34results about How to "Make sure to generate" patented technology

The invention relates to an efficient cementitious capillary crystalline waterproofing coating. The coating is prepared from the following raw materials in parts by weight: 40-70% of silicate cement, 12-23% of high-activity master batch, 20-30% of quartz sand, 0.3-1.2% of a catalyst and 1.2-3% of a diffusion agent. According to the invention, active chemical materials are doped into silicate cement and quartz sand which are adopted as base materials so as to prepare a powder material; then the powder material can be mixed with water to prepare slurry which can be coated or sprayed onto the surface of cement concrete, or the powder material can be coated or pressed onto the surface of the cement concrete which is not completely solidified so that the anti-penetrability performance of the concrete is increased; the function mechanism is as follows: the active chemical materials in the waterproofing coating permeate into the inside of the concrete and react with various oxides in the concrete, then water-insoluble crystallines are formed in the concrete and capillary channels are blocked, so that the concrete is compact and fireproof.

The invention relates to a hollow structure potassium magnesium titanate whisker material and a method for preparing the same. The technical scheme is that the method comprises evenly mixing a titanium-containing raw material, a magnesium-containing raw material and a binding agent, performing forming, performing heat treatment and then grinding the mixture to obtain a material A with the particle size of 0.088-1 mm and a material B with the particle size smaller than 0.088 mm; evenly mixing a potassium-containing raw material, a titanium-containing raw material and a binding agent, performing forming, performing heat treatment and then grinding the mixture to obtain a material C with the particle size smaller than 0.088 mm; evenly mixing the material A, the material B, the material C and a potassium-containing raw material, performing heat treatment and then grinding the mixture to obtain a ground material; finally adding the material C, the potassium-containing raw material and water to the ground material, mixing the mixture, pressing the mixture into green bodies, drying the green bodies, performing heat treatment, and then performing washing, filtration and drying to obtain the hollow structure potassium magnesium titanate whisker material. The external diameters of whiskers of the prepared hollow structure potassium magnesium titanate whisker material are 0.1-5 microns, the internal diameters of the whiskers are 0.05-1 micron, and the lengths of the whiskers are 3-30 microns. The hollow structure potassium magnesium titanate whisker material is high in crystallinity and uniform in size.

A spark-igniting engine combustion system is provided, which comprises: an electric control unit ECU, a high energy spark coil, a spark plug, an engine cylinder head and a hemispherical combustion chamber. Wherein, the spark plug is matched with the engine cylinder head and is positioned on the latter; the electric control unit ECU controls the high energy spark coil to facilitate the spark plug producing electric spark, so as to realize ignition in the hemispherical combustion chamber; the engine cylinder head adopts double spark plug structure; the electric control unit ECU adopts two suites of independent energy storage and ignition modules being respectively connected with the high energy spark coil; the varied ignition control strategy is adopted to control the ignition by the double spark plug. The invention is able to ensure the cold start or successful ignition of engine, enhance the combustion velocity and the rate of flame spread, organize the movement of air flow in the combustion chamber and assure full combustion in the engine, thereby improving the thermal efficiency of the engine and reducing the emission of tail gas.

The invention relates to a method for preparing water-soluble acrylic epoxy resin, which comprises the following steps of: performing half ring-opening reaction on epoxy resin and alkyl monobasic acid under the catalysis of tertiary amine, and controlling the molar ratio of the alkyl monobasic acid to epoxy groups in the epoxy resin to be 1:2 in the reaction process; and performing esterification reaction on the epoxy resin and acrylic polymer under the catalysis of the tertiary amine. By accurately controlling the using amount of the alkyl monobasic acid, the ring-opening reaction degree of the epoxy resin and the generation of an esterification product are ensured. The epoxy resin subjected to half ring-opening reaction comprises only one epoxy group, and only one carboxyl is esterified when epoxy monobasic acid ester obtained through half ring-opening reaction and acrylic acid are subjected to esterification reaction, so the reaction process is stable, gelatination can be avoided, and the method is suitable for mass production.

