Case Study on Aging Test of Polyester Powder Coatings for Construction
DSM Resin is a Dutch manufacturer of polyester powder coatings for construction. Their customers are mainly the construction industry. Therefore, DSM resins are concerned about the changes in performance of their products in long-term natural light environments.
In the 60 years that DSM has produced powder coatings, they have carried out a large number of weathering tests and accumulated more than 30 years of data. Like many paint and coating manufacturers, the main types of degradation that they are concerned about are color changes and loss of gloss. DSM evaluates and tests color and gloss changes over a period of about 10 years. Considers weathering testing a key component of its product development strategy. The large amount of data collected allows them to provide a 10-year life expectancy. According to DSM, the most important benefit of this testing effort is customer satisfaction, which you can't price.
Problem Description
The main problem that DSM encountered was that they purchased three UV accelerated aging test boxes from a brand of equipment manufacturer for the ASTM G154 test (the test time exceeded 500 hours). A gloss loss> 50% indicates a critical failure mode. This test method is an internationally recognized standard for building and steel coating testing. DSM needs to ensure the stability and consistency of products from the results of accelerated aging tests, thereby improving its market reputation. However, three UV aging test chambers are installed in the same laboratory and are only a few meters away. Often, stable, consistent and comparable test results cannot be provided. The maintenance staff of the equipment manufacturer spent a lot of time in three years trying to make the equipment provide stable and consistent results, but failed.
During the testing process, we regularly evaluate test samples and share them with DSM. As a result, the results provided by these three devices not only provide a standard of comparable results, but also within the time frame specified by DSM. Customers are satisfied with the test results.
Benefits of testing
Benefits of the test DSM resins obtained the expected gloss and color change results from the UV aging test chamber, which gave them a high degree of confidence in the joint laboratory accelerated aging and natural aging test scheme during the development of new coatings. This is in line with LIB's key factor in providing accelerated aging-as a tool for directional decision making. UV ultraviolet accelerated aging test box can quickly test in the laboratory, and then perform natural outdoor aging test.
