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不同之多元醇及離子化劑對水性PU之影響

The Effects of Polyols and Anionmers on Polyurethane Dispersions

摘要


PU(Polyurethane)是一種被廣泛應用的高分子產品,由於PU具有優越的物性以及可藉由挑選不同之原料來使PU具有多變的物性,如此的多樣選擇性。使的PU被應用於許多方面上而成為一普及之產品。近年來由於環保意識的高漲,有機溶劑的使用因此變成了一個棘手的問題,然而高分子的儲存方式大多是以溶於有機溶劑的方式來儲存,因此在這方面為了解決有機溶劑使用上的問題,因此便想到以水來替代有機溶劑,水為一隨處可得又不會對環境造成傷害的資源,然而水位PU(PUD: Polyurethane Dispersion)也就因而誕生,水位PU由於用了水來取代有機溶劑的使用,將PU分散儲存在水中,大大減少了有機溶劑的使用量而達到環保的目的,然而本實驗即以不同的多元醇以及離子化劑來合成水性PU,來探討其不同的原料所合成之產品機械物性的差異。

並列摘要


Polyurethanes have been found in wide applications such as coatings and adhesives due to their unique properties, and a great of efforts have been made on chemistry and physics.In polyurethane system, aqueous polyurethane dispersions are expanding their applications in coatings, adhesives, paper sizings, etc. due to the trend of the environmental regulations to decrease the level of solvent emissions. The incorporation of ionic groups into polyurethanes is a practical method to obtain aqueous polyurethane dispersions, and various polyurethane ionomers have been described in the literature. In this study, various polyurethane dispersions derived from polycarbonatediols are prepared, and the effects of ionomers and polycarbonatediols are investigated.

並列關鍵字

polyurethanes dispersions ionomers polycarbontediols

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