60 results about "Building material" patented technology

The invention discloses an industrially-applicable method for preparing a polymer foamed material by using supercritical fluid technology, which comprises the following steps: 1) forming a polymer raw material to be foamed into raw blanks by melting, blending and cooling; 2) placing the raw blanks in a container, charging supercritical fluid into the container, and allowing the raw blanks to swell and the supercritical fluid to permeate into the raw blanks; and 3) initiating nucleation and foaming by controlling pressure relief rate and obtaining the closed micro pore polymer foamed material with uniform pore diameter and adjustable pore density. According to the invention, the process is simple, the production process is clean and environment-friendly, the efficiency is high, and the prepared foamed material has high mechanical performance and can be used in fields of transportation vehicles, building materials, packages and the like.

The invention belongs to the field of building material, which more particularly relates to a preparation method and application of a mineral admixture with high activity that takes wasted concrete as raw material. The preparation method of the mineral admixture with high activity comprises the following steps: (1) the wasted concrete is collected, the sundries are removed, and crushing equipment is used for processing concrete blocks into particle with diameter of being distributed in 2 to 40mm as recycled aggregate; (2) grinding or crushing equipment is used for striping and exfoliating the cement paste attached on the surface of the recycled aggregate, thus separating the formed powder with hardened cement stone and having diameter of 0.05 to 1mm to be the raw materials of the mineral admixture with high activity; (3) powder preparation equipment are used for processing the raw material further into superfine powder with Bertrand rate surface area not less than 600m<2>/Kg, that is the finished products of mineral admixture with high activity. The preparation method and application of a mineral admixture with high activity that takes wasted concrete as raw material has the advantages of good economy, high performance price ratio, large marketing need, good environmental protection and economy benefit, which has wide prospect for generalization and application.

The invention provides a method for producing a transparent clinker capable of being compounded with a colored glaze ceramic blank and relates to the technical field of building materials. The method comprises the following steps: taking quartz, potash feldspar, soda feldspar, calcite, soapstone, dolomite, barium carbonate, sodium carbonate, potassium carbonate, sodium borate and boracic acid, which are all 80-700kg and less than 100 meshes, and taking 100kg sodium chloride, sodium sulfate or fluorite, which is less than 100 meshes, as a clarifying agent; uniformly mixing the raw materials of the clinker, and then placing into a glass tank furnace for melting at 1520-1600 DEG C; and performing water-quenching, drying, crushing and screening on the melt material, thereby obtaining 20-200 mesh transparent clinker dry grains containing 50-70% of SiO2, 5-20% of Al2O3, 0-10% of CaO, 0-10% of MgO, 2-8% of K2O+Na2O, 0-8% of BaO, 0-8% of B2O3, 1-10% of clarifying agent and less than 0.5% of water. The method is used for producing the clinker; materials are selected within a preset component scope of the products; and the technology is standardized.

The invention relates to a fluid construction mixture comprising a sludge or tailing material (such as a dredged material), a binder, a binder retarding agent, optionally one or more other ingredients. The invention further relates to a method for preparing a solid construction material and to the use of construction material in infrastructural projects.

The invention provides a dust-free cutting and polishing device for building materials, which belongs to the technical field of building cutting. The roller welding is fixedly arranged under the supporting net plate and on the right side of the first conveying roller; the cutting device is arranged at the middle part below the supporting net plate; the grinding device is arranged on the right side of the cutting device; the pushing material The device is arranged on the right side of the bottom of the inner cavity of the box; the slide rail is arranged on the right side of the bottom of the inner cavity of the box; the discharge plate is arranged on the right bottom of the box; the device of the present invention passes through the The lower end is provided with a cutting wheel through the second hydraulic cylinder, which has the function of cutting building materials; the lower end of the third motor is provided with a grinder through the second hydraulic cylinder, which has the function of deburring the cut building materials; the device has The utility model has the characteristics of simple structure, strong practicability and good cutting effect.

