30results about How to "Easy to operate and environmentally friendly" patented technology

The invention relates to a laser heat treatment hardening method for a steel pipe cast iron roll surface. The method comprises the steps of dividing an arc roll surface into 3-9 areas, spraying light-absorbing coatings on cast iron roll to be processed, and heating the roll surface to a micro-melting state by high-energy laser beams. A laser strengthened layer obtained by the method is metallurgically combined with a matrix, and is advantageous in that crystal grains are refined obviously, the thickness of the hardening layer ranges from 0.3 mm to 1.0 mm, the hardness reaches HV 620-760, the laser strengthened layer has good wear-resistance performance, and the lifetime of the roll is improved for 1-5 times. Moreover, according to the method provided by the invention, no subsequent process is needed after the laser hardening treatment of the steel pipe cast iron roll, and production cost is reduced. The method is practical and reliable, is convenient for operation, is environment-friendly, and has a great popularization value and huge social benefits.

The invention belongs to the technical field of carbon powder for office consumables, and particularly relates to monocomponent non-magnetic color fading carbon powder for a laser printer and a duplicator and a preparation method thereof. The carbon powder is prepared by mixing a microspherical reaction system prepared from sodium bicarbonate, an alkaline compound, a charge regulator, a color variable dye, a carrier and a drying agent, and a matrix polymer prepared from polystyrene resin, a modifier and the charge regulator fully. The function of automatic color fading of handwriting on printed paper is realized by changing the composition of a carbon powder system under the condition of laminating and stacking the printed paper normally, the printed paper of abandoned temporary files can be used repeatedly, and the phenomenon that the original handwriting appears again does not occur when the printed paper is used again, so a large amount of office paper is prevented from being wasted effectively, resources are saved, simple and convenient operation is achieved, and the carbon powder is environmentally-friendly and effective. The carbon powder is suitable for printing and duplicating the temporary files or drafts, and ordinary carbon powder is still used for files which are needed to be stored for a long term.

The invention provides an aluminum-copper composite plate adopting aluminum alloy and a preparation method of the aluminum-copper composite plate. The preparation method comprises the steps that oil stains on the surface are removed; homogenizing annealing treatment and water quenching treatment are carried out; surface oxide skin and other impurities are removed, a foamed aluminum plate is subjected to electrochemical polishing treatment, and the surface roughness of the aluminum alloy plate and the copper plate is ground to 50 micrometers or below; the copper plate, the foamed aluminum plate and the aluminum alloy plate are sequentially aligned, stacked, clamped and fixed from bottom to top; cold rolling composite treatment is carried out; annealing heat treatment is carried out under the protection of inert atmosphere, molten pure aluminum liquid is slowly injected into the foamed aluminum plate layer, and rapid cooling is carried out after annealing heat treatment is finished; cold finish rolling treatment is carried out; and heat treatment is carried out under the protection of mixed gas of inert gas and hydrogen. In the aluminum alloy plate, the content of Si is 0.5%-1.2%, the content of Cu is 3.9%-4.8%, the content of Mg is 0.4%-0.8%, the content of Mn is 0.4%-1.0%, and the content of Zn is 0.25%. The interface bonding strength of the aluminum-copper composite plate finished product can be effectively improved, and the cracking occurrence rate of the bonding surface of the copper plate and the aluminum alloy plate is lower than that of an existing aluminum-copper composite plate.

The invention relates to the field of vaccine processing, and particularly provides a vaccine and an emulsification process and application thereof. According to the emulsification process of the vaccine provided by the invention, an antigen is dripped into an adjuvant filtered and sterilized by a filtering and sterilizing device, so that the emulsified vaccine is prepared. The sterilization of the adjuvant adopts a filtering and sterilizing process to replace a conventional high-temperature sterilizing manner, the method is simple and easy to operate, ingredients and properties of the prepared product are uniform, the stability is good, and the immune effect is remarkably increased. The vaccine provided by the invention is prepared by applying the emulsification process for the vaccine. Ingredients and properties of the vaccine are uniform, the stability is good, the immune effect is remarkably increased, and the vaccine can be industrially produced and applied in production and life.

The invention discloses perfluorosulfonic acid/coupled phosphotungstic acid lignin coating liquid, an ion exchange membrane and a preparation method thereof. The preparation raw materials of the perfluorosulfonic acid/coupled phosphotungstic acid lignin coating liquid comprise coupled phosphotungstic acid lignin, perfluorosulfonic acid resin and a solvent, wherein the mass ratio of the coupled phosphotungstic acid lignin to the perfluorinated sulfonic acid resin is (0.1-15): 100. The coupled phosphotungstic acid lignin has the advantages of good dispersity, good hydrophilicity, high proton conductivity and the like, a proton transfer channel is easily regulated and controlled from the molecular scale, rapid proton transfer can be realized, meanwhile, the water retention rate of the perfluorosulfonic acid exchange membrane under high-temperature and low-humidity conditions is increased, and the industrialization development of proton exchange membrane fuel cells is promoted.

The invention relates to the field of preparation of lithium ion battery separators, and in particular relates to a method of preparing a PP/PA66 composite battery separator. Alpha-methyl styrene (AMS), N-phenylmaleimide (NPMI) and glycidyl methacrylate (GMA) are firstly used for copolymerization to prepare a macroinitiator PANG; the prepared PANG and PP are subjected to melt blending to prepare aPP-g-PANG graft copolymer, and the graft copolymer can be used as a compatibilizer for the PP/PA66 system and can effectively improve the heat resistance of the composit.; a PP/PA66 compatibilized blend is prepared by adopting a melt blending method; and a cast base film is prepared by the compatibilized blend, and a composite battery separator is prepared through a uniaxial tension process. Compared with the PP separator, the PP/PA66 composite battery separator prepared in the invention obtains effective improvement on heat resistance and hydrophilicity.

The invention provides a method for preparing a magnetic multi-effect adsorbent by using enzymolysis residues as s raw material. The method comprises the following steps: washing the enzymolysis residue raw material to be neutral, and drying; then uniformly mixing the dried raw material with magnetic nano-particles according to the weight ratio of (5: 1)-(1: 5), and preheating at 80-120 DEG C for 1-5 hours; transferring into a ball milling tank, and carrying out mechanical ball milling for 1-5 hours at room temperature; and finally, opening the treated ball milling tank, taking out materials in the tank, sieving, separating and ball-milling zirconium beads, thereby obtaining the magnetic multi-effect adsorbent prepared from the enzymolysis residues. The magnetic multi-effect adsorbent can be used for adsorbing pollutants in wastewater, and the pollutants are anionic dyes, cationic dyes and heavy metal ions. The preparation method is simple to operate, low in cost, easy to collect and high in yield, and the prepared magnetic adsorbent realizes effective adsorption of anion fuel, cationic dye and heavy metal ions, and has important practical application value and wide market prospect.