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当前位置: 首页 > 文章 > 纳米SiO_2-APP对木塑复合材料界面特性及力学性能的影响 北京林业大学学报 2013,35 (5) 117-122
Position: Home > Articles > Effects of nano SiO_2-ammonium polyphosphate on the interfacial and mechanical properties of wood fiber-polyethylene composites Journal of Beijing Forestry University 2013,35 (5) 117-122

纳米SiO_2-APP对木塑复合材料界面特性及力学性能的影响

作  者：
潘明珠;梅长彤
单  位：
江苏省速生木材与农作物秸秆材料工程技术研究中心;南京林业大学木材工业学院
关键词：
木塑复合材料;纳米二氧化硅;聚磷酸铵;力学性能;界面形貌
摘  要：
用聚磷酸铵(APP)与阻燃协效剂纳米二氧化硅(SiO2)制备了阻燃型木塑复合材料,并利用FTIR、SEM和力学性能测试仪,探讨纳米SiO2的添加量(2%、4%、6%)和APP的添加量(8%、10%、12%)对木塑复合材料的界面性能和力学性能的影响。结果表明:1)当纳米SiO2添加量为2%~6%、APP添加量为8%~10%时,两者可以均匀地分布在木塑复合材料的孔隙中,并且纳米SiO2可以与木质纤维形成Si—O—C结合,改善复合材料的界面性能;但是,APP添加量增加至12%时,纳米SiO2和APP之间会发生团聚,降低了复合材料的性能。2)当纳米SiO2添加量为2%~6%、APP添加量为8%~10%时,木塑复合材料的拉伸强度和弯曲强度均比未添加纳米SiO2、APP的有所增加,拉伸断裂伸长率基本保持不变,冲击强度降低。通过双因素方差分析可知,纳米SiO2、APP的添加量以及两者之间的交互作用对拉伸性能、弯曲性能无显著影响,但APP的添加量以及两者之间的交互作用对冲击强度有显著影响。
译  名：
Effects of nano SiO_2-ammonium polyphosphate on the interfacial and mechanical properties of wood fiber-polyethylene composites
作  者：
PAN Ming-zhu;MEI Chang-tong;College of Wood Science and Technology,Engineering Research Center of Fast-growing Trees and Agri-fiber Materials,Nanjing Forestry University;
关键词：
WPCs;;nano SiO2;;APP;;mechanical properties;;interfacial morphology
摘  要：
Wood fiber-high density polyethylene composites(WPCs) with nano silicon dioxide(nano-SiO2,2%,4%,6%) and ammonium polyphosphate(APP,8%,10%,12%) were prepared to investigate the synergistic effects on interfacial and mechanical properties in WPCs using Fourier infrared(FTIR) spectroscopy,scanning electron microscopy(SEM) and mechanical measurements.Results showed that: 1) SEM observation on the fracture surface of the composites indicated that APP and nano-SiO 2 exhibited uniform diffusion in WPCs with 2%-6% nano-SiO2 and 8%-10% APP.And the presence of Si—O—C in WPCs due to interactions between nano-SiO2 and wood fiber could improve the interfacial characteristics.However,the agglomeration was observed in WPCs with 12% APP.2) With incorporation of 2%-6% nano-SiO2 and 8%-10% APP,WPCs showed the higher tensile and flexural strength,similar tensile elongation at break,and lower impact strength.The results of two-way ANOVA analysis showed that the differences in the tensile strength,tensile elongation at break,and flexural strength were not significant among nano SiO2 addition,APP addition and interactions between nano SiO 2 and APP at the level of 0.05,while impact strength showed the significant differences among them at the level of 0.05.

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