聚乳酸/氫氧化鋁/含矽氧烷分枝狀高分子複合材料之阻燃性質

Flame Retardant Properties of Polylactide/Aluminum Hydroxide/Branched Siloxane Polymer Composites

吳泰佑(Tai-You Wu)

指導教授 ： 鄭國忠

國立臺北科技大學/工程學院/化學工程研究所/碩士(2013年)

摘要

本研究以氫氧化鋁(ATH)結合自行合成之有機-無機含矽氧烷分枝狀高分子(BPS2)作為聚乳酸(PLA)之無鹵素阻燃劑，藉由塑譜儀以熔融混煉法製備聚乳酸/氫氧化鋁/含矽氧烷分枝狀高分子之阻燃性複合材料。以PLA：ATH重量比75：25時，尚未加入含矽氧烷分枝狀高分子(BPS2)其限氧數值為31並且垂直燃燒測試可達V-2等級；當部份ATH藉由含矽氧烷分枝狀高分子(BPS2)取代後LOI值皆可維持在30，複合材料經圓錐量熱儀測試其平均熱釋放率有下降趨勢，PLA/ATH/BPS2複合材料除P75-0阻燃等級為V-2(UL94 V)外其餘複合材料皆能達到UL-94規範之V-0等級，垂滴現象明顯改善但不會引燃棉花；依實驗證明，添加含矽氧烷分枝狀高分子可有效提升PLA/ATH複合材料之阻燃性質。

關鍵字

聚乳酸 ； 矽氧烷分枝狀高分子 ； 阻燃性複合材料 ； 限氧指數 ； UL-94 阻燃測試 ； 圓錐量熱儀

並列摘要

Polylactide (PLA) composites with aluminum hydroxide (ATH) and branched siloxane polymer (BPS2) were prepared via direct melting compounding using a brabender. The limiting oxygen index (LOI) of the PLA composite with 25 wt% of ATH, and without BPS2, was about 31. Only V-2 rating (UL94 V) could be achieved. When a portion of the ATH was replaced with the siloxane polymer (BPS2), the LOI was still kept at about 30, but the average heat release rate measured by a cone calorimeter was reduced, and V-0 rating could be obtained. It was also found that addition of the branched siloxane polymer could improve the impact strength of the PLA/ATH composite.

並列關鍵字

polylactide ； branched siloxane polymer ； flame retardant ； limiting oxygen index ； UL-94 test ； cone calorimeter

參考文獻

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