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Master Bond adhesives

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PoolKemie SILIMOLD AL-25 RTV2 silicon moulding rubber
Categories: Polymer; Thermoset; Silicone; Silicone Rubber

Material Notes: Introduction: It is a two component room temperature vulcanizing pour able fluid silicon which cures on the addition of the appropriate CATALYST S o SN, according to the polycondensation process. SILIMOLD AL-25 silicon rubber is characterized by its medium-low hardness and a high tearing resistance. Thanks to these properties, it may also be utilized in the manufacture of moulds with many undercuts.

Application: SILIMOLD AL-25 silicon rubber is ideal in the manufacture of moulds for the production of articles made from synthetic resins (polyester, epoxy polyurethane, etc), plaster, cement, wax etc. It is also suitable for the" wasted wax "process in the artistic casting and founding.

Note 1: Tests have been carried out under these conditions: Temperature: +20°C; After: 24 ore; R.H.: 60%; Catalysis: 100:5

Information provided by Poolkemie

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.22 - 1.28 g/ccBefore Catalysis
Viscosity 27000 - 33000 cPBefore Catalysis
Linear Mold Shrinkage 0.0050 cm/cmafter 5 days ageing, After Catalysis; ISO 4823
Storage Temperature 5.00 - 30.0 °C
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 22 - 28After Catalysis; DIN 53505
Tensile Strength 5.50 - 6.50 MPaAfter Catalysis; DIN 53504 - S A 3
Elongation at Break 470 - 530 %After Catalysis; DIN 53504 - S A 3
Tear Strength 21.5 - 22.5 kN/mAfter Catalysis; ASTM D 624 S A 3
 
Processing PropertiesOriginal ValueComments
Cure Time 24.0 hourDemoulding time, See note 1, During Catalysis
Pot Life 60.0 - 80.0 minSee note 1, During Catalysis
Shelf Life 12.0 MonthBoth components (A and B) in their original tightly closed containers, in a dry and cool place , away from moisture
 
Descriptive Properties
AppearanceFlexible rubberAfter Catalysis
 Thick LiquidBefore Catalysis
ColorLight greyComponent A, Before Catalysis
 Semi bright whiteAfter Catalysis
 TransparentComponent B, Before Catalysis
Mixing ratio100:5by weight, Before Catalysis
Pouring Time60-80 minSee note 1, During Catalysis

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PPOOLK002 / 318481

Rulon Bearings

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