34results about How to "Guaranteed to be friendly" patented technology

The invention provides water-plastic retaining polycarboxylic acid water reducer and a method for preparing same, belonging to the technical field of the cement dispersant. The water-plastic retaining polycarboxylic acid water reducer is characterized by being prepared in nature through copolymerizing a big water-plastic retaining monomer and a small water-plastic retaining monomer, wherein the big water-plastic retaining monomer is prepared by mixing a big ester monomer with a small ester monomer. Prepared from the big water-plastic retaining monomer, the water-plastic retaining polycarboxylic acid water reducer can well retain the water and the plastic of concrete which is prepared through stirring different cement and different aggregate, and the ubiquitous problems of the segregation due to water bleeding and the quick slump loss are effectively solved. The water is used as solvent for the polymerization reaction, which is good for the industrial production and ensures the safe and environmental-friendly production process.

The invention provides an aqueous polyaniline anti-corrosive paint and a preparation method thereof, belongs to the technical field of paint, and is used for solving the problem that the traditional polyaniline anti-corrosive paint causes pollution to the environment and harms the human body. The paint comprises a component A and a component B, wherein the component A comprises 22-45 parts by weight of epoxy resin, 2-10 parts by weight of aqueous film-forming cosolvent, 25-50 parts by weight of deionized water, 0.1-3 parts by weight of aqueous polyaniline nano fiber powder, 5-30 parts by weight of filler, 0.2-0.8 part by weight of non-ionic surfactant, 0.5-1.5 parts by weight of defoaming agent, 0.2-2.5 parts by weight of aqueous dispersant; and the component B comprises 35-65 parts by weight of aqueous curing agent, 28-62 parts by weight of deionized water and 0.2-5 parts by weight of leveling agent. The aqueous polyaniline anti-corrosive paint is a green and environment-friendly type anti-corrosive paint and has an excellent anti-corrosive property.

The invention provides an anticorrosive material for metallic equipment. The material comprises a rubber-asphalt anticorrosive coating material and an organic acid type curing agent, wherein the organic acid type curing agent consists of one or more of citric acid type curing agent, sorbic acid, amino naphthalene disulfonic acid and tartaric acid, and an anti-rusting agent is added in the rubber-asphalt anticorrosive coating material and is prepared from one or more of zinc phosphate, modified zinc phosphate and zinc molybdate, a surfactant, a wetting agent, a dispersing agent and deionized water. According to the anticorrosive material for the metallic equipment and the preparation and construction methods thereof, the anti-rusting agent is innovatively added in the anticorrosive material for the metallic equipment, so that the anticorrosive material for the metallic equipment, prepared by using the anti-rusting agent, has more excellent corrosion resistance while guaranteeing environmental friendliness; meanwhile, the weather resistance is very excellent, and the service life of the metallic equipment is greatly prolonged; the organic acid type curing agent, of which the corrosiveness to metal can be neglected, is used innovatively, and the required curing performance can be effectively guaranteed by the organic acid type curing agent.

The invention discloses a transition metal monatomic catalyst for electro-catalytic synthesis of ammonia. The catalyst is prepared by adopting a photodeposition method according to the following steps: preparing a carbon material serving as a carrier by utilizing carbon powder, sodium nitrate, concentrated sulfuric acid, potassium permanganate, deionized water and the like; dispersing TiO2 and thecarbon material in a mixed solvent composed of water and an organic solvent, adding a transition metal salt, uniformly mixing, reacting at room temperature under illumination, freezing and curing theobtained reaction product, and carrying out vacuum freeze drying to obtain the transition metal monatomic catalyst. The invention also provides an ammonia synthesis method for electrocatalytic reduction of nitrogen by using the transition metal monatomic catalyst. The method for synthesizing ammonia has the characteristics of simple and economic process, environmental friendliness, high yield andthe like.

The invention relates to the field of aquaculture water quality improvement, in particular to a method for preparing a water quality improver from bagasse. The method comprises the following steps: (1) adding lactobacillus fermentation liquid into the bagasse, and performing mixed fermentation at the temperature of 55-60 DEG C for 5-8 days; (2) naturally air-drying a mixed fermentation product obtained in the step (1), grinding into particles with the particle sizes of 500-600 microns, and mixing the particles with urea, boric acid, potassium sulfate, tea bran and manioc wastes; (3) levigating and heating a mixed fermentation product in the step (2); (4) adding water into a mixture in the step (3), heating white phosphorus, smoking by phosphorus smoke, and sealing for fermentation. According to the method, nutritional elements necessary for alga growth are complemented, the water color is stabilized, the water body environment is friendly and healthy, the survival rate of cultured organisms is increased, the morbidity of the cultured organisms is reduced, the culture quality is improved, and very high economic benefits are brought to farmers.

