为研究液体模塑成型过程中树脂流体在面内流动渗透的情况,基于2D径向测试方法,采用布置线性传感器的2D渗透率测试装置,研究了织物预型件的不同缝编铺敷工艺对织物面内渗透性的影响.结果表明,不同缝编方式、铺敷形式及粘合剂处理对碳纤维织物内部流动行为和渗透性的影响显著.当缝编和铺敷加工而形成的流道与纤维束方向一致时,单向渗透率较高,但主渗透率K、K2相差较大,各向异性系数较低.当流道与纤维束方向呈一定角度时,主渗透率差异性减小,面内渗透各向同性提高.热熔性粘合剂会在加工过程中产生粘结反应,粘合剂颗粒大小及分布的变化会改变织物内部及层间孔隙的尺寸效应.粘合剂反应融化后会形成团片状粘附在纤维束的表面,分布更加离散化,从而形成较大的沟槽和孔隙尺寸,使得渗透率提高.
参考文献
| [1] | T. Stoven;F. Weyrauch;P. Mitschang .Continuous monitoring of three-dimensional resin flow through a fibre preform[J].Composites, Part A. Applied science and manufacturing,2003(6):475-480. |
| [2] | WONG CC .Modelling the Effects of Textile Preform Architecture on Permeability[D].University of Nottingham,2006. |
| [3] | 蒋金华,汪泽幸,陈南梁.LCM中织物结构对3D渗透性的影响[J].玻璃钢/复合材料,2012(05):80-84,23. |
| [4] | 曹瑞谦,胡红,罗永康.针织结构对复合材料渗透率的影响研究[J].玻璃钢/复合材料,2010(03):48-51. |
| [5] | 简抗抗,张佐光,顾轶卓,孙志杰.不同纤维堆积状态下饱和渗透率实验研究[J].复合材料学报,2006(01):31-36. |
| [6] | 邵雪明,杨娅君,胡金莲.不同布置缝合纱线对预制件渗透性的影响[J].纺织学报,2003(03):19-21. |
| [7] | A. Endruweit;P. McGregor;A.C. Long .Influence of the fabric architecture on the variations in experimentally determined in-plane permeability values[J].Composites science and technology,2006(11/12):1778-1792. |
| [8] | BICKERTON S;SOZER EM;SIMACEK PS;ADVANI SG .Fabric Structure and Mold Curvature Effects on Preform Permeability and Mold Filling in the RTM Process.Part Ⅱ.Predictions and Comparisons with Experiments[J].COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING,2000,31:438-458. |
| [9] | Georg Bechtold;Lin Ye .Influence of fibre distribution on the transverse flow permeability in fibre bundles[J].Composites science and technology,2003(14):2069-2079. |
| [10] | 蒋金华 .纺织预型件结构参数与模塑成型复合材料树脂渗透性关系的研究[D].东华大学,2011. |
| [11] | 梁晓宁,李炜,罗永康,张锦南.厚铺层结构纤维增强体渗透性能研究[J].玻璃钢/复合材料,2010(01):46-48,52. |
| [12] | LOENDERSLOOT R .The Structure-Permeability Relation of Textile Reinforcements[D].Enschede:University of Twente,2006. |
| [13] | RIEBER G;MITSCHANG P .2D Permeability Changes due to Stitching Seams[J].COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING,2010,41:4-7. |
| [14] | RUDD CD;LONG AC;KENDALL KN;MANGIN CGE.Liquid Moulding Technologies:Resin Transfer Moulding,Structural Reaction Injection Moulding and Related Processing Techniques[M].Abington Cambridge CB:Woodhead Publishing Ltd,1997 |
| [15] | DARCY H.Les Fontaines Publiques de Dijo[M].Dalmont Paris,1856 |
| [16] | BEAR J.Dynamics of Fluids in Porous Media[M].Elsevier,1972 |
| [17] | TANOGLU M;ROBERTS;HEIDER D;MCKNIGHT SH,BRACHOS V,JR.JWG .Efects of Thermoplastic Preforming Binder on the Properties of S2-glass Fabric Reinforced Epoxy Composites[J].International Journal of Adhesion and Adhesives,2001,21:187-195. |
| [18] | KITTLESON J;HACKETT S.Tackitier/Resin Compatibility is Essential for Aerospace Grade Resin Transfer Molding[A].,1994 |
| [19] | Rohatgi V.;Lee LJ. .MOLDABILITY OF TACKIFIED FIBER PREFORMS IN LIQUID COMPOSITE MOLDING[J].Journal of Composite Materials,1997(7):720-744. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%