387 results about "Hydrotalcite" patented technology

The invention provides an acetylacetone-based composite thermal stabilizer which is a mixture obtained by mixing zinc acetylacetonate, calcium acetylacetonate or magnesium acetylacetonate and hydrotalcite pro rata. The composite thermal stabilizer is suitable for chloride-containing high polymer, such as polyvinyl chloride, chlorinated polyethylene, chlorinated polyvinyl chloride, copolymer of vinyl chloride-ethylene or copolymer of vinyl chloride-vinyl acetate, has better thermal stability, prolongs the thermal aging time of the chloride-containing high polymer, and overcomes the shortcomings of poor long-term performance of single stabilizer of zinc acetylacetonate, poor transparency of stabilizer of calcium acetylacetonate, and poor initial colorability of stabilizer of hydrotalcite. The composite thermal stabilizer has low cost, good initial colorability, excellent long-term performance and good transparency, and is an efficient composite thermal stabilizer.

The invention discloses carbon-based material loaded hydrotalcite synergistically modified composite rubber asphalt which comprises the following components in percentage by mass: asphalt, rubber powder, a dispersing agent, a retarder, carbon-based material loaded hydrotalcite, an antioxidant and a heat stabilizer. The carbon-based material loaded hydrotalcite, the antioxidant and the heat stabilizer are compounded, so that the ultraviolet aging resistance, the oxidation aging resistance and the mechanical strength of the composite rubber asphalt can be remarkably improved, the limitation of a single modified material is effectively overcome, and the service life of an asphalt road is greatly prolonged.

The invention relates to the technical field of thermal transfer printing ink, in particular to anti-migration high-stability thermal transfer printing ink as well as a preparation process and application thereof. The anti-migration high-stability heat transfer printing ink is obtained by uniformly mixing the water-based acrylic resin, the pigment, the defoaming agent, the flatting agent, the thickening agent and the epoxy modified organic silicon resin, then adding the modified hydrotalcite and the kaolin, and uniformly mixing. The anti-migration high-stability heat transfer printing ink is prepared from the following components in parts by weight: 80 to 100 parts of waterborne acrylic resin, 10 to 20 parts of epoxy modified organic silicon resin, 20 to 30 parts of pigment, 10 to 20 parts of modified hydrotalcite, 5 to 8 parts of kaolin, 1 to 3 parts of flatting agent, 2 to 4 parts of defoaming agent and 1 to 3 parts of thickening agent. The anti-migration high-stability thermal transfer printing ink prepared by the invention has relatively high adhesive force and relatively low mobility, and can be stably attached to the surface of a base material.

The invention provides a long-acting anticorrosive epoxy powder coating and a preparation method thereof. The coating comprises epoxy resin, polyester resin, thiadiazole corrosion inhibitor loaded cerium-doped hydrotalcite composite particles, silane modified mica iron oxide, zinc phosphate, barium sulfate and the like. The core innovation lies in that 2-amino-5-(4-hydroxyphenyl)-1, 3, 4-thiadiazole corrosion inhibitor molecules are designed and synthesized, the molecules are loaded between cerium-doped magnesium-aluminum hydrotalcite nano container layers through an anion exchange method, corrosion environment pH responsive gradient release is achieved, a coating constructs a passive shielding, active corrosion inhibition and interface anchoring triple protection mechanism in the coating, and the corrosion resistance of the coating is improved. The neutral salt spray test resistance exceeds 2000h, and the coating is suitable for long-acting corrosion protection of iron accessories and cable bridges.

The invention provides a soilless phase reservoir protection water-based drilling fluid as well as a preparation method and application thereof, and belongs to the technical field of drilling fluids. The drilling fluid is prepared from the following raw materials in parts by mass: 100 parts of water, 0.2-0.4 part of a first pH regulator, 1-3 parts of a deoxidant, 0.1-0.4 part of a tackifying and shear strength improving agent, 2-4 parts of a filtrate reducer, 4-6 parts of magnesium-aluminum hydrotalcite, 4-6 parts of micro-nano aluminum oxide, 4-6 parts of superfine calcium carbonate, 4-6 parts of a lubricant, 1-2 parts of a corrosion inhibitor and 70-660 parts of an inorganic salt weighting agent. The drilling fluid disclosed by the invention is excellent in high-temperature resistance, good in rheological property and excellent in filtrate loss reduction performance; the drilling fluid disclosed by the invention can be prepared into saturated CaCl2 and saturated CaBr2 systems, does not contain barite and clay, is high in mud cake acid solubility, has permeability recovery of more than 72% after plugging, is good in reservoir protection, and has potential of on-site large-scale application.

