Applications of NTC-Coatings in Air-Conditioning Technology Basic
NTC Nano Tech Coatings GmbH Founded: 2000 Location:
Tholey / Germany
Develops and produces new High-Tech Coatings for metal surfaces based on Chemical Nanotechnology.
Business Area:
Functional Coating Materials For Metal Surfaces
Nee Materials via Sol-Gel Process
•Novel synthesis routes for coating materials
•Production of particles in Nanometer-scale
•Specific adjustment of
coating properties
Organic-Inorganic Hybrid-Polymeres Resistant against: -
UV-Light
-
Temperature (-cycles)
-
Environmental influences (Hydrolysis, Weathering etc.)
Nanocoatings on Metals:
•Abandonment of hexavalent Chromium and other Heavy Metals
•Thin Coatings •Very low Material Consumption
•Improved Coating Properties
Coating Properties: Caoting thickness: Clearcoating:
3 - 5 microns
Pigmented:
5 - 15 microns
Adhesion to: Metals (Al, Mg, Stainless Steel ...) Glass / Ceramic
Stove-Enamel:
Single-Component Coatings Thin Coatings for Light Metals and Stainless-Steel Excellent Corrosion Protection and easy-to-clean Properties
Advantages of Coatings:
•Abandonment of hexavalent Chromium and other Heavy Metals
•Pretreatment is reduced to Alkaline Cleaning •Thin Coatings, low Material Consumption •Improved Coating Properties
Salt-Spray-Testing
Application Examples: Air-Conditioning Technology
Sources of Contamination: • Dust (for example from Grinding Machines) • Abrasion • Fluff Ball (from Textiles, Polymers) • Oleiferous Air • Acidic Air
Satrting point: Cooling unit at grinding machine
Cooling unit in elctrical control cabinet at textile industry
Today‘s Solutions: • Use of Filter Pads
• Continuous cleaning with compressed-air
Customer‘s statements about „Maintenance“: • No more maintenance wanted • Maintenance is expensive • We have no financial and human resources for maintenance • Devices should work for their whole life
Why Nanocoatings? Advantages: • Specific adjustment of coating properties possible • Here: Easy-to-clean properties • New coating materials are based on high chemical bonding energy •Resistant against temperature and environmental influences • Chemical basis shows stable soil-resisting properties • Non-polar surface properties
Why Nanocoating? Advantages: - Environment friendly production process: Conventional coating use Chromium, Zirconium or Titanium on Aluminium surfaces - These pretreatments can be avoided - Liquid coating materials
Flow of coating process:
Cleaning of Heat-Exchanger
Coated part
Uncoated part
Coating process
Quality testings: - Acidic Humidity: (30 Cycles, 0.2 SO2) ISO 3231 - Konstant Humidity: (1,000 h) DIN 50 017 - Salt-Spray: (> 3,000 h) ESS ISO 9227 - Boiling test: (2 h dest. Water) - UV-Resistance:
QUV 300 h ISO 11507
- Heat transfer: DIN 3168 Positive test results: - No damaging, blistering or softening of the coatings!
Example: 500 h salt-spray chamber Conventional coating
NTC coating
Results of practical testings: Used during production of carbon brushes for electric motors
10. Februar 2006
5. September 2006
7. März 2007
12. September 2007
Results of practical testings: Used in casting house and finishing of stainless steel pipes
2. Juni 2006
7. November 2006
18. April 2007
14. September 2007
Electrical controle cabinet cooling unit at brakedisc production Present state: - Fleece filter is changed continuously, yearly total cleaning of the unit - Fleece filter are strongly contaminated after 15 days of use - Condenser is already polluted, traces of oil
Electrical controle cabinet cooling unit with Nanocoating
- Condenser is clean, - Examination with Endoscope and fleece paper show no traces of pollution
Energy balance at the use of Nanocoatings: -Energy consumption is reduced 30 % in comparison to uncoated parts! -Equivalent CO2-output also reduced 30 %! 3,500 kg 3,000 kg 2,500 kg 2,000 kg 1,500 kg
1092
1,000 kg 500 kg 0 kg
Clean
Polluted
Difference
Only 3% of greenhouse effect results from freezing agents, but 97% are a result of Energy consumption of the cooling units.
Resume and Future prospects • Reduced adhesion of dust particles at the fins of the condensors, leading to increased economic life-time and extended service intervalls • Successful use in technical units since 2000 • Production process is eco-friendly and energy-saving • Reduction of power drop of the cooling units in continuous duty, resulting in high energy efficiancy • In many industrial applications (dry dust) no use of fleece filters needed • Easy-to-clean surface
German Material Afficiancy Award 2004 for NTC from German Minister for Economy and Labor
Tholey / Germany
Develops and produces new High-Tech Coatings for metal surfaces based on Chemical Nanotechnology.
