Detection of electrochemical migration growth along the thickness direction in a paper/phenol-resin composite

2010 ◽  
Author(s):  
Hiroki Asakawa ◽  
Masashi Natsui ◽  
Yoshimichi Ohki ◽  
Toshikatsu Tanaka ◽  
Takashi Maeno ◽  
...  
Keyword(s):  
Resin Composite ◽  
Electrochemical Migration ◽  
Thickness Direction ◽  
Phenol Resin

Microstructure and Properties of Porous CMCs Prepared by HIPing the Pyrolyzed ZrO2/ Si / Phenol Resin Composite

2007 ◽  
Vol 561-565 ◽  
pp. 747-750 ◽  
Author(s):  
Muhammad Akhtar Sharif ◽  
Hidekazu Sueyoshi
Keyword(s):  
Phenolic Resin ◽  
Resin Composite ◽  
Atomic Ratio ◽  
Argon Atmosphere ◽  
Second Step ◽  
Resin Composites ◽  
Maximum Hardness ◽  
Phenol Resin ◽  
Microstructure And Properties ◽  
Bulk Hardness

A novel two-step process was used to investigate the microstructure and properties of porous CMCs prepared by HIPing the pyrolyzed composites of commercially available ZrO2 (TZ- 3YS), silicon powders and phenolic resin. In the first step, preforms with 70, 80 and 90 mass % of ZrO2 powders were prepared by the pyrolysis of ZrO2 / Si / Phenol Resin composites at 850 oC in vacuum. And, then the pyrolyzed preforms were HIPed at 1400 oC for 30 minutes in Argon atmosphere under a pressure of 50 MPa to fabricate the porous CMCs, in the second step. XRD analyses suggested the formation of β-SiC in the composites below the melting point of silicon. SEM photographs showed that spherical pores of several μm in diameter were uniformly distributed in the matrices of composites and crystals of β-SiC with facets were observed in the pores. EDS analyses showed that the crystals were composed of Si and C with 1 : 1 atomic ratio suggesting that crystal are SiC. The maximum hardness (13.78 GPa) was achieved from the composite with 90 mass % ZrO2, which is more than that of bulk hardness of ZrO2 (10-12 GPa).

scholarly journals Mechanical Properties of a Carbonized Bamboo Flour/Phenol Resin Composite

2016 ◽  
Vol 41 (4) ◽  
pp. 393-396
Author(s):  
Sota Inanaga ◽  
Hamdi Bin Rimfiel ◽  
Junji Noda ◽  
Koichi Goda ◽  
Toshihiro Okabe
Keyword(s):  
Mechanical Properties ◽  
Resin Composite ◽  
Phenol Resin ◽  
Bamboo Flour

Chemical Characterization of Calcium Aluminate-Phenol Resin Composite

1997 ◽  
Vol 6 (2) ◽  
pp. 45-52 ◽  
Author(s):  
Game Kankanamge Dinilprem Pushpalal ◽  
Toshio Kawano ◽  
Tadashi Kobayashi ◽  
Masaki Hasegawa
Keyword(s):  
Calcium Aluminate ◽  
Resin Composite ◽  
Chemical Characterization ◽  
Phenol Resin

Silicification of wood-cell walls

1994 ◽  
Vol 52 ◽  
pp. 428-429
Author(s):  
S. E. Keckler ◽  
D. M. Dabbs ◽  
N. Yao ◽  
I. A. Aksay
Keyword(s):  
Electron Microscopy ◽  
Cell Wall ◽  
Cell Walls ◽  
Lignin Content ◽  
Resin Composite ◽  
Middle Lamella ◽  
Cellulose Fibers ◽  
Complex Structures ◽  
Rich Region ◽  
Inorganic Precursors

Cellular organic structures such as wood can be used as scaffolds for the synthesis of complex structures of organic/ceramic nanocomposites. The wood cell is a fiber-reinforced resin composite of cellulose fibers in a lignin matrix. A single cell wall, containing several layers of different fiber orientations and lignin content, is separated from its neighboring wall by the middle lamella, a lignin-rich region. In order to achieve total mineralization, deposition on and in the cell wall must be achieved. Geological fossilization of wood occurs as permineralization (filling the void spaces with mineral) and petrifaction (mineralizing the cell wall as the organic component decays) through infiltration of wood with inorganics after growth. Conversely, living plants can incorporate inorganics into their cells and in some cases into the cell walls during growth. In a recent study, we mimicked geological fossilization by infiltrating inorganic precursors into wood cells in order to enhance the properties of wood. In the current work, we use electron microscopy to examine the structure of silica formed in the cell walls after infiltration of tetraethoxysilane (TEOS).

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