Fluoro-oxidation makes wood-plastic paintable.Treating the surface of wood-plastic composite Wood-plastic composite is a composite material lumber or timber made of recycled plastic and wood wastes. There are also application in the market, which utilize only virgin raw materials. (WPC WPC (in Britain) woman police constable WPC (Brit) n abbr (= woman police constable) → Polizistin f WPC n abbr (BRIT ) boards with fluorine fluorine (fl  `ərēn, –rĭn), gaseous chemical element; symbol F; at. no. 9; at. wt. 18.998403; m.p. −219.6°C;; b.p. −188.14°C;; density 1. gas in the presence of oxygen oxidizes the surface so that ordinary paints and primers adhere as they do to natural wood. Typical fluorination fluor·i·na·tion n. A chemical reaction that introduces fluorine into a compound. is done in the absence of oxygen to impart barrier properties. But Fluoro-Seal International L.P. in Houston discovered that fluorination with oxygen creates oxidation. Paint adhesion was measured by the ASTM ASTM abbr. American Society for Testing and Materials cross-hatch adhesion test. Nontreated WPC lumber had adhesive bond strength of 72 g/[cm.sup.2] vs. 182 g/[cm.sup.2] for the treated sample. (Photos show paint flaking paint off the untreated sample but adhering well to the treated sample.) Fluoro-Seal is working with WPC technology company Strandex Corp. of Madison, Wis., to develop continuous off-line treatment and priming of wood-HDPE products for market testing. Reacted fluorine gases are removed after use by scrubbing with activated alumina. FluoroSeal: (281) 571-1440 * PTDirect: 583SX [ILLUSTRATION OMITTED] |
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