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泡綿是什么材質？有哪些分類？
日期：2021-09-09 瀏覽： 2,547
Foam material is a polymer with many small cells filled with gas. Foam has the characteristics of light weight, elasticity, quick pressure-sensitive fixation, and free bending. Extensive evaluation of mobile phones, LCD and other backlights, monitors, notebook computers, automobiles and other fields.
Foam is divided into the following types according to different materials:
1. PU foam
PU is polyurethane. Polyurethane is an emerging organic polymer material. It is highly regarded as the “fifth largest plastic” and has been widely evaluated by the national economy for its excellent performance. PU foam cotton can provide rigid support for design gaps and ensure the physical position of related devices. , providing designers with convenient and flexible structural auxiliary materials. At the same time, it can provide protection in the transportation packaging of sensitive and vulnerable components to prevent the components from being damaged by pressure.
PU foam materials have excellent resistance to compression set, ensuring long-term stability in filling, adsorption and sealing applications. Maintains imperfections and efficacy even after long-term exposure to changing temperatures. Ideal for those who may want to deal with extreme environments. Audience applications include heat, vibration, surprise, regret, and shock.
Foam is divided into the following types according to different materials:
1. PU foam
PU is polyurethane. Polyurethane is an emerging organic polymer material. It is highly regarded as the “fifth largest plastic” and has been widely evaluated by the national economy for its excellent performance. PU foam cotton can provide rigid support for design gaps and ensure the physical position of related devices. , providing designers with convenient and flexible structural auxiliary materials. At the same time, it can provide protection in the transportation packaging of sensitive and vulnerable components to prevent the components from being damaged by pressure.
PU foam materials have excellent resistance to compression set, ensuring long-term stability in filling, adsorption and sealing applications. Maintains imperfections and efficacy even after long-term exposure to changing temperatures. Ideal for those who may want to deal with extreme environments. Audience applications include heat, vibration, surprise, regret, and shock.
2. Conductive foam
The conductive foam wraps the conductive cloth on the flame retardant sponge. After a series of treatments, it has good surface conductivity and can be easily fixed on the device that needs to be shielded with adhesive tape. Shielding materials are available with different cross-sectional shapes, installation methods, UL ratings and shielding effectiveness.
3. Microporous polyurethane foam
Microporous polyurethane foam is a high-tech foam with excellent compressibility, high resilience, moisture resistance and chemical resistance. This foam is divided into K series and E series. And it can fully meet various environmental requirements for sealing and energy absorption. Pressure-sensitive adhesive can be applied to one side according to needs, eliminating the need for back-adhesive work and having a high cost performance. PET-FLLM or paper is used as the supporting surface to ensure the flatness of the foam, and is suitable for various die-cutting processes.
4. Aluminum foil foam
Aluminum foil foam uses aluminum foil cloth composed of soft pure aluminum foil and glass fiber instead of conductive cloth to wrap flame-retardant foam. The surface impedance is ≤0.016Ω, it has excellent shielding properties of metal, its temperature resistance can reach 130℃, and its low cost can meet the needs of product cost pressure. Aluminum foil cloth conductive foam has excellent performance, with shielding performance exceeding 100db and high elasticity, reducing the conductivity and corrosion resistance of the contact surface, and improving the compatibility of the metal plating of connector assembly.
The conductive foam wraps the conductive cloth on the flame retardant sponge. After a series of treatments, it has good surface conductivity and can be easily fixed on the device that needs to be shielded with adhesive tape. Shielding materials are available with different cross-sectional shapes, installation methods, UL ratings and shielding effectiveness.
3. Microporous polyurethane foam
Microporous polyurethane foam is a high-tech foam with excellent compressibility, high resilience, moisture resistance and chemical resistance. This foam is divided into K series and E series. And it can fully meet various environmental requirements for sealing and energy absorption. Pressure-sensitive adhesive can be applied to one side according to needs, eliminating the need for back-adhesive work and having a high cost performance. PET-FLLM or paper is used as the supporting surface to ensure the flatness of the foam, and is suitable for various die-cutting processes.
4. Aluminum foil foam
Aluminum foil foam uses aluminum foil cloth composed of soft pure aluminum foil and glass fiber instead of conductive cloth to wrap flame-retardant foam. The surface impedance is ≤0.016Ω, it has excellent shielding properties of metal, its temperature resistance can reach 130℃, and its low cost can meet the needs of product cost pressure. Aluminum foil cloth conductive foam has excellent performance, with shielding performance exceeding 100db and high elasticity, reducing the conductivity and corrosion resistance of the contact surface, and improving the compatibility of the metal plating of connector assembly.
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