Epoxy nanocomposites curing by microwaves
In this work, chemically modified sodium montmorillonite and epoxy monomer were used to prepare nanocomposites in two consecutive stages. In the first stage, dodecylamine, octadecylamine, hexadecylamine, and hexadecyltrimethyl ammonium bromide were used to prepare various organophilic clays. In the...
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| Veröffentlicht in: | Polymer engineering and science 2006-08, Vol.46 (8), p.1104-1110 |
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| creator | Uyanık, Nurseli Erdem, A. Rıza Can, M. Fatih Çelik, Mehmet Sabri |
| description | In this work, chemically modified sodium montmorillonite and epoxy monomer were used to prepare nanocomposites in two consecutive stages. In the first stage, dodecylamine, octadecylamine, hexadecylamine, and hexadecyltrimethyl ammonium bromide were used to prepare various organophilic clays. In the second stage, the bisphenol‐A based epoxy monomer and predetermined amounts of organoclay were mixed together and then cured by an aliphatic polyamine for 20 min under microwave at 400 W. Furthermore, α‐ω diacrylate poly(dimethylsiloxane) was added to the mixture before the curing process to modify the toughness of the samples. The mixture was poured into the poly(tetrafluoroethylene) mold; the epoxy resin/curing agent ratio was maintained as 2/1. The clear films formed after microwave irradiation were removed from the mold, cooled, and then stored in a cool and dry medium until characterization. The samples were analyzed by wide angle X‐ray diffraction, differential scanning calorimetry, and mechanical tests. Surfaces of the cold fractured samples were also observed under the scanning electron microscope. The results revealed that microwave curing of the samples of 5% organoclay and 5% siloxane showed improvement in mechanical properties. POLYM. ENG. SCI. 46:1104–1110, 2006. © 2006 Society of Plastics Engineers |
| doi_str_mv | 10.1002/pen.20574 |
| format | Article |
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The clear films formed after microwave irradiation were removed from the mold, cooled, and then stored in a cool and dry medium until characterization. The samples were analyzed by wide angle X‐ray diffraction, differential scanning calorimetry, and mechanical tests. Surfaces of the cold fractured samples were also observed under the scanning electron microscope. The results revealed that microwave curing of the samples of 5% organoclay and 5% siloxane showed improvement in mechanical properties. POLYM. ENG. 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Rıza</creatorcontrib><creatorcontrib>Can, M. Fatih</creatorcontrib><creatorcontrib>Çelik, Mehmet Sabri</creatorcontrib><title>Epoxy nanocomposites curing by microwaves</title><title>Polymer engineering and science</title><addtitle>Polym Eng Sci</addtitle><description>In this work, chemically modified sodium montmorillonite and epoxy monomer were used to prepare nanocomposites in two consecutive stages. In the first stage, dodecylamine, octadecylamine, hexadecylamine, and hexadecyltrimethyl ammonium bromide were used to prepare various organophilic clays. In the second stage, the bisphenol‐A based epoxy monomer and predetermined amounts of organoclay were mixed together and then cured by an aliphatic polyamine for 20 min under microwave at 400 W. Furthermore, α‐ω diacrylate poly(dimethylsiloxane) was added to the mixture before the curing process to modify the toughness of the samples. 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| subjects | Applied sciences Atoms & subatomic particles Composites Curing Electron microscopes Epoxy compounds Exact sciences and technology Forms of application and semi-finished materials Mechanical properties Microwaves Molecular weight Nanoparticles Polymer industry, paints, wood Samples Technology of polymers Tests Viscosity Water |
| title | Epoxy nanocomposites curing by microwaves |
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