e-journal

Thermal and mechanical properties of POSS-Cyanate ester/epoxy nanocomposites

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A new cyanate ester functionalized polyhedral oligomeric silsesquioxane (POSS-Cy) monomer was prepared by reacting hydroxyl functionalized POSS-OH with cyanogen bromide (CNBr) in the presence of triethylamine (Et3N). The precursor POSS-OH and the corresponding cyanate ester POSS-Cy were characterized by Fourier transform infrared (FTIR), 1H and 13C nuclear magnetic resonance (13C-NMR) spectral techniques. Nanocomposites were prepared by reacting diglycidylether of bisphenol-A, POSS-Cy and 4,4’-diaminodiphenylmethane (DDM). The structure of the cross-linked networks
was confirmed by FT-IR. The POSS particles formed clusters in some regions leading to phase separation as revealed by scanning electron microscopy (SEM) analysis. Dynamic mechanical analysis (DMA) shows that the glass transition temperature decreases from 161oC to 155oC when the POSS-Cy content was increased from 0% to 15%. But, the T10% of the epoxy resin (369oC) increased significantly (404C) on incorporating 15% of POSS-Cy. The LOI values indicate
that these blends have good flame-retardant properties.

Keywords epoxy resin, cyanate functionalized polyhedral oligomeric silsesquioxane (POSS)-nano composites, thermal and mechanical properties

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Informasi Detail

Judul Seri

High Performance Polymers

No. Panggil

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Penerbit

: SAGE Publications Ltd., 2012

Deskripsi Fisik

High Performance Polymers 25(1) 87–96 , 2012

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

BIOKIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

hasnidar/agus

Versi lain/terkait

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