Mahale, Santhosh and Rajamani, Deepika and Revathi, A and Prakash, M.Rajendra and Srihari, Shylaja and Rao, RMVGK (2004) Hot-wet property characterisation of a high-temperature cured glass-epoxy composite in immersion environment. Journal of Reinforced Plastics and Composites, 23 (17). pp. 1883-1892. ISSN 0731-6844
Full text not available from this repository.Abstract
The hygrothermal diffusion and degradation behavior of a high-temperature cured glass-epoxy (Epoxy Novolac - EPN) composite system was studied under two environmental conditions (i.e. 323amp;deg;K and 343amp;deg;K immersion in distilled water). Samples immersed at 343amp;deg;K showed higher diffusivity (Dlt;subgt;clt;/subgt;) value and lower saturation time (tlt;subgt;mlt;/subgt;) than those of 323amp;deg;K immersion while the maximum moisture content (Mlt;subgt;mlt;/subgt;) remained the same, good Fickian correlation were observed for the composite system. As regards the degradative effects, the glass transition temperature (Tlt;subgt;glt;/subgt;) of the composite decreased with increased moisture content showing a maximum drop of 30amp;deg;C at full saturation, while the mechanical properties (ILSS and IPS) of saturated specimens degraded upto 26 and 33% respectively. Further these mechanical properties obtained at 70amp;deg;C/85%RH test condition showed good correlations with those predicted by a theoretical equation (Chamis et al. An Intergrated Theory for Predicting the Hydrothermo Mechanical Response of Advanced Composite Structural Components, Lewis Research Center, Cleveland, Ohio, NASA Technical Memorandum 73812).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Composite materials;Epoxy resins;Curing;Glass transition;Shear strength;Diffusion;Degradation;Resin transfer molding |
| Subjects: | CHEMISTRY AND MATERIALS > Composite Materials |
| Depositing User: | Mrs Manoranjitha M D |
| Date Deposited: | 28 Mar 2007 |
| Last Modified: | 24 May 2010 04:25 |
| URI: | http://nal-ir.nal.res.in/id/eprint/4128 |
Actions (login required)
 |
View Item |
