Open AccessExperimental investigation on characteristics of resole based phenolic resin
Author(s) -
CH Joseph S. Raju,
T. Ramalingam,
Poonam Yadav
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/872/1/012098
Subject(s) - char , phenol , yield (engineering) , formaldehyde , materials science , phenol formaldehyde resin , composite material , synthetic resin , wetting , chemistry , organic chemistry , pyrolysis
In this study, characteristics of two different resole based phenolic resin being used in aerospace application were investigated. Phenolic resins were advanced by conditioning to bring down its point of trouble. At this stage both resins were separately impregnated with PAN based carbon fabric as reinforcement and evaluated their rheologyproperties. Residues of free phenol, free formaldehyde and sodium content in resins were estimated for both the resins and compared. Also other properties such as neat resin cure characteristics, resin characteristic frequencies, molecular weight distributions, char yield of resins were evaluated and compared. A conclusion is drawn from the test results that char yield is affected by purity of phenolic resin viz presence of unreacted free phenol and free formaldehyde. Also viscosity plays a vital role in wetting of the reinforcement resulting in better interlaminar shear properties.