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184results about How to "Hinder entry" patented technology

Thermoplastic low-smoke halogen-free flame-retardant environment-friendly sheath material for power cables and preparation method thereof

The invention discloses a thermoplastic low-smoke halogen-free flame-retardant environment-friendly sheath material for power cables and a preparation method thereof. The thermoplastic low-smoke halogen-free flame-retardant environment-friendly sheath material for power cables comprises the following components in parts by weight: 60-80 parts of EVA (ethylene-vinyl acetate), 20-30 parts of HDPE (high-density polyethylene), 10-15 parts of EPDM (ethylene-propylene-diene monomer), 15-25 parts of compatiblizing agent, 100-150 parts of halogen-free flame retardant, 0.5-1 part of antioxidant 1035, 0.5-1 part of antioxidant DSTP, 1-2 parts of ethylene bis stearamide, 3-5 parts of DCP (dicumyl peroxide), 2-4 parts of zinc oxide, 1-2 parts of calcium stearate, 10-20 parts of dimethyl methyl phosphonate, 30-40 parts of nano kaolin, 2-3 parts of stearic acid and 0.5-1 part of isopropyl tri(dioctylpyrophosphate)titanate. The sheath material disclosed by the invention has the advantages of excellent physical and mechanical properties, excellent flame retardancy, favorable high/low temperature resistance, favorable oil resistance, favorable solvent resistance, favorable wear resistance, favorable ozone resistance, favorable aging resistance, high flexibility, crack resistance and the like, is very durable, environment-friendly and pollution-free, and can completely satisfy the requirements for modern power cables.
Owner:ANHUI HUAJIN CABLE GROUP

Paddy rice dedicated cadmium-reducing biological organic fertilizer and preparation method thereof

The invention discloses a paddy rice dedicated cadmium-reducing biological organic fertilizer and a preparation method thereof, and relates to the technical field of agricultural fertilizer; the paddy rice dedicated cadmium-reducing biological organic fertilizer is prepared by mixing granulation of 1-3 parts by weight of urea, 2-6 parts by weight of diammonium phosphate, 1-3 parts by weight of potassium sulfate, 0.5-1.5 parts by weight of a trace element, 30-50 parts by weight of livestock and poultry manure, 20-40 parts by weight of agricultural crop straw, 10-30 parts by weight of humic acid, and 0.5-1.5 parts by weight of biological bacteria. The paddy rice dedicated cadmium-reducing biological organic fertilizer is applied, aims at paddy rice fertilizer-requiring characteristics, has strong specificity and high fertilizer efficiency, and can effectively reduce the cadmium absorption of paddy rice; the paddy rice yield can be increased by 5-10%, and the quality of produced rice can meet requirements of green food. The paddy rice dedicated cadmium-reducing biological organic fertilizer is mainly used for paddy rice, and also can be used for soybean, corn, fruit trees, vegetables and other crops. When application, the paddy rice dedicated cadmium-reducing biological organic fertilizer is mainly used as a base fertilizer for furrow application, and also can be used as a topdressing fertilizer for broadcasting application.
Owner:HUNAN ZHONGKE AGRI

Multifunctional bio-organic fertilizer and preparation method thereof

The invention discloses a multifunctional bio-organic fertilizer and a preparation method thereof, and relates to the technical field of agricultural fertilizers. The multifunctional bio-organic fertilizer is prepared from the following raw materials in parts by weight: 40-60 parts of forestry and agricultural residues, 10-16 parts of active humic acid, 5-15 parts of degreased tea-seed pancake, 0.5-1.5 parts of expanded vermiculite, 0.2-0.8 part of abscisic acid, 0.2-0.8 part of zymophyte, 0.2-0.8 part of beneficial bacterium, 0.2-0.8 part of degrading bacteria, 5-9 parts of urea, 8-12 parts of calcium magnesium phosphate fertilizer, 4-8 parts of potassium sulfate, and 0.5-1.5 parts of medium and trace element. The multifunctional bio-organic fertilizer has the characteristics that the nutritional elements for plant growing are contained; the organic substances are rich; in addition, the contaminated oil can be remediated; the soil structure can be activated; the multifunctional bio-organic fertilizer is applicable to the planting of crops such as rice of southern China, vegetables, watermelon, tobacco, fresh ginger, rape and tea, fruits such as naval orange, grapefruit and pear, garden nursery stock and flowers.
Owner:HUNAN ZHONGKE AGRI

