90 results about "Palygorskite" patented technology

The invention discloses a soil organic modifier for ecological reconstruction of hardened soil and a preparation method thereof, the soil organic modifier is composed of a biological dry fermentation fertilizer and earthy palygorskite according to a volume ratio of 10-30: 1, and the water content is 25-40%; the biological dry fermentation fertilizer is prepared from livestock manure and a biomass material through anaerobic fermentation, and the biomass material is obtained by modifying sodium aluminosilicate, biochar and ceramsite through an organic matter-hot dipping method. The soil organic modifier prepared by the invention is used for hardened soil, improves soil pores, increases soil organic matters and nutrients, improves the sustainable reproduction environment of soil organisms, realizes optimization of soil physical and chemical properties, improves crop resistance, increases the yield and quality of crops, and reverses the problems of soil hardening and degradation and the like.

The invention belongs to the technical field of biochar immobilized microorganisms, and particularly relates to a preparation method of a biochar-based composite material for efficient immobilization of adaptive microorganisms. The microbial loading capacity is remarkably improved, the chain structure of the attapulgite layer provides a large number of linear adsorption sites, the porous structure of the biochar forms a three-dimensional adsorption space, and the chain structure and the porous structure of the biochar construct a synergistic adsorption mode; when the ammonium ferric citrate is modified, a decomposition product of the ammonium ferric citrate can form new mesopores / micropores in the carrier to enlarge the specific surface area, and the Fe element can be coordinated with an Si-O bond of the attapulgite and a carbon skeleton of the charcoal, so that pore collapse is inhibited, and the cycle stability is improved. And hydroxyl groups on the surface of the attapulgite and oxygen-containing functional groups of the charcoal cooperate with each other, so that electrostatic attraction and hydrogen bond binding force to the microorganisms are enhanced. The microorganism survival microenvironment is optimized, the composite carrier has the ion exchange capacity of the attapulgite and the water and fertilizer retention characteristic of the biochar, and a stable buffer environment and nutrition reserve can be provided for microorganisms.

The invention belongs to the technical field of battery cooling liquid, and particularly relates to new energy automobile power battery cooling liquid and a preparation method thereof. The new energy automobile power battery cooling liquid is prepared from the following raw materials in percentage by mass: 40 to 60 percent of dihydric alcohol, 0.2 to 3 percent of a corrosion inhibitor, 0.1 to 0.5 percent of an antioxidant, 0.1 to 0.5 percent of a pH regulator, 0.01 to 0.05 percent of an anti-foaming agent, 0.005 to 0.015 percent of a nano additive and the balance of ionized water, the nano additive comprises an ionic flaky nano mineral, nano palygorskite and nano diamond in a mass ratio of (3-5): (0.1-0.5): (0.1-0.5). The new energy automobile power battery cooling liquid has good low dielectric constant, high thermal conductivity and good storage stability.

The invention discloses a thickening suspending agent containing modified attapulgite and application of the thickening suspending agent, and belongs to the technical field of thickening suspending agents. After acidification treatment, the content of impurities on the surface of attapulgite is reduced, the surface area and the porous property are increased, the load rate of zero-valent iron can be increased, and the utilization rate of the zero-valent iron is increased. Zero-valent iron is uniformly loaded on tubular pore channels or the surface of attapulgite in the form of nano-particles, so that the surface roughness of the composite powder is increased, stronger steric hindrance can be formed around pesticide particles, and the pesticide particles are prevented from being gathered and enlarged due to collision, so that sedimentation is reduced, and the composite powder has good suspension property and dispersity; the load of zero-valent iron can endow the thickening suspending agent with the heavy metal chelating capability; through two times of intercalation treatment, the modified zero-valent iron composite attapulgite powder can be uniformly loaded between graphene oxide layers, the graphene oxide can assist the dispersion of the attapulgite to avoid agglomeration, and the existence of the graphene oxide can improve the thermal stability of the thickening suspending agent.

