102results about How to "Barrier erosion" patented technology

The invention discloses a phytic-acid type gas-phase antirust masterbatch, and a preparation method and application thereof. The antirust masterbatch comprises the following components by weight: 30 to 50% a compound antirust agent, 40 to 60% parts of carrier plastic and 10 to 20% parts of an additive, wherein the compound antirust agent is prepared by mixing sodium benzoate, phytic acid, triethanolamine borate and monoethaneamine benzoate according to a mass ratio of 1.0-1.5: 2.5-3.2: 2.0-3.0: 1.0-1.3, and the additive is prepared by mixing sodium silicate, silicon dioxide, octadecanamide and an antioxidant 1076 according to a mass ratio of 1.0-1.3: 5.0-6.5: 2.5-3.3: 0.8-1.1. According to the invention, a strong chelating agent--alkaline phytic acid is used as a gas-phase corrosion inhibitor; triethanolamine borate is used as the additive; and the compound antirust agent has good dispersion and antirust effects and certain polarity, can penetrate the carrier plastic and volatilize to the surface of wrapped metal so as to form a protective film to block erosion by external corrosion substances, and is also exempt from frost precipitation due to incompatibility with a carrier caused by excessively-strong polarity of the compound antirust agent.

The invention relates to a low-moisture-absorption long-term heat-resistant aging-resistant polyamide composition and a preparation method thereof. The polyamide composition is prepared from the following raw materials in percentages by weight: 20-55% of thermoplastic polyamide resin, 5-30% of semi-aromatic polyamide resin, 15-60% of glass fiber, 1-10% of a blocker, 0.1-1% of a thermal aging additive and 0.1-30% of other additives. Compared with the prior art, the semi-aromatic polymer is added into the composite system, the moisture-absorption property of a matrix can be significantly decreased due to the high steric-hindrance effect of the composite system; in addition, because of the presence of benzene rings, characteristics of good barrier property and heat resistance and retention are achieved and the polyamide composition also has the advantages of low moisture absorption, very excellent mechanical strength, heat resistance, aging resistance and the like.

The invention provides a flexible substrate, comprising a first film layer, a second film layer and a third film layer which are laminated in sequence, wherein the first film layer and the third filmlayer are organic polymer films doped with nano particles selected from at least one substance of titanium oxide, zinc oxide or silicon oxide; and the second film layer is an inorganic film. The invention also provides a preparation method of the flexible substrate and a flexible display device including the flexible substrate. By doping nanoparticles in the first film layer and the third film layer of the flexible substrate, ultraviolet rays during laser peeling can be effectively absorbed or reflected, thereby preventing laser from causing damage to the thin film transistor and the OLED module on the other side of the flexible substrate.

The invention discloses an insulation processing method of an MgB2 wire strip. The insulation processing method of the MgB2 wire strip includes: firstly, weaving glass fiber on the surface of the MgB2 wire strip to obtain the MgB2 wire strip coated with woven fabric on the surface; secondly, processing the MgB2 wire strip coated with woven fabric on the surface by going through a paint box provided with insulating paint to obtain the MgB2 wire strip dipped with the insulating paint; thirdly, drying the MgB2 wire strip dipped with the insulating paint to obtain the MgB2 wire strip coated with the insulating paint; fourthly, winding the MgB2 wire strip coated with the insulating paint into a cake; or winding the MgB2 wire strip coated with the insulating paint into a magnet coil of requiredspecification; and fifthly, performing heat treatment for the cake or the magnet coil in a heat treating furnace. Mechanical strength and thermal conduction property of the MgB2 wire strip can be improved after the MgB2 wire strip is woven through the glass fiber and dipped by the insulating paint, and mutual bonding among sheathes caused by thermal expansion of the MgB2 wire strip in the thermaltreatment so as to influence engineering practical application is avoided.

The invention provides a post-cutting passivation method of a silicon-based semiconductor device and the silicon-based semiconductor device, and relates to the technical field of semiconductor devices. The post-cutting passivation method of the silicon-based semiconductor device comprises the following steps: cutting a preset area of the silicon-based semiconductor device by using a cutting process to form a first surface related to the preset area; smoothing the first surface to adjust the surface morphology of the first surface, so that the height difference between bulges and recesses in anon-edge region on the first surface is less than 20nm; and the smoothed first surface is passivated so as to form a first passivation layer on the first surface. According to the invention, the problem of efficiency reduction caused by cutting of the silicon-based semiconductor device can be reduced or avoided, and the silicon-based semiconductor device with higher efficiency can be obtained.

