In the field of modern engineering, fiberglass reinforced composites are widely used in various structures, but over time, these materials may be affected by the natural environment and aging. In order to better understand and predict this aging process, researchers have adopted various aging test methods. This paper will introduce the aging test methods of fiberglass reinforced composites, including atmospheric exposure test, accelerated atmospheric exposure test and artificial accelerated weathering test.
1. Atmospheric exposure test method
Atmospheric exposure testing is a method that approaches the actual use environment of materials, especially for the climate performance of materials. The choice of test site should represent the different climate environments of the tested materials under different use conditions. The results show that exposure testing in different climate regions shows that the humid tropical and sub-humid tropical climate regions have the fastest aging rate and the most opportunities for molds to grow. The data of this test method can be used as a comparative basis for Miscellaneous artificial aging tests, with Reliability and authenticity.
2. Accelerated atmospheric exposure test method
In order to overcome the shortcoming of the long period of natural atmospheric exposure test, researchers have introduced the accelerated atmospheric exposure test method. By using an exposure frame with a special structure, the test can be carried out in the natural environment, and the results have a good correlation with the natural atmospheric exposure test. Although the equipment investment is high, it improves the problem of long period of conventional aging and shortens the test period.
3. Manual accelerated weathering test method
The accelerated weathering test method is carried out in various aging chambers in the laboratory. Among them, the boiling water decoction method, artificial climate test, wet heat aging test, salt fog corrosion test and mold test are commonly used methods. These tests can simulate and strengthen the aging factors of materials under different environment conditions, and quickly obtain test results. In particular, the wet heat aging test takes into account the influence of Humidity and temperature, which is applicable to some heterogeneous materials.
Overall, through these aging test methods, researchers can gain a more comprehensive and in-depth understanding of the aging characteristics of fiberglass reinforced composites, providing an important reference for the design and use of materials.
