118 results about "Restorative material" patented technology

This invention discloses a visible-light-responsive dynamically covalently cross-linked self-healing polyurethane and its preparation method, belonging to the field of self-healing materials technology. The material is prepared by reacting diisocyanate, long-chain diol, butanediol, trimethylolpropane, and a monool containing an azophenylboronic acid structure in a certain proportion at 60°C. This invention achieves visible-light-responsive self-healing of the polyurethane material by introducing a visible-light-responsive azophenylboronic acid structure into the polyurethane and utilizing the photoresponsive cis-trans isomerization of the azo structure to regulate the reversible breakage and recombination of the boron-oxygen hexacyclic ring. The visible-light-responsive dynamically covalently cross-linked self-healing polyurethane material prepared by this invention maintains high mechanical strength (16.47 MPa) while exhibiting a strength self-healing efficiency of 95.8% after 8 hours of visible light irradiation, showing broad application prospects in smart materials, anti-corrosion coatings, and other fields.

The invention discloses a repair and conservation construction method for damaged travertine natural landscapes and geological landscapes. The method comprises the steps that the travertine landscape damage type and grade are evaluated based on the travertine damage area, depth and range; the method comprises the following steps: selecting homogeneous and in-phase high-calcium mineral materials and microbial agents to prepare primitive materials, and carrying out grading modulation, so that the primitive materials have a multi-stage pore structure; preparing a calcareous ecological restoration material by adopting an element material; the natural travertine building is repaired, constructed, subjected to infiltration reduction, subjected to leaking stoppage, maintained, conserved and expanded by using the calcium ecological restoration material through a series of construction methods; and after dynamic maintenance of the travertine construction body, restoration and conservation of natural landscape and geological landscape of travertine are completed. The method has the advantages of good environmental compatibility, high repairing efficiency and strong authenticity. The permeability coefficient of the repaired landscape reaches 10 <-4 >-10 <-2 > cm / s, the self-bonding strength is 1-25 MPa, biological co-deposition can be effectively adhered, continuous deposition of newborn travertine on the surface of travertine is promoted, and the method has wide application prospects.

The invention discloses a sodium alginate embedded iron-carbon microcapsule material for repairing cadmium and arsenic polluted soil and a preparation method of the sodium alginate embedded iron-carbon microcapsule material, and belongs to the technical field of soil heavy metal pollution repairing materials. The material comprises straw biochar, high-iron steel slag powder, a sulfydryl acetylated chitosan-iron monatomic cluster compound, a boron-doped graphitized carbon coated cobalt ferrite nanosheet, sodium alginate, calcium chloride and sodium carbonate. Wherein the sulfydryl acetylated chitosan is prepared by reacting chitosan with sulfydryl acetic anhydride, dialyzing and drying, and performing solvothermal reaction with ferric nitrate under high pressure. The preparation method comprises the following steps: pyrolyzing and drying the straw biochar, reacting the high-iron steel slag with sulfuric acid, adding the biochar, adjusting the pH value, adding sodium carbonate, mixing to obtain an iron-carbon-based passivation material, mixing with two modified compounds, mixing with a sodium alginate solution, dropwise adding a calcium chloride solution, and stirring and curing. The material can be applied to remediation of cadmium and arsenic polluted soil.

The invention relates to the technical field of repairing materials, and discloses a concrete crack self-repairing material based on microorganism synergistic mineralization and application, the concrete crack self-repairing material comprises a microbial population, the microbial population is composed of basophilic calcium carbonate generating bacteria, urea hydrolytic bacteria and silicate mineralizing bacteria, and the microbial population is used for generating calcium carbonate and calcium silicate minerals in an alkaline environment; repairing concrete cracks; the microcapsules are used for responding to humidity or temperature changes in the crack environment and releasing microbial populations and mineralization activating factors; a mineral carrier comprising bentonite, zeolite or magnesium silicate, for carrying a population of microorganisms and providing an attachment surface; and the repair activation particles can start mineralization reaction when the crack occurs to fill the crack. By increasing the proportion of microbial populations, the survival and activation conditions of microorganisms are optimized, the rate of mineralization reaction is improved, and the acceleration of the crack repair process is realized, so that the effect of remarkably improving the repair speed is achieved.