Overhead line coiling and uncoiling device of charge connecting line

The invention provides an overhead line coiling and uncoiling device of a charge connecting line, and belongs to the field of a charge gun connecting line protection device. The device comprises a charging pile, wherein the charging pile is arranged on the bottom surface of a ceiling of a charging station; the bottom surface of the ceiling of the charging station is provided with connecting rods; the connecting rods are positioned on the two sides of the charging pile; transverse tracks are connected with the ceiling of the charging station by the connecting rods; certain ends of the transverse tracks are provided with a line outlet; the transverse tracks are provided with a line inlet corresponding to the position of the charging pile; a slide block is arranged on the transverse tracks; the charge gun connecting line leads in from the line inlet, bypasses the slide block and gets out from the line outlet; a spring is arranged between the slide block and the end face at one end of the transverse track, so the charge gun connecting line does not trail on the ground, the service life of the charge gun connecting line is prolonged, the charge gun connecting line is not stepped on or crushed by an electric vehicle, and insulating skin is prevented from being damaged to prevent unexpected situations.
Owner:张远镇 +2

Improved type porous granular ammonium nitrate fuel oil explosive and preparing method thereof

The invention discloses an improved type porous granular ammonium nitrate fuel oil explosive and a preparing method thereof. The improved type porous granular ammonium nitrate fuel oil explosive is prepared by mixing the following three raw materials in percentage by weight: 93%-95% of porous granular ammonium nitrate, 2.5%-5.0% of light diesel oil and 1.5%-4.0% of bamboo charcoal powder. The preparing method comprises the following steps of adding the porous granular ammonium nitrate to a dispersator according to quantity, then slowly adding sufficient light diesel oil, sufficiently stirring for 5 minutes, and then stopping stirring; standing for 5 minutes, starting the dispersator again, slowly adding the residual bamboo charcoal powder, continuously stirring till color and luster are uniform, wherein the black bamboo charcoal powder is uniformly absorbed on the surface of the porous granular ammonium nitrate; finally filling and sealing to obtain the finished improved type porous granular ammonium nitrate fuel oil explosive product which has the advantages of uniform stirring, excellent property, low moisture absorption and agglomeration ratio, stability in storage, safety, environmental protection, energy conservation, low consumption and low cost.
Owner:ZHEJIANG ZHENKAI CHEM IND +1

High-temperature-resistant filtering material with ultra-clean filtering and low-temperature catalytic denitration functions, and preparation method thereof

The invention discloses a high-temperature-resistant filtering material with ultra-clean filtering and low-temperature catalytic denitration functions, and a preparation method thereof. The filtering material successively comprises, from a dust-facing surface, an island-type or fragment-type extremely superfine fiber layer, a superfine fiber layer, a PTFE sewing-thread base-cloth layer, a fine-denier fiber layer, a high-temperature-resistant adhesive layer and a catalyst coating. The high-temperature-resistant filtering material provided by the invention has the excellent characteristics of a large specific surface area, high porosity and the like, can realize ultralow dust discharge and has superhigh filtration accuracy and good filtering effect; a catalyst is uniform in distribution, firm in loading, high in catalysis efficiency, good in anti-sulfur effect and long in service life; the preparation method for the filtering material is simple in process and easy for realization of industrialization; the catalyst is not prone to poisoning and long in service life; and the high-temperature-resistant filtering material is applicable to flue gas filtering under complex conditions like high working temperature, great dust content and high requirements on filtration accuracy, and can realize low-temperature denitration of nitrogen oxides in flue gas without extra heating while realizing high-precision filtering.
Owner:XIAMEN ZHONGCHUANG ENVIRONMENTAL TECH CO LTD

Preparation method for modified magnesium-aluminium hydrotalcite cable fillers

The invention discloses a preparation method for modified magnesium-aluminium hydrotalcite cable fillers and belongs to the technical field of preparation of cable fillers. The preparation method disclosed by the invention has the beneficial effects that firstly a tetraethoxysilane hydrolysis method is utilized for preparing silica sol, and since the silica sol contains silicon dioxide, oxygen inthe air can be effectively isolated from a base material to prevent contact; in addition, bismaleimide resin has heat resistance, and is easily cured on the polyethylene surface to form a triazine-ring structure, so that the compatibility of self-made magnesium-aluminium hydrotalcite with the base material is improved; meanwhile, the self-made magnesium-aluminium hydrotalcite particles are uniformly dispersed on the surface of the base material, so that the surface temperature of the base material is reduced and the flame-retardant effect is achieved; furthermore, in the heat-absorbing and decomposing process of the self-made magnesium-aluminium hydrotalcite, an alkali porous composite oxide is obtained, and can be combined with a carbonized product on the surface of the base material to form a protective film, so that the invasion of heat and oxygen can be effectively prevented, the flame retardance of the cable fillers can be further improved and the application prospect is wide.
Owner:谢新昇

