面板厚度对PMI泡沫夹层复合材料吸湿性能影响
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- 英文论文题名：EFFECT OF PANEL THICKNESS ON MOISTURE DIFFUSION OF PMI CORE SANDWICH COMPOSITE
- 论文作者：边佳燕 ; 刘钧
- 英文论文作者：BIAN Jia-yan ; LIU Jun ; College of Aerospace Science and Engineering ; National University of Defense and Technology
- 年：2016
- 作者机构：国防科学技术大学航天科学与工程学院;
- 论文关键词：面板厚度 ; PMI泡沫夹层复合材料 ; 吸湿
- 英文论文关键词：panel thickness ; PMI core sandwich composite ; moisture absorption
- 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：4
- 文件大小：564k
- 原文格式：O
- 会议级别：全国
摘要
采用聚甲基丙烯酰亚胺(PMI)泡沫、石英玻璃纤维/LT5089环氧树脂复合材料制备不同厚度的三种面板及其夹层结构复合材料,研究经过60℃、85%RH湿热处理后试样的吸湿特性,并对三种夹层复合材料干态和吸湿后的弯曲性能、平压性能进行了测试分析。结果表明,面板厚度对夹层复合材料的吸湿特性、弯曲性能有显著影响。吸湿初期24h,夹层复合材料快速吸湿,且吸湿速率与面板厚度成反比,随后缓慢达到吸湿平衡,平衡时的饱和吸湿率与面板厚度也成反比;由于水分子对夹层复合材料的增塑作用,吸湿后试样的弯曲刚度和峰值力都降低,并且面板厚度越大,弯曲刚度和峰值力的降低程度越小。平压性能主要与芯材相关,因此平压强度与面板厚度关系不大。
Sandwich composites with three different panel thickness were fabricated with polymethacrylimide(PMI) foam and quartz glass fiber/epoxy resin(LT5089) composites panels.Moisture diffusion of the three panels and the corresponding sandwich composites was carefully investigated with the moisture treatment of 60℃,85%RH,also bending and compression properties of the specimens were tested before and after the treatment.The results indicate that the panel thickness imposes striking influences on the moisture diffusion and bending property.A fast moisture absorbing progress of the sandwich composites can be clearly observed during the first 24 h moisture treatment,and the absorption rate descend following the increasement of the panel thickness.Subsequently,the moisture balance is achieved mildly,and the moisture saturation data shares the same tendency with moisture absorption rates.Simultaneously,bending stiffness and maximum force of the treated samples are decreased owing to the plastification of the water molecule,but a larger panel thickness could alleviate the descent.As for the compression property,panel thickness only causes negligible differences because the compression is mainly governed by the property of core materials.
Sandwich composites with three different panel thickness were fabricated with polymethacrylimide(PMI) foam and quartz glass fiber/epoxy resin(LT5089) composites panels.Moisture diffusion of the three panels and the corresponding sandwich composites was carefully investigated with the moisture treatment of 60℃,85%RH,also bending and compression properties of the specimens were tested before and after the treatment.The results indicate that the panel thickness imposes striking influences on the moisture diffusion and bending property.A fast moisture absorbing progress of the sandwich composites can be clearly observed during the first 24 h moisture treatment,and the absorption rate descend following the increasement of the panel thickness.Subsequently,the moisture balance is achieved mildly,and the moisture saturation data shares the same tendency with moisture absorption rates.Simultaneously,bending stiffness and maximum force of the treated samples are decreased owing to the plastification of the water molecule,but a larger panel thickness could alleviate the descent.As for the compression property,panel thickness only causes negligible differences because the compression is mainly governed by the property of core materials.
引文
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[10]胡建平,蔡吉酷,肇研,等.湿热环境对蜂窝夹层复合材料性能的影响[J].材料工程,2010(11):43-49.
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[12]Shen C H,Springer G S.Moisture Absorption and Desorption of Composite Materials[J].Journal of Composite Materials,1976(10):2-18.
[13]董安琪,段跃新,肇研,等.湿热环境对PMI泡沫夹芯复合材料性能的影响[J].复合材料学报,2012,29(2):46-52.
[2]刘永涛,杨杰,黄业青,等.泡沫夹层复合材料耐水性能研究进展[J].材料导报,2011,25(18):439-443.
[3]尹亮,郑国栋,丁常方,等.PMI泡沫夹芯复合材料湿热老化性能研究[J].玻璃钢/复合材料,2015(8):5-9.
[4]吴扬,董浩,段跃新,等.湿热循环对PMI泡沫/3218-1环氧树脂夹层结构性能影响的研究[J].玻璃钢/复合材料,2012(I):29-34.
[5]Howard A.Katzman,Robert M.Castaneda,Han Sik Lee.Moisture diffusion in composite sandwich structures[J].Composites:Part A,2008,39:887-892.
[6]胡建平,蔡吉酷,肇研,等.Nomex/氰酸酯树脂夹层复合材料耐湿热性研究[J].材料工程,2010(9):58-62.
[7]Manujesh B J,Vijayalakshmi R,Sham Aan M P.Moisture absorption and mechanical degradation studies of polyurethane foam cored E-glass-reinforced vinyl-ester sandwich composites[J].Journal of Reinforced Plastics and Composites,2014,33:479-492.
[8]David R.Veazie,Kito R.Robinson,Kunigal Shivakumar.Effects of the marine environment on the interfacial fracture toughness of PVC core sandwich composites[J].Composites,2004,35:461-466.
[9]F.Aviles M.Aguilar-Montero.Mechanical degradation of foam-cored sandwich materials exposed to high moisture[J].Composite Structures,2010,92:122-129.
[10]胡建平,蔡吉酷,肇研,等.湿热环境对蜂窝夹层复合材料性能的影响[J].材料工程,2010(11):43-49.
[11]Nikhil Joshi,Anastasia Muliana.Deformation in viscoelastic sandwich composites subject to moisture diffusion[J].Composite Structures,2010,92:254-264.
[12]Shen C H,Springer G S.Moisture Absorption and Desorption of Composite Materials[J].Journal of Composite Materials,1976(10):2-18.
[13]董安琪,段跃新,肇研,等.湿热环境对PMI泡沫夹芯复合材料性能的影响[J].复合材料学报,2012,29(2):46-52.