ASTM International - ASTM D1329-16(2021)
Standard Test Method for Evaluating Rubber Property-Retraction at Lower Temperatures (TR Test)
|Publication Date:||1 May 2021|
|ICS Code (Rubber):||83.060|
significance And Use:
4.1 The difference between the temperature at which a vulcanizate retracts 10 % (TR10) and the temperature at which a vulcanizate retracts 70 % (TR70) increases as the tendency to crystallize... View More
4.1 The difference between the temperature at which a vulcanizate retracts 10 % (TR10) and the temperature at which a vulcanizate retracts 70 % (TR70) increases as the tendency to crystallize increases.
4.2 TR70 correlates with low-temperature compression set.
4.3 TR10 has been found to correlate with brittle points in vulcanizates based on polymers of similar type.
4.4 In general, the retraction rate is believed to correlate with low-temperature flexibility of both crystallizable and noncrystallizable rubbers.View Less
1.1 This test method describes a temperature-retracti
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.