The utility model discloses a mixing device for producing magnesium-aluminum hydrotalcite, which comprises a mixing tank body, a main pipe is rotatably mounted in the middle of the mixing tank body, and a stirring device is mounted on the main pipe; a second feeding pipe is horizontally and fixedly mounted at the bottom of the main pipe, an inner runner of the second feeding pipe is communicated with an inner runner of the main pipe, and a plurality of second spray heads are arranged at the lower end of the second feeding pipe; a material mixing channel is vertically arranged on one side of the mixing tank body, and the bottom of the material mixing channel is communicated with the bottom of the mixing tank body, so that mixed liquid in the material mixing channel flows into the bottom in the mixing tank body; a conveying auger is arranged at the top of the mixing channel, and a first feeding pipe and a feeding hopper are sequentially arranged above the feeding end of the conveying auger in the conveying direction. According to the magnesium-aluminum hydrotalcite mixing device, mixing is carried out twice, stirring is more thorough, the mixing effect is good, and the purity of magnesium-aluminum hydrotalcite can be guaranteed.

The invention provides a preparation method of a hydrotalcite-derived cobalt-copper catalyst and application of the hydrotalcite-derived cobalt-copper catalyst in furfural hydrogenation reaction. A series of different layered composite metal oxide precursors are prepared through coprecipitation and ion exchange methods, the layered composite metal oxide precursors are applied to furfural hydrogenation reaction after being pre-reduced, and the reaction with pentanediol and furfuryl alcohol as target products shows excellent catalytic activity. By designing the element composition and structural distribution of the hydrotalcite precursor, the composition, the structure and the physical property of the catalyst are effectively modulated, and the distribution of hydrogenation products is effectively regulated and controlled. The furfural can be completely converted on the Co < 1.5 > Cu < 0.25 > Al < 0.5 > Ox catalyst, and the yield of the product pentanediol reaches 68.8%; the yield of the product furfuryl alcohol reaches 98% on the basis of the Co < 1.5 > Cu < 0.25 > Al < 1.75 > catalyst. Characterization results of the catalyst show that the hydrogenation performance of the catalyst strongly depends on sample element composition, valence states of active species Cu and Co, structural distribution and dispersity of the active species Cu and Co in a precursor and a synergistic effect among different species.

The invention discloses a bottom mud ecological restoration material as well as a preparation method and application thereof. The material is composed of a degradable carrier, a treatment flora and a multifunctional filler. The carrier is porous particles die-cast by corn straws and the like; the treatment flora comprises photosynthetic bacteria, bacillus and nitrifying bacteria; the filler is prepared from non-nitrate type hydrotalcite-like compounds, calcium nitrate, nitrate type hydrotalcite-like compounds and a flocculating agent according to a specific mass ratio. The preparation method comprises the following steps: carrying out pressure casting on the carrier, adsorbing the flora, and rolling the filler to form balls. The restoration method comprises the steps that a river channel is cut off in the dry season to form a closed area, materials are put according to the area ratio of 10: 1 for preliminary restoration, and after standing is conducted for 1-5 days, the materials are put along with water flow according to the area ratio of 2: 1 for deep restoration. Through the physical, chemical and biological synergistic effect, the sediment redox environment can be effectively improved, pollutant release and degradation are promoted, operation is easy and convenient, and the risk of secondary pollution is low.

A toner including: a toner particle containing a binder resin; and an inorganic fine particle, wherein the inorganic fine particle contains a strontium titanate fine particle A, a silica fine particle B, and a hydrotalcite particle C, Si is present at a surface of the strontium titanate fine particle A, and a value Si / Sr of a mass ratio of Si to Sr, which is detected in a fluorescent X-ray analysis of the strontium titanate fine particle A, satisfies the following formula (1); 0.20≤Si / Sr≤0.60 . . . (1).

