Betekenis en doel
5.1 have found pendulum damping test in detecting the coating hardness difference has good sensitivity and the hardness is defined as the resistance to deformation.

5.2 The two procedures given in these test methods embody the principle that the softer the surface, the faster the oscillation amplitude of the pendulum in contact with the surface decreases. Echter, these test methods differ in terms of pendulum size, oscillation period, and amplitude.

5.3 generally speaking, the king of damping time is about pell, half of the pendulum.

5.4 in terms of measuring soft coating hardness, Persoz pendulum than Konig has more discrimination, but because it tends to skidding on the surface of the low friction coefficient, so may not be suitable for the test is hard, smooth film.

5.5 the pendulum and interaction between paint film is complex, depends on the elastic and viscoelastic, and may not be in two types of pendulum to establish a precise relationship between tests.

ASTM D4366-2021 standaardtestmethode voor het bepalen van de hardheid van organische coatings door middel van de slingerdempingstest

Reikwijdte van
1.1 these test methods include the use of pendulum damping tester is to determine the hardness of organic coating, the organic coating has been applied in an acceptable plane surface rigidity, such as metal or glass panel.

1.2 based on pendulum type two kinds of different test methods are as follows:

1.2.1 test method A – king pendulum hardness testing.

1.2.2, test method B – pell, soz pendulum hardness testing.

1.3 This standard is similar to ISO 1522 in content (but not technically equivalent).

1.4 Waarden uitgedrukt in SI-eenheden moeten als standaardwaarden worden beschouwd. Andere meeteenheden zijn niet opgenomen in deze standaard.

ASTM D4366-2021 standaardtestmethode voor het bepalen van de hardheid van organische coatings door middel van de slingerdempingstest

1.5 Deze norm is niet bedoeld om alle veiligheidsproblemen aan te pakken, indien aanwezig, die verband houden met het gebruik ervan. Het is de verantwoordelijkheid van de gebruiker van deze norm om de juiste veiligheid te garanderen, gezondheids- en milieupraktijken en om vóór gebruik de toepasbaarheid van wettelijke beperkingen vast te stellen.

1.6 this international standard is the technical barriers to trade, according to the world trade organization committee issued “about setting international standards, guidelines and recommendations of the decision of the principle of” the establishment of the internationally recognized principles of standardization.