摘要
采用微生物法对竹纤维进行改性,研究其对竹纤维成分及结构的影响,通过热压成型制备了不同竹塑配比的竹纤维增强聚丙烯复合材料(PP/BF),并对其力学性能、断面微观结构进行表征来探讨竹纤维对聚丙烯基体的增强性能。结果表明:微生物改性能有效去除纤维素表面部分的半纤维素、木质素等成分,并在一定程度上降低了竹纤维的极性,改善了竹纤维与聚丙烯基体的界面浸润性。所得的竹塑复合材料以竹纤维添加量为30%时,力学性能最优,其拉伸强度、弹性模量较纯聚丙烯材料分别增强了3.4%、29.4%,弯曲强度、弯曲模量分别提高了38.9%、37.5%。
The microorganism modification method was adopted for bamboo fiber modification, and its effects on the component and structure were studied. Bamboo fiber （BF） reinforced polypropylene （PP） composite with different BF/BP ratios were prepared through hot compression molding, and their mechanical properties and sectional microstructure were characterized to evaluate the enhancement effect caused by bamboo fibres. The result showed that the microbial modification of bamboo fiber modification could effectively remove part of the hemicellulose,lignin and hemicellulose and other ingredients. To some extent,it reduced the polarity of bamboo fibers and improved the interface bonding strength between BF and PP. Tensile strength and elastic modulus of BF/PP showed the highest values with the the addition of 30% of bamboo fiber, and these values were increased by 6. 1% and 29.4% ,respectively, in comparison with the pure PP. The flexural strength and flexural modulus increased by 38.9% and 37.5% ,respectively.
出处
《塑料》
CAS
CSCD
北大核心
2017年第1期1-4,8,共5页
Plastics
基金
浙江省省院合作林业科技项目(2013SY05)
关键词
竹纤维
竹塑复合
微生物改性技术
界面强度
力学性能
bamboo fiber
PP/BF composite
microbial modified technique
interfacial strength
mechanical property