The utility model discloses a device for preparing and synthesizing hydrotalcite from carbon dioxide, which comprises a mixing tank used for preparing hydrotalcite, a hydrate introducing assembly used for introducing hydrotalcite preparation solution is arranged on one side of the mixing tank, and a carbon dioxide introducing assembly used for introducing carbon dioxide is arranged in the center of the top of the mixing tank. A collecting tank for collecting a mixed solution is mounted on one side of the bottom of the mixing tank. A hydrotalcite solution is introduced into the mixing tank through the delivery pump, a low-pressure area is formed when the hydrotalcite solution passes through the contraction section, and when the hydrotalcite solution passes through the throat pipe, the flow rate reaches the maximum value, and the pressure reaches the minimum value, so that carbon dioxide gas in the carbon dioxide storage tank can be sucked through the gas inlet pipe; meanwhile, by arranging the anti-backflow assembly, the gas-liquid mixture can be effectively prevented from flowing back, so that the practicability of the gas-liquid mixing device disclosed by the utility model is improved.

The invention discloses a preparation method of C3H5NO-ZnCl2, a preparation method of Mg4Al2Zn2PO4 hydrotalcite, a preparation method of an intumescent flame-retardant epoxy acrylate coating and a coating thereof, phosphate radical series hydrotalcite is prepared by adopting a coprecipitation method, the phosphate radical series hydrotalcite is matched with ZnCl2 and EA, and the coating is formed by UV curing, so that the flame-retardant property of the epoxy acrylate coating (EA) is improved, and the flame-retardant property of the coating is improved. The result shows that ZnCl2 can be well inserted into the hydrotalcite layer; the flame retardant effect of the Mg4Al2Zn2PO4-C3H5NO-ZnCl2 (1: 1) / EA coating is optimal, and the carbon residue rate, the limit oxygen index and the vertical combustion level of the coating are optimal and are respectively 56.84%, 56 and V-0. Meanwhile, the flame-retardant coating has good transparency and mechanical properties, the light transmittance of the flame-retardant coating can reach 92% at most, and the hardness of the flame-retardant coating reaches 6H; the thermal decomposition temperature is high, the high-temperature calcined carbon layer structure is a regular hexagonal honeycomb-shaped stable structure, and the flame retardant property is high.

The invention provides a red foamed ceramic wall body material. The red foamed ceramic wall body material is prepared from the following raw material components in parts by weight: 50 to 78 parts of waste glass powder, 0 to 20 parts of fly ash, 10 to 20 parts of magnesium-iron hydrotalcite, 10 to 20 parts of limestone and 2 to 5 parts of borax. According to the invention, magnesium iron hydrotalcite is subjected to in-situ decomposition to generate pleonaste, the red color of ferric ions is retained, the red foamed ceramic is prepared, and black ferrous oxide or ferroferric oxide is prevented from being generated.

The present application relates to the field of dephosphorization adsorbent, disclose a kind of modified hydrotalcite adsorbent and its preparation method and application, the adsorbent includes hydrotalcite and / or hydrotalcite-like compound with lamellar structure, and modification component;The modification component includes the first metal component modified on the layer of the hydrotalcite and / or hydrotalcite-like compound, and the second metal component modified in the interlayer of the hydrotalcite and / or hydrotalcite-like compound;Wherein, the first metal component is selected from transition metal and / or rare earth metal;The second metal component is selected from at least one of alkali metal.By metal modification in the layer and interlayer of hydrotalcite and / or hydrotalcite-like compound, the selectivity of adsorbent for phosphate in water can be effectively improved, and the phosphorus capacity is high, and has excellent effect in the application of dephosphorization in complex water.

