144results about How to "Shorten hardening time" patented technology

The invention describes a new calcium phosphate cement powder, whose composition can best be described over the Ca/P molar ratio range of 1.35 to 1.40, most preferably 1.39, and whose two components were prepared by wet chemical synthesis procedures. One component is chemically-synthesized, bi-phasic alpha-TCP (Ca₃(PO₄)₂, 95 wt %)+HA (Ca₁₀(PO₄)₆(OH)₂, 5 wt %) powder, while the second component is again a chemically-synthesized, single-phase DCPD (CaHPO₄·2H₂O) powder. A setting solution (Na₂HPO₄·2H₂O) is used to form a self-setting calcium phosphate cement from the powder mixture. This cement can be used as bone filler or bone substitute in applications, which require higher rates of resorption.

A municipal or like refuse is crushing, mixing with crushed limestone, dry up in two stages—by hot air and by part of solid products of pyrolysis which other part goes on washing out and filtration. Pyrolysis is carried out in two stages—due to heat of the specified part of solid products of pyrolysis and simultaneous neutralization of allocated hydrogen chloride by limestone with reception of calcium chloride, and then due to heat of final chimney gases of the combustion chamber, where in three stages the washed solid products of pyrolysis preliminary drained by a part of combustion chamber slag are burnt together with liquid and gaseous products of pyrolysis. Gas allocated at pyrolysis condense and divide on organic, which is liquid fuel and water phases. Air after a dryer moves to blowing away of light organic substances from the specified water phase, is heated up due to heat of slag and moves in combustion chamber. Washing water goes on allocation of salts of heavy metals and calcium chloride, and slag after molding of a concrete mixture goes to the chamber of thermohumid processing of the slag concrete by a part of damp chimney gases after drying calcium chloride, other part of gases moves to manufacture of liquid carbon dioxide.

The invention discloses anti-cracking mass concrete which is characterized by comprising the following components in parts by weight: 160-180 parts of water, 140-230 parts of cement, 105-128 parts offly ash, 80-90 parts of mineral powder, 980-1230 parts of macadam, 600-690 parts of sand, 8.8-9.3 parts of an admixture and 30-34 parts of a fibrous anti-cracking water-proofing agent. The cracking resistance of the mass concrete is improved by improving the ratio of the components in the concrete.

The invention discloses a method for source modification treatment of fluoro-gypsum which comprises the steps of, (1) raw material selection, charging composite active triggering agent and alkaline material into the fluoro-gypsum, wherein the mass fraction of each components are, fluoro-gypsum 93-97, composite active triggering agent 1-2, alkaline material 2-5, (2) agitating and mixing, transferring to rainproof yard, stewing, (3) stacking, trickling and maintaining. The modified fluoro-gypsum is applied to cement production.

The invention discloses a handicraft clay sculpture material. The handicraft clay sculpture material is prepared from the following raw materials in parts by weight: 2-3 parts by weight of borax, 1-2 parts by weight of ammonium dihydrogen phosphate, 4-6 parts by weight of magnesium oxide, 0.5-1 part by weight of aluminum chloride, 0.5-1 part by weight of sodium humate, 50-60 parts by weight of kaolin, 10-20 parts by weight of calcium carbonate, 30-40 parts by weight of quartz powder, 10-20 parts by weight of white mica powder, 1-3 parts by weight of gypsum, 0.5-1 part by weight of hydroxyethyl cellulose and water, wherein the total amount of the water is the required amount for realizing a dough-like plastic state of a product. The handicraft clay sculpture material disclosed by the invention can be used under any conditions, has the advantages of reasonable and scientific formula, easiness in obtainment of the raw materials, low cost and easiness in dispersion and stirring, the surface of a work is less prone to cracking in a hardening process and is dense and smooth, and the handicraft clay sculpture material can be widely used in the fields of sculptures, clay sculptures, models and the like. The invention further discloses a preparation method of the handicraft clay sculpture material, and the preparation method has the advantages of simple process steps and strong operability.