The invention relates to the cross technical field of industrial solid waste resource utilization and environmental pollution abatement, and discloses a modified fly ash environmental remediation material as well as a preparation method and application thereof. According to the material, industrial solid waste fly ash is used as a raw material, a glass body structure is destroyed through physical or chemical modification treatment, the specific surface area is increased, active functional groups such as surface hydroxyl groups are enriched, and the adsorption and fixation capacity on heavy metal lead (Pb < 2 + >) and cadmium (Cd < 2 + >) is remarkably improved. The chemical modification adopts an acid solution or an alkali solution, and the preparation method comprises the steps of raw material pretreatment, modification reaction, solid-liquid separation and washing, and drying and screening. When the material is applied to heavy metal contaminated soil remediation, heavy metal in an ion exchange state is promoted to be converted into a stable residue state, the bioavailability and the leaching risk of the heavy metal are remarkably reduced, meanwhile, high-added-value resource utilization of the fly ash is achieved, and the material has environmental, economic and social benefits and is suitable for large-scale remediation of Pb and Cd single or combined contaminated soil.

The invention discloses a preparation method and application of a biochar-coated LDH-oyster shell-microbe composite material, and belongs to the technical field of soil remediation. The preparation method comprises the following steps: preparing a biochar-CaFe LDH composite material by a hydrothermal coprecipitation method, modifying an oyster shell passivation material, using the modified oyster shell passivation material as a bacillus subtilis immobilization carrier, and preparing the biochar-LDH-oyster shell-microorganism composite material. According to the method, a combined remediation technology is adopted, the excellent characteristics of the biochar are fully utilized, and more point locations are provided for microorganism loading by changing the properties of the oyster shells. The prepared composite material has a good passivation effect on different ion types of heavy metals such as cadmium, lead, arsenic and chromium in soil, the defects of a single remediation method or a remediation material are overcome, multiple heavy metals in the soil are treated at the same time, and the remediation efficiency is improved.

The invention discloses a water-based environment-friendly emulsion and application thereof in real stone paint coating, and belongs to the technical field of real stone paint coating. A sodium alginate microcapsule coated with bisphenol A epoxy resin is grafted with benzotriazole acyl chloride through acylation reaction to obtain a benzotriazole modified sodium alginate microcapsule; the preparation method comprises the following steps: stirring and mixing styrene-acrylic emulsion, benzotriazole modified sodium alginate microcapsules, a microcapsule corrosion inhibitor, vermiculite powder and diphenyl imidazole to obtain water-based environment-friendly emulsion; benzotriazole acylating chloride can reduce the probability of oxidation rupture of a sodium alginate shell layer and protect a repairing material in the sodium alginate microcapsule, so that the self-repairing performance of the sodium alginate microcapsule is effectively maintained. The water-based environment-friendly emulsion is applied to a real stone paint coating, has the advantages of outstanding self-repairing performance, strong aging resistance, difficult yellowing after long-term use, good anti-pollution performance, compact and smooth surface, difficult attachment of pollutants, strong binding power and difficult peeling, and can improve the decorative effect and prolong the service life of the real stone paint.

The invention belongs to the field of environmental governance. The invention provides a birnessite-oxygen-releasing agent composite bottom mud repair material and preparation and application methods thereof, the birnessite-oxygen-releasing agent composite bottom mud repair material comprises a modified oxygen-releasing agent, birnessite, microbial flora and an embedding matrix, the embedding matrix comprises hydrogel formed by crosslinking calcium alginate, polyvinyl alcohol and water, the microbial flora comprises a domesticated aerobic nitrogen and phosphorus removal mixed flora. According to the birnessite-oxygen release agent composite bottom mud remediation material, the photoelectrocatalytic activity of birnessite is utilized to cooperate with the oxygen release capacity of an oxygen release compound, the oxidation-reduction potential of bottom mud is improved, the continuous degradation capacity of the material to organic pollutants is enhanced, nitrogen pollutants in a water environment are removed cooperatively, and the in-situ remediation effect of the bottom mud is enhanced; the method is applied to bottom mud remediation, is more efficient and environment-friendly, and has a long-term effect.

