| 竹纤维碱化改性对竹纤维/聚丙烯复合材料性能的影响 |
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| 引用本文：黎晨欣,王爽,肖容慧,王利军,孔令学.竹纤维碱化改性对竹纤维/聚丙烯复合材料性能的影响[J].上海第二工业大学(中文版),2020,(4):279-285 |
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| 基金项目:上海第二工业大学研究生项目基金(EGD19YJ0084) 资助 |
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| 中文摘要:用不同浓度的NaOH 溶液对竹纤维(bamboo fiber, BF) 进行表面改性处理, 一定温度烘干后, 通过熔融挤出
制备了竹纤维/聚丙烯(BF/PP) 竹塑复合材料。采用示差同步扫描热分析仪(TG-DSC)、红外光谱(FTIR)、X 射线衍
射仪(XRD) 和扫描电镜(SEM) 等对预处理前后BF 的结构进行表征, 并研究了复合材料的力学性能。结果表明: 改
性后BF 的热稳定性升高, 形成疏松的纤维束; 复合材料的力学性能显著提高。其中用3% 的NaOH 溶液改性BF 制
备的复合材料的力学性能最佳, 冲击强度较纯PP 可提高100%, 屈服强度提高14.8%。复合材料冲击断面SEM 显
示, 一定浓度的NaOH 溶液改性可以明显提高BF 与PP 基体树脂间的相容性。 |
| 中文关键词:竹纤维 碱化改性 竹纤维/聚丙烯复合材料 力学性能 |
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| The Effect of Bamboo Fiber Alkalization Modification on the Performanceof Bamboo Fiber/Polypropylene Composites |
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| Abstract:Bamboo fiber (BF) was modified with different concentrations of NaOH solution, dried at a certain temperature, and then
BF/polypropylene (BF/PP) bamboo-plastic composites were prepared by melt extrusion. Differential synchronous scanning thermal
analyzer (TG-DSC), infrared spectroscopy (FTIR), X-ray diffractometer (XRD) and scanning electron microscope (SEM) were used to
characterize the structure of BF during the modification and the mechanical properties of composite materials were studied . The results
show that the thermal stability of the modified BF is increased and loose fiber bundles are formed; the mechanical properties of the
composite materials are significantly improved. It is worth mentioning that the mechanical properties of composite materials prepared
by modifying BF with 3% NaOH solution are the best. Compared with pure PP, the impact strength can be increased by 100%, and
the yield strength is increased by 14.8%. The composite impact section SEM showed that a certain concentration of NaOH solution
modification can efficiently promote the compatibility between BF and PP matrix resin. |
| keywords:bamboo fiber alkalization modification bamboo fiber/polypropylene composite mechanical properties |
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