【摘要】 竹纤维/聚乳酸(BF/PLA)复合材料能够改善PLA脆性大等不足，保持材料的全生物降解性能，而且能够节约成本。但BF与PLA两相界面相容性较差，限制了其性能的进一步提升。为解决这一问题，采用BF/PLA复合毡喷涂改性方法，研究了硅烷偶联剂KH560喷涂溶液的体积分数对BF/PLA复合板结构及性能的影响。结果表明，当KH560体积分数为2%时改性效果最佳，BF/PLA复合板的弯曲强度达32.7 MPa，拉伸强度提升幅度为18.5%，初始分解温度和最大失重速率对应的温度相较未处理的复合材料分别提高了23.0℃和21.7℃，同时24 h吸水率下降至21.2%。更多还原

【Abstract】 Bamboo fiber/polylactic acid(BF/PLA) composites can effectively improve the toughness and other limitations of PLA while maintaining the fully biodegradable properties, and it also contributes to cost reduction. However, the poor interfacial compatibility between BF and PLA limits the further improvement of its performance. To solve this problem, a method of spraying modification for BF/PLA composite mat was used, and the effects of silane coupling agent KH560 volume fraction on the structure and properties of BF/PLA composite panels were investigated. The results showed that when the volume fraction of KH560 was 2% the BF/PLA composite panels exhibited the optimal comprehensive properties, with flexural strength of 32.7 MPa, tensile strength enhancement of 18.5%. Compared with the untreated composites, the initial decomposition temperature and the temperature at the maximum weight loss rate increased by 23.0 ℃ and 21.7 ℃, respectively, while the water absorption rate for 24 h declined to 21.2%.更多还原