Method to make ultra stable structural laminate

Patent metadata

Field	Value
Publication number	US-10910988-B2
Application number	US-201816216723-A
Country	US
Kind code	B2
Filing date	Dec 11, 2018
Priority date	Nov 7, 2017
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

A method to make an ultra-stable structural laminate of a cementitious material with a nano-molecular veneer and a foam component catalytically reacted into an expanded closed cell foam having a thickness from ⅛th inch to 8 inches, a density from 1.5 pounds/cubic foot to 3 pounds/cubic foot that inter-engages the cementitious material forming a matrix creating the ultra-stable structural laminate with fire resistance; a lateral nail pull strength from 44 pounds to 300 pounds of force; an insulation R value from 1 to 40; a resistance to seismic impact for earthquakes over 3.1 on the Richter Scale; a break point from 7 lbs/inch to 100 lbs/inch; and a resistance to wind shear equivalent to a 15 mph downburst.

First claim

What is claimed is:

1. A method to make a structural laminate, the method comprising:
(i) forming a cementitious material by combining:
(a) 29 wt % to 40 wt %, based on the final total weight of the cementitious material, of a magnesium oxide dry powder containing 80 wt % to 98 wt % of magnesium oxide, the magnesium oxide having a surface area ranging from 5 meters 2 /gram to 50 meters 2 /gram and an average particle size of from about 0.3 to about 90 microns, and wherein more than about 90% by weight of the magnesium oxide particles have a particle size of less than or equal to about 40 microns;
(b) 14 wt % to 18 wt %, based on the final total weight of the cementitious material, of magnesium chloride dissolved in water;
(c) 0.1 wt % to 10 wt %, based on the final total weight of the cementitious material, of a stabilizing material, the stabilizing material comprising:
a. an aqueous solution comprising 55 wt % to 65 wt % of phosphorous acid (H 3 PO 3 );
or

b. an aqueous solution comprising 80 wt % to 90 wt % of phosphoric acid (H 3 PO 4 );

thereby forming an amorphous phase cementitious material comprising a plurality of crystals, each of the plurality of crystals having a molecular weight within the range of 280 to 709, and being encapsulated by the amorphous phase cementitious material,
wherein a majority of the stabilizing material is consumed during curing into a nano-molecular veneer while increasing surface area of the plurality of crystals by 2% to 49%, and
wherein the nano-molecular veneer is insoluble in water and protects the plurality of crystals from degradation in water at temperatures from 20 degrees to 60 degrees Celsius for from 24 hours to 56 days;

(ii) catalytically reacting a foam component into an expanded closed cell foam having a thickness from ⅛th inch to 8 inches, and a density from 1.5 pounds/cubic foot to 3 pounds/cubic foot; and
(iii) disposing the cementitious material over the expanded closed cell foam while the closed cell foam is expanding, thereby forming a structural laminate.

2. The method of claim 1 , further comprising adding 0.1 wt % to 30 wt %, based on the final total weight of the cementitious material, of an aggregate comprising particles having a diameter from 1 nm to 10 mm, wherein the aggregate comprises at least one selected from the group consisting of wood, perlite, styrene based foam beads, calcium carbonate powder, and glass particulate.

3. The method of claim 2 , further comprising adding to the cementitious material 0.1 wt % to 2 wt %, based on the final total weight of the cementitious material, of a reinforcing material comprising a non-woven or woven silica containing mat, or a non-woven or woven hydrocarbon containing mat.

4. The method of claim 1 , further comprising adding 0.1 wt % to 15 wt %, based on the final total weight of the cementitious material, of biomass to the amorphous phase cementitious material and mixing from 3 to 10 minutes.

5. The method of claim 4 , wherein the biomass is selected from the group consisting of rice husks, corn husks, and dung.

6. The method of claim 2 , further comprising adding to the cementitious material 0.1 wt % to 10 wt %, based on the final total weight of the cementitious material, of at least one surfactant that is effective to decrease porosity of the aggregate and to prevent the amorphous phase cementitious material from entering pores of the aggregate.

7. The method of claim 6 , wherein the surfactant is a detergent.

8. The method of claim 2 , further comprising adding to the cementitious material 0.1 wt % to 5 wt %, based on the final total weight of the cementitious material, of a re-dispersible powder polymer and mixing from 3 to 10 minutes.

