The adhesive is a "magic" substance from which most of us have to do since childhood. Two pieces of paper just slightly rubbed, sewn together, and after a few or several minutes, they can not be separated now. Adhesive glue uneven, and probably many people would be surprised what can permanently join materials produced in the latest technologies. The basic parameters that characterize all the glues, is their viscosity, open time, setting time and the base and solids. The first describes the attributes of internal resistance against the go by. It is in large part determines whether the glue is more liquid or a solid consistency. Opening time is a different period in which the substance retains its adhesive properties when applied to the aggregate surface. The period of "drying" or harden the adhesive is its setting time. NASA is nothing but the components of an adhesive, a solid is the amount of dry matter in the unit volume. The adhesive can be of natural origin (obtained from plants or even animal bone meal), or synthetic. The latter, due to the much greater durability of the merger, are widely used in industry.
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