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研究生:周政坤
研究生(外文):Chou, Cheng-Kun
論文名稱:聚烯烴摻合物的固態以及熔態相容性比較研究
論文名稱(外文):Comparsion of the Compatibility in Solid and Melt States for Polyolefin Blends
指導教授:林國賡林國賡引用關係---
指導教授(外文):Lin Gwo-Geng
學位類別:碩士
校院名稱:淡江大學
系所名稱:化學工程學系
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:1998
畢業學年度:86
語文別:中文
論文頁數:90
中文關鍵詞:流變學分支結構黏彈性相容性黏度高分子摻合物
外文關鍵詞:rheologybranch structureviscoelasticitycompatibilityviscositypolymer blend
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  • 被引用被引用:6
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   本論文以可作為薄膜材料之HDPE,探討摻合不同分支結構之PE(如:metallocene
PE、LLDPE)對其流變性質的影響。實驗部份,以平行板式流變儀做穩態變形及動
態測試,得到摻合物之穩態剪切黏度,及Cole-Cole Plot (.vs.),以分析不同
分支結構之PE對摻合物黏彈性的影響。本論文另選定聚烯烴類塑料(如:metallocene
PE、PP、PS、EVA),以不同比例與HDPE混合,利用熱示差分析儀(DSC)、動態
機械測試儀(DMTA),分析其固態相容性。另以上述Cole-Cole Plot及黏度加成定律
探討其於熔融態之相容性。
  本研究發現,將metallocene PE與HDPE摻合,可改善其加工性,降低生產成
本;分子量分怖(MWD)對黏度、彈性的影響比短支鏈分支的均一性還重要;摻合
不同分支結構mPE,發現有低含量長鏈分支存在的mPE(CG材料),有較明顯剪稀
薄(shear-thinning)現象及彈性。另外,分析摻合物相容性在固態及熔融態之關係,
發現相容性摻合系統在固態與熔態有一致性;不相容性摻合系統在固態與熔態並非
完全一致,且變得更複雜。
The first part of this study aimed at the investigation of the effects
of different branching structure on the melt rheology of the blends of
polyethylene (PE). The tested samples were prepared by blending
high density PE with metallocene PE (mPE) and linear low density PE
(LLDPE), respectively. The steady and dynamic shear data were
obtained by using a rotational rheometer. The Cole-Cole plot
(.vs.) was constructed. Secondly, HDPE was also blended
with other polyolefins such as polypropylene (PP), polystyrene (PS)
and poly(ethylene-co-vinyl acetate) (EVA). Both the DSC and
DMTA data were used to study the compatibility of the above PE
blends, in clouding HDPE/mPE, in the solid state. Furthermore, the
compatibility in molten state was studied using the Cole-Cole plot and
the viscosity-additivity rule.
For various PE blends, it seems that the effects of molecular
weight distribution (MWD) on the melt shear-thinning and elasticity
are more important than the homogeneity of the short chain branch.
Even a very little long chain branching in mPE also has some effects
on them. On the other hand, it was found that the compatible
polymer blends (in solid state) also show compatibility in molten state.
However, the rheological behavior of the incompatible blends may be
quite complicated and unpredictable.
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