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Special addition liquid silicone rubber for electronic keys MY M7140

Description 

MY M7140 is a two-component, transparent, long-life addition liquid silicone rubber for electronic keys.


Features  

Excellent fluidity, demoulding, good molding and high efficiency;

Excellent mechanical properties and fatigue resistance

Excellent electrical insulation

ROHS certification

 

Applications 

Electronic keys

Keyboard cover

3C product sealing

Other injection molding products

NOTES 

1. MY M7140 is a platinum catalyzed product. The platinum catalyst is in the component A. Strict attention should be paid when using, to avoid catalyst poisoning. 

2. Only components A and B of the same lot number can be mixed together.

3. To ensure optimum fluidity and homogeneity of the material, the material must be thoroughly agitated before being transferred to the container to disperse any sedimentation that may occur during the storage period. 

Technical index:   

Properties

Test Method

Value

uncured

Component A

Viscosity at 23℃, stirred

ISO3219

150mPa.s

Component B

Viscosity at 23℃, stirred

ISO3219

100mPa.s

Product data (A+B mixed)

Viscosity at 23℃, stirred

ISO3219

125mPa.s

Curing time

See curing conditions

Product data (after cured)

(23±2℃, after curing for 24h)

Density 23℃

1.09 g/cm3

Hardness (Shore A)

DIN 53505

40

Tensile Strength

DIN 53504

6.0MPa

Elongation

DIN 53504

320%

Tear Strength

15KN/m

Packaging

Component A: 200 Kg/drum, component B: 200 Kg/drum.


Storage

1. Below 23°C, unopened barrels can be stored for 12 months, and the best use-by date is marked on the label of each product's outer packaging.

2. After the expiry date, it is necessary to do performance tests for relevant indicators to ensure the quality, and then could be used.   



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