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Ensinger PEI

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Momentive Performance Materials Silopren LSR 2730 TP 3823 Liquid Silicone Rubber
Categories: Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)

Material Notes: Silopren LSR 2730 TP 3823 liquid silicone rubber for injection molding offers Primerless adhesion to a wide range of substrates including metals and engineering plastics, but without adhesion to the mold. Full bond strength is reached after a short post cure (e.g. 1h at 100°C) or by longer storage at room temperature. This makes Silopren LSR 2730 TP 3823 liquid silicone rubber a good option to consider for cost-efficient manufacturing of high part quantities in integrated processes such as multi-component injection molding or insert-molding.

Features: Primerless adhesion to many substrates No special mold treatment needed (final adhesion builds up with time). High temperature stability. Excellent stability and flexibility at low temperatures. Very good ageing behavior and weathering resistance. Good dielectric and mechanical properties. Easy to pigment with LSR color-pastes.

Applications: Silopren LSR 2730 TP 3823 liquid silicone rubber is an excellent candidate to consider for the manufacturing of parts where engineering plastics and elastomeric materials need to be combined in an over-molding process, such as sealing elements, membranes, vibration-dampening elements, spatula or other hard-soft combinations.

Information provided by Momentive Performance Materials.

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Physical PropertiesOriginal ValueComments
Density 1.10 g/ccDIN 53 479 A
Viscosity 400000 cPUncured. B-component.; DIN 53018
 490000 cPUncured. A-component.; DIN 53018
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 302 mm sheets; DIN 53 505
Tensile Strength 8.50 MPa2 mm sheets; DIN 53 504 S2
Elongation at Break 750 %2 mm sheets; DIN 53 504 S2
Tear Strength 13.3 kg(f)/cm2 mm sheets; ASTM D 624
 
Processing PropertiesOriginal ValueComments
Processing Temperature 175 °C
@Time 601 sec
Vulcanization as Tested
Pot Life 4320 min
@Temperature 20.0 °C
Closed vessel
 
Descriptive Properties
AppearanceTranslucentA-component
 TranslucentB-component
Mix Ratio1:1 A:BAs Tested

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PMOMEN9981 / 265796

Proto3000 – 3D Engineering Solutions

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