743results about How to "Stable physical properties" patented technology

The invention provides an unsaturated hydrocarbon selective hydrogenation catalyst and a preparation method thereof. The catalyst uses alumina as a carrier and palladium as an active ingredient, and is characterized by comprising the following components by weight percentage: 0.1 to 1.0 percent of the palladium, 0.3 to 8.0 percent of a rare earth metal, 0.1 to 5.0 percent of alkaline-earth metal, and 0 to 3.0 percent of fluorine which can also be contained in the catalyst, based on the total weight of the catalyst. The catalyst carrier is theta or mix-crystal type Al2O3, and the priority is given to the theta crystal type. In the invention, the catalyst palladium is preferably distributed in a secondary outer layer of the catalyst. The catalyst has certain impurity resistance and coking resistance, is applicable to a section of selective hydrogenation process in full distillate cracked gasoline and unsaturated hydrocarbon selective hydrogenation process in other distillate oils.

The present ivnention relates to a high-strength ultrafine fibre imitation leather. It is made up by using sea-island ultrafine fibre base cloth through processes of impregnating with polyurethane, extracting treatment and after-finishing. The described base cloth is a double-layer or more than double-layer composite base cloth formed from sea-island composite fibre woven fabric and non-woven fabric which are combined together by means of needling process or cohesive process, then said invention makes the composite base cloth undergo the processes of impregnating with polyurethane, hardening, extracting 'sea' component in the solvent capable of removing 'sea' component from sea-island fibre to obtain semifinished product, widening forming, mellowing, dyeing, grinding or sticking film so as to obtain the invented product.

The invention relates to a biodegradable multilayer material, which can be a thin film material or a sheet material. The biodegradable multilayer material at least comprises one of an adipic butanediol terephthalate copolymer (PBAT) / PBAT-chain extender-polypropylene carbonate (PBAT-Co-PPC) / PPC blend layer, a PBAT / PBAT-chain extender-polylactic acid (PBAT-Co-PLA) / PLA blend layer and a PBAT / PBAT-chain extender-polyhydroxyalkanoate (PBAT-Co-PHA) / PHA blend layer, and blend resins are respectively prepared through twin-screw reactive extrusion. The multilayer material is produced by using extrusion and coextrusion methods, has a function that the transmission rates of oxygen, carbon dioxide and water vapor can be adjusted, and can be applied to the packaging field and the agriculture field, and especially applied to food packaging, pharmaceutical packaging, and ground film mulching.

The invention discloses an aluminum oxide ceramic substrate with high heat conductivity. The aluminum oxide ceramic substrate is prepared by steps of stirring a ceramic powder material, a binder, a plasticizer, a dispersant and a solvent uniformly, preparing a ceramic raw-ceramic substrate through a tape casting method, glue discharging and sintering. The aluminum oxide ceramic substrate is characterized in that the solvent is a mixture of butanol, isopropanol and butyl acetate, and the ceramic powder material comprises aluminium oxide powder and auxiliary agents. The invention also discloses a preparation method for the aluminum oxide ceramic substrate with the high heat conductivity. According to the aluminum oxide ceramic substrate and the preparation method, the solvent system which comprises the butanol, the isopropanol and the butyl acetate are used as the main solvent in place of traditional toluene, thus enhancing dissolution of PVB by the solvent, thereby guaranteeing uniformity of raw ceramic slurry, making physical properties of sintered ceramic stable, reducing environmental influences of the exhausted gas during production processes compared to traditional modes of production, contributing to energy conservation and emission reduction, and reducing the cost.

The invention discloses an anti-freeze aerated concrete brick. The anti-freeze aerated concrete brick is prepared from the following raw materials in parts by weight: 35-40 parts of fly ash, 15-20 parts of cement, 15-20 parts of wollastonite powder, 5-10 parts of modified straw ash, 2-4 parts of gypsum, 0.05-0.1 part of aluminum powder, 2-4 parts of urea, 0.01-0.03 part of oxyparaffin soap, 1-2 parts of sugar calcium, 4-6 parts of calcium formate, 0.1-0.5 part of polyethylene wax powder, 4-6 parts of calcium carbonate, 0.2-0.4 part of calcium nitrate, 0.1-0.2 part of sodium acetate and right amount of water.

