The Materials of Construction a Treatise for Engineers On the Strength of Engin
The Materials of Construction a Treatise for Engineers On the Strength of Engin
Johnson, J. B. (John Butler), 1850-1902
The book The Materials of Construction a Treatise for Engineers On the Strength of Engin was written by author Johnson, J. B. (John Butler), 1850-1902 Here you can read free online of The Materials of Construction a Treatise for Engineers On the Strength of Engin book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Materials of Construction a Treatise for Engineers On the Strength of Engin a good or bad book?
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941 and that this is the highest of any known oil except castor oil. Tung oil con- sists chiefly of the glycerides of oleic and elaeomargaric acids, the latter acid radicle being Ci 8 H 32 02. Tung oil differs from all the other oils in respect to two rather noteworthy characteristics. When exposed to light in bulk, a flocculent white precipitate is produced, which gradually increases in amount until after some months the oil becomes a solid whitish mass. This change is known as the "light brea...k. " Also, when heated to about 250C. The oil coagulates with the formation of a jelly-like mass. After cooling it is not again made fluid by heating nor by the addition of the ordinary solvents. 298 CHEMISTRY OF MATERIALS This gelatinization is believed to be due to polymerization. It is not due to oxygen absorption. When raw tung oil is brushed out in a thin film, it dries with extreme rapidity in 30 to 50 min. But raw tung oil is not suit- able for paints and varnishes, since its dried film is whitish, opaque and wax-like, without elasticity.
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