Inorganic-organic composite articles and methods for producing them using inorganic acidic/alkaline precursor components as inorganic adhesives is provided. Articles prepared therefrom provide improved flexibility, zero flame spread, no release of volatile organic compounds, and low carbon foot prin
Inorganic-organic composite articles and methods for producing them using inorganic acidic/alkaline precursor components as inorganic adhesives is provided. Articles prepared therefrom provide improved flexibility, zero flame spread, no release of volatile organic compounds, and low carbon foot print.
대표청구항▼
1. A method of producing zero flame spread articles, the method comprising providing a combustible article; andintroducing a coating of inorganic phosphate adhesive to at least a portion of the combustible article; wherein the combustible article comprises a plurality of stacked thin sheets of wood,
1. A method of producing zero flame spread articles, the method comprising providing a combustible article; andintroducing a coating of inorganic phosphate adhesive to at least a portion of the combustible article; wherein the combustible article comprises a plurality of stacked thin sheets of wood,bonding the plurality of stacked thin sheets of wood with the inorganic adhesive, whereby a veneered sheet product is obtained, the inorganic adhesive comprising a mixture of:(i) at least one inorganic phosphate component of sodium dihydrogen phosphate (NaH2PO4), potassium dihydrogen phosphate (KH2PO4), cesium dihydrogen phosphate (CsH2PO4), magnesium dihydrogen phosphate (Mg(H2PO4)2.2H2O), calcium dihydrogen phosphate (Ca(H2PO4)2.2H2O), zinc dihydrogen phosphate (Zn(H2PO4)2), mono aluminum hydrophosphate (AlH3(PO4)2.H2O), and mixtures thereof;(ii) at least one of calcium silicate, olivine, mullite, talc, oxide minerals, fly ash, bottom ash, Bayer process waste, acidic waste streams generated during extraction of copper from copper ore, or waste streams containing silicate and aluminate minerals, and mixtures thereof; and(iii) at least one alkaline precursor component comprising a saturated solution or a paste of at least one of a monovalent- divalent-, or trivalent metal oxide or hydroxide of magnesium, calcium, iron, manganese, zinc, barium, strontium, aluminum, lanthanide, and mixtures thereof. 2. The method of claim 1, wherein the alkaline precursor is a solution of metal hydroxide rich brine. 3. The method of claim 2, wherein the metal hydroxide rich brine is magnesium hydroxide brine solution or pregnant Bayer liquor of aluminum hydroxide. 4. The method of claim 1, futher comprising the addition of at least one of sodium hydroxide (NaOH), potassium hydroxide (KOH), ammonium hydroxide (NH4OH), and calcium hydroxide (Ca(OH)2) in an amount sufficient to raise the aqueous pH of the alkaline precursor. 5. The method of claim 4, wherein the aqueous pH of the alkaline precursor is between about 10 to about 11. 6. The method of claim 1, further comprising adjusting the solution pH of the inorganic acidic to between about 3 to about 4.5. 7. The method of claim 6, wherein the pH is reduced by adding hydrophosphates. 8. The method of claim 1, wherein the inorganic phosphate precursor is potassium dihydrogen phosphate (KH2PO4), and the alkaline component is magnesium oxide.
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