Products Finishing

NOV 2013

Products Finishing magazine is the No. 1 industrial finishing publication in the world. We keep our readers informed about the latest news and trends in plating, painting, powder coating, anodizing, electrocoating, parts cleaning, and pretreatment.

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Page 29 of 59

POWDER The Million Dollar Bridge project led to more work from concern from federal agencies regarding the toxicity of coal other state agencies, and in 1989, Lane Coatings added a tar epoxy and epoxy polyamide coatings in use at the time, 35,000-sq-ft building to house a new custom coating line. In especially because the products were using a mixture of 1995, it converted the second rebar line to custom coatings. resins, coal tar pitch, an accelerator, solvents and rheological Fusion-bonded epoxy (FBE) modifiers. has been around since the "While each of the components has The big push to get more powder 1960s, used mainly in the associated hazards, coal tar pitch may coating used in the construction pipeline industry because of be especially hazardous," the USACE projects will come about when its corrosion protection propresearchers wrote in 1995. "Coal tar erties. The coating is called pitch volatiles are a confirmed human FBE epoxy coatings get specifed fusion-bonded because of a carcinogen as well. While most organic into projects by the engineers chemical reaction that causes coating materials are far from benign, and regulatory agencies that a cross-linking of the resins these two factors warrant the investiin the powder coating, which gation of alternative technologies to oversee most of the road, bridge prevents the movement of the replace or supplement the use of Corps and building projects in the U.S. components once the reaction of Engineers paint specifications." has taken place. With those warnings in hand, the While not used extensively, FBE powder coatings have researchers also found that FBE powder coatings performed received the endorsements of civil and architectural engiextremely well—if not better—in testing in soil, ocean water neers, as well as a rave review from the U.S. Army Corps of and atmospheric conditions. Engineers (USACE), who issued a report as far back as 1995 "The better-performing FBE coatings may be expected stating that the coatings had "excellent barrier properties." to provide similar levels of corrosion protection in immersion and atmospheric exposure in comparison with standard Corps systems," the report said, adding that "the Coal Tar Epoxy Toxicity FBE coatings have superior resistance to impact damage. One of the reasons for the USACE study was continued Coatings that are more resistant to impact damage may A guide rail at Colonial Williamsburg Visitor exhibit superior long-term performance." Center in Virginia was galvanized prior to being And that is exactly the message Lane's Anderson, Strohm coated by Lane with super-durable polyester. and Hinkelman have been delivering through the Northeast region of the U.S., meeting with state and local agencies about getting FBE into more projects, and hopefully replacing coal tar as the coating of choice. Research Data Anderson held several lunch meetings with groups of engineers and government regulators, all to show them how his shop in Carlisle could provide a better product. Anderson also worked with his suppliers to get real data to show the gathered masses, and that research had to show that FBE coatings would last just as long and perform as well as what they had been using. Lane Coatings partnered with 3M on a study of a project they collaborated on in the Bahamas, where "Z piles" coated by Lane with 3M's Scotchkote FBE powder coating were used, the first time piles were coated with 3M's dual-coat system of Scotchkote 226N/6352. Anderson says that Lane applied a nominal thickness of about 15 mils of Scotchkote 226N and 25 mils of Scotchkote 6352 to the Z piles, which are heavy-gauge, ¾- to 1-inch or greater steel piles in the shape of a Z, usually about 20-30 28 NOVEMBER 2013 —

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