How does the performance of sol-gel coatings differ from PTFE coatings?

Sol-gel coatings have good initial release, high gloss and good stain resistance. Because they are ceramic-like, they also offer high continuous working temperatures with good abrasion and surface hardness.

Release: Initial nonstick properties of sol-gel coatings are excellent, even better than many conventional nonstick PTFE coatings. However, ceramics rely on siloxane chemistry for nonstick properties, so the release characteristic may diminish over time. Proper use and care can significantly affect the rate of decline of nonstick properties. By comparison, conventional nonstick PTFE coatings provide very good release for a longer period of time.

Abrasion Resistance: Ceramic systems are harder and less ductile than PTFE coatings.

Temperature Resistance: Ceramic coatings will survive 450°C/840°F. However, the release properties begin to diminish when exposed to temperatures above 350°C/660°F for extended periods of time. The coating remains functional because the matrix is very hard. In comparison, conventional PTFE coatings begin to deteriorate at 260°C/500°F.

Stain Resistance: When properly applied, ceramics have very good stain resistance, even in white. In contrast, PTFE coatings have less stain resistance, especially in light colors.

Colors: Ceramics can be made in a variety of colors like blue, green, red and even “Appliance White.” They will maintain color at high temperatures. This is not the case with PTFE coatings and the reason why most are black or grey

Application: sol-gel coatings are easy to apply if you follow the manufacturing guidelines. This involves good process control and achieving accurate temperature and residence-time targets. These parameters influence adhesion, coating thickness and aesthetics. Many problems with adhesion or staining can be traced back to improper temperatures during the application process.

 
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Sol-Gel Ceramic Coatings

How does the performance of sol-gel coatings differ from PTFE coatings?

Sol-Gel Ceramic CoatingsSol-gel coatings have good initial release, high gloss and good stain resistance. Because they are ceramic-like, they also offer high continuous working temperatures with good abrasion and surface hardness.

Release: Initial nonstick properties of sol-gel coatings are excellent, even better than many conventional nonstick PTFE coatings. However, ceramics rely on siloxane chemistry for nonstick properties, so the release characteristic may diminish over time. Proper use and care can significantly affect the rate of decline of nonstick properties. By comparison, conventional nonstick PTFE coatings provide very good release for a longer period of time.

Abrasion Resistance: Ceramic systems are harder and less ductile than PTFE coatings.

Temperature Resistance: Ceramic coatings will survive 450°C/840°F. However, the release properties begin to diminish when exposed to temperatures above 350°C/660°F for extended periods of time. The coating remains functional because the matrix is very hard. In comparison, conventional PTFE coatings begin to deteriorate at 260°C/500°F.

Stain Resistance: When properly applied, ceramics have very good stain resistance, even in white. In contrast, PTFE coatings have less stain resistance, especially in light colors.

Colors: Ceramics can be made in a variety of colors like blue, green, red and even “Appliance White.” They will maintain color at high temperatures. This is not the case with PTFE coatings and the reason why most are black or grey

Application: sol-gel coatings are easy to apply if you follow the manufacturing guidelines. This involves good process control and achieving accurate temperature and residence-time targets. These parameters influence adhesion, coating thickness and aesthetics. Many problems with adhesion or staining can be traced back to improper temperatures during the application process.


 

 

 
 
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