The invention discloses a preparation method of a vegetable oil modified polymer polyether defoamer, and the method comprises the following steps: by using epoxidized vegetable oil, fatty alcohol, ethylene oxide and propylene oxide as raw materials, carrying out ring-opening polymerization reaction under the action of a catalyst to obtain the vegetable oil modified polymer polyether defoamer. Thecatalyst Lewis acid-base pair catalyst is composed of PR3 and organoborane; the method is simple to operate and low in production cost, can perform ring-opening polymerization reaction of the epoxy compound at normal temperature to complete preparation of the polyether polymer, greatly reduces energy loss, and is harmless to the environment, safe and environment-friendly.

The invention discloses a method for preparing mesotrione with a stable crystal form. The method comprises the following steps of: using chloroalkane as a denaturant which forms mesotrione with a thermodynamically stable crystal form (crystal form I), and selectively obtaining mesotrione with the stable crystal form from aqueous liquor of mesotrione; and when the thermodynamically stable crystal form I is completely formed, decompressing and distilling to remove chloroalkane in the liquor. The invention simultaneously provides a method for eliminating distillation foam. The method provided by the invention not only ensures generation of stable crystal form of products and guarantees the product quality, but also improves the distillation safety. Meanwhile, in the crystallization process, a lot of seed crystals are not added in advance, and the product obtained is easy to filter, so that the utilization ratio of the equipment is greatly improved, and therefore, the production capacity is improved and the energy consumption is reduced.

The invention relates to an efficient cementitious capillary crystalline waterproofing coating. The coating is prepared from the following raw materials in parts by weight: 40-70% of silicate cement, 12-23% of high-activity master batch, 20-30% of quartz sand, 0.3-1.2% of a catalyst and 1.2-3% of a diffusion agent. According to the invention, active chemical materials are doped into silicate cement and quartz sand which are adopted as base materials so as to prepare a powder material; then the powder material can be mixed with water to prepare slurry which can be coated or sprayed onto the surface of cement concrete, or the powder material can be coated or pressed onto the surface of the cement concrete which is not completely solidified so that the anti-penetrability performance of the concrete is increased; the function mechanism is as follows: the active chemical materials in the waterproofing coating permeate into the inside of the concrete and react with various oxides in the concrete, then water-insoluble crystallines are formed in the concrete and capillary channels are blocked, so that the concrete is compact and fireproof.

The invention discloses a method for preparing mesotrione with a stable crystal form. The method comprises the following steps of: using chloroalkane as a denaturant which forms mesotrione with a thermodynamically stable crystal form (crystal form I), and selectively obtaining mesotrione with the stable crystal form from aqueous liquor of mesotrione; and when the thermodynamically stable crystal form I is completely formed, decompressing and distilling to remove chloroalkane in the liquor. The invention simultaneously provides a method for eliminating distillation foam. The method provided by the invention not only ensures generation of stable crystal form of products and guarantees the product quality, but also improves the distillation safety. Meanwhile, in the crystallization process, a lot of seed crystals are not added in advance, and the product obtained is easy to filter, so that the utilization ratio of the equipment is greatly improved, and therefore, the production capacity is improved and the energy consumption is reduced.

The present disclosure provides a method and device for preventing blockchain forks. The method includes: selecting s consecutive blocks B n to B n+s ; created by block B n Node A n Generate for block B n key pair; node A n Continuously generate block B in the blockchain n+1 to B n+s remain active during the process until block B in consecutive s blocks n+s Become an immutable block; in response to block B in consecutive s blocks n+s Become an immutable block, use the private key PK' n for block B n+s Signing; Response to block chain subsequent generation of block B m , put the signature in block B m in; by creating s blocks B n to B n+s The nodes of each block in the block perform the above steps, thereby forming multiple backward links related to the block size of the blockchain; the newly added nodes used to create new blocks judge the area according to the number of backward links Whether the block chain is forked.

The invention discloses a toxic ligand free electrochemistry regulated atom transfer radical polymerization method. According to the method, under an electrochemical effect, no any toxic ligand is used, and five reactions raw materials namely monomers, a catalyst, an initiator, an electrolyte, and a solvent are mixed to make the monomers carry out atom transfer radical polymerization reactions to generate corresponding polymers. The reaction raw materials and reaction conditions of atom transfer radical polymerization reactions are improved; during the process of atom transfer radical polymerization reactions, an electrochemical effect is applied; the problem that a low valent transition metal catalyst is difficult to store and process in an atom transfer radical polymerization system is effectively solved; the shortages such as toxic ligand, pricy reducing agent, strong toxicity, volatility, and the like, are overcome, and the damage to the environment and the reaction cost are both reduced.

