Effect of physicochemical structure of natural fiber on transverse thermal conductivity of unidirectional abaca/bamboo fiber composites

2012 ◽  
Vol 43 (8) ◽  
pp. 1234-1241 ◽  
Author(s):  
Ke Liu ◽  
Hitoshi Takagi ◽  
Ryosuke Osugi ◽  
Zhimao Yang
Keyword(s):  
Thermal Conductivity ◽  
Natural Fiber ◽  
Fiber Composites ◽  
Bamboo Fiber ◽  
Transverse Thermal Conductivity ◽  
Physicochemical Structure

Bounds on the Transverse Effective Conductivity of Computer-Generated Fiber Composites

1982 ◽  
Vol 49 (2) ◽  
pp. 319-326 ◽  
Author(s):  
J. J. McCoy
Keyword(s):  
Thermal Conductivity ◽  
Effective Conductivity ◽  
Fiber Composite ◽  
Effective Property ◽  
Fiber Composites ◽  
Area Fraction ◽  
Fiber Area ◽  
Single Body ◽  
Transverse Thermal Conductivity ◽  
Dilute Suspension

Using trial functions that are motivated by single-body calculations, we have derived bounds on the effective transverse thermal conductivity of a fiber composite. These bounds incorporate both fiber area fraction information and some information of the configurational statistics. Simplified expressions for the bounds are obtained for the limits of widely differing conductivity values for the constitutent phases, and of a dilute suspension. The bounds are made specific for a given computer-generated fiber composite and these specific bounds are compared with the best available bounds that require area fraction information alone. The conclusions reached are that configuration statistics are significant for effective property calculations for moderately dense composites for component conductivity values that differ by some one to two orders of magnitude, or greater. Further, the bounds based on the single-body calculation are reasonably close for component conductivity values that differ by some two orders of magnitude, or less.

scholarly journals Hybrid boron nitride-natural fiber composites for enhanced thermal conductivity

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Changlei Xia ◽  
Andres C. Garcia ◽  
Sheldon Q. Shi ◽  
Ying Qiu ◽  
Nathaniel Warner ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Natural Fiber ◽  
Fiber Composites ◽  
Natural Fiber Composites ◽  
Enhanced Thermal Conductivity

Thermal conductivity of PLA-bamboo fiber composites

2007 ◽  
Vol 16 (4) ◽  
pp. 377-384 ◽  
Author(s):  
Hitoshi Takagi ◽  
Shuhei Kako ◽  
Koji Kusano ◽  
Akiharu Ousaka
Keyword(s):  
Thermal Conductivity ◽  
Fiber Composites ◽  
Bamboo Fiber

Effect of Lumen Size on Transverse Thermal Conductivity of Unidirectional Natural Fiber-Polymer Composite via Finite Element Method

2011 ◽  
Vol 675-677 ◽  
pp. 431-434
Author(s):  
Ke Liu ◽  
Hitoshi Takagi ◽  
Zhi Mao Yang
Keyword(s):  
Thermal Conductivity ◽  
Finite Element Method ◽  
Finite Element ◽  
Polymer Composite ◽  
Natural Fiber ◽  
Volume Fraction ◽  
Cell Model ◽  
Insulation Material ◽  
Transverse Thermal Conductivity ◽  
Element Method

In order to evaluate the effect of natural fiber lumen size on the transverse thermal conductivity of the unidirectional natural fiber-polymer composite, a two-dimensional unit cell model of natural fiber-polymer composite was studied using finite element method (FEM). In this study, the FE cell model was kept in the steady state thermal condition. The results showed that the effective transverse thermal conductivity K has a relationship with the geometrical ratio (α, 0<α<1) of lumen radius (rl) to fiber radius (rf). When the lumen size ratio α is small, K increases with increasing fiber volume fraction Vf, while K decreases as the Vf increases when α is large. It indicates that the thermal property of composites changes with fiber’s lumen size. When a composite is designed for thermal insulation material, we should choose the natural fiber with large lumen, and to design thermal conductive composite, small lumen size should be used. The result from present method was compared with experimental data and shows a good agreement.

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