1269results about How to "Production environmental protection" patented technology

The invention discloses a method for preparing a nano pore composite humidity adjusting material. An organic macromolecular material, a natural macromolecular material and an inorganic porous material are compounded into the humidity adjusting material by synthesis so as to absorb the advantages of various humidity adjusting materials and improve the wet capacity and humidity adjusting performance of the synthesized material; and a large amount of nano-scale pore structures are formed on the material through the synthesis process so as to further improve the humidity absorbing and discharging performance of a product. Compared with the prior art, the method has the advantages that: 1) the material has high humidity absorbing and discharging capacity and high humidity absorbing and discharging response speed, and can efficiently and quickly adjust the relative humidity of a microenvironment; 2) the material is renewable and very convenient to reuse; 3) the production process and the production equipment are simple and easy for industrialization; and 4) the production process is environmentally-friendly.

The invention provides a micro-nano mixed welding paste capable of being used for pressureless sintering preparation and a packaging method thereof. The interior of a material is filled with micron-sized spherical particles as a matrix, and the nano-particles are uniformly filled in the material, sintering driving force is provided, so that the whole material is subjected to pressureless sinteringforming at a low temperature. The preparation method comprises the following steps of S1, preparing micron particles with specific sizes and carrying out acid washing and drying; S2, mechanically stirring the micron particle powder with a surfactant, an organic carrier and an organic solvent to obtain a mixture A; S3, fully mixing the metal nano-particles with a dispersing agent, the organic carrier and the organic solvent to obtain a mixture B; and S4, mixing the mixture A and the mixture B to obtain the micro-nano mixed welding paste. According to the micro-nano mixed welding paste capableof being used for pressureless sintering and the preparation method thereof, the welding paste solves problems of volume shrinkage and cracks of the nano welding paste during sintering, the reliability of the welding spots is improved, and the welding paste can be used for packaging and manufacturing for power devices; and according to the scheme, the production process of the welding paste is simplified, the preparation process is green and environment-friendly, the packaging method provided is simple and practical and is beneficial to market popularization.

The invention provides a liquid-phase stripping preparation method of graphene. The liquid-phase stripping preparation method comprises the steps that first, an aromatic compound is used as a stripping agent to prepare a stripping agent solution, graphite powder is added, and graphite pre-stripping dispersion liquid is obtained after sufficient stirring; second, the graphite pre-stripping dispersion liquid obtained in the first step is subjected to stripping dispersion through ultrasonic and / or mechanical shear to obtain a graphene mixed dispersion system; third, the graphene mixed dispersion system obtained in the second step is centrifuged, the upper-layer solution can be taken for dialysis, and impurities are remove to obtain a pure graphene product. The liquid-phase stripping preparation method can effectively separate graphite flake layers, a large amount of graphene is obtained within a short period of time, and the prepared graphene is single-layer or double-layer graphene and is good in conductive / thermal performance and excellent in comprehensive performances. The liquid-phase stripping preparation method has the advantages of being simple in operation, high in efficiency and green, being environmentally-friendly and the like, and achievement of industrialized graphene preparation is hopeful.

The invention provides a conducting-polymer dipped and coated lithium-ion battery composite-electrode material and a preparation method thereof. A high-polymer conducting polymer is coated on the lithium-ion battery electrode material of the composite electrode material, the conducting polymer is the conducting polymer which is easily dispersed into an aqueous solution, and the aqueous solution of dispersants, such as polystyrolsulfon acid and the like is used as a dispersing medium. The composite electrode material is prepared through the following steps of: dipping a lithium-ion anode material or cathode material into the aqueous solution of the high-polymer conducting polymer, and obtaining the surface-coated lithium-ion battery composite-electrode material through dipping and coating processing. The composite electrode material has cheap preparation raw materials, the surface of the novel composite electrode material is uniformly coated, and the composite electrode material has the advantages of high specific capacity, high charging and discharging efficiency and long cycling life. Compared with the prior art, the preparation method of the composite electrode material has the advantages of simple process, low cost, good effect and green and environment-friendly production process, is easy for industrial popularization and is convenient for large-scale industrialized production.

