三维管状编织复合材料的制备及轴向压缩性能研究

Preparation of Tubular Three-dimension Braided Composites and Study on Axial-direction Compressive Properties Thereof

采用1 200tex的E-Glass纤维为原料,利用3DB-J100-8型模块式三维编织平台制备三维四向、三维五向管状编织物;以E51环氧树脂、H023聚醚胺组成树脂体系,与上述编织物复合制成三维管状编织复合材料;利用Instron 3385H型万能材料试验机测试材料的轴向压缩性能,观察材料压缩特性,并研究编织结构、编织角等结构参数对材料轴向压缩性能的影响。结果表明,三维管状编织复合材料的破坏特性表现为明显的脆性破坏;同时,材料破坏形式主要表现为树脂开裂、纤维断裂、界面脱粘等。三维四向、三维五向管状编织复合材料的轴向压缩性能均随着编织角增加而增强;三维五向编织结构轴向压缩性能明显好于三维四向结构。研究结果将为该类材料的结构优化设计和性能分析奠定理论基础。

Tubular three-dimensional four-direction（3D4D）and three-dimensional fivedirection（3D5D）braided fabrics were prepared from E-Glass fibers（1 200tex）with 3DBJ100-8modular three-dimensional braiding machine;resin system was composed with epoxy resin E51 and polyethenoxyamines H023,which,together with the foregoing braided fabrics, was made into tubular three-dimensional braided composites（3D braided composites）;axial-direction compressive properties of the 3Dbraided composites were tested with 3385 HInstron universal material testing machine,the compression characteristics of the 3Dbraided composites were observed,and the influence of structure parameters（such as braided structure and braided angles）on axial-direction compressive properties of the composites was studied.The results show that the tubular 3D braided composites suffers from obvious brittle failure,of which the concrete phenomena include resin fracture,fiber breakage and interface debonding,etc.The axial-direction compressive properties of both3D4 Dand 3D5Dbraided composites are enhanced with the increase of braided angles;the axial-direction compressive properties of 3D5 D braided composites are significantly better than that of 3D4 D.The results will lay a theoretical basis for structure optimization design and performance analysis of such materials.