According to different test requirements, the ozone aging test box is divided into two methods: dynamic tensile test and static tensile test. The two test methods are introduced below:
1. Static tensile test:
Generally, the two ends of the sample are clamped on a specific fixture, and an elongation stretch is selected. The fixture is installed on a rotating sample holder. The rotation speed of the sample holder can be set according to the test requirements. Within a certain temperature and relative humidity, the specified The test was conducted under the ozone concentration. After a specified period of time to check the cracking of the sample, you can purchase equipment with different high and low concentrations according to the test concentration.
2. Dynamic tensile test:
Generally, the sample fixture can be automatically stretched to stretch and reset the sample.The stretching frequency is 0.5 ± 0.025Hz.Clamp the two ends of the sample on a special fixture to make the sample from the elongation rate of 0 to the maximum elongation rate. Cyclic stretching, the fixture is installed on the rotating sample rack, the sample rack speed can be adjusted according to the test requirements, the temperature can also be set according to the actual situation, the relative humidity is not more than 65%, under a certain ozone concentration, the fixture is cyclically stretched And reset and rotate with the sample holder to test. Check the sample for cracks after a specified period of time.
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