Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1984-05-11
1986-02-04
Van Balen, William J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428209, 4283133, 4283135, 4283139, 521 54, 521 55, 521135, 521178, 528103, 528112, C08G 5922, C08G 5932, C08G 5942, C08J 932
Patent
active
045686033
ABSTRACT:
Fiber-reinforced syntactic foam composites having a low specific gravity and a coefficient of thermal expansion of about 9.0.times.10.sup.-6 in/in/.degree.F. (16.2.times.10.sup.-6 cm/cm/.degree.C.) or less are prepared from a mixture of: a heat curable thermosetting resin comprising an uncured polyglycidyl aromatic amine, a polycarboxylic acid anhydride curing agent, and a chosen curing accelerator; hollow microspheres having a diameter of about 5 to 200 micrometers; and fibers having a length less than or equal to 250 micrometers. These composites are useful for forming lightweight structures for space applications.
REFERENCES:
patent: 2951822 (1960-09-01), Reinking
patent: 3683044 (1972-08-01), Huang et al.
patent: 4141055 (1979-02-01), Berry et al.
patent: 4235974 (1980-11-01), Blount
patent: 4246366 (1981-01-01), Schmid et al.
patent: 4252378 (1981-02-01), De Bolt et al.
patent: 4416926 (1983-11-01), Maglio
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