[Film Properties and Measurements] - Determination of film heat resistance, cold resistance and temperature resistance

The measurement of heat resistance, cold resistance and temperature resistance denaturation of coatings is a method to evaluate the stability of coatings in temperature-changing environments. It is mainly used to test the durability and temperature resistance of coatings in high temperature, low temperature and temperature-changing environments.

Coating film heat resistance determination is usually tested using a high temperature box, this instrument can place the coating sample in a constant high temperature environment, usually 60 ℃, 80 ℃ or 100 ℃, to test the durability and heat resistance of the coating in a high temperature environment. Coating film cold resistance determination is usually tested using a low temperature box, this instrument can place the coating sample in a constant low temperature environment, usually -20 ℃ or -30 ℃, to test the durability and cold resistance of the coating in a low temperature environment. The temperature resistance of the coating film can be tested using a hot-cold cycle test, which can cycle between high-low temperatures to test the temperature resistance of the coating sample.

During the test, the appearance, color, adhesion, weight and hardness of the coating sample are detected to evaluate the heat resistance, cold resistance and temperature resistance of the coating.

The determination of heat resistance, cold resistance and temperature resistance of coating films can be used to evaluate the durability and stability of various types of coatings, such as automotive paints, architectural coatings, electronic products, etc. By measuring the performance changes of coatings in temperature-varying environments, the durability and life of coatings can be predicted, and basic data can be provided for formulating coating maintenance and improvement plans.

The following are common test methods for heat resistance, cold resistance and temperature resistance of coating films:

Determination method

Heat resistance test: The heat resistance of the coating film usually refers to the stability and durability of the coating film at high temperature. The heat resistance test of the coating film usually uses a thermogravimetric analyzer or a thermal cycle Tester to simulate the use environment of the coating film at high temperature through the process of heating and cooling cycles, and to test its weight changes and physical properties.

Cold resistance test: The cold resistance of the coating film usually refers to the stability and durability of the coating film at low temperature. The cold resistance test of the coating film usually uses a low Temperature Test Chamber, where the coating film sample is placed in a low temperature environment, and its physical properties are tested, such as bending properties, adhesion, hardness, etc.

Temperature resistance test: The temperature resistance of the coating film usually refers to the stability and durability of the coating film during temperature changes. The temperature resistance test of the coating film usually uses a thermal cycle Tester or a thermal expansion Tester to simulate the use of the coating film in a temperature-changing environment through heating and cooling cycles or temperature changes, and test its physical properties.