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Environmentally Friendly Protective Coating System Using Water-Borne Fluoropolymer TopCoat

Environmentally Friendly Protective Coating System Using Water-Borne Fluoropolymer TopCoat
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In recent years, many tall and large-scale structures have been constructed under harsh environmental conditions. It is required to protect steel structures from a variety of environmental factors over a long period of time. In order to meet such requirements, the increase in durability, extension of lifetime and reduction in life-cycle cost of protective coatings has constantly been the subject of investigations. 

Product Number: 51217-054-SG
Author: Tsuyoshi Matsumotoa, Kenichiro Yamauchia , Naoki Yabumia, Tsuyoshi Miyashitaa , Hiroyuki Tanabeb
Publication Date: 2017
Industry: Coatings
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$20.00
$20.00

In recent years, many tall and large-scale structures have been constructed under harsh environmental conditions. It is required to protect steel structures from a variety of environmental factors over a long period of time. In order to meet such requirements, the increase in durability, extension of lifetime and reduction in life-cycle cost of protective coatings has constantly been the subject of investigations. Solvent borne (S/B) fluoropolymer topcoat which has the chemical structure FEVE (fluoroethylene vinyl ether) was developed in Japan in 1983 and applied in great quantity for large-scale constructions such as governmental projects.1)-8) Several years ago, water based (W/B) FEVE fluoropolymer paints and its systems were developed in order to meet the environmental requirements. Recently, for the purpose of the maintenance and conservation of the global environment, it has been demanded to control the emission of certain volatile organic solvents (VOCs; Volatile Organic Compounds) which are considered to be one of the causes of photochemical smog and/or global warming. To address this requirement, efforts have been made to reduce the amount in VOC contained in coatings. In this paper, weathering performance and some track records of both the solvent borne fluoropolymer topcoat and the newly developed water borne (W/B) fluoropolymer topcoat systems are discussed, comparing the performances against each other.

In recent years, many tall and large-scale structures have been constructed under harsh environmental conditions. It is required to protect steel structures from a variety of environmental factors over a long period of time. In order to meet such requirements, the increase in durability, extension of lifetime and reduction in life-cycle cost of protective coatings has constantly been the subject of investigations. Solvent borne (S/B) fluoropolymer topcoat which has the chemical structure FEVE (fluoroethylene vinyl ether) was developed in Japan in 1983 and applied in great quantity for large-scale constructions such as governmental projects.1)-8) Several years ago, water based (W/B) FEVE fluoropolymer paints and its systems were developed in order to meet the environmental requirements. Recently, for the purpose of the maintenance and conservation of the global environment, it has been demanded to control the emission of certain volatile organic solvents (VOCs; Volatile Organic Compounds) which are considered to be one of the causes of photochemical smog and/or global warming. To address this requirement, efforts have been made to reduce the amount in VOC contained in coatings. In this paper, weathering performance and some track records of both the solvent borne fluoropolymer topcoat and the newly developed water borne (W/B) fluoropolymer topcoat systems are discussed, comparing the performances against each other.

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Product Number: 51217-028-SG
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Performance, cost, and safety drive the coatings industry. Safer and environmentally friendly coatings continue to be a hot topic of discussion globally; however, the adoption of greener coating technologies is slow, especially in the US. This could be attributed to many factors, but from the formulator's perspective, performance is key. Waterborne coatings have been used in architectural applications for decades, but typically these coatings are valued mostly for aesthetics, ease of use, and low cost. 
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Over the last few years, the protective coatings industry has seen an increased demand for high performance waterborne coatings in the field of corrosion protection. Market drivers such as “Sustainability”, “Greenability”, and ongoing regulatory and environmental concerns continue to force coatings producers to look for other viable options to replace conventional solvent borne technologies. 
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Product Number: 51217-056-SG
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The most commonly accepted way to protect structural steel on bridges is with liquid applied coatings (paint). The current life expectancy for field-applied protective coatings (maintenance painting) is about 20 years in snow/ice and marine areas. Most bridge owners use a remove-and replace strategy for maintenance painting, with unit costs usually in excess of $10.00 per ft. The cost of maintaining a protective coating during the service life of a bridge may approach the bridge’s original construction costs. 
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