微波固化成型三维中空复合材料结构的力学性能

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (3): 53-59.

微波固化成型三维中空复合材料结构的力学性能

袁铁军^{1, 2}, 周来水^1*, 郑伟峰¹, 安鲁陵¹

1.南京航空航天大学机电学院,南京210016;
2.盐城工学院机械学院,盐城224051;
3.苏州科技大学机械工程学院,苏州215000

收稿日期:2016-10-20 出版日期:2017-03-25 发布日期:2017-03-28
通讯作者: 周来水(1962-),男,博士,博士生导师,主要从事先进制造技术方面的研究,zlsme@nuaa.edu.cn。
作者简介:袁铁军(1975-),男,博士生,副教授,主要从事材料成型工艺及装备方面的研究。
基金资助:
国家商用飞机制造工程技术研究中心创新基金项目(SAMC13-JS-15-021);江苏省高校自然科学研究面上项目(14KJB460027);江苏省科技计划资助项目(BY2015057-22)

MECHANICAL PROPERTIES OF 3D FABRIC COMPOSITES MANUFACTURED BY MICROWAVE CURING

YUAN Tie-jun^{1, 2}, ZHOU Lai-shui^1*, ZHENG Wei-feng¹, AN Lu-ling

1.College of Mechanical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2.School of Mechanical Engineering, Yancheng Institute of Technology, Yancheng 224051, China;
3.School of Mechanical Engineering, Jiangsu University of Science and Technology, Suzhou 215000, China

Received:2016-10-20 Online:2017-03-25 Published:2017-03-28

摘要/Abstract

摘要： 为了改善三维中空复合材料结构微波固化成型的固化均匀性,提出了添加外部导热附加模具和内部微波吸收剂两种不同的方法。通过试验研究了附加模具的材料、厚度以及微波吸收剂种类和含量对三维中空复合材料结构力学性能的影响。结果表明,结构的平压失效模式包括芯柱失稳和压溃,剪切失效模式为芯材剪切失效和界面脱粘,短梁弯曲的失效模式为面板/芯材界面的脱粘后屈曲破坏。相比于未添加附加模具,AlN和Al₂O₃陶瓷均可以提高结构的力学性能,但AlN的增强效果更显著。AlN模具厚度的增加不利于结构的力学性能,模具厚度从0.5 mm增加到1.5 mm时,结构的平压、剪切和芯材剪切强度均随之降低。微波吸收剂的添加均可提高中空结构的力学性能,其中剪切和芯材剪切强度随着石墨含量的增加而增加,平压强度随着石墨含量的增加先增加后降低,而Fe₃O₄含量变化则对结构力学性能的影响不显著。

关键词: 三维中空复合材料构件, 微波固化, 导热陶瓷模具, 微波吸收剂, 力学性能

Abstract: Aiming at improving the curing uniformity of microwave curing process of 3D spacer fabric composites, two different methods were proposed, i.e., additional mould for external heat-conducting and microwave absorber for internal heat-conducting. Compression test, shear test and short-beam flexural test were utilized to study the effect of material and thickness of addition mould and the kind and content of microwave absorber on the mechanical properties of spacer fabric composites. The experimental results indicate that the failure modes of compression includes the instability and crushing of core, and the failure modes of shear test are the shear failure of core and interfacial debonding, while the failure mode of short-beam flexure is the buckling after interfacial debonding. Compared with the specimens with no additional mould, the mould of AlN and Al₂O₃ could both improve the mechanical properties of the 3D spacer fabric composites, and the reinforcing effect of AlN mould is more significant. However, increasing the thickness of AlN mould is adverse to the mechanical properties. When the thickness is increased from 0.5mm to 1.5mm, the compression, shear and core shear strength were all decreased. The addition of microwave absorber could improve the mechanical properties. The shear and core shear strength increased with the increasing of graphite′s content, while the compressive strength first increased then decreased. The change of Fe₃O₄′s content didn′t affect the mechanical properties significantly.

Key words: sheet-reinforced spacer fabric composites, microwave curing, thermal conductive ceramic mold, microwave-absorber, mechanical properties

中图分类号:

TB332

袁铁军, 周来水, 郑伟峰, 安鲁陵. 微波固化成型三维中空复合材料结构的力学性能[J]. 玻璃钢/复合材料, 2017, 0(3): 53-59.