The invention relates to the technical field of casting, in particular to a water-soluble salt core for aluminum castings and an injection molding preparation process thereof.The water-soluble salt core is composed of a heterogeneous layered composite material system, and the heterogeneous layered composite material system comprises an eutectic mixture formed by superfine monopotassium phosphate and sodium citrate and used as a base material, the nano palygorskite fiber is used as a reinforcing phase; the functional layer formed by the polyvinyl alcohol film is wrapped on the outer layer; and sodium bicarbonate; according to the water-soluble salt core for the aluminum casting and the preparation technology of the water-soluble salt core, through the improved raw material formula and the innovative preparation technology, the defects in the prior art are effectively overcome. In the aspect of a raw material formula, an eutectic mixture formed by superfine monopotassium phosphate and sodium citrate which are mixed in a specific proportion is used as a base material, and the eutectic mixture has good chemical stability and thermal stability and can provide basic strength and forming performance for the water-soluble salt core.

The invention belongs to the technical field of water guide materials, and particularly discloses a preparation method of a palygorskite-polyacrylamide water seepage rate self-adjusting water guide material. The preparation method is used for solving the problems that a montmorillonite-polyacrylamide water guide material is poor in water blocking effect when the water content of soil is relatively high and is weak in water seepage rate response when the soil humidity fluctuates. Comprising the following steps: firstly, mixing palygorskite clay powder and distilled water to prepare a palygorskite aqueous solution, and mixing nonionic polyacrylamide particles and distilled water to prepare a polyacrylamide aqueous solution; then, the palygorskite aqueous solution and the polyacrylamide aqueous solution are stirred at the constant temperature for 30 min and then mixed, the mixed solution continues to be stirred at the constant temperature for 40 min, and palygorskite-polyacrylamide water guiding material slurry is obtained; and finally, drying the palygorskite-polyacrylamide water guide material slurry, so as to obtain the palygorskite-polyacrylamide water guide material. The water blocking effect of the water guiding material is improved when the soil humidity is high.

The invention discloses a method for preparing ceramsite from hazardous waste zinc-nickel-containing sludge and kyanite flotation tailings and a product thereof, and the method comprises the following steps: uniformly mixing fine-grain zinc-nickel-containing sludge, kyanite flotation tailings and palygorskite mineral powder, grinding at a high speed, mixing and stirring with water, and performing low-temperature plasma irradiation treatment to obtain the ceramsite. After the reaction is finished, granulating and drying to obtain raw material balls; sintering under an air atmosphere condition, and cooling to obtain the ceramsite. According to the method, a method of combining high-speed grinding, low-temperature plasma irradiation and sintering is adopted, collaborative recycling and harmless treatment of hazardous waste zinc-nickel-containing sludge and common solid waste kyanite flotation tailings are achieved, and the obtained ceramsite has no dangerous characteristic and has high strength. The method not only eliminates environmental risks of hazardous waste heavy metal sludge and common solid waste kyanite flotation tailings, but also converts the hazardous waste heavy metal sludge and the common solid waste kyanite flotation tailings into available building materials, and has environmental and economic dual benefits.

The present invention relates to the field of cable technology and proposes a long-life cable for nuclear power use. The cable comprises, from the inside out, a conductor, an insulation layer, a shielding layer, and a sheath layer. The sheath layer comprises the following components by weight: 60-70 parts high-density polyethylene, 12-22 parts carboxylated nitrile rubber, 4-8 parts styrene-acrylonitrile copolymer, 0.5-8 parts copper-based metal organic complex, 8-15 parts palygorskite powder, 2-5 parts zinc oxide, 0.5-1.3 parts antioxidant, 1-3 parts plasticizer, and 0.2-0.5 parts vulcanizing agent. The copper-based metal organic complex comprises copper trifluoromethanesulfonate and copper acetylacetonate in a weight ratio of 1-3:1. This technical solution solves the problem of poor aging resistance of sheath layers in nuclear power cables in the related art.

