Yield enhancement of matrix precursor in short carbon fiber reinforced randomly oriented carbon/carbon composite

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon Letters / 19권 / 1호
ㆍ저자명 : Thakur Sudesh Kumar Raunija, Sharad Chandra Sharma, Anil Verma

목차

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References

영어 초록

Isroaniso matrix precursor synthesized from commercially available petroleum pitch was
stabilized in air. The influence of oxygen mass gain during stabilization on the yield of
matrix precursor was studied. Additionally, the influence of pressure on the yield of the
stabilized matrix precursor in a real system was studied. The fourier transform infrared spectrometry
(FTIR), thermogravimetric analysis (TGA), yield, yield rate, and yield impact were
used to check the effect of stabilization and pressure on the yield of the matrix precursor and
the end properties of the composite thereafter. The results showed that the yield increased
with stabilization duration up to 20 h whereas it decreased for stabilization duration beyond
20 h. Further results showed that the stabilized matrix precursor for a duration of 5 h could
withstand almost two-fold greater hot-pressing pressure without resulting in exudation as
compared to that of a 1 h stabilized matrix precursor. The enhanced hot-pressing pressure
significantly improved the yield of the matrix precursor. As a consequence, the densification
and mechanical properties were increased significantly. Further, the matrix precursor
stabilized for a duration of 20 h or more failed to provide proper and uniform binding of the
reinforcement.

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