，熱傳率與介電常數隨孔洞數量增加而降低，此性質表示多孔性環氧樹脂擁有更好的隔熱與絕緣能力。
第二部分是研究改善環氧樹脂塗料之防腐蝕能力，在塗料應用廣泛、加工性良好的環氧樹脂，將氧化石墨烯(graphene oxide) 加入，製成環氧樹脂/氧化石墨烯複合材料，此複材塗佈在鐵片上，由於氧化石墨烯同石墨烯是擁有極高長寬比(aspect ratio) 的二維層狀材料，此結構可延遲氣體穿透塗層的速度而提升塗料的防腐蝕性能。由電化學防腐蝕測試與氣體滲透分析儀實驗證明氧化石墨烯的加入，有助於增加塗料的防腐蝕能力。

關鍵字

多孔性 ； 複合材料 ； 防腐蝕 ； 氧化石墨烯

並列摘要

This dissertation mainly focused on two parts: (1) preparation and properties of epoxy resin/silica hollow sphere composites with low dielectric constant and low thermal conductivity and (2) preparation and properties of epoxy resin/graphene composites, as discussed in the following sections:
In the first part, amino-modified silica (AMS) particle was used as template to synthesize core-shell (epoxy-silica) microspheres. After HF etching, the hollow epoxy microsphere (HEM) with uniform epoxy wall thickness was obtained. It should be noted that the TEM showed that the thickness of HEM was about 50 nm. Subsequently, the HEM was blending into the epoxy ring-opening polymerization reactions, leading to the formation of porous epoxy material (PEM). This strategy provided epoxy bulk in which air voids existed between and within the epoxy; as a result, the thermal conductivity reached as low as 0.107 W/mK and dielectric constant of the PEM decreased to 3.67.
In second part, the first preparation of epoxy resin/grapheme composites applied in corrosion protection was presented, as identified by series of electrochemical corrosion measurements. This enhancement in corrosion protection of graphene-based epoxy coatings was attributed to the graphene oxide exhibited high aspect ratio, which cause the gas would encounter more tortuous path in traversing graphene oxide-based polymer nanocomposites coatings.

並列關鍵字

Composite ； porous ； graphene oxide ； anti-corrosion

參考文獻

[47] 柯揚船，皮特斯壯，聚合物-無機奈米複合材料，五南出版社2004。

[3] H. Lee, K. Neville Handbook of Epoxy Resins, McGraw-Hill, New York, 1967.

[5] C. P. Wang Polymer for Electric and Photonic Application, Princeton. New Jersey, 1993.

[7] T. Graham, J. Chem. Soc., 1864, 17, 318.

[8] R. Roy, J. Am. Ceram. Soc., 1969, 52, 44.