Inorganic matrix composition and composites incorporating the matrix composition
First Claim
1. An inorganic matrix composition comprising the reaction product of an alkali silicate and/or alkali silicate precursors derived from alkali hydroxides or oxides and a silica source, a reactive glass, water, and optionally a clay and/or oxide filler.
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Abstract
A modified alkali silicate composition for forming an inorganic network matrix. The modified alkali silicate matrix is made by reacting an alkali silicate (or its precursors such as an alkali hydroxide, a SiO2 source and water), an acidic inorganic composition, such as a reactive glass, water and optional fillers, additives and processing aids. An inorganic matrix composite can be prepared by applying a slurry of the modified aqueous alkali silicate composition to a reinforcing medium and applying the temperature and pressure necessary to consolidate the desired form. The composite can be shaped by compression molding as well as other known fabrication methods. A notable aspect of the invention is that, although composite and neat resin components prepared from the invention can exhibit excellent dimensional stability to 1000° C. and higher, they can be prepared at the lower temperatures and pressures typical to organic polymer processing.
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58 Claims
- 1. An inorganic matrix composition comprising the reaction product of an alkali silicate and/or alkali silicate precursors derived from alkali hydroxides or oxides and a silica source, a reactive glass, water, and optionally a clay and/or oxide filler.
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41. A composition comprising the reaction product of water and the following mixture:
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a) 20 to 99.9 wt. % of at least one alkali silicate;
b) 0.01 to 80 wt. % of at least one reactive glass;
c) 0 to 20 wt. % of at least one clay filler; and
d) 0 to 20 wt. % of at least one oxide.
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42. A composition comprising the reaction product of water and the following mixture:
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a) 20 to 99.9 wt. % of at least one alkali silicate or alkali silicate precursor;
b) 0.01 to 80 wt. % of at least one reactive glass;
c) 0 to 20 wt. % of at least one clay filler; and
d) 0 to 20 wt. % of at least one oxide.
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43. A composition comprising the reaction product of water and the following mixture:
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a) 20 to 75 wt. % of at least one SiO2 source;
b) 5 to 40 wt. % of at least one alkali hydroxide;
c) 0.01 to 75 wt. % of at least one reactive glass;
d) 0 to 20 wt. % of at least one clay filler; and
e) 0 to 20 wt. % of at least one oxide.
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- 52. An alkali silicate slurry composition for forming an inorganic polymer network comprising an alkali silicate or a mixture that yields an insitu alkali silicate, a reactive acidic glass, water and operationally a modifier that moderates the gelation of matrix binder suspension and/or a clay and/or oxide filler to enhance physical and thermal properties.
Specification