In a laboratory environment, the performance testing of coatings is a serious discipline involving the practical application of coatings, their performance under various conditions, and the long-term stability of coatings.
Outdoor exposure test
This test method is very important because it provides information on the performance of coatings in the real environment. Although testing coatings for accelerated damage under harsh conditions can yield quick results, this accelerated method may not always be consistent with long-term actual use. Long-term exposure in a real outdoor environment provides the most realistic data. At the same time, the performance of new Coatings can provide us with more information than that of Coatings with known performance.
Laboratory simulation test
This type of test is carried out in a controlled environment and simulates the performance of Coatings under specific conditions. For example, the anti-stoning instrument in the automotive industry has a high predictive value compared with the actual stoning damage. However, the limitation of this type of test is that it can only predict the performance of coatings under specific conditions, and it may be difficult to fully predict their performance in complex environments.
Empirical test
These tests provide predictions of Coatings performance based on prior knowledge and experience. As they are often used for quality control, results may deviate and require multiple, sexual repeability to obtain accurate data. Film resilience and substrate adhesion are key parameters for this type of test.
Coating performance testing is not only to ensure its mass, but more importantly, to predict its performance in various practical applications. Whether it is outdoor exposure, laboratory simulation or empirical testing, each method has its own unique value and limitations. In a good case, the combined use of these methods can provide us with comprehensive coating performance information. Further, in order to ensure Coatings' high performance and long service life, we need a more in-depth understanding of the basic mechanical properties of coatings, such as film toughness, adhesion and other related properties. This requires us to continuously research and develop new test methods and techniques in the laboratory to meet the evolving needs of Coating technology.
