摘要
我国的麻类资源非常丰富,将麻纤维用于复合材料的制备能扩大麻纤维的应用范围,有效提高麻纤维的使用价值。将苘麻纤维(AF)作为增强材料,通过热压工艺制备了苘麻/聚乙烯(PE)复合材,并探讨了该复合材的各项性能。通过热重分析确定了苘麻纤维的加工温度为180℃,对比分析AF/PE复合材的力学性能,确定制备复合材时AF含量控制在60%范围内能得到性能优异的复合材,AF与PE的最佳质量比为55∶45。苘麻纤维经硅烷偶联剂处理后,AF/PE复合材的弯曲性能和拉伸性能都有明显提高,吸水厚度膨胀率明显降低。由红外光谱分析发现,硅烷偶联剂与苘麻纤维表面的羟基发生化学反应生成了硅-氧-碳共价键,硅烷偶联剂使麻纤维表层与PE基质层之间产生分子结合,因此提高了PE基质与苘麻纤维的结合强度。
There are very abundant resources of bast fiber in China.Introducing AF to composite area can enlarge its application and increase its economic value.In this paper,AF was used to reinforce polyethylene （PE） to produce AF/PE composites by hot-pressing process,and explored various properties of this composites.Hot pressing temperature for producing the composite was finally determined at 180 ℃ by Thermogravimetric analysis.By analysing AF/PE composites mechanical properties and microstructure,these conclusions were obtained：the composite presented good properties when AF content was limited within 60％ in the composites ; the best performance was obtained when the content of AF was 55％.When AF was treated with silane coupling agent,the bending property and tensile property of the AF/PE composites were improved obviously,thickness swelling caused by water absorption were decreased obviously.Based on FTIR spectra we know that silane coupling agent could react with the hydroxyl groups on the surface of AF and improve the compatibility between the AF and PE.
出处
《安徽农业科学》
CAS
2014年第27期9509-9512,9618,共5页
Journal of Anhui Agricultural Sciences
基金
国家林业公益性行业科研专项经费项目(201204802)
关键词
苘麻纤维
聚乙烯
复合材料
性能
硅烷偶联剂
Abutilon theophrasti fiber
Polyethylene
Composite
Property
Silane coupling agent
