Glass products

Standard Terminology of Glass and Glass Products, ASTM Standards 1993, ASTM C162-92, Vol. 15.02, pp. 29—40.H. A. Davies, Phys. Chem. Glasses 17(5), 159 (1976). 

J. Levins, in Glass Production Technology International, Sterling PubHcations Limited, London, 1992, pp. 47—50. 

T. R. Anantharaman, Metallic Glasses Production, Properties and Applications, Trans. Tech. Pubhcations, Switzerland, 1983. 

This article discusses traditional hull ding and construction products, ie, not made from synthetic polymers (see Building materials, plastic), including wood, asphalt, gypsum, glass products, Pordand cement, and bricks. The article presents information about each basic material, the products made from it, the basic processes by which the products or materials are produced, estimates of the quantity or doUar value of the quantities produced or used in the United States, and some pertinent chemical or physical properties related to the material. More detailed chemical and physical property data can be found in articles devoted to the individual materials (see Asphalt Cement Glass Wood). 

Uses of glass in constmction products fit into three categories flat glass (window glass) fibrous glass and specialty glass products. Each is made by different processes and has different appHcations. 

Half of all sodium carbonate is used in glass production. One-fourth is used to make other chemicals and the remainder is used in detergents and paper production (see Alkali and cm ORiNE products, sodium carbonate). 

Manufacture of glass and glass products (furnace department) SOO-1000... 

Two processes, referred to as sputtered and pyrolitic, were developed to produce large volumes of quality, low-e coated glass. Pyrolitic coatings are incorporated into float glass production and tend to be more durable. Sputtered systems use a stand-alone vacuum deposition process to produce coatings that are have lower emissivities but that are softer and need more protection than pyrolitic coatings. 

This process continues until a small speck of silver is created. It is these clusters of silver that absorb the light falling on the glass. The absorption characteristics of the silver specks depend quite critically upon their size and shape. Photochromic glass production is carefully controlled so as to produce a wide variety of shapes and sizes of the silver specks, ensuring that the glass darkens uniformly. 

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