Wood, Modified definition of Wood, Modified in the Free Online Encyclopedia.

Wood, Modified

wood that has been processed by some chemical substance (synthetic resin, ammonia, and so on) to improve its mechanical properties and impart water resistance to it. In most cases the wood is impregnated under pressure; polymerization or polycondensation of the chemical substances introduced into the wood (mers, oligomers, and others) is brought about by heat treatment or by irradiation with X rays and alpha, beta, and gamma rays in the presence of catalysts. Modified wood has 75 percent greater resistance to static bending than natural wood; it absorbs 3-5 times less water and is less susceptible to abrasive wear by a factor of 1.5-2.0. Modified wood is used to manufacture sliding bearings in units of farm machinery, parts that operate in aggressive mediums, and casting patterns and master forms.

REFERENCES

Rogovin, Z. A. Khimicheskie prevrashcheniia i modifikatsiia tselliulozy. Moscow, 1967.
Modifikatsiia drevesiny (collection of articles). Riga, 1967.

A. KALNIŅŠ

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Wood's filter
Wood's filter
Wood's filter
Wood's glass
Wood's lamp
Wood's light
Wood's light
Wood's light
Wood's light
Wood's metal
Wood's metal
Wood, Anthony
Wood, as a medium
Wood, as a medium
Wood, as a medium
Wood, Beatrice
Wood, Benjamin
Wood, Bryce
Wood, Clement
Wood, Defects of
Wood, Devolson
Wood, Edith Elmer
Wood, Edward Frederick Lindley
Wood, Fernando
Wood, Grant
Wood, Harland G.
Wood, Henry Joseph
Wood, Jethro
Wood, John
Wood, Leonard

Wood, Modified

Wood, Mrs Henry
Wood, Mrs Henry
Wood, Mrs Henry
Wood, Mrs. Henry
Wood, Natalie
Wood, Natalie
Wood, Natalie
Wood, Nicholas
Wood, Paper, Agriculture, Other
Wood, Pressed
Wood, Robert E.
Wood, Robert W.
Wood, Robert Williams
Wood, Sarah
Wood, Sir Henry (Joseph)
Wood, Sir Henry (Joseph)
Wood, Sir Henry (Joseph)
Wood, Willy
Wood, Wire and Metal Lathers' Union
wood-and-water joey
Wood-ash soap
Wood-ash soap
Wood-ash soap
Wood-Based Composites Center
Wood-Based Panel
Wood-Bending Machine
Wood-block print
Wood-block print
Wood-block print
Wood-block printing