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Product Features And Benefits:
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PolyArt™ is a very fast setting, translucent high strength, two component, tin catalyzed, room temperature cured silicone rubber. A versatile medium for both highly detailed, permanent molds and realistic feeling LifeCast™ artifacts.
As a professional medium PolyArt™ silicone is ideal for many uses. Its 'Health Care' grade means it is safe for exterior use and handeling when properly and fully cured.
PolyArt™ is not intended for beginners and not for use by children.
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- •, Excellent for use with Earthium(f/x)™
- •, Translucent - easily pigmented which makes it ideal for robotic or animitronic skins, special effects and props for theme parks, adult novelties and the film industry.
- •, 10 Shore A - Soft skin-like feel; excellent photogenic qualities
- •, High Elongation and Tear Strength
- •, Low Linear shrinkage
- •, Excellent long term retention of rubber properties under dynamic use conditions
- •, A material Safety Data Sheet is available by clicking the MSDS tab to the right.
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Material Properties:
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- TYPICAL PROPERTIES AS SUPPLIED:
- Part A - Base Component
- •, Color: Translucent
- •, Consistency: Pourable
- •, Viscosity, cP.(mPa.s): 60,000
- Part B - Catalyst Component
- •, Color: Clear
- •, Viscosity, cP.(mPa.s): 90
- SHELF LIFE:
Six (6) months from date of shipment when stored at 24°C (75°F) in original unopened containers.
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- TYPICAL CATALYZED WORKING PROPERTIES:
- •, Fast Set Mix Ratio,A:B (by weight %): 85:15
- •, Fast Set Working Time: 15 minutes
- •, Slower Mix Ratio,A:B (by weight %): 90:10
- •, Slow Set Working Time: 25 minutes
- •, Demold Time, hours at 65 (F): 1.25
- •, Handeling Time, hours at 65 (F): 24
- •, Full Cure Time at 65 (F) 3 - 5 days
- Mixing and curing times are at Room Temperature 65 degrees (F). Cold materials have improved working characteristics and set slower. Warmer materials cure faster.
- TYPICAL PROPERTIES OF CURED SILICONE RUBBER:
- Cured 5 days at 24°C (75°F) and 50% RH
- •, Color: Translucent
- •, Specific Gravity: 1.1
- •, Hardness (Shore A): 10
- •, Tensile Strength, psi (N/mm2): 475
- •, Elongation (%) 550
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Materials Included:
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Printed Instructions: These instructions are designed as a guide to using the materials for lifecasting or general mold making. Since we cannot control actual use we will not be held responsible in any way for incident or consequent damages from incorrect or experimental application.
BlendBag™: These are specifically made for lifecasting and are extruded from polyethelene which will not react adversly with silicone under normal conditions. The markings are for approximating liquid or powder volumes but are not sufficiently accurate for final PolyArt™ catalyst proportioning which must be done by weight.
Spout & Glan Set: The 38mm glan (bottom ring with threads) and matching, threaded Yorker Spout with Cap are used to turn the BlendBag™ into a dispensing container. This minimizes risk of spillage and air bubbles when used as illustrated below.
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 PolyArt™ Silicone: Is a 2 componant system.
•, Part A: The base is a milky, translucent, thick liquid with a specific gravity of 1.1 (8.8 ounces per cup under normal conditions). Refrigeration prior to use improves flow and workability characteristics. Clean up residual material with appropriate solvent like alcohol, paint thinner or mineral spirits with good area ventilation and no open ignition sources present.
•, Part B: Is an organometallic tin catalyst which act to turn the base from a pourable liquid to a flexible solid of 'Shore 10' hardness (a relatively soft, flesh-like feel). Liquid & fumes can be irritating to skin and eyes so use appropriate precautions. Typically used in a ratio of 10% by weight of the Part A being used but may use up to 15% to speed initial gellation and cure.
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- Packages Sizes By Item Number:
- #1180 Quart: 2 pounds Part A in 1 BlendBag™ / 0.2 pound Part B (10%) in plastic squeeze bottle. Other items shown.
- #1181 Gallon: 8 pounds Part A in 1 BlendBag™ / 0.8 pound Part B (10%) in plastic squeeze bottle.Other items shown.
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- White Space:
- Flesh Tone Tints: Available in 2 tones which may be mixed. Supplied in 10cc syringes which will tint up to 1 gallon Part A
- #1185 Nordic: 10cc syringe for easy dispensing
- #1186 Medit.: 10cc syringe for easy dispensing
- #1187 African: 10cc syringe for easy dispensing
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Preparation of PolyArt™ Silicone: Method 1
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 1. Pour the amount of silicone base (Part A) into the BlendBag™ as required for your project.
