彈性體增韌回收聚碳酸酯改質研究

Study on Toughening Modification in Recycled Polycarbonate with Elastomer

薛霈枎(Pei-Fu Hsueh)

指導教授 ： 芮翔鵬

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2013年)

摘要

本研究在於探討回收的聚碳酸酯(Recycled Polycarbonate)簡稱(RPC)，加入不同結構之核-殼式(Core-Shell Rubber Impact Modifier)增韌改質劑簡稱(CSR)後之複合材料，以及加入苯乙烯-馬來酸酐共聚物(Styrene Maleic Anhydride Copolymer)簡稱(SMA)探討物性變化之情形。複合材料以射出機射出成形方式製作物性測試試片，物性測試種類分別以耐衝擊試驗機測試衝擊強度(Izod Impact)；萬能試驗機測試拉伸強度(Tensile Strength)、伸長率（Elongation）、彎曲強度(Flexural Strength)等機械性質測試，再以掃描式電子顯微鏡(Scanning Electron Microscope)簡稱(SEM)觀察其複合材料之型態結構。藉由上述實驗觀察結果發現不同增韌改質劑在回收之聚碳酸酯中有增韌的效果；不同比列添加量也會產生不同的增韌效果。當回收聚碳酸酯與增韌改質劑以97/3(%)比例共混時，複合材料的機械性質表現最佳並且較未添加比對樣有效增韌20%效果，增韌改質劑添加比例超過3%時，其材料不但無法有效增韌，反而造成其衝擊強度下降，不過伸長率卻較未添加樣提升約9倍。

關鍵字

回收聚碳酸酯 ； 核-殼式增韌劑 ； 萬能試驗機 ； 苯乙烯-馬來酸酐 ； 掃描式電子顯微鏡 ； 增韌 ； 衝擊 ； 拉伸 ； 伸長 ； 彎曲

並列摘要

This study investigated the toughness improvement of recycled polycarbonate (RPC) by mixing with the core-shell rubber impact modifier (CSR). The test samples were melt- extruded via a twin screw extruder connected with an injection process. The Styrene Maleic Anhydride Copolymer (SMA) was used as the impact modifier. The morphology of fractured surfaces and the structure of the samples were examined by employing the Scanning Electron Microscope (SEM). The izod impact， tensile strength and flexural strength have also been studied by a universal testing machine. The Experimental results show that impact modifier can efficiently improve the mechanical properties of the recycled polycarbonate; however, excessive addition of CSR may cause the decaying of notched impact strength. The optimal condition of the toughness for the PC/CSR blends was 97/3 wt. %.

並列關鍵字

Recycled Polycarbonate ； Core-Shell Impact Modifier ； Styrene Maleic Anhydride Copolymer ； Universal Testing Machine ； Scanning Electron Microscope ； Toughen ； Izod Impact ； Tensile Strength ； Flexural Strength

參考文獻

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