The invention provides an aluminium-water reaction high-energy system apparatus, and the apparatus at least comprises a vortex reaction chamber. The exterior of the vortex reaction chamber is successively provided with a first combustion chamber, a second combustion chamber and a heat-energy power generation system; the vortex reaction chamber, the first combustion chamber, the second combustion chamber and the heat-energy power generation system together form a four-layer concentric jacket kettle; the vortex reaction chamber, the first combustion chamber, the second combustion chamber and the heat-energy power generation system are inside provided with a cleaning pipe, a charge pipe, a water-supplementing pipe, a first-order automatic igniter, a second-order automatic igniter, a first-order automatic exhaust valve, a second-order automatic exhaust valve, a spiral cooling water pipe and a nano-material outlet; and the exterior of the vortex reaction chamber is also provided with a comprehensive regulation and control chamber, and the comprehensive regulation and control chamber comprises a water pump, an oxygen-increasing valve, a multistage temp measurer and a multistage pressure gauge. The apparatus solves deficiencies in the prior art, by using the apparatus, a nano-material is efficiently produced when the aluminium-water reaction generates high energy, and the apparatus guarantees product friendliness, reduces production cost and possesses industrialization universality.

The invention discloses a preparation method of a chiral intermediate for synthesizing statins. The preparation method comprises the following steps: 1, in the presence of a solvent, enabling (3R)-3-[(t-butyldimethylsilane)oxy]-glutarate monoester and 4-nitrophenyl chloroformate to react with alkali so as to obtain 1,5-p-nitrocarbobenzoxyalkyl-(3S)-3-[(t-butyldimethylsilane)oxy]-glutarate diester; 2, in the presence of a solvent, enabling triphenyl methyl phosphonium bromide to react with alkali and then react with 1,5-p-nitrocarbobenzoxyalkyl-(3S)-3-[(t-butyldimethylsilane)oxy]-glutarate diester to obtain a target product, namely (3R)-3-[(t-butyldimethylsilane)oxy]-5-oxo-6-triphenylphosphine caproate. According to the preparation method disclosed by the invention, the reaction process is more stable, the raw material utilization ratio is relatively high, and the yield is obviously improved. More importantly, due to the reduction of impurities, the product can obtain purity according with industrial production through simple crystallization operation, so that the production efficiency is greatly improved, the cost is saved, and the environment friendliness is ensured at the same time.

The invention discloses a cotton field urea application method based on soil nitrogen balance, which specifically includes the following steps: (1) determining the total amount of nitrogen application in the whole growth period of cotton according to the target yield, and calculating the total amount of urea application according to the nitrogen content of urea (2) Apply urea three times during the whole growth period of cotton; (3) Take soil samples according to the S-shaped route before each fertilization, according to the principle of equal amount, random, and multi-point mixing. The present invention is based on soil nitrate nitrogen supply, cotton nutrient demand, and fertilizer yield response, and considers the full utilization of inorganic nitrogen in cotton field soil and soil fertility maintenance. The total amount of urea application is about 30% to 40% lower than that of conventional fertilization, which can improve The utilization rate of nitrogen fertilizer is 5-10 percentage points, which greatly improves economic benefits, does not harm crops, wastes resources, pollutes soil and groundwater sources, does not threaten farmland environment and human health, and can ensure environmental friendliness and sustainable agriculture.

The invention relates to a vapor pressure assisted preparation method of a copper-based halide material and a product and application thereof, which belong to the technical field of polycrystalline material preparation. The invention discloses a preparation method of a copper-based halide material, which comprises the following steps of mixing cesium halide, cuprous halide and halogen acid, and then carrying out cooling reaction at the rate of 0.1-5 DEG C/h. When the molar ratio of cesium to copper to halogen acid is 3: 2: 5, the generated compound emits blue light of 450 nm; when the molar ratio of cesium to copper to halogen acid is 1: 2: 3, the generated compound emits blue light of 580 nm; when the molar ratio of cesium, copper and haloid acid is between 3: 2: 5 and 1: 2: 3, the generated compound emits white light (a combination of blue and yellow light).

The invention relates to a method for ring-opening polymerization preparation of degradable polyester from reclaimed polyesters. The method comprises the following steps of: adding reclaimed aromatic polyester into a reaction kettle, heating and melting; and adding aliphatic cyclic polyester and a catalyst, stirring uniformly, performing ring-opening polymerization under a certain pressure and a certain temperature, reacting, and thus obtaining the degradable polyester. With the method, the reclaimed aromatic polyester, namely polyethylene terephthalate and polybutylene terephthalate, is reused, so that harm to the environment is reduced; the aliphatic-aromatic copolyester is prepared by ester exchange and ring-opening polymerization of the aliphatic cyclic polyester and the aromatic polyester, and the copolyester has good mechanical property due to an aromatic unit and biodegradability due to an aliphatic unit and is environment-friendly; and the degradable aliphatic-aromatic copolyester is produced by using the reclaimed polyesters as raw materials, so that the production cost is reduced, and the market competitiveness of the prepared polyester product is improved.

