The yellowing aging test chamber can perform two types of tests: aging and yellowing resistance.
Yellowing resistance: This machine simulates the atmospheric environment and the effect of ultraviolet radiation from sunlight on appearance. Generally, it is believed that testing for nine hours at 50°C is theoretically equivalent to six months of exposure to the atmosphere.
Aging: This machine accelerates the deterioration of vulcanized rubber to calculate the change rate of tensile strength and elongation before and after heating. Generally, it is believed that testing for one day at 70°C is theoretically equivalent to six months of exposure to the atmosphere.
Working principle
Samples undergo accelerated aging tests by mimicking the effects of ultraviolet radiation from natural sunlight, along with high-temperature and high-humidity conditions. Throughout the testing process, the samples are subjected to specific wavelengths of UV light while maintained in a controlled environment with predefined temperature and humidity levels. This setup accelerates material reactions such as oxidation and degradation, resulting in visible color alterations, particularly yellowing. The assessment of the materials' resistance to yellowing involves analyzing and quantifying the differences in color and performance characteristics of the samples before and after exposure to these conditions.
Scope of Application
- Plastic Products: Such as plastic pipes, plastic sheets, plastic films, plastic toys, etc., to test their resistance to yellowing during long-term exposure to light and use.
- Rubber Products: Including rubber tires, rubber seals, rubber shoe soles, etc., to assess the aging degree and resistance to yellowing of rubber materials.
- Coatings and Coatings: Used to test the resistance to yellowing of various coatings and paint coatings under light conditions, ensuring the appearance quality and service life of the coatings.
- Textiles: Especially light-colored or white textiles, to test their resistance to yellowing under light and humid conditions.
Design
- Compact structure: The overall design is compact, with a small footprint, suitable for installation and use in various laboratory environments. At the same time, the reasonable internal structure layout makes full use of the working space, allowing for the placement of a large number of samples for testing.
- Good protective performance: The shell of the test chamber is made of high-quality stainless steel material, which has good corrosion resistance and sealing performance, effectively preventing ultraviolet leakage and dust entry, protecting the safety of operators and the normal operation of the equipment.
- Reasonable ventilation and heat dissipation design: Equipped with an efficient ventilation and heat dissipation system, it can promptly remove the heat and moisture generated during the testing process, ensuring the stability of the temperature and humidity inside the equipment. At the same time, the design of the ventilation ports also fully considers the prevention of ultraviolet leakage, ensuring the safety of the operating environment.
Box structure:
The test chamber consists of the following systems:
1. Main box body;
2. Heating system;
3. Air conditioning system;
4. Electrical control and measurement system;
5. Safety protection device.
