65results about How to "Preparation conditions are not harsh" patented technology

The invention provides a high-temperature resistant one-component isotropic conductive adhesive and a preparation method thereof. The one-component isotropic conductive adhesive capable of resisting the high temperature of 180 DEG C for a long time is prepared by adding silver nano-wire as the conductive filler to an epoxy resin matrix and adding core-shell structure toughening epoxy resin and poly-functional epoxy resin as modifiers. The conductive adhesive comprises the following components by the mass percentage: 10% to 15% of matrix epoxy resin, 62% to 65% of silver nano-wire, 3.5% to 5.5% of poly-functional epoxy resin, 6% to 10% of core-shell structure toughening epoxy resin, 0.4% to 0.6% of gas-phase silicon dioxide, 0.6% to 1.0% of toughening diluting agent, 0.3% to 0.4% of coupling agent, 9% to 15% of curing agent and 0.1% to 0.2% of curing accelerator. The invention has the advantages of simple preparation method, good controllability, high material availability and mild preparation condition.

The invention relates to a heat-conducting adhesive, particularly a silver-plated carbon nanotube heat-conducting adhesive and a preparation method thereof. One-dimensional silver-plated carbon nanotubes are used as a heat-conducting filler of the heat-conducting adhesive to fully take the advantage of the fiber structure of the nanowire, so that a heat-conducting network can be well formed in the resin matrix of the heat-conducting adhesive. The composite heat-conducting adhesive has the advantages of low price, simple technique and simple formation process, can well satisfy the requirements for electronic and electric materials; and the excellent corrosion resistance of the silver-plated carbon nanotubes can greatly enhance the ageing resistance of the electric-conducting adhesive.

The invention discloses a laser engraved ceramic coating anilox roller and a production method thereof. The laser engraved ceramic coating anilox roller comprises a roller body, a transition layer and a working layer; the transition layer is a metal combined bottom layer, and the working layer is a ceramic coating layer; the transition layer is fixed onto the roller surface of the roller body, and the ceramic coating layer is fixed to the transition layer. The production method includes the steps of roller body cleaning, roller body surface pretreatment, metal combined bottom layer spray coating, ceramic working layer spray coating, spray coated ceramic working layer abrasive machining and ceramic working layer laser engraving machining. The laser engraved ceramic coating anilox roller has the advantages of long service life and high printing accuracy. The production method is fewer in process steps and not demanding in production conditions, can ensure the technical effect of the ceramic anilox roller, and is applicable to industrial batch production.

The invention relates to semiconductor quantum dot doped polymer dispersed liquid crystal containing Ag nanoparticles and a preparation method thereof. The semiconductor quantum dot doped polymer dispersed liquid crystal containing the Ag nanoparticles is prepared from the following components in parts by mass: 1 to 5 parts of semiconductor quantum dots, 20 to 74 parts of a photosensitive polymer,20 to 78 parts of nematic liquid crystal, 1-5 parts of a photoinitiator, and 0.5 to 1.5 parts of Ag nano particles. The invention also relates to an application of the semiconductor quantum dot dopedpolymer dispersed liquid crystal containing the Ag nanoparticles in a random laser. The semiconductor quantum dot doped polymer dispersed liquid crystal containing the Ag nanoparticles has the advantages that the raw materials are simple and easy to obtain;, and the cost is low; the obtained random laser has the advantages of short preparation period, simple preparation process, easy regulation and control of emission wavelength, low production cost, higher intensity of emitted light, low threshold value and the like; and the semiconductor quantum dot doped polymer dispersed liquid crystal containing the Ag nanoparticles has a wide commercial application prospect.

The present invention relates to aromatic organic salt of Sibutramine and its preparation process. The hydrochloride of Sibutramine as initial material is added into water solution of caustic alkali and reacted for some time before ethyl ether extraction and drying to concentrate to obtain white solid free Sibutramine alkali. Organic solution of free Sibutramine alkali and organic solution of ketoacetic acid or similar organic fatty acid are then mixed at room temperature via stirring to react and separate white crystal, which is filtered and dried to obtain the aromatic organic salt of Sibutramine. The salt has excellent diabetes and obesity preventing and treating effect.

The invention provides a preparation method of semi-aromatic polyamide. The preparation method comprises the following steps: adding an aqueous solution of dibasic acid, diamine and fatty alcohol intoa reaction kettle to prepare a semi-aromatic nylon salt, evaporating the alcohol to remove the alcohol, and carrying out polymerizing to obtain the semi-aromatic polyamide. According to the preparation method, based on the characteristic that the long-carbon-chain semi-aromatic nylon salt has low solubility in water or alcohol but good solubility in a mixed solution of alcohol and water, dibasicacid and diamine are used as raw materials, the long-carbon-chain semi-aromatic nylon salt is prepared in the aqueous solution of fatty alcohol, then a distillation temperature is controlled, the fatty alcohol is removed through evaporation before a polymerization reaction temperature is reached, and heating is continued and polymerization is performed to obtain the semi-aromatic polyamide, thereby avoiding proportion imbalance caused by the volatile loss of diamine in a high-temperature environment.