The application discloses a PO4 3‑ and a preparation method of a flame-retardant epoxy acrylate coating layer of 8-OQ intercalated zinc-aluminum hydrotalcite, and the coating layer. Phosphate ions are intercalated between layers by using the ion-exchangeability between layers, and other intercalation agents are used to increase the intercalation rate of phosphate ions before the phosphate ions are embedded into the layers. 8-hydroxyquinoline as an intercalation agent can effectively expand the interlayer spacing of hydrotalcite, and provide more space for anion exchange. The Zn / Al-PO4 3‑ -LDHs intercalated with 8-hydroxyquinoline has the optimal flame-retardant and mechanical properties of the coating layer of the EA compound system. The hydrotalcite can make the carbon layer more uniform, more dense and more solid, and increase the carbon content of the coating layer, so as to improve the flame retardancy and thermal stability of the composite coating, and provide a new method for the research on the hydrotalcite modified EA fireproof coating.

The application relates to the field of wastewater treatment catalysis, and discloses a Fe-Cu-Mn ternary hydrotalcite-like catalyst and a preparation method thereof, which comprises iron, copper and manganese; the iron, copper and manganese are distributed in the layer plate metal central site in an atomic dispersion mode; the layer plate oxygen octahedron is in a non-symmetrical stretching distortion state; a 3.2-4.8 degree deviation is generated in the manganese oxygen copper bond angle in the layer plate; the lattice parameter a of the layer plate 110 crystal face direction is 0.305-0.312 nm; the molar ratio of copper to manganese is 1:2-1:5; and the molar sum of copper and manganese to the molar ratio of iron is 2:1-4:1. According to the application, the lattice non-symmetrical distortion induces the space overlap of the auxiliary metal and the iron active center orbit, an electron transfer path is constructed, the shielding effect of the hydroxyl ion on the iron active site under the alkaline environment is eliminated, the catalytic site activity is maintained, and stable and efficient catalytic treatment under wide pH working conditions is realized.

This adsorbent for endotoxin in a culture medium contains at least one selected from the group consisting of anionic clay, a solid solution of anionic clay, and magnesium oxide, and can effectively adsorb ET in the culture medium. Representative examples of the anionic clay include hydrotalcite. The endotoxin adsorbent may further contain an adsorbent comprising a base material and a cationic group including a nitrogen atom. The adsorbent comprising a base material and a cationic group including a nitrogen atom is preferably a cellulose having an amino group.

This invention discloses a low-VOCs, low-odor environmentally friendly material for the production of sealing strips for passenger vehicles and its preparation method, belonging to the field of polymer materials technology. The technical solution includes the following raw materials in parts by weight: 100 parts PVC resin; 5 parts stabilizer; 40-60 parts plasticizer; 0.4-0.6 parts lubricant; 1.3-1.5 parts antioxidant; 0.3-0.4 parts ultraviolet absorber; 0.3-0.5 parts deodorizer A; 0.8-1.0 parts deodorizer B; 10-25 parts light active calcium carbonate; 1.0-1.2 parts pigment; deodorizer A is a complex of zinc amino acid, and deodorizer B is benzoic anhydride-intercalated modified aluminum-magnesium hydrotalcite. This invention can capture free, irritating small-molecule alcohols and convert them into esters with milder odors, effectively preventing alcohols from being converted into irritating ethers and ketones during processing, thus reducing the odor and VOCs of passenger vehicle sealing strips.

A toner comprising a toner particle comprising a binder resin, a fatty acid metal salt particle on a surface of the toner particle, and a hydrotalcite particle on a surface of the toner particle, wherein the hydrotalcite particle comprises fluorine, the fluorine is present inside the hydrotalcite particle in line analysis of STEM-EDS mapping analysis of the toner, and when an area ratio of the fatty acid metal salt particle to the toner particle in an EDS measurement field, which is measured through the STEM-EDS mapping analysis of the toner, is defined as S1(%) and an area ratio of the hydrotalcite particle to the toner particle in the EDS measurement field, which is measured through the STEM-EDS mapping analysis of the toner, is defined as H1(%),S1 / H1 is 0.25 to 9.00.

