Silicone rubber is a polymer formulated that can be vulcanized at room temperature to obtain an object with a defined shape and with all the properties of rubber by adding a suitable catalyst or vulcanizing agent. They are known as RTVs (room temperature vulcanization) and are vulcanized at room temperature.
Silicone rubbers are mainly divided into two main categories: polyaddition and polycondensation.
Polyvulcanization is the technology currently used for LSR (Liquid Silicone Rubber) silicone rubber. Poly-added silicone rubber is cross-linked even at room temperature under the action of a platinum catalyst with a yield close to 100%.
The silicone rubber used for polycondensation is also cross-linked at room temperature, usually using a tin-based catalyst, so it does not suffer a significant risk of inhibition or poisoning. However, the reaction speed is slower, so they experience delayed cross-linking.
Directions for use.
Remove an equal volume from the container and mix with your fingers until a homogeneous yellow paste is obtained. Press the dough with your fingers until it covers the entire part to be replicated, being careful not to leave any gaps or air bubbles.
Due to the limited application time, it is necessary to prepare small quantities at a time to avoid hardening before proper application.
No release agent is required.
Hand guards are not required.
Processing recommendations.
The optimal processing conditions are 25°C. Higher temperatures reduce pot life as well as hardening and maturation times.
Conversely, lower temperatures triple the temperature.
We do not recommend in:
Use at temperatures below 15°C, which will deteriorate the mechanical properties and chemical resistance of the vulcanized product;
Above 45°C to avoid higher linear shrinkage.
Warnings for proper use.
RTV-530 silicone rubber is additive.
These rubbers, unlike condensation rubbers, require special attention because they are intolerant to certain substances that inhibit their catalytic action.
First of all, never use tools, containers or spatulas that have been used with ordinary condensation rubber: these two types are absolutely incompatible, and the slightest contact will prevent catalysis.
In addition, it is important to take care that the master used as a model does not contain even a very small amount.
Trace amounts of gums and condensation catalysts, all products containing very small amounts of sulfur and derivatives, polyneoprene rubbers, resins, polyester-based fillers and putties, non-wax-based plasticines and glass putty, PVC, tin and heavy metals in ionic form, amines, natural and synthetic rubbers.
Therefore, if the model contains these substances or is made of one of these materials, it must be covered with a layer of release wax to isolate the master mold from the rubber.
Waxes must be tested beforehand, as some may contain trace substances that inhibit catalysis. Even some natural** waxes can cause this inconvenience.
Polyvinyl alcohols may be fine, but they tend to steer clear of silicones, so it's best to avoid them.
Purified petroleum jelly (i.e., medicinal petroleum jelly) is fine, but liquid petroleum jelly is not recommended as they may wipe off the silicone.
Beauty creams for daily use can be used after examination: certain natural extracts can cause problems.
In the original packaging, at a temperature of -5°C to +30°CCan be stored for 24 months.
Warn.
Do not use at temperatures below 14-15°C.
Follow instructions for contact with certain materials.