45results about How to "Adjustable setting time" patented technology

The invention relates to an inorganic composite heat insulation material, which is prepared from the following raw materials in part by weight: 100 parts of common silicate cement, 10 to 30 parts of quick hardening sulfate aluminum cement, 10 to 30 parts of gypsum powder, 10 to 40 parts of admixture, 20 to 40 parts of mineral fiber, 150 to 200 parts of vitrified micro bubbles, 4 to 8 parts of re-dispersible latex powder, 2 to 4 parts of cellulose ether, 0.1 to 0.3 part of starch ether, 0.2 to 1.0 part of water reducing agent, 0.2 to 0.6 part of retarder, 1 to 3 parts of early strength agent, 0.5 to 3 parts of water repellent, and 0.02 to 0.06 part of air entraining agent. The raw materials are mixed uniformly to prepare dry powder, and the dry powder and water are mixed in a weight ratio of 1: (0.8-1.2) and stirred to form slurry for use. The inorganic composite heat insulation material has good workability, quick strength development, high construction efficiency, good adhesive property, low drying shrinkage, heat insulation, hydrophobic property, fire resistance and durability.

A fly ash solidification foamed material for preventing coal spontaneous combustion and a preparation method thereof. The fly ash solidification foamed material comprises the following ingredients, by weight: 40-60 parts of water, 100 parts of fly ash, 25 parts of complex powder for chemically self-producing gas, 1-5 parts of an accelerator, 1-4 parts of an activator, 0.6-1.5 parts of a water reducer, and 0.5-1 parts of a foam stabilizer. The preparing method comprises: adding the foam stabilizer in water and stirring to form a uniform foam solution; adding the fly ash, the complex powder for chemically self-producing gas, the accelerator, the activator, and the water reducer in a dry-blending mixer to form a blended powder; and finally adding the blended powder into the uniform foam solution to obtain the fly ash solidification foamed material. The material of the invention is light in weight, safe and low in costs, and has strong crack penetration capability, adjustable solidification time, great compressive strength, low heat conductivity coefficient, and a good heat insulation effect; foam fluid can uniformly cover loose coal-rock mass; carbon dioxide is released during a foaming reaction process to well dilute the oxygen concentration in residual coal space; and the operation technique is simple.

The invention discloses a preparation method and application of a modified polyurethane grouting material. The preparation method comprises the following steps that firstly, diluents, isocyanate compounds, water and Portland cement make contact and are evenly mixed to obtain a component A, and polymeric alcohol, foam stabilizers and catalysts make contact and are evenly mixed to obtain a component B; secondly, the component A and the component B make contact and are evenly mixed. The preparation method and application of the modified polyurethane grouting material solve the problems of an existing pure polyurethane grouting material that the cost is high, induration strength is low, and an inorganic grouting material is long in setting time and slow in strength development, and the obtained material is low in cost, adjustable in setting time, high in foaming induration strength, good in permeability and environmentally friendly.

The invention discloses a hole sealing grout stop material, which is a hole sealing grout stop material for guaranteeing grouting pressurization under the condition of loose permeable rock-soil body, high underground level or confined water. The hole sealing grout stop material is mainly prepared from clay primary grout, cement and sodium metaaluminate, wherein every 2 L of clay primary grout is mixed with 700-900 g of cement and 12.5-17.5 g of sodium metaaluminate. A grouting hole sealing process comprises hole sealing operation and grouting operation, wherein the hole sealing operation specifically comprises the following steps of: after forming a hole, dropping a grouting pipe to the bottom of the hole and mounting a orifice closer; opening the orifice closer and injecting the hole sealing grout stop material; closing the orifice closer and flushing the grouting pipe by using stable grout; and opening the orifice closer, performing grouting operation after solidifying the hole sealing grout stop material, and guaranteeing reliable hole sealing grouting through continuous lift grouting. The grouting hole sealing process has the advantages of simple steps, less equipment investment, high applicability, capabilities of guaranteeing the reliability of the hole sealing grout and increasing the grouting efficiency and the like.

The invention relates to an underground two-fluid grouting device comprising a grouting inner tube and a grouting outer tube which are nested together, wherein the grouting inner tube and the grouting outer tube are two independent closed pipelines. The grouting inner tube comprises a high-pressure rubber hose joint I, a short tube I, a seal joint, a drill rod and an injector which are sequentially connected, wherein the components are connected to form a closed grouting pipeline, and the short tube I is provided with a check valve I. According to the invention, the drill rod and a drill hole water stopping sleeve are used for being respectively taken as a fluid conveying pipeline, double-tube grouting is realized, depth of a grouting tube in a drill hole is changed for adjusting a position at which two fluids are mixed and the operation time of the mixed fluid in the drill hole, and the aims of adjusting two-fluid solidification time in a deeper drill hole and eliminating a bad result that the drill hole is blocked by the fluid are achieved, so that a better grouting effect is guaranteed.

