20results about How to "Good performance and stability" patented technology

The invention discloses a photocuring water transfer printing ink, a preparation method and a use method, and relates to the technical field of inks, the ink is composed of the following components by weight: 25-35 parts of propylene isophthalate resin; 20 to 35 parts of alkoxy modified polyester acrylate; 10 to 20 parts of propylene oxide neopentyl glycol diacrylate; 10 to 20 parts of a monomer; 6 to 10 parts of a photoinitiator; 20 parts of pigment; and 5-10 parts of a filler. The photocuring water transfer printing ink can adapt to curing in modes of LEDs, traditional UV mercury lamps and the like, is good in hydrophobicity, and has good wear resistance, heat resistance, folding resistance and adhesive force.

The invention relates to the technical field of rubber bonding, in particular to a rubber bonding accelerant and a preparation method thereof.The rubber bonding accelerant is prepared from a silane coupling agent KH560, a modifier prepared by doping whiskers, a stable reinforcing agent and chitosan liquid; wherein the substance mass ratio of the silane coupling agent KH560 to the modifier blended by the doped whiskers to the stability-resistant reinforcing agent to the chitosan liquid is 2: (5-7): (3-4): 9. According to the rubber adhesion promoter disclosed by the invention, the silane coupling agent KH560 is matched with the modifier prepared by doping the whisker and the stability-resistant reinforcing agent, meanwhile, the chitosan liquid is added for blending and matching, and the modifier prepared by doping the whisker and the stability-resistant reinforcing agent are matched with each other; the adhesion promoter obtained by common synergism enhances the coordination of strength, elongation and wear resistance of a product in a rubber system, and the rubber product has excellent performance stability under cold-heat cycle aging and corrosion resistant conditions.

The invention provides a super-strong weather-resistant rock plate and steel grit double-component ceramic tile back adhesive and a preparation method thereof, the back adhesive comprises a powder component and an emulsion component, the powder component comprises Portland cement, quartz sand, carborundum, a water reducing agent, latex powder and the like, and the emulsion component comprises an acrylic emulsion, a dispersing agent, a defoaming agent, a coalescing agent, deionized water and the like. Wherein the water reducing agent can be a polycarboxylic acid water reducing agent or a naphthalene-based high-efficiency water reducing agent; the latex powder is prepared from vinyl acetate-ethylene copolymerized rubber powder, styrene-acrylate and vinyl acetate homopolymerized rubber powder according to a specific proportion. And the dispersing agent, the defoaming agent and the coalescing agent have various choices. The preparation method comprises the following steps: respectively preparing the powder component and the emulsion component, mixing the powder component and the emulsion component in proportion, and carrying out ultrasonic-assisted stirring. The ceramic tile back adhesive disclosed by the invention has super-strong weather resistance, good bonding strength and chemical corrosion resistance, is suitable for various building scenes, and provides a reliable solution for ceramic tile adhesion.

The present application relates to the field of coatings, and in particular to a petroleum pipeline repair coating composition, and its preparation method and application. The raw materials of the petroleum pipeline repair coating composition, in parts by mass, are: 70 to 90 parts of composite epoxy resin, 20 to 30 parts of filler particles, 3 to 5 parts of accelerator, 4 to 6 parts of curing agent, 1 to 2 parts of leveling agent, 1 to 2 parts of defoaming agent, 1 to 1.5 parts of antioxidant, and 15 to 30 parts of functional additives. The petroleum pipeline repair coating composition prepared in the present application can maintain excellent adhesion, corrosion resistance, and wear resistance while having good waterproof and aging resistance properties, meeting the performance requirements for repair coatings in complex petroleum pipeline repair environments, and thus has excellent application prospects.

A wear-resistant carbon fiber synchronous belt and a preparation method thereof, comprising a synchronous belt skeleton and a synchronous belt film wrapped around the synchronous belt skeleton, wherein the synchronous belt film is made of the following raw materials: chlorosulfonated polyethylene, epoxidized natural rubber, methyl vinyl phenyl silicone rubber, cellulose nanocrystals, inorganic fillers, 1,3-bis(oxiranylmethyl)-5-(2-propylene)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 2,4,6-trivinylcycloboroxine, 2,6-diamino-9H-fluorene-9-one, 2,2-bis[4-(4-aminophenoxy)phenyl]-1,1,1,3,3,3-hexafluoropropane, 1,4-diacryl-1,2,3,4-tetrahydro-6,7-dimethylquinoxaline, coupling agent, vulcanizing agent, antioxidant, anti-scorch agent and lubricant. The synchronous belt has high strength, good wear resistance, excellent heat aging resistance and cold resistance.