The invention belongs to the technical field of building material coating, and particularly relates to a saltpetering-prevention sulphoaluminate cement product and a preparation method thereof. The saltpetering-prevention sulphoaluminate cement product is characterized by being prepared from the following ingredients in parts by weight: 50 to 80 parts of sulphoaluminate cement, 8 to 15 parts of fly ash, 7 to 12 parts of silica fume, 8 to 12 parts of glass fiber, 30 to 90 parts of water, 2 to 5 parts of retarding agents, 3 to 5 parts of water retention agents, 3 to 5 parts of thickening agnets and 5 to 8 parts of saltpetering inhibitors. The saltpetering-prevention sulphoaluminate cement product has the advantages that the formula is reasonable; the use is convenient; the surface of the saltpetering-prevention sulphoaluminate cement product is smooth; anti-seepage performance and water-resistant performance are good; saltpetering cannot occur in the long-time use process.

The invention belongs to the field of building materials, which relates to a shale-sintered hollow ganged brick. The large-sized bearing or nonbearing hollow wall brick is prepared by performing crushing, sieving, stirring, aging, impact molding, drying and roasting on shale taken a main raw material and biomass wastes as raw materials for internal combustion. The shale-sintered hollow ganged brick has the advantages that barren mountain wastes are utilized; fertile farmlands are not occupied; cultivated lands are protected; the energy conservation and the consumption reduction are realized; the construction cost is decreased; the traditional architectural style of ganged walls is maintained and the like.

The present invention relates to a method for preparing tungsten oxide and tungsten powder from scheelite. The method uses the scheelite as a raw material and comprises the following steps: (1) conducting leaching reaction; (2) conducting filtering and washing; (3) conducting hydrogen peroxide extraction-decomposition to extract tungsten; (4) conducting hydrogen peroxide multiple dissolution-decomposition to purify tungstic acid; (5) pure tungstic acid calcination to prepare tungsten trioxide; and (6) conducting peroxotungstic acid solution spraying pyrolysis to prepare tungsten oxide and tungsten powder. The method only consumes cheap and easily available sulfuric acid, greatly reduces the decomposition cost of the scheelite and uses sulfuric acid to decompose; decomposed residues are gypsum; the gypsum can be used as building materials; the method does not produce dangerous waste alkali cooking residues, greatly reduces production and operation costs of enterprises, uses hydrogen peroxide as an extractant of tungstic acid, does not produce ammonia nitrogen wastewater, eliminates the technology of producing the ammonia nitrogen wastewater for many years in tungsten smelting, greatly reduces environmental protection costs, directly produces various tungsten end products and tungsten powder, and improves added value of products of the tungsten smelting enterprises.

The invention provides high-fire-resistance rigid polyurethane foam plastic and a preparation method thereof and relates to a fireproof building material and a preparation method thereof. The high-fire-resistance rigid polyurethane foam plastic has the fire resistance of B1 grade, stable foaming and curing reaction time, and brand new flame-retardant and fire-resistant characteristics. The high-fire-resistance rigid polyurethane foam plastic consists of a polyurethane modified white material and a polyurethane black material, wherein the mass ratio of the polyurethane modified white material to the polyurethane black material is 1:(1-1.8); the polyurethane modified white material consists of the following components in part by mass: 5 to 15 parts of expanded graphite with the grain size of 150 to 300 meshes, 1 to 6 parts of aluminium hydroxide with the grain size of 100 to 500 meshes, 2 to 10 parts of ammonium polyphosphate, 0.5 to 1 part of zinc borate and 40 to 45 parts of polyurethane white material; the polyurethane white material refers to Elastopor CH1141C-A in BASF Company; the polyurethane black material refers to the black material of M20S in the BASF Company; the molecular formula of the ammonium polyphosphate is (NH4PO3)n; and the weight mean polymerization degree n is 500 to 1,200.

The invention belongs to the field of building materials, and provides a self-repairing ecological cement road material and a preparation method. A biomass phase change material is used as a carrier for a self-repairing agent, the self-repairing agent comprises calcium salt and carbonic acid, and the biomass phase change material comprises one or more of bamboo powder, wood powder and corn stalk powder and a phase change material. The preparation method comprises the following steps: grinding the biomass material into fine powder, adding into the phase change material, fully mixing to preparethe biomass phase change material, adsorbing the carbonic acid by porous silicon dioxide, and coating with the biomass phase change material to obtain a capsule; wrapping the calcium salt with the biomass phase change material to obtain a capsule; then, adding the two microcapsules prepared in the steps into a cement material matrix. When a road is damaged, the phase change material is dissolved when the temperature rises, and then Ca<+> reacts with the carbonic acid to produce calcium carbonate for repairing the road.

