Description
QSil DBT catalyst from CHT Group speeds the cure of condensation-cure RTV silicone rubber compounds used for mold making, encapsulation, and general shop sealing work. Supplied here in a 4 oz bottle, it is dosed into the base silicone at a small percentage by weight before pouring or brushing, shortening the time between mixing and a usable, tack-free mold.
Where QSil DBT Catalyst Is Used
Mold makers reach for this catalyst when a shop needs a mold ready sooner rather than waiting out a long, unaccelerated cure. It works with one-component and two-component condensation-cure silicone systems used to reproduce concrete texture, cast plaster and wax patterns, and build production molds for repeat pours. A small bottle like this 4 oz size is a practical way to keep a fresh, uncontaminated dose on hand without opening a larger container for every job.
How QSil DBT Catalyst Performs
As a dibutyltin-class catalyst, it accelerates the moisture-driven condensation reaction that cures RTV silicone from a liquid to a solid rubber. Dosage is small, typically well under one percent by weight of the base compound, and higher dosage shortens working time as well as cure time, so shops usually start on the low end of a manufacturer’s recommended range and adjust from there. This chemistry works only with condensation-cure (tin-cure) silicone systems, not platinum (addition-cure) silicones, since platinum catalysts follow a different reaction path and tin residue can interfere with platinum cure entirely. Pot life and final cure both depend on ambient humidity and temperature, so a shop should expect faster cures in a warm, humid area and slower cures in cold, dry conditions.
Specifications
| Property | Value |
|---|---|
| Brand | CHT Group |
| Product | QSil DBT |
| Container Size | 4 oz bottle |
| Weight | 0.4 lbs |
| Chemistry | Dibutyltin condensation-cure catalyst |
| Use | RTV silicone mold and casting rubber |
Add catalyst gradually and mix thoroughly into the base before pouring, since uneven dispersion leads to soft spots or slow-curing pockets in the finished mold. Browse catalysts, hardeners, and mold rubber in the molding materials category. CHT Group publishes technical data on its condensation-cure silicone systems at cht.com.
Need Help?
Need help setting catalyst dosage for your mold rubber and shop temperature? Call (800) 220-1966 or email [email protected].
Reviews
There are no reviews yet.