Epoxy Compositions Cured with Aluminosilsesquioxanes: Thermomechanical Properties

被引：20

作者：

Chmielewska, Danuta ^{[1
]}

Sterzynski, Tomasz ^{[1
]}

Dudziec, Beata ^{[2
]}

机构：

[1] Poznan Univ Tech, Inst Mat Technol, Polymer Proc Div, PL-61138 Poznan, Poland

[2] Adam Mickiewicz Univ, Fac Chem, Dept Organometall Chem, PL-60780 Poznan, Poland

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2014年 / 131卷 / 17期

关键词：

composites; crosslinking; mechanical properties; thermal properties; POLYHEDRAL OLIGOMERIC SILSESQUIOXANES; GLASS-TRANSITION TEMPERATURE; RING-OPENING POLYMERIZATION; POSS NANOCOMPOSITES; THERMAL-PROPERTIES; RESIN; NETWORKS; MORPHOLOGY; COMPLEXES; CHEMISTRY;

D O I：

10.1002/app.40672

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The aim of this study was to verify the influence of bis(heptaphenylaluminosilsesquioxane) (AlPOSS), used as a curing agent, on the thermomechanical properties of epoxy resin. Moreover, various curing conditions were taken into account. Epoxy casts were prepared from epoxy resin based on bisphenol A cured with different amounts of bis(heptaphenylaluminosilsesquioxane). The thermomechanical properties were investigated during dynamical mechanical thermal analysis (DMTA) in two cycles of heating. The storage modulus G' of the epoxy casts was found to be higher in comparison to the reference epoxy sample and significantly dependent on the POSS content. A correlation between the glass transition temperatures (T-g), the curing conditions and the amount of curing agents were closely related. The occurrence of the crosslinking process in epoxy matrix was proved by the FTIR spectroscopy. The structure of the epoxy casts was investigated using scanning electron microscopy (SEM). (C) 2014 Wiley Periodicals, Inc.

引用

页码：8444 / 8452

页数：9

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