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Consolidants used can include Asian lacquer or other synthetic or organic adhesives such as animal glue or Paraloid B-72. [16] Adhesives can be thinned with solvents in order to be wicked beneath layers of lifting lacquer or into cracks and allowed to dry while securing the loose area in place.
A widely used old adhesive that is orange or very dark brown in appearance. Once dried, the adhesive is very hard and becomes increasingly more brittle over time. Shellac does not break down easily with commercially available products. Additionally, the resin has naturally-occurring dyes that can stain ceramic pink or black.
Wallpaper pastes have a typical shear thinning viscosity and a high wet adhesive tack. [citation needed] These properties are needed to slow down the penetration of the adhesive into the paper and wall, and give slow bonding speed which gives the wallpaper hanger time to line up the wallpaper correctly on the wall. The adhesive is usually sold ...
Lacquer is susceptible to cracks and loose joins from fluctuating temperatures and relative humidity. Extended exposure to light can also cause lacquer to lose its durability. [39] Over exposure can also cause discoloration and loss of lustre. Avoiding exposure to unfiltered daylight and fluorescent lamps can help to prevent this type of damage.
Stain-blocking primers are used to cover stains such as watermarks, nicotine (actually tar), markers, smoke, and prevent them bleeding through newly applied layers of paint. They also provide adhesion over problematic surfaces, giving better film leveling, and durability. Commonly used stain-blocking paints include acrylic and alkyd.
Primer reduces the number of paint coats needed for good coverage and even color. A thin layer of paint may still be permeable to water. Water can permeate into the wood and cause warping, mildew, or dry rot. Primer improves the waterproofing of the finish. [4] Primers are not used as part of a wood stain treatment because they obscure the wood ...
Fielding notes that a number of different types of adhesives may be used in this process. Glue paste, beeswax, strong copal varnish, or a glue made from pounded cheese are all listed as acceptable materials to coat the back of the artwork with. [6] The main benefits of a pounded cheese-based paste is its water-resistance.
Lacquer is applied to a surface that has been cleaned with ethanol, acetone, or methyl ethyl ketone. Oils from human hands prevent the lacquer from adhering to the silver. Agateen No. 27 (cellulose nitrate) and Paraloid B-72 are the most commonly used lacquers however there is a debate which lacquer, cellulose nitrate or acrylic, is best. [10]