防振熱塑性彈性材料實驗特性之研究

地震對於土木結構是一大威脅，地震所造成的擾動對公共建設的損害不僅引致經濟的損失，同時也阻礙救災行動。在許多公共工程中，例如橋梁、鐵路平交道、建築等須使用彈性體材料來達到防振之目的。本研究主要利用熔融摻混技術，探討苯乙烯-丁二烯-苯乙烯共聚物(SBS)分別與酯類聚胺酯(TPU-EX)與醚類聚胺酯(TPU-ER)在不同比例下進行摻混，並針對此新型熱塑性彈性材料(TPE)之加工性、相容性、相形態、機械性質、耐熱性和防振性能等進行一系列實驗測試。從研究結果顯示，SBS摻混不同比例TPU-EX和TPU-ER之剪切黏度特性與SBS相似。換言之，SBS加工性不會因摻混TPU而改變。相容性測試結果顯示兩相材料在不同組成範圍下乃呈現不相容之特性。SBS的耐熱性隨著TPU摻混比例增加，熱收縮率明顯改善達十幾倍之多。SBS機械性質與防振性能亦隨著TPU的摻混比例而增加。在動態性質防振試驗得知，SBS隨著TPU-EX和TPU-ER的摻混後，其動態倍率降低，損失係數提高，因此在防振與抑制噪音方面有明顯提升的效果。另外SBS/TPU熱塑彈性材料在較高頻率下具有較佳的動態阻尼性質。本研究之分析結果可在相關工程領域於考慮防振功能時，提供有價值之參考資訊。

關鍵字

熱塑性彈性體；苯乙烯-丁二烯-苯乙烯共聚物；聚胺酯；防振性

並列摘要

Earthquake has a great threaten on the civil engineering structures, as it can damage public constructions very seriously, which may result in an economical loss and hamper the succor action in the event of disaster. In many engineering constructions such as bridge, railway intersection, and architecture, which need the elastomer to improve anti-vibration performance. This study presents the preparation of novel thermoplastic elastomers (TPEs) based on poly(styrene-butadiene-styrene) (SBS), ester-type polyurethane (TPU-EX), and ether-type polyurethane (TPU-ER) materials via melt blending. A series of experiments were conducted on the relationship between their rheological, compatibility, morphology, mechanical properties, thermal resistance, and anti-vibration performance, given different compositions. The results showed that the shear viscosity of SBS not obvious effect with TPU content. The dynamic mechanical analysis results show incompatibilities between SBS and TPU. The mechanical properties, thermal resistance, and anti-vibration performance are improved upon an increase in the amount of TPU, suggesting that the blending of SBS with TPU was consistent with the compound rule. In addition, the SBS/TPU TPEs have better dynamic damping properties at high frequency. The analyzed results in this study may provide valuable information when considering a function of anti-vibration in relevant engineering fileds.

並列關鍵字

thermoplastic elastomers ； Poly(styrene-butadiene-styrene) ； polyurethane ； anti-vibration

參考文獻

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國際替代計量

防振熱塑性彈性材料實驗特性之研究

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