The invention discloses a method for preparing a gray iron based composite material for generating tungsten carbide in situ. The method comprises the following steps: weaving tungsten wires into a tungsten wire net with certain specification, and cutting, coiling or overlapping the tungsten wire net to form a fixed structure which is preset in a die cavity of a casting mould; and smelting the gray iron to obtain molten gray iron to be poured into a casting mould, and cooling and cleaning the casting mould to obtain the gray iron based composite material for generating the tungsten carbide in situ. The gray iron based composite material for generating the tungsten carbide in situ prepared by the method can obtain evenly-distributed tungsten carbide hard phases at the position of the tungsten wire net through the reaction in situ of the tungsten in the tungsten wire net and the carbon in the gray iron. The gray iron based composite material fully plays the high wear resistance of the tungsten carbide hard phases and the good toughness of the gray iron, the hard phases are arranged orderly and are distributed evenly, the regulation and the control are convenient, and the process is reliable, thus the gray iron based composite material can be widely used in the wear resisting fields such as mine, electric power, metallurgy, coal, building materials and the like for producing wear resistant parts with various shapes and any size specification.

The present invention describes an improved building material composition, useful for example as a fire door core. The building material of the present invention is prepared by compressing an aqueous mixture of expanded perlite and a fast setting, cementitious composition consisting essentially of a hydraulic cement, preferably Portland cement, and a pozzolan additive selected from the group consisting of metakaolin, VCAS and mixtures thereof, and preferably also includes an organic binder and a fibrous reinforcement.

The invention provides a mineral separation and enrichment method for a primary scandium ore. The method comprises the steps of crushing, ore grinding, low-intensity magnetic separation, high-intensity magnetic roughing and scavenging, concentrate regrinding, high-intensity magnetic concentration and the like. A scandium concentrate obtained by using the method disclosed by the invention is subjected to wet-metallurgy scandium extraction, so that the scandium ore resource becomes a developable and utilizable resource, the production efficiency of wet-process scandium extraction can be effectively increased, the consumption of various auxiliary materials such as acid and alkaline required by wet-process scandium extraction and the production cost can be remarkably reduced, and environment pollution caused by a wet-process scandium extraction process is reduced. Meanwhile, the produced tailings can be recycled in the industries such as building materials, the chemical industry, ceramics and glass, so that the comprehensive recycling value of the resource is increased, and the ecological and environment protection influences caused by tailing accumulation and storage are reduced.

The invention relates to the technical field of construction and building materials, in particular to photocatalytic concrete prepared with a phosphogypsum-based hydraulic composite binding material and a preparation method of the photocatalytic concrete. The photocatalytic concrete is prepared from phosphogypsum, slag powder, limestone powder, portland cement, broken glass slag, wind-blown sands,a foamer, a foam stabilizer, a water reducer and a photocatalytic organic adhesive. The photocatalytic concrete provided by the invention can be used to improve the indoor air pollution problem, particularly perform adsorption and degradation on harmful gas including formaldehyde, the improvement can be finished under the condition of natural illumination without more energies and operation steps, and the photocatalytic concrete has market value. The photocatalytic concrete is suitable for the field of indoor decorative materials including light wall body materials, gypsum wall body articlesand ceiling decorative plates.

The invention provides anti-crack impervious concrete, belonging to the technical field of building materials. The anti-crack impervious concrete comprises the following components in parts by mass: 200 to 300 parts of cement, 100 to 150 parts of coal ash, 950 to 1100 parts of gravels, 850 to 1050 parts of sand, 0.5 to 1 part of nanometer inorganic oxide, 0.5 to 1 part of nanometer zinc oxide, 6 to 12 parts of an additive, 1 to 3 parts of a self-repairing agent and 155 to 170 parts of water. According to the invention, the nanometer inorganic oxide, the nanometer zinc oxide, the additive and the self-repairing agent are used as main raw materials, the small-size effect, the surface interface effect, the self-repairing effect, the surface energy condition technology and the like of nanomaterials are used for improving and optimizing the pores and compactness of the concrete, and water is blocked through self-repairing to repair cracks; a hydration heat release rate and pore solution surface energy are reduced by inhibiting moisture evaporation of a concrete mixture in condensation and hardening, so the volume stability of the concrete is maximized; and finally, self-repairing is conducted on cracks which possibly occur. Therefore, the concrete has crack resistance and impermeability in a full-period range, and the durability and the structural safety of the concrete are improved.

