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Study on the Preparation of Carbon Fiber Reinforced Thermoplastic Composites by Papermaking Method |
Received:February 06, 2021 |
DOI:10.11980/j.issn.0254-508X.2021.06.003 |
Key Words:carbon fiber thermoplastic composites mechanical properties |
Fund Project:国家重点研发计划“十三五”重点基础材料技术提升与产业化专项(2017YFB0308205)。 |
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Abstract:Carbon fiber reinforced thermoplastic composite (CFRTP) was prepared by conventional papermaking process using carbon fiber as the reinforcer and polypropylene (PP) fibers as the substrate. The effects of the dosage and length of carbon fiber, hot pressing temperature and time on the mechanical properties of the CFRTP composites were investigated through orthogonal experiment. The results showed that carbon fiber dosage was the main factor affecting the mechanical properties of CFRTP. When carbon fiber dosage was 20%, length was 5 mm, and hot pressing temperature was 190℃ and hot pressing time was 10 min, the performance of CFRTP was the best, with a tensile strength of 83.9 MPa, bending strength of 52.5 MPa, and notched impact toughness of 48.2 kJ/m2, which increased by 189%, 52%, and 1021%, respectively, compared with the sample without adding carbon fiber prepared under the same conditions. Meanwhile, the influence of carbon fiber content on the mechanical properties of the CFRTP composite was explored through single factor test. The results showed that tensile strength, bending strength, and notched impact toughness of CFRTP composite increased first and then decreased with increasing carbon fiber content. |
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