Potřebujeme váš souhlas k využití jednotlivých dat, aby se vám mimo jiné mohly ukazovat informace týkající se vašich zájmů. Souhlas udělíte kliknutím na tlačítko „OK“.
Standard Practice for Air-Oven Aging of Polyolefin Geomembranes
Přeložit název
NORMA vydána dne 1.6.2018
Označení normy: ASTM D5721-08(2018)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.6.2018
Kód zboží: NS-849384
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
geomembrane, oven aging, polyolefin,, ICS Number Code 83.080.20 (Thermoplastic materials)
Significance and Use | ||||||||||||||||||||||||
4.1 Under the severe conditions of this test, the specimens undergo degradation at a rate that is a function of the thermal endurance of the geomembrane under examination. 4.2 The elevated temperature for this practice should represent conditions that are sufficiently severe to induce failure of polyolefin geomembranes within an abbreviated period of time. 4.3 The rate of change of a particular property as a function of temperature may be evaluated using the temperatures and times outlined in Practice D3045. 4.4 Any correlation between this practice and natural life of these materials must be determined for the particular application in which the materials are to be used. 4.5 Air-oven aging can be used to evaluate and compare the performance of various heat stabilizer packages. |
||||||||||||||||||||||||
1. Scope | ||||||||||||||||||||||||
1.1 This practice covers a means for estimating the resistance of polyolefin geomembranes to thermal aging in the presence of air. Only the procedure for heat exposure is specified, not the test method or specimen. The effect of heat on any particular property may be determined by selection of the appropriate test method and specimen. 1.2 This practice should be used as a guide to compare thermal aging characteristics of materials as measured by the change in some property of interest. This practice does not predict thermal aging characteristics where interactions between stress, environment, temperature, and time control failure. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. 1.5 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. |
||||||||||||||||||||||||
2. Referenced Documents | ||||||||||||||||||||||||
|
Chcete pravidelně odebírat informace o nově vycházejících normách z celého světa a to zcela zdarma?
Přihlašte se k odběru. Vše je velice jednoduché a absolutně ZDARMA.
Na výběr máte vydavatele z celého světa.
Poslední aktualizace: 07.05.2024 (Počet položek: 2 897 585)
© Copyright 2024 NORMSERVIS s.r.o.