Preform-based toughening technology for RTMable high-temperature aerospace composites  

作　　者：YI XiaoSu CHENG QunFeng LIU ZhiZhen 

机构地区：[1]Beijing Institute of Aeronautical Materials,Beijing 100095,China

出　　处：《Science China(Technological Sciences)》2012年第8期2255-2263,共9页中国科学（技术科学英文版）

基　　金：supported by the National Basic Research Program of China ("973" Program) (Grant No. 2010CB631100)

摘　　要：This article describes the efforts that led to the development of surface-loaded preforms that may be used to significantly improve the compression-after-impact strength of high-temperature composites and correspondingly to dramatically reduce the area of damage because of impact.Moreover,by matching the toughening polymer surface-loaded and design of the surface pattern,in-plane mechanical properties are unaffected or even improved over laminates made from the identical materials.The proprietary preforms,so-called ESTM-Fabrics,may be handled and infused with the high-temperature RTMable resins such as bismaleimide and polyimide in exactly the same manner as traditional fabrics without surface modification.The RTM conditions for the preform-based toughening is fully compatible with the traditional process procedure,making the technology cost-effective in production.This technology represents a key enabler for the use of low-cost RTM processes for high-temperature resins to supplant prepreg as the building-block material of choice for aeronautical composite structures.

关 键 词：impact damage surface loading preform-based toughening BISMALEIMIDE POLYIMIDE fracture toughness 

分 类 号：TQ174.758[化学工程—陶瓷工业] V214.8[化学工程—硅酸盐工业]