scholarly journals Effects of Dry Treatment Condition on Mechanical Properties of Carbon Fiber/Ceramic Composite Using Aluminum Phosphate

1997 ◽  
Vol 105 (1218) ◽  
pp. 179-182 ◽  
Author(s):  
Shinsuke HOSHII ◽  
Akira KOJIMA ◽  
Sugio OTANI
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Treatment Condition ◽  
Ceramic Composite ◽  
Aluminum Phosphate

Mechanical properties and oxidation resistivity of carbon fiber/ceramic composites prepared from borosiloxane

1996 ◽  
Vol 11 (10) ◽  
pp. 2536-2540 ◽  
Author(s):  
Shinsuke Hoshii ◽  
Akira Kojima ◽  
Sugio Otani
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Ceramic Composite ◽  
Boron Content ◽  
Infrared Absorption Spectrum ◽  
Ceramic Composites ◽  
Molecular Weights ◽  
Molar Ratios ◽  
High Boron ◽  
Si Content

Diphenylborosiloxane (PBS), an organometallic compound with Si–O–B bonds, was compounded with carbon fiber (CF) to form CF/ceramic composite. Three types of PBS with different molar ratios (Si/B) in the materials were used. On the PBS obtained, specific gravity, Si content, molecular weight, melting point, and infrared absorption spectrum were measured. On the basis of these results, structures of PBS were examined, which clarified that the PBS thus synthesized consisted of several components with different molecular weights. Mechanical properties and oxidation resistivity of the CF/ceramic composites obtained differed with the Si/B ratios of PBS. Mechanical strength of the CF/ceramic composites increased with increase of Si content of PBS. It was also found that, when PBS with high boron content was used, compact vitreous film consisting mainly of B2O3 was formed over the composite. Due to the formation of this film, oxidation resistivity of the composite was improved.

scholarly journals Undergraduate Research Program to Recycle Composite Waste

2021 ◽  
Vol 11 (7) ◽  
pp. 354
Author(s):  
Waleed Ahmed ◽  
Essam Zaneldin ◽  
Amged Al Hassan
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Carbon Fiber ◽  
Undergraduate Students ◽  
Research Program ◽  
Modulus Of Elasticity ◽  
Undergraduate Research ◽  
Undergraduate Research Program ◽  
Structural Applications ◽  
Cfrp Composite

With the rapid growth in the manufacturing industry and increased urbanization, higher amounts of composite material waste are being produced, causing severe threats to the environment. These environmental concerns, coupled with the fact that undergraduate students typically have minimal experience in research, have initiated the need at the UAE University to promote research among undergraduate students, leading to the development of a summer undergraduate research program. In this study, a recycling methodology is presented to test lab-fabricated Carbon-Fiber-Reinforced Polymer (CFRP) for potential applications in industrial composite waste. The work was conducted by two groups of undergraduate students at the UAE University. The methodology involved the chemical dissolution of the composite waste, followed by compression molding and adequate heat treatment for rapid curing of CFRP. Subsequently, the CFRP samples were divided into three groups based on their geometrical distinctions. The mechanical properties (i.e., modulus of elasticity and compressive strength) were determined through material testing, and the results were then compared with steel for prompt reference. The results revealed that the values of mechanical properties range from 2 to 4.3 GPa for the modulus of elasticity and from 203.7 to 301.5 MPa for the compressive strength. These values are considered competitive and optimal, and as such, carbon fiber waste can be used as an alternate material for various structural applications. The inconsistencies in the values are due to discrepancies in the procedure as a result of the lack of specialized equipment for handling CFRP waste material. The study concluded that the properties of CFRP composite prepreg scrap tend to be reusable instead of disposable. Despite the meager experimental discrepancies, test values and mechanical properties indicate that CFRP composite can be successfully used as a material for nonstructural applications.

scholarly journals Simultaneous PAN Carbonization and Ceramic Sintering for Fabricating Carbon Fiber-Ceramic Composite Heaters

2019 ◽  
Vol 9 (22) ◽  
pp. 4945 ◽  
Author(s):  
Daiqi Li ◽  
Bin Tang ◽  
Xi Lu ◽  
Quanxiang Li ◽  
Wu Chen ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Thermal Performance ◽  
Ceramic Composite ◽  
Ceramic Composites ◽  
Indoor Climate ◽  
Climate Control ◽  
Ceramic Tiles ◽  
Ceramic Sintering ◽  
Physical Features ◽  
Pan Fibers

In this study, a single firing was used to convert stabilized polyacrylonitrile (PAN) fibers and ceramic forming materials (kaolin, feldspar, and quartz) into carbon fiber/ceramic composites. For the first time, PAN carbonization and ceramic sintering were achieved simultaneously in one thermal cycle and the microscopic morphologies and physical features of the obtained carbon fiber/ceramic composites were characterized in detail. The obtained carbon fiber/ceramic composite showed comparable flexural strength as commercial ceramic tiles. Meanwhile, the composite showed exceptional electro-thermal performance based on the electro-thermal performance of the carbonized PAN fibers, which could reach 108 ℃ after 15 s, 204 ℃ after 90 s, and 292 ℃ after 450 s at 5 V (2.6 A), thereby making the ceramic composite a good candidate as an indoor climate control heater, defogger device, kettle, and other heating element.

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