CAJ | 학술논문

采用平板模压成型方法制备聚对苯二甲酸乙二醇酯是（PET）废纤/竹原纤维增强不饱和聚酯复合材料，研究纤维梳理方式及不同质量比对复合材料力学性能与吸水性能的影响。结果表明：相同纤维比例、不同纤维梳理方式的复合材料拉伸强度无显著差异；纤维混合梳理的复合材料弯曲强度和弯曲模量均显著高于分别梳理的复合材料；纤维分别梳理的复合材料耐水性能优于纤维混合梳理的复合材料。动态机械热分析显示：复合材料储能模量随竹原纤维含量增加而增加，PET 纤维含量的增加使复合材料阻尼效应增加。复合材料吸水动力学表明：水分在竹原纤维比例高且分别梳理的复合材料内部的扩散符合 Fick 定律；而水分在竹原纤维比例低且纤维混合梳理的复合材料内部的扩散行为不符合 Fick 定律。
채용평판모압성형방법제비취대분이갑산을이순지시（PET）폐섬/죽원섬유증강불포화취지복합재료，연구섬유소리방식급불동질량비대복합재료역학성능여흡수성능적영향。결과표명：상동섬유비례、불동섬유소리방식적복합재료랍신강도무현저차이；섬유혼합소리적복합재료만곡강도화만곡모량균현저고우분별소리적복합재료；섬유분별소리적복합재료내수성능우우섬유혼합소리적복합재료。동태궤계열분석현시：복합재료저능모량수죽원섬유함량증가이증가，PET 섬유함량적증가사복합재료조니효응증가。복합재료흡수동역학표명：수분재죽원섬유비례고차분별소리적복합재료내부적확산부합 Fick 정률；이수분재죽원섬유비례저차섬유혼합소리적복합재료내부적확산행위불부합 Fick 정률。
Waste polyethylene terephthalate (PET)fibers and original bamboo fibers reinforced unsaturated polyester composites were prepared by flat molding method.The effects of fiber carding methods and PET/bamboo fiber mass fraction ratio on the me-chanical properties and water absorption of the composites were investigated.The results indicate that respective-carding and mixed-carding for fibers do not significantly influence the tensile strength of the resulting composites.However,the flexural strength and flexural modulus of composites using the mixed-carding fibers are significantly higher than those of the respective-carding fibers.The composites prepared with the respective-carding fibers have superior water resistance than those of the mixed-carding fibers.Dynamic mechanical thermal analysis shows that the storage modulus of the composites increases with increasing bamboo fiber fraction;and the increase of PET fiber fraction increases the damping effect of composites.The water absorption ki-netics analysis shows that the water diffusion in the composites with high bamboo fiber fraction and using respective-carding fits the Fick’s law,while that of low bamboo fiber fraction and that of mixed-carding fibers do not meet the Fick’s law.