51results about How to "Efficient adhesion" patented technology

The invention discloses an iron-containing organic metallurgical pellet binder and a preparation method thereof. The iron-containing organic metallurgical pellet binder comprises the following components in percentage by weight: 1-3% of polyacrylamide, 30-40% of sodium humate, 6-10% of borax, 8-15% of sodium nitrate, and 30-60% of iron ore powder, wherein the components are mixed, dried, grinded and then prepared into the finished product. The iron-containing organic metallurgical pellet binder disclosed by the invention is a pure organic matter binder, and has the characteristics of efficient binding force, low proportion, high burning loss and low residue; and by using the iron-containing organic metallurgical pellet binder disclosed by the invention for replacing common bentonite, the iron grade of pellet ores can be effectively increased, and the replacement is of great significance to realization of production increasing and coke saving of a blast furnace, energy conservation and emission reduction, reasonable utilization of iron ore resources, and improvement of overall economic benefits and social benefits of iron and steel enterprises.

The invention relates to the field of microecological feed additives, and particularly relates to preparation and application of a composite microecological feed additive. The composite microecological feed additive provided by the invention is prepared from screened active compound probiotics. Diarrhea caused by domestic animal bacterial infections can be prevented and treated. Two probiotics used by the composite microecological feed additive have the abilities of inhibiting infection of common gastrointestinal pathogens of animals, including shigella dysenteriae, pathogenic escherichia coli and salmonella enteritidis, and also can reduce the toxicity caused by dysentery bacillus infection Caco-2 cells and inhibit adhesion of the shigella dysenteriae to the Caco-2 cells. Finally, the obvious effects of stimulating the animal immunity, improving the gastrointestinal digestion abilities of animals, and promoting animal growth are achieved. A production technology of a strain adopts a liquid fermental cultivation technology and a low-temperature freeze drying technology, so that the obtained inoculant is high in survival rate and purity. The composite microecological feed additive is a green environment-friendly feed additive.

The invention discloses a construction method for the wall surface of a bedroom, which comprises the following steps: 1) removing the original cement layer on the wall surface, then inspecting the wall surface, and filling the hole in the wall surface with cement mortar; 2) Use 3-5 parts of sand, 9-12 parts of latex powder, 7-9 parts of black cement, and 5-10 parts of water to mix evenly to make cement slurry, and the prepared cement slurry is uniform Apply to bedroom walls. The invention realizes the construction of the wall surface of the bedroom, thereby ensuring the reinforcement of the bedroom wall surface, avoiding the situation that the wall surface falls off and bulges, thereby ensuring the long-term use of the bedroom wall surface, and improving the living comfort of the residents Suspend the water-absorbent cotton cloth on the white cement layer by absorbing water, so as to moisturize the white cement layer, thereby avoiding cracks during the drying process, and at the same time ensuring uniform wetting of the white cement layer, and being able to Save water resources and reduce workload.

The invention relates to the technical field of the high-performance coating material, and especially relates to a coating composition for a bright-enhancement composite film laminating layer. For improving the binding force between a diffusion layer and a bright-enhancement layer in the existing diffused bright-enhancement composite film, the invention provides a coating composition for the bright-enhancement composite film laminating layer and a diffused bright-enhancement composite film. The coating composition comprises resin and photoinitiator; the resin comprises 50%-80% of acrylate oligomer and 20%-50% of allyl benzoxazine monomer, and the percent is weight percent; the adding amount of the photoinitiator is 0.5%-3% of the total weight of the resin. The coating composition providedby the invention can form a laminating layer between a prism structure top end of the composite film and the diffusion layer substrate, and has good binding effect; the optical property of the diffused bright-enhancement composite film can be greatly improved under the condition of maintaining the enough release force.

The invention discloses a compression-resisting and fireproof plate and a preparation method thereof and relates to the technical field of fireproof plates. The compression-resisting and fireproof plate is prepared from raw materials according to the following parts: 95 to 105 parts of modified magnesium oxysulfate cement slurry, 30 to 35 parts of modified fibers, 20 to 30 parts of desulfurizationgypsum, 15 to 20 parts of modified diatomite, 15 to 20 parts of silica sol, 5 to 10 parts of polyacrylamide, 15 to 20 parts of auxiliary agent and 30 to 35 parts of water. The compression-resisting and fireproof plate disclosed by the invention has good mechanical properties and compression resistance.