The invention relates to a composite slow-release material for groundwater remediation and a preparation process thereof, and relates to the technical field of groundwater remediation materials.The composite slow-release material is prepared from, by mass, 20-40 parts of a composite oxidizing agent, 30-50 parts of an inner-layer wall material, 10-20 parts of glucose, 40-60 parts of an outer-layer wall material and 5-15 parts of self-Fenton mesoporous titanium dioxide. The preparation process comprises the following steps: preparing the self-Fenton mesoporous titanium dioxide, preparing the inner-layer micro-capsule and preparing the composite sustained-release material. The composite slow-release material has the effect of improving the pollutant degradation performance of the composite slow-release material, the composite slow-release material has good oxidative degradation capacity, growth and metabolism of microorganisms in underground water can be promoted, the composite slow-release material cooperates with the microorganisms to degrade pollutants, and the removal efficiency of the pollutants and the durability of the repairing effect are improved.

The invention discloses a submicron sphere soil remediation material as well as a preparation method and application thereof. The remediation material takes modified silicon dioxide as an inner core, nano zero-valent iron as a middle layer and aluminum oxide as an outer layer; the mass ratio of the inner core to the middle layer to the outer layer is (30-50): (20-40): (10-50). The remediation material synthesized through the method has the advantages of being good in soil compatibility, high in cyclic utilization rate, high in heavy metal removal efficiency and the like, and the target of low-energy-consumption remediation of the heavy metal contaminated soil can be achieved.

The invention relates to an anti-cracking and anti-stripping coating and a preparation method thereof. The coating is prepared from the following components in parts by weight: 20 to 30 parts of acrylic acid modified epoxy resin, 15 to 25 parts of waterborne polyurethane dispersion, 5 to 10 parts of nano silicon dioxide, 3 to 8 parts of nano calcium carbonate, 10 to 15 parts of anti-crack microcapsules, 1 to 3 parts of silane coupling agent, 5 to 10 parts of polyether polyol, 0.2 to 1 part of defoaming agent, 2 to 5 parts of coalescing agent, 0.3 to 1 part of thickening agent, 0.1 to 0.5 part of flatting agent and 30 to 50 parts of deionized water. Wherein the capsule core of the anti-crack microcapsule is polyamic acid, the capsule wall of the anti-crack microcapsule is polyurea formaldehyde, a repairing material can be released when the coating cracks, and a three-dimensional network structure is formed through esterification reaction of carboxyl of the polyamic acid and hydroxyl of polyether polyol so as to repair cracks. After the nano filler is subjected to surface modification by the silane coupling agent, the binding force between the nano filler and a resin matrix is remarkably enhanced, and the crack resistance and the adhesive force of the coating are improved. Through the synergistic effect of the acrylic acid modified epoxy resin and the waterborne polyurethane, the coating has flexibility and wear resistance.

The present invention provides a bone defect repair material and a preparation method and use thereof, belonging to the field of bone repair materials. The bone defect repair material is prepared using polylactic acid-glycolic acid copolymer and calcium phosphate material as raw materials, wherein the mass ratio of polylactic acid-glycolic acid copolymer and calcium phosphate material is (5-7): (3-5). The bone defect repair material prepared by the present invention using high-temperature melting 3D printing technology has low-priced and easy-to-obtain raw materials, low-cost processing methods, simple and convenient processing methods, and easy to use in hospital scenarios, and the obtained bone defect repair material has high precision, which can ensure the precise design and manufacture of microporous structures.

The invention provides a double-repairing-material composite system for self-repairing internal and external cracks of concrete, which comprises an internally doped composite dry powder repairing agent and an externally coated intelligent repairing liquid, the internal doping type composite dry powder repairing agent comprises high-activity modified silicate, silica fume, a composite catalyst, a calcium sulphoaluminate expanding agent, a magnesium oxide expanding agent, epoxy resin microcapsules, surface modified polypropylene fibers, a microbial carrier, a polycarboxylate superplasticizer, a dispersing agent and filler. The external coating type intelligent repairing liquid comprises an alkyl alkoxy silane mixture, a waterborne epoxy-acrylic acid hybrid emulsion, a latent curing agent, superfine core powder, nano silicon dioxide dispersion liquid, nano calcium carbonate, colored active mineral powder, a wetting agent, a defoaming agent, a flatting agent, a mildew preventive and water. Related preparation methods and uses are also provided. The double-repairing-material composite system is easy and convenient to use, can achieve multiple triggering and synergistic effect, can repair internal and external cracks at the same time, and is good in repairing effect.

