Sample requirements for ozone aging test chamber testing

Sample requirements for ozone aging test chamber testing: sample size, sampling, number of samples

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 with a length of 10mm and a width of 25mm (note: the sample size should be selected according to the inner diameter of the equipment), because the ozone aging test chamber is divided into two types of sample racks: static and dynamic. The static type 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 conducts 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
Number of samples: Three samples are taken from each direction on each coated surface of the fabric. The scale ozone aging test chamber has 6 turntables, with 12 for larger ones. Customization can also be made according to customer requirements. If the product is relatively large, a partition type can be used, and rubber parts can be directly placed on top for aging testing.
Attachment: Small Knowledge - Time Distance Before Experiment:
Unless otherwise specified due to technical reasons, the following time distance 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 around.
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 the temperature of the scale laboratory. The maximum time between manufacturing and the start of testing should be three months, and the maximum time distance 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 distance and temperature as much as possible.

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