The application belongs to the technical field of soil improver, and particularly relates to a silicon-calcium-potassium-magnesium type soil improver and a preparation method thereof. The preparation method comprises the following steps: S1, adding quicklime into a sodium silicate solution to perform a reaction, separating, and drying to obtain calcium silicate with a water content of 0-80%; S2, uniformly mixing the calcium silicate, a magnesium salt / molecular sieve / modified cellulose, and a potassium salt / modified chitosan to obtain a mixture; and S3, spraying an alcohol solution containing alkyl quaternary ammonium salt modified palygorskite on the mixture, stirring, and drying to obtain the silicon-calcium-potassium-magnesium type soil improver. The silicon-calcium-potassium-magnesium type soil improver can meet the index requirements of the national standard GB / T 36207-2018 'Silicon-calcium-potassium-magnesium type fertilizer', and has good slow-release effect, storage stability, can improve the pH of acidic soil, and can increase the organic matter content of soil.

The invention relates to the technical field of road engineering construction, and particularly discloses a ceramic tile adhesive as well as a preparation method and application thereof. The ceramic tile binder comprises sulphoaluminate cement, gypsum, aggregate, rubber powder, a polymer emulsion, an inorganic additive, a waterproof agent, a water reducing agent, a defoaming agent and an air entraining agent, wherein the inorganic additive comprises palygorskite powder, microcrystalline glass powder, calcium formate and calcium nitrite; the polymer emulsion comprises a water-based acrylate emulsion and an ethylene-vinyl acetate copolymer emulsion. The ceramic tile binder has good water resistance, excellent bonding performance and low temperature resistance, the problems that an existing ceramic tile binder is poor in water resistance, low in bonding strength and poor in low temperature resistance are effectively solved, and a new design thought is provided for design of the ceramic tile binder.

The application provides a palygorskite-based magnesium silicate anthraquinone regenerative catalyst and a preparation method thereof, the chemical formula of the anthraquinone regenerative catalyst is Mg4Si6O15(OH)2·6H2O, and the preparation method comprises the following steps: (1) obtaining a palygorskite-based SiO2 precursor through hydrothermal acidification of palygorskite; (2) uniformly mixing the palygorskite-based SiO2 precursor, an ammonium salt, a magnesium salt and ammonia water through ultrasonic mixing; and (3) transferring the mixed solution to a hydrothermal kettle to generate palygorskite-based magnesium silicate through hydrothermal reaction. The application takes palygorskite as a silicon source and a template, has the advantages of wide raw material source, simple preparation process, low production cost, green environmental protection and convenience for industrialized production, etc. The palygorskite-based magnesium silicate prepared by the application can be used as a solid alkali catalyst, and has the advantages of non-toxicity, environmental protection, high catalytic activity, long service life and the like.

This invention belongs to the field of building materials technology. Specifically, it discloses a glaze for preventing ceramic tile deformation and an anti-deformation ceramic tile, comprising the following raw materials in parts by weight: 15-30 parts spodumene, 15-30 parts calcite, 12-20 parts bauxite, 8-15 parts pyrophyllite, 6-12 parts modified magnesium borate whiskers, 5-9 parts wet-process mica powder, 3-6 parts palygorskite, 1-2.5 parts calcium borate, 1-2 parts tricalcium silicate, and 0.2-0.7 parts ammonium fluoride. The system of this invention uses spodumene, calcite, bauxite, and pyrophyllite as the matrix minerals, effectively lowering the sintering temperature and providing basic strength to the system. At a lower firing temperature, a high degree of sintering of the glaze layer can be ensured, preventing sintering failure of other materials. By adding modified magnesium borate whiskers and wet-process mica powder, the flexural strength is effectively improved.

