120 results about "Hydroxymethyl cellulose" patented technology

The invention discloses a forming method of a ruthenium-based ammonia synthesis catalyst, and belongs to the technical field of catalysts. Comprising the following steps: mixing ruthenium-based catalyst powder, bentonite and an extrusion aid to obtain powder, and adding deionized water into hydroxymethyl cellulose to form gel; and adding the powder into the gel, fully stirring, putting into an extruder, carrying out molding treatment, and then carrying out vacuum calcination. The prepared ammonia synthesis catalyst with the special-shaped structure has relatively high mechanical strength and relatively low abrasion rate, and the reduction of activity is avoided. The catalyst is used in an ammonia synthesis process, and can maximize the effect of a ruthenium-based catalyst according to the characteristics and requirements of high pressure and high temperature.

A carbon fixation material for adsorbing heavy metals in soil and a preparation method thereof are provided. The carbon fixation material includes modified biochar, calcium silicate, aluminum sulfate, hydroxymethyl cellulose and urea. The modified biochar is prepared by preparing biochar from agricultural and forestry waste, and modifying the biochar with ferric chloride and a mercapto silane coupling agent. The carbon fixation material has excellent carbon fixation capacity, the biochar is prepared by processing agricultural and forestry waste, the material source is green and environmentally friendly, can reduce environmental pollution. After modified by ferric chloride and mercapto silane coupling agent, the biochar has excellent adsorption amount and adsorption capacity for heavy metal ions and has strong retention capacity after adsorption, the modified biochar can be widely used in soil carbon fixation and heavy metal pollution treatment.

The invention discloses a lead-sodium storage battery positive electrode lead paste in the technical field of storage batteries. The lead-sodium storage battery positive electrode lead paste comprises the following components in parts by weight: 100 parts of lead oxide powder, 6-10 parts of sulfuric acid, 14-24 parts of deionized water, 0.05-0.07 part of short fibers, 2-8 parts of lead dioxide, 1-2 parts of tetrabasic lead sulfate, 0.5-1.5 parts of calcium sulfate, 0.05-0.15 part of stannous sulfate, 0.05-0.15 part of antimony trioxide, 0.5-1 part of carbon black, 0.1-0.2 part of carboxymethyl cellulose sodium and 0.1-0.5 part of a mixed carbon material. By improving the design of the process, the formation efficiency and low-temperature performance of the storage battery can be effectively improved, and the service life of the storage battery can be effectively prolonged.

The invention discloses a wear-resistant high-gloss nano liquid, a wear-resistant high-gloss ceramic tile and a preparation method of the wear-resistant high-gloss ceramic tile, and belongs to the technical field of ceramic manufacturing. The wear-resistant high-gloss nano liquid at least comprises a component A, a component B and a component C which are independently subpackaged, wherein the component A comprises large-particle silica sol, boric acid, sodium methyl silicate, carboxymethyl cellulose sodium, a boronizing stabilizer and the balance of water; the component B comprises a boronizing stabilizer and the balance of water-based modified silicone oil; and the component C is wax emulsion. Through systematic material and process innovation, the ceramic tile which is high in gloss, strong in antifouling property, durable in wear resistance and high in transportation performance is prepared, and the market requirements of surface treatment materials which are high in performance, low in cost and easy to transport are met.

The invention relates to amino silicone oil emulsion as well as a preparation method and application thereof, and belongs to the technical field of silicone oil emulsion. A preparation method of the amino silicone oil emulsion comprises the following steps: mixing amino silicone oil, cocamidopropyl betaine and polyether modified silicone oil to obtain a homogeneous oil phase, adding deionized water in a gradient manner, and carrying out double refining to obtain a homogeneous phase; 3-aminopropyltrimethoxysilane and polyether modified polydimethylsiloxane are added for treatment, a modified homogeneous phase is obtained, hydroxymethyl cellulose and porous nano-silica are added, and mixing is performed to obtain the coating. Through compounding of the amino silicon oil, the cocamidopropyl betaine, the polyether modified silicon oil, the amino propyl trimethoxy silane, the polyether modified polydimethylsiloxane and the porous nano silicon dioxide, the stability of the amino silicon oil is synergistically improved, and the fabric is endowed with good flexibility and durability.