The invention provides a flexible conductive film which comprises a flexible base layer, a flexible conductive layer and a flexible water vapor barrier layer. The flexible base layer, the flexible conductive layer and the flexible water vapor barrier layer are laminated to each other and are combined to form the flexible conductive film. The flexible conductive film is not easy to break, has the advantages of scrape resistance, scratch resistance, bending folding resistance, high light transmittance, low haze, water vapor resistance and the like, can be widely used in a variety of optoelectronic devices, and especially optoelectronic devices with flexible demand and waterproof demand.

The application provides a method for preparing a layered bimetallic hydroxide passivation film in situ. According to the method, the layered bimetallic hydroxide passivation film grows on the surfaceof an iron-based substrate in situ in one step by utilizing a hydrothermal method and in combination with urea decomposition; a hydrothermal reaction is performed on the iron-based substrate obtainedby pretreatment and a reaction solution containing urea, a divalent metal nitrate, and a trivalent metal nitrate to grow the layered bimetallic hydroxide passivation film; the preparation method is simple in technology; further, the thickness of the passivation film can be controlled by controlling a reaction time and a reaction temperature; thus, the anti-corrosive protection of a reinforcing steel bar is achieved; the excessive pretreatment does not need to be performed on the reinforcing steel bar in a reaction process; the preparation of the layered bimetallic hydroxide passivation film can be easily realized by adopting a one-step in-situ synthesis urea decomposition hydrothermal method; and the method is simple, convenient, easy to operate, energy-saving, environment-friendly, further, low in cost, and suitable for wide industrial production.

The invention provides a steel-concrete mixing type anti-shearing connecting piece which is applicable to connecting a wave-shaped steel web plate and a concrete top plate. The top of the wave-shaped steel web plate is provided with a hole; the upper part of the hole is respectively welded with one or more combined steel bars along the vertical direction of the two sides of the wave-shaped steel web plate; at the position of a combined face of the wave-shaped steel web plate and the concrete top plate, one horizontal frange plate which is in convex-concave complementation and tight adhesion with the wave-shaped steel web plate is respectively arranged at each one of the two sides of the wave-shaped steel web plate in the vertical direction; the frange plate is provided with a plurality of vertical welding nails; a connection structure above the frange plate stretches into the reinforced concrete top plate connected with the frange plate; and a transverse steel bar in the concrete top plate penetrates through the hole on the wave-shaped steel web plate, and the concrete of the wave-shaped steel web plate is poured. The steel-concrete mixing type anti-shearing connecting piece has the characteristics of an imbedded anti-shearing connecting piece and a frange type anti-shearing connecting piece; steel products are saved, the machining is convenient, the construction is convenient and the anti-shearing strength is high; the strength, the rigidity and the durability of a connecting part are better; and the integrity of the combined part is good, and the social and economic benefits are good.

The invention discloses a highly-heatproof polyamide composition and a preparation method thereof. The composition comprises 25.0-98.0 wt% of polyamide, 0.5-15.0 wt% of epoxy resin, 0.01-3.0 wt% of astabilizer and 0.01-60.0 wt% of a reinforcing agent, or further comprises 0.01-5.0 wt% of a functional assistant, and the sum of the mass percentages of all above raw materials is 100 wt%, the polyamide is semicrystalline polyamide having a melting point of 200 DEG C or above, and the epoxy equivalent of the epoxy resin is 100-2500 g/eq. The polyamide substrate with an amino group at the high endand a carboxyl group at the low end is selected to reduce the generation of free radicals, the high temperature aging resistance of the epoxy resin is used to block oxygen from corroding and thermo-oxidatively aging the polyamide resin, and the strong polarity of the epoxy group improves the compatibility of the polyamide with the reinforcing agent, so the problem that existing polyamide molding compositions have insufficient high-temperature thermal aging property and mechanical properties is solved.

The present invention provides an embedding structure which includes a first and a second substrate. Upper surface of the first substrate has a certain region; a first sealing ring with a first height is located on the upper surface of the first substrate, and is set on peripheral part of the said certain region to connect lower surface of the second substrate; a second sealing ring with a second height which is smaller than the first height is located on the upper surface of the first substrate, and is set on peripheral part of the first sealing ring to form a trench with the first sealing ring together; a sealing colloid is set in the trench. The embedding structure of the present invention can effectively provide adhesion and air tightness, reduce used amount of the sealing colloid, and avoid polluting component region.