Business Area:
Functional Coating Materials For Metal Surfaces
Nee Materials via Sol-Gel Process
•Novel synthesis routes for coating materials
•Production of particles in Nanometer-scale
•Specific adjustment of
coating properties
Organic-Inorganic Hybrid-Polymeres Resistant against: -
UV-Light
-
Temperature (-cycles)
-
Environmental influences (Hydrolysis, Weathering etc.)
Nanocoatings on Metals:
•Abandonment of hexavalent Chromium and other Heavy Metals
•Thin Coatings •Very low Material Consumption
•Improved Coating Properties
Coating Properties: Caoting thickness: Clearcoating:
3 - 5 microns
Pigmented:
5 - 15 microns
Adhesion to: Metals (Al, Mg, Stainless Steel ...) Glass / Ceramic
Stove-Enamel:
Single-Component Coatings Thin Coatings for Light Metals and Stainless-Steel Excellent Corrosion Protection and easy-to-clean Properties
Advantages of Coatings:
•Abandonment of hexavalent Chromium and other Heavy Metals
•Pretreatment is reduced to Alkaline Cleaning •Thin Coatings, low Material Consumption •Improved Coating Properties
Salt-Spray-Testing
Application Examples: Air-Conditioning Technology
Sources of Contamination: • Dust (for example from Grinding Machines) • Abrasion • Fluff Ball (from Textiles, Polymers) • Oleiferous Air • Acidic Air
Satrting point: Cooling unit at grinding machine
Cooling unit in elctrical control cabinet at textile industry
Today‘s Solutions: • Use of Filter Pads
• Continuous cleaning with compressed-air
Customer‘s statements about „Maintenance“: • No more maintenance wanted • Maintenance is expensive • We have no financial and human resources for maintenance • Devices should work for their whole life
Why Nanocoatings? Advantages: • Specific adjustment of coating properties possible • Here: Easy-to-clean properties • New coating materials are based on high chemical bonding energy •Resistant against temperature and environmental influences • Chemical basis shows stable soil-resisting properties • Non-polar surface properties
Why Nanocoating? Advantages: - Environment friendly production process: Conventional coating use Chromium, Zirconium or Titanium on Aluminium surfaces - These pretreatments can be avoided - Liquid coating materials
Flow of coating process:
Cleaning of Heat-Exchanger
Coated part
Uncoated part
Coating process
Quality testings: - Acidic Humidity: (30 Cycles, 0.2 SO2) ISO 3231 - Konstant Humidity: (1,000 h) DIN 50 017 - Salt-Spray: (> 3,000 h) ESS ISO 9227 - Boiling test: (2 h dest. Water) - UV-Resistance:
QUV 300 h ISO 11507
- Heat transfer: DIN 3168 Positive test results: - No damaging, blistering or softening of the coatings!
Example: 500 h salt-spray chamber Conventional coating
NTC coating
Results of practical testings: Used during production of carbon brushes for electric motors
10. Februar 2006
5. September 2006
7. März 2007
12. September 2007
Results of practical testings: Used in casting house and finishing of stainless steel pipes
2. Juni 2006
7. November 2006
18. April 2007
14. September 2007
Electrical controle cabinet cooling unit at brakedisc production Present state: - Fleece filter is changed continuously, yearly total cleaning of the unit - Fleece filter are strongly contaminated after 15 days of use - Condenser is already polluted, traces of oil
Electrical controle cabinet cooling unit with Nanocoating
- Condenser is clean, - Examination with Endoscope and fleece paper show no traces of pollution
Energy balance at the use of Nanocoatings: -Energy consumption is reduced 30 % in comparison to uncoated parts! -Equivalent CO2-output also reduced 30 %! 3,500 kg 3,000 kg 2,500 kg 2,000 kg 1,500 kg
1092
1,000 kg 500 kg 0 kg
Clean
Polluted
Difference
Only 3% of greenhouse effect results from freezing agents, but 97% are a result of Energy consumption of the cooling units.
Resume and Future prospects • Reduced adhesion of dust particles at the fins of the condensors, leading to increased economic life-time and extended service intervalls • Successful use in technical units since 2000 • Production process is eco-friendly and energy-saving • Reduction of power drop of the cooling units in continuous duty, resulting in high energy efficiancy • In many industrial applications (dry dust) no use of fleece filters needed • Easy-to-clean surface
German Material Afficiancy Award 2004 for NTC from German Minister for Economy and Labor
