Polycraft ZA22 Mould RTV Addition Cure Mould Making Silicone Rubber
Size: 500g KitSize: 1Kg KitSize: 2Kg KitSize: 4Kg KitSize: 10Kg Kit

Polycraft ZA22 Mould RTV Addition Cure Mould Making Silicone Rubber

Price:  £15.00(Inc. 20% VAT)(£12.50 Exc. VAT)Earn 15 Loyalty Points
Quick Link Code:  QL8521

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Polymerization:  Addition Cure

ZA 22 Mould  suitable for the casting of final products manufactured in the form of ZA 22 Mould, you can use moulding materials based on polyurethane, polyester and epoxy resins, gypsum, both conventional and polymer, various types of concrete, the mixture for the production of ceramics, and other similar materials.

ZA 22 Mould in primary form, is RTV silicone rubber, consisting of two components (base and catalyst), which is cured at room temperature.

Zhermack ZA22 Mould Silicone Unit
Mix Ratio By Weight 1A : 1B
Mixing Time @ 23°C 1 min
Working Time @ 23°C 14 - 17 mins
Cure Time @ 23°C 1 hr
Viscosity Of Pre-Catalysed Mix 4000 ± 300 cP
Shore A Hardness After 24 Hours 21 ± 2 ShA
Tensile Strength 4.0 ± 0.2 N/mm²
Elongation At Break 380 ± 20%
Tear Resistance (Die B) 20 ± 1 N/mm
Tear Resistance (Die C) 12 ± 1 N/mm
Cure Colour Blue

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.

Base and catalyst use universal containers for various kit sizes and are supplied by weight, while the supplied containers may not be full, they will contain the correct amount of both base and hardener according to the listing.

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Polycraft ZA22 Mould RTV Addition Cure Mould Making Silicone Rubber

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