YUAN Tie-jun, ZHOU Lai-shui, ZHENG Wei-feng, AN Lu-ling. MECHANICAL PROPERTIES OF 3D FABRIC COMPOSITES MANUFACTURED BY MICROWAVE CURING[J]. Fiber Reinforced Plastics/Composites, 2017, 0(3): 53-59.

参考文献

[1] 郑云. 中空夹芯复合材料在轨道交通内装上的应用[J]. 玻璃纤维, 2013, 1(4): 19-23.
[2] Vaidya A S, Vaidya U K, Uddin N. Impact response of three-dimensional multifunctional sandwich composite[J]. Materials and Design, 2014, 56(1): 50-59.
[3] Hosur M V, Abdullah M, Jeelani S. Manufacturing and low-velocity impact characterization of foam filled 3-D integrated core sandwich composites with hybrid face sheets[J]. Composite Structures, 2005, 69(2): 167-181.
[4] Li D S, Zhao C Q, Jiang L, et al. Experimental study on the bending properties and failure mechanism of 3D integrated woven spacer composites at room and cryogenic temperature[J]. Composite Structures, 2014, 111(1):56-65.
[5] Zhao C Q, Li D S, Ge T Q, et al. Experimental study on the compression properties and failure mechanism of 3D integrated woven spacer composites[J]. Materials & Design, 2014, 56(4): 50-59.
[6] 匡宁, 周光明, 张立泉, 等. 三维中空复合材料力学性能研究[J]. 材料工程, 2007(S1): 117-120.
[7] Vaidya U K, Hosur M V, Earl D, et al. Impact response of integrated hollow core sandwich composite panels[J]. Composites: Part A, 2000, 31(8): 761-777.
[8] M.V. Hosur, et al. Manufacturing and low-velocity impact characterization of hollow integrated core sandwich composites with hybrid face sheets[J].Composite Structures, 2004, 65(1): 103-115.
[9] Li M, Wang S, Zhang Z, et al. Effect of Structure on the Mechanical Behaviors of Three-Dimensional Spacer Fabric Composites[J]. Applied Composite Materials, 2009, 16(1): 1-14.
[10] 袁铁军, 周来水, 郑伟峰, 等. 面板增强中空复合材料构件微波成形工艺[J]. 中国机械工程, 2016, 27(4): 544-554.
[11] 李树健, 湛利华, 彭文飞, 等. 先进复合材料构件热压罐成型工艺研究进展[J]. 稀有金属材料与工程, 2015, 44(11): 2927-
2931.
[12] Maffezzoli A, Grieco A. Optimization of Parts Placement in Autoclave Processing of Composites[J]. Applied Composite Materials, 2013, 20(3): 233-248.
[13] Chen Y, Li Y, You Y, et al. Research on mechanical properties of epoxy/glass fiber composites cured by microwave radiation[J]. Journal of Reinforced Plastics & Composites, 2014, 33(15): 1441-1451.
[14] 刘学清, 王源升. 微波固化环氧树脂(E44/DDM)的热性能及膨胀性能[J]. 高分子材料科学与工程, 2004, 20(3):111-113.
[15] Rao R M V G K. Studies on Tensile and Interlaminar Shear Strength Properties of Thermally Cured and Microwave Cured Glass-Epoxy Composites[J]. Journal of Reinforced Plastics & Composites, 2006, 25(7): 783-795.
[16] 陈云雷, 李勇, 耿杰,等. 石墨对E-51环氧树脂体系微波固化速率的影响[J]. 航空学报, 2013, 34(12): 2833-2840.
[17] 周文英, 齐暑华, 李国新, 等. 环氧树脂及其复合材料微波固化研究[J]. 材料科学与工程学报, 2005, 23(4): 625-628.
[18] Agrawal A, Satapathy A. Experimental Investigation of Micro-sized Aluminium Oxide Reinforced Epoxy Composites for Microelectronic Applications[J]. Procedia Materials Science, 2014, 5(1): 517-526.
[19] Deng Y, Fan H, Zhang J. Effect of surface modification on mechanical performances of alumina-dispersed epoxy composites[J]. Journal of the Chinese Ceramic Society, 2008, 36(9): 1251-1255.
[20] 王旗, 李喆, 尹毅, 等. 微/纳米氧化铝/环氧树脂复合材料热导率和击穿强度的研究[J]. 绝缘材料, 2013, 46(2): 49-52.