The invention relates to the technical field of PETG polyester materials, and particularly discloses an impact-resistant modified PETG polyester material and a preparation method thereof, and the impact-resistant modified PETG polyester material comprises the following components: 50-80 parts of PETG resin, 10-30 parts of an impact-resistant modifier, 5-15 parts of a wear-resistant reinforcing agent, 1-5 parts of a stabilizer, 1-3 parts of a lubricant, 2-8 parts of a corrosion-resistant additive, and 1-3 parts of an antioxidant. The impact modifier is formed by compounding a methyl methacrylate-butadiene-styrene copolymer, an acrylonitrile-butadiene-styrene copolymer and an ethylene-octene copolymer according to a compounding ratio of 1: 1: 3, and the wear-resistant enhancer is formed by compounding ultra-high molecular weight polyethylene micro powder, nano ceramic particles and polytetrafluoroethylene micro powder. The compounding ratio range is 1: 1: 2. According to the impact-resistant modified PETG polyester material and the preparation method thereof, the impact-resistant modified PETG polyester material has relatively good impact resistance, wear resistance, corrosion resistance and oxidation resistance.

The invention discloses a modified polypropylene film and application thereof in a composite current collector. The modified polypropylene film comprises the following raw materials in parts by weight: 80 parts of polypropylene resin, 10-20 parts of linear low-density polyethylene, 10-15 parts of hyperbranched polypropylene, 20-30 parts of polyvinylidene fluoride resin, 1-3 parts of a compatibilizer, 5-8 parts of other auxiliary agents, 3-5 parts of 1,3-bis(oxiranylmethyl)-5-(2-propenyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 1-3 parts of 1,1'-diaminoferrocene, 2-4 parts of 2,2'-bis(trifluoromethyl)diaminobiphenyl, 3-5 parts of (3,6-diaminoacridine-9-yl)boric acid, 0.8-1.2 parts of quaternary ammonium salt-based calix[3]carbazole and 10-15 parts of fillers. The film has excellent resistance to electrolyte corrosion, good heat resistance, good adhesion to the metal layer and flame retardancy, and sufficient puncture resistance.

The invention discloses a heat-insulating film and a preparation method thereof. The heat-insulating film comprises, from top to bottom, an embossed release paper, a heat-insulating layer and a back adhesive layer; the heat-insulating layer contains hollow glass microspheres, hydrophilic silica aerogel powder, nano ATO dispersion slurry and hyperbranched polyurethane acrylate composited with an auxiliary agent, and further contains 1,2,2-trifluorovinyl triphenylsilane / N-vinyl carbazole / 2-[3-(2H-benzotriazole-2-yl)-4-hydroxyphenyl]ethyl 2-methacrylate / glycidyl methacrylate copolymer, 2,4-diamino-6-diallylamino-1,3,5-triazine, 2,4,6-trivinyl boroxine, 2,6-bis(oxirane-2-methyl)-1,2,3,5,6,7-hexahydropyrrolo[3,4-f]isoindole-1,3,5,7-tetraketone and ethylene glycol dimethacrylate. The film has excellent flame retardancy, mechanical properties, aging resistance and heat insulation.

This invention discloses a high-strength, high-elongation, low-hardness natural rubber and its preparation method. By weight, the high-strength, high-elongation, low-hardness natural rubber comprises the following components: 100 parts natural rubber, 1.5-3 parts crosslinking agent, 0.8-2 parts accelerator, 10-20 parts reinforcing agent, 5-15 parts softener, 1-3 parts antioxidant, and 3-8 parts activator. The high-strength, high-elongation, low-hardness natural rubber has a tensile strength ≥20 MPa, an elongation ≥700%, and a Shore A hardness of 35-45. Under normal operating conditions of -20℃ to 80℃, the fluctuation range of the tensile strength and elongation is controlled within ±5%, and the Shore A hardness fluctuation is ≤±2. This invention solves the technical problem of achieving a balance between high strength, high elongation, and low hardness in existing natural rubber formulations. The formulation components of this invention are widely available, the preparation process is simple, and the production cost is controllable. It can be widely applied in multiple fields and has extremely high practical value and promising prospects for promotion.

This invention relates to a medium-high fluorine, low-alumina slag system for electroslag remelting S-06 stainless steel, belonging to the field of electroslag special metallurgical technology. It addresses the problems of high fluorine content, significant pollution, and poor uniformity of steel ingots produced by existing electroslag remelting slag systems. The mass percentage of each component in the medium-high fluorine, low-alumina slag system of this invention is as follows: CaF2: 56.4%~57.3%, Al2O3: 11.5%~14.9%, CaO: 19.7%~20.2%, MgO: 8.0%~10.0%, SiO2: 0.9%~1.1%, C: 0.04%~0.06%, with the remainder being impurities. The slag system of this invention exhibits good metallurgical effects; when using this slag system for electroslag remelting S-06 stainless steel, the resulting steel ingots show uniform elemental distribution and a uniform slag coating.

