ABRASION
The wearing away of a solid surface or coating material by friction.
The wearing away of a solid surface or coating material by friction.
A hard substance used for grinding, air blasting and polishing. Common abrasives used in restoration include sand, pumice, ground corn cobs, nut hulls, and baking soda, dry ice and glass beads.
The use of compressed air with an abrasive medium to grind away surface discolorations, accretions, chars or fire residues.
The use of an abrasive to remove residues without damaging the surface.
The ratio of the mass of water vapour to the mass of dry air; humidity ratio.
To take or draw within, usually resulting in a physical change of the absorbing material.
A material that draws liquid or gaseous substances into itself, usually from surfaces or from the air.
The process by which a liquid or gas is drawn into a porous solid material.
Any chemical that undergoes dissociation in water with the formation of hydrogen ions. Its properties include the ability to react with bases or alkalis to form _salts._
An anionic naphthalene phenol compound used to balance the cationic polarity of the amine groups at the ends of nylon polymers (to block open dye sites), thereby reducing or eliminating the affinity between the fibre and foreign acid based dyes