The high-low Temperature Test Chamber is a device used to simulate temperature changes in various extreme environments, and is often used for high-low temperature resistance tests of coatings. During the production and application of coatings, various complex environments are often faced, such as high temperature, low temperature, humidity, etc., and the high-low Temperature Test Chamber can test the performance and durability of coatings by simulating these extreme environments, so as to better Meet the needs of practical applications.
application background
The reason for the high-low temperature resistance test of the coating is that the coating will be affected by different temperatures during use. If the coating cannot withstand the high-low temperature environment, a series of problems will occur, such as cracking, peeling, aging, etc.
Specifically, high temperature will cause the coating to lose its elasticity, become hard and brittle, making the coating easy to crack or peel off; low temperature will cause the coating to become brittle, reduce its impact resistance, and easily peel off. In addition, the temperature will also affect the physical properties such as the color and gloss of the coating, and affect the appearance of the coating.
Therefore, through the high-low temperature resistance test, the thermal stability and cold resistance of the coating can be evaluated, and its performance at different temperatures can be understood, thereby providing a scientific basis for the selection and use of the coating.
experiment procedure
The high-low temperature resistance test of coating usually adopts the following steps:
Sample preparation: Mix the paint to be tested evenly according to a certain ratio, and coat it on a specific substrate to form a film of a certain thickness.
Place the sample: stick the coated sample film on the sample holder in the test box.
Temperature change: Set the temperature of the Test Chamber in a certain high or low temperature range, and keep it for a certain period of time, generally ranging from several hours to several days.
Sampling test: After the high-low temperature test, remove the sample film for testing. Common detection methods include visual inspection, tensile test, shear test, hardness test, wear test, etc.
North and South Chao reminds you: when conducting high-low temperature tests, you should choose the appropriate temperature range and holding time according to the specific situation. At the same time, air circulation should be ensured in the Test Chamber so as not to affect the test results.