The invention discloses premixed flow-state solidified soil and a preparation method thereof, and the premixed flow-state solidified soil comprises the following components in parts by weight: 100 parts of silty clay; 8 to 15 parts of a curing agent; 48 to 90 parts of water; wherein the curing agent comprises the following components: 10 to 15 parts of sulphoaluminate cement; 40 parts to 55 parts of superfine steel slag powder; 30 to 40 parts of fly ash; 0.5 to 1.5 parts of sodium silicate; 0.1 to 0.3 part of a foaming agent; 0.1 part to 0.2 part of sodium thiocyanate; 0.1 part to 0.2 part of hydroxymethyl cellulose; 0.05 part to 0.2 part of triisopropanolamine; 0.1 part to 0.5 part of calcium nitrate; and 0.5 to 1 part of a polycarboxylic acid water reducing agent. The preparation method of the premixed flow-state solidified soil is suitable for using silty clay as a raw material, and greatly improves the strength, compactness, fluidity and other properties of the premixed flow-state solidified soil.

The invention relates to the technical field of lithium battery diaphragms, and provides ceramic affinity type lithium battery diaphragm organic coating slurry and a preparation method and application thereof.The ceramic affinity type lithium battery diaphragm organic coating slurry is prepared from, by weight, 10-12 parts of deionized water, 1-3 parts of ceramic microcapsule particles, 0.1-0.3 part of hydroxymethyl cellulose lithium and 0.5-1 part of solid electrolyte; core materials of the ceramic microcapsule particles are ceramic particles, and wall materials of the ceramic microcapsule particles are organic polymers; the preparation method of the ceramic microcapsule particles comprises the following steps: S1, dispersing deionized water, ceramic particles and a dispersing agent, uniformly stirring, introducing nitrogen, sequentially adding a lithium salt, a coating agent and a pore forming agent, then adding PVDF powder and PMMA powder, and mixing to obtain a pre-agglomerated solution; and S2, carrying out spray drying granulation on the pre-agglomerated liquid to obtain the ceramic microcapsule particles. According to the technical scheme, the problems of insufficient heat resistance and safety of the lithium battery diaphragm in related technologies are solved.

The invention discloses a PET solid medicinal hard sheet and a preparation method thereof, the PET solid medicinal hard sheet comprises PET, a stabilizer, a plasticizer, a lubricant and an antioxidant, the stabilizer comprises a modified nano titanium carbide sheet, hydroxymethyl cellulose and a stability regulator, the modified nano titanium carbide sheet contains Ti3C2A, and A is an oxygen-containing or fluorine-containing functional group. According to the invention, the interaction between the modified nano titanium carbide sheet and hydroxymethyl cellulose is utilized to form a sheet-line combined structure with a limiting effect on the plasticizer, so that the emigration rate of the plasticizer is greatly reduced, and meanwhile, the stability of the material is also well promoted.

The application discloses an anode catalyst layer and a preparation method thereof and a membrane electrode, relates to the technical field of proton exchange membrane water electrolysis, and the anode catalyst layer is a single-layer structure and is prepared from an anode catalyst slurry after drying, the anode catalyst slurry comprises the following components in parts by weight: 0.05-10 parts of a polymer compound; 0.5-10 parts of an iridium catalyst; 0.5-12 parts of a perfluorosulfonic acid resin; and 5-120 parts of a solvent; wherein the polymer compound is used to form a reinforcing structure in the anode catalyst layer, the polymer compound comprises at least one of sodium hydroxymethyl cellulose, polyvinylidene fluoride, polyacrylic acid, polyimide or butadiene styrene rubber, and the mass of the polymer compound is 20-100% of the mass of the anode catalyst. By introducing the polymer compound, the mechanical performance and electrochemical performance of the membrane electrode can be improved.

The invention discloses a degradable packaging material capable of controlling the release rate of fertilizer nutrients and a preparation method of the degradable packaging material, and relates to the technical field of agricultural packaging. The material is composed of a base material layer, a slow-release regulation and control layer and a degradation promotion layer, the base material layer provides mechanical support and barrier property, the slow-release regulation and control layer realizes accurate release of nutrients, and the inner surface of the degradation promotion layer is loaded with lipase and carboxymethyl cellulose sodium or a polyvinyl alcohol binder to accelerate degradation. The preparation adopts a multi-layer co-extrusion blow molding blank making and enzyme solution spraying post-treatment process, and the steps are clear and controllable. The material is adjustable in nutrient release, degradable and residue-free after use, suitable for various crop fertilization scenes, capable of improving the fertilizer utilization rate and reducing environmental pollution, and remarkable in practical value, and the mechanical property meets the packaging and transportation requirements.

