PVDF (PVF2)

POLYVINYLIDENE DIFLUORIDE

Tomburn is an approved applicator of PPG Durnar and Sunstorm PVDF systems which are renowned throughout the International Architectural Market for extensive colour ranges, durability, weather resistance and colour retention. 

PPG Duranar is the Worlds Most Recognised Architectural Coating Brand Name and consists of a 70:30 blend of PVDF:Acrylic Resin. PVDF resin is the best performing system available to resist fading, chalking and film degredation.

These fluropolymer coatings are made up of two, three and four coat systems, consisting of a primer, colour coat and a clear coat. In the case of four coat systems a barrier coat is applied after the primer coat. Research and development over many years have ensured the whole product range has achieved the highest order of technical excellence.

Tomburn is approved to apply the following systems:  

Duranar	Two Coat System, Solid Colours,  min 30µm
Duranar XL	Three Coat System, Mainly Metallic Colours, min 40µm
Duranar XLBC	Four Coat System, Mainly Metallic Colours, min 65µm
Duranar Sunstorm	Two Coat System, Mica Colours, min 30µm
Duranar ADS	Air Drying Version of the above

PVDF Vs ACRYLIC, POLYESTER & SILICONE POLYESTER COATINGS

In 1981 Tokyo Steel, Japan made a test fence out of the south wall of a new plant they were building. They wanted to test the weatherability of Taiyo Steel's precoated metal products. Fourteen years later, Kynar 500 resin-based coating was the only system that kept its original appearance.

- PVDF has better chemical resistance - the Kynar resin which forms part of PVDF was originally used to

  manufacture pipes which carried concentrated acids. This is a contributing factor to the high resistance to

  damage by industrial pollution.

- PVDF will give better corrosion protection with no known instance of filiform corrosion

- PVDF has better resistance to colour change and chalking - all pigments used have passed AAMA 605 testing, 5

  years in South Florida (actual time testing not accelerated testing). Complies with AAMA 605 - which currently

  no Anodised or Polyester Powder Coat can.

- PVDF has better resistance to degradation by UV light - hence a popular solution in the Middle East.

- PVDF shows superior resistance to sand abrasion in tests comparing the results against: Silicone

  Polyester/Baked Enamel/Urethane/Anodised/Porcelain/Plastisol/Film finishes.

- Duranar PVF2 (Spray Application) has a Class 0 Fire Rating (BS476, Part 6 and 7) on an Aluminium Substrate

  for both Duranar and Duranar XL Systems.

- Superior protection against industrial pollution, marine environment attack and airport environmental pollution.