- •, The printed lines are a guide to volume but always use weight for final measurement.
- •, The LifeCast™ Library has more BlendBag™ info.
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 2. Add the PolyArt™ flesh tone tint if needed. Our tints are concentrated so use small amounts.
- •, Blend per Step 3.
- •, Examine for color opacity & intensity.
- •, Add more tint until the color qualities you want are satisfied.
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 3. Purge the air, pinch the bag shut 4-5 inches from the end & blend.
- •, Keep the top few inches of the bag clean on the inside for the next step.
- •, Repeat steps 2 and 3 until the working qualities are what you want.
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 4. Thread the top 3-4 inches of the bag through the bottom part of the cap. Arrange evenly around the inside & fold over.
- •, Attach the spout cap to ensure it fits then remove it.
- •, Let sit for15-30 minutes to allow bubbles to float up & pop.
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 5. Weigh the bag & add Part B by %.
- •, 10% Part B is the minimum.
- •, 15% sets much faster.
- •, Part B is clear. Color for illustration purposes only.
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 6. Do the next 2 steps quickly.
- •, Reattach the cap. Since this was done in step 4 it should go on easily this time.
- •, Cap should be firm but twisting too tight will 'pop' the threads loose.
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 7. With the cap open "burp" all the air from the bag.
- •, The idea is to create as much of a vacume chamber as possible before blending.
- •, Don't let the pool of catalyst sit in one spot for more than 2-3 minutes.
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- 8. Close the cap firmly.
- •, Again blend the fluids thoroughly.
- •, Be sure to get into all the corners so no pockets are left unmixed.
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 9. Hang the bag upside down for 5-10 minutes so bubbles will float up away from the tip.
- •, Open and pour
- •, Remember the issues of air traps & how to avoid them.
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Preparation of PolyArt™ Silicone: Method 2
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- PROCESSING INFORMATION:
- 1. Stir the base (Part A) well before use (except when machine dispensing).
- 2. Shake the catalyst container (Part B) well before use.
- 3. Weigh the desired amount of base into a clean mixing container. Tip the container and roll the base all the way around the side wall up to two inches from the top. This will prevent the catalyst from becoming absorbed into the container. It is recommended that the container be filled to not more than 1/3 the container depth to allow sufficient room for expansion during the deaeration procedure.
- 4. Weigh the proper amount of catalyst into the container. Mix the base and catalyst together by stirring with a stiff, flat ended metal spatula (aluminum not recommended) until a uniform color is obtained but no longer than 15 minutes before pouring into the mold. Scrape the container walls and bottom well to insure a thorough mix.
- 5. If complete absence of bubbles is required place the container into a vacuum chamber and evacuate the entrapped air from the mixture using a vacuum pump capable of achieving 29 inches of mercury vacuum. The mixture will rise, crest and then collapse in the container. Interruption (bumping) of the vacuum may be necessary to prevent overflowing the container. Keep the mixture under full vacuum for 2-3 minutes after the material has receded in the container.
- 6. Bleed air slowly into the vacuum chamber. When the chamber is at atmospheric equilibrium, remove the cover plate and take out the container.
- 7. Pour the desired material slowly in a steady stream from one end of the mold box so that the material flows evenly over the pattern. This should minimize entrapment of air bubbles under the flowing material. A “print” coat may be poured first over the pattern which will also help reduce the possibility of entrapping air on the pattern and in the cured rubber. A mold release (petroleum jelly) may be applied on the pattern first to improve release. Not required in ArtFORM™ or Earthium™(f/x) molds.
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- 8. Allow the rubber to cure for at least 1 to 1.5 hours at 70±5°F before removing the cured rubber mold from the pattern. Heat acceleration is not recommended with this product.
- 9. For best results, allow the mold to air cure an additional 24 hours before using it in production. Full cure is achieved in 3-5 days.
- ADDITIONAL INFORMATION:
- •, Catalysed processing properties are affected by temperature & humidity variation
- 1. For best results, mix and cure the material at 65°F and 50% relative humidity.
- 2. Higher temperature and humidity will decrease the work life and pot life of the material. The faster cure will also affect the flow properties. Refrigeration of the base prior to use in hot environments has shown to improve the handling properties of this material.
- 3. Lower temperatures and humidity will increase the work life and pot life of the material. The slower cure will increase the flow time. Cure temperatures below 68°F (20°C) are not recommended and have been found to cause a reduction in final cure hardness and properties.
- 4. It is important that the catalyst containers are tightly closed after use. Catalyst exposed to air for extended periods of time will hydrolyze (cure). An indication of hydrolysis is a film or! crust formation on the surface of the catalyst. The use of hydrolyzed catalyst is not recommended and may cause incomplete cure.
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Instructions: #1180/81
