Polyurethane foam in mobile phone buffer application

Polyurethane foam in mobile phone buffer application

 

Polyurethane foam is a high molecular polymer with many small cells, the solid phase is a polymer matrix, the small cells are filled with other gases, the foaming ratio is low, and the density is high. As a mobile phone accessory, it is used as a shock-proof pad in a mobile phone: shock absorption, buffering and decompression for the place where the electronic components are in contact with the casing; prevent the electronic components from being crushed.

 

The commonly used range of polyurethane foam in mobile phones

① LCD foam ② Camera foam ③ Speaker foam ④ Speaker cavity sealing foam ⑤ Motor foam ⑥ Connector compression foam

Main features

• Has excellent sealing to avoid gas release and atomization.

• Resistance to compression deformation, ie the elasticity is durable, which ensures long-term shock protection of accessories.

• It is flame retardant, does not contain harmful substances, does not leave residues, does not pollute equipment, and is not corrosive to metals.

• Can be used in a variety of temperature ranges. It can be used from minus 40 degrees Celsius to 90 degrees.

• The surface has excellent wettability, easy to bond, easy to manufacture and easy to punch.

• Engineered polyurethane formulations offer a broad modulus range for additional design flexibility

 

Polyurethane foam is also widely used in new energy vehicles, electronic equipment and cushioning for aerospace and rail vehicle interiors. Polyurethane foam has many outstanding properties, such as flame retardant, wear resistance, heat resistance, cold resistance, cushioning, sound absorption, shock resistance, sealing, such as excellent compression deformation resistance, ultra-high resilience, impact resistance, elastic durability, etc. . It is widely used in various precision products such as shockproof.

 

Conductive foam function and material selection

Function: Connect the hardware decorative parts to the main board to prevent static electricity from burning the main board. The conductive cloth has the same function as the conductive foam, but the conductive foam is directly connected to the hardware decorative parts and the host. When using conductive foam, a conductive cloth should be used.