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LIN CHIN, YU
|關鍵字:||UV light curable;紫外線硬化型;Conductive silver paste;Acrylic group;Reactive monomer;Poly-thiol;Milling dispersion;導電銀膠;壓克力樹脂;反應性單體;硫醇;分散程序||出版社:||化學工程學系||摘要:||
The performances of conductive pastes are determined by the shape and size of conductive particles in polymer matrix. The more contact points between conductive particles may be to enhance conductivity ability forming excellent conductive path. The UV light cured types of electrically conductive pastes can be operated at room temperature to speed package. Additionally, the photo work conductive pastes not damage the substrate, device, and other materials during LCD assembly. Therefore, the low solid content, high conductivity, and cured fast at low temperature of UV curable electrically conductive pastes are an important research for advanced electronics and next generation of flat plate display (FPD).
In this dissertation, the different solid contents of 0.2~1.6 µm granular silver particles and binder containing acrylic group are formulated to make conductive dispersoid with various size flake and small granular silver through a milling dispersion with steel balls. This conductive dispersion solution is then added into the photosensitive polymer composed from reactive monomer (DPEPA), photo-initiator (I369 and I1800), and multi-functional poly-thiol to manufacture UV light curable electrically conductive pastes.
Moreover, this study applies DPC, TGA and four points of conductive probe to analyze reactivity, conversion, thermal resistance, and conductivity of UV light curable electrically conductive pastes. As shown in the results, particularly, for the UV light curable electrically conductive pastes involving photo-initiator I369, reactivity, conversion, and thermal resistance are both increased with increasing the amount of three functional thiol; and with 35wt%of poly-thiol and 65wt% after a radiation of 150mJ/cm2, the temperature of thermal decomposition (onset) and conductivity can be obtained as 382℃ and 2.004×10-1Ω/□, respectively.
In conclusion, this research preparing UV light curable electrically conductive pastes has good properties and may be friendly used in advanced information and opto-electronics package in future.
|Appears in Collections:||化學工程學系所|
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