The invention belongs to the technical field of preparation for a titanium coating, and relates to a preparation method for a titanium coating or a titanium alloy coating. The preparation method comprises the following specific steps of: (1) granulating titanium hydride to prepare a titanium hydride powder having a grain diameter ranging from -100 meshes to +400 meshes, wherein the titanium hydride powder ia taken as a raw material, or the mixed powder of the titanium hydride powder and titanium or titanium alloy is used as a raw material, the mass of the titanium hydride powder occupies more than 60% of mass of the mixed powder, and the grain diameter of the mixed powder ranges form -100 meshes to + 400 meshes; and (2) spraying the raw material in the step (1) on a matrix to obtain the titanium coating or the titanium alloy coating. The method can be performed in an atmospheric environment; and moreover, large-area spray of the titanium coating or the titanium alloy coating can be realized.

The invention belongs to the technical field of material preparation, in particular relates to a diamond-filled isotropical high-performance heat-conductive adhesive and a preparation method thereof. The preparation method comprises the following steps of: firstly, mixing epoxy resins with an epoxy toughness modifier by mechanical stirring for 20 minutes at the rate of 1,500 r/min; secondly, adding a heat-conductive diamond filler into the obtained product under the stirring state, adding a modifier and a diluent on the filler surface, and continuously stirring for 15 minutes after the addition process is over; thirdly, adding a curing agent and a curing accelerator into the mixture after uniform mixing, performing mechanical stirring for 5 minutes, and transferring the mixture into a high-speed shear mixing machine for mixing for 30 seconds at the rate of 2,000 r/min; and fourthly, obtaining uniformly mixed jelly, namely the heat-conductive adhesive, after performing repeated mixing for three times in the high-speed shear mixing machine. The heat-conductive adhesive prepared by the method provided by the invention has higher heat conductivity of 10-16w/ (m.k), and the shear strength of the adhesive can be improved.

The invention provides a preparation method of an Er<3+> and Yb<3+> co-doped YOF red up-conversion fluorescent material. The preparation method is low in heat treatment temperature, relatively wide in temperature adjusting range and simple in process. The preparation method specifically comprises the following steps: mixing yttrium nitrate, ytterbium nitrate and erbium nitrate according to a general formula mixing ratio; taking isopropanol, ethanol and water as a solvent, adding trifluoroacetic acid into the solvent, and stirring uniformly to obtain a transparent sol A; drying the transparent sol A to obtain a colloidal substance for heat treatment; heating from room temperature to 350-600DEG C, keeping the temperature for a certain period of time, cooling to the room temperature along with a furnace, and grinding to obtain Er<3+> and Yb<3+> co-doped YOF powder; or coating the transparent sol A on a glass or silicon chip substrate by virtue of a rotary coating method, drying in the air for 15-30 minutes at room temperature, then drying in a drying box at 100DEG C, then putting into a high-temperature furnace to perform annealing treatment, heating to 350-600DEG C according to a heating rate of 1-10DEG C/min, and performing heat preservation and cooling to obtain an Er<3+> and Yb<3+> co-doped YOF fluorescent thin film.

The invention aims to solve the technical problems of overcoming the defects of high resistivity, low ductility and poor adhesion between a conductive layer and a basal body of the transparent conductive film in the prior art and provide a novel transparent conductive film and a preparation method thereof. The novel transparent conductive film comprises the following components in percentage by mass: 25-35 percent of hydrogenated bisphenol A epoxy resin, 22-25 percent of epoxy resin active diluting agent, 0.5-1.5 percent of anti-ultraviolet (UV) additive, 20-30 percent of hydrogenated alicyclic amine, 2.5-4 percent of modified amine type curing promoter and 12-27 percent of conductive filler. The transparent conductive film is low in both surface resistivity and size resistivity, can be made into thin films of different thickness, and has the advantages of high transparency, high conductivity, high adhesion strength and the like; and the preparation method has the advantages of simple preparation method, readily available raw materials and non-severe preparation conditions.

