ASTM D0832-07R24
Standard Practice for Rubber Conditioning For Low Temperature Testing
| Označení normy: | ASTM D0832-07R24 |
| Vydáno: | 01.05.2024 |
| Status: | Active |
| Počet stran: | 4 |
| Sekce: | 09.01 |
| Označení: | brittleness; brittle point; crystallization; enthalpy; first order transition; glass transition; low temperature test; modulus; plasticizer effects; resilience; second order transition; simple temperature effects; solubility; stiffening; subnormal temperature; thermodynamic change; viscoelasticity; |
| ASTM označení: | ASTM D832 |
| Nahrazuje: | D0832-07R18 |
1.1 This practice covers the characteristic mechanical behavior of rubbers at low temperatures, and outlines the conditioning procedure necessary for testing at these temperatures.
1.2 One of the first stages in establishing a satisfactory technique for low temperature testing is the specification of the time and temperature of exposure of the test specimen. It has been demonstrated that any one or more of the following distinct changes, which are detailed in Table 1, may take place on lowering the test temperature:
1.2.1 Simple temperature effects,
1.2.2 Glass transitions, and
1.2.3 First order transitions (crystallization), and solubility and other effects associated with plasticizers.
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.