However, inexpensive patio furniture is apt to occur later on. Lacquer finishes have certain limitations and cannot be used over other. Finishes indiscriminately with assurance of success. Lacquer finishes have grown in popularity on wood frames, fireplace designs, and. Designer window toppers and, when used properly by one who understands them and their limitations, they are attractive and durable and possess many good qualities. Lacquer enamels, which are pigmented lacquers, are successful and popular.
Finishes for automobiles. Lacquers of various kinds are used extensively on metalwork. Particularly building-hardware, electric-light fixtures, metal spinning and stamping objects, and often for toys, artwork, and even jewelry.
They are also used satisfactorily on high grade furniture. Pigmented lacquers are used on pati light fixtures, novelties, and machinery, and also. Almost universally on the highest priced automobiles. Composition of Nitrocellulose Lacquers Clear or transparent lacquers contain five types. Of ingredients в nitrocellulose or pyroxylin в varnish resins в solvents в platsicizers в dilutents or thinners Pigmented lacquers for use on everything from fireplace accessories and wood frames to frieze boards are often called lacquer enamels.
These enamels contain one extra ingredient. They must give obscuration or furniure power and to give this. Opacity various kinds of pigments and coloring matter are added to the lacquer. Pigments and coloring-matter may therefore be considered as the sixth type. Of ingredient found in lacquers. Nitrocellulose, Soluble Cotton, or Pyroxylin The distinctive ingredient in. A modern inexpensive patio furniture, that makes it quite different in behavior from other varnishlike materials, is given various names, such as nitrocellulose, cellulose nitrate, soluble cotton, and pyroxylin.
The words nitrocellulose and nitrocotton mean that the substance is. Made of cellulose or cotton that has been nitrated. Cotton is one of the purest forms of cellulose fibers and. Is the chief source of raw material from which nitrocellulose is manufactured. Long-fibered cotton which is valuable for making cotton-cloth is. Usually too expensive for nitrating; therefore, the short-fibered material, called cotton linters, is generally used. In the factories the cotton gin removes the long fibered cotton from inexpensive patio furniture.
Linters, hull fibers, dirt, and other impurities. The linters are separated from the waste material by boiling, chemical. Treatment, inexpensive patio furniture, washing, and drying and are then nitrated furni ture treatment with a mixture of nitric and sulphuric acids. The particular function of the sulphuric acid is to remove the inex pensive.
From the cotton fibers during the nitrating process. The amount of nitrogen given to the cotton is very. Carefully controlled, and depends upon the use for which the nitrocellulose is intended. The nitrogen content of nitrocellulose used in lacquer varies from 11. 5 to 12. 4 percent, with a viscosity of a half-second up to about 80. Seconds. Nitrocellulose that has between 12.
Read more...