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Thixotropic Thickener for Silicone is an add-itve used to increase the viscosity of RTV-2 addition-cure and condensation-cure silicones. It transforms liquid silicone into a thicker or pasty consistency, suitable for vertical applications, brushing, or spreading with a spatula.
Ideal for creating silicone molds by brush or skin molding, it limits sagging when applied to sculptures, statues, bas-reliefs, walls, and complex shapes. This technique allows for the creation of a silicone skin directly on the model without the need for a full mold box.
Thoroughly mix the silicone base with its catalyst.
Add 0.5 to 2% thixotropic thickener relative to the weight of the silicone. Start with a small amount and adjust gradually until the desired viscosity is reached.
Mix thoroughly for 2 to 4 minutes until the desired viscosity is achieved.
Apply by brush or spatula in several layers until the desired thickness is reached.
Gradually add 0.5 to 2% thixotropic thickener to the silicone to increase its viscosity and limit sagging.
Adding a thixotropic agent gives the silicone a thicker consistency, allowing it to be applied by brush or spatula to a vertical surface.
Generally use 0.5 to 2% by weight. Start with a low dosage and increase gradually depending on the desired viscosity and the silicone used.
Yes. The thixotropic agent is particularly suitable for making brush-on or skin molds, especially on sculptures, statues, walls, stones, and bas-reliefs.
Yes. This thickener can be used with compatible RTV addition and condensation silicones. It is recommended to perform a preliminary test for any new silicone formulation.
At recommended dosages, its influence on the final hardness of the silicone generally remains low. Follow the recommended dosage and perform a preliminary test for demanding applications.
Thixotropy allows for the creation of a silicone skin directly on a model and generally avoids the need for the leak-proof mold box required for liquid silicone. Depending on the shape and dimensions of the mold, a support shell or mother mold may still be necessary.