The application discloses a polymer repair mortar for marine concrete and a preparation method thereof. The polymer repair mortar comprises dry powder mortar and a composite modified polymer. The dry powder mortar comprises 525 cement, an expanding agent, high-activity metakaolin, sand, a water reducing agent, a defoaming agent, latex powder and modified polypropylene fibers. The composite modified polymer comprises water-based epoxy resin, graphene, sodium hydroxymethyl cellulose and amide modified hydrogenated castor oil. The dry powder mortar and the composite modified polymer are mixed uniformly to obtain the polymer repair mortar. The polymer repair mortar improves the impermeability and impact resistance of the repaired marine concrete. The composite modified polymer can form a dense waterproof protective film on the surface of the mortar, effectively reducing the influence of the dry-wet cycle of the sea, chloride ion corrosion and the impact of sea waves. In addition, the adhesion between the repair mortar and the marine concrete matrix is further improved.

The preparation method comprises the following steps: mixing NaOH, 3, 5-pyrazole-di-carboxylic acid-1-hydrate and water, dissolving to obtain a solution I, dissolving an aluminum salt in water to obtain a solution II, adding the solution II into the solution I, uniformly mixing, carrying out a hydrothermal reaction, and carrying out centrifugal filtration to obtain a solid MOF-Al; the preparation method comprises the following steps: uniformly mixing MOF-Al powder, carbon black nanoparticles and hydroxymethyl cellulose with water to prepare a soft material, granulating the soft material, and drying at 40 DEG C to prepare moisture-retaining particles; and adding the moisture-retaining particles into the filter stick to obtain the moisture-retaining filter stick. The carbon black nanoparticles in the filter stick rapidly absorb heat of smoke passing through the filter stick and promote the MOF-Al material to release moisture, so that the moisture in the smoke is increased, excessive dryness of the oral cavity and the throat caused by smoking is avoided, the discomfort of a smoker is relieved, and the smoking experience of a consumer is improved.

The invention discloses lightweight water-resistant gypsum plastering mortar and a preparation method thereof, the mortar takes beta-semi-hydrated phosphogypsum as a main raw material, and the main raw material is compounded with slag, silica fume and cement to form a composite gel system; and modified vitrified microbeads, sodium citrate, hydroxymethyl cellulose ether, attapulgite, dispersible latex powder, an air entraining agent, a waterproof agent and other functional additives are combined to prepare the coating. The mortar has good compressive strength, flexural strength and bonding strength, solves the problems of low strength, poor water resistance, unstable construction performance and the like of traditional gypsum mortar, realizes high-dosage resource utilization of phosphogypsum, and has the advantages of good water resistance, light volume weight, high strength, no cracking or hollowing and the like.

The invention discloses a composite fiberboard and a preparation method thereof, and belongs to the technical field of artificial boards. Comprising the following raw materials in parts by weight: 34-45 parts of wood fiber, 17-26 parts of composite resin, 7-13 parts of hydroxymethyl cellulose, 5-9 parts of aluminate cement, 4-8 parts of talcum powder, 11-16 parts of polyvinyl alcohol, 9-14 parts of polyvinyl acetate emulsion, 7-11 parts of urea-formaldehyde resin adhesive, 5-9 parts of polyacrylate and 1.2-2.5 parts of a composite coupling agent. According to the composite fiberboard, the water resistance of the composite fiberboard can be improved, and the problem that harmful substances containing formaldehyde and the like are released is solved.

The invention relates to the technical field of ceramic parts, in particular to a ceramic part and a manufacturing method thereof. The ceramic part is prepared from, by weight, 60-80 parts of aluminum oxide powder, 40-60 parts of zirconium oxide powder, 20-40 parts of filler, 6-10 parts of powder, 4-6 parts of polyvinyl alcohol, 2-4 parts of zinc stearate and 1-2 parts of cerium oxide powder. According to the invention, in the high-temperature sintering process, the soybean fibrin and hydroxymethyl cellulose are thermally decomposed, and in the initial heating process, all the materials can be stably combined, the shrinkage rate in the sintering process is reduced, and the stability of the whole structure is improved; hexagonal boron nitride powder can play a good energy conduction supporting role in a material system, pores are filled through cooperation with addition of nano silicon dioxide, so that the structure of a ceramic part is more compact, meanwhile, through a composite phase generated through reaction of boric acid and dicyanodiamide, the sintering temperature can be reduced, excessive coarsening of crystal grains is avoided, and the service life of the ceramic part is prolonged. And the structural strength of the ceramic part is further guaranteed.