The invention belongs to the field of building materials and particularly relates to a molybdenum tailing aerated concrete block and a manufacturing method thereof. The molybdenum tailing aerated concrete block comprises, by weight, 65-78% of molybdenum tailings, 12-18% of quick lime, 5-18% of cement, 2.92-4.91% of gypsum and 0.08-0.09% of aluminum paste. The manufacturing method includes the following steps of (1) pre-processing raw materials; (b) crushing and grinding the quick lime to obtain quick lime powder; (c) preparing 8-10% aluminum paste suspension liquid by using the aluminum paste; (2) dosing and pouring; (3) precuring; (4) demolding and cutting; (5) steaming. The molybdenum tailing aerated concrete block is light in texture and good in thermal insulation property, has high compressive strength, overcomes the defect that a powder ash aerated concrete block is low in compressive strength, can replace clay bricks completely and is wide in use range. The method is simple in process and low in product energy consumption.

The invention provides an anti-skid colored paving material for roads, and a preparation method and a construction process of the paving materials. The anti-skid colored paving material for roads comprises the following components in parts by weight: 40-50 parts of polymethyl methacrylate resin, 10-20 parts of calcium carbonate, 1-5 parts of nano silicon dioxide, 2-5 parts of inorganic pigment, 5-15 parts of bauxite and 5-8 parts of quartz sand. The anti-skid colored paving material for roads provided by the invention has a shortened hardening time, and the bauxite with excellent acid resistance, alkali resistance and chemical resistance is used as the main material, so that an original working procedure of additional removal of anti-skid aggregates can be omitted, and the problems that the aggregate easily peels off from the paving material and uniform spreading is difficult due to uneven aggregate shape existed in the additional removal of the aggregates can be solved. Pre-mixing iscarried out for coating the aggregate with the quartz sand, the aggregate does not fall off easily, the drying time is faster, the traffic condition can be reached only in one hour, and the traffic pressure is greatly reduced.

The invention discloses a concrete early strength agent and a preparation method thereof. The concrete early strength agent is prepared from the following components in parts by weight: 1-3 parts of sodium chloride, 1-3 parts of sodium nitrite, 10-20 parts of sodium sulfate, 3-6 parts of calcium chloride, 2-6 parts of urea, 5-15 parts of methacrylic acid, 1-3 parts of silane, 1-5 parts of calcium gluconate, 1-5 parts of triisopropanolamine, 5-10 parts of fatty glyceride, 50-80 parts of polycarboxylate superplasticizer and 2-4 parts of finely grinded cement stone. The concrete early strength agent has the beneficial effects of rapidly drying concrete even in a low-temperature environment.

The domestic laundry treating machine according to the invention is preferentially a front-loading washing machine. Said machine has a washing drum (2) driven by an electric motor and a belt drive between the washing drum (2) and the electric motor, in which the washing drum (2) is firmly connected to a drive shaft (3), and the drive shaft (3) is connected to a pulley (12) of the belt drive, wherein the pulley (12) is provided with a flange (11) having an internal thread (10) in the region of the connection to the drive shaft (3). In addition, the end (8) of the drive shaft (3) facing away from the washing drum (2) is preferentially provided with a shallow pot-like depression (13) and has an external thread (9) engaging in the internal thread (10). Moreover, both threads (9, 10) are connected non-detachably, in particular bonded, to one another.

The invention provides a building material and a preparation method thereof, and relates to the field of materials. The building material comprises the following raw materials in parts by weight: 11 parts of asphalt, 15 parts of bauxite, 10 parts of tricalcium silicate, 6 parts of polypropylene resin, 8 parts of quartzite, 7 parts of calcium acetate, 12 parts of abandoned polyethylene foam plastic, 10 parts of abandoned polyurethane foam plastic, 13 parts of vermiculite, 8 parts of coal ash, 14 parts of activated carbon, 13 parts of bamboo carbon, 7 parts of expanded and vitrified microspheres, 15 parts of glass wool, 7 parts of ceramic fiber, 8 parts of polyarmide fiber, 14 parts of a light stabilizer, 0.4 parts of a heat stabilizer, 0.5 parts of a foaming agent, 0.4 parts of a retarder, 0.7 parts of a water reducer and 9 parts of water. The preparation method comprises the following preparation steps: (1) weighting of raw materials; (2) grinding of the raw materials into powder; (3) heating; (4) calcinating; (5) smashing; (6) stirring; (7) pressure forming; (8) drying. According to the building material, the problem of defects of the existing building material when the existing building material is applied to a building with high requirements for fracture resistance and compression resistance strength, heat insulation, environmental protection and energy saving is solved.

