High heat distortion resistant inorganic laminate

• US 20080063875A1
• Filed: 10/30/2007
• Published: 03/13/2008
• Est. Priority Date: 09/20/2000
• Status: Abandoned Application

• Current Assignee: Goodrich Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Goodrich Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Robinson, John, Cartwright, Craig, Mazany, Anthony
• Application Number:
  US11/978,920
• Publication Number:
  US 20080063875A1
• Time in Patent Office: Days
• US Class Current: 428/426
• CPC Class Codes: B32B 1/08 Tubular products
• CPC Class Codes: B32B 15/02 Layer formed of wires, e.g. mesh
• CPC Class Codes: B32B 15/18 comprising iron or steel B32B15/011, B32B15/012 and B32B15/013 take precedence
• CPC Class Codes: B32B 17/02 in the form of fibres or filaments
• CPC Class Codes: B32B 5/18 characterised by features of a layer of foamed material
• CPC Class Codes: B32B 5/26 another layer next to it also being fibrous or filamentary relative arrangement of fibres or filaments of different layers B32B5/12
• CPC Class Codes: C09K 21/02 Inorganic materials

Abstract

A light-weight, heat distortion resistant laminate includes at least one layer of an alkali silicate resin composition derived from an alkali silicate and/or alkali silicate precursor, at least one oxoanionic compound or a reactive acidic glass; and water; and at least one reinforcing core layer comprising an inorganic high-temperature resistant composition. The laminate has a very low quench steepness index value upon rapid quenching as with ambient temperature water.

Claims

1. A heat-quench distortion resistant laminate, comprising:

at least one layer of an alkali silicate inorganic resin composition wherein said inorganic resin composition comprises a) the reaction product of an alkali silicate or alkali silicate precursors derived from an alkali hydroxide or oxide and a silicate source, or combinations thereof, one or more non-silicate oxoanionic compounds optionally including at least one phosphorus compound, water, optionally one or more compounds containing one or more multivalent cations comprising Groups 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, or 16 of the periodic table or any combination thereof, and optionally a clay or an oxide filler or both;

or b) the reaction product of an alkali silicate or alkali silicate precursors derived from an alkali hydroxide or oxide and a silicate source, or any combination thereof, a reactive acidic glass, water, and optionally a clay or an oxide filler or both;

or c) the reaction product of an alkali silicate or alkali silicate precursors derived from an alkali hydroxide or oxide and a silicate source, or combinations thereof, one or more non-silicate oxoanionic compounds optionally including at least one phosphorus compound, a reactive acidic glass, water, optionally one or more compounds containing one or more multivalent cations comprising Groups 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, or 16 of the periodic table or any combination thereof, and optionally a clay or an oxide filler or both; and

at least one core layer, said core layer comprising an inorganic composition having a thermal resistance of at least about 640°

C.; and

said laminate having a quench steepness index value of about 2% or less in a lateral direction according to modified ASTM Test A 1030/A 1030M-05.

2. A heat-quench distortion resistant laminate according to claim 1, wherein said quench steepness index value is based upon cooling the laminate from a temperature of about 640°

C. in about 22°

C. water.

3. A heat-quench distortion resistant laminate according to claim 2, wherein said alkali silicate, independently, comprises potassium silicate, sodium silicate, crystalline sodium silicate, crystalline potassium silicate, amorphous sodium silicate, amorphous potassium silicate, or lithium silicate, or any combination thereof,

wherein said at least one core layer contains one or more air spaces therein,

wherein each said at least one alkali silicate inorganic resin layer, independently, has a thermal resistance of at least about 700°

C., and

wherein said quench steepness index value is 1% or less.

4. A heat-quench distortion resistant laminate according to claim 3,

wherein said at least one alkali silicate inorganic resin layer, independently, includes a reinforcing material, wherein said reinforcing material, independently, comprises at least one fiber, sheet, screen, or mesh, or any combination thereof;

and

wherein said at least one core layer, independently, comprises an aluminum silicate, aluminosilicate, alumina, alkali aluminum silicate, refractory material, ceramic, metal phosphate, aluminate, magnesium, zirconia, silica, or titania, or any combination thereof.

5. A heat-quench distortion resistant laminate according to claim 4, wherein said alkali silicate, independently, comprises potassium silicate, sodium silicate, calcium silicate, or lithium silicate, or any combination thereof, wherein said reinforcing fibers of said alkali silicate inorganic resin layer, independently, comprise a nickel fiber, glass fiber, carbon fiber, graphite fiber, mineral fiber, oxidized carbon fiber, oxidized graphite fiber, steel fiber, metallic fiber, metal-coated carbon fiber, metal-coated glass fiber, metal-coated graphite fiber, metal-coated ceramic fiber, nickel-coated graphite fiber, nickel-coated carbon fiber, nickel-coated glass fiber, quartz fiber, ceramic fiber, aluminosilicate fiber, silicon oxycarbide fiber, titanium fiber, nickel alloy fiber, stainless steel fiber, brass-coated steel fiber, ceramic-coated carbon fiber, ceramic-coated graphite fiber, ceramic-coated glass fiber, aramid fiber, basalt fiber, alkaline resistant glass fiber, E-glass fiber, S-glass fiber, SiC fiber, or a BN fiber, or any combination thereof;

and optionally including polymeric fibers, polymer-coated carbon fibers, polymer-coated graphite fibers, polymer-coated glass fibers, polymer-coated aramid fibers, or oxidized polyacrylonitrile fibers, or any combination thereof;

wherein said at least one alkali silicate inorganic resin layer and said at least one core layer, independently, have a thermal resistance of at least about 800°

C., and

wherein said laminate has a quench steepness index value of about 0.5% or less.