The present application discloses a process for preparing a silica gel bag. The process for preparing the silica gel bag comprises the following steps: (1) stirring silica gel, fumed silica / graphene composite material, surface-modified carbon nanospheres, hydroxymethyl cellulose, and a curing agent at a stirring temperature of 60-80°C for a stirring time of 1-3 hours to obtain a mixture; (2) extruding the mixture obtained in step (1) to obtain a sheet, and transporting the sheet to an injection mold for injection molding at an injection temperature of 55-65°C for a time of 30-45 seconds; after the injection molding is completed, removing the mold core, closing the mold, and then inflating the mold core. After the inflation is completed, curing is performed at a curing temperature of 180-200°C for a curing time of 3-6 minutes to obtain a silica gel bag. The silica gel bag prepared in the present application has good mechanical properties, antibacterial properties, and long-lasting antibacterial properties.

The application discloses a preparation method of a hydrocolloid dressing for oral cavity, and relates to the technical field of medical supplies. Baicalin extract and a polyvinyl pyrrolidone solution are mixed to obtain a baicalin extract solution; chitosan fibers, hydroxymethyl cellulose and the baicalin extract solution are mixed to obtain a mixed solution; vacuum degassing: the prepared mixed solution is vacuumized, pressure is maintained, and primary degassing is performed; ultrasonic degassing: the mixed solution after primary degassing is subjected to ultrasonic degassing; static degassing: the solution after ultrasonic degassing is sealed by using a preservative film, and is subjected to secondary degassing at room temperature; a PU film is fixed in a film laying frame, the degassed mixed solution is poured into the film laying frame, and the film laying frame is placed into an air-blowing drying box to solidify and form a protective layer, so that the hydrocolloid dressing is obtained. The hydrocolloid dressing prepared by the method has good adhesion, can be used on a wound for a long time, and can effectively promote the repair of damaged cells and wounds, so that the healing of the wound in the oral cavity is promoted.

The invention belongs to the technical field of coating protection, and particularly relates to a preparation method of a single-component high-temperature fast curing silver-aluminum polymer coating applied to the surface of a coating layer. Comprising 175-180 parts of modified epoxy resin; 95 to 100 parts of flaky aluminum silver powder; 180-200 parts of a mixed solvent of dimethylbenzene and / n-butyl alcohol; 100 to 120 parts of dicyandiamide; 25 to 40 parts of 3-(3, 4-dichlorophenyl)-1, 1-dimethylurea; 10 to 12 parts of sodium molybdate; 4-8 parts of graphite; 1 to 2 parts of polydimethylsiloxane; 2 to 6 parts of a wetting agent HY-352; 3-5 parts of fumed silica; 0.5 to 3 parts of dimethyl silicone oil; and 0.2-2 parts of a hydroxymethyl cellulose agent. The coating disclosed by the invention has the advantages of thin coating, high-temperature rapid curing, relatively good corrosion resistance, good combination with a coating layer and the like, and also has excellent storage stability.

The invention relates to the technical field of building materials, and particularly discloses a special adhesive for internal and external wall flexible tiles and a preparation method thereof. The special glue comprises the following components in parts by weight: 30-50 parts of cement, 60-100 parts of dry sand, 5-10 parts of epoxy resin, 0.05-0.1 part of a curing agent, 1-3 parts of redispersible latex powder, 0.3-1 part of hydroxymethyl cellulose, 1-5 parts of alkenyl silane succinic anhydride and 20-30 parts of water. The special adhesive provided by the invention is suitable for adhesion between organic flexible tiles and inner and outer wall surfaces, especially flexible tiles manufactured by taking organic silicon as a modifier or a binder, and the adhesion strength between the flexible tiles and the inner and outer wall surfaces can be effectively improved.

The invention provides a graphitized carburant and a preparation method thereof, and relates to the technical field of carburant preparation. The graphitization carburant is prepared from pretreated petroleum coke, purified graphite electrode waste, wood charcoal, carboxymethyl cellulose sodium and modified starch, wherein the pretreated petroleum coke is obtained by soaking petroleum coke in alkali liquor, cleaning with ethanol, drying, filling oxygen under the pressure of 3-5 Mpa for high-pressure treatment and calcining; the modified starch is obtained by gelatinizing cassava starch, performing microwave shaping and crushing. According to the method, the defects in the prior art are overcome, the purity of the carburant can be effectively guaranteed, meanwhile, the recarburization effect of the carburant is further improved, and the economic benefit of overall production is improved.