The present invention comprises a jointing head 1, a robot with this jointing head 1, and a fastening method for affixing fastening elements 9 to a component surface B. The jointing head 1 comprises a gripper 30 that removes fastening elements 9 from a removal position E of a cartridge 70 by means of a pivoting movement. In addition, the jointing head 1 comprises a compensation mechanism 40 of the gripper 30 so that, when the fastening element 9 is mounted on a component surface B, the fastening element 9 is optimally arranged adjacent to a hardening source 60 such as a light source.

The invention discloses a weather-resistant high-strength environment-friendly antique-imitation brick. The weather-resistant high-strength environment-friendly antique-imitation brick is prepared from the following raw materials in parts by weight: 10-20 parts of blue stone powder, 3-7 parts of antique-imitation auxiliaries, 7-9 parts of blast-furnace slag, 5-7 parts of steel slag, 4-8 parts of coal gangue, 10-14 parts of purified landfill, 8-12 parts of waterproof latex, 6-8 parts of tackifying additives, 13-15 parts of ore powder, 10-14 parts of fine sand and 7-11 parts of silicate cement. The environment-friendly antique-imitation brick disclosed by the invention has excellent performance in imperviousness, corrosion resistance and freeze-thaw resistance, the compression strength is relatively high, the appearance is pure in color and full in antique tone, and the environment-friendly antique-imitation brick has a realistic effect when the environment-friendly antique-imitation brick is applied to the repair or imitation of antique buildings; meanwhile, by adopting a large amount of industrial and agricultural wastes, the resources are saved, the cost is reduced, the raw materials are readily available, the process is simple, and the environmental hazards are effectively reduced, so that the preparation method disclosed by the invention has a relatively high practical value and a good application prospect.

The invention provides a high-strength erosion-resistant ladle self-flow castable and a preparation method thereof. And steel ladle self-flowing castable is calculated according to parts by mass. Thepreparation raw materials comprise the following components in parts by weight: 5-40 parts of chromium corundum aggregate, 20-70 parts of washed corundum aggregate, 5-40 parts of white corundum fine powder, 1-15 parts of fused magnesite fine powder, 1-25 parts of low-sodium alpha alumina micro powder, 110 parts of pure calcium aluminate cement, 0.1-5 part of zirconium composite silicon micro powder, 0.1-5 part of a delayed coagulation type water reducing agent and 0.01-0.5 part of organic fibers. The self-flow castable has high strength, good erosion resistance and slag erosion resistance, andcan solve the problems of poor fluidity, segregation, no erosion resistance, no erosion resistance and the like of corundum self-flow castables in the use process.

The invention provides a fireproof and heat-insulating building material and a preparation method thereof, and relates to the field of building materials. The fireproof and heat-insulating building material comprises nanometer silicon carbide, stearyl alcohol, sepiolite powder, asbestos, calcium silicate powder, polyurethane, silk fibroin fibers, 1,4-butylene glycol, waste polyethylene plastics, phosphate slag, diatomaceous earth, activated carbon particles, glass wool, a cementing material, a set retarder, a thickener, a foaming agent, a water reducer and water. The preparation method comprises the following steps: (1) weighing of above raw materials; (2) crushing; (3) stirring; and (4) casting molding, demolding, piling and curing. The fireproof and heat-insulating building material prepared in the invention has the advantages of good heat insulation property, good fireproof property, environmental protection, energy saving and high compressive strength.

The invention provides a quick repairing material of an airfield pavement and a road, and a preparation method and a construction method of the quick repairing material. The quick repairing material comprises the following ingredients in parts by weight: 30-35 parts of polymethyl methacrylate resin, 10-15 parts of calcium carbonate, 5-10 parts of bentonite, 1-5 parts of nano silicon oxide, 10-20 parts of quartz sand, 2-5 parts of inorganic pigment, 0.5-1 part of an anti-settling agent, 0.5-1 part of a thickening agent, 5-10 parts of bauxite and 5-10 parts of carborundum. The material takes thepolymethyl methacrylate resin, the bauxite, the bentonite, the thickening agent, the anti-settling agent, the quartz sand and the carborundum as main materials, has excellent performance of fast curing within 1h at -30 DEG C, ultra-high cohesion, excellent crack resistance, acid resistance, alkali resistance and chemical resistance; emission of VOCs (volatile organic compounds), heavy metals andthe like is lower; the environmental pollution is reduced; the problems of defects such as cracks, dusting and damage of a maintenance surface are avoided; and the traffic efficiency of the road is greatly improved.

