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題 名 | Analysis of Mechanical Behavior of Block Copolymers of Polyurethane with Poly (4, 4'-diphenylsulfone terephtalamide)=聚氨基甲酸酯與聚 (4, 4'-二苯磺醯基對苯醯胺) 嵌狀共聚合體機械行為之分析 |
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作 者 | 汪輝雄; 蕭凱仁; | 書刊名 | 逢甲學報 |
卷 期 | 24 1991.11[民80.11] |
頁 次 | 頁501-516 |
分類號 | 467.41 |
關鍵詞 | 氨基甲酸酯與聚; 4'-二苯磺醯基對苯醯胺; 嵌狀共聚合體; 機械行為; |
語 文 | 英文(English) |
中文摘要 | 本文以二種不同分子量聚醇(PTMG;650,2000)分別與4,4'-甲基聯苯二異氰酸 (MDI)及聚(4,4'-二苯磺醯基對苯醯胺)(PSA)預聚合體進行聚縮合反應。每種聚醇與 MDI與PSA預聚合體有五種不同莫耳比,製得十種PU-PSA嵌狀共聚合體,並作機械性質探討 (包括應力一應變測試和應力鬆弛測試)。楊氏模量E,Mooney-Rivlin關係式中之彈性參數 C1和C2,鬆弛模量E1(O)和E2(O)及鬆弛時間τ1和τ2等數據,由實驗結果以探討嵌狀共聚合 體內之硬鏈節和軟鏈節區域對嵌狀共聚合體機械行為影響。結果發現,PU-PSA嵌狀共聚合體 具有良好的彈性性質,尤其是使用分子量2000之聚醇,發現了更好的彈性性質。 |
英文摘要 | Two poly(tetramethylene glycols)(PTMG), molecular weight of 650 and 2000, with 4,4'-diphenylmethane diisocyanate(MDI) and poly(4,4'-diphenylsulfone terephthalamide)(PSA) prepolymer were polycondensated. Five different molar ratio PTMG, MDI and PSA prepolymer were synthesized to form ten PU-PSA block copolymers. The mechanical properties including stress-strain and stress- relaxation measurements of each copolymer were discussed. The determined values of Young's modulus, E, Mooney-Rivlin relation elastic parameters C1 and C2, relaxation moduli E1(0) and E2(0), relaxation time τ1 and τ2 were used to estimate the effect of hard segment and soft segment domains on the mechanical behavior of copolymers. It was found that PU-PSA block copolymers apparently displayed elastic properties, especially using the molecular weight 2000 of PTMG exhibited more elastic behavior. |
本系統中英文摘要資訊取自各篇刊載內容。