在這項研究中，碳纖維被用來加强两種生物塑料材料PLA複合材料。第一種PLA由10％生物材料含量（80％的ecoflex和10％的CaCO3）和第二PLA由45％的生物材料含量（45％的ecoflex和10％的CaCO3）組成。最終的複合材料使用了一層和兩層碳纖維。進行拉伸，衝擊和疲勞測試以研究複合材料的機械性能。複合材料試樣受到單軸拉伸。掃描電子顯微鏡（SEM）評價纖維與基質的界面粘合。使用拉伸試驗儀器來揭示複合材料的拉伸強度行為。結果表明：兩層碳纖維45°取向PLA 10％的拉伸強度小於45°取向兩層碳纖維的PLA 45％。對於兩層碳纖維的0°取向的PLA 45％觀察到最大拉伸強度。對於具有兩層碳纖維的複合材料，0°取向顯示出比45°取向更高的抗拉強度。 0o取向的複合材料的衝擊阻力比45o取向的要高。由於每個方向的曲線幾乎重疊，所以這種抗衝擊性略有不同。複合材料的機械強度取決於碳纖維層的取向和層數。由於PLA的含量較高，熱穩定性和極限氧指數使PLA的複合材料比PLA 10％的複合材料穩定45％。本研究適用於減少不可生物降解複合材料的使用。

In this study, carbon fiber was used to reinforce with two kinds of bioplastic materials PLA composites. The first PLA consist of 10% bio material content (the ecoflex of 80% and CaCO3 10%) and the second PLA consist of 45 % bio material content (the ecoflex of 45% and CaCO3 10%) were used as a matrix. The final composites used one and two layers of carbon fiber. The tensile, impact, and fatigue test was performed to study the mechanical properties of the composites. Composites specimens were subjected to uniaxial tensile. The interfacial adhesion of the fibers to the matrix was evaluated by Scanning Electron Microscope (SEM). Tensile test instrument was used to reveal the tensile strength behavior of the composites. The results showed that the tensile strength of PLA 10% with 45° orientation of two layers carbon fiber is less than that of PLA 45% with 45° orientation of two layers carbon fiber. The maximum tensile strength was observed for PLA 45% with 0° orientation of two layers carbon fiber. For composite with two layers of carbon fiber, the 0° orientation showed higher the tensile strength than for 45° orientation. The impact resistance by drop impact test is higher for composite with 0o orientation than 45o orientation. This impact resistance is slightly different due to the curve for each direction is almost overlapped. The mechanical strength of the composite depends on the orientation of carbon fiber ply and the number of layers. The thermal stability and limiting oxygen index provides that composite with PLA 45% more stable than composite with PLA 10% due to the higher content of PLA. This study appropriates to reduce the using of the non-biodegradable composite.

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