Surface Modified Clay Reinforced Silicon Incorporated Epoxy Hybrid Nanocomposites: Thermal, Mechanical, and Morphological Properties

Q2 Materials Science

Polymers from Renewable Resources Pub Date : 2018-09-04 DOI:10.1177/204124791800900101

C. K. Chozhan, A. Chandramohan, M. Alagar

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引用次数: 6

Abstract

The silicon-containing epoxy/clay nanocomposites were developed by incorporating the surface-modified MMT clay upto 7wt% into Si-epoxy resin. The surface of the montmorillonite (MMT) clay was modified with two surface modifiers namely cetyltrimethylammonium bromide (CTAB) and 3-aminopropyltriethoxysilane (γ-APS). The surface modified clay reinforced Si-epoxy composites were developed in the form of castings, and were characterized for their thermal and mechanical properties. Thermal behaviour of the composites was characterized by differential scanning calorimetry (DSC), thermo gravimetric analysis (TGA) and dynamic mechanical analysis (DMA). Mechanical properties were studied as per ASTM standards. Data result from the different studies, it is inferred that the surface modified clay reinforced Si-epoxy composites exhibit lower Tg than that of neat epoxy matrix (127°C <165°C). The decomposition temperature for 60% weight loss of clay reinforced Si-epoxy composites is 674–823°C which is higher when compared to that of neat epoxy matrix. For 5wt% clay reinforced Si-epoxy composites, the values of tensile, flexural and impact strength are increased to 26%, 21% and 29% respectively. The storage modulus (E’) is increased from 5932 to 6308 MPa for clay reinforced Si-epoxy resin. XRD analysis confirmed the well-dispersed exfoliated nanocomposites structure.

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表面改性粘土增强硅复合环氧杂化纳米复合材料:热、机械和形态性能

通过将表面改性的MMT粘土掺入硅环氧树脂中，制备了含硅环氧树脂/粘土纳米复合材料。采用十六烷基三甲基溴化铵（CTAB）和3-氨基丙基三乙氧基硅烷（γ-APS）两种表面改性剂对蒙脱石（MMT）粘土表面进行了改性。以铸件的形式开发了表面改性粘土增强硅-环氧树脂复合材料，并对其热性能和力学性能进行了表征。采用差示扫描量热法（DSC）、热重分析法（TGA）和动态力学分析法（DMA）对复合材料的热行为进行了表征。根据ASTM标准对机械性能进行了研究。不同研究的数据结果表明，表面改性粘土增强硅-环氧树脂复合材料表现出比纯环氧树脂基体更低的Tg（127°C<165°C）。粘土增强硅-环氧树脂复合材料60%重量损失的分解温度为674–823°C，与纯环氧树脂基体相比更高。对于5wt%的粘土增强硅-环氧树脂复合材料，其拉伸、弯曲和冲击强度分别提高到26%、21%和29%。粘土增强硅环氧树脂的储能模量（E’）从5932MPa提高到6308MPa。XRD分析证实了剥离纳米复合材料的良好分散结构。

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来源期刊

Polymers from Renewable Resources Materials Science-Polymers and Plastics

CiteScore

3.50

自引率

0.00%

发文量

期刊介绍： Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.