کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
821688 | 1469562 | 2007 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of γ-ray irradiation grafting on the carbon fibers and interfacial adhesion of epoxy composites Effect of γ-ray irradiation grafting on the carbon fibers and interfacial adhesion of epoxy composites](/preview/png/821688.png)
A special technique using γ-ray irradiation-induced graft-polymerization was applied to carbon fibers. Epoxy resin and chloroepoxy propane reacted with carbon fibers by a co-irradiation grafting method and acrylic acid was graft-polymerized onto the fiber surface via a pre-irradiation grafting method. The roughness, amount of containing-oxygen functional groups and surface energy were all found to increase significantly after irradiation grafting. Gamma-ray irradiation grafting improved marginally the tensile strength of carbon fibers, which was evaluated by statistical analysis using the Weibull distribution. The interlaminar shear strength of treated carbon fiber/epoxy was enhanced by at least 17.5%, compared with that of untreated carbon fiber/epoxy. The mechanisms of irradiation grafting are proposed by radical reactions. The γ-ray co-irradiation grafting and pre-irradiation grafting are both an effective method for modifying the physicochemical properties of carbon fibers and improving the interfacial adhesion of composites.
Journal: Composites Science and Technology - Volume 67, Issues 15–16, December 2007, Pages 3261–3270