The invention relates to antibacterial crosslinked nanoparticles and a preparation method thereof. The method comprises the steps of firstly, adopting solution polymerization to synthesize poly [2-(N,N-dimethyl amino)ethyl methacrylate] (PDMAEMA) under the regulation of a reversible addition fragmentation chain transfer (RAFT) agent-CPND; then, under the acidic condition, taking the PDMAEMA as a macromolecule RAFT agent, and adding oil-soluble monomer methyl methacrylate (MMA) and a crosslinking agent-ethylene glycol dimethacrylate (EGDMA) in a semi-continuous charging way to prepare crosslinked nano emulsion for soap-free antibacterial particles. After that, the nanoparticles are enabled to be subjected to quaternization, and the good antibacterial property of the nanoparticles is verified by taking gram-negative bacteria escherichia coli as an experimental strain and using a spread-plate method.

The invention relates to quinoline or quinazoline compound as well as a preparation process and application thereof. The structural formula is shown in the description. The quinoline or quinazoline compound can inhibit the activity of PFKFB3 in tumor cells, effectively block activation of key enzymes during a glycolysis process, and inhibit energy supply for tumor cells.

The invention relates to a diaryl ether compound , a preparation method and application thereof, wherein the diaryl ether compound has the following structural formula: (the formula is shown in the description), wherein, -X- is CH- or -N-; =R1,-R2,-R3 are independently selected from one kind of H-,-F,-Cl,-Br, alkoxy, aryl, aryloxy, N, N-Dialkylamino, N-Alkyl-N-Acylamino, pyridyl, imidazolyl, pyrazolyl, furyl, pyrrolyl, morpholinyl, N-Alkyl piperazinyl, piperidinyl and tetrahydropyrrolyl. The diaryl ether compound has the advantage of inhibiting the activity of a PFKFB3 in the tumor cells, effectively blocking the activation of the key enzyme during the glycolysis process, thereby blocking energy supply from the energy source of the tumor cells, and providing a new medicament for the effective treatment of the tumor diseases.

The invention relates to the technical field of inorganic cementing material products, in particular to an inorganic cementing material product and a preparation method thereof. The inorganic cementing material product comprises the following components in parts by weight: 65-90 parts of an inorganic cementing material and 10-35 parts of plastic powder, the preparation method of the inorganic cementing material product comprises the following steps: stirring and mixing an inorganic cementing material, plastic powder and water to obtain a mixture; the mixture is cured and formed according to a preset shape to form a prefabricated product, and the thickness of the prefabricated product is smaller than or equal to 20 mm under the preset shape; heating the prefabricated product at a specified temperature, wherein the specified temperature is used for enabling the plastic powder in the prefabricated product to be in a molten state; and cooling the heated prefabricated product to obtain the inorganic cementing material product with the thickness of less than or equal to 20mm. According to the inorganic cementing material product and the preparation method thereof, the low cost can be ensured, the preparation conditions are not harsh, and the thinner inorganic cementing material product with good toughness can be prepared.

The invention discloses a binuclear vanadium catalyst. The structural general formula of the catalyst is described in the descriptions of the invention. In the structural general formula, the structural formula of Linker is one of the following formulas described in the descriptions of the invention; R1, R2, R3, R4, R5, R '1, R' 2, R '3, R' 4 and R '5 are one or more of hydrogen atoms, alkyl groups, fluorine atoms, bromine atoms and chlorine atoms. The binuclear vanadium catalyst comprises electron withdrawing groups which can be used for ring-opening metathesis polymerization reaction of monomers with weak catalytic reaction capacity and other cycloolefin monomers; the number of polar groups can be effectively adjusted, the topological structure of a polymer can be effectively controlled,and a new strategy is provided for synthesizing functionalized polyolefin.

The invention discloses a modified soft carbon negative electrode material, a lithium ion battery, a negative electrode material and a preparation method. The preparation method of the modified soft carbon negative electrode material comprises the steps of sequentially carrying out activation treatment, washing, drying and heat treatment on a soft carbon carbonization precursor material, wherein the soft carbon carbonization precursor material is obtained by carbonizing a soft carbon precursor material at the temperature of 1250-1450 DEG C; the mass ratio of the soft carbon carbonization precursor material to an activating agent in the activating treatment process is 100: (3-15); the activating agent is an alkali metal-containing alkaline inorganic compound and/or chlorine-containing inorganic salt; and the temperature of the heat treatment is 500-700 DEG C. According to the modified soft carbon negative electrode material disclosed by the invention, the structure of the soft carbon isimproved, the amorphous degree of the soft carbon structure is improved, pore lithium storage sites of the soft carbon material are increased, lithium intercalation and deintercalation channels are increased, and the obtained modified soft carbon negative electrode material is high in initial reversible capacity, initial coulombic efficiency and capacity retention ratio after 100 cycles.