This article is provided by Jinan Saicheng Electronic Technology***.
The screen of the mobile phone is easy to break and damaged. Mobile phone tempered film is a kind of mobile phone protective film commonly used in the market now, with a very thin thickness, which can fully cover the mobile phone, prevent the mobile phone from being damaged by external forces, and strongly improve the impact resistance of the mobile phone. So let's introduce to you what are the physical properties testing instruments for mobile phone tempered film.
Mobile phone tempered film water vapor transmittance tester: detect moisture permeability
Test principle: The test principle of the weighing method of the breathable cup is adopted, 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 in the weight of the breathable cup with time.
Mobile phone tempered film differential pressure method gas permeability meter: detect oxygen permeability
Test principle: The instrument adopts the differential pressure test principle, and the pre-treated sample is placed between the upper and lower test chambers and clamped. The low-pressure chamber (lower chamber) is first vacuumed, and then the entire system is evacuatedWhen 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 formed on both sides of the sampleIn 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.
Mobile phone tempered film friction coefficient meter: detect the friction coefficient
Mobile phone tempered film electronic peel testing machine: detect the peeling force of tempered film
Mobile phone tempered film thickness gauge: detect the thickness of the tempered film
The mechanical contact measurement method is adopted, which strictly meets the requirements of the standard, which effectively ensures the standardization and accuracy of the test. Professional is suitable for accurate measurement of the thickness of mobile phone tempered film within the range of range.
Mobile phone tempered film dart impact tester: to detect the impact resistance of the tempered film
Test principle: At the beginning of the test, the test method is first selected, an initial mass and δm value are estimated, and the test is carried out, and if the first sample is damaged, the weight δm is used to reduce the falling massIf the first specimen does not break, the weight δm must be used to increase the mass of the falling body and the test shall be carried out accordingly. In summary, the use of weights to reduce or increase the mass of a falling body depends on whether the previous specimen is broken. After 20 sample tests, calculate the total number of breakages n, if n is equal to 10, the test is completed;If n is less than 10, after supplementing the sample, continue the test until n is equal to 10;If n is greater than 10, after replenishing the sample, the test is continued until the total number of unbroken samples is equal to 10, and finally the impact result is automatically calculated by the system.