The invention provides a rapid detection method based on gold magnetic particle-labeled immunochromatography, aiming at solving the problems that a detection method of a traditional immunity chromatography analysis method is easy to generate subjective differentiation and has low detection accuracy and sensitivity, complicated operation and narrow application field in clinical practice. The basic idea of the detection method is as follows: the gold magnetic particles coupled with an antibody, a ligand and an antigen can rapidly and quantitatively and high sensitively detect an assay in a matched working solution and an immunochromatography device in future. The detection method can interpret visually according to the characteristic colors of the gold magnetic particles and can detect the assay quantitatively according to the strength of the signals of the gold magnetic particles, is simple, has low cost, and can realize disease detection on human and animals and plants, environmental detection, food safety detection, drug and medicine abuse detection and the like.

For the continuous hydrolysis of organochlorosilane, a reaction system comprising at least three stages of hydrolysis is used. Each stage includes a reactor and a phase separator wherein hydrolysis is effected to form a hydrolysis mixture which is separated into a hydrolyzate and a hydrogen chloride-containing aqueous medium. The separated aqueous medium is circulated to the reactor. The hydrolyzate is conveyed to the reactor of the subsequent stage. The organochlorosilane is fed into the first stage reactor, the aqueous medium containing an amount of water corresponding to the consumption in one stage is fed into one stage reactor from the subsequent stage, and an amount of water corresponding to the consumption in the overall reaction system is fed in the last stage. Then the entire amount of hydrogen chloride generated in multiple stages of hydrolysis is recovered as anhydrous hydrogen chloride from the first stage. The entire amount of the aqueous media separated in the phase separators is retained in the reaction system.

The invention relates to a blanc fixe cementitious rock soil-like material and a method for making simulative rock from the blanc fixe cementitious rock soil-like material and belongs to the technical field of rock material simulation in a geomechanical model test. The blanc fixe cementitious rock soil-like material comprises blanc fixe as a aggregate, bentonite as an auxiliary material, and dilute glue composed of 107 glue and water. The method comprises the following steps of drawing a water-binder ratio-shearing strength f curve by the blanc fixe cementitious rock soil-like material, calculating wet density of different batches of the blanc fixe cementitious rock soil-like materials, and making a small test-piece from different batches of the blanc fixe cementitious rock soil-like materials. The blanc fixe cementitious rock soil-like material has a low cost and no toxicity, can be processed into small blocks easily, and can satisfy requirements of a geomechanical model test on the blanc fixe cementitious rock soil-like material. Simulative rock made from the blanc fixe cementitious rock soil-like material does not influence a model building process and can be made fast so that a model test rate is greatly improved. The blanc fixe cementitious rock soil-like material is suitable for the field of a test on a model built by laying small blocks.

The invention relates to a concrete hardener with silicon crystals. The concrete hardener comprises silicate mixtures, nanometer silica sol and organic solvents. According to the scheme, the concretehardener with the silicon crystals has the advantages that the concrete hardener can be permeated into concrete, continuous chemical reaction can be carried out on the concrete hardener and the concrete, non-expansion, non-contraction and high-strength vitreous compounds with stable properties can be generated, concrete matrixes can be reinforced, sealed and hardened to form compact integral structures, the strength of the compact integral structures can be continuously reinforced along with the passage of time, and accordingly effects of sealing the hardened, strong, impervious, weather-resistant, abrasion-resistant, dust-free, efflorescence-free and gorgeous concrete which has enhanced chemical resistance and is firm just like steel can be realized; the concrete hardener is waterborne liquid and is safe and environmentally friendly; the concrete hardener is applicable to diversified new and old concrete floors including raw stock floors, terrazzo floors, carborundum abrasion-resistant floors and the like, and excellent effects of hardening and reinforcing loose floors with severe dusting can be realized by the concrete hardener.

The present invention provides a cement light mortar which is the thermal insulating material at the exterior wall surface of the building, the cement is taken as the base material, the mortar comprises a light weight aggregate, a polymer modified additive and a re-dispersible emulsion powder, the light weight aggregate is expanded perlite and lime dust, the polymeric additive is the combination of cellulose ether, lignocellulose, starch ether and the polypropylene short fiber, wherein, the expanded perlite is the organosilicon-modified expanded perlite. The invention has the following advantages: the thermal conducting coefficient of the invention is reduced greatly, the material has excellent heat preserving and heat insulating property, each strength index is increased greatly comparing with the conventional heat insulating mortar, has higher crushing strength for securing the safe using; the weight is light and the sole weight of the building and the burden to the base load are effectively reduced; the construction technique is same to the conventional coating mortar and the operation is rather simple; the physical property is stable and no empty projection or cracking will occur after construction. The activity is rather low. The mortar has a broad application field and has excellent compatibility and stick force to various wall bases, the product of the invention is nontoxic and smellless, inorganic and noncombustible.

