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題名 | MDI與環氧樹脂接枝型互穿網狀結構聚合物之機械性質與形態學之研究 |
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作者姓名(中文) | 韓錦鈴; | 書刊名 | 宜蘭農工學報 |
卷期 | 9 1994.12[民83.12] |
頁次 | 頁89-102 |
分類號 | 467.4 |
關鍵詞 | 環氧樹脂; 同時總體聚合; 掃描式電子顯微鏡; 形態學; 接枝型互穿網狀結構聚合物; Epoxy; Simultaneous bulk polymerization; Scanning electron microscopy; SEM; Morphology; Graft interpenetating polymer network; Graft-IPN; |
語文 | 中文(Chinese) |
中文摘要 | 藉由異氰酸基(isocyanate group)會與環氧樹脂(DGEBA)上懸掛之二級氫氧基 ( pendent secondary hydroxyl group )反應生成胺基甲酸酯鍵( urethane group )後 ,再利用同時總體聚合( Simultaneous Bulk Polymerization )的方式分別合成出不同成 分的 MDI/Epoxy 接枝型互穿網狀結構聚合物( Graft Interpenetrationg Polymer Networks, Graft-IPN )並加以比較其性質上的差異。 藉助應力 - 應變性質( Stress-strain property ), Izod 耐衝擊性質( Izod impact property ), 破壞能量 G �u值( Fracture energy, G �u), 動態機械性質( Dynamic Mechanical Property ), 掃描式電子顯微鏡( Scanning Electron Microscopy, SEM ) 等測試來探討在環氧樹脂中加入短鏈的 MDI 不同組成份, 對其增韌性質與形態學( Morphology ) 的影響。由 SEM 照片顯示,MDI/Eopxy Graft-IPN 並沒有橡膠粒子的沈澱及 相分離的現象生成,而關於 Izod 耐衝擊性質,破壞能量及應變等機械性質方面,皆會有所 改變,另外由動態機械性質之測試結果顯示,Tg 並不會有太大的改變。 |
英文摘要 | The reaction of the pendent secondary hydroxyl group in diglycidyl ether of bisphenol A(DGEBA) with the isocyanate group present in the 4,4' diphenyl methane diisocyanate (MDI) was carried out. Afterward, the simultaneous bulk polymerization was used to form interpenetrating polymer networks (IPNs) with a MDI-grafted epoxy structure (graft-PINs), with comparisons given in terms of qualitative differences. MDI, with various weight ratio, were selected to prepare the MDI/Epoxy graft-IPNs in this work. The stress-strain, Izod impact, fracture energy (G �u value) dynamic mechanical properties and scanning electron microscopy (SEM) of these graft-IPNs were investigated. In addition, the relationship between their toughness behavior and morphology were discussed. Photomicrographs of scanning electron microscopy (SEM) showed that there was no phase separation occured. It had shown that the impact property and fracture energy (G �u value) of the MDI/Epoxy graft-IPNs at 12wt.% MDI contonts was highest. Form dynamic mechanical analysis (DMA) , the glass transition temperature (Tg) of MDI/Epoxy graft-IPNs were not significant change. |
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