Disclosed is a hydraulically and chemically bonding refractory cement, which includes a caustic magnesia component having a BET specific surface area of at least 0.5 m²/g, and a carboxylic acid component, wherein the carboxylic acid component consists of at least one carboxylic acid that is only slightly water soluble and/or has a low dissolution rate in aqueous solutions, and which carboxylic acid component is capable of generating at least one soluble magnesium salt upon contact of the cement with water. Also disclosed is a corresponding refractory material containing the magnesia cement and to uses thereof for the manufacture of products useful in various industries.

The invention relates to a multifunctional concentrated material used for preparing a kitchen and bath cement-based waterproof material. The multifunctional concentrated material is composed of waste rubber powder, a silane coupling agent, alcohol blend, high-alumina cement, redispersible latex powder, cellulose ether, a delayed coagulant, a coagulation accelerator, a water reducer, an anti-freezing agent (added in winter), and a water repellent, and is a one-component material. The cement-based waterproof material is prepared by mixing the multifunctional concentrated material with cement and quartz powder; is used for kitchen and bath waterproof construction; possesses both excellent characteristics of waterproofing coatings and waterproof mortars, and excellent waterproof performance, so that waterproof effect can be achieved just by a thin coating layer in construction; and also possesses excellent rigidity which is convenient for paving of tiling in following procedures, and is suitable for waterproofing of waterward sides and water lee sides. Addition of waste rubber powder is capable of reducing density of the polymer cement waterproof material, increasing spreading rate of waterproof coatings, changing waste into valuables, and realizing recycling of resources.

The invention discloses a high-strength consolidation lost circulation additive, which consists of the following components in parts by weight: 20-40 parts of calcium carbonate, 5-10 parts of silicon dioxide, 1-4 parts of calcium chloride, 0.1-0.4 part of polyanionic cellulose, 0.1-0.2 part of an XC biopolymer, 5-10 parts of aluminum oxide, 3-8 parts of magnesium oxide and 10-16 parts of oil well cement. The lost circulation additive is prepared by carrying out the following steps: adding the components into a kneading machine based on the parts by weight at normal temperature and under normal pressure according to the conventional preparation method; mixing and stirring uniformly; drying; smashing into a powdery product being 0.01-0.2 millimeter in particle size. The high-strength consolidation lost circulation additive has the characteristics of wide raw material source, high strength, strong suspending power, high mobility, high pumpability, condensing and plugging capabilities, high minimum inflation performance, high solubility, high leakage plugging success rate, simple process and safety in construction, is widely applied to petroleum and geological drilling processes, and is particularly to be applied to fractured hard formations and karst cave formations.

The invention discloses a method for preparing a nano high-strength gypsum 3D printing material; the method comprises the steps: adding water and a crystal grain length controlling agent into gypsum, mixing by a ball mill, and sending the mixture into a water steam phase change ultrafine mill, to obtain nano gypsum; or adding gypsum, water, a nucleation agent and a crystal grain length controlling agent into a reaction kettle, carrying out a hydrothermal reaction, carrying out liquid-solid separation to obtain hemihydrate gypsum, and crushing and drying the hemihydrate gypsum to obtain nano gypsum; or adding gypsum into an autoclave, adding water and a crystal grain length controlling agent, carrying out a hydrothermal reaction to obtain hemihydrate gypsum, and crushing and drying the hemihydrate gypsum to obtain nano gypsum; and adding a setting time controlling agent, a surface modifier, a mortar additive and an enhancer into the obtained nano gypsum, and mixing evenly, to obtain gypsum ink. When the gypsum ink is used, a solvent is added to the gypsum ink and mixed evenly. The product is low in cost and good in performance.

The invention discloses a composite resin water blocking material and a preparation method thereof. The composite resin water blocking material comprises the following raw materials in percentage by mass: 3-9% of a formaldehyde solution, 1-4% of phenol, 1-5% of salicylic acid, 0.05-0.3% of sodium hydroxide, 0.5-3% of hydrolyzed polyacrylamide, 0.1-0.5% of a phenolic aldehyde cross-linking agent, 0.2-0.4% of a stabilizer and the balance of water. The preparation method comprises the following steps: putting water and phenol into equipment, heating to 60 DEG C, after the phenol is sufficiently molten, adding sodium hydroxide, and stirring for 30 minutes; adding the formaldehyde solution, heating to 80 DEG C, and continuously stirring for one hour; adding the salicylic acid, and stirring for30 minutes at a constant temperature; adding the hydrolyzed polyacrylamide, and stirring for 2 hours; adding the phenolic aldehyde cross-linking agent, uniformly stirring, and keeping a constant temperature of 90 DEG C, thereby obtaining the composite resin water blocking material 12 hours later. The composite resin water blocking material is applicable to oil-water well water blocking of a low permeability reservoir at a mineralization degree (200,000 mg/L or less) at a temperature (25-120 DEG C), the producible oil index can be increased by 50% or greater, the oil-water well water blocking cost can be lowered, and the economic benefits of oilfield development can be increased.

