What are the classifications of putty?

The common name for putty is putty. Used to eliminate smaller surface defects before painting thick slurry paint or paste for mounting glass. Generally add a large number of fillers in the base material (cementitious material), after mixing or grinding and become. Traditionally used tung oil lime, pig's blood plaster, etc., due to poor mechanical properties, easy to cause early cracking and blistering of the coating and gradually eliminated, the main types of commonly used at present are oil, nitro, epoxy, amino, polyurethane, perchloroethylene and unsaturated polyester putty. Commonly used fillers are calcium carbonate, gypsum powder, talcum powder, precipitated barium sulfate and so on. According to the color requirements can also be added to a small amount of pigment. Its performance is good or bad, commonly used indicators of scraping, drying, filling, shrinkage, adhesion, sanding and other aspects of the evaluation, is to determine the overall quality of the coating material is one of the important materials. Putty for mounting glass also requires that it can be rubbed into strips by hand; keep elasticity for a long time, do not contaminate the surface, etc..

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