Sample requirements for ozone aging test chamber testing




Sample requirements for ozone aging test chamber testing: sample size, sampling, sample quantity

Sample size: The sample should have sufficient size to meet the evaluation of the exposed surface after the test and the comparison of different samples. Priority should be given to using samples that are 10mm long and 25mm wide (note: the sample size should be selected according to the inner diameter of the equipment). Due to the fact that the ozone aging test chamber is divided into static and dynamic sample racks, the static one is to stretch the tested sample and fix it directly on the top and bottom for aging testing, while the dynamic ozone aging test chamber is to conduct experiments while stretching through a transmission device during the experimental process The above two factors should be taken into account before selecting the experiment

Sampling: According to HG/T 3050.1, the sample should be cut at least 50mm away from the edge of the coated fabric, and the sample should represent the entire batch of goods paid as much as possible Samples can be calculated based on their volume size and the number of turntables. Ozone chambers are mainly divided into two types: turntables and trays
Sample quantity: Take three samples from each direction of each coated surface of the fabric. The standard ozone aging test chamber has 6 turntables, and the larger ones have 12. Customization can also be made according to customer requirements. If the product is relatively large, a partition type can be used, and the rubber parts can be directly placed on top for aging testing.

Attachment: Small Knowledge - Time Interval Before Experiment:
Unless otherwise specified due to technical reasons, the following time interval requirements should be followed:
For non product testing, the shortest time between manufacturing and the start of testing should be 16 hours, and the longest time from manufacturing to testing should be four weeks.
For product testing, the minimum time between manufacturing and the start of testing should be 120 hours, during which the sample should be stored at standard laboratory temperature. The maximum time between manufacturing and the start of testing should be three months, and the maximum time interval between receiving the product in the laboratory and the start of testing should be two months.
The ozone aging test chamber should conduct identification tests intended for comparison at the same time intervals and at the same temperature as much as possible.





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