| Summary: | 碩士 === 國立臺灣科技大學 === 高分子系 === 97 === The inert surfaces of pristine diamond (PD) and PET film were modified, respectively, with different chemicals and procedures to introduce the epoxide and methacryloyl groups on their respective surfaces. A coating agent consisted of the said epoxide containing diamond (called ED), a binder agent solution, a photosensitizer, and a photoinitiator was prepared, and was applied onto the methacryloyl containing PET film (called MMA-PET) by wire-wound rod. After evaporating and degassing under the reduced pressure, the thin film of coating agent was exposed to UV light (λmax；365nm) at room temperature to afford a coating film with interpenetrating network structure. The tensile strength of the free coating film (called free-film) and the adhesion strength of the coating film on MMA-PET were investigated. The experimental results showed that tensile strength of the free-film increases with the amount of ED embedded because of the chemical reaction between the ED and the binder agent matrix, while the strength of the film decreases with the amount of PD embedded because of low interfacial stress between the PD and the matrix. The adhesion strength of coating film on the MMA-PET was improved significantly because of the free radical polymerization of the methacryloyl groups on the surface of PET film and in the binder resin.
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