Bedeutung und Zweck
3.1 Irgendwelche Auswirkungen, wie Farbveränderung, Blasenbildung. Beobachten und notieren Sie den Haftungsverlust, softening or brittleness.

Geltungsbereich
1.1 The practice consists of determining the failure resistance of organic finishes immersed in detergent solutions in an accelerated manner.

1.2 In SI-Einheiten ausgedrückte Werte gelten als Standards. Values in parentheses are for reference only.

1.3 Diese Norm soll nicht alle Sicherheitsprobleme behandeln (meaning and purpose) mit seiner Verwendung verbunden

4.1 Für viele Anwendungen, the ability of a paint or coating to resist deterioration of physical and optical properties due to exposure to light, Hitze, and water may be very important. This practice aims to cause changes in attributes related to end-use conditions, including the effects of sunlight, Feuchtigkeit, and heat. The exposures used in this practice are not intended to model the deterioration caused by local weather phenomena such as atmospheric pollution, biological attack, and saline-water exposure.

4.2 Caveats – Results may change when different operating conditions are used. daher, no reference to the use of this practice may be made unless accompanied by a report prepared under Section 10 describing the specific operating conditions used. See Practice G151 for details of the caveats applicable to the use of the results obtained under this practice.

ASTM D 5031-2018 “Closed Carbon Arc Exposure Test for Paints and Related Coatings”

Notiz 2: For additional information on sources of variability and strategies to address variability in the design, execution, and data analysis of laboratory accelerated exposure trials, see Guide G141.

4.2.1 The spectral power profiles of light from a closed carbon arc are significantly different from those generated by light and water exposure devices using other carbon arc configurations or other light sources. The type and rate of degradation and performance ranking generated by exposure to closed carbon arcs may be quite different from those generated by exposure to other types of laboratory light sources.

4.2.2 Inter-laboratory comparisons are valid only if all laboratories use the same type of carbon arcs, Filter, and exposure conditions.

4.3 The reproducibility of test results between laboratories has been shown to be good when evaluating the stability of the material according to the performance class compared to other materials or controls. IV,5 daher, it is highly recommended to expose similar materials with known properties (Kontrolle) at the same time as the test material. At least three replications of each material are recommended to allow statistical evaluation of the results.

4.4 Test results will depend on the degree of care taken to operate the equipment according to practice G153. Important factors include regulation of line voltage, absence of salt or other water deposits, temperature and humidity control, and electrode conditions.

4.5 All exposures referred to in accordance with this practice shall include a complete description of the test period used.

ASTM D 5031-2018 “Closed Carbon Arc Exposure Test for Paints and Related Coatings”

Geltungsbereich
1.1 This procedure covers the selection of test conditions for accelerated exposure testing of coatings and related products in closed carbon arc units operated in accordance with practices G151 and G153. The practice also includes preparation of specimens, suitable test conditions for coatings, and evaluation of test results. Tisch 1 describes the commonly used test conditions.

1.2 This practice does not include filtered open-flame carbon arc exposure of paints and associated coatings, as described in Practice D822/D822M. Practice D3361/D3361M covers an additional procedure for exposing these products, where specimens are exposed to radiation from an unfiltered open flame carbon arc that produces shorter wavelengths and higher levels of shorter-wavelength radiation than a filtered open flame or closed carbon arc.

Notiz 1: Practice D3361/D3361M requires the use of an open flame carbon arc device with automatic humidity control.

1.3 In SI-Einheiten oder Zoll-Pfund-Einheiten ausgedrückte Werte sollten separat als Standardwerte behandelt werden. The values specified in each system may not be exactly equivalent; daher, each system should be used independently of each other. Merging the values of the two systems may result in non-compliance with the criteria.

1.4 Diese Norm soll nicht alle Sicherheitsprobleme behandeln, wenn überhaupt, mit seiner Verwendung verbunden. Es liegt in der Verantwortung des Anwenders dieser Norm, für angemessene Sicherheit zu sorgen, Gesundheits- und Umweltpraktiken zu prüfen und vor der Verwendung die Anwendbarkeit behördlicher Beschränkungen zu ermitteln.

ASTM D 5031-2018 “Closed Carbon Arc Exposure Test for Paints and Related Coatings”

1.5 Dieser internationale Standard wurde in Übereinstimmung mit den international anerkannten Standardisierungsgrundsätzen entwickelt, die in der Entscheidung über Grundsätze für die Entwicklung internationaler Standards festgelegt sind, Richtlinien und Empfehlungen des Ausschusses für technische Handelshemmnisse der Welthandelsorganisation. If any). Es liegt in der Verantwortung des Anwenders dieser Norm, für angemessene Sicherheit zu sorgen, Gesundheits- und Umweltpraktiken zu prüfen und vor der Verwendung die Anwendbarkeit behördlicher Beschränkungen zu ermitteln.

1.4 Dieser internationale Standard wurde in Übereinstimmung mit den international anerkannten Standardisierungsgrundsätzen entwickelt, die in der Entscheidung über Grundsätze für die Entwicklung internationaler Standards festgelegt sind, Richtlinien und Empfehlungen des Ausschusses für technische Handelshemmnisse der Welthandelsorganisation.