The invention discloses a heavy metal ion adsorption type polyvinylidene fluoride (PVDF) hollow fiber membrane. The invention belongs to the technical field of membranes and in particular relates to a preparation technology for an organic-inorganic hybrid hollow fiber membrane. The heavy metal ion adsorption type PVDF hollow fiber membrane comprises modified attapulgite, wherein the mass ratio of the PVDF to the modified attapulgite is (1:0.01)-(1:0.1). The heavy metal ion adsorption type PVDF hollow fiber membrane has the advantages that high pressure resistance is achieved, a supporting body is not required, a membrane component has any sizes and shapes and large filling density, and unit volume membrane area and flux are large. In addition, the hybrid membrane is high in spinning performance, the spinning membrane-forming process is simple in process, and cost is low.

The invention discloses a plant cultivation medium and its preparation method. The cultivation medium includes a garden greening waste compost, vinegar residues and turf, and is prepared through blending the garden greening waste compost, vinegar residues and turf according to a volume ratio of 3-6:2-3:2-6. The cultivation medium improves the physical and chemical properties of original mediums, reduces the application amount of a nonrenewable medium turf which is massively used in the production of flowers at present, allows the vinegar residues and garden greening wastes to be massively used to realize changing of wastes into valuables and resource recycle, and has obvious social, ecologic and economic benefits.

The invention discloses a manufacture method of a cold-rolled electrolytic tin substrate. The manufacture method comprises the steps of: (1) processing the produced molten iron by converter smelting, vacuum treatment, continuous casting and hot rolling after desulfuration to obtain a cold-rolled material; (2) pickling by a shallow-trench turbulent push-pull hydrochloric acid pickling set; (3) carrying out cold rolling for the first time by using a six-roller HC reversing mill, and rolling to a semi-product with a thickness of 0.5 to 0.6 mm after passing through 4 to 7 rolling passes; (4) cleaning by an electrolytic degreasing set; (5) carrying out annealing for the first time in a full-hydrogen shine-cover annealing furnace; (6) carrying out cold rolling for the second time by using the six-roller HC reversing mill; (7) carrying out annealing for the second time in the full-hydrogen shine-cover annealing furnace; (8) leveling by using a four-roller leveling machine, wherein the rolling force is controlled between 3000 to 4500kN; and (9) trimming by a re-reeling set, oiling, packaging and storing in a warehouse. The manufacture method disclosed by the invention has the advantages of stable production and low production cost, and can meet the requirement for high-quality electrolytic thin substrate in the food package industry.

The invention belongs to the field of gas hydrate production and utilization and in particular relates to an accelerant capable of reinforcing gas hydrate generation and a preparation method thereof. The hydrate generation accelerant is a mixed water solution formed by compounding nano dispersed particles with a surfactant and dissolving the compound in water, wherein nano graphite powder is adopted as the nano dispersed particles; SDBS (sodium dodecylbenzenesulfonate) is adopted as the surfactant; based on the total amount of the mixed water solution, the mass fraction of the nano graphite powder is 0.05-1.5%, the mass fraction of SDBS is 0.02-0.08% and the balance is water. The accelerant has the obvious advantages that the mass and heat transfer processes of the hydrate can be greatly reinforced, the overall time of hydrate generation can be shortened and the synthetic efficiency of the hydrate can be improved by adopting the accelerant to reinforce the hydrate generation process; the graphite nano-particles can flow out along with liquid water and can be reused, thus saving the cost.

The present invention discloses a flower cultivation medium and a preparing method thereof. The flower cultivation medium of the invention comprises a main ingredient and additive, wherein the main ingredient comprises peat and perlite. The additive comprises a media moisture conditioner, a pH regulator and a nutrition activator. The grain diameter range of peat and perlite is 1-3mm. The flower cultivation medium media prepared according to the invention has the advantages of balanced nutrition, high content of nutrient component, stable physical property, reduced surface tension of media by the media moisture conditioner, increased wetting capacity and equality on the surface of media, changed external appearance stability of peat, prevented quick dissipation of water, increased water infiltration speed in actual use, remarkably improved water absorptivity of peat media and delayed weathering process of peat. The flower cultivation medium prepared according to the method of the invention has a reasonable nutrition structure, facilitates the absorbing of plant and satisfies the growth requirement of plant. When the cultivation medium according to the invention is used for cultivating flower, the rooting rate of flower is increased, the germination of seed is promoted and the survival rate of cutting.

