Abstract:
Provided is a thermal insulation having both excellent thermal insulating performance and excellent strength, and a method of producing the same. A method of producing a thermal insulation according to the present invention includes curing (S2) a dry-pressed compact, including silica fine particles each having an average particle diameter of 50 nm or less and a reinforcement fiber, at a relative humidity of 70% or more.
Abstract:
A heat insulator including a porous sintered body having a porosity of 70 vol % or more, pores having a pore size of more than 1000 μm in a proportion of 10 vol % or less of all pores and pores having a pore size of 0.8 μm or more and less than 10 μm occupy 50 vol % or more and 80 vol % or less of pores having a pore size of 1000 μm or less, while pores having a pore size of 0.01 μm or more and less than 0.8 μoccupy 10 vol % or more and 30 vol % or less pores having a pore size of 1000 μm or less. The porous sintered body is formed from MgAl2O4 raw material and includes a fibrous layer formed from inorganic material fibers, the heat conductivity of the heat insulator at 1000° C. or more and 1500° C. or less being 0.40 W/m·K) or less.
Abstract:
A method comprising (a) first, preparing a grout additive fluid comprising a fresh water base fluid and a grout additive control package comprising a primary additive selected from the group consisting of an inhibitor, a dispersant, a thermally conductive material, and any combination thereof, wherein at least about 90% of the dispersant and the inhibitor are dissolved in the fresh water base fluid; (b) second, introducing an aqueous swellable clay into the grout additive fluid, thereby forming a final grout fluid; and (c) third, introducing the final grout fluid into an annulus in a subterranean formation, the annulus formed between an exterior of a geothermal well loop tubular and the subterranean formation.
Abstract:
An extrudable cement-based material is formed from a mixture that includes cement in the range of about 40 to 90% by wet weight percent, a lightweight expanded aggregate in the range of about 10 to 60% by wet weight percent, a secondary material in the range of about 0.1 to 50% by wet weight percent, a reinforcement fiber in the range of about 1 to 20% by wet weight percent, a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent, a retarder in the range of about 0.1 to 8% by wet weight percent, and water in the range of 10 to 60% of a total wet material weight.
Abstract:
The disclosure provides a low-temperature manufacturing method for an inorganic foam material including the following steps. A mixing process is performed, and the mixing process includes mixing a glass and a cement to form a raw material of inorganic foam material. A low temperature process is performed, for producing a gas inside the raw material of inorganic foam material by a foaming agent, and for forming an inorganic foam material made from the glass and the cement. The manufactured inorganic foam material has a low density, a high compressive strength and is capable of insulating heat. Also, the manufactured inorganic foam material has advantages of noise insulation, thermal insulation, fireproof, as well as featuring lower water absorption and lower shrinkage.
Abstract:
One aspect of the heat insulator of the present invention includes a porous sintered body having a porosity of 70 vol % or more and less than 91 vol %, and pores having a pore size of 0.8 μm or more and less than 10 μm occupy 10 vol % or more and 70 vol % or less of the total pore volume, while pores having a pore size of 0.01 μm or more and less than 0.8 μm occupy 5 vol % or more and 30 vol % or less of the total pore volume. The porous sintered body is formed from an MgAl2O4 (spinel) raw material and fibers formed of an inorganic material, the heat conductivity of the heat insulator at 1000° C. or more and 1500° C. or less is 0.40 W/(m·K) or less, and the weight ratio of Si relative to Mg in the porous sintered body is 0.15 or less.
Abstract:
A concrete includes cement; effective water; aggregates (G1) having a maximum size of 20 mm and a real density (ρ1) of 450 to 1200 kg/m3; optionally aggregates (G2) having a maximum size of 4 mm and a real density (ρ2), such, that the real density (ρ) of the mixture (G1)+(G2) is comprised from 450 to 1200 kg/m3 with 1/ρ=m1/(ρ1)+m2/(ρ2) m1 and m2 respectively being the mass fractions of (G1) and (G2); the concrete having (a) a density in the fresh state of 800 to 1500 kg/m3, (b) a Weffective/Beq ratio varying from 0.19 to 0.60, (c) a quantity of effective water varying from 100 to 320 litres per cubic metre of fresh concrete, (d) quantity of cement and optionally of additions greater than or equal to 200 kilograms per cubic metre of fresh concrete; (e) a volume of paste greater than or equal to 300 l/m3 of fresh concrete and a volume of air of 1 to 16%.
Abstract:
A coating composition of: from 4 to 17 wt % of hollow microspheres having a thermal conductivity (designated lambda) below 0.1 W·m−1·K−1, from 0.05 to 1 wt % of at least one linear alcohol whose hydrocarbon chain comprises at least 8 carbon atoms, from 5 to 25 wt % of at least one bonding agent selected from water-dispersible or water-soluble polymers, comprising a glass transition temperature (Tg) less than or equal to 65° C., from 25 to 50 wt % of a non-hydraulic binder that is mineral and metallic fillers: having an average particle size in the range from 5 to 100 μm, from 0.1 to 1 wt % of at least one thickener, water, Use thereof and the applications thereof as smoothing and/or heat-insulating coating for walls and ceilings.
Abstract:
Thermal insulation materials which have no binders in the form of liquids, which adhesively bond particles, and which are treated with low-volatility organosilanes or organosiloxanes whose boiling points are greater than 130° C. under atmospheric pressure, the k thermal conductivity being between 0.014 and 0.040 W/mK and the density being in the range from 50 to 300 kg/m3.
Abstract translation:不具有液体形式的粘合剂的隔热材料,粘合剂粘合颗粒,并且在大气压下沸点高于130℃的低挥发性有机硅烷或有机硅氧烷处理,k热导率在0.014 和0.040W / mK,密度在50-300kg / m 3的范围内。
Abstract:
A method of forming a wallboard material can include forming a mixture including microparticles, sodium silicate and vinyl acetate. The mixture can be disposed between a metallic facing membrane and a second facing membrane. The mixture can then be heat cured in a single step sufficient to form a wallboard material having the metallic facing membrane and the second facing membrane attached to a core matrix. The heat curing time is complete in less than about 1.5 hours without causing damage to the wallboard material.