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Open AccessArticle

Effect of Submicron Glass Fiber Modification on Mechanical Properties of Short Carbon Fiber Reinforced Polymer Composite with Different Fiber Length

1
Department of Mechanical and Systems Engineering, Graduate school/Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 602-8580, Japan
2
DIC Corporation, DIC Building, 7-20, Nihonbashi 3-chome, Chuo-ku, Tokyo 104-8404, Japan
*
Author to whom correspondence should be addressed.
J. Compos. Sci. 2020, 4(1), 5; https://doi.org/10.3390/jcs4010005
Received: 28 October 2019 / Revised: 15 December 2019 / Accepted: 25 December 2019 / Published: 2 January 2020
In this research, three kinds of carbon fiber (CF) with lengths of 1, 3, and 25 mm were prepared for processing composite. The effect of submicron glass fiber addition (sGF) on mechanical properties of composites with different CF lengths was investigated and compared throughout static tests (i.e., bending, tensile, and impact), as well as the tension-tension fatigue test. The strengths of composites increased with the increase of CF length. However, there was a significant improvement when the fiber length changed from 1 to 3 mm. The mechanical performance of 3 and 25 mm was almost the same when having an equal volume fraction, except for the impact resistance. Comparing the static strengths when varying the sGF content, an improvement of bending strength was confirmed when sGF was added into 1 mm composite due to toughened matrix. However, when longer fiber was used and fiber concentration was high, mechanical properties of composite were almost dependent on the CF. Therefore, the modification effect of matrix due to sGF addition disappeared. In contrast to the static strengths, the fatigue durability of composites increased proportionally to the content of glass fiber in the matrix, regardless to CF length. View Full-Text
Keywords: submicron glass fiber; vinyl ester matrix; short carbon fiber; composite modifier; mechanical property submicron glass fiber; vinyl ester matrix; short carbon fiber; composite modifier; mechanical property
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Nguyen, N.T.T.; Kiyotaka, O.; Kazuya, O.; Toru, F.; Ou, S.; Hidehiko, T.; Yukiko, F. Effect of Submicron Glass Fiber Modification on Mechanical Properties of Short Carbon Fiber Reinforced Polymer Composite with Different Fiber Length. J. Compos. Sci. 2020, 4, 5.

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