Test Background
Paint and varnish damping test can determine the swing rod damping performance of single or multi-layer coatings of paint, varnish and related products.
Zhongke Testing Reliability Experiment Center has the capability of reliability testing of various paints and varnishes, and provides professional damping test services for paints and varnishes.
Scope of tests
Color paint is divided into primer and topcoat: primer is divided into primer, putty, mid-coat, sealer, anti-rust paint, etc.; topcoat is divided into enamel paint, special topcoat, etc.
The paint and film of varnish are transparent and are divided into ester varnish, shellac varnish, phenolic varnish, alkyd varnish, acrylic varnish, polyester varnish, high-performance varnish, fluorocarbon varnish, etc.
Test method
The pendulum stationary on the surface of the coating begins to swing, and the value measured within the specified swing period is used to represent the damping time of the amplitude attenuation. The shorter the damping time, the lower the hardness.
This method is divided into method A and method B. Method A is the Koenig and Persaz pendulum rod damping test, and method B is the double pendulum rod damping test.
Test standard:
GB/T 1730-2007 Paints and varnishes - Pendulum damping test
ISO 1522: 1998 Paints and varnishes Pendulum damping test
ASTM ANS/ISO1522-1998 (E) Paints and varnishes Pendulum damping test
GB/T 308 rolling bearing steel ball
GB/T 3186-2006 Sampling of paints, varnishes and raw materials for paints and varnishes
GB/T 9271 Paints and varnishes Standard test plate
GB 9278 Temperature and humidity for condition conditioning and testing of paint samples
GB/T 13452.2 Determination of paint and varnish film thickness
GB/T 20777-2006 Inspection and preparation of paint and varnish samples
ASTM D 4366: 1995 Test Method for Hardness of Organic Coatings by Pendulum Damping Test
