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ASTM D1435-13

Standard Practice for Outdoor Weathering of Plastics

Automaticky přeložený název:

Standardní praxe pro venkovní zvětráváním plastů

NORMA vydána dne 1.6.2013

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Dostupnost	SKLADEM
Cena	1 761.20 Kč bez DPH
1 761.20 Kč

Informace o normě:

Označení normy: ASTM D1435-13
Poznámka: NEPLATNÁ
Datum vydání normy: 1.6.2013
Kód zboží: NS-17277
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Kategorie - podobné normy:

Plastické hmoty obecně

Anotace textu normy ASTM D1435-13 :

Keywords:
exposure, natural weathering, outdoor weathering, plastics, ICS Number Code 83.080.01 (Plastics in general)

Doplňující informace


Significance and Use
4.1 Tests conducted in accordance with this practice are used to evaluate the stability of plastic materials when they are exposed outdoors. The relative durability of plastics in outdoor use can be very different depending on the location of the exposure because of differences in ultraviolet (UV) radiation, time of wetness, temperature, pollutants, and other factors. It cannot be assumed, therefore, that results from one exposure in a single location will be useful for determining relative durability in a different location. Exposures in several locations with different climates that represent a broad range of anticipated service conditions are recommended. 4.1.1 Because of year-to-year climatological variations, results from a single exposure test cannot be used to predict the absolute rate at which a material degrades. Several years of repeat exposures are needed to get an average test result for a given location. 4.2 The results of short-term exposure tests can provide an indication of relative outdoor performance, but they should not be used to predict the absolute long-term performance of a material. The results of tests conducted for less than twelve months will depend on the particular season of the year in which they begin.

1. Scope
1.1 This practice is intended to cover procedures for the exposure of plastic materials to weather. 1.2 This practice is limited to the method by which the material is to be exposed and the general procedure to be followed. It is intended for use with finished articles of commerce as well as with all sizes and shapes of test specimens. 1.3 Means of evaluation of the effects of weathering will depend on the intended use for the test material. 1.4 The values stated in SI units are to be regarded as the standard. 1.5 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.
ISO 877.2-2009	Plastics--Methods of exposure to solar radiation--Part 2: Direct weathering and exposure behind glass Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
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