37results about How to "Reach friendly" patented technology

The invention relates to a special humic acid type compound fertilizer for broad beans. The compound fertilizer is prepared from the following raw materials in percentage by weight: 60-80% of a bio-char organic fertilizer matrix, 2-6% of urea, 12-25% of monoammonium phosphate, 3-5% of potassium sulphate, 2.5-4.5% of calcium superphosphate and 0.005-0.015% of microelements. The compound fertilizer provided by the invention not only can be used as nutritional elements required in the full growth period of broad beans, but also can provide sufficient humus to the soil, so that the soil structure is improved.

The invention relates to a stabilizer for heavy metal compound contaminated soil and a preparation method of the stabilizer for heavy metal compound contaminated soil. The stabilizer comprises sulfide, shell powder and red mud, wherein the molar ratio of the sulfide to effective-state gross of heavy metals lead, zinc and cadmium is 1.5 to 6; the molar ratio of the shell powder to the effective-state gross of heavy metals lead, zinc and cadmium is 1-4; and the red mud is added in a molar ratio of the content of iron in the red mud to the effective-state content of arsenic in soil of 2-8. The preparation method of the stabilizer comprises the following steps: drying the red mud by airing, grinding and sieving the dried red mud; then, cleaning the shell powder, grinding and sieving after drying by air; and preparing the sulfide into an aqueous solution, thereby obtaining the stabilizer. Based on the effective-state content of the heavy metals in the soil, the content of each component is reasonably prepared, so that the stabilizer can be applicable to compound contaminated soil with high leaching concentration, can be used for effectively reducing the leaching concentration of heavy metals in the soil and overcoming the defect of poor stabilization effects of the existing medicament, and has a certain application value.

The invention discloses an intumescent flame retardant and a preparation method and application thereof. The intumescent flame retardant is prepared from the following raw materials in parts by weight: 4-6 parts of modified ammonium polyphosphate, 3-4 parts of hyperbranched polyester, 0-1 part of polyvinyl alcohol and 45-50 parts of absolute ethanol. The hyperbranched polyester in the intumescentflame retardant serves as a char forming agent and also a film forming agent. The invention provides the application of the intumescent flame retardant in engineering plastics, and during application,the surface of the engineering plastics is treated by magnetron sputtering, surface energy can be improved without the need of complicated surface wetting agents or chemical deposition treatment, theintumescent flame retardant is easy to coat and the adhesive force reaches grade 5B. The hyperbranched polyester in the fire retardant has excellent char forming property, improves the adhesion firmness of the coating and also achieves excellent flame retardant effects; and the limit oxygen index LOI on polypropylene reaches 32% and reaches grade V0 in a UL-94 test, and the coating has excellentflexibility, can adapt to deformation of a matrix without falling and has wide applicable environments.

The invention belongs to the technical field of preparation of lubricating grease and in particular relates to a carbon microsphere copper-silver alloy, modified lubricating grease, a preparation method and application. Glucose is used as a carbon source and is subjected to hydrothermal synthesis to reduce copper and silver in situ, so as to prepare the copper-silver alloy; the copper-silver alloyis used as an additive and is attached to a carbon microsphere to obtain the carbon microsphere copper-silver alloy; the carbon microsphere copper-silver alloy is used as an additive to prepare lithium-based lubricating grease, so that novel modified lithium-based lubricating grease is obtained; the modified lithium-based lubricating grease contains microsphere-shaped structures including the carbon microsphere, metal nanoparticles and the like, and has an excellent self-lubricating property and an ultralow friction property; the lubrication performance of a system can be improved and the anti-wear and friction reduction performance of the modified lubricating grease is more excellent, so that the service life of a part is prolonged. Compared with existing lithium-based lubricating grease, the modified lubricating grease has the advantages that the anti-wear performance and the friction reduction performance are greatly improved.

The invention belongs to the field of materials, and relates to a lithium manganate and its preparation method and application. The preparation method of the lithium manganate comprises preparing a metal salt into a metal salt solution with a conductivity ≥ 200uS / cm, and then adding manganese metal element and / or manganese metal oxide, dopant, oxidant, water, ammonia solution, The metal salt solution undergoes chemical corrosion and crystallization reaction under the conditions of oxidation-reduction potential ORP value ≤-100mv, complexing agent concentration of 3-50g / L, and electrical conductivity ≥200uS / cm, followed by magnetic separation, solid-liquid separation, and washing Calcined after drying and mixing with lithium source. Adopt the method provided by the present invention to prepare lithium manganate, dissolving and crystallizing process does not produce waste water, and consumes water constantly, thereby can achieve the purpose of being friendly to the environment, and use lithium manganate thus obtained as lithium ion battery cathode material, can also improve The gram capacity and cycle stability of lithium-ion batteries have great industrial application prospects.