Anti-corrosion technology of steel structure

The invention provides an anti-corrosion technology of a steel structure. The steel structure used under a severe environment cannot be well protected through a single anti-corrosion method; accordingto the anti-corrosion technology provided by the invention, multi-layer anti-corrosion layers are provided for the steel structure through relatively simple technological steps, so that the corrosionresistance which is better than that in the prior art is provided for the steel structure. The anti-corrosion technology is characterized in that surface pretreatment is firstly carried out on the steel structure on which anti-corrosion treatment is to be carried out, then a thin metal layer is plated on the metal surface of the steel structure on which the anti-corrosion treatment is to be carried out by using an electroplating or hot dip method so as to form a first anti-corrosion layer, attention must be paid to control the thickness and the roughness of the first anti-corrosion layer during an electroplating or hot dip process, a nano anti-corrosion coating material which is prepared from the following ingredients of silicate, organic acid, zinc butyl octyl dithiophosphate and thiourea component is sprayed on the surface of the first anti-corrosion layer, a second anti-corrosion layer is formed through reaction between the first anti-corrosion layer formed through electroplating or hot dip and the ingredients in the nano anti-corrosion coating material, and a third anti-corrosion coating layer is formed by continuously spraying the nano anti-corrosion coating material in appropriate thickness. Through the technological process, the corrosion resistance of the steel structure is increased.
Owner:中冶建安集团有限公司

Composite flame retardant formula for inhibiting asphalt combustion process and preparation method of composite flame retardant formula

ActiveCN106336675AImprove thermal stabilityHeat absorption and release decreaseBuilding insulationsFire hazardDecomposition
The invention aims to provide a composite flame retardant formula for inhibiting the asphalt combustion process and a preparation method of the composite flame retardant formula, and aims to solve the problems that a conventional asphalt flame retardant is poor in flame retardancy effect and high-efficiency flame retardancy cannot be achieved in the whole combustion process of asphalt. The preparation method comprises the following steps: firstly, testing four components of the asphalt so as to obtain the contents of the components; based on the characteristic that combustion decomposition temperature intervals of the components of the asphalt are in gradient distribution, preferring environment-friendly inorganic flame retardants matched with the components; performing surface modification on the preferred flame retardants, and confirming addition amounts and addition methods of the flame retardants; finally, according to thermogravimetry testing results, optimizing the adulteration amount of the flame retardants or the compounded flame retardants, and compounding the flame retardants according to the contents of the components of the asphalt, thereby obtaining the composite flame retardant formula for inhibiting the combustion behaviors of the asphalt at multiple stages. By adopting the preparation method provided by the invention, high-efficiency flame retardancy on the whole combustion process of the asphalt can be achieved, and the fire hazard security of asphalt pavements can be improved.
Owner:NANJING FORESTRY UNIV

PEEK composite biological implant material loaded with BMP-2 gene slow-release coating and preparation method of PEEK composite biological implant material

The invention discloses a PEEK composite biological implant material loaded with a BMP-2 gene slow-release coating and a preparation method of the PEEK composite biological implant material, and belongs to the technical field of biomedical materials. The preparation method comprises the following steps: preparing PLGA-NH2 sustained-release microspheres loaded with the BMP-2 gene by utilizing a multiple emulsion solvent evaporation method; meanwhile, preparing PEEK with nano topological morphology and a nitrogen-containing functional group by adopting a nitrogen low-temperature plasma radiation technology, constructing a PDA bionic coating on the surface of the PEEK by virtue of the'wet bonding characteristic 'of PDA, and PDA is used as a secondary reaction platform to graft PLGA-NH2 sustained-release microspheres loaded with the BMP-2 gene, so that a controlled-release gene sustained-release system is constructed on the surface of the PEEK and the composite biological implant material disclosed by the invention is obtained. The PLGA microspheres are introduced as a sustained-release coating, so that the effective release time of bone growth factors is prolonged, the effective release time is matched with the key period of bone defect healing, a stable and long-term bone formation process is realized, and the drug loading rate and the entrapment rate are relatively high.
Owner:JILIN UNIV

