Polycraft Zhermack ZA13 Translucent Addition Cure RTV Silicone Shore A13
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Polycraft Zhermack ZA13 Translucent Addition Cure RTV Silicone Shore A13


Price:  £15.00(Inc. 20% VAT)(£12.50 Exc. VAT)Earn 15 Loyalty Points
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Polycraft Zhermack ZA13 Translucent RTV Silicone - Cured SamplePolycraft Zhermack ZA13 Translucent RTV Silicone - Cured Sample
Small Plastic Mixing Sticks / StirrerSmall Plastic Mixing Sticks / Stirrer
Quick Link Code:  QL3552 Brand:  Polycraft

ZA 13 Mould 45 (13 ShA)

ZA 13 MOULD WT 45 is a bi-component addition cured RTV silicone rubber, particularly recommended for making object in polyester resins and concrete.
Compatible with all plasters, coatings, polyurethane resins, acrylic resins and polyester resins.
Main application sectors

Mould making and model-making due to its considerable precision in reproduction, high dimensional stability and high mechanical resistance
Artistic ceramics due to its high dimensional stability, considerable fluidity and good mechanical resistance
Concrete Moulding due to its considerable precision in reproduction,  high dimensional stability and high mechanical resistance

Chemical and physical characteristics

 

Metric system

USA system

Mixing ratio

1 : 1

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Density

1.07 g/cc

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Viscosity of the mix pre-catalisation

4500 ± 500 cP

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Mixing time at 23 °C (73 °F)

1'

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Working time at 23 °C (73 °F)

40’ - 50’

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Setting time at 23 °C (73 °F)

2 h 30' - 3 h

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Hardness Shore-A after 24 hours

13 ± 2 ShA

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Tensile strength

3.0 ± 0.2 N/mm²

435 ± 30 psi

Elongation at break

450 ± 20%

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Tear resistance (Die B)   

14 ± 1 N/mm

79 ± 6 ppi

Tear resistance (Die C)

9 ± 1 N/mm

51 ± 6 ppi

Inhibition of Cure
Great care must be taken when handling and mixing all addition-cured silicone elastomer systems, that all the mixing tools (vessels and spatulas) are clean and constructed in materials which do not interfere with the curing mechanism, do not use wood and paper mixing utensils. The cure of the rubber can be inhibited by the presence of compounds of nitrogen, sulphur, phosphorus and arsenic; organotin catalysts and PVC stabilisers, epoxy resin catalysts and even contact with materials containing certain of these substances e.g. moulding clays, sulphur vulcanised rubbers, condensation cure silicone rubbers, wood, paper, cardboard, onion and garlic.

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