First, the advantages of liquid silicone

Advantage:

Non-toxic to human body, odorless and tasteless;

Good transparency and sterilizable;

performance

Good touch, elasticity and anti-aging performance;

Good high temperature resistance and thermal stability (continuous working temperature up to 180 ° C);

Good low temperature performance (still flexible at -50 ° C);

Excellent electrical insulation, no harmful substances will be generated when burning

Third, the comparison of mobile phone soft rubber sheath-TPU and liquid silicone

Silicone sheath

    Advantages: non-toxic to the human body, good cushioning performance, high abrasion resistance, oil resistance, water resistance, good flexibility, comprehensive protection, will not turn yellow.

It can be applied to two-color rubber molds and can be used to make waterproof sheaths.

    Inadequate: slightly poorer fit to the body

TPU sheath

    Advantages: high abrasion resistance, high strength, outstanding cold resistance, oil resistance, water resistance, mold resistance, good flexibility

    Inadequate: easy to deform easily yellow

Fourth, the application case of liquid silicone in mobile phone waterproof

The innovative application of liquid silicone in mobile phone waterproof structural parts solves the problem of water ingress into mobile phones. Metal + silicone, plastic + silicone, glass + silicone and other secondary injection molding methods will become the new trend of mobile phone waterproof.
Advantages of two-color silicone injection waterproofing compared to traditional mobile phone waterproof:

Traditional mobile phone waterproofing, such as glue bonding, ultrasonic welding, etc., requires manual operation in the middle, its assembly accuracy and stability cannot be guaranteed, it is easy to damage during disassembly, and its waterproof effect is poor.

The liquid silicone injection molding waterproof structure is simplified, the overall structure is compact, the assembly accuracy and repeatability are high, the waterproof effect is improved, and the waterproof level is above level 5.

Liiuid silicone injection molding and secondary molding of metal, plastic and other materials have high bonding strength, which can be disassembled and reinstalled repeatedly, easy to replace and stable in waterproof performance.