The invention relates to an n-shaped titanium oxide nanotube / p-shaped diamond heterojunction photocatalytic material and a preparation method, belonging to the technical field of photocatalytic materials and the preparation thereof. The photocatalytic material is formed by growing an n-shaped TiO2 nanotube with an anatase structure on a p-shaped diamond. The preparation method comprises the following steps of: 1. growing a boron-doped p-shaped polycrystalline diamond film or boron-doped p-shaped diamond single crystal; 2. sputtering a ZnO seed crystal layer on a p-shaped diamond; 3. growing a ZnO nano rod on the ZnO seed crystal layer in the mixed water solution of zinc acetate and hexamethylene tetramine; and 4. growing the n-shaped TiO2 nanotube on the p-shaped diamond in the mixed solution of ammonium fluorotitanate and boric acid by using the ZnO nano rod as a template. The.TiO2 nanotube is prepared on the diamond by utilizing a liquid-phase synthesis method, thus heterojunction with excellent photocatalytic performance is obtained; and the method is simple, has low cost, and is suitable for large-scale production and application.

The invention illustrates herein several tests among various manufacturing methods and tests carried out by the inventors according to the method of manufacturing a silicone release polyester film. It should be noted that the technical spirit of the invention shall not be limited or restricted thereby, and can be modified and carried out variously by those skilled in the art. As described in the above, the silicone release polyester film according to the invention is very good in stabilization for pass-the-time and also very good in the property of rub-off after thermal ripening by improving adhesiveness between the polyester layer and the silicone layer by olgano resin having the vinyl radical in the silicone film layer. By improving easiness of release destruction behavior with the adhesive used for release by containing the olgano resin having the vinyl radical in hexenyl polysiloxane, the silicone release polyester film can be used for electronics and the field requiring uniform release. The silicone release polyester film according to the invention can solve the problems of weakened adhesiveness on an adhesive layer combined with the silicone layer resulting from silicone transfer in a process and of bad printing on the surface opposite to the adhesive layer, by allowing the property of minimized silicone transfer in which the content of silicone residue is below 10% by means of excellent silicone hardening.

The invention relates to cold-transfer printing thickener, printing paste thereof and a preparation method thereof, in particularly to cold-transfer printing paste comprising the following components: polysaccharide macromolecular compounds, L-PCA-Sodium (L-pyrrolidone carboxylic acid-sodium), etherified starch and water. The invention further relates to printing paste comprising the following components: reactive dye, defoaming agent, leveling agent, pH value stabilizer, water and printing thickener, which is selected from any one of the printing thickeners in the claims 1 to 6. Moreover, the invention further relates to the printing thickener and a method for preparing the printing paste. The cold-transfer printing thickener and the printing paste prepared from the cold-transfer printing thickener in the invention are suitable for the production process of cold-transfer printing; and owing to the stable physical properties, the printing thickener leads to no reduction in viscosity when in use.

The invention relates to a preparation method of a multifunctional humidifying interior wall paint. A basic formula is as below: 12%-35% of emulsion, 5%-20% of titanium dioxide, 10%-20% of diatomite, 1%-6% of sepiolite, 3%-10% of a zinc oxide whisker composite additive, 0.1%-0.5% of water-absorbent resin, 5%-10% of calcium carbonate, 1%-3% of talcum powder, 1%-5% of propylene glycol, 2%-5% of an additive agent and 20%-35% of deionized water. The multifunctional humidifying interior wall paint fully complies with the indexes of GB / T9756-2001, and also has effects of temperature control and adjustment, energy saving, environmental protection, moisture absorption, moisture liberation, humidifying to prevent moisture condensation, purifying the air, negative ion ecology and killing bacteria and mold, and can be widely used in inside wall coating of living room, classroom, office and hospital.

