Namo PVDF Coated Aluminium Coil Sheet

Product Description

NAMO PVDF Coated Aluminium Coil Sheet

Coil coating makes use of a simple, but effective principle to clean, pretreat and coat flat coils or sheets of steel or aluminium in a continuous operation, before other stages of industrial manufacture [1-4]. The slogan for this concept is: Finish first - fabricate later!

 Essentially, Chalco coat's NAMO PVDF consists of a titanium dioxide layer that is applied to the painted aluminium using a coil-coating process. Under the incidence of sunlight, the light-sensitive titanium dioxide acts as a catalyst, even in conditions of low humidity. On the surface, the electrons released by the UV light from oxygen radicals, and these in turn break down the smog molecules into their larmless consitituents.

Smog consists of various nitrogen compounds, generally designated by the abbreviation NO. Nitrogen oxide does not just dirty buildings, it also pollutes the air we breathe. On cladding that is coated with CHALCO COAT'S NAMO, the nitrogen oxide molecules are attacked by the free oxygen radicals and broken down into harmless reaction products such as water and nitrates.

Coming with hydrophobic and lipophobic surface, the NAMO PVDF coated aluminium coils sheets features good water and dirt resistance. The protected object stays clean much longer and can be easily cleaned with pure water.
 The lotus effect is the most distinguished characteristic of NAMO PVDF coated aluminium coils sheets. The lotus leaf is never polluted by dirt although coming from silt. The same as lotus leaves, Chalco Coat's NAMO PVDF coated aluminium coils sheets has high water repellency and the dirt on its surface can be easily cleaned away by a heavy rain.

 Why choose Chalco Coat's Nano PVDF coated aluminium coils sheets?
 Chalco Coat get a patent for nano-PVDF panel which has the following advantages.
- Excellent easy-cleaning.
- Pollution Resistance
- Oil resistance
- Good Friction Resistance
- Strong Acid & Alkali Resistance
- Outstanding weather resistance

Aluminum coated coil alloy: AA1100,AA1050, AA3003, AA3004, AA3005, AA3105, AA5005, AA5182, AA5052, AA5754, AA5454, AA8011
 Temper: O/H42/H44/H46/H48
 Aluminum thickness (gauges): 0.02mm to 3.0mm
 NAMO PVDF pre-painted aluminum coil width: 10mm to 1800mm
 Coating: polyvinylidene difluoride (NAMO PVDF), no less than 25 micron for two times coating, three times coating 32micron.
 6) Available colors: solid, metallic, marble, wood, anti-static, anti-scratch, etc
 7) Coating hardness (pencil hardness): more than 2HB
 8) Impact resistance: no cracking or peeling
 9) Flexibility (T-bend): 2T
 10) MEK resistance: more than 100 times
 11) Further Processing: embossing, cutting to solid aluminium sheets, slitting to aluminium strips, etc

Three Coating Options:
 1. Self-clean Namo coating
 With Namotechnology, our Namo PVDF coating could make it clean itself using sun and rain, maintenance and cleaning cost are reduced by at least 50%.
 2. Durable coating
 With our high-performance coating based on polymer resin, resistant to UV rays, moisture and abrasion. With such coating we can guarantee of up to 20 years.
 3. Gloss coating
 We have 3 gloss levels coating are available: High gloss, satin and matt.

Advantages and applications
Due to above characteristics, the Nano PVDF coated aluminium coils sheets is ideal for wall decoration and protection for office buildings, shopping centers, industrial building.
 Property comparison between Nano-PVDF coating and PVDF coating

Coating Type NANO Coating PVDF Coating
Paint Particle 0.001micron-0.03micron 0.3micron
Pollution Resistance Dust hardly sticks on the panel Dust sticks easily
Easy-cleaning Dust goes away with bead NIL
Friction Resistance Over 10,000 times Several thousands times
Acid Resistance 5% HCI, 240 hrs 24 hrs
Alkali Resistance 5% NaOH, 240 hrs 24 hrs
Oil Resistance 20# machine oil, 240 hrs 24 hrs
Weathering Both paints have prominent feature of weather proofing and color retention.

The paint layer comparison of PVDF and Nano-PVDF under atom microscope.
The final result shows that the surface paint structure of Nano-PVDF NAMO PVDF coated aluminium coils sheets is denser than that of normal PVDF coated aluminium coils sheets.. So, the former keeps better pollution resistance.

In details: This is how the Chalco Color NAMO coating works:
 Under the influence of sunlight, a photoelectric effect in the titanium dioxide layer results in the creation of available energy from electrons.

This energy creates free oxygen superanions and hydroxyl radicals that lead to the break down of organic substances.
The superhydrophilic properties come from the increase in surface energy caused by the electrons. The surface attracts humidity with the result that no drops are formed, but a thin layer instead.
The harmful substances that have been broken down slide off this smooth surface or are simply washed to the bottom by rain.