fibrous glass

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fiberglass, fibrous glass, glass fiber

Filaments of glass, formed by pulling or spinning molten glass into random lengths; either gathered in a wool-like mass or formed as continuous thread-like filaments having diameters in the range of 10 to 30 µ m. The wool-like material is processed into many forms of varying densities for use as thermal and acoustical insulation. The continuous-filament type is used for textiles, glass fabrics, and electrical insulation and as reinforcement for other materials.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Copy of 1978 announcement for NBS SRM 1450, Fibrous Glass Board.
Reference [22] records a commercial glass composition for "E-glass," commonly used for commercial applications of fibrous glass (by mass): Si[O.sub.2], 52.9 %; [Al.sub.2][O.sub.3], 14.5 %; [B.sub.2][O.sub.3], 9.2 %; CaO, 17.4%; MgO, 4.4 %; and [K.sub.2]O, 1.0 %.
This difference in ambient pressure, however, has an extremely small effect on the thermal conductivity of fibrous glass board due to its relatively large pore size [7, 16-18, 26].
Appendix J--Addendum on NBS Fibrous Glass Board and SRMs 1450-1450d
This addendum provides supplementary information on the early history of the NBS measurement program for fibrous glass board, selection of the original source material, conversion of the measurement service to become part of the NIST SRM program, and the resulting impact.
x [h.sup.-1] x [ft..sup.-2] x[degrees][F.sup.-1]) for fibrous glass board to 0.16 W x [m.sup.-1] x [K.sup.-1] (1.1 Btu x in.
The first test record for "NBS Fibrous Glass Board" was documented in the hot-plate laboratory logbook on March 11, 1958; the final measurement under the calibration program, November 29, 1977.
The first lot of fibrous glass insulating material, lot 1958, was procured from a commercial source.
At present, respirable fibrous glass is classified as a "possible carcinogen" following 1987 research by LARC in which glass fibers were surgically implanted directly into body cavities, with cancerous tumors as the result.