SciELO - Scientific Electronic Library Online

 
vol.16 número3Morfologia de nanocompósitos de polietileno e poliamida-6 contendo argila nacional índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Polímeros

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

Resumo

ALMEIDA, Alessandra E. F. S.  e  FERREIRA, Osny P.. Polyurethane derived from vegetal oil exposed to artificial weathering. Polímeros [online]. 2006, vol.16, n.3, pp.252-256. ISSN 1678-5169.  https://doi.org/10.1590/S0104-14282006000300017.

The mechanical and viscoelastic properties of polyurethane derived from castor oil were obtained after being exposed to artificial weathering with the purpose of evaluating their applicability as polymeric coatings on concrete substrate for Civil Construction. The procedures followed the ASTM G53 for "Operating Light and Water Exposure Apparatus (Fluorescent UV - Condensation Type) for Exposure of Nonmetallic Materials"[1]. Mechanical properties were obtained by means of the ASTM D 638M-96 "Standard Test Method for Tensile Properties of Plastics (Metric)"[2]. Furthermore, a Dynamic Mechanical Analysis (DMA) was carried out in order to study the viscoelastic properties of polyurethane. The results showed that the properties were altered slightly considering the time studied.

Palavras-chave : Polyurethane from castor oil; mechanical properties; viscoelastic properties; artificial weathering.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons