This article is provided by Jinan Saicheng Electronic Technology***.
The main function of a display protector is to protect the screen from direct contact with dust, fingerprints, and other contaminants, thereby reducing the risk of screen damage and wear and tear. If the protective film has poor air permeability, dust and pollutants are easy to be trapped between the protective film and the screen, resulting in problems such as blurry and unclear screens. Therefore, it is very important to check the breathability of the protective film of the display.
The display protective film differential pressure differential gas permeability meter is a testing equipment commonly used to detect the air permeability of the display protective film.
Based on the test principle of the differential pressure method, the differential pressure pressure permeability tester of the display protective film is a professional gas permeability tester for the protective film of the display screen, which is suitable for the determination of the gas permeability and gas permeability coefficient of the protective film of the display screen at various temperatures.
The working principle of the display protective film differential pressure method gas permeation meter
The instrument adopts the principle of differential pressure test, and the pre-treated specimen is placed between the upper and lower test chambers and clamped. First, the low-pressure chamber (lower chamber) is vacuumed, and then the entire system is evacuated; When the specified vacuum degree is reached, the lower chamber of the test is closed, and the high-pressure chamber (upper chamber) is filled with a certain pressure of test gas, and a constant pressure difference (adjustable) is ensured on both sides of the sample; In this way, the gas will penetrate from the high-pressure side to the low-pressure side under the action of the differential pressure gradient, and the internal pressure of the low-pressure side will be monitored and processed to obtain the various barrier parameters of the tested sample.
Display Protective Film Differential Pressure Method Gas Permeameter Application
Quality control of display protective film: Display protective film manufacturers can use differential pressure method gas permeability meter to carry out quality control of protective film in the production process. By measuring the gas permeability of the protective film, it can be judged whether its quality meets the requirements, so as to adjust the production process in time and improve the product quality.
R&D and improvement of display protective film: Differential pressure gas permeation meter can be used for the development and improvement of display protective film. By testing the gas permeability of protective films of different materials, processes and structures, it is possible to screen out the protective film materials with better performance, and optimize the production process to improve the air permeability and use effect of the products.
Product reliability evaluation: In the application process of display protection film, its air permeability has an important impact on the reliability and service life of the product. The differential pressure gas permeability meter can carry out long-term gas permeation test on the protective film to evaluate its stability in different environments and conditions, and provide an important basis for product reliability evaluation.
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