The invention provides a magnesium-aluminum hydrotalcite / magnesium hydroxide nano-composite flame retardant, a preparation method thereof and a flame-retardant polymer composite material, and belongs to the technical field of inorganic nano-composite flame-retardant materials. Flaky magnesium-aluminum hydrotalcite is used as a substrate, magnesium hydroxide nanoparticles with the particle size of 10-100 nm uniformly grow on the surface of the substrate through an in-situ precipitation method and are firmly combined, and a sheet-particle heterostructure is formed. According to the composite structure, the two flame-retardant components are tightly compounded and uniformly dispersed on the nanoscale through chemical bonding. During heating, hydrotalcite and magnesium hydroxide can generate staged and multi-layer synergistic flame retardant and smoke suppression effects. The composite flame retardant disclosed by the invention is applied to a polymer in an addition amount of 5-30wt%, so that a composite material can reach an excellent flame retardant grade with a relatively low addition amount, meanwhile, the heat release rate and the smoke release amount of the material are remarkably reduced, and the original mechanical properties of a matrix can be maintained to the greatest extent.

This invention provides a quadruple ion-coupled erosion-protected concrete and its preparation method, relating to the field of special concrete materials technology. The concrete comprises basic components and functional admixtures. The basic components include cementitious materials, aggregates, and water. The functional admixtures include a coupling ion locking agent, a dual-interface film-forming aid, and a salt-expansion-resistant crack-resistant agent. The coupling ion locking agent includes calcined calcium aluminum hydrotalcite and diethylenetriamine pentacarboxylate; the dual-interface film-forming aid includes isobutyltriethoxysilane and lithium silicate; and the salt-expansion-resistant crack-resistant agent includes calcium sulfoaluminate expansion agent and lightly calcined magnesium oxide. The three admixtures work synergistically from three dimensions: active ion solidification, in-situ interface shielding, and full-cycle volume compensation, achieving simultaneous solidification of the four erosion ions, continuous blocking of penetration channels, and effective offsetting of salt crystallization expansion stress. This ensures the long-term safe service of the concrete under extreme conditions of high water pressure, high humidity, alternating wet and dry conditions, and multi-ion coupling erosion.

The invention discloses a composite bone repair material as well as a preparation method and application thereof, and belongs to the technical field of biomedical materials. The composite bone repair material comprises an etched cobalt magnesium europium molybdenum hydrotalcite nanosheet, calcium peroxide nanoparticles and an akermanite scaffold, the calcium peroxide nano-particles are loaded on the etched cobalt magnesium europium molybdenum hydrotalcite nano-sheets and are marked as a-CoMgEuMo-LDH (at) CaO2, and the a-CoMgEuMo-LDH (at) CaO2 is attached to the surface of the akermanite bracket and is marked as a-CoMgEuMo-LDH (at) CaO2-AKT. The composite bone repair material disclosed by the invention shows strong active oxygen generation capability, anti-tumor efficacy and osteogenic activity, has excellent biological safety, integrates anti-tumor and bone repair, and has a wide prospect in related operations.

The invention relates to fluorocarbon chain modified cobalt nickel-aluminum hydrotalcite and a preparation method and application thereof, ions in the cobalt nickel-aluminum hydrotalcite are Co < 2 + >, Ni < 2 + > and Al < 3 + > respectively, and a fluorocarbon chain is prepared from at least one compound in formulas (I)-(III); comprising the following steps: S1, stirring and mixing a Co < 2 + > aqueous solution, a Ni < 2 + > aqueous solution, an Al < 3 + > aqueous solution and a urea aqueous solution in an inert gas atmosphere, then carrying out a hydrothermal reaction, and after the reaction is finished, carrying out post-treatment to obtain cobalt nickel-aluminum hydrotalcite; and S2, dispersing the cobalt nickel-aluminum hydrotalcite in anhydrous toluene, reacting the cobalt nickel-aluminum hydrotalcite with at least one compound in formulas (I)-(III) under the action of triethylamine in an inert gas atmosphere, and after the reaction is finished, performing post-treatment to obtain fluorocarbon chain modified cobalt nickel-aluminum hydrotalcite, the hydrotalcite is applied to preparation of naphthenic alcohol and naphthenic ketone by catalyzing partial oxidation of naphthenic hydrocarbon. The method has the advantages of high selectivity, high product yield, low content of naphthenic hydroperoxide in the reaction process, and high operation safety.