The invention discloses a manufacturing method for a nano-platinum-titanium electrode. Firstly, a pure titanium electrode substrate through surface treatment is immersed in a certain concentration ofchloroplatinate ion-containing solution, and a two-electrode system is established and micro-voltage is applied; then, a reductant is added to the solution, and in-situ reduction is carried out on thepure titanium electrode substrate and platinum nanoparticles are deposited; and finally, through high-temperature treatment, a nano-platinum-titanium electrode is obtained. The manufacturing method has the advantages that the manufacturing is fast, the system is simply and conveniently formed, the platinum nano adsorption capacity is strong, the nano platinum is firmly bonded with the electrode substrate, and the manufactured nano-platinum-titanium electrode can withstand strong acid and other harsh environments.

The invention provides a method for polymerizing reverse atom transfer radicals under activation action of alkali on halohydrocarbon. According to the polymerization method, no organic ligand or radical initiator is used, a polymerization system comprises vinyl monomers, halohydrocarbon, alkali and a high-valence transition metal catalyst, and monomers are subjected to a reverse atom transfer radical polymerization reaction under the activation action of alkali on halohydrocarbon to produce a polymer with narrow molecular weight distribution. With the adoption of the polymerization method, no radical initiator or a low-valence transition metal catalyst sensitive to water and oxygen is used, and meanwhile, the defects of high price and environmental pollution due to the fact that toxic and volatile organic compounds are used as ligands in existing atom transfer radical polymerization methods are overcome.

The invention relates to a hollow structure magnesium potassium titanate whisker material and a preparation method thereof. The technical plan is: mix titanium-containing raw materials, magnesium-containing raw materials and binders, shape them, grind them after heat treatment, and obtain material A with a particle size of 0.088~1mm and material B with a particle size of less than 0.088mm; The titanium raw material and the binder are mixed, shaped, and ground after heat treatment to obtain material C with a particle size of less than 0.088mm; then, material A, material B, material C and potassium-containing raw material are mixed, and ground after heat treatment to obtain powder and abrasive material; finally Add material C, potassium-containing raw materials and water to the grinding material, stir, press into a green body, dry the green body, wash with water after heat treatment, filter, and dry to obtain a hollow structure magnesium potassium titanate whisker material. The whisker outer diameter of the hollow structure magnesium potassium titanate whisker material prepared by the present invention is 0.1-5 μm, the inner diameter of the whisker is 0.05-1 μm, and the length of the whisker is 3-30 μm. High crystallinity and uniform size.

The invention relates to a fiber-reinforced mullite ceramic matrix composite material and a preparation method thereof. The preparation method includes the following steps: (1) the step of preparing an impregnating precursor: mixing alumina powder, silica sol and a dispersant, and ball-milling to obtain an impregnating precursor; the silica sol has a solid content of 15-30wt% Acidic silica sol; the particle size gradation of the alumina powder is as follows: the powder smaller than 100nm accounts for 5-15wt%, the powder with 100nm-200nm accounts for 70-80wt%, and the powder larger than 200nm accounts for 5-15wt% ; The molar ratio of the alumina in the alumina powder and the silica in the silica sol is 3:2-4:2; (2) the step of vacuum impregnation; (3) the step of drying; (4) the step of sintering; and (5) the step of densification. The preparation method has lower requirements on the weaving of fibers and lower cost, and can obtain a mullite ceramic matrix composite material with excellent performance.

The invention belongs to the technical field of electrode material production, and in particular relates to a composite material of chromium oxide / carbon fluoride / highly conductive substance for lithium primary batteries. The premix of the active substance is the doping material, and the reaction raw material and the doping material are sequentially ball-milled and sintered with oxygen; the present invention selects carbon fluoride and high-conductivity substances as the doping material, and uses chromium trioxide as the preparation of chromium The raw material of oxide, the doping material is introduced in the whole process of chromium oxide formation, so that CrO 3 While undergoing liquefaction and decomposition reaction process at high temperature, carbon fluoride and highly conductive substances can be uniformly doped on the surface of chromium oxide or embedded in the interior, which effectively improves the first discharge specific capacity and rate performance of chromium oxide.