The aging test box is used by the manufacturer to implement various processes related to the actual conditions of use, and the conditions are used to enhance the test. The test is mainly aimed at plastic materials. The common aging conditions are light aging, hygrothermal aging, and aging. Hot air aging.
The following and Haida Xiaobian together to understand the requirements of the aging test box, turntable aging test box to pay attention to matters:
1. The sample should rotate around the center of the irradiation source to ensure uniform irradiance. Sample racks should be filled with samples or substitutes to ensure uniform temperature distribution.
2. The test device uses a long-arc xenon lamp as a radiation source and is equipped with an appropriate correction filter so that its spectral characteristics are close to natural light.
3, the test device must be able to measure, control irradiance; blackboard temperature; spray; operating procedures.
4. The irradiance variation of the entire specimen surface should not exceed ±10%.
5. Periodically clean the neon lamp filter with detergent and water, and periodically replace the neon lamp according to the service life of the neon lamp.
6, the blackboard temperature indicator is 63 ± 5 °C, the blackboard thermometer should be installed on the sample rack, should choose the light irradiation to produce the hottest temperature.
7. In the pure light phase, the temperature in the irradiation chamber should be controlled by a sufficient amount of circulating air to maintain a constant blackboard temperature. The relative humidity in the pure lighting stage should be 50±5%.