The invention relates to the field of concrete structure protection, mainly nano-modified silane and siloxane water-repellent for concrete surface waterproof and anti-corrosion protection and a preparation method thereof. The method is as follows: step 1, dissolving graphene in small molecule alcohols and ester solvents, and dispersing by ultrasonic waves for 30-60 minutes to form a uniformly dispersed graphene dispersion; step 2, dissolving isooctyltriethoxysilane Mix with isobutyltriethoxysilane and ester small molecule solvent according to a certain ratio, and mix them uniformly by mechanical stirring for 15-45 minutes to obtain a silicone dispersion; step 3, mix the graphene dispersion and silicone dispersion according to 1: The ratio of 3~1:10 can be uniformly dispersed under the condition of mechanical stirring to obtain nano-modified silane and siloxane waterproofing agent.

The invention discloses a preparation method of an immobilized enzyme used for synthesizing gamma-L-glutamyl-L-cysteine, belonging to the technical field of biosynthesis. According to the invention, full contact between gamma-glutamyl transpeptidase and raw materials including L-glutamine and S-benzyl-L-cysteine is promoted in virtue of preparation of the immobilized enzyme, so effective exertionof catalytic activity is ensured. A synthesis method of gamma-L-glutamyl-L-cysteine has the advantages of usage of easily available raw materials, mild reaction conditions, simple and convenient reaction and post-treatment operation, high product yield and purity and low cost, and is suitable for industrial production.

The invention relates to the technical fields of the petroleum industry and environmental protection, in particular to an oil gelling agent and a preparation method thereof. With biodegradable erythritol and vinyl laurate as a substrate, the novel oil gelling agent is prepared through biocatalysis. The oil gelling agent has the advantages of degradability, no secondary pollution, high oil gelling speed and low price, thereby achieving marine oil spill recovery and reducing hazards caused by pollution.

The invention discloses iridescent pearlescent leather and a preparation method thereof, and belongs to the technical field of leathers. The iridescent pearlescent leather comprises a leather materialand a coating, and the coating comprises the following parts by the following mass percentage: 7-10% of a first coating, 12-15% of a second coating, and 12-15% of a third coating, wherein, the thirdcoating, the second coating and the first coating are coated onto the leather in sequence. The preparation method of the iridescent pearlescent leather includes the following steps of coating materialpreparation, coating material coating and drying. The surface of the obtained iridescent pearlescent leather has the reflective effect, the tensile strength reaches 31MPa in the horizontal directionand 33 MPa in the longitudinal direction, the friction fading reaches 4 levels, the friction resistance is high, and the yellowing resistance is high.

The invention provides a device for modifying the hydrophobic property of MOFs through positive and negative micropressure conversion, and a preparation method and application of the hydrophobic MOFs, and belongs to the technical field of adsorption catalyst preparation. Based on the device, positive and negative micro-pressure conversion is adopted, and positive pressure promotes a hydrophobic modifier to enter a microporous structure of the MOFs material, so that a hydrophobic layer is attached more uniformly; and after modification is finished, the residual hydrophobic modifier is promoted by negative pressure to rapidly escape from the MOFs material, so that the microporous structure of the MOFs is prevented from being blocked by the hydrophobic modifier, the specific surface area and porosity of the MOFs, which are similar to those of the MOFs before hydrophobic modification, are kept as far as possible, and the practical application value of the MOFs material is improved.

The invention discloses CT-visible mucous-adherence-type bifunctional microcapsules as well as a preparation method and application thereof. The preparation method of the CT-visible mucous-adherence-type bifunctional microcapsules comprises the following steps: preparing catecholated chitosan modified with catechol by utilizing a chemical grafting method; preparing alginate microspheres containingbarium sulfate by utilizing low-concentration alginic acid and a sodium sulphate solution as spray fluid as well as a barium chloride solution as receptor fluid by adopting an one-step electrostaticspray method; performing multi-layer surface coating on the alginate microspheres by utilizing the catecholated chitosan so as to obtain a chitosan / alginate microcapsule complex; and then, mixing the chitosan / alginate microcapsule complex with a trisodium citrate solution so as to obtain microcapsules. The microcapsules prepared by the preparation method have excellent mucous adherence characteristics and CT angiography properties; moreover, the microcapsules are also applicable in oral drug preparations, oral nutrient preparations and oral probiotics.

The invention discloses a device and method for enrichment and separation of nitrifying bacteria. The device includes a nitrification treatment tank, a partition plate is arranged in the nitrification treatment tank and divides the nitrification treatment tank into an enrichment tank and a separation tank. An aeration device is arranged at the bottom of the enrichment tank, a membrane module is arranged above the aeration device, the enrichment tank is internally filled with two fillers, the specific gravity of the first filler is 0.95-0.98 g / L, the particle size is 3-5 cm, the specific gravity of the second filler is 1-2.2 g / L, and the particle size is 0.15-0.3 mm. A filter screen for separating the first filler and the second filler is arranged at the lower portion of the separation tank, a first filler collecting port and a water draining port are formed above the filter screen, and a second filler collecting port is formed below the filter screen. A water draining sluice is arranged on the partition plate and located above the filter screen. The device can simultaneously achieve enrichment and separation of nitrifying bacteria and is high in nitrifying bacterium enrichment purity and large in enrichment amount.

