Kim, Sung Ho Noh, Ye Ji Ko, Young Woung Kim, Seong Yun Youn, Jae Ryoun 2024-01-20T09:02:41Z 2024-01-20T09:02:41Z 2021-09-02 2014-09 0032-3888 https://pubs.kist.re.kr/handle/201004/126425 Thermoplastic carbon fiber fabric reinforced composites (CFFRCs) were prepared using a novel fast manufacturing process with a low viscosity polymerizable cyclic butylene terephthalate (CBT) resin. Structure and properties of the composites altered by thermal annealing were investigated to develop appropriate post processing of the CFFRCs for fast production and lowering the processing cost. Annealing at 200 degrees C for 120 min resulted in improved mechanical properties and thermal stability of the polymerized CBT (pCBT) based on differential scanning calorimetry, wide-angle X-ray diffraction, and thermo gravimetric analysis. The tensile strength of the CFFRC compression molded at 250 degrees C for 2 min was 440 MPa and that of the CFFRC annealed at 200 degrees C for 120 min after compression molding was 500 MPa, which is an improvement of 550 and 625% relative to the pCBT matrix, respectively. In addition, the thermal stability of the CFFRC annealed at 250 degrees C for 120 min improved by 10 degrees C. Therefore, tensile strength and thermal stability of the manufactured CFFRC can be improved by using the appropriate annealing conditions. (C) 2013 Society of Plastics Engineers English WILEY-BLACKWELL INSERT MOLDED PARTS REINFORCED COMPOSITES MECHANICAL-PROPERTIES MATRIX FILM Improved Tensile Strength and Thermal Stability of Thermoplastic Carbon Fiber Fabric Composites by Heat Induced Crystallization of In Situ Polymerizable Cyclic Butylene Terephthalate Oligomers Article 10.1002/pen.23765 1 POLYMER ENGINEERING AND SCIENCE, v.54, no.9, pp.2161 - 2169 POLYMER ENGINEERING AND SCIENCE 54 9 2161 2169 scie scopus 000342160900022 2-s2.0-84905905314 Engineering, Chemical Polymer Science Engineering Polymer Science Article INSERT MOLDED PARTS REINFORCED COMPOSITES MECHANICAL-PROPERTIES MATRIX FILM 탄소섬유복합소재 CFRP 탄소섬유 Carbon fiber 저점도 열가소성 수지 Cyclic butylene terephthalate 열처리 Anealing