The invention relates to the field of biomedical antibacterial. A hydrophobic biomedical antibacterial agent, by weight, add 1-3 parts of organosilicon monomer into a 50ml beaker, and add 10 parts of solvent, ultrasonic for 30 minutes and stir for 10 minutes; 5 parts of graphene quantum dots are coated The nano-silver antibacterial agent was placed in a 50ml beaker, and 10 solvent was added, and ultrasonicated for 30 minutes; the solution of the organosilicon monomer was added to the prepared graphene quantum dot-coated nano-silver antibacterial agent dispersion, and stirred for 90 minutes; the prepared hydrophobic The silanized graphene quantum dot-coated nano-silver antibacterial agent dispersion is cooled at room temperature and dried to obtain a biomedical antibacterial agent with good antibacterial and hydrophobic properties.

The invention discloses a zinc-aluminum alloy surface treatment process, which comprises the steps of: (1) polishing the alloy substrate; (2) cleaning the surface of the polished alloy substrate; (3) transferring the surface-cleaned workpiece into In the vacuum furnace, after evacuating to the background vacuum, perform glow cleaning or ion source cleaning, and then sequentially use magnetron sputtering to deposit the transition layer, and use reactive sputtering to deposit the color decoration layer; (4) transfer the workpiece into the oven Or heat and keep warm on the powder spraying line; (5) Electrostatically spray thermosetting transparent powder on the surface of the workpiece, and form a surface decorative coating after curing. The invention combines vacuum coating and powder spraying, and carries out electrostatic spraying of thermosetting transparent powder on the surface of the alloy substrate to achieve good appearance decoration and performance. At the same time, the process is easy to control, the production process is stable, and the yield rate is high. There is no requirement for waste water discharge.

The invention discloses a method for separating and extracting valuable elements from boron-magnesium-iron paragenic ore. The method comprises the following steps: sufficiently and uniformly mixing crushed boron-magnesium-iron paragenic ore and reduced coal powder, performing selective reduction, grinding and separating, thereby obtaining directly reduced iron and magnetic-separation tailings; performing flotation separation on the magnetic-separation tailings to remove redundant carbon, and performing steps of sulfuric acid leaching, washing alkaline leaching deposition, low-temperature crystallization separation and high-temperature crystallization separation, thereby obtaining white carbon black, boric acid and magnesium sulfate monohydrate respectively. In the whole process, residual coal powder, acid liquids and alkali liquids can be all circulated and utilized, and the method has the characteristics of high iron, boron, magnesium and silicon separation efficiency, high recycling rate and comprehensive resource utilization, and has important significance in developing the boron-magnesium-iron paragenic ore resource which is rich in reserves in China.

The invention relates to a method for treating phenol wastewater. The method comprises: (1) a step of vaporizing phenol waste water with heat energy provided by a solar concentrating heat collection device to form phenol water vapor; and (2) a step of electrolytically oxidizing the phenol water vapor with electric energy provided by a photovoltaic cell . The present invention realizes the degradation of vapor state phenol for the first time, and degrades phenol in the vapor phase to achieve an ideal degradation rate of phenol; in addition, the activated molecules in the excited state with high energy content can undergo less intermediate incomplete oxidation The products are oxidized to carbon dioxide and water with simultaneous production of hydrogen. The invention does not introduce any other form of energy during the electrolysis period, realizes the utilization of the full spectrum of solar energy, breaks the limitation of the traditional photovoltaic method on the utilization of sunlight, truly achieves the purpose of environmental friendliness, and realizes on the basis of energy saving The degradation of phenol wastewater is achieved, which provides a new direction for the green and efficient treatment of industrial organic wastewater.

A mesoporous solid alkali and functional material, characterized by mesoporous silicon molecular sieves containing rare earth metal or transition metal atoms, with a pore diameter of 4-10 nm, and a mesoporous silicon molecular sieve with an alkali strength of 9.3-22.5. The mesoporous solid base and functional material of the invention can be used as shredded tobacco additives for reducing the content of nitrosamines in cigarette smoke. After adding the mesoporous solid alkali and functional material of the invention to shredded tobacco, the total content of nitroso compounds in the smoldering smoke of cigarettes is reduced by 30-47%. The invention discloses its preparation method.

The invention provides a method for increasing the content of urease and phosphatase in farmland. This method is the first to spray a specific amount of potato and / or sweet potato starch processing wastewater on the farmland after soil preparation and furrowing, and perform deep plowing on the farmland after spraying potato and / or sweet potato starch processing wastewater. It is found that the content of urease and phosphatase in the farmland can be significantly increased. Compared with the method of applying inorganic fertilizers, the content of urease and phosphatase in the soil can be increased by at least 25% in this application, and it can be decomposed by urease and phosphatase Transform the organic nitrogen and phosphorus macromolecules in the soil into inorganic salts, promote the absorption of nitrogen, phosphorus and other nutrients by crops, and finally improve the fertilizer utilization rate and soil fertility; at the same time, the farmland treated with this method will increase the yield by at least 20 per mu. More than %, for example, compared with single application of chemical fertilizers (N equal amount), the yield of corn per mu can be increased by 20% to 35%.