The application discloses a method for preparing ceramsite by using hazardous waste zinc-nickel-containing sludge and kyanite flotation tailings and a product thereof, and the method comprises the following steps: uniformly mixing fine-grained zinc-nickel-containing sludge, kyanite flotation tailings and palygorskite ore powder, mixing and stirring the mixture with water after high-speed grinding, and performing low-temperature plasma irradiation treatment; after the reaction is completed, the mixture is granulated and dried to obtain green balls; sintering is performed under an air atmosphere, and the ceramsite is obtained after cooling. The method combining high-speed grinding, low-temperature plasma irradiation and sintering is adopted, the hazardous waste zinc-nickel-containing sludge and the general solid waste kyanite flotation tailings are simultaneously recycled and harmlessly disposed, the obtained ceramsite has no hazardous characteristics and has high strength. The application not only eliminates the environmental risks of the hazardous waste heavy metal sludge and the general solid waste kyanite flotation tailings, but also converts the hazardous waste heavy metal sludge and the general solid waste kyanite flotation tailings into usable building materials, and has double benefits of environment and economy.

The invention discloses an efficient activation device and method for palygorskite, and belongs to the technical field of palygorskite activation. The device comprises a rack, an outer barrel is fixedly mounted on the rack, an inner barrel is arranged in the outer barrel, and a driving frame is rotationally mounted on the rack; the driving frame comprises two driving wheels located on the left side and the right side of the outer barrel respectively, one end of the rubber sleeve is connected with one end of the inner barrel, and the other end of the rubber sleeve is connected to an opening of the driving wheel. The eccentric ring is arranged on the driving wheel in a sliding manner; a partition assembly is arranged in the inner barrel in a sliding mode and divides an inner cavity of the inner barrel into a coarse grinding cavity on the left side and a fine grinding cavity on the right side. The efficient activation device and method for the palygorskite have the beneficial effects that through the arrangement of the driving frame and the inner barrel, raw materials not only roll in the inner barrel, but also move left and right along the inner barrel, so that the materials and grinding balls can move more sufficiently, and the problem that the materials or the grinding balls are concentrated is effectively avoided.

The application discloses a targeted magnetic nano-composite of palygorskite, a preparation method and application thereof in preparation of an in-vitro drug controlled release medicine. In the application, an anti-tumor drug DOX is loaded through an acid-cleavable acylhydrazone bond, and the drug release rate is lower in a normal physiological environment and higher in a tumor acid environment compared with electrostatic adsorption and pore storage of the DOX with HPal, so that the drug controlled release performance is obviously improved. In addition, loading of magnetic Fe3O4 nanoparticles and grafting of FA enrich the means of transporting the DOX to a designated area by the carrier, that is, the tumor cells can be positioned by external magnetic field control or receptor-ligand interaction targeting. MTT analysis and cell uptake research prove the targeting effect of the FA, and the therapeutic effect of the DOX can be effectively improved.

The application is a divisional application of 2022109403727. The application discloses a palygorskite-based mineralized water agent, which has a core-shell structure, and the content of the core is 75-90 wt%, wherein the core is a particle composed of the following components: palygorskite, lithia tourmaline, medical stone, serpentine, wood fish stone, hexacyclic stone and montmorillonite; the shell is composed of the following components: hydroxyapatite, tyrosine and methionine. Compared with the prior art, the mineralized water agent can not only increase beneficial substances such as strontium, selenium, zinc and lithium in drinking water, but also reduce fluorine, iron and manganese.

The invention discloses mining and metallurgy solid waste-based shrinkage-compensating freeze-thaw-resistant concrete and a preparation method thereof, and belongs to the technical field of building materials. The freeze-thaw resistant concrete is prepared from the following components in parts by weight: 300 to 400 parts of cement, 150 to 200 parts of mineral admixture, 10 to 20 parts of expanding agent, 10 to 15 parts of granular foam stabilizer, 600 to 700 parts of fine aggregate, 1000 to 1300 parts of coarse aggregate and 4.5 to 12 parts of air-entraining type water reducing agent, the granular foam stabilizer is prepared from nano SiO2, palygorskite whiskers and cellulose ether. The concrete disclosed by the invention has better mechanical property and freezing resistance while ensuring good volume stability, meets the durability requirement on the concrete in the salt freezing environment in the northeast region, and can be used in long-life projects in the service environment.