The invention discloses selective laser melting biological ceramic powder for dental restoration and a preparation method thereof, and belongs to the technical field of dental restoration materials. The composite ceramic material comprises the following raw materials in parts by weight: 50-100 parts of composite ceramic powder and 0.1-2 parts of an absorbent, the composite ceramic powder comprises at least two of Al2O3, ZrO2, SiO2 and TiO2; the absorbent comprises any one of TiC, SiC, ZrC, TiN and graphite; the fluidity of the selective laser melting biological ceramic powder for dental restoration is 39-40 s / 50 g. According to the invention, the SLM process adaptability of the material is obviously improved, the inherent biocompatibility, mechanical strength and stability of biological ceramics are considered, and the technical barrier that traditional biological ceramic powder is difficult to be directly used for selective laser melting is overcome; and a feasible material solution is provided for direct additive manufacturing of personalized dental prostheses with high performance and complex structures.

The invention discloses a preparation method of a recoverable self-repairing anti-corrosion coating, which comprises the following steps: coating a concentrated solution or melt of polylipoic acid on a metal substrate by a dip-coating method, and cooling to obtain the recoverable self-repairing anti-corrosion coating, or adding metal ions into a concentrated solution or melt of polylipoic acid, reacting for 30 seconds to 20 minutes, coating a metal substrate with a reaction product, and cooling to obtain the recoverable self-repairing anti-corrosion coating, or adding metal ions into a concentrated solution or melt of polylipoic acid, reacting for 30 seconds to 20 minutes, adding the filler dispersion liquid, uniformly stirring, coating on the metal substrate, and evaporating the solvent to obtain the recoverable self-repairing anticorrosive coating. And the barrier property of the damaged coating can be completely recovered in a corrosion environment within only 12 hours at the soonest, so that high-efficiency extraction and recovery of a self-repairing material and high-efficiency circulation of carbon resources are realized.

The invention provides a biochemical composite soil heavy metal pollution fixing and repairing material and a preparation method thereof.The preparation method comprises the steps that biochar is subjected to acid treatment, and activated biochar is obtained; uniformly mixing calcium salt, ferric salt, aluminum salt and deionized water to obtain a mixed salt solution, adding urea to obtain a precursor solution, dipping the activated charcoal in the precursor solution, and then performing hydrothermal reaction to obtain loaded charcoal; mixing and grinding the oyster shell powder and dipotassium phosphate, and calcining at high temperature to obtain activated oyster shell powder; mixing the bacillus subtilis liquid, the activated oyster shell powder and trehalose, oscillating, centrifugally separating, and freeze-drying to obtain the biological composite material. Uniformly mixing the loaded biochar, the biological composite material and a carboxymethyl cellulose solution, granulating, and drying wet granules to obtain the biochemical compound type soil heavy metal pollution fixing and repairing material. According to the prepared fixing and repairing material, the fixing efficiency and adaptability to various heavy metals in soil are improved.

The invention discloses a durable anti-seepage repairing material and a preparation method thereof, and belongs to the technical field of anti-seepage plugging materials. The anti-seepage material is prepared from a sulphoaluminate base material, calcium aluminate-chitosan microcapsules, an enzymatic deposition material, an emulsion and a functional auxiliary agent; the sulphoaluminate base material is prepared from sulphoaluminate, calcium carbonate, anhydrite and silica fume; according to the calcium aluminate-chitosan microcapsule, a core material is calcium aluminate, and a wall material is composed of chitosan and methyl cellulose; the enzymatic deposition material is composed of urease and bacterial cellulose nanofibrils and urea microcapsules, the core material of the urea microcapsules is urea, and the wall material of the urea microcapsules is sodium alginate; the emulsion is prepared from epoxidized soybean oil acrylate, chitosan nanocrystals, bacterial cellulose nanofibrils and a photoinitiator; the functional additive is composed of a polycarboxylate superplasticizer, a retarder and a defoaming agent. The anti-seepage repair material prepared by the invention has excellent toughness, and can be repaired and healed after cracking.

The application belongs to the field of environmental governance, and provides a water sodium manganese ore-oxygen releasing agent composite type sediment repair material and a preparation and application method thereof, which comprises modified oxygen releasing agent, water sodium manganese ore, microbial flora and embedding matrix, the embedding matrix comprises calcium alginate, polyvinyl alcohol and water cross-linked formed hydrogel, wherein the microbial flora comprises domesticated aerobic denitrification and phosphorus removal mixed flora.The water sodium manganese ore-oxygen releasing agent composite type sediment repair material utilizes the photoelectric catalytic activity of water sodium manganese ore and the oxygen releasing ability of oxygen releasing compound, improves the oxidation-reduction potential of sediment, enhances the sustained degradation ability of organic pollutants, cooperatively removes nitrogen pollutants in water environment, enhances the in-situ repair effect of sediment, is applied to sediment repair, and is more efficient, environment-friendly and has long-term effect.

