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《工程塑料应用》 2021年第02期
DOI:10.3969/j.issn.1001-3539.2021.02.015
PVC/竹粉复合材料制备
玉澜1,陈燕萌1,黄祖强2,胡华宇2,张燕娟2
1.广西科技师范学院,广西来宾 546199; 2.广西大学化学化工学院,南宁 530004 
Preparation of PVC/Bamboo Powder Composites
Yu Lan1, Chen Yanmeng1, Huang Zuqiang2, Hu Huayu2, Zhang Yanjuan2
1. Guangxi Science & Technology Normal University, Laibin 546199, China; 2. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China 
摘要:在固相反应器中对竹粉进行机械活化乙酰化改性,将改性竹粉与聚氯乙烯(PVC)混合均匀,热压成型制备PVC/竹粉复合材料。考察催化剂浓硫酸用量、乙酸酐用量、机械活化时间和温度对复合材料力学性能的影响,并对改性前后的竹粉及其复合材料断面进行表征。结果表明,当乙酸酐与改性竹粉的物质的量之比为3.5∶1、机械活化温度为80℃、机械活化时间为60 min、催化剂浓硫酸用量为乙酸酐质量的0.5 %时,复合材料的弯曲强度为41.29 MPa,拉伸强度为20.87 MPa;傅立叶变换红外光谱分析表明,竹粉被成功进行乙酰化改性。X射线衍射分析表明,机械活化降低了竹粉结晶度,无定形区增加,提高了反应活性;扫描电子显微镜分析表明,在机械力作用下,竹粉纤维束被打断,比表面积增加;改性竹粉复合材料的断面形貌分析表明,竹粉在PVC中分散较均匀,无团聚现象,复合材料断面上没有空隙,改性竹粉与PVC粘结性较好。 
Abstract:Bamboo powders were modified by mechanical activation and acetylation in a solid state reactor. Then the modified bamboo powder and polyvinyl chloride (PVC) were mixed to prepare PVC/bamboo composites. The effects of catalyst concentrated sulfuric acid dosage, acetic anhydride dosage, mechanical activation time and mechanical activation temperature on the mechanical properties of composites were investigated. The products were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscope (SEM). The results show that the flexural strength of the PVC/bamboo powder composite is 41.29 MPa and the tensile strength is 20.87 MPa when the amount of substance ratio of acetic anhydride to bamboo powder is 3.5∶1, mechanical activation temperature ias 80℃and activation time is 60 min. The results of FTIR analysis show that the bamboo powder is successfully acetylated. XRD analysis results show that mechanical activation decreases crystallinity, increases amorphous region, and improves reactivity. SEM analysis results show that the bamboo fiber bundles are broken and the specific surface area increases under the action of mechanical force. The analysis of the section morphology of the composites show that the bamboo powder in PVC is uniformly distributed without agglomeration and there are no voids in the composite section, and the adhesion between modified bamboo powder and PVC is good. 
关键词:机械活化;竹粉;聚氯乙烯;复合材料 
Keywords:mechanical activation; bamboo powder; polyvinyl chloride; composite 
基金:广西来宾市科技局(来科转193212),广西糖资源工程技术研究中心培育建设项目(桂科AD16450040) 
本文引用格式:
玉澜,陈燕萌,黄祖强,等. PVC/竹粉复合材料制备[J].工程塑料应用,2021,49(2):86-91.
Yu Lan,Chen Yanmeng,Huang Zuqiang,et al. Preparation of PVC/bamboo powder composites[J]. Engineering Plastics Application,2021,49(2):86-91. 

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