According to the production method and equipment for manufacturing the unfired ceramsite by utilizing the attapulgite, the cement provides basic strength support, the acidified attapulgite clay interacts with the cement and other materials, the internal structural stability of the ceramsite is enhanced, meanwhile, the overall strength of the ceramsite is further improved by adding the reinforcing agent, and the ceramsite has the advantages that the strength of the ceramsite is improved, and the service life of the ceramsite is prolonged. The requirements on the material strength in the fields of sewage treatment, constructed wetlands and the like can be met; the used disc granulator adopts a double-disc structure of an inner disc and an outer disc, the inner disc is used for granulation, the outer disc is used for shape adjustment, and the inner disc and the outer disc act together, so that the final ceramsite is very round in shape, the quality of finished products is greatly improved, continuous and uninterrupted granulation operation can be performed due to the stacked design of the inner disc and the outer disc, and the working efficiency is very high.

The application discloses a modified attapulgite, a riverbank ecological base material and a preparation method thereof. The preparation method of the modified attapulgite comprises the following steps: taking biochar and potassium hydroxide, stirring after adding water, and then performing suction filtration; the product is dried, ground and sieved to obtain a powder; the powder is mixed with attapulgite powder, pyrolysis reaction is carried out in a protective gas atmosphere, the product is washed until the pH is 6.5-7.0 after the reaction is completed, and attapulgite-based biochar is obtained; iron chloride solution and thiourea solution are added into the attapulgite-based biochar, then stirring, drying and calcining are carried out in a protective gas atmosphere, then the product is mixed with water, the pH of the system is adjusted to 6.5-7.5 and is left to stand, and finally washing and drying are carried out. The modified attapulgite prepared in the application has a unique layer chain structure and rod-shaped crystal, can adsorb, complex and ion exchange pollutants in the environment, and has strong adsorption and soil nitrogen and phosphorus holding capacity.

The application belongs to the technical field of catalysts, and particularly relates to a cyclohexanol dehydrogenation cyclohexanone catalyst and a preparation method thereof. The application first uses hydrochloric acid to perform acid modification treatment on a palygorskite, then performs a hydrothermal synthesis reaction with copper chloride to obtain a palygorskite carrier material containing copper oxide quantum dots, and then performs liquid phase co-precipitation treatment on the carrier material to obtain a three-dimensional layered double hydroxide, so as to obtain the cyclohexanol dehydrogenation cyclohexanone catalyst, which not only improves the specific surface area of the catalyst, but also obtains a good cyclohexanol conversion rate and cyclohexanone selectivity.

The invention provides a saline-alkali soil conditioner and a preparation method thereof. The preparation method comprises the following steps: S1, preparing polystyrene microspheres coated with polyethyleneimine; s2, preparing attapulgite of which the surface is grafted with TEMPO oxidized cellulose, and then carbonizing the attapulgite to obtain a carbon-coated attapulgite composite material; s3, preparing composite aerogel; s4, bacillus pasteurii and azotobacter chroococcum are loaded on the composite aerogel, and the saline-alkali soil conditioner is obtained. The double strains are loaded on the composite aerogel, controlled release and slow release of the strains are achieved, in addition, the two microbial agents serve as dominant flora, breeding of harmful pathogens in soil can be inhibited, soil micro-ecological balance can be adjusted, and a healthy rhizosphere environment is created for follow-up crop planting.

