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首页> 外文会议>Proceedings of the American Society for Composites Twenty-Ninth technical conference, Proceedings of the 16th US-JAPAN conference on composite materials ASTM-D30 meeting >Comparison of Low Velocity Impact Properties of MMT, MWCNT and MMT/MWCNT Binary Nanoparticles Modified Carbon/Epoxy Composites Subjected to Marine Environmental Conditioning
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Comparison of Low Velocity Impact Properties of MMT, MWCNT and MMT/MWCNT Binary Nanoparticles Modified Carbon/Epoxy Composites Subjected to Marine Environmental Conditioning

机译：海洋环境条件下MMT，MWCNT和MMT / MWCNT二元纳米粒子改性碳/环氧复合材料低速冲击性能的比较

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摘要

For the past several years, various parts of naval vessels and offshore structuresrnhave been manufactured by fiber reinforced polymer (FRP) composites. However,rnmodification of matrix by nanoparticles may become necessary to reduce therndegradation of the functional and mechanical properties due to absorption ofrnmoisture. In this study, carbon fiber reinforced epoxy nanocomposites werernmodified with Multiwalled Carbon Nanotube (MWCNT), Montmorillonite (MMT)rnnanoclay and MWCNT/MMT binary nanoparticles and subjected to marinernenvironmental conditioning. After 6 months of conditioning, the samples wererncompared with unconditioned and control carbon/epoxy samples. The modificationrnof epoxy matrix was made with 0.3% COOH-MWCNT, 2% of MMT nanoclay andrn2% MMT/0.1% MWCNT binary nanoparticles by weight of the matrix. Dryrnsamples without degradation were tested for low velocity impact responseandrncompared with control samples. The samples were then subjected to 6 months ofrnconditioning to sea water at ambient conditions and characterized again. Therncomposite laminates were subjected to 30J, 40J and 50J energy levels and loadrnresponse with respect to displacement was obtained. The damage area for allrnmodified and control samples were observed using thermography imagingrntechnique and quantified with a program written in MATLAB. From experimentalrnresults it is evident that, MWCNT and MMT reduced the damaged area ofrncomposite panels and enhanced the impact properties. But significant improvementrnwas observed for the binary nanoparticles reinforced composite panels.
机译：在过去的几年中，已经通过纤维增强聚合物（FRP）复合材料制造了海军舰船和海上结构的各个部分。然而，为了减少由于吸收水分而引起的功能和机械性能的降解，通过纳米颗粒对基质的改性可能变得必要。在这项研究中，碳纤维增强环氧纳米复合材料用多壁碳纳米管（MWCNT），蒙脱土（MMT）纳米粘土和MWCNT / MMT二元纳米颗粒进行了改性，并进行了海洋环境调节。调理6个月后，将样品与未经调理和对照的碳/环氧样品进行比较。所述改性环氧树脂基质由按所述基质的重量计0.3％的COOH-MWCNT，2％的MMT纳米粘土和2％的MMT / 0.1％MWCNT二元纳米颗粒制成。测试了没有降解的干样品的低速冲击响应，并与对照样品进行了比较。然后在环境条件下对样品进行6个月的海水处理，并再次进行表征。使复合复合材料层压板经受30J，40J和50J的能级，并获得相对于位移的载荷响应。使用热成像成像技术观察所有修饰和对照样品的损坏区域，并使用MATLAB编写的程序对其进行量化。从实验结果可以明显看出，MWCNT和MMT减少了复合板的损伤面积并增强了冲击性能。但是观察到二元纳米颗粒增强复合板的显着改善。

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