Zhermack ZA 10 Orange – Orange Platinum-Cure Addition Silicone for Mould Making & Casting

Premium Orange Platinum-Cure Addition Silicone for Professional Mould Making and Casting Applications

ZA 10 Orange is a pourable, two-component platinum-cure addition silicone that vulcanises at room temperature and cures at 23 °C to an orange end product with a hardness of Shore A 13. With a pot life of 15 minutes and a curing time of 120 minutes at 23 °C, it offers a practical combination of detail reproduction, elastic recovery and easy demoulding. The mix ratio is 1:1 by weight; the platinum catalyst is contained in the Catalyst component. ZA 10 Orange is suitable for applications where flexibility, tear strength and reproducible processing are important.

Key Benefits

• Mix ratio 1:1: – Equal amounts of Base and Catalyst make weighing simple.
• Pot life 15 minutes: – At 23 °C there is time for mixing, degassing and controlled pouring.
• Curing time 120 minutes: – The mould can be demoulded efficiently at 23 °C.
• Hardness Shore A 13: – The flexible mould makes it easier to demould complex details.
• Tear strength 14 N/mm: – The cured silicone is suitable for repeated use.
• Elongation at break 350%: – The high elongation gives leeway when releasing cast parts.

Typical Applications

• Silicone moulds for polyurethane resins in prototyping and product development.
• Reproduction moulds for acrylic resins in model making, architectural model making and product design.
• Casting moulds for plaster and coatings in set building, architecture and crafts.
• SFX, prop and set building for film, television, theatre and events.
• Industrial models and functional prototypes where elastic demoulding is required.
• Art and sculpture reproductions where flexibility and tear resistance are important.

Processing Instructions:

1. Stir the Base and Catalyst separately before weighing the components.
2. Weigh out both components in a 1:1 ratio. Only use Base and Catalyst with the same batch number; according to the information supplied, a deviation of up to 5% does not change the result.
3. Mix vigorously until the colour is uniform, scraping the bottom and sides of the mixing cup as you go.
4. Degas the mixture if necessary to reduce trapped air.
5. Pour within approx. 15 minutes, preferably from a height of about 30 cm.
6. Leave to cure for approx. 120 minutes at 23 °C. At 40 °C, pot life and curing time are roughly halved; at 4 °C, the pot life doubles and curing takes about three times as long.

Technical Characteristics

The mixture has a viscosity of approx. 4,500 mPa·s and a density of approx. 1.10 g/cm³. The cured silicone has a tensile strength of approx. 6 N/mm², an elongation at break of approx. 350%, a tear strength of approx. 14 N/mm and a service temperature range of −40 to 200 °C. These are typical values after 24 hours of vulcanisation at 23 °C and are not intended as product specifications.

Manufactured by Zhermack S.p.A., a specialist in materials for professional model making and mould-making applications.

Important Warning: Inhibition of Addition-Cure Silicones

Please note: This is an addition-cure (platinum-cure) silicone. These silicones can be inhibited by sulphur, nitrogen, amino compounds and metal salts. If you are not sure whether gloves, spatulas, models or 3D printing materials contain these substances, carry out a small test first. Inhibiting substances are found in latex gloves, some plasticines, condensation-cure silicones, one-component silicone sealants and certain 3D printing materials, among others. If in doubt, apply a layer of polyvinyl alcohol (PVA) as a barrier coat.

Professional Support

With ZA 10 Orange, make sure you use matching batch numbers, an accurate 1:1 mix and a clean, dry and grease-free surface. Contact us for technical data sheets, processing guides or product advice.