The invention relates to a thermoplastic resin composite material and a preparation method thereof.The thermoplastic resin composite material is prepared through the following steps that copper oxychloride, sodium hydroxide, absolute ethyl alcohol and deionized water are added into a reaction vessel for a reaction, a solution A is obtained, filtered, washed and dried, mesoporous copper oxide is obtained, palygorskite is placed in a crucible to be ground into powder, the powder is sieved through a 500-mesh sieve, and the mesoporous copper oxide is obtained; adding tartaric acid, salicylaldehyde, mesoporous copper oxide, the palygorskite powder, absolute ethyl alcohol and deionized water into a reaction vessel for reaction to obtain a solution B, filtering, washing and drying to obtain a functional filler; the thermoplastic resin, the functional filler and the antioxidant are mixed and stirred uniformly to obtain a mixture, and the mixture is extruded and granulated from an extruder to obtain the composite material. The thermoplastic resin composite material has good antibacterial performance and VOC performance.

The invention relates to the technical field of attapulgite, and provides a preparation method of acid-ultrasonic synergistically activated attapulgite and application of the acid-ultrasonic synergistically activated attapulgite in dye wastewater treatment, the preparation method of the acid-ultrasonic synergistically activated attapulgite comprises the following steps: S1, pretreatment: purifying attapulgite less than or equal to 2mm, and drying at 105 DEG C after purification; s2, a sulfuric acid solution with the concentration of 1-2 mol / L is prepared and mixed according to the solid-to-liquid ratio of 1: 8-1: 10, and ultrasonic treatment is carried out for 120-160 min under the conditions of 40-60 kHz and 120-150 W / L at the temperature of 40-60 DEG C; s3, filtering and washing until the pH value is 3-5; and S4, drying at 110 DEG C, and calcining at 200-400 DEG C for 1-2 hours.

The invention discloses a lightweight autoclaved aerated concrete block, and relates to the technical field of concrete blocks, the lightweight autoclaved aerated concrete block comprises the following raw materials: cement, lime, a base material, modified palygorskite, calcium sulfate dihydrate, aluminum powder paste, a foam stabilizer and deionized water; the modified palygorskite is added, and a fibrous structure of the modified palygorskite can form a network skeleton in slurry, fill internal pores and block capillary channels, so that the overall structural compactness and the surface strength of the building block are improved, and the drying shrinkage rate and the water absorption rate can be reduced; by adding the foam stabilizer, sodium alkyl benzene sulfonate in the foam stabilizer can reduce the surface tension of the slurry and promote the generation of a large amount of bubbles; the nano silicon dioxide can form a rigid supporting framework in a bubble liquid film, so that bubbles are prevented from being combined or broken; the polyvinyl alcohol forms an elastic protective film on the surface of the bubble, so that the service life of the foam is prolonged, the closed porosity of the building block is greatly improved, the lightweight characteristic of the building block is guaranteed, the drying shrinkage rate is reduced due to the pore uniformity, and the impermeability and the overall strength are improved.

The invention relates to the technical field of preparation of master composite materials, in particular to a bionic epoxy adhesive for a mica composite material and a preparation method of the bionic epoxy adhesive. The bionic epoxy adhesive for the mica composite material is prepared from the following raw materials in parts by weight: 100 parts of bisphenol A epoxy resin, 50-75 parts of a curing agent, 10-20 parts of an epoxy active diluent, 3-6 parts of an accelerant and 8-20 parts of hard-core soft-shell particles, the hard-core soft-shell particle takes palygorskite nanoparticles as a hard core and PU as a soft shell, and dopamine or tannic acid is grafted outside the soft shell of the hard-core soft-shell particle. The hard-core soft-shell particles are used for toughening and reinforcing epoxy resin curing, so that the epoxy resin is endowed with good impact toughness and good mechanical strength and Young modulus, and the use requirements of epoxy mica piece products are better met.

