How to understand TPU film
The methods to identify TPU film mainly include observing appearance characteristics, testing physical properties and chemical properties, etc. The following is a detailed introduction on how to identify TPU film.
TPU film is a film 糖心视频 made of thermoplastic polyurethane resin. It has excellent flexibility, elasticity, wear resistance and chemical resistance, and is widely used in many fields. In order to correctly identify the TPU film, we can observe and detect it from the following aspects.
1. Observe the appearance characteristics
Color: TPU film comes in various colors, the common ones are transparent, white, black and colored. Different colors usually represent different application areas and special requirements.
Glossiness: TPU film has a certain glossiness, which can be judged by observing the reflected light on the film surface. Normally, TPU film has a higher gloss.
Thickness: The thickness of the TPU film can be directly detected by measuring instruments, or it can be initially judged by comparing the feel of different films. Generally speaking, the thickness of TPU film ranges from tens to hundreds of microns.
Texture: The surface of TPU film often has a certain texture, which can be judged by observing and touching the film surface. The shape and arrangement of grains vary according to different production processes and uses.
2. Test physical properties
Strength test: Use a mechanical tester to conduct strength tests on the TPU film, including tensile strength, elongation at break, tear strength, etc. TPU films generally have high tensile strength and elongation at break, as well as good tear strength.
Elastic recovery performance: After the TPU film is deformed by bending, folding, etc., observe whether it can quickly return to its original shape to evaluate its elastic recovery performance. TPU film has excellent elastic recovery properties and can quickly return to its original state after deformation.
Wear resistance test: Use a wear tester to conduct a wear resistance test on the TPU film to simulate wear conditions in actual use. TPU film usually has good wear resistance and can withstand long-term friction without being easy to wear.
Transparency test: Use a light transmittance meter or light transmittance tester to conduct a transparency test on the TPU film to determine its transparency. TPU film usually has high transparency, which can reach more than 90%.
3. Detection of chemical properties
Chemical resistance: Place the TPU film in some common chemical solutions and observe whether it changes. TPU films usually have good chemical resistance and can resist the erosion of chemicals such as acids and alkalis within a certain range.
Thermal stability test: Place the TPU film in a high temperature environment to observe its thermal stability performance. TPU films usually have good high temperature resistance and can maintain stable performance within a certain temperature range.
Identifying TPU films mainly starts from observing appearance characteristics, testing physical properties and chemical properties. TPU can be accurately identified by observing characteristics such as color, gloss, thickness, and texture of the film, as well as by detecting physical properties such as strength, elastic recovery properties, abrasion resistance, and transparency, as well as chemical properties such as chemical resistance and thermal stability. Membrane quality and performance. These judgment methods can help users choose the appropriate TPU film and ensure its good performance and reliability in practical applications.
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