Thixotropic agent
Thixotropic agents are additives with which, for example, resins can be converted into a gel-like state. They have a large internal surface area (approx. 200 m²/g) and thus bind a lot of resin.When stirred (subjected to shear forces), the thixotropic mixture is thinner than when at rest. The amorphous silica thereby builds up a reversible, gel-like silica skeleton. This promotes easy spreading of the coating, either as a top coat in molds or as a finish in positive coatings.
- Produces thixotropic, gel-like fillers and gelcoats
- For epoxy, polyester and vinyl ester resins
Color: white
Addition: 0.5-5 % by weight, depending on the desired thixotropy and application thickness. However, these guide values are dependent on the viscosity of the resin and the ambient and substrate temperature. Preliminary tests to adjust the desired properties are required.
Storage: Thixotropic agents are highly hygroscopic (water-attracting) and must therefore be stored in a dry place. Only dry thixotropic agents may be used for thickening resins, otherwise water will be carried into the resin/hardener mixture. This can lead to incorrect curing such as sticky or greasy surfaces.The volume details are intended to assist in judging the amount supplied. These details refer to the loose bulk amount. The contents may become compressed during transport or storage, and, in conjunction with humidity, can form agglomerates. Solid contents have to be ground or spread through a screen prior to their use.
