The effects of water absorption on an ester vinyl resin system

Materials Research

Ledjane Lima Sobrinho¹  Marysilvia Ferreira¹  Fernando Luiz Bastian¹ 

[1] ,UFRJ COPPE Department of Metallurgical and Materials EngineeringRio de Janeiro RJ ,Brazil

关键词: polymer;    vinyl ester resin;    mechanical properties;    hygrothermal ageing;   

DOI  :  10.1590/S1516-14392009000300017

来源: SciELO

【 摘 要 】

Derakene is a vinyl ester resin largely employed as matrix for polymeric based composite systems. In this work, the performance of such polymeric system was evaluated considering the effect of hygrothermal aging. The mechanical and thermal properties were examined for the processed material before and after ageing in water at 60 ºC for a maximum period of 64 days. Both analyses indicated the occurrence of post cure of the system after 16 days due to exposition at 60 ºC in water, which was also confirmed by analyses in samples with post cure treatment. Moreover, it was observed plasticizing of resin after 36 and 64 days of ageing. Micro structural and fracture surface analyses were carried out in order to characterize the samples. The appearance of surface voids was also observed.

【 授权许可】

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