many customers because of processing conditions or product constraints, ask us teflon coating can be self-drying?

our answer is no, must go through high temperature baking.

Teflon coating is divided into two layers: primer and top coating. The functional material of the topcoat is PTFE micropowder, which provides non-adhesion and corrosion resistance. The primer contains PAI polyamide-imide resin, which provides strong adhesion between the topcoat and the substrate.

these two kinds of resin, it has a high bond energy, it is difficult to destroy its bond energy at low temperature, so it can not be found with other substances at low temperature. At present, what curing agent and catalyst are added, which can not make it cross chain.

we usually see that Teflon coating is attached to the surface of the workpiece, in fact, it is not a chemical change. It does not undergo chemical reaction, but a physical change. It is a melting process. When heated to 380 degrees, PTFE micropowder will melt and bond with the primer. The primer will bond with the workpiece. The primer and topcoat will be paved on the surface of the workpiece. In this way, the performance of Teflon coating is non-stick and corrosion-proof, can be reflected.

However, if it does not reach 380 degrees, it will not melt, and the surface will turn white, because the temperature is not enough, it has not melted, but the solvent volatilizes, and the surface left on the workpiece is Teflon micro-powder, which looks white. (In simple terms, it is like candle wax. After reaching the temperature, it melts and becomes transparent. If the temperature is not reached, even if the baking time is prolonged, the wax will not melt) the feeling of powdering, the adhesion is extremely poor, and the paint can be buckled off with a little nail.

, if the temperature reaches 380 ℃ and the time is enough, the Teflon powder will melt, the topcoat will become transparent, and the primary color of the primer will be revealed.

many customers often ask, is there any self-drying teflon paint? in fact, customers know that the characteristics of teflon paint is non-stick, so they want a kind of non-stick self-drying paint, this kind of paint is there.