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ASTM D1693-15
Standard Test Method for Environmental Stress-Cracking of Ethylene Plastics
Automaticky preložený názov:
Štandardná skúšobná metóda pre environmentálne stres krakovania etylénu plastov
NORMA vydaná dňa 1.5.2015
Informácie o norme:
Označenie normy: ASTM D1693-15
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.5.2015
Kód tovaru: NS-591316
Počet strán: 11
Približná hmotnosť: 33 g (0.07 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D1693-15 :
Keywords:
environmental resistance, polyethylene, stress-cracking,, ICS Number Code 83.080.20 (Thermoplastic materials)
Doplňujúce informácie
| Significance and Use | ||||||||||||||||||
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5.1 This test method may be used for routine inspection purposes by subjecting a required number of specimens to the test conditions for a specified time and noting the number that fail. The cracking obtained with the test reagent is indicative of what may be expected from a wide variety of surface-active agents, soaps, and organic substances that are not absorbed appreciably by the polymer. 5.2 Environmental stress-cracking is a property that is highly dependent upon the nature and level of the stresses applied and on the thermal history of the specimen Note 2: Different types of polyethylene plastics as defined in Specification D1248 are generally tested under different levels of strain and stress. When it is expressly desired to compare the types at equal levels of strain, the specimens for all types should be tested under Condition B, Table 1 5.3 Information from this test method is not intended to be used for direct application to engineering problems. Note 3: Caution should be used in comparing and ranking
various ethylene plastics into distinct and separate groups by this
test method (see Section 13
and Note 12).
As thermal history is recognized as an important variable, test results by this test method employing laboratory molded samples cannot necessarily be expected to show agreement with test results from samples obtained by other means. The true performance potential of a given ethylene plastic may, however, best be determined with specimens obtained from commercially prepared items 1.1 This test method covers the determination of the susceptibility of ethylene plastics, as defined in Terminology D883, to environmental stress-cracking when subjected to the conditions herein specified. Under certain conditions of stress and in the presence of environments such as soaps, wetting agents, oils, or detergents, ethylene plastics may exhibit mechanical failure by cracking. 1.2 The values stated in SI units are to be regarded as standard. 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 and health practices and determine the applicability of regulatory limitations prior to use. Note 1: There is no known ISO equivalent to this
standard.
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