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Paint and Protective Coatings
Published in Ryan Cruzan, Manager’s Guide to Preventive Building Maintenance, 2020
Latex paint dries in minutes and can be recoated in only four hours. Latex paint also retains its color better than oil-based paint and resists yellowing better than oil-based paints. With proper surface preparation, latex paint can be applied over oil-based paint but not the other way around. Latex paint is also easier to apply as it is less sticky than oil-based paint and flows and spreads easier and is easily cleaned up with soap and water.
Ferrous and non-ferrous metals
Published in Arthur Lyons, Materials for Architects and Builders, 2019
Paint is normally applied in three coats. The primer adheres to the cleaned surface and gives corrosion protection, the second coat builds up thickness, and the finishing coat provides protection from the environment and the required aesthetic finish. The standard BS EN ISO 12944-2: 2017 gives guidelines on the suitability of a range of paint systems in relation to environmental conditions and durability.
Atmospheric Corrosion
Published in Mavis Sika Okyere, Corrosion Protection for the Oil and Gas Industry, 2019
Anti-rust primer/zinc coating shall be used to coat any rusty area hard to reach by powder brush, but make sure loose rust is removed by sandpaper before primer application. After that, use clean rag or cloth to remove the foreign matter from the surface before applying the paint/coating.
Bio-Based Composite Footbridge: Design, Production and In Situ Monitoring
Published in Structural Engineering International, 2019
Rijk Blok, Joris Smits, Rafail Gkaidatzis, Patrick Teuffel
Concerning the protection of the composite laminate from moisture, UV light and other harmful environmental factors, the application of a layer of coating has been essential. Paint typically consists out of solvent, pigment, resin (binder) and additives. Negative environmental impact of paint is mostly linked with the emission of volatile organic compounds (VOCs) during the drying phase, causing excessive formation of ozone, a highly toxic component which increases human health risks. To reduce these harmful emissions, less-VOC or no-VOC products are currently becoming available in the market.
Zn bio extraction from a zinc rich paint sludge by indigenous Pseudomonas aeruginosa
Published in Chemical Engineering Communications, 2022
Fatemeh Honarjooy Barkusaraey, Roya Mafigholami, Mohammad Faezi Ghasemi, Gholam Khayati
Automotive production leads to the production of many different types of waste. The main source of hazardous vehicle waste is the painting process, which produces paint sludge. There are two common paint types, water-based (mostly used in base coats) and solvent-based (usually applied in clear coats). To wash the overspray paint, circulating water is passed through a grating system that collects in a sludge pool, containing a mixture of water and overspray paint called paint sludge. The production of each car generates approximately 1.5–5 kg of paint sludge (Salihoglu et al. 2018). About 2555–4380 tons of paint sludge (containing toxic components with organic, mineral, heavy metal, or BTEX origins) is produced annually (Khezri et al. 2013; Ghomi Avili et al. 2018). Paint sludge is classified as a hazardous material with the EU waste code of 080113* due to its solvent content, low flashpoint, heavy metal pigments, ignitability, toxicity, and ecotoxicity. According to EU legislation, it cannot be deposited in landfills because of its abundance of total organic carbon and dissolved organic carbon. Due to plating, pigments, and the manufacturing process, the heavy metals in paint cause surface and groundwater pollution. Therefore, their bioaccumulation properties should be removed before entering the environment (Saleh 2016). Nowadays, paint sludge is incinerated in cement kilns for energy recovery. Several studies have been performed to convert paint sludge into useful by-products in order to find alternative disposal methods to landfills or incineration (Salihoglu and Salihoglu 2016). Paint sludge can ideally be recycled into paints or be used in the making of bricks, building materials, sealants, plastic parts (Kulkarni et al. 2016), and ceramics (Nakouzi et al. 1998). Utilizing the pyrolysis process, activated carbon can be produced from paint sludge (Kim et al. 1996). Paint sludge can also be recycled into biogas and methanol (Salihoglu et al. 2018). Moreover, titanium, a valuable metal, can be extracted from the titanium dioxide in paint sludge by the digestion and centrifugation method (Khezri et al. 2013). Research is being conducted to reduce the generation of paint sludge by increasing efficiency, reducing coating layers, and introducing new advanced formulations (Salihoglu and Salihoglu 2016). Several methods, such as solidification and encapsulation, are used to prevent the spread of metals in paint sludge. More recently, biological treatment has been suggested (Ghomi Avili et al. 2018).