The present invention discloses a Fe 3+ Preparation method and application of catechol-modified quaternary ammonium chitosan-oxidized carboxymethyl cellulose double cross-linked hydrogel. The preparation method is specifically as follows: (1) preparing quaternary ammonium chitosan; (2) preparing catechol-modified quaternary ammonium chitosan; (3) preparing oxidized carboxymethyl cellulose; (4) preparing catechol-modified quaternary ammonium chitosan-oxidized carboxymethyl cellulose composite hydrogel. The present invention also discloses Fe prepared by the method. 3+ Application of a catechol-modified quaternary ammonium chitosan-oxidized hydroxymethyl cellulose double-crosslinked hydrogel. The double-crosslinked hydrogel designed by the present invention does not require the addition of additional chemical reagents. The final product is only water and hydrogel, which does not require purification and is environmentally friendly. The prepared composite hydrogel has good viscoelasticity and strong adhesion, and has great application prospects in wound healing and wound treatment.

The invention belongs to the technical field of agricultural mulching films, and particularly relates to a degradable liquid mulching film and a preparation method and application thereof. The degradable liquid mulching film provided by the invention is prepared from the following raw materials: a polysaccharide material, an ionic surfactant, a polymeric emulsifier, humic acid powder, a preservative, probiotic powder and water. The polysaccharide material comprises one or more of carboxymethyl cellulose, hydroxymethyl cellulose, ethyl cellulose, cellulose acetate and chitin. The polysaccharide material adopted in the degradable liquid mulching film is a natural material, can be degraded in the natural environment and cannot pollute the soil environment, and the ionic surfactant is used for performing hydrophobic modification on the polysaccharide material, so that the scouring resistance of the degradable liquid mulching film can be improved, and soil moisture conservation, water retention and temperature increase of soil are realized.

The invention relates to an electrolyte solution, an all-solid-state electrolyte, a flexible broadband regulation all-solid-state electrochromic device and a preparation method of the flexible broadband regulation all-solid-state electrochromic device. The chemical components of the electrolyte solution comprise resin and hydroxymethyl cellulose; wherein the resin is polyurethane acrylate, preferably at least one of aliphatic polyurethane diacrylate, aliphatic polyurethane dimethyl acrylate and aromatic polyurethane diacrylate.

The invention relates to a high-air-permeability high-adsorption filter valve material, a preparation method and application, and the preparation method of the high-air-permeability high-adsorption filter valve material comprises the following steps: taking activated carbon fiber as a base material, taking hydroxymethyl cellulose and nano activated carbon powder as filling slurry, soaking the filling slurry into pore channels and gap structures of the activated carbon fiber material, and drying to obtain the high-air-permeability high-adsorption filter valve material. And then carrying out extrusion molding and sintering on the activated carbon fiber material until the activated carbon fiber material is fully carbonized to obtain the high-air-permeability and high-adsorption filter valve material. The preparation method of the high-air-permeability and high-adsorption filter valve material is simple in technological process, equipment operability is high, safety and stability of a glass solidified body are higher, and the obtained high-air-permeability and high-adsorption filter valve material has efficient adsorption performance on radioactive aerogel and harmful components and meanwhile has high density, high strength and high air permeability. The high-air-permeability and high-adsorption filter valve material is suitable for being used in a high-integrity container for disposing radioactive waste, and can ensure high air permeability and realize adsorption of radioactive aerogel at the same time.

The present invention relates to polyester films that can be used in the packaging field, and more specifically to a high-surface-tension online coating film and its preparation process. The high-surface-tension online coating film is prepared from raw materials including a polyester component, a crosslinking agent, a wetting agent, a leveling agent, and water; the polyester component is prepared from raw materials including sodium sulfonate, a diol, a dibasic acid, a chain extender, and a catalyst; the chain extender is castor oil or hydroxymethyl cellulose; and the chain extender is used to introduce a polyhydroxy raw material into the online coating film, thereby increasing the crosslinking degree of the online coating film and the proportion of more stable polyethers in the polar groups of the online coating film, thereby imparting high surface tension and excellent water resistance to the online coating film.

