This article is provided by Jinan Saicheng Electronic Technology***.
Moisture permeability is one of the important indicators to evaluate the performance of protective clothing. Moisture permeability determines the breathability and perspiration of the garment material, which is essential for the comfort and safety of the wearer. Good moisture permeability helps to keep the wearer comfortable and avoid discomfort caused by excessive stuffiness, while also helping to prevent sweat build-up and reduce the likelihood of bacterial growth. Therefore, it is very important to check the moisture permeability of protective clothing.
The water vapor transmission rate tester of protective clothing is a testing equipment commonly used to detect the moisture permeability of protective clothing.
The test principle of the water vapor transmission rate tester of protective clothing:
Using the test principle of the weighing method of the breathable cup, at a certain temperature, a specific humidity difference is formed on both sides of the sample, and the water vapor enters the dry side through the sample in the breathable cup, and the water vapor transmission rate and other parameters of the sample are obtained by measuring the change of the weight of the breathable cup with time.
The water vapor transmission rate tester of protective clothing complies with a number of national and international standards: GB T 1037, GB T 16928, ISO 2528, ASTM E96, ASTM D1653, Tappi T464, DIN 53122-1, JIS Z0208, YBB00092003.
Test operation steps of water vapor transmission rate tester for protective clothing:
9.1.4.1. Place the moisture permeable cup of the encapsulated sample in the test chamber with the cup mouth facing up, and close the chamber door.
9.1.4.2. Set the test conditions such as temperature, humidity, wind speed, weighing interval and mass increment ratio at the end of the test through the software interface, and start the test.
9.1.4.3. The tester first weighs the quality of the breathable cup, which is recorded as the initial mass. After the test chamber reaches the set test environment, the breathable cup is automatically weighed intermittently in the test chamber.
9.1.4.4. After the end of the test, the instrument automatically issues the test results and related curves.
The water vapor permeability tester of protective clothing can not only be used for the moisture permeability testing of protective clothing, but also for the moisture permeability testing of various films, composite films, engineering plastics, and paper and cardboard, which is widely used and can be detected quickly and accurately.
The water vapor transmission rate tester of protective clothing is an important testing instrument to evaluate the quality of protective clothing, and by using this equipment, the product quality of protective clothing can be better ensured, its quality stability can be improved, and comfort can be ensured.