This video shows how low temperature retraction (TR) is determined according to ISO 2921 and ASTM D1329.
The test measures the retraction of stretched test pieces, which are cooled to -70°C and then the temperature is increased by 1 °C/ min.
This video shows how low temperature retraction (TR) is determined according to ISO 2921 and ASTM D1329.
The test measures the retraction of stretched test pieces, which are cooled to -70°C and then the temperature is increased by 1 °C/ min.