Environmental Effects on Graphite Fiber Reinforced PMR-15 Polyimide

Autor:	M. P. Hanson, T. T. Serafini
Rok vydání:	2009
Předmět:	Materials science Moisture Flexural strength Environmental tests Fiber Graphite Composite material Polyimide Hydrothermal circulation
DOI:	10.1520/stp29349s
Popis:	Studies were conducted to establish the effects of thermo-oxidative and hydrothermal exposure on the mechanical properties of T300 graphite fabric reinforced PMR-15 composites. The effects of hydrothermal exposure on the mechanical properties of HTS-2 continuous graphite fiber composites were also investigated. The thermo-oxidative stability characteristics of T300 fabric and T300 fabric/PMR-15 composites were determined. Flexural strengths of specimens were determined. The useful lifetime of T300 fabric/PMR-15 composites in air at 316 C was found to be about 100 hours. The useful lifetimes in air at 228 and 260 C were determined to be 500 and 1000 hours, respectively. Absorbed moisture was found to reduce the elevated temperature properties of both the T300 fabricate and HTS-2 continuous fiber composites. The moisture effect was found to be reversible. Previously announced in STAR as N81-32194
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::77814eeefa7ed9855d2df7975dfae4b7 https://doi.org/10.1520/stp29349s Zobrazit plný text záznamu