DC 欄位 值 語言 DC.contributor 化學工程與材料工程學系 zh_TW DC.creator 黃三洋 zh_TW DC.creator San-Yang Hwang en_US dc.date.accessioned 2002-7-12T07:39:07Z dc.date.available 2002-7-12T07:39:07Z dc.date.issued 2002 dc.identifier.uri http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=89321021 dc.contributor.department 化學工程與材料工程學系 zh_TW DC.description 國立中央大學 zh_TW DC.description National Central University en_US dc.description.abstract 嵌段式聚氨基甲酸酯（Segment polyurethane , PU ） 由於具有複雜及龐大的結構及特殊的微相型態，因此反應出多變化的性質。對此，文獻上一直都沒有比較明確的結果，使得許多人無法詳細瞭解PU的真正性質。為了探討更詳細的PU性質，本實驗以傳統高分子量的cis-polybutadiene，經由臭氧化裂解（ozonolysis），氫化鋁鋰還原，製造出一系列不同分子量(Mn=700~3400)的聚醇(polyol)---cis-HTPB(Hydroxy terminated polybutadiene)，並以HTPB為軟質段(soft segment)的組成，MDI(4，4-diphenylmethane diisocyanate)及不同之鏈延長劑長度( -(CH2)n- n=2.3.4.5.6.10)，即EG、PrD、BD、PeD、HD、DD為硬質段(Hard segment)組成，在固定硬質段含量為50wt%下，聚合出一系列的線性嵌段式共聚合物，利用鑽石刀與超薄切片機來切數十奈米厚度的薄片，然後用染色劑OsO4來將軟硬質段做明顯對比變化，最後利用貴重儀器中心的穿透式電子顯微鏡（TEM）來觀察PU的分子結構，我們便可以利用分子的變化來探討高分子的物理性質。 zh_TW dc.description.abstract Because segment polyurethane has large, complex construction and special microstructure, so it can react so much property. For this, literature did not have much clear result, make so much people can not know the real property of polyurethane. For to know the property of polyurethane, our laboratory use cis-polybutadiene, ozonolysis crack, uncross by lithium aluminum hydride, react a series different Mn= 700~3400 polyol ---- cis HTPB(Hydroxy terminated polyuretadiene), and use HTPB as soft segment, MDI(4,4-diphenylmethane diisocyanate) and different extender EG; PrD; BD; PeD; HD; DD as hard segment, under 50 wt% hard segment content, react a series linear segment copolymer, than use diamond knife and ultra-microtome to crave about 40 nm slice, than use OsO4 to imbue soft segment, finally use TEM to observe the structure of polyurethane, for this, we can know the physical property of polymer by the change of molecule. en_US DC.subject 動態機械性質 zh_TW DC.subject 微結構 zh_TW DC.subject 嵌段式 zh_TW DC.subject 穿透式電子顯微鏡 zh_TW DC.subject TEM en_US DC.subject morphology en_US DC.subject polyurethane en_US DC.subject segment en_US DC.subject DMA en_US DC.title 奈米級嵌段式PU之動態機械性質 與微結構型態研究 zh_TW dc.language.iso zh-TW zh-TW DC.title The dynamic mechanism property and microstructure study of nano-segment polyurethane en_US DC.type 博碩士論文 zh_TW DC.type thesis en_US DC.publisher National Central University en_US