What is Silicone foam board What are the types of silicone foam board?

Foam is foamed from different materials and is widely used in mobile phones It is a dust-proof, waterproof, shockproof and sealing material for LCD backlight, display screen, notebook computer, automobile and other fields. A lot of bubbles will form on the foam surface, and there is air in the bubbles to buffer. Foam can be divided into open hole and closed hole according to the opening and closing of the hole wall, and can also be divided into fast rebound and slow rebound according to the rebound speed. For example: Saint Gobain, France Korel Foam belongs to the quick rebound series, and poron Foam belongs to the slow rebound series. Fast rebound series foam can play a very good protective effect on products.

Foam products have a series of excellent characteristics:

1、 Cushioning, sealing, dust prevention, sound insulation and waterproof.

2、 Stable resilience, thin gauge and low deformation rate.

3、 Low resilience loss during long-term work.

4、 The stress ratio is small and the compression ratio is large.

5、 Easy to punch, one side can be back glued（ PET ）。

6、 Adhesive backing can be used according to user requirements.

7、 Low surface contact resistance.

8、 Anticorrosive nickel coating can prevent electrochemical corrosion.

9、 UL Class II fire protection.

ten . Hot pressure resistance ， Not easy to fall off ， High tensile strength.    

eleven 、 Easy to use, flexible, ultra-thin and reliable Etc.

Foam can be divided into the following types according to different materials:

1、 PU Foam (polyurethane)

 pu Foam is made of polyurethane foam.

  two Conductive foam

Conductive foam wrapped with conductive cloth on flame retardant sponge After a series of treatment, it has good surface conductivity and can be easily fixed on the device to be shielded with adhesive tape. There are different section shapes, installation methods UL Shielding materials of grade and shielding effectiveness are available.

Conductive foam can be divided into aluminum foil cloth foam, conductive fiber cloth foam, gold plated cloth foam, carbon plated cloth foam, etc 。

  three Aluminum foil foam

Aluminum foil foam is made of pure soft aluminum foil and glass fiber instead of conductive cloth to wrap flame retardant foam. Surface impedance ≤ 0.016 Ω, with excellent metal shielding performance, and its temperature resistance can reach 130℃ ， The lower cost can meet the demand of product cost pressure. Aluminum foil conductive foam has excellent performance, and its shielding performance exceeds 100db High elasticity, reducing the conductive impedance of the contact surface, corrosion resistance, and improving the compatibility of the metal coating of the connector assembly.

four 、 korel Foam

Korel (Microporous polyurethane foam) is a high-tech foam produced by French Saint Gobain Group, which has excellent compressibility, high resilience, moisture resistance and chemical resistance. This foam is divided into K Series and E Series. And it can fully meet the requirements of a sealed, energy absorption environment. The pressure-sensitive adhesive can be pasted on one side according to the demand, which can eliminate the back glue operation and has a high cost performance PET-FLLM Or paper as the supporting surface to ensure the smoothness of foam, suitable for various die-cutting processing.

Product characteristics: Thin specification, consistency and low deformation; It has excellent buffering, insulation, dustproof, waterproof, shockproof, energy absorption, heat insulation, sound insulation and sealing performance. The resilience is stable, and the resilience loss is small during long-term operation. The stress is small and the compression ratio is large. Easy to punch, single side adhesive backing. Adhesive backing can be provided according to customer requirements.

Korel Main functions of microporous polyurethane foam:

The products are widely used in: mobile phones, sound consoles, electrical enclosures, electronic gaskets, instrument dials, vibration damping, isolation plates LCD window gasket, shock motor buffer ring gasket LED Peripheral gasket, (horn, camera) Cushion 。

five 、 EPDM— EPDM

EPDM is a terpolymer of ethylene, propylene and non conjugated dienes, Commercial production began in 1963. The annual consumption of the world is eighty 10000 tons. EPDM The most important characteristic is its superior oxidation resistance, ozone resistance and erosion resistance. As EPDM belongs to polyolefin family, it has excellent vulcanization characteristics. Of all rubbers, EPDM It has the lowest specific gravity. It can absorb a large amount of filler and oil without affecting the characteristics. Therefore, a rubber compound with low cost can be produced.

six 、 EVA Plastic, resin

EVA Plastics and resins are characterized by good flexibility and rubber like elasticity -50℃ It still has good flexibility, good transparency and surface gloss, good chemical stability, good anti-aging and ozone resistance, and non-toxic. Good compatibility with filler, good coloring and molding processability.

EVA The resin is widely used. Generally, the content of vinyl acetate is Less than 5% EVA ， Its main products are films, wires and cables LDPE Modifiers, adhesives, etc; Vinyl acetate content 5%~10%  Of EVA The product is elastic film, etc; Vinyl acetate content 20~28% Of EVA , mainly used for hot-melt adhesive and coating products; Vinyl acetate content 5%~45% The main products are films (including agricultural films) and sheets, injection molding, molding products, foaming products, hot-melt adhesives, etc.

seven 、 CR Foam

CR Foam is a kind of general purpose special rubber. In addition to the good physical properties of general rubber, it also has excellent properties such as flame resistance, oil resistance, chemical corrosion resistance, etc., which makes it play an important role in various synthetic rubbers.

The above is the introduction of some foam products today. The foam products widely used in the market today are mainly from France Korel foam and poron Foam. Both of them have incomparable advantages in quality and performance compared with other foams. in especial korel Foam is not only of good quality but also of high cost performance. At present, it has been recognized by more and more enterprises and widely used in their products 。

Engaged in silicone foam, silicone foam The production and research and development of silicone sponge and polymer materials can customize personalized product solutions according to customer needs 。 It is because of the leading technology that the products are constantly updated , We have also developed many new products according to the needs of the international market, which have been recognized by the market and new and old customers. At present, the production technology and equipment have reached the leading level in China.

Main products can be divided into: foaming silica gel ( Silicone foam board) series, silicone sponge series, silicone extrusion Sealing strip Series, silicone molding Sealing element Series, silicone die-cutting parts series, high-temperature silicone gasket, etc six Large series of products. It undertakes the supporting production tasks in the fields of aerospace, railway locomotive, automobile industry, home appliance industry, electronics and electrical, energy lighting, food and medical treatment, chemical fiber textile, communication equipment, printing equipment, clothing equipment, etc.