意义和目的
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. 然而, these test methods differ in terms of pendulum size, oscillation period, and amplitude.

5.3 一般来说, 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 通过摆锤阻尼测试测定有机涂层硬度的标准测试方法

范围
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 (但技术上并不等同).

1.4 以 SI 单位表示的值应被视为标准值. 其他计量单位不包括在本标准中.

ASTM D4366-2021 通过摆锤阻尼测试测定有机涂层硬度的标准测试方法

1.5 本标准并非旨在解决所有安全问题, 如果有的话, 与其使用相关. 本标准的使用者有责任建立适当的安全机制, 健康和环境实践，并在使用前确定监管限制的适用性.

1.6 这个国际标准就是技术性贸易壁垒, 根据世界贸易组织委员会发布的 “关于制定国际标准, 决定原则的指导方针和建议” 建立国际公认的标准化原则.