This invention relates to the field of biochemistry and molecular biology experimental technology, specifically to an SDS-PAGE gel containing hydroxymethyl cellulose, its preparation method, and its applications. The SDS-PAGE gel is polymerized from acrylamide monomer, N,N'-methylenebisacrylamide, sodium dodecyl sulfate, buffer reagent, initiator system, and reinforcing agent. This gel significantly improves mechanical strength, toughness, and tear resistance while maintaining excellent electrophoretic resolution and transparency, effectively solving the problems of traditional gels being fragile, difficult to handle, and easily damaged during transfer processes. The preparation method of this invention is simple and low-cost, and suitable for biochemical research fields such as protein electrophoresis analysis and Western blotting.

The application relates to the technical field of battery diaphragm, and discloses a high-tension slurry suitable for matrix point coating, a diaphragm and a preparation process. The high-tension slurry suitable for matrix point coating comprises the following components in parts by weight: 0.5-1 parts of a dispersing agent, 15-20 parts of PVDF powder, 45-55 parts of water, 15-18 parts of a thickening agent, 13-23 parts of a binder and 2.5-4 parts of a surfactant. The thickening agent comprises hydroxymethyl cellulose, polyvinyl alcohol and cashew phenol ether compound in a mass ratio of 5:10:1-5. Through the technical scheme, the problems of coating connection, excessively high air permeability and low coating coverage caused by the small slurry tension and large fluidity of the slurry in the matrix point coating in the related art are solved.

The invention relates to a preparation method of single-walled carbon nanotube aqueous slurry, which is characterized by comprising the following steps: (1) dry grinding and premixing: grinding single-walled carbon nanotubes and carboxymethyl cellulose sodium, and fully mixing the single-walled carbon nanotubes and the carboxymethyl cellulose sodium to obtain mixed powder; (2) stirring and dissolving: adding the mixed powder into water, and magnetically stirring to obtain a mixed aqueous solution; and (3) ultrasonic dispersion: carrying out ultrasonic treatment on the mixed aqueous solution. Through dry grinding and premixing, the CMC enters gaps between SWCNT tube bundles, after water is added, the CMC absorbs water and swells to open an SWCNT agglomeration structure, and by combining ultrasonic dispersion, the requirement of a wet coating process on the slurry granularity can be met.

The application provides a solid fire-retardant buoyancy material with oil product flocculation and a preparation method and application thereof. The preparation method comprises the following steps: mixing hydroxymethyl cellulose, a binder, ammonium polyphosphate and water to obtain a suspension, mixing the suspension with hollow glass microbeads to obtain hollow glass microbeads coated with ammonium polyphosphate-hydroxymethyl cellulose, mixing the hollow glass microbeads coated with ammonium polyphosphate-hydroxymethyl cellulose with epoxy resin, a diluent, a curing agent and an accelerator and curing and forming to obtain hollow glass microbeads coated with epoxy resin-ammonium polyphosphate-hydroxymethyl cellulose, and reacting the hollow glass microbeads coated with epoxy resin-ammonium polyphosphate-hydroxymethyl cellulose with acrylamide monomers and an initiator to obtain the solid fire-retardant buoyancy material. The solid fire-retardant buoyancy material is prepared by the preparation method. The application also provides application of the solid fire-retardant buoyancy material in inhibiting oil product volatilization. The solid fire-retardant buoyancy material has the advantages of strong oil product volatilization inhibition capacity, superior fire-retardant performance, high mechanical strength, non-toxicity and environmental protection.

The invention discloses a plugging composition for plugging an oil field water flow dominant channel. The plugging composition contains ultrafine powder, a thickening regulator and a filtration regulator, wherein the ultrafine powder is prepared from 40.5 to 69.2 parts of hexagonal calcium silicate, 11.5 to 28.6 parts of calcite, 5.8 to 14.7 parts of clay mineral, 5.2 to 14.6 parts of quartz, 0 to 0.9 part of potassium feldspar, 0 to 2.6 parts of plagioclase, 0 to 0.6 part of dolomite, 0 to 2.1 parts of hornblende, 0 to 0.4 part of gypsum and 0 to 3.8 parts of anhydrite; the thickening regulator is sodium lignin sulfonate, hydroxymethyl cellulose and / or boric acid; the filtration property regulator is a terpolymer of 2-acrylamido-2-methylpropanesulfonic acid / acrylamide / hydroxy carboxylic acid, barium sulfate and / or 1788 type polyvinyl alcohol; the mass ratio of the thickening regulator to the ultrafine powder is (0.05-4): 100; the mass ratio of the filtration modifier to the ultrafine powder is (0.5-5): 100. The invention also discloses a preparation method and application thereof. The plugging composition provided by the invention can be matched with water flow dominant channels of reservoirs with different permeability.