Inorganic matrix compositions and composites incorporating the matrix composition
First Claim
1. A glass comprising:
- an acidic composition having the formula;
where M is at least one glass former and at least one metallic glass modifier, E is an oxygen, chalcogenide and/or a halogen atom, p is the cation valence of M, q is the anion valence of E, q′
is number of M cations contained in a network unit, p′
is number of E anions contained in a network unit, r is the molar fraction of that network unit, and n is the number of network units or building blocks and ranges from about 2 to about 30.
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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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Citations
20 Claims
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1. A glass comprising:
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an acidic composition having the formula;
where M is at least one glass former and at least one metallic glass modifier, E is an oxygen, chalcogenide and/or a halogen atom, p is the cation valence of M, q is the anion valence of E, q′
is number of M cations contained in a network unit, p′
is number of E anions contained in a network unit, r is the molar fraction of that network unit, and n is the number of network units or building blocks and ranges from about 2 to about 30. - View Dependent Claims (2, 3, 4)
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5. A glass comprising the following formula:
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a(A′
2O)xb(GfO)yc(A″
O)zwhere A′
represents at least one alkali metal glass modifiers, which function as a fluxing agent, Gf represents at least one glass former comprising boron, A″
represents, optionally, at least one glass network modifier, a represents the number of fluxing agents present and ranges from about 1 to about 5, b represents the number of glass formers present and ranges from about 1 to about 10, c represents the number of glass network modifiers and ranges from 0 or about 0.1 to about 30, x represents the mole fraction of fluxing agent and is from about 0.050 to about 0.500, y represents the mole fraction of glass former and is from about 0.040 to about 0.950 with the proviso that the amount of boron as B2O3 is at least about 0.040, z represents the mole fraction of glass network modifiers and is from about 0.000 or about 0.001 to about 0.600, x+y+z=1, and x<
y, and wherein said glass is acidic.- View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
(Li2O)x(P2O5)y1 (B2O3)y2 c(A″
O)z,wherein A″
O is at least one glass network modifier, c is from about 1 to about 30, x is from about 0.050 to about 0.500, y1 is from about 0.030 to about 0.950, y2 is from about 0.010 to about 0.150, z is from about 0.010 to about 0.300, and x+y1+y2+z=1.
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14. The composition of claim 13, wherein A″
- O is magnesium oxide, barium oxide, zinc oxide, silicon oxide, or aluminum oxide, or combinations thereof.
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15. The glass of claim 5, wherein the reactive glass composition comprises the following formula
(LiO)x(P2O5)y1 (B2O3)y2 MgO)z1 (BaO)z2 (Al2O3)z3 where x ranges from about 0.050 to about 0.500, y1 ranges from about 0.030 to about 0.800, y2 ranges from about 0.010 to about 0.700, z1 ranges from about 0.010 to about 0.200, z2 ranges from about 0.010 to about 0.200, and z3 ranges from about 0.010 to about 0.200, x+y1+y2+z1+z2+z3=1 and x< - y1+y2.
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16. The glass of claim 5, wherein the reactive glass composition comprises the following formula
(LiO)x(P2O5)y1 (B2O3)y2 (SiO2)y3 MgO)z1 (BaO)z2 (Al2O3)z3 where x ranges from about 0.050 to about 0.500, y1 ranges from about 0.030 to about 0.800, y2 ranges from about 0.010 to about 0.700, y3 ranges from about 0.010 to about 0.200, z1 ranges from about 0.010 to about 0.200, z2 ranges from about 0.010 to about 0.200, and z3 ranges from about 0.010 to about 0.200, x+y1+y2+y3+z1+z2+z3=1 and x< - y1+y2+y3.
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17. The glass of claim 5, wherein said glass has a pH of less than 7.0.
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18. The glass of claim 8, wherein the glass has a pH of from about 1 to about 5.0.
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19. The glass of claim 14, wherein the glass has a pH of from about 1 to about 5.0.
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20. The glass of claim 16, wherein the glass has a pH of from about 1 to about 5.0.
Specification