To provide an apatite-zirconium oxide composite having high mechanical strength and low elastic modulus, a restorative material, a medical device, and a method for producing a calcium phosphate-carbon atom-zirconium oxide composite.SOLUTION: A calcium phosphate-carbon atom-zirconium oxide composite comprises tricalcium phosphate, apatite represented by formula (1): Cas(PO4)t(X)u, and carbon atoms, and further comprises zirconium oxide, wherein in formula (1), X represents at least one selected from the group consisting of OH and CO3, s represents a number of 8 to 10, t represents a number of 4 to 6, and u represents a number of 1 to 2.SELECTED DRAWING: Figure 1

The invention provides a composite bone repair material and a preparation method thereof, and relates to the field of additive manufacturing bone tissue repair materials.The preparation method comprises the following steps that 1, an amorphous copper calcium phosphate nanometer material and a substrate material solution are mixed, and a substrate / amorphous copper calcium phosphate composite material is obtained; wherein the substrate material is a high polymer material; the preparation method comprises the following steps: mixing an amorphous copper calcium phosphate nano material with a solution of a substrate material to obtain a substrate / amorphous copper calcium phosphate composite material, and preparing the substrate / amorphous copper calcium phosphate composite material into the composite bone repair material. Wherein calcium ions in the amorphous copper calcium phosphate nano material are beneficial to promoting bone tissue regeneration, and copper ions have remarkable antibacterial performance, so that the obtained composite bone repair material has osteogenesis and antibacterial performance, and the problems of infection and the like after an existing clinical bone repair material is implanted are solved.

The invention relates to the technical field of ecological restoration materials, in particular to an ecological restoration material based on inorganic-organic compounding and a preparation method thereof. The ecological restoration material is prepared from the following raw materials in parts by weight: 55 to 65 parts of crushed coal gangue, 40 to 45 parts of Portland cement, 15 to 20 parts of polyacrylamide, 8 to 12 parts of starch, 25 to 30 parts of citric acid leached fly ash, 20 to 25 parts of organic matter, 7 to 11 parts of mica powder-doped improved effect comprehensive agent, 5 to 8 parts of multi-conditioning multi-feeding agent, 4 to 6 parts of silane coupling agent KH560, 2 to 4 parts of passivating agent, 1 to 3 parts of chelating agent and 30 to 35 parts of deionized water. The prepared ecological restoration material has excellent organic matter improvement performance and heavy metal passivation effect, meanwhile, the vegetation planting effect, the product strength, the anti-erosion effect and the freezing and cold resistance effect are remarkable, and the comprehensive coordination effect of the product is excellent.

The invention relates to the technical field of glass ceramics, and discloses a dental glass ceramic and a preparation method thereof. The invention discloses a high-temperature-resistant ceramic which comprises the following components in percentage by mole: 40-60% of silicon dioxide, 10-25% of sodium oxide, 0-5% of potassium oxide, 10-25% of aluminum oxide, 1-8% of diboron trioxide, 2-13% of 3YSZ, 1-5% of lithium oxide, 1-5% of calcium oxide, 0.3-2% of titanium dioxide, 0-4% of phosphorus pentoxide, 0-0.2% of lanthanum oxide, 0.1-1% of a clarifying agent, 0-1% of a coloring agent and 0.05-0.5% of F <->, wherein Al2O3 / Na2O + K2O is more than 0.7 and less than 1.1; 3 YSZ + P2O3 + TiO2 is more than 2% and less than 16%; the ratio of B2O3 to Al2O3 is greater than 0.2; the 3YSZ is tetragonal phase ZrO2 containing 3% of a Y2O3 stabilizer. The dental glass ceramic has good mechanical properties and a lower coefficient of thermal expansion, and can effectively improve the problems of interface stress concentration caused by a high coefficient of thermal expansion of the existing dental repair material and irregular shrinkage deformation adaptation of a dental crown material and the like.

