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The effect of acetone addition on the properties of epoxy

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The effect of acetone addition on the properties of epoxy

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Título The effect of acetone addition on the properties of epoxy
Autor Loos, Marcio Rodrigo
Coelho, Luiz Antônio Ferreira
Pezzin, Sérgio Henrique
Amico, Sandro Campos
Abstract In this work, a varied amount of acetone was employed to dissolve an epoxy resin and then a route was followed to remove the acetone, simulating a frequently used method to disperse nanofillers in thermoset matrices. Analyses were then carried out to address the influence of residual acetone on the curing process and on the epoxy properties. The results showed a detrimental effect on the mechanical properties of the cured epoxy due to the presence of residual acetone and also a less brittle-like fracture of the specimen. Fourier transform infrared spectroscopy and thermogravimetric analyses were additionally used to characterize the cured resins and have also indicated the presence of a small amount of acetone. Nevertheless, rheological measurements indicated that 10.0 wt.% acetone addition on the resin causes a significant decrease in viscosity (around 50%) which may promote a better dispersion of nanofillers.
Contido em Polímeros (São Carlos): ciência e tecnologia. São Carlos, SP. vol. 18, n. 1 (jan./mar. 2008), p. 76-80
Assunto Resina epoxi
Solventes
[en] Acetone, epoxy
[en] Curing process
[en] Epoxy
[en] Mechanical and physical properties
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/20585
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