The invention provides an energy-saving environment-friendly wall body material and a preparation method thereof, and relates to the field of building materials. The energy-saving environment-friendly wall body material is prepared from the following raw materials in parts by weight: 15 to 19 parts of fine sand, 30 to 40 parts of crushed stone, 18 to 30 parts of cement, 10 to 15 parts of waste polyurethane foam plastic, 9 to 17 parts of waste extruded sheet, 15 to 20 parts of bamboo charcoal, 5 to 9 parts of ceramic fiber, 8 to 14 parts of polyamide fiber, 3 to 5 parts of attapulgite, 12 to 16 parts of phenolic foam, 11 to 17 parts of vermiculite, 0.2 to 0.4 part of bonding agent, 0.7 to 1.1 parts of thermal stabilizer, 0.3 to 0.5 part of air entraining agent, 0.2 to 0.6 part of retarder, 0.3 to 0.7 part of water reducing agent, and 3 to 7 parts of water. The preparation method comprises the following steps: (1) weighting the raw materials; (2) calcining the vermiculite; (3) smashing the mixed materials; (4) preparing a mixture; (5) preparing mixed slurry; (6) casing, demolding and curing. The energy-saving environment-friendly wall body material prepared by the method provided by the invention has the advantages of high compressive strength, high tensile strength, high heat preservation and insulation performance, energy saving and high environmental friendliness.

An ink and a manufacturing method thereof are revealed. The ink includes nanoparticles treated by wet-grinding and surface modification and ultraviolet curing resin, mixed with each other evenly. The ink is applied to manufacturing processes of ink patterns formed by screen printing and followed by chemical plating and horizontal thickening process to add up a conductive layer, especially suitable for manufacturing processes of antennas of RFID systems.

An environment-friendly magnesian dry material comprises sintered magnesia, fused magnesia, calcium forsterite, a binding agent, aluminum hydroxide micro powder, a high-temperature sintering agent, anexpanding agent, floating beads and bentonite in a mass ratio of (60-75): (20-30): (8-10): (15-25): (8-12): (2-4.5): (1-2): (0.5-1.5): (0.8-1.2). According to the invention, the proportion of each component of the dry material is optimized; by adopting the environment-friendly binding agent, the problem that the binding agent is decomposed into toxic and harmful substances under a high-temperature condition can be effectively solved, the dry material is more energy-saving and environment-friendly, the hardness requirement of the dry material in the using process can be ensured on the premisethat the dry material has no pungent smell in the using process and is more beneficial to the production environment, and the scouring resistance of the dry material is ensured.

The invention provides a waterproof closed-cell expanded perlite which is prepared by the following steps of: matching silica sol, water glass, a waterproof agent, cement powder, a curing agent and water in parts by weight, and uniformly mixing to prepare a waterproof closed-cell sizing agent; then uniformly spraying the waterproof closed-cell sizing agent to the surface of an expanded perlite, and then drying or airing the expanded perlite to obtain the waterproof closed-cell expanded perlite, wherein 215.1-262.9 kilograms of the waterproof closed-cell sizing agent is sprayed to the expanded perlite per cubic metre. The waterproof closed-cell expanded perlite has the outstanding advantages of light capacity, good heat insulation property, waterproofness, good affinity, high compression strength, extensive usage temperature, high chemical stability, innocuity, odourless, incorruption and non-inflammation, acid-alkali resistance, simple preparation process and low cost, thereby being an ideal building heat insulation material.

The invention relates to hardening-time-controllable magnesium oxysulfate cement and a preparation method of a hardening-time-controllable magnesium oxysulfate cement plate. The cement is prepared from the following raw materials in parts by weight: 30 to 60 parts of active magnesia, 30 to 70 parts of magnesium sulfate, 0.5 to 2 parts of modifying agents, 5 to 10 parts of light perlite, 10 to 20 parts of hemihydrate gypsum and 5 to 10 parts of citric acid. A transfer film is laid on a glass plate; cement and water are weighed; the magnesium sulfate is firstly dissolved into water; then, the magnesium sulfate is uniformly mixed with other raw materials to form material slurry; the material slurry is poured onto the transfer film; flat spreading is performed; the maintenance is performed for 15 to 30 hours at the normal temperature; demoulding is performed; the transfer film is removed; a finished product is obtained. The prepared decoration plate does not deform, does not crack and does not generate halogenide; the initial setting time can be controlled to be longer than 30 minutes; the final setting time is controlled to be within 1 hour.