The application belongs to the technical field of cement-based grouting and provides a water-based epoxy resin mortar rapid repair material for rapid repair of high-iron tunnel water leakage disease and a preparation process, which is made of the following components: 80-110 parts of magnesium phosphate cement, 5-20 parts of water-based epoxy resin, 8-25 parts of epoxy resin curing agent, 10-25 parts of fly ash, 5-10 parts of retarder, 1-2 parts of defoaming agent and 12-25 parts of water; the magnesium phosphate cement comprises magnesium oxide and phosphate; the magnesium oxide is a mixture of dead-burned magnesium oxide and light-burned magnesium oxide, and the mass ratio of the two is 3:1-20:1. The grouting material prepared by the formula and the preparation method has the advantages of short setting time, high early strength, strong wet adhesion, good durability and good fluidity.

The invention relates to the field of water and soil pollution treatment, in particular to a method for reinforcing and fixing hexavalent chromium pollutants based on iron oxide in-situ vulcanization coupling organic matter, which comprises the following steps: step 1, injecting a vulcanizing agent into a hexavalent chromium polluted area, so that in-situ iron oxide minerals are subjected to vulcanization modification to generate modified minerals; 2, a natural organic acid solution is injected and reacts with the modified minerals, the fixing efficiency on hexavalent chromium is enhanced, and an iron sulfide oxide mineral-organic composite repairing material is generated in situ; and 3, the iron sulfide oxide mineral-organic composite repairing material reacts with hexavalent chromium, trivalent chromium precipitates are generated, and long-acting fixation of hexavalent chromium is achieved. The remediation efficiency and the application range of hexavalent chromium are remarkably improved, meanwhile, the method has the advantages of being simple and convenient in process, low in cost, environmentally friendly and the like, the method is particularly suitable for large-scale site remediation and practical engineering application, and a reliable technical means is provided for soil and underground water chromium pollution treatment.

Abstract A coal-based solid waste eco-restoration material and preparation method are provided. The preparation method includes: mixing and placing calcium oleate, sodium silicate, polyvinylpyrrolidone, oleylamine, anhydrous ethanol, and water in a hydrothermal reactor, heating at a constant temperature, centrifuging, and washing to collect inorganic nano-seed crystal; seeding the inorganic nano-seed crystal to form a cementitious material; mixing coal gangue powder with the cementitious material, mineral activator, and physical pore-forming foam, then curing, crushing, and screening to prepare a porous sandy loam matrix; uniformly mixing the prepared porous sandy loam matrix, coal slime, and composite microbial agent, and then fermenting and maturing to obtain the coal-based solid waste eco-restoration material. Compared with the traditional aluminum powder chemical foaming and strong acid foaming, the physical foaming technology adopted in the present disclosure improves the safety of operation while reducing the cost, and is convenient for standardized production. According to the activation of bacteria-fungi composite microbial agent, the nutrient elements in eco-restoration materials can be fully released. The eco-restoration material can be applied to the fields of mine soil restoration, land reclamation and other environmental restoration. FIG. 1 Abstract A coal-based solid waste eco-restoration material and preparation method are provided. The preparation method includes: mixing and placing calcium oleate, sodium silicate, polyvinylpyrrolidone, oleylamine, anhydrous ethanol, and water in a hydrothermal reactor, heating at a constant temperature, centrifuging, and washing to collect inorganic nano-seed crystal; seeding the inorganic nano-seed crystal to form a cementitious material; mixing coal gangue powder with the cementitious material, mineral activator, and physical pore-forming foam, then curing, crushing, and screening to prepare a porous sandy loam matrix; uniformly mixing the prepared porous sandy loam matrix, coal slime, and composite microbial agent, and then fermenting and maturing to obtain the coal-based solid waste eco-restoration material. Compared with the traditional aluminum powder chemical foaming and strong acid foaming, the physical foaming technology adopted in the present disclosure improves the safety of operation while reducing the cost, and is convenient for standardized production. According to the activation of bacteria-fungi composite microbial agent, the nutrient elements in eco-restoration materials can be fully released. The eco-restoration material can be applied to the fields of mine soil restoration, land reclamation and other environmental restoration. Mixing and placing calcium oleate, sodium silicate, S10 polyvinylpyrrolidone, oleylamine, anhydrous ethanol, and water in a hydrothermal reactor, heating at a constant temperature, centrifuging, and washing to collect inorganic nano-seed crystal; Seeding the inorganic nano-seed crystal to form a cementitious S20 material; mixing coal gangue powder with the cementitious material, mineral activator, and physical pore-forming foam, then curing, crushing, and screening to prepare a porous sandy loam matrix; Uniformly mixing the prepared porous sandy loam matrix, coal S30 slime, and composite microbial agent, and then fermenting and maturing to obtain the coal-based solid waste eco-restoration material. FIG. 1 20 25 20 15 77 04 M ar 2 02 5 2 0 2 5 2 0 1 5 7 7 0 4 M a r 2 0 2 5 a n d o t h e r e n v i r o n m e n t a l r e s t o r a t i o n . S 1 0 S 2 0 S 3 0 F I G . 1 2 0 2 5 2 0 1 5 7 7 0 4 M a r 2 0 2 5 a n d o t h e r e n v i r o n m e n t a l r e s t o r a t i o n . S 1 0 S 2 0 S 3 0 F I G . 1 1 / 2 FIG. 1 FIG. 2 1 / 2 Mixing and placing calcium oleate, sodium silicate, S10polyvinylpyrrolidone, oleylamine, anhydrous ethanol, and water in a hydrothermal reactor, heating at a constant temperature, centrifuging, and washing to collect inorganic nano-seed crystal; Seeding the inorganic nano-seed crystal to form a cementitious S20 material; mixing coal gangue powder with the cementitious material, mineral activator, and physical pore-forming foam, then curing, crushing, and screening to prepare a porous sandy loam matrix; Uniformly mixing the prepared porous sandy loam matrix, coal S30 slime, and composite microbial agent, and then fermenting and maturing to obtain the coal-based solid waste eco-restoration material. FIG. 1 Inorganic nano-seed crystal Hydration products 5 um FIG. 2 20 25 20 15 77 04 M ar 2 02 5 S 1 0 2 0 2 5 2 0 1 5 7 7 0 4 M a r 2 0 2 5 S 2 0 S 3 0 F I G . 2 S 1 0 2 0 2 5 2 0 1 5 7 7 0 4 M a r 2 0 2 5 S 2 0 S 3 0 F I G . 2

