SciELO - Scientific Electronic Library Online

vol.27 número4Effect of concentrations of plasticizers on the sol-gel properties developed from alkoxides precursors índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados




Links relacionados



versão impressa ISSN 0104-1428versão On-line ISSN 1678-5169


GUILHERME, Fernanda et al. Evaluation of Out-of-Autoclave (OOA) epoxy system. Polímeros [online]. 2017, vol.27, n.4, pp.353-361. ISSN 0104-1428.

Epoxy resins (EP) usually cure in autoclave to minimize resin voids and to achieve the desired resin/fiber ratio. Cure parameters such as temperature, vacuum and pressure levels are controlled and monitored. Aiming time and cost optimization, new out-of-autoclave (OOA) cure processes have been developed lately. This study evaluated the cure cycle and the effect of non-programmed interruptions in an OOA process. Fourier Transform Infrared spectroscopy (FT-IR) results show similarities between the resin used and diglycidyl ether of bisphenol A (DGEBA) and also that the curing system is composed of cyan and sulfur hardeners, codified in industry, as Components of #2511 Resin System. The cure cycle and its interruptions were simulated by dynamic-mechanical analysis (DMA). The samples obtained were evaluated by FT-IR and differential scanning calorimetry (DSC), whose results show that the degree of cure varying between 0.8 to 0.85 was achieved at 120 °C.

Palavras-chave : DMA; DSC; epoxy system; FT-IR; OOA.

        · texto em Inglês     · Inglês ( pdf )