Medical ozone disinfection cabinet device of magnetic electrostatic adsorption

The invention discloses a medical ozone disinfection cabinet device of magnetic electrostatic adsorption. A structure of the medical ozone disinfection cabinet device comprises a starter, an ozone generator, glove placing devices, a positioning block, and a disinfection cabinet body. The starter is electrically connected with the ozone generator. There are multiple glove placing devices and the multiple glove placing devices are installed in the disinfection cabinet body in equal distance. The medical ozone disinfection cabinet device is capable of, under the action of a glove fixing device, adsorbing a glove fixer body through a magnet and avoiding a glove from falling, opening a glove opening through moving a glove clamping block and enabling ozone to enter the interior of the glove better. The medical ozone disinfection cabinet device is capable of, under the action of a finger support device, forming an electric current through an extrusion dielectric substance, electrifying an electrostatic adsorption plate, thereby adsorbing glove fingers to be opened, avoiding the fingers from being bended so as to hinder entrance of the ozone, and through an arc-shaped structure of an airflow guide plate, achieving the airflow guiding effect better, enabling an airflow to be blown to the electrostatic plate, and through a turbulent flow bulge, performing flow turbulence on the airflow and increasing contact time of the ozone and finger parts.
Owner:黑龙江日田生物科技有限公司

Method of preparing conductive anti-corrosion copper coating on aluminum alloy

The invention provides a method of preparing a conductive anti-corrosion copper coating on aluminum alloy. The aluminum alloy is not subjected to zinc immersion or nickel plating treatment before thecopper alloy is plated with copper; the method specifically comprises the following steps that the surface of the aluminum alloy is polished until the roughness of the surface of the aluminum alloy ranges from 0.03 to 0.15 micron; chemical oil removing is carried out on the aluminum alloy by adopting a chemical solution; alkali washing is carried out on the aluminum alloy by adopting an alkaline solution; acid washing is carried out on the aluminum alloy by adopting an acidic solution; and the aluminum alloy is put into a plating solution for electroplating to obtain a copper coating; the plating solution comprises the following components of 50-70 g/L of sulfuric acid, 180-250 g/L of copper sulfate, 60-80 ppm of Cl<->, 0.01-0.1 g/L of a leveling agent, 0.01-0.06 g/L of a wetting agent, and 0.02-0.08 g/L of a brightener. According to the method, complex steps such as the zinc immersion or the nickel plating intermediate layer are omitted, a copper layer is directly electroplated on thesurface of the aluminum alloy, and the obtained coating has good bonding and corrosion resistance in a combination mode.
Owner:CHANGAN UNIV

Efficient waterproof dustproof fiber cement board

The invention discloses an efficient waterproof dustproof fiber cement board, and belongs to the technical field of building materials. According to the invention, bamboo shoots are crushed and mixedwith alkali liquor, so that the space between fiber components can be filled with tiny calcium carbonate components, and the formed mixture is mixed with citric acid liquid for hydrolysis. A micelle solution is prepared by polymerizing monomers such as N-dodecylacrylamide, the internal stability is improved, and through combination with the components of a composite hydrophobic dustproof base material, the water resistance of the formed fiber cement board is improved and the fiber cement board is not easily contaminated by dust. Bamboo shoots are treated, filling of multiple inorganic macromolecular components is combined, fibers and inorganic macromolecules are subjected to net capture by utilizing hydrophilic and hydrophobic effects shown by a carbon nanotube network at different temperatures, the waterproof property is improved, the dustproof property is also provided, and a prepared amphiphilic binary copolymer has the effect of supplementing and improving the waterproof property and the dustproof property from the aspect of an internal structure. The fiber cement board solves the problems that a common fiber cement board at present is poor in waterproofness and prone to beingcontaminated by dust.
Owner:佛山市世为创意家具有限公司