9. The method of claim 8 , wherein the re-dispersible powder polymer is selected from the group consisting of a silicone, a polyurethane dispersion, a polyurethane, a polymer of an alkyl carboxylic acid vinyl ester monomer, a polymer of a branched or unbranched alcohol ester of (meth)acrylic acid monomer, a polymer of a vinyl aromatic monomer, a polyolefin, a polydiene, a polyvinyl halide, and a copolymer of vinyl acetate and ethylene.

10. The method of claim 8 , further comprising adding to the cementitious material 0.1 wt % to 5 wt %, based on the final total weight of the cementitious material, of an acrylic or a styrene butadiene rubber while the re-dispersible powder polymer is added.

11. The method of claim 1 , wherein the expanded closed cell foam is a pentane blown closed cell polyurethane foam.

12. The method of claim 1 , wherein the foam component is selected from the group consisting of a polyurethane, a polyisocyanurate, and a polystyrene.

13. The method of claim 1 , further comprising adding to the cementitious material 0.1 wt % to 15 wt %, based on the final total weight of the cementitious material, of at least one reinforcing material selected from the group consisting of chopped silica-containing fibers, hemp-containing fibers, nano-molecular carbon fiber strands, chopped carbon fibers, and chopped hydrocarbon fibers.

14. The method of claim 13 , wherein the reinforcing material is chopped carbon fibers.

15. The method of claim 1 , wherein the structural laminate exhibits fire resistance.

16. The method of claim 1 , wherein the structural laminate exhibits a lateral nail pull strength from 44 to 300 pounds of force.

17. The method of claim 1 , wherein the structural laminate exhibits an insulation R value from 1 to 40.

18. The method of claim 1 , wherein the structural laminate exhibits a resistance to seismic impact for earthquakes over 3.1 on the Richter Scale.

19. The method of claim 1 , wherein structural laminate exhibits a break point from 7 lbs/inch to 100 lbs/inch.

20. The method of claim 1 , wherein the structural laminate exhibits a resistance to wind shear equivalent to a 15 mph downburst.

21. A method to make a structural laminate, the method comprising:
forming a cementitious material by combining:
(a) 29 wt % to 40 wt %, based on the final total weight of the cementitious material, of a magnesium oxide dry powder containing 80 wt % to 98 wt % of magnesium oxide, the magnesium oxide having a surface area ranging from 5 meters 2 /gram to 50 meters 2 /gram and an average particle size of from about 0.3 to about 90 microns, and wherein more than about 90% by weight of the magnesium oxide particles have a particle size of less than or equal to about 40 microns;
(b) 14 wt % to 18 wt %, based on the final total weight of the cementitious material, of a magnesium chloride dissolved in water;
(c) 0.1 wt % to 10 wt %, based on the final total weight of the cementitious material, of a stabilizing material, the stabilizing material comprising:
a. an aqueous solution comprising 55 wt % to 65 wt % of phosphorous acid (H 3 PO 3 );
or

b. an aqueous solution comprising 80 wt % to 90 wt % of phosphoric acid (H 3 PO 4 );

thereby forming an amorphous phase cementitious material comprising a plurality of crystals, each of the plurality of crystals having a molecular weight within the range of 280 to 709, and being encapsulated by the amorphous phase cementitious material,

(ii) pouring the cementitious material onto a mold and curing the cementitious material, wherein a majority of the stabilizing material is consumed during curing into a nano-molecular veneer while increasing surface area of the plurality of crystals by 2% to 49%, and the nano-molecular veneer is insoluble in water and protects the plurality of crystals from

Assignees

• Mitek Holdings Inc

Inventors

• Wambaugh James A
• Rochner Brett
• Weinberger Cole J

Classifications

• E04B2/66

  characterised by special cross-section of the elongated members · CPC title

• E04B2/64

  with elongated members of concrete · CPC title

• E04B2/68

  made by filling-up wall cavities (E04B2/24, E04B2/38, E04B2/52 take precedence) · CPC title

• E04C2/288

  composed of insulating material and concrete, stone or stone-like material · CPC title

• E04C2/16

  of fibres, chips, vegetable stems, or the like · CPC title