本文旨在開發新世代回收PET自增強複合材料且具有阻燃特性之製程與材料研究技術能量，以量產型熱壓設備進行批次試量產設備建構，並導入連續式製程創造出具量產性和低生產成本的優勢，藉由紡織技術開發回收PET自增強混合包繞紗及複合織物，再進一步利用薄膜堆疊法製備複合材料並深入了解自增強複合材料之機械物性等特性研究。結果顯示回收PET自增強複合材料的拉伸強度高達121.3 MPa，彎曲強度高達94.3 MPa，衝擊吸收能量高達1103.2 J/m，回收阻燃PET自增強複合材料不僅擁有阻燃之特性且拉伸強度達110.7 MPa，彎曲強度達82.7 MPa，衝擊吸收能量達852.0 J/m。針對兩種複合材料之開孔拉伸性質，從複合材料的屈服強度和楊氏模數得知，兩種複合材料系統皆擁有對鑽孔不敏感之特性，且屈服和承載栓孔強度高達99.4 MPa和199.3 MPa。最後，針對產業的應用性和未來新穎的環保科技，致力於永續發展的解決方案，有其市場商機之積極意義，因此更凸顯此一材料與技術開發之其重要性。

The tensile and bearing strength of notched composites is an important factor for composite structural design. However, no literature is available on the notch sensitivity and pin loaded effects of self-reinforced polymer composites. In this study, self-reinforced recycled poly (ethylene terephthalate) (srrPET) composites were produced by film stacking from fabrics composed of double covered uncommingled yarns (DCUYs). Composites specimens were subjected to uniaxial tensile, flexural and Izod impact tests and the related results compared with earlier ones achieved on srPET composites reinforced with non-recycled technical PET fibers. Further on, the effects of open circular holes on the tensile strength of srrPETs with various width-to-hole diameter (W/D) ratios of the specimens, the effects of pin-loaded tensile behavior of srrPET composites with various W/D ratios and edge distance-to-hole diameter (E/D) ratios of the specimens, the endurance limit of tension–tension fatigue of pin loaded composites and damage development in srrPETs assessed by located acoustic emission were studied.
Damage development in srrPET composites indicates that srrPET composites have higher resistance of the composite to crack propagation. These results proved that srrPET composites is tough, ductile notch-insensitive materials and have superior load carrying capability.
The experimental results indicate that the bilinear (yielding followed by post-yield hardening) stress-strain curves were recorded in the open hole tensile (OHT) measurements. The srrPET composites had extremely high yield strength retention (up to 142%) and high breaking strength retention (up to 81%) due to the superior ductile nature of the srrPET composites, which induces plastic yielding near the hole thereby reducing the stress concentration effect. The superior load carrying capability is found in srrPET composites and highly dependent on the W/D ratios. The bearing failure mode occurs in W/D>4, the composites has high yield bearing strength (99.4 MPa) and extremely high ultimate bearing strength (199.3 MPa) due to strong interfacial bonding between the fiber and matrix contributes higher bearing strength. The strong interfacial bonding in srrPET composites has higher fatigue cycles and shows good endurance ability.

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