Detailed parameters of rubber ozone aging chamber

The rubber ozone aging chamber can be used for rubber products such as vulcanized rubber, thermoplastic rubber, cable edge sheaths, etc. Under static tensile deformation, the sample is exposed to air with a constant ozone concentration and a constant temperature test chamber in a closed and unlit environment. The degree of cracking or other performance changes on the surface of the sample is measured at a predetermined time to evaluate the rubber's resistance to ozone aging.

Requirements for rubber ozone aging chamber ozone sample holder:

1. Composed of several major components including the casing, electronic components, and ozone generator

2. Fix the two ends of the sample with a fixture under the required elongation, and when in contact with ozone air, the length direction of the sample should be basically parallel to the direction of the airflow

3. The fixture should be made of materials that are not easily decomposed by ozone, such as aluminum.

4. Rotate the sample at a speed between (20 ^ -25) mm/s, and move each sample continuously along the same path in a plane perpendicular to the dry airflow

5. The time for the same sample to rotate once is (8 ^ -12) minutes. The scanning area of the sample (shaded area in Figure 2) is less than 40% of the effective area of the test chamber

6. The preparation of the sample shall comply with the provisions of GB/T 9865.1. The sample should be cut from the newly molded test piece, and if necessary, it can be cut from the finished product. Sample shortage

7. Use 3 fewer samples for each experimental condition.

8. The width of the long standard specimen shall not be less than 10mm, and the thickness shall be 2.0mm ± 0.2mm. The length of the specimen between the two ends of the fixture before stretching shall not be less than 40mm