教師資料查詢 | 類別: 會議論文 | 教師: 陳幹男 CHEN KAN-NAN (瀏覽個人網頁)

標題:The Curings of Polyaziridines and Carboxylic Groups- Containing Aqueous-Based PU Dispersions
學年83
學期2
發表日期1995/06/22
作品名稱The Curings of Polyaziridines and Carboxylic Groups- Containing Aqueous-Based PU Dispersions
作品名稱(其他語言)
著者陳冠男; 陳幹男
作品所屬單位淡江大學化學學系
出版者新竹市 : 清華大學化學工程研究所
會議名稱第十八屆高分子研討會=The 18th ROC Polymer Symposium 1995
會議地點新竹市, 臺灣
摘要水性PU含有羧基,平時得以形成穩定水相分散液;反應時成為架橋位置所在。Polyaziridines(具有三官能基,或雙官能基的aziridines)會優先和羧基反應,在pH>8.5時水性PU與Polyaziridines混合形成一種穩定而且是單液架橋型的水性PU分散液。其架橋條件隨著pH值和溫度而變化。PU的性質藉由所加入的Polyaziridines型態不同,而有所改變,可由抗張強度伸長率,接觸角吸水性,動態機械分析,粒徑分布,螢光光譜等結果得到證明: PU的架橋性質和aziridines的結構有很大的關連性。;Carboxylic acids functional groups exists in aqueous- based PU dispersions which served as the hydrophilic centers as well as the curing sites of PU before and after the application. Polyaziridines ( such as di-functional or tri-functional aziridines) would become the prime candidates for these curing reactions. The PU dispersions stability of mixed with polyaziridines and forming a stable and curable one-package PU dispersions. The curing conditions were depended on both the pH value and the temperature. The PU properties from various types of polyaziridines were evaluated by tensile strength, elongation, contact angle, water absorption, dynamic mechanical analysis, particle sizer, fluorescence. The result demonstrated that the cured PU properties heavily depended on the structures of aziridines.
關鍵字水性聚胺酯;交聯;聚(1-氮雜環丙烯);分散;羧基;Aqueous-Based Polyurethane;Curing;Polyaziridine;Dispersion;Carboxylic Group
語言中文
收錄於
會議性質國內
校內研討會地點
研討會時間19950622~19950623
通訊作者
國別中華民國
公開徵稿
出版型式
出處第十八屆高分子研討會論文專輯第十一卷第一冊=Proceedings of the 18th ROC Polymer Symposium 1995頁5-8
相關連結
Google+ 推薦功能,讓全世界都能看到您的推薦!