ABS, HIPS and PPO - Chemical etching

ABS, HIPS and PPO - Chemical etching

Material Name: ABS, HIPS and PPO
Recipe No.: 11274
Primary Chemical Element in Material: No data
Sample Type: Bulk
Uses: General microstructure
Etchant Name: None
Type (Macro/Micro): Micro
Etching Method: Chemical
Etchant (Electrolyte) Composition: 400 ml H2SO4, 130 ml H3PO4, 123 ml distilled water, 20 g CrO3.
Procedure (Condition): Micotomed blocks immersed for periods of 15-180 s. Conditon critical for ABS.
Note: Polymers. PPO (2,6-dimethyl-123-phrnylene oxide). Bucknall and coworkers.
Reference: Vander Voort, Metallography Principles and Practice, McGraw-Hill, Inc., 1986, p. 710.