The invention relates to a preparation method of a far infrared antibacterial ceramic in the field of building materials. The method includes: compounding vanadium-titanium waste residue, bastnaesite, monezite, xenotime, Minjiang clay, quartzite, calcite, sepiolite, kaolinite and limestone according to a formula, adding a mud cosolvent and performing wet ball milling treatment, carrying out spray granulation, dry pressing, demoulding and drying, and then conducting firing so as to obtain the far infrared antibacterial ceramic product. The formula comprises, by mass percentage: 20-50% of vanadium-titanium waste residue, 3-5% of bastnaesite, 2-4% of monezite, 2-6% of xenotime, 10-30% of Minjiang clay, 15-45% of quartzite, 5-15% of calcite, 2-6% of sepiolite, 2-10% of kaolinite, and 4-8% of limestone. The far infrared antibacterial ceramic prepared by the method provided by the invention has the advantages of high infrared emissivity, good sterilizing effect, high ceramic strength and low cost.

The invention discloses an enhanced reflective EPE (Expandable Poly Ethylene) thermal insulating building material comprising an outer aluminum foil layer, a physically foamed flame retardant polyethylene layer and a flame retardant polyethylene woven cloth layer, wherein every two adjacent ones of the outer aluminum foil layer, the physically foamed flame retardant polyethylene layer and the flame retardant polyethylene woven cloth layer are orderly connected integrally through thermal compounding by means of a flame retardant polyethylene layer, and the lower surface of the flame retardant polyethylene woven cloth layer is thermally compounded with the flame retardant polyethylene layer; the bright smooth surface of the outer aluminum foil layer is outward; each of the physically foamed flame retardant polyethylene layer, the flame retardant polyethylene woven cloth layer and the flame retardant polyethylene layer contains polyethylene in a weight ratio of 80-92% and a flame retardant master batch in the weight ratio of 8-20%; and the flame retardant master batch is prepared from a low-density polyethylene base material in the weight ratio of 20-40%, a bromide in the weight ratio of 25-40%, antimonous oxide in the weight ratio of 15-35% and a dispersant in the weight ratio of 10-20% through formulation, and then melting mixing and pelleting. The enhanced reflective EPE thermal insulating building material provided in the invention is high in tensile strength, not easy to age, long in service life, and greatly improved in both heat-shielding performance and flame retardant property.

Fire-retardant powder comprising at least 30% by weight of Lewis acid, at least 5% by weight of alkaline bicarbonate, and at least 3% by weight of silica, and method of manufacturing such fire-retardant powder. A building material preferably comprising natural fibers and comprising at least 5% by weight and at most 30% of such powder.

The invention belongs to the technical field of building materials, and particularly relates to an autoclaved aerated concrete block and a preparation method thereof. Waste wind power blade fibers used in the invention can inhibit and reduce the dry shrinkage of the autoclaved aerated concrete block, and avoid the problems of masonry cracking and the like caused by water absorption and large dry shrinkage of the block in the actual use process; and the characteristics of small particle size and high specific surface area of the waste wind power blade powder are fully utilized, the waste wind power blade powder is used for replacing fly ash, slag and other raw materials in conventional building block production raw materials, the micro aggregate filling effect of the waste wind power blade powder is exerted, and the mechanical property of the building block is enhanced.

