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Controlling the relative humidity of air helps to reduce hydrolysis reactions and minimises cracking, distortion and other physical changes in hygroscopic materials. Changes in temperature will also bring about changes in relative humidity. Therefore, the conservation profession has placed great importance on controlling indoor environments.
Low-VOC paint types include latex (water-based), recycled latex (water-based), acrylic, and milk paint. [1] [2] The labels of paint cans can be checked for the following information: To be considered low-VOC, the paint should contain <50 g/L of VOC. [citation needed] To be considered zero-VOC, the paint should contain <5 g/L of VOC. [citation ...
Acrylic paintings require attentive preventive care. Due to the soft nature of the paint, it attracts and holds dirt and debris, creating difficulty when cleaning and resulting in darkening colors over time. Due to the characteristic of acrylic paint, varnishes will diminish top layers of the paint and affect the colors' vibrancy.
Using a removal tool, a sort of awl, the painting and the intonachino attached to the cloth and glue covering are then detached, from the bottom up. The back of the fresco is thinned to remove excess lime and reconstructed with a permanent backing made from two thin cotton cloths, called velatini, and a heavier cloth with a layer of glue.
The chemical will still be available for certain purposes, but with new guidelines meant to keep workers safe. EPA implements toughest restrictions yet on use of highly toxic chemical in paint ...
Whitewash, calcimine, kalsomine, calsomine, asbestis or lime paint is a type of paint made from slaked lime (calcium hydroxide, Ca(OH) 2) or chalk (calcium carbonate, CaCO 3), sometimes known as "whiting". Various other additives are sometimes used.
The Environmental Protection Agency said Tuesday it has finalized a ban on consumer uses of methylene chloride, a chemical that is widely used as a paint stripper but is known to cause liver ...
There are three main methods, typically referred to by their Italian terms, namely stacco a massello, involving detachment and removal of painting, render, and some or all of the mural support; stacco or detachment of the painting with render alone; and strappo, lit. "tearing", lifting of only the paint layer, attached to a facing with adhesive ...