This invention discloses a modified sodium carboxymethyl cellulose (CMC) and its preparation method in the field of composite materials. The method involves first dissolving CMC in water to obtain a solution, and simultaneously ultrasonically treating a multi-scale heterogeneous nano-flower-like hydrotalcite-silicon hybrid material and a dispersant in water to obtain a slurry. The two materials are then mixed and stirred under gentle heating to obtain a blended composite liquid. Finally, the modified CMC product is obtained through casting, segmented heat treatment, and grinding. The hybrid material is prepared by synergistic modification of hydrotalcite with bifunctional silanes, further compounded with silica via a sol-gel method, and finally treated with an initiator in an aqueous phase. This hybrid material significantly improves the compatibility and interaction with the CMC matrix. The process conditions of this invention are mild, the operation is simple, and the resulting product exhibits excellent comprehensive performance, showing application potential in the field of composite materials.

The invention relates to the technical field of lubricating oil additives, and discloses an environment-friendly additive for replacing a phosphorus-chlorine antiwear agent.The preparation method comprises the following steps that base oil is added into a reaction kettle, stirring is conducted for 15-20 min at the temperature of 50-70 DEG C at the speed of 300-600 rpm, then molybdenum oleate, modified hydrotalcite, modified eugenol and octyl dimethylbenzene are sequentially added under continuous stirring, uniform mixing is conducted, and the additive is obtained. The environment-friendly additive for replacing the phosphorus-chlorine anti-wear agent is obtained. Under high temperature and high pressure generated by friction, molybdenum oleate can be decomposed to form a molybdenum disulfide solid lubricating film with low shear strength, so that the wear resistance of the additive is enhanced; stearic acid is used for modifying hydrotalcite, so that the anti-wear effect is synergistically enhanced; an organic silicon chain segment in the modified eugenol can provide auxiliary lubrication, and polar groups are adsorbed on the metal surface, so that the corrosion resistance of the additive is improved; and the additive does not contain phosphorus, chlorine and other harmful elements, and accords with the development direction of modern green manufacturing and environment-friendly lubrication.

The application belongs to the field of polyurethane materials, and discloses a two-component bio-based self-cleaning anticorrosive coating for power transmission lines and a preparation method thereof, which comprises A component and B component with a mass ratio of 1:1-2; the A component is composed of the following components in parts by mass: bio-based polyurethane prepolymer 70-75 parts, hydrotalcite 5-8 parts, stearic acid 6-8 parts, modified fumed silica 3-5 parts, dibutyl titanate 0.1-0.2 parts, substrate binder C 3-5 parts, and substrate binder D 4-6 parts. The B component is composed of the following components: bio-based polyaspartic acid ester 85-90 parts, color paste 3-5 parts, defoaming agent 2-3 parts, leveling agent 1-2 parts, anti-precipitation additive 1-2 parts, and silane 2-4 parts. The two-component bio-based self-cleaning anticorrosive coating for power transmission lines does not need primer and topcoat, can meet the requirements of corrosion resistance, weather resistance and self-cleaning effect, can achieve long-acting self-cleaning effect, can improve construction efficiency, and can simplify the construction process.

The invention relates to an embedded heat stabilizer for PVC (polyvinyl chloride) as well as a preparation method and application of the embedded heat stabilizer, which can be applied to the field of downstream processing and application of PVC. The preparation method comprises the following steps: firstly, synthesizing a Zn-Sm structure precursor with a hydrotalcite structure through a hydrothermal method, and then carrying out modification treatment through stearic acid to synthesize the Zn-Sm embedded type heat stabilizer. The thermal stabilizer has a relatively better structure and more active centers, so that the adsorption and conversion of HCl in the PVC thermal decomposition process are facilitated, the oxidation resistance is improved through the efficient synergistic effect of rare earth elements samarium and zinc which are introduced into a plurality of orbits and have larger radiuses, and the zinc burning phenomenon caused in the PVC thermal decomposition process is prevented.