The invention discloses a method for producing an aerated building block with phosphogypsum as a main raw material. The method comprises the steps of: adding phosphogypsum, industrial waste residues, mineral activator main components and aluminum powder or aluminum paste to a stirrer with adjust rotation speed, adding water, stirring, slowly stirring for 3min, then rapidly stirring for 2min, then adding mineral activator auxiliary components and auxiliary agents, rapidly stirring for 3min, pouring the obtained slurry to a mold, foaming for 30-40min, then standing and maintaining at 50-55 DEG C for 4h, demolding, cutting, and carrying out normal-pressure steam maintaining for 16-24h to obtain the aerated block. Compared with the prior art, the method has the advantages that the obtained aerated building block has stable physical performance and good heat insulation property, the utilization rate of phosphogypsum is high, the process is simple, the cost is low, natural resources are saved, and the like. The obtained product can be widely applied to non-bearing partitions of urban high-rising buildings, low-temperature heat insulation of industrial equipment and the heat-insulation block of refrigeration warehouses.

The invention relates to a fast method for shaping resin composite material element, employing epoxy resin (E-51) and acrylic acid, carbonized silicon crystal whisker as intensifier, N,N-dimethylaniline as accelerant, p-methyl phenoxide as inhibitor, trimethylolpropane acrylate as diluting monomer, isopropyl thioxanthones as photo-initiation agent, silane coupling agent (KH-560) as modifier, and methanol as dissolvent. The method comprises following steps: synthesizing epoxy acrylate, diluting with trimethylolpropane acrylate, synthesizing photosensitive resin, synthesizing resin composite material miscible liquids with photosensitive resin and carbonized silicon crystal whisker, fast shaping element on photo-hardening shaping device, the composite material miscible liquid is controlled by ultraviolet light source, focusing lens focusing lens and computer program in electrode tank of X-Y-Z working bench. The invention provides a fast method for preparing injecting mold, flake grinder, ultra-thin element and accessory in special shape.

A gypsum light mortar is a heat-insulating material of the inner wall of the building, the gypsum powder is taken as the gelled material which comprises light weight aggregate, polymeric additive and retarder, the light weight aggregate comprises expanded perlite, the polymeric additive is the combination of cellulose ether, lignocellulose, starch ether and polyvinyl alcohol, wherein, the expanded perlite is a silicon-processing modified expanded perlite. The mortar of the invention has the following advantages: the heat conducting coefficient of the mortar of the invention is greatly reduced, and the mortar has excellent heat preserving and insulating property, greatly-increased strength index comparing with the conventional heat-insulating mortar, excellent compression strength, securing the safety using, light weight, effectively reducing the sole weight of the building and the burden of the base load, same construction technique with the conventional coating mortar, simple operation; stable physical property, no hollow injection or cracking after construction, low activity, broad application field, and excellent compatibility and sticking force to various wall bases, the product of the invention in nontoxic, smell-less, inorganic and non-combustible.

An external wall insulation system of a lightweight screed inside and outside combination is formed by smearing plaster lightweight screed and cement lightweight screed on the external wall of a building; wherein, the inner side of the external wall is coated with the plaster lightweight screed and the outer side of the external wall is coated with the cement lightweight screed, and both the plaster lightweight screed and the cement lightweight screed comprise lightweight aggregate which contains organosilicone modified expanded perlite. The external wall insulation system has the advantages that: aiming at the different requirements of the inner side and the outer side of the external wall of the building, the inner side of the external wall adopts the plaster lightweight screed and the outer side adopts the cement lightweight screed so as to form the novel insulation structure, thus exerting the function of the two insulation sand pulps and being beneficial to humidity control and fire prevention in the building; the external wall insulation system has the advantages of low coefficient of heat conductivity, excellent intensity index of each item, ensuing safe use, effectively reducing the deadweight of the building and the burden of basis load, extremely simple construction technique, stable physical property, existing no hollowing and crazing after construction, extremely low radioactivity, ensuring the inhabited environment to be healthy and safe as well as wide application scope.

Provided graphene electric-conduction concrete comprises silicate cement and sand, and is characterized in that the graphene electric-conduction concrete is formed by adding graphene as an electric conduction phase, and the compositions comprise, relative to the total mass of cement and sand, 0.05-3 parts of graphene, 0.5-6 parts of a graphene dispersant, and 0-0.75 part of a water reducer for concrete. The graphene electric-conduction concrete possesses characteristics of good electric conductivity, high mechanical strength, stable electrical resistivity and good durability, and is applicable to electric heating ground surfaces, floors, and snow and ice thawing and the like.