The invention relates to a chemical field, and relates to a preparation method and application of a water glass modified fiber. The preparation method comprises the following steps: grinding dry plant straw or wood slices with barks, spraying a coupling agent into a coarse blend fiber under a vacuum stirring condition, continuously stirring, pressurizing and stirring; then decompressing and vacuumizing, spraying a mixture after water glass is mixed with a water glass coagulating agent, and maintaining vacuum stirring; then pressurizing and stirring; slowly decompressing, then putting in a fluidized bed for drying, obtaining a primary modified fiber after drying, spraying the coupling agent into the primary modified fiber, and uniformly mixing to obtain a secondary modified fiber. A high density board produced by using the modified fiber has the advantages of high density, high strength, small using amount of adhesive and fiber saving, a great number of plant straw smashed fibers can be used, the production cost is greatly reduced, meanwhile the board quality is improved, no waste water or waste residue is discharged in the production process, and the environment is protected; therefore, the water glass modified fiber has great popularization values.

The invention provides an inorganic binding material for assembled prefabricated parts, and a preparation method and an application thereof. The inorganic binding material is prepared from a componentA and a component B, wherein the component A comprises, by weight, 50-100 parts of a magnesium compound, 15-35 parts of fly ash, 0.5-1.5 parts of a superplasticizer and 6-12 parts of a composite retarder; and the component B comprises, by weight, 15-30 parts of phosphate, 50-120 parts of quartz sands, 0.5-5 parts of fibers, 1-3 parts of a waterproofing agent and 3-6 parts of a pH stabilizer. Theinorganic binding material for assembled prefabricated parts has the advantages of adjustable solidification time, high bonding strength, high tensile strength, good bonding durability, low shrinkage,good weather resistance, good high temperature resistance, low cost and environmental friendliness.

A cellular structure thermal insulation material includes by weight as compared to the material total weight:

• • from 4 to 96% of a hydraulic binder, which prior to being contacted with water, includes at least one phase selected from C3A, CA, C12A7, C11A7CaF2, C4A3$ (Yee lemite), C2A(1-x)Fx (where x belongs to [0, 1]), hydraulic amorphous phases having a C/A molar ratio ranging from 0.3 to 15 and such that cumulated amounts of Al2O3 of these phases be ranging from 3 to 70% by weight of the hydraulic binder total weight,
  • from 4 to 96% of at least one filler,
  • the material having a pore volume ranging from 70% to 95%. The use of a mineral foam for making thermal insulation material as well as methods for making the mineral foam are also described.

The invention discloses external-wall door and window rapid waterproof repairing mortar and a preparation method thereof. The external-wall door and window rapid waterproof repairing mortar comprisesthe following components in parts by weight: 250-350 parts of ordinary Portland cement, 100-150 parts of sulphoaluminate cement, 7-10 parts of calcium oxide, 150-200 parts of water, 20-30 parts of metakaolin, 30-60 parts of filler, 300-400 parts of quartz sand, 1.5-2.5 parts of cellulose ether, 1.5-2.5 parts of wood fiber, 0.5-1.5 parts of water reducing agent, 5-15 parts of rubber powder, 3-8 parts of calcium formate, and 2-5 parts of retarder. The external-wall door and window rapid waterproof repairing mortar has the advantages of less components, low raw material cost, no shrinkage, micro-expansion function, no cracking, high density, high strength and leakage resistance.

The invention belongs to the technical field of tunnel and coal seam mining, and provides a controllable grouting liquid for coal mining and tunnel engineering and a preparation method thereof for solving the problems that the current grouting liquid is not easy to enter cracks and easy to block grouting holes and the like. The controllable grouting liquid is prepared by mixing ultrafine sulfate cement, redispersible emulsion powder, a high-efficiency water reducer FDN, nano-silica, calcined gypsum, alunite powder, lithium carbonate, wooden calcium and water according to in a certain ratio. The controllable grouting liquid has the advantages that raw materials are easy to obtain, the condensation rate of the grouting liquid is controllable, the workability is good, the pumping effect is good, the water repellency is low, the surface hardness is high, the later strength is stable and does not shrink, the production cost is low, the construction speed is high, the work efficiency is high, and the environment is protected. The grouting liquid can be effectively poured in micro-cracks, is capable of enlarging a grouting radius, and is of great significance for the rapid lining supportreinforcement of a tunnel and the pollution-free, safe and efficient mining of coal. With the adoption of the controllable grouting liquid, emergency rescue projects can be dealt with easily, the construction speed is high, the work efficiency is high and the construction time is saved.

The invention relates to the field of medical devices, and discloses a fumigation therapy handpiece and a device with the same. The handpiece comprises a control box, a bottom plate, a connecting pipe, a fixing pipe and a handpiece body. The handpiece body is fixedly connected with the control box through the connecting pipe. The control box is connected with the bottom plate through the fixing pipe. The fumigation therapy device can be oriented at multiple angles and can rotate by 360 degrees to completely free two hands; the functions of automatic spraying, ceramic heating and the like are added, and the handpiece body is controlled through the control box; the fumigation therapy handpiece can adjust the temperature and set the time.