A layered double hydroxide (LDH) in a heterogeneous electrocatalytic sp 2 Application of C–H activation and CO2 carboxylation. The preparation method of a cobalt-iron molybdate intercalated hydrotalcite (CoFe-Mo LDH) catalyst is as follows: the CoFe-Mo LDH is prepared by a simple coprecipitation method. The CoFe-Mo LDH is used for a heterogeneous electrocatalytic sp 2 C–H activation and CO2 carboxylation. By changing the CoFe-Mo LDH intercalation of the CoFe-Mo LDH solvent environment, a series of mono-carboxylation and di-carboxylation products can be obtained, such as: in the case of benzene as a substrate and DMF as a solvent, a mono-carboxylation product benzoic acid is obtained; in the case of benzene as a substrate and MeCN as a solvent, a di-carboxylation product isophthalic acid is obtained. For the first time, the on-demand switching of the mono-carboxylation and di-carboxylation of phenyl substrates is realized, and this research not only provides a new heterogeneous electrocatalytic strategy to achieve the carbon neutralization target, but also successfully converts cheap and easily available chemicals into high-value and carbon chain growth carboxylic acids under mild conditions.

The invention provides a bamboo powder filled and reinforced degradable composite material and a preparation method thereof.The preparation method comprises the following steps that bamboo wood is smashed and dried to obtain bamboo powder, choline chloride and urea are mixed and stirred under the heating condition to obtain a deep eutectic solvent, the bamboo powder is added into the deep eutectic solvent, stirring is conducted under the heating condition, and the bamboo powder filled and reinforced degradable composite material is obtained. Reacting under a continuous heating condition, filtering, washing and drying to obtain activated bamboo powder; the activated bamboo powder is mixed with maleic acid, a cross-linking agent and a catalyst, stirring and washing are conducted under the heating condition, and esterified bamboo powder is obtained; mixing magnesium-aluminum hydrotalcite, the first part of PLA, a coupling agent and a lubricant, and extruding to obtain dispersed particles; the dispersed particles, esterified bamboo powder, a second part of PLA and PBAT are mixed at a high speed, then extrusion and film blowing are carried out, and the composite material is obtained. According to the degradable composite material, the filling amount of the bamboo powder is increased to 40 wt% through DES pretreatment, and the raw material cost is reduced.

The invention discloses a method for preparing a humic acid anchored hydrotalcite coated Fe3O4 magnetic material based on salt lake bischofite and application, and belongs to the technical field of heavy metal adsorbents. The method comprises the following steps: preparing high-purity magnesium chloride hexahydrate by taking salt lake bischofite as a raw material, mixing with an aluminum source, hydrolyzing to generate a hydrotalcite precursor, and decomposing the nitrogen source to provide an alkaline environment to promote formation of a layered structure; humic acid is chelated with heavy metals through functional groups and is stably anchored on the surface of hydrotalcite, Fe3O4 is used as a magnetic substrate, the material is endowed with magnetism, and a hydrothermal one-step in-situ growth composite structure is realized. The composite material combines the advantages of humic acid, hydrotalcite and Fe3O4, the adsorption capacity is remarkably improved, chemical adsorption is enhanced, efficient solid-liquid separation is achieved, and the defects of traditional materials are overcome. When the bischofite is used as a heavy metal adsorbent, lead ions can be efficiently removed and rapidly recovered, the steps are simple, the cost is low, the effect is remarkable, a new way is developed for utilization of the bischofite in the salt lake, and the bischofite has subject and application values.

The present invention relates to the field of halogen-free organophosphorus flame-retardant nylon, and in particular to a nylon composite material, and a preparation method therefor and a use thereof. Specifically, the nylon composite material disclosed in the present invention comprises: 65-82 parts of polyamide resin, 12-18 parts of a hypophosphite flame retardant, 10-50 parts of a reinforcing agent, 0.5-2 parts of hydrotalcite, 3-8 parts of boehmite, and 1-3 parts of PET resin. The present invention solves the problem of corrosion of organophosphorus flame-retardant nylon materials to silicone under high-temperature conditions, and provides an organophosphorus flame-retardant nylon composite material resistant to silicone corrosion under high-temperature conditions, having a high CTI value and meeting the UL94 V0 flame retardant rating.