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                                                  adjustable hardness liquid silicone rubber for statues mold making

Description of where to buy silicone rubber with harder

The YI JIA SAN  RTV520  SILICONE RUBBER is very similar to RTV586# , WHICH IS  a silicone elastomer which, after the addition of a catalyst, cures at room temperature and leads to a flexible and elastic material.

Examples of applications of where to buy silicone rubber with harder
Moulds for the production of parts made of different materials, such as plaster, wax, acrylic resin, polyester resin, epoxy resin, as well as silicone elastomers, with following application
examples:
• Decoration items: cornices, , ornaments, statues,
• Figurines: toys, candles, statues, giftware,
• Furnishing: furniture and decorative parts
• Construction: decorative items, pavement, paving stone, columns
• Artistic foundries: molds for the lost wax casting technique
Advantages • Good fluidity.
• Excellent mechanical properties, in particular tear strength.
• Excellent flexibility and its low modulus facilitate the mould release.
• Range of catalysts allowing the BLUESIL RTV 3325 to fulfill the requirements for various

Applications of where to buy silicone rubber with harder
YI JIA SAN  24H: standard kinetics (24 hours mould release)
YI JIA SAN  CATA 6H: fast kinetics ( 6 hours mould release)
YI JIA SAN   CATA SPE: special catalyst with high polyester resistance
YI JIA SAN  CATA THIXO: thixotropic catalyst
These catalysts have the advantage of being odourless.

 Datesheet of where to buy silicone rubber with harder

Processing It is advised to remix both base and catalyst before mixing them together.

1. Mixing of the two components
To 100 parts of YI JIA SAN RTV520#  add 2 parts of the selected catalyst.
The two components are thoroughly mixed either using an electrical or pneumatic mixer on a low speed setting so as to limit the inclusion of air in the mixture as well as temperature rise.

2. Degassing
After mixing base and catalyst, it is recommended to degas to eliminate entrapped air. If the processing is done with the help of a machine both parts are degassed before mixing. The YI JIA SAN RTV520# is degassed under vacuum pressure of 30 to 50 mbar. Under vacuum pressure, the product will expand 3 at 4 times its initial volume and forms bubble on its surface.
This bubble will disappear gradually and the mixture will sink back down to its initial volume within 5 to 10 minutes. Release the vacuum and repeat the operation a few minutes later. Remark: release the vacuum several times improves the degassing. For easier degassing only fill a recipient to 1/3 of its height.

3. Cross linking
The best curing conditions are at 23 °C and 50 % relative humidity. The use of products at higher temperatures and/or relative humidity levels will reduce the pot life and increase the setting rate. As opposed to this, lower temperatures and relative humidity levels will increase the pot life and decrease the setting time. It is recommended not to use the product at temperatures below 20°C; under these conditions, the final product performance levels will be difficult to achieve.

At 23 °C and 50 % relative humidity, the membranes can be demolded after 16 to 24 hours. In order to achieve the best possible performance levels from the membranes, it is preferable to wait for 24 hours before using them. The definitive properties will be acquired after 3 days.

Packaging 

YI JIA SAN RTV 520: 5 kg bucket (96 buckets per pallet)
Catalyst: 250 gr. bottle (96bottles per cardboard)

YI JIA SAN RTV 520:: 25 kg plastic pail (18 pails per pallet)
Catalyst: 1 kg bottle (18 bottles per cardboard)

YI JIA SAN RTV 520:: 200 kg metal drum (4 drums per pallet)
Catalyst: 20 kg drum (2 drums per pallet)

Storage and shelf life

When stored in their original unopened packaging at a temperature of between – 5°C and + 30°C:
YI JIA SAN RTV 520: may be stored for up to 12 months,
Catalysts may be stored for up to 12 months,
from the date of manufacture clearly marked on the packaging.
Beyond this date, YI JIA SAN  Silicones no longer guarantees that the products meet sales specifications.
Part used drums should be resealed between each use.

Warning to the users
The information contained in this document is given in good faith based on our current knowledge. It is only an indication and is in no way binding, particularly as regards
infringement of or prejudice to third party rights through the use of our products. YI JIA SAN guarantees that its products comply with its sales specifications.
This information must on no account be used as a substitute for necessary prior tests which alone can ensure that a product is suitable for given use. Users are
responsible for ensuring compliance with local legislation and for obtaining the necessary certifications and authorisations. Users are requested to check that they are in
possession of the latest version of this document and YI JIA SAN  is at their disposal to supply any additional information

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