The invention relates to a holographic optical antenna device which comprises a light ray propagation base, at least one coupling grating and at least one channel grating are recorded on the base, wherein the coupling grating is an input grating and used for leading a space optical with a certain aperture angle coupling to enter into the base, transforming optical waves with different wavelengths in a finite aperture to plane waves with a certain tilted phase, carrying out full-reflection propagation in the base, and carrying out a certain spectrum separation on incident optical waves with the different wavelengths. At least one channel grating can lead the plane waves which are incident on the channel grating to couple and emerge, and further lead the waves to enter into a follow-up photoelectric conversion and signal processing circuit, thereby obtaining information carried in input light and realizing the functions of the antenna. The optical antenna has the advantages of low manufacturing cost and small installation and adjustment difficulty, does not depend on a lens system and can simultaneously meet the requirements on ultra-thin size and large aperture.

The heat insulating foamed polystyrene particle mortar used in building engineering consists of portland cement 40-45 wt%, flyash 3-6 wt%, fine silica powder 0-3 wt%, foamed polystyrene particle 1.3-2.8 wt%, polypropylene fiber 0.1-0.2 wt%, quartzite 42-47 wt% and water-thinned silane / siloxane emulsion 5-8 wt%. The present invention has light bulk weight, dry density 300-480 kg / cu m; good heat insulating and sound isolating performance, and heat conducting coefficient 0.07-0.13 W / m.k. The present invention utilizes partial flyash to replace cement and the product has no environment pollution.

The invention relates to shoe soles and provides an antiskid rubber outsole which is specially used on surfaces containing surfactants and oil stains and a manufacturing process of the outsole. The antiskid rubber outsole is prepared from nitrile butadiene rubber, integrated rubber, solution polymerized styrene-butadiene rubber, modified liquid polybutadiene rubber, fumed silica, a plasticizer, an anti-aging agent, petroleum resin, a white smoke activator, a silane coupling agent, polyethylene wax, zinc oxide, sulfur, and a vulcanization accelerator. The antiskid rubber outsole has excellent antiskid effect not only on a regular dry or wet surface or a surface containing surfactants, for example, detergents, and an oil stain surface. People can walk safely and stably on the outsoles. The manufacturing process has simple processes and is easy to carry out, and is suitable for large-scale production.

The invention provides an archaistic building and a manufacturing method thereof, relating to the technical field of manufacturing of historic buildings. The archaistic building comprises a ground foundation, a main body steel structure, archaistic upright pillars and archaistic joint tiles, wherein the archaistic joint tiles and the archaistic upright pillars are made of modified cement and are factory prefabricates with lifelike forms and excellent assembling and archaistic effects. Besides, the steps of the manufacturing method are simple, and the manufactured archaistic joint tiles are scientific in physical dimension design and reasonably butted and have the advantages that water seepage and rain leakage are avoided, the texture is real, the durability is good, and the appearance and the proportion are accordant with traditional tiles. According to the manufacturing method, the technical problems of long construction cycle and short service life in the prior art are solved, the construction of the archaistic building is relatively reasonable, and the application of the archaistic building is relatively wide.

The invention discloses a pre-metering roll type coating device. The coating device comprises a coating roll, a liquid supply system and a coating sheet path control system, wherein the coating roll has surface finish; the liquid supply system continuously supplies coating liquid to a slit die head by using a precision metering pump; and the coating sheet path control system is used for adjusting a wrap angle beta between a base material and the coating roll and consists of two rolls with adjustable horizontal and vertical positions, wherein a liquid supply clearance d is reserved between a lip mouth end face A of the slit die head and the coating roll, the numerical value of the liquid supply clearance d is between 0.01 and 0.1 millimeter, and the wrap angle beta between the base material and the coating roll is between 0 and 30 degrees. The coating device is mainly applied to coating and processing of a continuous flexible sheet material surface coating such as various optical films for LDC and PDP displays and conductive films in the field of solar cells and the like, and can realize precise controllability of the coating thickness; and the coating has good thickness uniformity and smooth surface.

The present invention relates to nanometer material technology, and is especially covalent bond formed nanometer luminescent zinc oxide-polymer particle in core-shell structure and its preparation process. The nanometer particle has nanometer size ZnO monocrystal as core and thin nanometer size polymer layer as shell and these two components are connected via covalent bond with high stability. The material as one new type of compound has fixed smelting point, dissolubility, conductivity, viscosity, etc. It has the type, composition and size of both core and shell capable of being controlled via chemical reaction, and thus controllable physical performance. What is more important is that the material as new type of luminescent material has light emitting wavelength, strength, quantum efficiency and other parameters capable of being altered via chemical preparation.