纤维增强热固性复合材料的压缩性能
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- 英文论文题名：COMPRESSION OF THERMOSETTING FABRIC MATERIALS
- 论文作者：刘红影
- 英文论文作者：LIU Hong-ying ; Beijing Composite Materials Co. ; Ltd.
- 年：2016
- 作者机构：北京玻钢院复合材料有限公司;
- 论文关键词：碳纤维 ; 热固性树脂 ; 纤维织物
- 英文论文关键词：carbon fibre ; thermosetting resin ; fabric
- 会议召开时间：2016-09-22
- 会议录名称：第二十一届全国玻璃钢/复合材料学术年会论文集（《玻璃钢/复合材料》2016增刊）
- 语种：中文
- 分类号：TB332
- 学会代码：EUGQ
- 会议名称：第二十一届全国玻璃钢/复合材料学术年会
- 会议地点：中国黑龙江哈尔滨
- 主办单位：中国硅酸盐学会玻璃钢分会
- 学会名称：中国硅酸盐学会
- 页数：5
- 文件大小：753k
- 原文格式：O
- 会议级别：全国
摘要
目前,纤维编织物和缝合织物的预浸料已经商业化。研究了在垂直纤维平面方向施加压应力时,编织物和缝合织物的变形及尺寸、缝合、温度、粘度及编织形式的变化对压缩性能的影响。从试验可以得出两个特点明显影响压缩性能和部件的制备,第一,低粘度树脂通过纤维时的渗透性能;第二,载荷撤消后的明显弹性回复,在某些情况下,弹性回复可达到初始压缩强度的50%。在许多生产工艺中,材料承受不同程度的压应力,纤维毡的弹性模量很大,是固化后变形和残余应力的根源。
Thermoset fabric prepregs are available commercially in a number of weaves and are occasionally stitched.A study has been made of the deformation of these materials subjected to compressive forces normal to the plane the fabric.The effects of change of scale,stitching,temperature,viscosity and weave have been investigated.From the experiments two significant features that may influence the processing and manufacture of parts formed from these materials were observed.The first was the percolation of the low viscosity resin through the fibres and the second was the substantial elastic recovery on removal of the load.In some cases this recovery was as much as fifty percent of the initial compression.In many manufacturing processes,the material undergoes various degrees of compression and the large elastic modulus observed in some of these mats is a potential source of distortion and of residual stresses after curing.
Thermoset fabric prepregs are available commercially in a number of weaves and are occasionally stitched.A study has been made of the deformation of these materials subjected to compressive forces normal to the plane the fabric.The effects of change of scale,stitching,temperature,viscosity and weave have been investigated.From the experiments two significant features that may influence the processing and manufacture of parts formed from these materials were observed.The first was the percolation of the low viscosity resin through the fibres and the second was the substantial elastic recovery on removal of the load.In some cases this recovery was as much as fifty percent of the initial compression.In many manufacturing processes,the material undergoes various degrees of compression and the large elastic modulus observed in some of these mats is a potential source of distortion and of residual stresses after curing.
引文
[1]Jones RS,Robers RW.Rheological characterization of continuous fibre composites in oscillatory shear flow[J].Compos Manufacturing,1995(6):161-169.
[2]Hull BD,Rogers TG,Spencer AJM.Theoretical analysis of forming flows of continuous fibre-resin systems[C]//Flow and Rheology in Polymer Composites Manufacturing,Amsterdam;Elsevier,1994;203-256.
[3]Goshawk JA,Jones RS.Constitutive equations for anisotropic continua[J].Composites A,1998,29:133-141.
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[5]Kim JK,Bailie C,Poh J,et al.Fracture toughenss of CFRP with rubber modified epoxy matrices[J].Compos Sci Technol,1992,43:283-297.
[6]Dransfield KA,Bailie CA,Mai Y-W.Improving the delamination resistance of CFRP by stitching-a review[J].Compos Sci Technol,1994,50:305-317.
[7]Jones RS,Roberts RW.Ply re-orientation in compression[J].Compos Manufacturing,1991(2):259-267.
[2]Hull BD,Rogers TG,Spencer AJM.Theoretical analysis of forming flows of continuous fibre-resin systems[C]//Flow and Rheology in Polymer Composites Manufacturing,Amsterdam;Elsevier,1994;203-256.
[3]Goshawk JA,Jones RS.Constitutive equations for anisotropic continua[J].Composites A,1998,29:133-141.
[4]O'Brian TK,Muni GB,Salpekar SA.Interlaminar shear fracture toughenss and fatigue thresholds for composite materialsf J].ASTMSTP,1989,1012:222-250.
[5]Kim JK,Bailie C,Poh J,et al.Fracture toughenss of CFRP with rubber modified epoxy matrices[J].Compos Sci Technol,1992,43:283-297.
[6]Dransfield KA,Bailie CA,Mai Y-W.Improving the delamination resistance of CFRP by stitching-a review[J].Compos Sci Technol,1994,50:305-317.
[7]Jones RS,Roberts RW.Ply re-orientation in compression[J].Compos Manufacturing,1991(2):259-267.