Highly Conductive Fiberboards Made with Carbon and Wood Fibers

被引:0
作者
Hou, Junfeng [1 ]
Fu, Feng [1 ]
Lu, Keyang [1 ]
Chen, Lanzhen [2 ]
机构
[1] Chinese Acad Forestry, Res Inst Wood Ind, Key Lab Wood Sci & Technol State Forestry Adm, Beijing 100091, Peoples R China
[2] Chinese Acad Agr Sci, Bee Res Inst, Beijing, Peoples R China
来源
BIORESOURCES | 2015年 / 10卷 / 04期
关键词
Highly conductive fiberboard; Percolation effect; Negative pressure coefficient of resistance; Three-dimensional conductive network; Shielding performance; Mechanical properties; ELECTRICAL-CONDUCTIVITY; PIEZORESISTIVITY; PERCOLATION; COMPOSITE;
D O I
暂无
中图分类号
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号
0805 ; 080502 ; 0822 ;
摘要
Carbon fibers (CFs) were mixed with wood fibers using the solution blend method to make highly conductive fiberboards. The microstructure, conductivity, shielding effectiveness (SE), and mechanical properties of fiberboards filled with CFs of various lengths and contents were investigated. The uniform distribution of CFs formed an excellent, three-dimensional conductive network. The CF-filled fiberboards exhibited evidence of percolation and piezoresistivity. A greater content of shorter CFs was necessary to realize the effects of percolation. The corresponding thresholds of fiberboards containing CFs of 2, 5, and 10 mm in length were 1.5%, 0.75%, and 0.5%, respectively. The volume resistance of fiberboards tended to be stable as the external pressure increased to 1.4 MPa. The volume resistivity of fiberboards reached equilibrium when the CF content was 10%. The fiberboards with greater than 10% CF content exhibited a SE of 30 dB above the average, yet they met the requirements for commercial application. The mechanical properties of fiberboards were investigated, and CFs were found to enhance the modulus of rupture (MOR) and modulus of elasticity (MOE). Therefore, it was concluded that fiberboards containing CF of 5 mm in length exhibited the best performance between percolation threshold and steady CF content.
引用
收藏
页码:6348 / 6362
页数:15
相关论文
共 33 条
[1]   Electromagnetic energy radiated from mobile phone alters electrocardiographic records of patients with ischemic heart disease [J].
Alhusseiny, A. H. ;
Al-Nimer, M. S. ;
Majeed, A. D. .
ANNALS OF MEDICAL AND HEALTH SCIENCES RESEARCH, 2012, 2 (02) :146-151
[2]  
[Anonymous], 2013, 17657 GBT CHIN NAT S
[3]  
[Anonymous], 2001, MILDTL83528C AM NAT
[4]  
[Anonymous], 2007, D257 ASTM INT
[5]  
[Anonymous], 1995, SJ20524 PEOPL REP CH
[6]  
[Anonymous], 2006, D1037 ASTM INT
[7]   Electrical conductivity of self-monitoring CFRC [J].
Chiarello, M ;
Zinno, R .
CEMENT & CONCRETE COMPOSITES, 2005, 27 (04) :463-469
[8]   Carbon materials for structural self-sensing, electromagnetic shielding and thermal interfacing [J].
Chung, D. D. L. .
CARBON, 2012, 50 (09) :3342-3353
[9]  
Clayton R.P., 2006, Introduction to Electromagnetic Compatibility, V2nd
[10]   Effects of multi-walled carbon nanotube functionalization on the morphological and mechanical properties of nanocomposite foams based on poly(vinyl chloride)/(wood flour)/(multi-walled carbon nanotubes) [J].
Ghasemi, I. ;
Farsheh, A. T. ;
Masoomi, Z. .
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY, 2012, 18 (03) :161-167