- Silastic P1 Kit (4131 Base & Cure)
Silastic P1 RTV 4131 is an addition cure silicone, the same as Silastic S accept for the coloured curing agent, Silastic P1 has a clear curing agent. Silastic P1 is primary for silicone pad printing. It can be coloured with pigments and softened by adding fluid (for further information please see the technical data sheet).
Silastic P1 is a high strength silicone mouldmaking rubber with very low shrinkage and high tear resistance, so is also ideal for detailed reproduction of surfaces and objects for prototype design and production tooling, as well as artistic and renovation applications.
A range of materials can be cast into the cured silicone mould including plaster, Jesmonite, concrete, polyurethane, polyester and other reactive resins.
Silastic P1 comes in a kit form with the Base and Curing Agent (catalyst).
Features & Benefits
• Mix Ratio: Base to Curing Agent = 100 to 10 by weight
• Outstanding release properties
• If required the product cure can be heat accelerated
• Fast thick section cure at room temperature
• Medium hardness
• High inhibition resistance
• High tear resistance
• Very high elasticity, for easy removal of complex replica parts
• Very low shrinkage and good dimensional stability
• Can be used for high temperature casting applications
• Can be made thixotropic (non-flowable) for vertical surface replication
• Fast RTV cure, very fast cure with even, low heat
• Very low viscosity for easy mixing and de-airing
• Fast, RTV cure
• Low durometer hardness
Mixed Viscosity: 13,500 mPa.s
Working Time: 40-60 Minutes
Curing Time: 7 Hours
Hardness: 25 Shore A
Tensile Strength: 7.5 MPa
Elongation at break: 850%
Tear Strength: 23 kN/m
Relative Density: 1.12
Linear Shrinkage: < 0.1%
Please Note: All addition cured silicone elastomers are susceptible to cure inhibition when in contact with certain materials and chemicals. Inhibition has occurred if the elastomer is only partially cured after 24 hours, or has a sticky surface in contact with another material. Amines and sulphur containing materials are strong inhibitors, as are organo tin salts used in condensation cure silicone elastomers. Wet or moist surfaces can cause gas bubbles to be formed during cure in the silicone adjacent to the substrate surface. It is strongly recommended that mixing containers, molds, tools and additives be checked for any inhibition effect before use.