Ventilation aging test chamber technical requirements Ventilation aging test chamber used in rubber products, electrical insulation materials, electronic parts, plastic products, heat resistance test, test can be measured after the aging of the sample in the ventilation aging test chamber The test data is compared with the unaged sample to evaluate the weatherability of the material. First, the air conditioning aging test box should pay attention to the following requirements. 1, the appearance of the coating should be uniform color, smooth, no blistering, exposed or scratches 2, should have temperature adjustment, instructions, records and other equipment or devices 3, heating device shall not constitute direct radiation to the test sample 4, there should be a sample rack to place or hang the sample, the sample rack should have a certain degree of mechanical strength and easy handling in high temperature conditions 5, the door has a sealing strip with strong anti-aging properties, and should be easy to replace. Second, ventilation aging test box meets the requirements: 1. There must be a temperature control device to ensure that the temperature of the sample is within the tolerance of the specified test temperature 2. The size of the test chamber should be such that the total volume of the sample does not exceed 10% of the effective volume of the aging chamber, the distance between the suspended specimens is at least 10mm, and the distance between the specimen and the aging chamber wall is at least 50mm. 3, the heating chamber has a temperature measuring device to record the actual heating temperature 4. There is a forced air circulation device inside the box. The air velocity is 0.5m/s-1.5m/s. The minimum surface area of ​​the sample is directly opposite to the airflow to avoid disturbing the air flow rate. 5. Copper or copper alloys must not be used in the heating chamber structure 6. The age of the air in the aging tank is three to ten times per hour 7. Before the air enters the aging tank, it should be heated to within the tolerance of the test temperature specified by the aging tank. Acrylic Four In A Row Game,Lucite 4 In A Row Game,Acrylic Game Board,Lucite Game Set New Bolly Display , https://www.newbolly-display.com