Waterproof acrylic acid adhesive tape and preparation method thereof

The invention discloses a waterproof acrylic acid adhesive tape and a preparation method thereof. The waterproof acrylic acid adhesive tape comprises a substrate layer, waterproof acrylic acid adhesive is applied to the substrate layer to form an adhesive layer, and the other surface of the adhesive layer is adhered to a release material layer. The waterproof acrylic acid adhesive tape is prepared from components A in parts by weight, and the components A comprises paraffin, a silane coupling agent, methyl ethyl ketone, isocyanate, methyl methacrylate, ethyl acrylate and dimethyldiethoxylsilane. Due to the formation of a network structure, the distance among latex particles can be shortened greatly, the gaps among latex particles can be narrowed, water molecules can be hereby prevented from entering the acrylic acid adhesive, and the purposes of improving the cohesion and the water resistance of an adhesive film can be achieved. In addition, because paraffin is mixed into a solution by stirring, and paraffin molecules fill in the gaps among latex particles, water molecules can be prevented from entering the acrylic acid adhesive. Moreover, paraffin can form a waterproof protective film on the surface, thus water is prevented from entering the acrylic acid adhesive.
Owner:SUZHOU SIDIKE NEW MATERIALS SCI & TECH

Novel water drain pipe device

The invention discloses a novel water drain pipe device, and relates to the technical field of water drain pipes. The novel water drain pipe device comprises a U-shaped pipe, and is characterized in that the left side of the U-shaped pipe is communicated with a water outlet pipe; one end, away from the water outlet pipe, of the U-shaped pipe is communicated with a water inlet pipe; one end, near the exterior, of each of the water outlet pipe and the water inlet pipe is respectively communicated with a flange sleeve pipe; rubber sealing rings are respectively arranged at both ends of each flange sleeve pipe; the lowest point at the inner wall of the water outlet pipe is higher than the highest point at the inner wall of the lowest part of the U-shaped pipe, and the higher part is equal to 1.5 times of the inner diameter of the U-shaped pipe; the lowest point of the water inlet pipe is higher than the lowest point of the water outlet pipe. The novel water drain pipe device has the advantages that the blockage of a pipeline due to silt settlement is greatly relieved; the service life of the pipeline is prolonged; the detachment and replacement are convenient; the sealing property andstability at the connecting part are improved; the air is blocked from entering a coal bed via the pipeline; the possibility of gas explosion is greatly reduced; the development of safety coal production industry is promoted.
Owner:ANHUI UNIVERSITY OF ARCHITECTURE

Anticorrosion and damp-proof cable used in mine

The present invention discloses an anticorrosion and damp-proof cable used in mines. The anticorrosion and damp-proof cable comprises a graphite coating, a compression resistance layer, an anti-corrosion coating, a waterproof glue layer, a water-blocking cable paste layer, PE cushion layers, metal central reinforcing members, a filler layer, an aluminum-plastics compound waterproof layer and power cables, wherein the filler layer is wrapped by the aluminum-plastics compound waterproof layer, the PE cushion layers are filled in the center of the filler layer, the metal central reinforcing members are arranged inside the PE cushion layers, the power cables are arranged in a circumferential manner outside the metal central reinforcing members, the aluminum-plastics compound waterproof layer is wrapped by the water-blocking cable paste layer, the water-blocking cable paste layer is wrapped by the polyethylene waterproof glue layer, the waterproof glue layer is wrapped by the anti-corrosion coating, the anti-corrosion coating is wrapped by the compression resistance layer, and the compression resistance layer is wrapped by the graphite coating. The anticorrosion and damp-proof cable used in mines is simple in structure, low in production cost, long in service life, and excellent in physical performance and anticorrosion and damp-proof performance, and the problem of application of cables in the mines is solved.
Owner:王艳娣

Movable drying equipment for organic fertilizer in animal husbandry

The invention discloses movable drying equipment for organic fertilizer in animal husbandry. The movable drying equipment structurally comprises a bottom frame, a motor, a rolling shaft, a roller, a cleaning opening and a heating machine, wherein the middle part of the bottom frame is in bolt connection with the lower side of the motor; the rolling shaft is in shaft connection with the left side of the motor; an arc-shaped block and a scraping block are used for cleaning the inner side of a rotary ring through a front-back sliding block; in a cleaning process, a cleaning groove is compressed by an outer cover through an air cavity under the pushing of a fixed block through a sealing plate to move front and back to clean a disturbance plate, so that cow dung particles are prevented from being partially stuck at an inlet of a drying machine, and the smoothness of the inlet of the drying machine is reduced and the cow dung particles which enter subsequently are stuck; when a scraping plate is used for scraping stuck dirt, a scraping blade is tilted upwards and an adhesive object is bounced off through an elastic plate under the action of a pull rod, so that the situation that a thicklayer of cow dung is stuck at the inlet of the drying machine to prevent the cow dung particles from entering subsequently and the cow dung particles need to be frequently cleaned is prevented.
Owner:临漳县万圣网络科技有限公司
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