Pre-polimerizacao de misturas acrilicas via irradiacao gama
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2005
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INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; ENCONTRO NACIONAL DE APLICACOES NUCLEARES, 7th
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Resumo
The continuous development of composites is essential to provide the adequacy of their properties to
innumerable applications, either in medicine or in civil construction areas.
Previous studies were concerned to a pre-polimerization of acrylic mixtures, in order to hinder the decantation
of inorganic charges via irradiation. The success of the experiment, confirmed by MEV inspections, fostered the
continuity of trials, by assessing too polyester resin and its combination with acrylics and inorganic loads, all of
formulations being subjected to gamma radiation, within 3.0 to 15 kGy doses.
Gel extractions tests indicated a trend for higher performance in terms of crosslinking, for samples containing
inorganic charges. Within 7.5 to 15 kGy doses, samples containing polyester presented excellent results for gel
extraction: 84.65 to 95.19%, when compared to samples comprising just acrylics.
Samples comprising acrylics, irradiated at 3.0 kGy, failed when tested as per gel extraction, i.e., dissolved
completely in acetone, solvent commonly used for the extraction.
Furthermore, there will be required further assessments, for all combinations studied, besides investigating
crosslinking agents, which showed a non-expected poor gel fraction results, when combined with acrylics. In
addition, these crosslinking agents will be formulated with polyester resin, to complete the present study.
Further evaluations will consider gamma radiation doses within a 3.0 – 7.5 kGy range.
Como referenciar
CARDOSO, E.C.L.; GERALDES, A.N.; RIBEIRO, M.S.; SANTOS, W.V.C.; PARRA, D.F.; LUGAO, A.B. Pre-polimerizacao de misturas acrilicas via irradiacao gama. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; ENCONTRO NACIONAL DE APLICACOES NUCLEARES, 7th, ago. 28 - set. 2, 2005, Santos, SP. Anais... Disponível em: http://repositorio.ipen.br/handle/123456789/18141. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.