A contact system includes a contact support and a moving contact. The moving contact has moving contacts at both ends that mate with stationary contacts. The contact support has two raised mounting protrusions on the side away from the stationary contacts, and a clearance notch between the two mounting protrusions. Each of the two mounting protrusions of the contact support has at least one contact spring, and the contact springs on the two mounting protrusions are respectively connected to the two ends of the moving contact where the moving contacts are located. A changeover switch includes a housing and a contact system. The housing contains a load terminal, a power supply I terminal, and a power supply II terminal. The load terminal is electrically connected to the moving contact. Two stationary contacts are respectively located on the power supply I terminal and the power supply II terminal. In this invention, the contact support has a notch design on the side near the load terminal, and two mounting protrusions are spaced apart for mounting contact springs, saving space and increasing the rotation angle of the contact support.

A method for improving the yield of ethylene-maleic anhydride alternating copolymers involves mixing maleic anhydride, a free radical initiator, and a polymerization catalyst in an organic solvent, then introducing ethylene gas to perform free radical polymerization. The polymerization catalyst is obtained by supporting a heteropoly acid with SiO2 and then activating it. This invention solves the problem of low molecular weight polymers prepared by solvent methods. While reducing reaction pressure and the use of reaction solvents, it increases the molecular weight of the polymer and the yield of the product, reduces the polymer molecular weight distribution, and minimizes side reactions. The prepared ethylene-maleic anhydride alternating copolymer has a number-average molecular weight between 60 and 90 kJ, a molecular weight distribution as low as 1.2, and excellent performance stability. This ethylene-maleic anhydride can be used as a highly efficient binder and dispersant in building insulation and sound insulation materials.

The invention belongs to the technical field of supercapacitor electrode materials, and relates to an all-solid-state supercapacitor based on a CuCo2O4-PDMT composite electrode and a preparation method thereof.The preparation method comprises the steps that copper nitrate and cobalt nitrate serve as metal sources, and a CuCo2O4 bottom layer is prepared through constant-potential electro-deposition-muffle furnace annealing; 2, 5-dimethylthiophene (DMT) is used as a monomer, a PDMT top layer is prepared through cyclic voltammetry electropolymerization, and a CuCo2O4-PDMT composite electrode is formed; polyethylene glycol (PEG) is used as a gel matrix, lithium perchlorate (LiClO4) is used as an ion source, nano TiO2 is used as a reinforcing agent, and the composite gel electrolyte is prepared through'microwave dissolution-ultraviolet curing '. The composite electrode and the gel electrolyte are assembled into the all-solid-state symmetrical supercapacitor, so that the defects of high electrode electron transmission impedance, low gel electrolyte ion conductivity and insufficient cycling stability of the existing all-solid-state supercapacitor are overcome, and the collaborative construction of the composite electrode conductive network and the gel electrolyte ion channel is realized; and the performance limitation of traditional single component optimization is broken through.

This invention discloses a surface coating modification process for fast-charging graphite anode materials, belonging to the field of surface coating modification of graphite anode materials. The process includes the following steps: Graphite pretreatment: Natural spherical graphite or artificial graphite is selected as raw material and ball-milled for 3-8 hours. An appropriate amount of dispersant can be added to prevent graphite particle agglomeration. The ball-milled graphite particles are then acid-washed using a 10%-30% hydrochloric acid or sulfuric acid solution. This invention effectively removes impurities and defects from the graphite surface and increases the specific surface area and surface active sites of the graphite particles by precisely controlling the graphite pretreatment conditions, such as appropriate ball-milling time, acid concentration, and temperature. Simultaneously, a gradient coating structure is adopted, with multiple coatings using phenolic resin ethanol solutions of different mass fractions. Combined with conductive additives such as carbon nanotubes and graphene, as well as the introduction of metal salts, a more complete conductive network is constructed.

