Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Forestry Engineering》 2018-01
Add to Favorite Get Latest Update

Effect of pretreatment of eucalyptus fiber on properties of composite phenolic foams

MA Yufeng;GENG Xiang;WANG Chunpeng;CHU Fuxiang;College of Materials Science and Engineering,Nanjing Forestry University;Institute of Chemical Industry of Forestry Products,CAF;Chinese Academy of Forestry;  
Eucalyptus fiber-phenolic foam composites were prepared by the eucalyptus fibers,which were pre-treated with γ-amino propyl triethoxy silane( KH-550) and the combined method of alkali liquorto and KH-550. The effects of pretreatment methods on the molecular structure,crystallization and microstructure properties of eucalyptus fibers,mechanical properties,flammability property,thermal conductivity and microstructure of foam composites were studied. The results showed that the microstructure of eucalyptus fiber was changed,and crystallinity increased. The interfacial compatibility was significantly improved between eucalyptus fibers and phenolic resin. Various properties of foam composites were improved to some extent. The maximum bending and compression strength increased by about45% and 112%,respectively. The pulverization rate,thermal conductivity and the size of bubble hole decreased by80.3%,6.8% and 300.0%,respectively. However,no improvement in flame retardancy was found after the pretreatment because the maximum limited oxygen index of the foam composite reduced by 13.4%. In summary,the results of comprehensive analysis indicated that the performances of foam composites made from KH-550 pretreated fibers were better than that of other methods,and the dosage of fibers should be controlled within 5%.
【Fund】: 江苏省自然科学青年基金(BK20140978);; 南京林业大学青年科技创新基金(CX2016011);南京林业大学高学历人才基金(GXL2014033);; 江苏高校优势学科建设工程资助项目(PAPD)
【CateGory Index】: TB33
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved