Add Plat Thix Liquid Thickening Agent to Platsil Silicone Rubbers to thicken the liquid mix for brush-on application. Add up to 5% Plat Thix of the total mixed weight of Platsil A + B. Experiment to determine the best amount to add for your particular application. For additional information, read the Technical Bulletin associated with the Platsil product being used.
Thickening for Brush-on
In order to make brush-on blanket moulds, thicken Platsil rubbers by adding Plat Thix liquid thickener (up to 5%, by weight) or Fumed Silica. When brushing on several layers of silicone, wait for the first layer to “gel” (not fully cured, but when the rubber has cured enough that application of a subsequent layer will not disturb the previous layer) before applying the next layer. Delamination can occur when too much time has passed in between layers. Do not allow the layer to fully cure before applying the subsequent layer. Ambient and surface temperature can affect gel and cure times.
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