Signification et objectif
4.1 This guide provides a useful summary of procedures for selecting and using test coating powders and powder coatings. It is applicable to thermoplastic and thermoset coatings unless otherwise stated. By design, this guide is not intended to address test methods or procedures developed specifically for the functional powder coatings market, namely those coating powders used in pipes or reinforcing rebar (rebar). Information on current test procedures for coating powders and powder coatings for pipes and reinforced rebar can be obtained through their respective ASTM subcommittees A01.05 and D01.48.

4.2 The choice of the methodology to follow and the interpretation of the results needs to depend on the experience and requirements of each case, ainsi que l'accord entre l'acheteur et le vendeur. It should be noted that many of the methods used to characterize paint powders, such as gel time (Section 16) and tilt flow (Section 17), are primarily used for the relative comparison of two paint powders, rather than giving test values that can be interpreted as good or bad. The interpretation of the test results will depend on the specific application in question and often also on the chemical nature of the coating powder used.

ASTM D3451-06-2017 Test des revêtements en poudre et des revêtements en poudre

Champ d'application
1.1 This guide covers the selection and use of procedures for testing paint powders and powder coatings. Tableau 1 répertorie les méthodes de test incluses. If more than one test method is listed for the same feature, no attempt is made to show that one method is superior to the other. The choice of the method to follow needs to depend on the experience and requirements of each case, as well as the agreement between buyer and seller.

1.2 This guide also refers to methods developed specifically for the paint powder industry by the Powder Coating Association (PCI) and the International Standards Organization (OIN).

1.3 This guide describes the testing of paint powders by electrostatic spraying, fluidized bed, or any other applicable method.

ASTM D3451-06-2017 Test des revêtements en poudre et des revêtements en poudre

1.4 Les valeurs exprimées en unités SI doivent être considérées comme des valeurs standard. Les autres unités de mesure ne sont pas incluses dans cette norme.

1.5 Cette norme n'est pas destinée à traiter tous les problèmes de sécurité, si seulement, associé à son utilisation. Il est de la responsabilité des utilisateurs de cette norme d'établir des pratiques de sécurité et de santé appropriées et de déterminer l'applicabilité des restrictions réglementaires avant utilisation..

1.6 La présente Norme internationale a été élaborée conformément aux principes de normalisation internationalement reconnus établis dans la Décision sur les principes pour l'élaboration de normes internationales., Lignes directrices et recommandations émises par le Comité des obstacles techniques au commerce de l'Organisation mondiale du commerce.