The utility model provides a shock insulation support which comprises a support body, an upper connecting plate located on the upper end face of the support body and a lower connecting plate located on the lower end face of the support body. The shock insulation support further comprises steel U-shaped pieces evenly distributed on the periphery of the support body, the steel U-shaped pieces are provided with the opening ends located on the head portions and the closed ends located on the tail portions, the two sides of the opening ends are connected with the upper connecting plate and the lower connecting plate respectively, and therefore the horizontal rigidity of the shock insulation support can be enhanced through the elastic stages of the steel U-shaped pieces; the energy consumption can be improved through plastic deformation of the steel U-shaped piece, and the energy consumption capacity is high; by using the steel U-shaped piece, the use amount of the pencil lead can be greatly reduced, even the pencil lead is not used, the cost is lower, and the environment-friendly requirement is met; due to the existence of the steel U-shaped piece, the shock insulation support not only can effectively counteract impact load of an earthquake and dissipate earthquake energy, but also can effectively counteract disturbance of wind load and slight vibration to the shock insulation support, and is good in performance stability.

The present invention belongs to the field of resistance measurement technology, and specifically relates to a method for sorting heating tubes for diamond synthesis and a method for measuring the resistance of heating tubes. The method for sorting heating tubes for diamond synthesis of the present invention includes a method for measuring the resistance of heating tubes. When measuring the resistance of the heating tube, a plurality of wire conduction positions distributed along the circumferential direction are set on the first end and the second end of the heating tube. The wire conduction positions on the first end correspond to the wire conduction positions on the second end one by one, and the wire conduction positions on the first end and the wire conduction positions on the second end corresponding to each other are on a straight line extending along the axial direction of the heating tube. By measuring the resistance of the heating tube at different wire conduction positions and calculating the average value, the accurate resistance of the heating tube is obtained, the heating tubes are sorted according to the resistance of the heating tubes, and the heating tubes with similar resistances are used in the synthesis process of the same batch of diamond products, thereby improving the stability in the synthesis process and improving the yield of the synthesized products.

The invention discloses a production method of a high-strength forged shaft, and relates to the technical field of forged shaft production and manufacturing, the production method comprises the following steps: S1, pretreatment; step S2, closed rolling extrusion; s3, finish forging is conducted; s4, performing heat treatment again; and step S5, detecting. The production method of the high-strength forged shaft is simple and easy to implement, low in energy consumption, high in efficiency, small in dependence on equipment and suitable for continuous large-scale production; the forged shaft manufactured through the production method is high in mechanical strength, sufficient in toughness, good in performance stability and long in service life.

The invention relates to the field of material engineering, in particular to an environment-friendly material for repairing a pavement inspection well seat and a use method of the environment-friendly material. A compound A, a compound B, nano calcium carbonate and an antioxidant which are mixed in proportion are fully stirred for 8-10 minutes on a construction site to be uniformly dispersed; and then pouring into a special mold or directly smearing on the repaired part of the inspection well seat with the smearing thickness of 2-4cm, and ensuring that the material is tightly attached to the surface of the original inspection well seat without bubbles and gaps.

The invention discloses a super-resolution photoetching device based on a topological photonic crystal and a method thereof. The device is sequentially provided with a transparent substrate, a mask layer, a planarization film layer and a photonic crystal structure layer from top to bottom, the photonic crystal structure layer is formed by combining sub-unit cells in different dielectric film layer stacking modes, and the photonic crystal multilayer film formed by combining the sub-unit cells has a topological non-trivial state. According to the device, a photon energy band is regulated and controlled by using subunit cells, and a spatial spectrum transmission pass band is formed. According to the spatial frequency spectrum filtering function of the photonic crystal multilayer film, high-frequency diffracted waves of the same level are efficiently transmitted, and can be transmitted to the photosensitive layer through a large working distance to form a super-resolution array pattern of a deep sub-wavelength scale. In actual production, the topological non-trivial state can reduce the requirements of the device preparation process. Moreover, the photoetching device with the large working distance is wider in application range, the operability of super-resolution photoetching is improved, and the service life of the photoetching device is prolonged.

This invention relates to a low-fluorine, high-calcium desulfurization slag system for electroslag remelting S-06 stainless steel and its application method, belonging to the field of electroslag special metallurgical technology. It addresses the problems of high fluorine content and pollution in existing electroslag smelting slag systems, resulting in poor uniformity of the prepared steel ingots and uneven, thick slag skin. The mass percentage of each component in the low-fluorine, high-calcium desulfurization slag system of this invention is as follows: CaF2: 38.3%~42.1%, Al2O3: 23.2%~24.8%, CaO: 30.9%~32.8%, MgO: 1.0%~5.0%, SiO2: 0.8%~1.0%, C: 0.07%~0.1%, with the remainder being impurities. The slag system of this invention exhibits good metallurgical effects; when using this slag system for electroslag remelting S-06 stainless steel, the resulting steel ingots have a uniform elemental distribution and a uniform slag skin.