- 學位論文
聚對苯二甲酸乙二醇酯 /散熱涼爽複合材料之製程改善與功能性質之研究
A Study on the Synthesis and Functional Properties of PET/ Inorganic Cooling Slurry Composite Materials
摘要
本論文主要探討在化學合成聚對苯二甲酸乙二酯（PET）之方法中，加入分散在醇類的無機散熱涼爽礦漿（CDS）來改質傳統PET聚酯之研究。 本研究之化學合成方法參考工業化之PET製程－直接酯化法，並於對苯二甲酸（TPA）與乙二醇（EG）合成聚對苯二甲酸乙二酯（PET）過程中，添加1∼10 wt%之不同含量CDS礦漿，製備成PET/CDS複合材料，以提高PET散熱涼爽之功能性質。期望進一步能開發出具有舒適性與商業前景良好之保健功能性聚酯纖維。 本研究基於現有文獻理論與商業化製程下，以兩段式合成方法，藉由添加0、1.5、3、5、7、10 wt%之不同含量CDS，合成各種不同添加比例之PET/CDS複合母粒，並觀察其化學結構、熱性質、機械性質及功能性質之變化。 在PET/CDS複合材料之結構分析中，以傅立葉紅外光譜儀（FT-IR）檢測其化學結構，發現添加CDS並未出現新的官能基特徵峰或是造成偏移現象，顯示本研究屬於物理混掺。由掃描式電子顯微鏡（SEM）觀察其表面型態與CDS之分散狀況。由熱重分析儀（TGA）分析不同CDS含量對PET/CDS複合材料熱性質之影響，顯示出當CDS添加量增加，造成熱裂解溫度與熱分解速率均降低。以示差掃描熱卡分析儀（DSC）進行檢測，發現PET/CDS隨著CDS含量增加，熱性質有下降之趨勢。將本研究中合成之PET/CDS複合材料以射出成型機製備成試片，並以萬能試驗機對其進行機械性質測試，發現複合材料之抗拉強度隨CDS添加量之增加而有嚴重破壞之現象。 最後，對PET/CDS複合材料進行熱電偶溫差、AlamBeta、熱傳導係數（QTM）之測試、瞬間涼感值(Q-max)與遠紅外線熱影像測試，以評估PET/CDS複合材料之散熱涼爽功能性質。在以上五項測試中，複合材料均隨著CDS含量之增加，有較佳之熱調節能力，導熱係數則亦隨之增加。
並列摘要
In this study, the inorganic cooling slurry（CDS）were added at the chemosynthesis of Polyethylene Terephthalate（PET） to modify conventional PET polyester. For synthesis, the industrialized processes of polyester－direct esterification method was adopted. The various amounts in between one to ten wt% of inorganic slurry（CDS） were added to prepare PET/CDS composites. Such filler was expected to enhance the coolness value of PET. Furthermore, a commercial polyester fiber possessing comfort and health-care functions would be developed. Based on the theoretical and commercialized processes, either two-stage method was applied to synthesize all kinds of PET/CDS composite masterbatch chips which contained different weight percentages of inorganic powders i.e, 0, 1.5, 3, 5,7 and 10. Those chemical structures, thermal properties, mechanical properties and the variation of functional performance were studied. The chemical structures of PET/CDS composites were investigated by FT-IR, it was found that neither new group was made nor phenomenon of displacement was happened. The SEM was used to observe the morphology of PET/CDS composites and also its results were utilized to determine the dispersibility of inorganic particles. For the thermal properties. The TGA results showed that the decomposition temperature and weight loss rate of PET/CDS composites declined with increasing inorganic slurry（CDS）. The plastic injection machine was used to make samples for testing the mechanical properties of PET/CDS composites. The results showed that tensile and compressive strength decreased with increasing of inorganic slurry（CDS）. Finally, the cooling function of PET/CDS composites was studied by thermocouple temperature difference system, Alembeta, thermal conductivity meter, Infrared Thermograph and Q-max. From the test results, these five mentioned tests, the better thermal effects of PET/CDS composites were concluded while compared with regular PET polyester.