The invention discloses a reagent for wet coating of a high-nickel ternary positive electrode material, and belongs to the technical field of lithium ion power batteries for new energy vehicles. The reagent for wet coating of the high-nickel ternary positive electrode material comprises the following raw materials: a metal source and/or a complexing agent and a solvent, wherein the metal source isat least one of a lithium source, an aluminum source, a magnesium source, a titanium source, a manganese source, a nickel source and a phosphorus source; the complexing agent is at least one of CTAB,citric acid and ammonium citrate; and the solvent is at least one of deionized water, ethanol, absolute ethyl alcohol and acetone. The reagent for wet coating coats the surface of a material througha liquid phase reaction, so that the surface of the material is uniformly coated, the circularity is good, and the residual alkali level is low.

The invention discloses a quantum dot and a preparation method thereof. The quantum dot comprises a quantum dot core and a plurality of quantum dot shell layers wrapping the quantum dot core. A metaloxide layer is arranged between the quantum dot core and the adjacent quantum dot shell layer. A metal oxide layer is arranged between the adjacent quantum dot shell layers or on the outermost quantumdot shell layer. According to the invention, the metal oxide layers are generated on the surfaces of the core and the shell of the quantum dot by using the precursor with an oxidation effect, so thatthe core and the shell of the quantum dot are effectively protected, erosion of moisture, oxygen and the like to the core and the shell of the quantum dot is inhibited and the stability of the quantum dot is improved. When the quantum dot film is prepared by using the quantum dot, the quantum dot film still keeps good stability in a high-temperature and high-humidity environment under the condition that a water-blocking oxygen-isolating film is not used, so that the dependence on an expensive water-blocking oxygen-isolating film is weakened, and the cost is reduced. The method has important significance for the application of the quantum dots in the fields of display, illumination and the like.

The invention discloses a medical dressing for treating a large area wound and a manufacturing method thereof. The medical dressing is composed of from top to bottom: an isolation paper, a sodium alginate hydrogel, a non-woven fabric, a medical glue layer and a base cloth; or from top to bottom, an isolation paper, an alginate hydrogel, a medical glue layer and a base cloth. The sodium alginate hydrogel is a hydrogel mixed by 100 percent pure sodium alginate crystals and water. The alginate hydrogel is a hydrogel, which assumes a transparent gel shape formed by immersing a 100 percent pure calcium alginate non-woven fabric to a sodium alginate solution, automatically converts between a solid state and a liquid state based on changes of using state. The novelty of the invention lies in combining a material which promotes curing of the wound and a material which is secured to body surface. The medical dressing of the invention has the advantages of outside water resistance, extra-long adhering time, and simple operation and usage. The medical dressing of the invention faces towards the wound in humid environment, which promotes healing. The medical dressing can also reduce burning pain caused by the large area wound, prevent infection and wound adhesion, block bacteria from entering, and reduce times for changing medicine.

The invention discloses an environmentally-friendly water-based rusty antirust coating, and belongs to the technical field of surface protection of metal products. The coating is prepared by the following steps: sequentially taking 20-30 parts by weight of a styrene-acrylic emulsion, 8-10 parts by weight of a polyvinyl alcohol liquid, 8-10 parts by weight of organic silicon resin, 8-10 parts by weight of modified starch, 8-10 parts by weight of calcium phosphite, 8-10 parts by weight of bamboo vinegar, 3-5 parts by weight of a defoaming agent, 3-5 parts by weight of a surfactant, 3-5 parts byweight of a thickening agent, 10-20 parts by weight of modified diatomaceous earth and 80-100 parts by weight of deionized water, putting the modified starch, the calcium phosphite, the bamboo vinegar, the defoaming agent, the surfactant, the thickening agent, the modified diatomaceous earth and the deionized water into a ball mill, performing ball milling mixing for 30-50 min, then adding the styrene-acrylic emulsion and the organic silicon resin into the ball mill, performing ball milling mixing for 40-60 min, and performing sieving by using a 80-mesh sieve to obtain the environmentally-friendly water-based rusty antirust coating. The environmentally-friendly water-based rusty antirust coating provided by the invention has good antirust performance.

The invention provides a flame-retardant polyurethane material and a preparation method thereof. The flame-retardant polyurethane material is prepared from the following raw materials in parts by weight: 22 parts of polyether polyol, 22 parts of isocyanate, 6 parts of expandable graphite and ammonium polyphosphate and 0.05-0.25 parts of modified graphene oxide. The modified graphene oxide is phytic acid modified graphene oxide, octadecylamine modified graphene oxide or isophorone diisocyanate (IPDI) modified graphene oxide. Graphene oxide is modified, the dispersity and compatibility of graphene oxide in a base material are improved, meanwhile, expandable graphite and ammonium polyphosphate cooperate to form a more compact and perfect carbon layer, and the flame retardance of the materialis improved.

The invention discloses a carbon roaster flue wall guy brick precast block and a production method thereof. The carbon roaster flue wall guy brick precast block is produced by subjecting a mixture and an additive to mixing, stirring with water, molding by casting, curing and roasting, wherein the mixture comprises, by weight, 60-80% of bauxite chamotte, 5-20% of silicon carbide, 3-10% of silica fume, 3-10% of alumina powder, 3-10% of fine kyanite powder, 3-10% of pure calcium aluminate cement and 3-10% of metallic silicon, and the mass ratio of the mixture to the additive is 100 to 0.2-2. The production method includes mixing the mixture with the additive with the water added, pouring a mixed material into a mould and casting for vibration molding; roasting for 24-48 hours at 110-300 DEG C after natural curing so as to obtain a finished product. The carbon roaster flue wall guy brick precast block is low in production cost and simple in technology, properties such as the high-temperature creep rate and refractoriness under load can reach the levels of fired guy bricks, and the strength, the thermal-shock-resistant stability and sulfide corrodibility are superior to those of the fired guy bricks.

The invention discloses antirust master batches for various metals as well as a preparation method and application of the antirust master batches. The antirust master batches comprise the following components in percentage by mass: 30-50% of a compounded antirust agent, 40-60% of carrier plastic and 10-20% of an auxiliary agent, wherein the compounded antirust agent is prepared by mixing disodium sebacate, sodium molybdate and diglycolamide oleate borate according to a mass ratio of (1-1.3):(1.1-1.5):(2.2-3.2); and the auxiliary agent is prepared by mixing stearic acid amide, silicon dioxide, sucrose fatty acid ester and an antioxidant 1076 according to a mass ratio of (0.9-1.3):(4.8-6.5):(2.5-3.3):(0.8-1.1). The diglycolamide oleate borate is adopted as an additive and has a dispersion effect and an antirust effect, and the compounded antirust agent has certain polarity, can penetrate through the carrier plastic and volatilize to the surface of a packed metal to form a protective film so as to prevent corrosion of external corrosive substances, and cannot be incompatible with the carrier plastic to generate frost due to too strong polarity. The antirust master batches do not contain harmful ingredients, are environment-friendly and safe to use, and can achieve an antirust effect on various metals.

The invention discloses an FRP wrapped prestress recycled concrete tubular pile mainly formed by an FRP pipe, a round reinforcement cage framework, cross steel ribs and recycled concrete. The round reinforcement cage framework and the cross steel ribs are arranged in the FRP pipe, and a round inner cavity is formed in the FRP pipe through the recycled concrete. The round reinforcement cage framework is formed by welding longitudinal prestressed tendons and spiral stirrups. An FRP pipe wrapped pile body resistant to corrosion, light and high in strength can be effectively prevented from being corroded, the corrosion problem of the tubular pile is solved, and the durability of a pile foundation is improved. The inner supporting cross steel ribs can fully achieve the respective advantages of steel, prestressed reinforcement and concrete, the stress performance of the recycled concrete is improved, the bearing capacity and stability of the single pile are improved, the lateral rigidity of the pile body is increased, and transverse deformation is reduced. Waste concrete is fully utilized as recycled aggregate, and application and popularization of the recycled concrete in building foundation engineering are facilitated.

The invention relates to oil-resistant, high-temperature-resistant and low-volatile organic silica gel. Methyl vinyl MQ resin, methyl silicone oil, a silane coupling agent 1, a silane coupling agent 2, a silane coupling agent 3, hydrogen-containing silicone oil, white carbon black, a Pt catalyst, an inhibitor and black color paste are mixed in a weight ratio of (20-35) : (40-50) : (0.5-3) : (0.5-3) : (0.5-3) : (3-9) : (1-6) : (0.02-0.1) : (0.02-0.1) : (0.03-0.5). The silane coupling agent 1 adopted by the invention contains a plurality of ethoxy groups, so that the silane coupling agent 1 canplay a role of a water absorbent while playing a role of a coupling agent, the content of moisture in a system is reduced, and the storage stability of the product is improved; meanwhile, the silane coupling agent 2 contains two adjacent benzene rings, so that the cracking temperature of the glue at high temperature can be increased; besides, ether chain molecules contained in the silane couplingagent 3 fill among polysiloxane molecular chains, so that corrosion of oil molecules to colloid is effectively blocked.