Accession Number : ADA331077

Title :   A Mechanism for Blistering of Carbon Fiber Composites.

Descriptive Note : Conference proceedings,

Corporate Author : RHODE ISLAND UNIV KINGSTON DEPT OF CHEMICAL ENGINEERING

Personal Author(s) : Miriyala, S. K. ; Rockett, T. J. ; Tucker, W. C. ; Brown, R.

PDF Url : ADA331077

Report Date : 23 JUN 1994

Pagination or Media Count : 14

Abstract : Blisters containing fluid with a high pH were induced in a carbon fiber vinyl ester polymer matrix composite by cathodic polarization in a sodium chloride solution. The oxygen content of the solution was varied in order to determine the effect of oxygen on the blister process. It was found that increasing the oxygen content in solution decreased the time for blister initiation, indicating that the reduction of oxygen to form hydroxyl ions was an important reaction. Calculations indicated that a similar cumulative charge density was required for blister initiation for the different oxygen contents, confirming the importance of oxygen to the blister process. A mechanism for blister formation dependent upon oxygen reduction to hydroxyl ions and the subsequent formation of an osmotic cell is outlined from the results of this study.

Descriptors :   *SYMPOSIA, *CARBON FIBERS, *GALVANIC CORROSION, POLARIZATION, SURFACE ANALYSIS, FIBER REINFORCED COMPOSITES, ELECTROCHEMISTRY, OXYGEN, CHARGE DENSITY, SODIUM CHLORIDE, PH FACTOR, HYDROXYL RADICALS.

Subject Categories : Industrial Chemistry and Chemical Processing
      Properties of Metals and Alloys
      Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE