CAJ | 학술논문

研究利用玉米秸秆粉体作为增强材料与聚乙烯（ PE）通过挤出成型制备玉米秸秆粉体／PE复合材料的可行性，并考查了玉米秸秆粉体添加量及其尺寸对复合材料力学性能的影响。结果表明：随玉米秸秆粉体添加量的增加，玉米秸秆粉体／PE复合材料的拉伸强度、拉伸模量呈先升后降趋势，弯曲模量逐渐增大，冲击强度则逐渐减小；当玉米秸秆粉体添加量为50％时，复合材料的综合力学性能最佳。此外，玉米秸秆粉体／PE复合材料的力学性能随玉米秸秆粉体长径比的增大而增强；在考查范围内，添加40目＜h（粒径）≤60目玉米秸秆粉体复合材料的力学性能最好。电镜结果显示添加20目＜h≤40目玉米秸秆粉体／PE复合材料粉体在基体中分布不均，断面形貌最差，而添加40目＜h≤60目玉米秸秆粉体复合材料的断面形貌最佳。
연구이용옥미갈간분체작위증강재료여취을희（ PE）통과제출성형제비옥미갈간분체／PE복합재료적가행성，병고사료옥미갈간분체첨가량급기척촌대복합재료역학성능적영향。결과표명：수옥미갈간분체첨가량적증가，옥미갈간분체／PE복합재료적랍신강도、랍신모량정선승후강추세，만곡모량축점증대，충격강도칙축점감소；당옥미갈간분체첨가량위50％시，복합재료적종합역학성능최가。차외，옥미갈간분체／PE복합재료적역학성능수옥미갈간분체장경비적증대이증강；재고사범위내，첨가40목＜h（립경）≤60목옥미갈간분체복합재료적역학성능최호。전경결과현시첨가20목＜h≤40목옥미갈간분체／PE복합재료분체재기체중분포불균，단면형모최차，이첨가40목＜h≤60목옥미갈간분체복합재료적단면형모최가。
We studied the feasibility of corn stalk fibers as the reinforcement of corn stalk fiber ( CSF)-polyethylene ( PE) com-posites, and investigated the effects of fiber addition and fiber size on mechanical properties of resultant composites.The tensile strength and tensile modulus presented a trend of first increase and then decrease.The flexural modulus increased slightly with the increasing of CSF application content, while the impact strength decreased obviously.The comprehensive mechanical property of CSF-PE composites reached the best level at CSF content of 50%.With the increasing of aspect ra-tio of CSF, the mechanical performance of resultant composites was enhanced.The composites had the best mechanical strength when the aspect ratio of corn stalk fiber was 40-60 mesh.By the scanning electron microscopy, the composites containing 20-40 mesh corn stalk fiber had the worst fracture morphology due to non-uniform fiber distribution, while the fracture surface of composites made of 40-60 mesh corn stalk fiber was the best.