Coil coatings, binders

Uses. Chrome yellow pigments are mainly used for paints, coil coatings, and plastics. They have a low binder demand and good dispersibility, hiding power,... 

The converter will operate most efficiently when it supplies coating binder at the same rate as it is consumed. Problems may occur when the converter has to be shut off and flushed with water. Channel flow and vortices during the purge with water affect cleaning time and may make it necessary to sewer starch product. In another converter, a single pump is used to transport the starch through the retention vessel. Jet cookers of the venturi type are placed at the entrance to the vessel and at its exit.114 In an alternative design, a retention coil is used instead of a retention vessel.115... 

Coil coatings are normally applied by roller coating machines, but are sometimes sprayed. The topside of the metal band is normally painted with a primer (DFT ca. 5 pm) and a topcoat (DFT 20-22 pm). Zinc-rich coil coatings are applied with a DFT of 5-20 pm, plastisol films have a DFT of 80-400 pm. The reverse side of the coils is coated with backing coats based on binders, such as alkyd, polyester, and epoxy resins (DFT 8-10 pm). 

The choice of binders for the topcoat depends on the end use of the coil-coated metals. Acrylic topcoats were developed earliest, and are widely used indoors for surfaces that are not exposed to water, chemicals, or mechanical stress. Polyester coil coatings provide a good general-purpose finish, and can be used for a wide range of applications (e.g., car interiors and accessories, caravan exteriors, domestic appliances). Tough, abrasion-resistant, and durable general-purpose finishes can be formulated with polyurethane and polyester resins in combination. 

Uses Binder for wh. and clear interior/exterior can coating systems, stamping enamels, capsule lacquers, foil lacquers, coil-coating primers Features Self-crosslinking exc. resist. good corrosion protection exc. 

Uses Binder for one-pack stoving PU systems for highly flexible primers, intermediate coats, primer surfacers, and thin coil coating primers Properties Thinnable with esters, ketones, aromatic hydrocarbons dens. = 1.10 g/cm vise. 2000 01200 mPa-s-(23 C) flash pt. = 25 C 69 02% NV... 

Uses Binder, film-former in phenolic resin adhesives, printed circuit board coatings, coil coatings, marine paints, metal coatings, barrier primers, barrier coatings, printing inks (screen printing), sealers reactive resin in two-pack systems, e.g., crosslinked with melamine/phenolic resins Features Forms flexible, odorless, tasteless films thru solv. evaporation ... 

Chem. Descrip. Polymethyl methacrylate-based polymer Uses Binder for polyalkyl methacrylate plastisols used for chlorhydric-free coatings for underbody protection, coil coatings, base and top coat coatings, plastics coatings, PVC finishing heat-sealing raw material for pkg. of foods and pharmaceuticals... 

Chem. Descrip. Silicone-modified polyester resin in xylene/cyclohexanone Uses Binder for decorative heat-resist, coatings, e.g., appliance coatings, coil coatings, cookware, bakeware, and industrial coatings in resinous/polymeric food-contact coatings Features Thermal stability to 220 C Regulatory FDA 21 CFR 175.300... 

Uses Solvent in coil, container, and automotive coatings, printing inks, acrylic lacquers, enamels, surf, primers for epoxies and polyesters, paint strippers, foundry core binders, resin cleanup, intermediates, industrial cleaners, wire enamel resins Features Offers VOC compliance, noncorrosive Regulatory DOT nonregulated SARA 302, 313 nonreportable Properties APHA 50 max. sweet odor sol. in alcohols, esters, glycol ethers, halogenated soivs., ketones, hydrocarbons sol. 5.5% in water m.w. 160 sp.gr. 1.086 dens. 9.06 Ib/gal vise. 3.88 cps f.p. -40.2 C b.p. 200-220 C acid no. 0.1 flash pt. (PMCC) 102 C surf. tens. 35.4 dynes/ cm 0.1% max. water content... 

Rakhi et al reported the conducting-polymers (polyaniline [PANI] and PPy)-coated carbon nanocoils (CNCs) as efficient binder-free electrode materials for supercapacitors for the first time, in which the CNCs acted as a perfect backbone for the uniform distribution of the conducting polymers in the composites [16]. Ihe SC and maximum storage energy per unit mass of the composites were found to be comparable to one of the best-reported values for polymer-coated MWNTs. Dumanli et al. prepared the chemically bonded carbon nanofibers (CNFs)-PPy composite via electro-polymerization of Py on CNFs [17]. It showed that the final capacitance values were highly dependent on the number of deposition cycles and deposition rates. The best result for the coiled CNF-PPy composite system was found to be 27.6 C/cm at six times cycling using 25 mV/s. 

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