Effects of a silane treatment on the mechanical interfacial properties of montmorillonite/epoxy nanocomposites
Effects of a silane treatment on the mechanical interfacial properties of montmorillonite/epoxy nanocomposites
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DOI：
10.1016/j.msea.2009.07.023
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发表时间：
2009-11-25
期刊：
影响因子：
6.4
通讯作者：
Lyu, Yi-Yeol
中科院分区：
文献类型：
--
作者：
Park, Soo-Jin;Kim, Byung-Joo;Lyu, Yi-Yeol
采用硅烷偶联剂对蒙脱土（MMT）进行改性，以提高其与环氧树脂基体的界面结合力。通过FT-IR、XRD、TEM和表面能学研究了SCA对蒙脱土/环氧树脂纳米复合材料界面力学性能的影响。结果表明，SCA的加入改善了蒙脱土表面的有机官能团，包括硅烷醇和硅氧烷基团。这种表面改性还导致MMT的表面自由能的特定分量的增强。关于机械界面性质，所有经处理的MMT/环氧树脂复合材料的临界应力强度因子（K（IC））和层间剪切应力（ILSS）值均增强：γ-氨基丙基三乙氧基硅烷（APS）处理的MMT/环氧树脂复合材料的最高值分别为3.55 MPa m（1/2）和13.8 MPa。(C)2009爱思唯尔有限公司版权所有。
In this study, montmorillonite (MMT) was modified using silane coupling agents (SCAs) to improve its interfacial adhesion to an epoxy matrix. The effects of the SCAs on the mechanical interfacial properties of MMT/epoxy nanocomposites were investigated by FT-IR, XRD, and TEM and with reference to the surface energetics. In the results, the SCAs led to an improvement of the organic functional groups, including the silanol and siloxane groups, on the MMT surfaces. This surface modification also led to an enhancement of the specific component of the surface free energy of the MMT Regarding the mechanical interfacial properties, the critical stress intensity factor (K(IC)) and interlaminar shear stress (ILSS) values for all of the treated MMT/epoxy composites were enhanced: those of the gamma-amino propyl triethoxy silane (APS)-treated MMT/epoxy composite showed the highest values of 3.55 MPa m(1/2) and 13.8 MPa, respectively. (C) 2009 Elsevier B.V. All rights reserved.