The application discloses a palygorskite / calcium silicate composite material. The palygorskite / calcium silicate composite material is composed of calcium silicate and modified palygorskite, wherein the modified palygorskite is palygorskite modified by succinic acid and catechin, and the modified palygorskite is loaded on the surface of the calcium silicate. Compared with the prior art, the application combines the modified palygorskite and the calcium silicate to form a synergistic effect, so that the acid soil can be repaired efficiently, economically and sustainably.

The application discloses a palygorskite adsorption material and a preparation method and application thereof, and belongs to the technical field of heavy metal contaminated wastewater treatment. The palygorskite adsorption material is obtained by crushing and ball milling of palygorskite raw ore. The method improves the physicochemical properties of the palygorskite by controlling the ball milling conditions, so that the adsorption capacity of the palygorskite for heavy metal ions is improved. The removal rates of the obtained palygorskite adsorption material for Pd 2+ and Cd 2+ in an aqueous solution are nearly 6 times and 4.5 times higher than those of the palygorskite raw ore respectively.

The application discloses a palygorskite clay material coated with a phenanthroline functionalized polymer and application thereof, and first, a solution polymerization of glycidyl (meth)acrylate is initiated by a persulfate and a fatty tertiary amine redox initiation system, a polymer with an epoxy group in a side chain is grafted on a surface of a palygorskite nanorod crystal modified by a tertiary amine, then a 1,10-phenanthroline fluorescent chromophore is introduced into the grafted polymer side chain through an epoxy ring-opening reaction, and a palygorskite clay material coated with a phenanthroline functionalized polymer is prepared; the polymer-coated palygorskite nanocomposite provided by the application can be used for concentration detection and adsorption removal of copper ions in water.

The invention relates to a film containing modified graphene and a preparation method thereof, and belongs to the technical field of polymer composites.The preparation method comprises the steps that composite graphene powder, azobenzene compounds containing silane and silane containing double bonds are subjected to reaction grafting; the modified graphene and low-density polyethylene particles are subjected to melt blending and film casting to obtain a film containing the modified graphene, so that an azobenzene compound containing silica is uniformly dispersed in the film, and azobenzene molecules can be converted into bent cis-isomers under ultraviolet irradiation; isomerization can lead to reduction of the molecular level arrangement sequence of azobenzene and change of intermolecular spacing, so that the thin film is bent towards light, and under the irradiation of visible light, azobenzene is isomerized from cis to trans, and the thin film material is recovered to the original shape; a one-dimensional rod-like structure of the attapulgite and a two-dimensional lamellar structure of the graphene oxide form a rod-sheet synergistic enhancement structure, so that agglomeration is prevented, and the dispersity of the graphene oxide in a film matrix is improved.

The invention belongs to the field of inorganic-organic composite carrier materials, and provides an attapulgite-chitosan oligosaccharide composite carrier and a preparation method thereof. According to the invention, gamma-glycidyl ether oxypropyl trimethoxy silane is subjected to hydrolytic polycondensation to form a silane coupling layer on the surface of attapulgite, and chitosan oligosaccharide is covalently grafted through an epoxy group ring-opening reaction to construct a design of a double-layer covalent connection shell layer; according to the preparation method, accurate regulation and control of the shell thickness of 2-30nm under the condition that the mass ratio of chitosan oligosaccharide is 0.05-0.40 are realized, the particle size D50 is controllable in a range of 0.20-2.00 m, the apparent viscosity of 20wt% slurry is 50-500mPa. S, the PDI of powder after spray drying is reduced to 0.05-0.35, the water content is controlled to be 0-8wt%, and the particle size D50 is controllable in a range of 0.20-2.00 m. The coupling contradiction that an existing attapulgite carrier is difficult to consider high-proportion stable introduction of chitosan oligosaccharide, low-viscosity spray processing, particle size PDI degradation, moisture absorption and caking and the like is solved, and the attapulgite carrier has wide application value in the fields of pesticides, food additives, bioactive substance controlled-release carriers and the like.