The present invention discloses a thermal-insulation coating, which comprises, by weight, 2-4 parts of magnesium oxide, 30-35 parts of a silicon-containing material, 30-40 parts of vermiculite powder, 5-7 parts of perlite powder, 6-10 parts of mica powder, 3-4 parts of an adhesive, and 0.1-0.5 part of plant protein glue. The thermal-insulation coating of the present invention has the following beneficial effects that: the thermal-insulation coating selects a variety of ores as the raw materials so as to provide advantages of no pollution, good stability, thermal insulation, sound insulation, fire resistance and the like, the adhesion is strong so as to firmly attach to the material surface layer, the durability is good, and the environmental protection coating of the present invention has characteristics of easy construction and easy promotion, and is the high-quality green environmental protection building material.

The invention discloses bamboo plywood and a preparing method thereof, and belongs to the field of building materials. The method comprises the steps that according to weight parts, raw materials are obtained, the phenolic resin 2124, polyvinyl alcohol, nonylphenol polyoxyethylene ether and a diluent are stirred and mixed, a phenolic resin adhesive is obtained, then a filter cake is placed in the phenolic resin adhesive for gum dipping and dried, gum-dipped bamboo skin is obtained, the gum-dipped bamboo skin is placed in a hot press machine which uses steam as a hot source, a blank is obtained by pressing, the blank is cooled, and the bamboo plywood is obtained. The bamboo plywood and the preparing method thereof have the beneficial effects that the bamboo plywood has good glue strength, after being used, the bamboo plywood is not prone to warping, deforming or degumming, and the bamboo plywood is worthy of being used and promoted.

The invention relates to the technical field of building materials, in particular to a waterproof, sun-proof and heat-insulating building material protection brick and a preparation method and application thereof. The waterproof, sun-proof and heat-insulating building material protection brick at least comprises the following components in parts by weight: 30-60 parts of cement, 70-100 parts of aheat-insulating material, 25-45 parts of an acrylic emulsion, 5-25 parts of a polyurethane emulsion, 0-3 parts of a release agent and 5-15 parts of a filler. The prepared protection brick is light inweight, cannot damage the bearing structure of a building, is good in bearing performance, and can bear multiple people to walk randomly at the same time; the waterproof, sun-proof and heat-insulatingbuilding material protection brick is laid on the top of a building, can form an integrated waterproof barrier, has good heat-insulation performance, can completely block exposure to the sun in midsummer and invasion of cold air in winter, improves indoor comfort, and saves cooling and heating cost.

The invention provides a soil modifier and an application method thereof. The soil modifier is an aqueous solution consisting of acrylamide, polyvinyl alcohol, sodium dodecyl benzene sulfonate and calcium chloride with certain mass fractions. In actual usage process, the soil modifier is uniformly mixed with an initiator and soil according to a certain mass ratio, and the soil is compacted for forming and is irradiated by microwaves for a certain time, so that a soil modifying building material is obtained. The soil modifier and the application method are simple, and additionally the soil modifier takes mine tailings, waste soil and other solid wastes as application targets and is beneficial for environment protection.

The invention relates to the field of building materials, in particular to an ultra-fine fly ash light self-insulation wall plate and a manufacturing method thereof. Fly ash is processed by a specialgrinder into ultra-fine fly ash with the specific surface area of 700m<2>/kg, fly ash crude residues discarded after air separation of a power plant replace building sand, 5-10 parts of silicate cement, HT-type special enhancers for the fly ash and water are mixed to form slurry, two fly ash cement foamed light insulation plates are embedded into the middle of a mould, alkali resistant glass fibergrid cloth is laid on the upper portion and the lower portion of the mould, 0.5-1.0 centimeter thick mixed slurry is uniformly poured on the periphery of the mould, tamped and leveled, the two fly ash cement foamed light insulation plates are firmly wrapped in the middle and demoulded after standing for 2-4 hours, and natural curing is performed for 7-10 days. The ultra-fine fly ash light self-insulation wall plate is light in weight, low in production cost, high in fly ash rate reaching 90% or more and applicable to internal, external and roof walls of buildings.

The invention discloses a preparation method of modified pitchstone-based thermal insulation mortar, and relates to the technical field of building materials. The method comprises the following steps: (1) preparation of modified pitchstone; (2) preparation of silanized polypropylene fibers; (3) preparation of the thermal insulation mortar. The modified pitchstone-based thermal insulation mortar prepared by the method has excellent heat preservation effect and crack resistance.