The invention relates to lithium silicate low-quartz glass ceramics which are characterized by a combination of very good mechanical and optical properties and thus can be used in particular as repair materials in dentistry.

An eco-remediation material is disclosed, obtained by modifying sodium hexametaphosphate bentonite with a biosurfactant; wherein the weight ratio of biosurfactant to sodium hexametaphosphate bentonite is (5-10):100. Furthermore, the application of this eco-remediation material to the remediation of contaminated soil in landfills is also disclosed. Compared with existing technologies, this eco-remediation material exhibits higher expansion characteristics and lower permeability.

A bio-composite plastering material and a method of making the same are provided. The bio-composite plastering material includes a mixture of sand-silica, Abelmoschus esculentus powder, and multi-walled carbon nanotubes. The bio-composite plastering material has increased compressive strength depending upon the concentration of Abelmoschus esculentus powder and multi-walled carbon nanotubes used. The method of making the bio-composite plastering material includes sieving the sand-silica to produce sand-silica of a uniform particle size, mixing powdered Abelmoschus esculentus powder with the sand-silica to produce a first mixture, mixing water with the first mixture to produce the bio-composite plastering material, and enhancing the bio-composite material by adding multi-walled carbon nanotubes. The bio-composite plastering material may then be plaster cast, such as by pressing the bio-composite plastering material in a hot press and drying the resulting bio-composite material in an oven.

This invention provides a dental enamel veneer restorative material and its preparation method, belonging to the technical field of ceramic molding products. To further improve the adhesion of dental veneer materials, reduce the amount of tooth structure removed, and decrease the risk of chipping and detachment, this invention uses zirconium oxide, alumina, hydroxyapatite, dimethylsilylated silica, silicon dioxide, fluorapatite, magnesium oxide, thermosetting acrylic resin, aluminum hydroxide gel, silane coupling agent, polyvinyl alcohol, and sodium inositol hexaphosphate as raw materials. These components are combined in specific proportions, and a special process is used to prepare the dental veneers. While ensuring good biocompatibility, high hardness, and wear resistance, this invention further improves adhesion, reduces the amount of tooth structure removed, decreases the risk of chipping and detachment, extends service life, and provides a better user experience.

A material restoration system for restoring material surfaces, the material restoration system comprising: a first composition including at least fifty percent alcohol by volume; at least twenty percent cutting oil by volume; denatured alcohol; C9-11 Pareth-8; Sodium C14-16; Sodium laureth sulfate; Sodium chloride; and Sodium xylenesulfonate.