화학공학소재연구정보센터
Polymer(Korea), Vol.19, No.3, 302-308, May, 1995
고온다습 조건이 탄소섬유/PEEK 복합재료의 계면전단강도에 미치는 영향 연구
Studies on the Effects of Hydrothermal Conditions on the Interfacial Shear Strength of Carbon Fiber/PEEK Composite
초록
PEEK 수지가 인장변형될 때 일어나는 cold-drawing 현상을 이용한 single fiber fragment법으로 탄소섬유/PEEK 수지계의 계면전단강도를 성공적으로 측정하였다. 또한, 이 기법을 이용하여 고온다습 조건이 탄소섬유/PEEK 수지계의 계면전단강도에 미치는 영향을 조사하였다. 고온다습 조건을 주기 위해서는 45, 65 그리고 85℃의 증류수 속에 각각 3일, 7일 그리고 15일 동안 담그었다. 고온가습조건으로 처리된 시편들은 Instron을 이용하여 계면결합력을 측정하였다. 이 결과, 탄소섬유/PEEK 수지계의 계면전단강도는 45, 65 그리고 85℃의 증류수 속에 15일 동안 처리하였을때 각각 3.5, 11.6 그리고 15.6% 감소하였다.
Based on the cold-drawing phenomena of dogbone type PEEK specimen during the tensile deformation, single fiber fragment technique is applied successfully to measure the interfacial shear strength of carbon fiber/PEEK system. Also, this technique is used to investigate the hygrothermal effects on the interfacial shear strength of carbon fiber/PEEK system. To provide the hygrothermal condition, each sample is immersed in 45, 65 and 85℃ distilled water for 3, 7 and 15 days, respectively. The interfacial shear strength of the hygrothermally treated specimens is measured by Instron. The experimental results show that the interfacial shear strength of carbon fiber/PEEK system decreased 3.5, 11.6 and 15.6%, respectively, after 15 days immersion in 45, 65 and 85℃ distilled water.
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