The invention provides an organic matter humification method, and belongs to the technical field of stabilization and recycling of organic waste. According to the method, activated soil minerals and humus soil containing soil microorganisms and metabolites thereof are added into solid or liquid organic waste, and the soil microorganisms are utilized to humify organic matters to obtain high-quality artificial humus close to natural humus. The organic waste can be effectively utilized to manufacture high-quality humus to be returned to soil, the fertilizer, water and soil retention capacity of the soil is improved, and the natural soil inherent substance circulation process is manually supplemented.

The invention discloses a copper-silicon catalyst silanized and modified by a nitrogen-containing silane coupling agent. The copper-silicon catalyst comprises a copper species, silicon dioxide and silicon dioxide silanized and modified by the nitrogen-containing silane coupling agent, wherein the copper species accounts for 10-30wt% of the weight of the copper-silicon catalyst, the silicon dioxideaccounts for 60-85wt% of the weight of the copper-silicon catalyst, and the nitrogen element in the silicon dioxide silanized and modified by the nitrogen-containing silane coupling agent accounts for 0.1-2wt% of the weight of the copper-silicon catalyst. The invention also discloses a preparation method of the catalyst and application of the catalyst in preparation of ethylene glycol through hydrogenation of dimethyl oxalate. After silicon hydroxyl in the copper-silicon catalyst is covered with the nitrogen-containing silane coupling agent, desorption of methyl glycolate is promoted so thatthe stability of the catalyst under severe conditions is improved, and the alkalinity of the catalyst is weakened and generation of by-products is inhibited. The activity of the catalyst is improved by doping the nitrogen element in the catalyst, the electron donating effect of the nitrogen element enables the active copper species to have more excellent hydrogenation activity, and the conversionrate of the catalyst is greatly improved.

The invention provides a biodegradable lubricating grease composition and a preparation method thereof. The lubricating grease composition comprises, by mass, 70%-90% of lubricating base oil, 4%-30% of a lithium-based thickening agent and 0.1%-5% of an additive. The additive comprises a biodegradation accelerant and is a compound shown in the formula I which is described in the specification, wherein X is phosphorus or boron, R1 is one or more of methyl, isopropyl, 2-methyl propyl, 1-methyl propyl, benzyl and hydrogen, and R2 is selected from C8-C18 alkyl. The lubricating grease composition provided by the invention has excellent degradation performance, has little influence on other properties while ensuring environmental friendliness, still has good colloid stability, excellent mechanical stability and excellent antioxidant effect, and has a good industrial application prospect.

The invention relates to a walnut shell based ecological composite structure material and a preparation method thereof. The method comprises the following steps: (1) simply processing walnut shells byremoving kernels and drying; (2) arranging the dried walnut shells in a mold; (3) heating an additive, and pouring the additive into the mold; (4) in the additive cooling process, carrying out stamping, air hole removing and cooling forming on a material in the mold; and (5) taking out the material from the mold and machining the material to obtain the walnut shell based ecological composite structure material. Compared with the prior art, the method has the advantages that the process is simple, the universality is high, the method can be popularized in walnut original places, walnut shell productivity is consumed, and economic development of villages and towns is promoted.

The invention provides a disassembly construction method for a dual-cantilever ship unloader. The method is characterized by comprising the steps that S1, with cutting demarcation points of connectorsas the basis of the whole ship unloader, components are divided, and the connectors among the cutting demarcation points are all components which need to be disassembled; S2, the disassembly sequenceof all the components is determined, girders of the two sides of a main ship unloader body and pull rods of the girders are disassembled at first, and then the components on the main ship unloader body are disassembled from top to bottom; S3, anti-toppling and reinforcement measures are arranged for the ship unloader, wheels of a large vehicle of the ship unloader are anchored and locked, the twoside faces of a walking mechanism of the large vehicle are provided with inclined supports, the inclined supports are welded to a frame supporting disc crossing a rail, and a frame supporting disc base is placed on a concrete board face of a wharf; S4, hoisting of a floating crane and a crane is used for disassembling the ship unloader. According to the disassembly construction method, the scientific and reasonable disassembly method and construction sequence and the complete protection measures are determined, construction is organized according to the construction method, and the construction safety, project progress and environmental friendliness are guaranteed.