The important parameters of silicone protective film are thickness and viscosity. Viscosity usually refers to the quality and amount of glue added to the material. The quality and quantity of glue control affects the viscosity of the entire product. So, here comes the question, how do we detect the viscosity of the silicone protective film? The following coating online reveals the answer for everyone.
How to test the viscosity of silicone PET protective film?
The first thing is to use a tensile machine to test the environmental standards. Temperature: 23℃±2℃; Humidity: 65RH180°; Peel strength, test steel plate: SUS304; Peel speed 300mm/min; Fixture start distance 100mm. These parameters are expected to be well grasped by us. If these results are tested, it proves that the PET protective film can be used normally.
How to solve the high viscosity of silicone PET protective film?
When it comes to the viscosity of the silicone PET protective film, the industry’s PET protective film is made of acrylic pressure-sensitive adhesive (most of the silica gel is used for the PET protective film). The viscosity of the protective film depends on the ratio of the original glue and the amount of glue. The adhesive-sensitive protective film exhibits high stickiness during application. In addition to the high stickiness of the protective film itself, it is also directly related to the sticking, storage pressure and temperature.
The viscosity of the silicone PET protective film is currently determined mainly by the thickness of the silicone. A high viscosity means a high thickness. When the weather is hot, the silicone will expand and contract with heat, and when it is attached to the screen of the mobile phone, it will be the same as sweating-occupational abbreviation Overflow of glue, so the viscosity should not be too high, otherwise it will be difficult to remove the protective film during use. Proper viscosity can ensure product flatness, high scratch resistance, and high definition.
As we all know, pressure-sensitive adhesives are only sensitive to pressure. We can properly adjust the storage pressure after being pasted or pasted; if the protective film itself is highly viscous, consider using it after the weather turns cooler (used below 20 degrees, you can noticeably feel the stickiness) Relatively reduced force).
This article gives you a detailed introduction to the specific operation method of detecting the viscosity of the silicone protective film, and I hope it can help you.