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Investigation of optimal lamination condition of CFRTP by compression molding method and a comparison of mechanical properties with CFRTS
Advances in Mechanical Engineering ( IF 1.9 ) Pub Date : 2020-12-28 , DOI: 10.1177/1687814020986252
Dae Won Kim 1 , Chul Kyu Jin 2 , Min Sik Lee 1 , Chung Gil Kang 3 , Hyung Yoon Seo 4
Affiliation  

The variables of die temperature, pressure, time, lamination method, and forming count are applied to fabricate thermosoftening CFRP (CFRTP) with compression molding method. The mechanical properties of CFRTP are compared with those of thermosetting CFRP (CFRTS). The first lamination method is that one hotmelt is inserted into carbon fiber (five carbon fibers and four hotmelts). The optimal lamination conditions are the die temperature of 220°C, pressure of 6 MPa, and pressurization time for 10 min. The tensile strength of CFRTP of this lamination method is 400 MPa. For higher tensile strength value, the second lamination method was applied. CFRTP prepreg was prepared with one hotmelt and one carbon fiber by applying die temperature at optimal lamination conditions. Five CFRTP prepregs were laminated under the same conditions. When the CFRTP sheet was three formings, the tensile strength of 494 MPa could be obtained. CFRTS are prepared by laminating the epoxy prepregs at 140°C with the compressive pressure of 0.5 MPa for 30 min. CFRTP sheet has the lower tensile strength than CFRTS sheet by 223 MPa, but the flexural strength was higher by 61 MPa and by 1.0 J/cm2 for Charpy impact test.



中文翻译:

压缩成型法研究CFRTP的最佳层压条件,并与CFRTS进行力学性能比较

模具温度,压力,时间,层压方法和成型次数的变量被应用于通过压模方法制造热软化CFRP(CFRTP)。将CFRTP的机械性能与热固性CFRP(CFRTS)的机械性能进行了比较。第一种层压方法是将一根热熔胶插入碳纤维中(五根碳纤维和四根热熔胶)。最佳的层压条件是模具温度为220°C,压力为6 MPa,加压时间为10分钟。该层压方法的CFRTP的抗拉强度为400MPa。为了获得更高的拉伸强度值,应用了第二层压方法。通过在最佳层压条件下施加模头温度,用一种热熔体和一种碳纤维制备CFRTP预浸料。在相同条件下层压五种CFRTP预浸料。当CFRTP片材为三个成型体时,可获得494MPa的拉伸强度。CFRTS是通过在140℃,0.5 MPa的压缩压力下层压环氧预浸料30分钟来制备的。CFRTP板的抗拉强度比CFRTS板低223 MPa,但抗弯强度高61 MPa和1.0 J / cm2用于夏比冲击试验。

更新日期:2020-12-28
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