کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
821456 | 906760 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effects of moisture and UV exposure on liquid molded carbon fabric reinforced nylon 6 composite laminates Effects of moisture and UV exposure on liquid molded carbon fabric reinforced nylon 6 composite laminates](/preview/png/821456.png)
Liquid molding of thermoplastics has been limited by high resin viscosity, high temperature processing requirements, and a short processing window [Sibal PW, Camargo RE, Macosko CW. Designing nylon 6 polymerization for RIM. In: Proceedings of the second international conference on reactive processing of polymers, Pittsburgh, PA; 1982, p. 97–125.]. The processing parameters for vacuum assisted resin transfer molding (VARTM) developed by the authors and previously reported [Pillay S, Vaidya UK, Janowski GM. Liquid molding of carbon fabric-reinforced nylon matrix composite laminates. J Thermoplast Compos Mater 2005;18:509–27] have been adapted to process carbon/nylon 6 composite panels. The present work addresses the effects of moisture and ultraviolet (UV) exposure on the static and dynamic mechanical properties of carbon fabric reinforced, thermoplastic polyamide 6 matrix panels processed using VARTM. The Bao and Yee dual diffusivity model [Bao LR, Yee AF. Moisture diffusion and hygrothermal aging in bismaleimide matrix carbon fiber composites: Part II – Woven and hybrid composites. Compos Sci Technol 2002;62:2111–9] was applied to evaluate the moisture uptake for the C/PA6, fully immersed in distilled water at 100 °C. SEM results show that moisture exposure result in surface micro-cracks compromise of the fiber–matrix interface. The flexural strength is lowered by 45%, after exposure to moisture at 100 °C. UV exposure up to 600 h causes yellowing of the samples and an increase in crystallinity from 40% to 44%.
Journal: Composites Science and Technology - Volume 69, Issue 6, May 2009, Pages 839–846