The invention discloses a device for preparing a nanofiber membrane. The device comprises a device body; the device body comprises a base, a first fixed rod, a second fixed rod,fixed shafts, a membrane collecting roller, a driving wheel, a sliding rail, a motor frame and a motor; the base is located at the bottom of the device body; the sliding rail is located at the top of the base; the first fixed rod and the second fixed rod are installed at the two ends of the top of the sliding rail; the fixed shafts are installed on the inner sides of the first fixed rod and the second fixed rod; the membrane collecting roller is installed at the front ends of the fixed shafts; the driving wheel is installed at the left end of the first fixed rod; the motor frame is located at the left end of the base; the motor is installed at the top of the motor frame; and the motor is fixedly connected with the driving wheel through a belt. According to the device, nanofiber can be automatically collected, and the nanofiber can be collected by replacing membrane collecting rollers with different lengths, so that the device is convenient for workers to use.

The invention relates to a mannosylated chitosan delivery system assembled tuberculosis mucosa gene vaccine. The mannosylated chitosan delivery system assembled tuberculosis mucosa gene vaccine is a nanoparticle complex compounded through copolymerization and crosslinking of mannosylated chitosan and a tuberculosis antigen encoding plasmid pPES; the tuberculosis antigen encoding plasmid pPES is amulti-T cell epitope tuberculosis gene vaccine with heat shock protein 65 as an epitope scaffold, which is disclosed in the invention with the application number of 201310682146.4. The invention further discloses a preparation method of the mannosylated chitosan delivery system assembled tuberculosis mucosa gene vaccine. The preparation method comprises the following steps: preparing a mannosylated chitosan solution with the concentration of 0.015-0.025% and the pH of 5.2-5.5; dissolving the tuberculosis antigen encoding plasmid pPES into a buffer solution to obtain a tuberculosis antigen encoding plasmid solution with the concentration of 800 [mu]g / ml-1 mg / ml; and mixing the mannosylated chitosan solution and the tuberculosis antigen encoding plasmid solution at 54-57 DEG C at a high speed of 15000-17000 rpm, and performing a copolymerization and chemical crosslinking reaction. The invention further discloses application of the mannosylated chitosan delivery system assembled tuberculosis mucosa gene vaccine to preparation of medicines for preventing or treating tuberculosis. The tuberculosis mucosa gene vaccine has the potential as a novel preventive and therapeutic tuberculosis vaccine.

The invention relates to the technical field of exploitation of southern ion type rare earth ores, in particular to a southern ion type rare earth ore Luoyang shovel. The invention aims to solve the problem that defects exist in application of a Luoyang shovel in southern ion type rare earth ores. According to the technical points, the southern ion type rare earth ore Luoyang shovel comprises a shovel rod, a shovel barrel, a plurality of shovel barrel tongue-shaped front edges, shovel barrel toothed chutes and an annular oblique ring beam, wherein the shovel barrel comprises a shovel barrel body, and is of a cylinder structure of which the opening direction of the barrel body faces away from the shovel rod; the shovel barrel tongue-shaped front edges are arranged along the shovel barrel body and correspond to the edge of the opening of the barrel body, and each shovel barrel tongue-shaped front edge is provided with a tongue-shaped protrusion of which the tip faces away from the shovelrod; the shovel barrel toothed chutes surround the peripheral wall of the shovel barrel body, and toothed openings face one sides of the shovel barrel tongue-shaped front edges; and the annular oblique ring beam surrounds the peripheral wall of the shovel barrel body, is located at the position where the shovel barrel body is connected with the shovel barrel toothed chutes, and is located on theside facing the toothed openings. The southern ion type rare earth ore Luoyang shovel is simple in integral structure, convenient to operate and high in construction efficiency, is suitable for exploration and exploitation of southern ion type rare earth ores, and is worthy of being popularized and used.

The invention discloses an iridescent pearlescent leather and a preparation method thereof, belonging to the technical field of leather. The iridescent pearlescent leather of the present invention comprises leather and a coating, and the coating comprises the following components in terms of the mass percentage of the leather: 7-10% of the first coating, 12-15% of the second coating and 12-15% of the third coating 12-15% of the layer, wherein, the third coating, the second coating and the first coating are sequentially coated on the leather. The preparation method of the iridescent pearlescent leather includes the following steps: preparing the coating Material, coating coating material and drying, the surface of the obtained iridescent pearlescent leather has a reflective effect, the tensile strength is as high as 31 MPa in the transverse direction, 33 MPa in the longitudinal direction, and the friction fading reaches level 4. It has strong friction resistance and yellowing resistance. powerful.