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The conservation and restoration of lacquerware prevents and mitigates deterioration or damage to objects made with lacquer. The two main types of lacquer are Asian, made with sap from the Urushi tree, and European, made with a variety of shellac and natural resins. Lacquer can be damaged by age, light, water, temperature, or damaged substrate.
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.
The conservation-restoration of panel paintings involves preventive and treatment measures taken by paintings conservators to slow deterioration, preserve, and repair damage. Panel paintings consist of a wood support, a ground (linen or parchment sized with glues , resin , and gesso ), and an image layer ( encaustic , tempera , oil ). [ 1 ]
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 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]
Mohie et al.'s experiment tested control groups of traditional lining materials against a polyeurethane compound. Following a structural analysis of the data results, a previously restored painting was relined with this new material. The previous conservation efforts were safely removed and the back of the artwork was secured to a workspace.
A machine oil stain could also contain traces of metal, for example. [1] Also of concern is the color of the material that is stained. Some stain removal agents will not only dissolve the stain, but will dissolve the dye that is used to color the material.
The supporting fabric can be removed by rolling it out from under the textile item as it is laid out on the glass, bit by bit. This can stress the fibres: this method cannot be used on any old textile that is likely to be damaged by the handling. Such fabrics are allowed to dry first, then lay them on the glass and wet them in place.
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