6. A heat-quench distortion resistant laminate according to claim 5, wherein said at least one alkali silicate inorganic resin layer reinforcing fiber, independently, comprises a high Tg glass fiber, mineral fiber, carbon fiber, ceramic fiber, silicon oxycarbide fiber, aluminum silicate fiber, graphite fiber, basalt fiber, stainless steel fiber, titanium fiber, nickel alloy fiber, aramid fiber, SiC fiber, or a BN fiber, or any combination thereof;

wherein said at least one alkali silicate-inorganic resin layer and said at least one core layer, independently, have a thermal resistance of at least about 900°

C.;

wherein said at least one core layer optionally contains reinforcing fibers, wherein said at least one core layer containing an air space, independently, comprises a honeycomb structure, a corrugated or undulating structure, a pillar structure, a foam, a cellular material, or a fiber mat or blanket, or any combination thereof; and

wherein said laminate has a quench steepness index value of about 0.5% or less.

7. A heat-quench distortion resistant laminate according to claim 6, wherein said alkali silicate is sodium silicate,

wherein said at least one core layer, independently, comprises a silicon carbide fiber mat or blanket, an aluminosilicate fiber mat or blanket, or an alumina fiber mat or blanket, or any combination thereof, and

wherein said laminate has a quench steepness index value of about 0.2% or less.

8. A heat-quench distortion resistant laminate of claim 1, wherein said alkali silicate inorganic resin composition is said a) composition;

wherein said oxoanionic compound, independently, comprises boric acid, phosphoric acid, sulfuric acid, sodium dihydrogen phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, ammonium hydrogen phosphate, metallic or nonmetallic phosphate salts or combinations thereof, compounds incorporating borate, sulfate, aluminate, vanadate, or germanate, or any combination thereof; and

wherein said optional multivalent cations, independently, comprise magnesium, calcium, zinc, aluminum, or titanium, or any combination thereof.

9. A heat-quench distortion resistant laminate of claim 4, wherein said alkali silicate inorganic resin composition is said a) composition;

wherein said oxoanionic compound, independently, comprises boric acid, phosphoric acid, sulfuric acid, sodium dihydrogen phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, ammonium hydrogen phosphate, metallic or nonmetallic phosphate salts or combinations thereof, compounds incorporating borate, sulfate, aluminate, vanadate, or germanate, or any combination thereof; and

wherein said optional multivalent cations, independently, comprise magnesium, calcium, zinc, aluminum, or titanium, or any combination thereof.

10. A heat-quench distortion resistant laminate of claim 7, wherein said alkali silicate inorganic resin composition is said a) composition;

wherein said oxoanionic compound, independently, comprises phosphoric acid, boric acid, sulfuric acid, or potassium dihydrogen phosphate, or any combination thereof;

wherein said cations, independently, comprise potassium, magnesium, calcium, zinc, aluminum, or titanium, or any combination thereof.

11. A heat-quench distortion resistant laminate of claim 1, wherein said alkali silicate inorganic resin composition is said b) composition;

wherein said reactive acidic glass comprises a compound of the formula

a(A′

₂O)_xb(G_fO)_yc(A″

O)_z

where A′

represents at least one alkali metal glass modifiers that functions as a fluxing agent, G_f represents at least one glass formers, A″

represents, optionally, at least one glass network modifier, a represents the number of fluxing agents present and ranges from 1 to about 5, b represents the number of glass formers present and ranges from 1 to about 10, c represents the number of glass network modifiers and ranges from 0 to about 30, x represents the mole fraction of fluxing agent and is between about 0.050 and about 0.150, y represents the mole fraction of glass former and is between about 0.200 and about 0.950, z represents the mole fraction of glass network modifiers and is between 0.001 and about 0.500, x+y+z=1, and x<

y, wherein A′

comprises lithium, sodium, potassium, rubidium, or cesium, wherein G_f comprises boron, silicon, phosphorus, sulfur, germanium, arsenic, antimony, aluminum or vanadium, and wherein A″

O is at least one metallic glass modifier and comprises vanadium oxide, titanium oxide, zinc oxide, lead oxide, aluminum oxide, zirconium oxide, lanthanum oxide, cerium oxide, neodymium oxide, magnesium oxide, calcium oxide, strontium oxide, barium oxide, or silicon oxide, or any combination thereof.

