Simcha Shelly, Dotan Ana, Kenig Samuel, Dodiuk Hanna
Shenkar College of Engineering and Design, Ramat Gan, 52562, Israel.
Nanomaterials (Basel). 2012 Oct 26;2(4):348-365. doi: 10.3390/nano2040348.
This study focused on the effect of Multi Wall Carbon Nanotubes (MWCNT) content and its surface treatment on thermo-mechanical properties of epoxy nanocomposites. MWCNTs were surface treated and incorporated into two epoxy systems. MWCNT's surface treatments were based on: (a) Titania coating obtained by sol-gel process and (b) a nonionic surfactant. Thermo-mechanical properties improvement was obtained following incorporation of treated MWCNT. It was noticed that small amounts of titania coated MWCNT (0.05 wt %) led to an increase in the glass transition temperature and stiffness. The best performance was achieved adding 0.3 wt % titania coated MWCNT where an increase of 10 °C in the glass transition temperature and 30% in storage modulus were obtained.
本研究聚焦于多壁碳纳米管（MWCNT）含量及其表面处理对环氧纳米复合材料热机械性能的影响。对MWCNT进行了表面处理并将其掺入两种环氧体系中。MWCNT的表面处理基于：（a）通过溶胶 - 凝胶法获得的二氧化钛涂层，以及（b）一种非离子表面活性剂。掺入经处理的MWCNT后，热机械性能得到改善。注意到少量二氧化钛涂层的MWCNT（0.05重量％）导致玻璃化转变温度和刚度增加。添加0.3重量％二氧化钛涂层的MWCNT时性能最佳，此时玻璃化转变温度提高了10°C，储能模量提高了30％。