The invention belongs to the field of magnetic circuit parts of motors, and discloses a protective box type amorphous, microcrystal or nano-crystal alloy stator core for a motor and a preparation method thereof. The method comprises the following steps of: stamping a coiled alloy strip (3) to form a plurality of same annular stamped sheets, wherein the tooth ends of inner teeth (1) of the stampedsheets are positioned on the same circumference and the outer side of each stamped sheet is provided with at least one positioning groove (2); stacking the plurality of annular stamped sheets in a protective box with open upper end, putting the stamped sheets and the protective box into insulated coating solution together and performing insulated dip-coating treatment; taking out the stamped sheets and the protective box together, performing compactness treatment on the annular stamped sheets, fixing an upper end panel of the protective box and the inner center surface together, and forming the stator core; and performing integral annealing treatment on the stator core of the sealed protective box. By the method, the process problems that the stator core is easily damaged to drop residue and cracks among layers, the performance declines because the adhesive stress cannot be eliminated and the like are solved, and the performance of the stator core is greatly improved.

The invention relates to disk-type DC motors, particularly to a disk-type coreless permanent-magnetic brushless DC motor. The technical scheme comprises that the disk-type coreless permanent-magnetic brushless DC motor comprises two housings which are connected in a sealed mode, two end covers correspondingly arranged on the housings, and two bearings correspondingly arranged on the end covers. Each end cover is provided with a stop flange which extends to the end surface of the corresponding bearing, and an O-shaped seal ring is arranged between each stop flange and the end surface of the corresponding bearing. The disk-type coreless permanent-magnetic brushless DC motor also comprises an armature winding, the armature winding is in a ring shape and comprises an arc-shaped first part away from the a shaft, an arc-shaped second part close to the shaft, and arc-shaped third parts connected between both ends of the first part and the corresponding ends of the second part; the connection line of the centers of the first part and the second part is disposed in the middle section of the armature winding; the inner diameter of the first part is 1.5-2 times as large as that of the second part. The disk-type coreless permanent-magnetic brushless DC motor has good sealing performance and a high magneto-electricity conversion rate.

The invention discloses a process method for producing a balance weight for a compressor by powder metallurgy, which comprises the steps that: (1), raw materials comprising Mn (17-25%), C (0.5-1.5%) and Fe (the rest) are uniformly blended to produce raw material powder required by production; (2), the raw material powder is put into a mechanical press (or four-column hydraulic press) for compression moulding so as to obtain a pressing compact for the balance weight; (3), the pressing compact for the balance weight is put into a continuous mesh belt furnace (or push rod furnace) for sintering to obtain a sintering compact for the balance weight; and (4), the sintering compact for the balance weight is subjected to shot blasting treatment to obtain a finished product of the high manganese steel weight balance for the air compressor. According to the production method disclosed by the invention, the stability of the sizes of workpieces is good, no impurity is generated, the quality of the surface is excellent, and the components are uniform and stable; the weight variation among products of different batches is small and can be controlled within 1%; no oxidation is generated in the production process, the internal organization of metal is excellent, the crystalline grain is finer, and the bad organizations such as coarse crystal and mixed crystal can be avoided.

The invention provides a solar optothermal coupled high-temperature water electrolysis hydrogen production system. The system comprises a heat energy supply module, a hydrogen production and separation module and a storage module which are sequentially connected; the heat energy supply module comprises a condensation device, a heat collection device, a heat storage high-temperature heat pipe heat exchanger and a heat exchanger unit which are sequentially connected, and hydrogen and hydrogen are separated through electrolysis after a water and hydrogen mixture in the hydrogen production and separation module is heated into a steam and hydrogen mixture above 800 DEG C. Compared with the prior art, the hydrogen production system has the advantages that fossil energy does not need to be consumed, the productive process is more green and environmentally friendly, and the power consumption is greatly reduced; a stable heat source is provided through the system, the problem that a photo-thermal system is not stable due to changes in the weather is solved, the availability of the system is improved, and meanwhile the electrolytic efficiency of the system is improved.

