ISO 720

Test Materials: ISO 720 specifies the use of glass grains, which should be clean, dry, and free from any external contaminants. The test material must be carefully selected to meet the standards for size and composition, ensuring accurate hydrolytic resistance evaluation at elevated temperatures.
Test Process: The test process involves placing the glass grains in an autoclave or suitable container and subjecting them to a hydrolytic treatment at 121°C for a specified duration. The process simulates the material’s exposure to high-temperature, aqueous conditions to assess its resistance to hydrolytic degradation.
Test Result Interpretation: After the test, the glass grains are evaluated for any significant changes in their physical or chemical properties. The results are interpreted based on weight loss, surface degradation, or other observable effects, with lower resistance indicating higher susceptibility to hydrolytic breakdown.