High temperature lightweight thermal insulating cement and silica based materials
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C04B-014/06
C04B-018/24
C04B-028/04
C04B-028/06
C04B-028/18
C04B-014/42
C04B-016/02
C04B-016/06
C04B-022/04
C04B-038/10
C04B-111/28
C04B-103/00
C04B-103/40
C04B-103/48
C04B-111/40
C04B-111/00
출원번호
US-0029416
(2014-10-16)
등록번호
US-10196309
(2019-02-05)
국제출원번호
PCT/US2014/060924
(2014-10-16)
국제공개번호
WO2015/057978
(2015-04-23)
발명자
/ 주소
Andersen, Per Just
Daniels, Evan R.
출원인 / 주소
THE INTELLECTUAL GORILLA GMBH
대리인 / 주소
Chalker, Daniel J.
인용정보
피인용 횟수 :
0인용 특허 :
225
초록▼
A high temperature lightweight thermal insulating material is formed from a mixture that includes cement or silica sand, water and a foaming agent. The foaming agent can be an aluminum powder or a surfactant. The insulating material has a maximum use temperature greater than about 600 degrees Celsiu
A high temperature lightweight thermal insulating material is formed from a mixture that includes cement or silica sand, water and a foaming agent. The foaming agent can be an aluminum powder or a surfactant. The insulating material has a maximum use temperature greater than about 600 degrees Celsius.
대표청구항▼
1. An insulating material formed from a mixture comprising: a silica sand in an amount of 25 to 90% of weight wet;water in an amount of 10 to 70% of weight wet;a rheology-modifying agent in an amount of about 0.1 to 5.0% of a weight of the silica sand;a pH increasing material in an amount of about 0
1. An insulating material formed from a mixture comprising: a silica sand in an amount of 25 to 90% of weight wet;water in an amount of 10 to 70% of weight wet;a rheology-modifying agent in an amount of about 0.1 to 5.0% of a weight of the silica sand;a pH increasing material in an amount of about 0.5 to 10% by weight of the water;a foaming agent comprising an aluminum powder in an amount of 0.5% to 3.0% by weight of the silica sand or a surfactant in an amount of 0.05 to 2.0% by weight of the water; andthe insulating material having a maximum use temperature in a range of about 600 to 1000 degrees Celsius. 2. The insulating material as recited in claim 1, the insulating material having: a density in a range of about 0.1 to 1.0 g/cm3;a thermal conductivity in a range of about 0.05 to 0.30 W/(m·K); anda compressive strength in a range of about 30 to 3000 PSI (2.068 to 206.8 Bar). 3. The insulating material as recited in claim 1, the mixture having a water to silica sand ratio by weight in the range of about 0.2 to 2.0. 4. The insulating material as recited in claim 1, the mixture having a water to silica sand ratio by weight of about 1.0. 5. The insulating material as recited in claim 1, further comprising a high range water reducer (HRWR) in an amount of about 0.25 to 4.0% of a weight of the silica sand. 6. The insulating material as recited in claim 1, the mixture further comprising an additive material selected from the group consisting of cement, gypsum, silica fume, fumed silica, plaster of Paris, fly ash, slag, rock and fiber. 7. The insulating material as recited in claim 6, the fiber comprising glass fibers, cellulose fibers, polyvinyl alcohol fibers, polypropylene fibers, or a combination thereof. 8. A method for manufacturing an insulating material comprising the steps of: mixing a silica sand in an amount of about 25 to 90% of weight wet with water in an amount of about 10 to 70% of weight wet;mixing a pH increasing material in an amount of about 0.5 to 10% by weight of the water with the sand-water mixture;foaming the sand-water mixture using a foaming agent comprising an aluminum powder in an amount of about 0.5 to 3.0% by weight of the silica sand, or a surfactant in an amount of about 0.05 to 2.0% by weight of the water;pouring the foamed sand-water mixture into a mold and allowing the foamed sand-water mixture to rise to form the insulating material;removing the insulating material from the mold;heat treating the insulating material; andthe insulating material having a maximum use temperature of about 600 to 1000 degrees Celsius. 9. The method as recited in claim 8, further comprising the step of grinding the silica sand-water mixture to a fineless less than 100 microns using a ball mill prior to mixing the pH increasing material. 10. The method as recited in claim 8, wherein: the mixing step is performed for about 1 to 5 minutes;the foaming step is performed for about 5 seconds to 1 minute; andthe foamed sand-water mixture is allowed to rise for about 0.5 to 2.0 hours. 11. The method as recited in claim 8, the heat treating step comprises the step of autoclaving the insulating material for about 15-48 hours at a temperature of about 150 to 200 degrees Celsius and a pressure of about 10 to 20 Bars. 12. The method as recited in claim 8, further comprising the step of drying the insulating material. 13. The method as recited in claim 8, further comprising the step of cutting, trimming, sanding or routing the insulating material into a specified shape comprising a pipe, a half-pipe, a block or a panel. 14. The method as recited in claim 8, further comprising the step of spraying the insulating material with a water repellent comprising a water or solvent based silane. 15. The method as recited in claim 8, the insulating material having: a density in the range of about 0.1 to 1.0 g/cm3;a thermal conductivity in the range of about 0.05 to 0.30 W/(m·K); anda compressive strength in the range of about 30 to 3000 PSI (2.068 to 206.8 Bar). 16. The method as recited in claim 8, the mixture having a water to sand ratio by weight in the range of about 0.2 to 2.0. 17. The method as recited in claim 8, the mixture having a water to sand ratio by weight of about 1.0. 18. The method as recited in claim 8, further comprising a dispersion agent in an amount of about 0.25 to 4.0% of a weight of the sand. 19. The method as recited in claim 8, the mixture further comprising an additive material selected from the group consisting of cement, gypsum, silica fume, fumed silica, plaster of Paris, fly ash, slag, rock and fiber. 20. The method as recited in claim 19, the fiber comprising glass fibers, cellulose fibers, polyvinyl alcohol fibers, polypropylene fibers, or a combination thereof. 21. The method as recited in claim 8, the mixture further comprising a rheology-modifying agent in an amount of about 0.1 to 5.0% of a weight of the sand. 22. A method for manufacturing an insulating material comprising the steps of: mixing a silica sand in an amount of about 25 to 90% of weight wet with water in an amount of about 10 to 70% of weight wet for about 1 to 5 minutes;mixing a pH increasing material in an amount of about 0.5 to 10% by weight of the water with the sand-water mixture for about 1 to 5 minutes;foaming the sand-water mixture using a foaming agent comprising an aluminum powder in an amount of about 0.5 to 3.0% by weight of the sand for about 5 seconds to a minute, or a surfactant in an amount of about 0.05 to 2.0% by weight of the water for about 1 to 10 minutes;pouring the foamed sand-water mixture into a mold and allowing the foamed sand-water mixture to rise to form the insulating material;removing the insulating material from the mold;heat treating the insulating material; andthe insulating material having a maximum use temperature of about 600 to 1000 degrees Celsius, a density in the range of about 0.1 to 1.0 g/cm3, a thermal conductivity in the range of about 0.05 to 0.30 W/(m·K), and a compressive strength in the range of about 30 to 3000 PSI (2.068 to 206.8 Bar).
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