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Carbon pigment12/8/2023 ![]() Lippok-Lohmer (Farbe + Lack, (1986), vol. The grey number G Y and the undertone dG of the tinted (grey) coatings were obtained following the same mathematical transformations used to calculate M Y and dM. Jetness M Y and the undertone dM for the black mass tones were determined in accordance to DIN 55979. The coloristic properties of the coated panels were measured using a Pausch ® Q35 with a 45°/0° geometry. TABLE 7 » Process parameter used for carboxyl-functional polyester powder coating/TGIC crosslinker. TABLE 6 » Process parameter used for epoxy-hybrid and carboxyl-functional polyester/HAA system. Tables 6 and 7 illustrate the process parameters and instrument used in the experiments. TABLE 5 » Formulation 5:carboxyl-functional polyester system / TGIC crosslinker - tinting, grey tone. TABLE 4 » Formulation 4: carboxyl-functional polyester system/TGIC crosslinker - mass tone. TABLE 3 » Formulation 3: carboxyl-functional polyester system/HAA crosslinker - tinting, grey tone (OH:COOH = 1:1, TiO 2:specialty carbon black = 100:5). TABLE 2 » Formulation 2: carboxyl-functional polyester system/HAA crosslinker - mass tone (OH: COOH = 1:1). TABLE 1 » Formulation 1: epoxy hybrid system - mass tone. Tables 1-5 show the various formulations used in this study. The effects of different particle sizes, forms (powder or bead), and loading levels of carbon black on colorimetric properties in various powder coating resin systems were carefully investigated. In this study, different grades of furnace black, gas black, and lamp black were examined. The five different processes generate five basic types of carbon black: gas black, furnace black, acetylene black, thermal black, and lamp black. Orion produces more than 280 specialty carbon black grades, using five manufacturing processes plus after-treatment. In this study, the hybrid system, and the polyester with both HAA (hydroxyalkylamide) and TGIC (triglycidylisocyanurate) curing agents were tested along with various types of our carbon blacks. Depending on the needs and the requirements of the application, the ratio of epoxy/polyester can be varied. Epoxy and polyester are often mixed together to form hybrid systems. ![]() They also provide an enormous choice of colors, gloss levels, and special effects 2. They provide good mechanical and chemical resistance. The saturated polyesters exhibit better outdoor weathering properties and are the most commonly used in powder coatings. However, epoxies do not weather well, and exterior exposure can cause them to chalk or fade. Epoxies are the preferred systems, if durability, chemical and corrosion resistance, ease of use, and a wide range of cure schedules are required. Currently, most industrial powder coating formulations are based on thermoset resin technology, which predominantly comprises epoxies and saturated polyester types with carboxyl or hydroxyl functional groups. ![]()
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