The invention relates to asphalt and a preparation method thereof, and specifically relates to colored asphalt and a preparation method thereof. The colored asphalt comprises the components of, by weight: 30-50% of C5 petroleum resin, 30-55% of C9 petroleum resin, 5-30% of an inorganic pigment, 1-6% of a powdery styrene-butadiene rubber SBR modifying agent, 0.5-6% of a powdery thermoplastic styrene-butadiene rubber SBS modifying agent, and 5-20% of powdery solid rosin. According to the colored asphalt and the preparation method thereof provided by the invention, the colored asphalt is prepared into powdery solid or solid particles, and is directly added into a stirring tank and is mixed with heated graded stones with a certain temperature, such that colored asphalts with various colors can be directly produced, and road pavement and rolling constructions can be carried out. With the method, colored asphalt mixture preparation process is greatly simplified, and colored pavement construction is greatly simplified.

The invention discloses a production process for a stainless steel damping composite board, which comprises the following steps of: firstly, preheating a hot galvanizing cold-rolled steel sheet; secondly, rolling and adhering a macromolecular damping adhesive film on the preheated hot galvanizing cold-rolled steel sheet by using a film coating roller; thirdly, rolling and combining the stainless steel sheet on the macromolecular damping adhesive film by a sheet coating roller, heating the whole sheet body by a pressing roller at the same time and further performing rolling and adhesion to realize stable solidification; and finally, cooling the whole sheet body by using forced air cooling and rolling the cooled sheet to obtain the stainless steel damping composite board, wherein the stainless steel sheet is a surface plate, the hot galvanizing cold-rolled steel sheet is a base plate and the macromolecular damping adhesive film is a middle layer; the preheating temperature of the hot galvanizing cold-rolled steel sheet is 80 to 120 DEG C; the temperature of the film coating roller is 120 to 150 DEG C; the temperature of the sheet coating roller and the pressing roller is 170 to 220 DEG C; and the composite board is cooled to 20 to 30 DEG C by the forced air cooling. The process has the advantages that: the production is simple; the cost is low; and the product uses few stainless steel, has a high strength, and can damp and reduce noises and be produced continuously with low cost and high production process.

The invention discloses a preparation method for a buffering layer material of a copper indium gallium selenide film solar battery. By the method, a precursor of chemical bath reaction is prepared by using a zinc sulfate solution as a Zn<2+> source, a thiourea solution as a S<2-> source, ammonia water as a buffering agent and sodium citrate as a complexing agent; and a Zn(O,S) semiconductor film with uniform and compact grain size distribution and good adhesive force is prepared on a copper indium gallium selenide film and the common glass substrate and serves as the buffering layer of the copper indium gallium selenide film solar battery. The Zn(O,S) instead of CdS serves as the buffering layer of the copper indium gallium selenide film solar battery, so production of the copper indium gallium selenide film solar battery is environment-friendly and economic. The band gap width of the Zn(O,S) is more than that of the CdS, so more incident photons can reach an absorption layer through the buffering layer, short-circuit current of the battery is increased and photoelectric conversion efficiency of the battery is improved.

The invention discloses a rubber powder epoxy resin asphalt material, as well as a preparation method and a using method thereof. Modified asphalt comprises an A component and a B component, wherein a weight ratio of the A component to the B component is 1:(2-20); the A component comprises 100 parts of epoxy resin by weight; and the B component comprises 90-120 parts of asphalt material, 10-40 parts of rubber powder material, 5-20 parts of modified monomer, 10-70 parts of fatty group binary acid and fatty acid polymer and 0.05-2 parts of accelerant. According to the rubber powder epoxy resin asphalt material, the rubber powder material is adopted, so that the unit price of the epoxy resin asphalt material can be reduced, the low-temperature flexibility of the epoxy resin asphalt material can be improved, and waste rubber can be fully used; and the rubber powder epoxy resin asphalt material, the preparation method and the using method are energy-saving and environment-friendly. The rubber powder epoxy resin asphalt material can serve as a cementing material of a bonding layer and a waterproof layer of a deck and a pavement, asphalt concrete in road engineering, top dressing and the like, and can also be used for waterproofness and anticorrosion of a structure and a building.