Mechanical and Thermal Properties of Silane Grafted Organomodified Montmorillonite Reinforced Silicone Rubber Nanocomposites

被引：17

作者：

Pradhan, Bratati ^{[1
]}

Srivastava, Suneel Kumar ^{[1
]}

Saxena, Anubhav ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Chem, Kharagpur 721302, W Bengal, India

[2] GE India Technol Ctr Pvt Ltd, EPIP, Moment Performance Mat Programs, Bangalore 560066, Karnataka, India

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2012年 / 12卷 / 12期

关键词：

Silicone Rubber; Silylation of Montmorillonite; Nanocomposite; Thermal Properties; Mechanical Properties; LAYERED DOUBLE HYDROXIDE; CARBON NANOTUBES; CRYSTALLIZATION BEHAVIOR; PHYSICAL-PROPERTIES; POLYMER; INTERCALATION; MORPHOLOGY;

D O I：

10.1166/jnn.2012.6728

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The present work deals with the preparation and characterization of silane grafted MMT (S-MMT), organomodified MMT (O-MMT) and silane grafted organomodified montmorillonite (OS-MMT) reinforced silicone rubber (SR) nanocomposites. XRD of SR filled with O-MMT (1-8 wt%), OS-MMT (1-8 wt%) and S-MMT (1-5 wt%) suggested the formation exfoliated morphology, which has also been supported by the corresponding TEM images of 3 wt% filled SR nanocomposites. TGA and DSC studies of SR/OS-MMT (3 wt%) nanocomposites have shown that the thermal stability, glass transition temperature and crystallization temperature are maximum improved with respect to neat SR by 50,14 and 10 degrees C respectively. This is attributed to the synergistic effect of organo-modification followed by amino silane grafting of MMT on thermal properties of SR. The tensile strength of SR/S-MMT (5 wt%), SR/O-MMT (3 wt%) and SR/OS-MMT (3 wt%) relatively improved by 134,312, and 259% respectively suggesting that the synergistic effect of OS-MMT is not effective in reinforcing the mechanical properties of SR. In all probability, the curing of SR through hydrosilylation is inhibited by the lone pair on nitrogen in NH2 group of OS-MMT.

引用

页码：8975 / 8984

页数：10

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