本研究中探討聚矽氧烷之有機-無機混成紫外光硬化塗料應用於PET表面硬化處理。無機材料以溶膠-凝膠法合成類似多面體矽氧烷寡聚物(Polyheral Oligomeric Silsesquioxanes, POSS)的奈米結構，選用3-(甲基丙烯酰氧)丙基三甲氧基矽(3-(Methacryloyloxy)propyltrimethoxysilane, MAPTMS)和四乙氧基矽烷(tetraethyl orthosilicate, TEOS)在酸性催化下製備功能性聚矽氧烷，並且藉由控制聚矽氧烷之分子量與粒徑大小合成出類似POSS 奈米結構；有機材料選用環氧樹壓克力樹脂(酯)與聚氨壓克力樹脂(酯)。將有機-無機混成紫外光硬化塗料以旋轉塗佈在PET基板上，經過紫外光固化在基板上形成硬型塗膜，由SEM 結果分析製備出的硬型塗層中功能系聚矽氧烷可均勻分散在環氧壓克力與聚氨酯壓克力樹脂中；由不機械性能分析顯示，硬型塗膜在PET 基板上聚可撓性，可提升其硬度、附著度與光學性能，並且通過耐水性、耐溶劑、耐酸鹼等標準測試；最後，以化學蝕刻法與多層膜鍍膜製程再度提升塗膜在PET 上的機械性能。其所有結果皆與POSS 測試結果相同，證實本實驗製備成功出類似POSS之功能性聚矽氧烷。

In this study, the UV curing of silica based organic – inorganic hybrid coating have been developed for the hard coat treatment on PET substrate. The inorganic materials were prepared by sol-gel method to produce the POSS-like nanostructures (Polyheral Oligomeric Silsesquioxanes, POSS), used 3-(Methacryloyloxy)- propyltrimethoxysilane (MAPTMS) to synthesis the functional polysiloxane in the presence of an acidic catalyst. By controlling the molecular weight and particle size of functional polysiloxane, the POSS-like nanostructures were obtained. The organic materials used polyurethane acrylate resin.
Organic–inorganic hybrid coatings were spin-coated on PET substrate and UV-cured to form a hard coating film. The different mechanical tests of hybrid coatings show that it is flexible and can enhance the hardness, adhesion, transmittance of the PET substrate, and the tests of the water resistance, solvent resistance, acid and base resistance are all satisfactorily passed. The SEM results show that the functional polysiloxnae uniformly dispersed in the polyurethane acrylate resin. All the results are the same level as that of the POSS, so the study can synthesize the POSS-like functional polysiloxane.

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