12. A heat-quench distortion resistant laminate according to claim 6,

wherein said alkali silicate inorganic resin composition is said b) composition;

wherein said reactive acidic glass, independently, comprises a borophosphosilicate, phosphate, phosphoborate, borophosphate, or a borate glass, or any combination thereof.

13. A heat-quench distortion resistant laminate according to claim 1, wherein said alkali silicate inorganic resin composition is said c) composition;

wherein said reactive acidic glass comprises a compound of the formula

a(A′

₂O)_xb(G_fO)_yc(A″

O)_z

where A′

represents at least one alkali metal glass modifiers that functions as a fluxing agent, G_f represents at least one glass formers, A″

represents, optionally, at least one glass network modifier, a represents the number of fluxing agents present and ranges from 1 to about 5, b represents the number of glass formers present and ranges from 1 to about 10, c represents the number of glass network modifiers and ranges from 0 to about 30, x represents the mole fraction of fluxing agent and is between about 0.050 and about 0.150, y represents the mole fraction of glass former and is between about 0.200 and about 0.950, z represents the mole fraction of glass network modifiers and is between 0.001 and about 0.500, x+y+z=1, and x<

y, wherein A′

comprises lithium, sodium, potassium, rubidium, or cesium, wherein G_f comprises boron, silicon, phosphorus, sulfur, germanium, arsenic, antimony, aluminum or vanadium, and wherein A″

O is at least one metallic glass modifier and comprises vanadium oxide, titanium oxide, zinc oxide, lead oxide, aluminum oxide, zirconium oxide, lanthanum oxide, cerium oxide, neodymium oxide, magnesium oxide, calcium oxide, strontium oxide, barium oxide, or silicon oxide, or any combination thereof.

14. A heat-quench distortion resistant laminate according to claim 4, wherein said alkali silicate inorganic resin composition is said c) composition;

wherein said reactive acidic glass, independently, comprises a borophosphosilicate, phosphate, phosphoborate, borophosphate, or a borate glass, or any combination thereof,

wherein said oxoanionic compound, independently, comprises boric acid, phosphoric acid, sulfuric acid, sodium dihydrogen phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, ammonium hydrogen phosphate, metallic or nonmetallic phosphate salts or combinations thereof, compounds incorporating borate, sulfate, aluminate, vanadate, or germanate, or any combination thereof; and

wherein said optional multivalent cations, independently, comprise magnesium, calcium, zinc, aluminum, or titanium, or any combination thereof.

15. A heat-quench distortion resistant laminate according to claim 6, wherein said alkali silicate inorganic resin composition is said c) composition;

wherein said reactive acidic glass, independently, comprises a borophosphosilicate, phosphate, phosphoborate, borophosphate, or a borate glass, or any combination thereof,

wherein said oxoanionic compound comprises, independently, phosphoric acid, boric acid, sulfuric acid, or potassium dihydrogen phosphate, or any combination thereof;

wherein said cations, independently, comprise magnesium, calcium, zinc, aluminum, or titanium, or any combination thereof.

16. A heat-quench distortion resistant laminate of claim 8, wherein said alkali silicate inorganic resin composition comprises a reaction product of the following:

about 30 to about 85 wt. % of said alkali silicate;

about 0.01 to about 20 wt. % of said acidic oxoanionic compound;

optionally about 0.1 wt. % to about 20 wt. % of said clay filler;

optionally about 0.01 wt. % to about 20 wt. % of said oxide; and

about 15 to about 60 wt. % of said water.

17. A heat-quench distortion resistant laminate of claim 10, wherein said alkali silicate inorganic resin composition comprises a reaction product of the following:

about 30 to about 85 wt. % of said alkali silicate;

about 0.01 to about 20 wt. % of said acidic oxoanionic compound;

optionally about 0.1 wt. % to about 20 wt. % of said clay filler;

optionally about 0.01 wt. % to about 20 wt. % of said oxide; and

about 15 to about 60 wt. % of said water.

18. The heat-quench distortion resistant laminate of claim 13, wherein said alkali silicate inorganic resin composition comprises a reaction product of the following:

about 30 to about 85 wt. % of said alkali silicate;

about 0.01 to about 20 wt. % of said acidic oxoanionic compound;

about 0.01 to about 60 wt. % of said reactive acidic glass;

optionally about 0.1 wt. % to about 20 wt. % of said clay filler;

optionally about 0.01 wt. % to about 20 wt. % of said oxide; and

about 15 to about 60 wt. % of said water.

19. The heat-quench distortion resistant laminate of claim 15, wherein said alkali silicate inorganic resin composition comprises a reaction product of the following:

about 30 to about 85 wt. % of said alkali silicate;

about 0.01 to about 20 wt. % of said acidic oxoanionic compound;

about 0.01 to about 60 wt. % of said reactive acidic glass;

optionally about 0.1 wt. % to about 20 wt. % of said clay filler;

optionally about 0.01 wt. % to about 20 wt. % of said oxide; and

about 15 to about 60 wt. % of said water.

20. The heat-quench distortion resistant laminate of claim 11, wherein said laminate is a portion of an exhaust pipe.