382 results about "Acid resistance" patented technology

The invention belongs to the technical field of cement concrete surface coatings, and discloses a cement concrete surface coating structure with acid-resistant and corrosion-resistant functions, which has the advantages that the acid resistance is improved: a composite coating structure is adopted, and the advantages of modified epoxy resin, nano filler and polyurea are combined, so that the acid resistance and durability of the coating are remarkably improved. The modified epoxy resin primer has good permeability, so that the adhesive force between the coating and a concrete base layer can be effectively enhanced, and the falling risk is reduced. And compared with a traditional epoxy resin coating, the preparation method of the composite coating simplifies the curing process and reduces the construction difficulty. And the cost is reduced: the nanofiller is adopted to replace part of the polyurea material, so that the cost of the coating is reduced, and the performance is improved. The coating is endowed with excellent hydrophobicity and self-cleaning capability through surface hydrophobic treatment, dirt adhesion is reduced, and the service life is prolonged.

The invention relates to the technical field of dye synthesis, and particularly discloses a 5-substituted amino-5 '-acetamido-3, 3'-dipyridyl derivative as well as a preparation method and application of the 5-substituted amino-5 '-acetamido-3, 3'-dipyridyl derivative. The structure of the 5-substituted amino-5 '-acetamido-3, 3'-dipyridyl derivative is as shown in a formula (I) in the specification, according to the application, N-acetyl blue is used as a parent for modification, and different derivative structures are introduced to amino groups, so that the novel bipyridine dye, namely the 5-substituted amino-5 '-acetamido-3, 3'-bipyridine derivative, is obtained. The 5-substituted amino-5 '-acetamido-3, 3'-dipyridyl derivative has higher color development intensity, and has the advantages of comprehensive color fastness, water washing resistance, acid resistance, sublimation resistance, wet friction resistance, excellent performance and the like when being applied to fabric dyeing.

The invention discloses a corrosion-resistant aluminum alloy profile and a preparation method thereof, and belongs to the technical field of aluminum alloy profiles. By optimizing the components of the corrosion-resistant aluminum alloy, the strength of the aluminum alloy profile can be guaranteed, and the corrosion resistance of the aluminum alloy profile is positively influenced. Besides, the corrosion-resistant coating is formed on the surface of the corrosion-resistant aluminum alloy base material in a laser cladding mode, the corrosion resistance of the aluminum alloy profile can be remarkably improved while the application performance of the aluminum alloy profile is guaranteed, and in the corrosion-resistant coating, nickel powder can enhance pitting corrosion resistance and intergranular corrosion resistance, so that the corrosion resistance of the aluminum alloy profile is improved. The adhesive force with an aluminum alloy base material is improved; the boron nitride can improve the acid resistance and wear resistance of the surface of the aluminum alloy profile and block a corrosion channel; the lanthanum oxide and the cerium dioxide have a synergistic effect, so that surface grains can be refined, air holes generated in the cladding process are reduced, the compactness of the coating is improved, the compatibility with an aluminum alloy base material is promoted, and the apparent quality of the aluminum alloy profile is guaranteed.

The invention relates to the technical field of water treatment, in particular to a reverse osmosis membrane and a preparation method thereof. The preparation method of the reverse osmosis membrane comprises the following steps: soaking a base membrane in a water phase solution, taking out the base membrane, drying the surface of the base membrane, coating the base membrane with an oil phase solution, carrying out interfacial polymerization reaction, curing, coating with a modifier solution, and drying to obtain the reverse osmosis membrane, the modifying agent comprises 2, 4, 6-tri (4-aminophenyl)-1, 3, 5-triazine-1, 3, 5-tri (4-methyl phenyl) benzene. The successfully grafted COFs can improve the water permeability of the membrane to a certain extent, and also can improve the pollution resistance, acid resistance and oxidation resistance of the membrane, so that the service life of the membrane is prolonged. According to the invention, different effects of the same type of imino COFs introduced to the reverse osmosis membrane are further compared, so that the excellence of the selected imino COFs is highlighted.

The present invention relates to the field of water treatment technology, and more particularly to a kind of reverse osmosis membrane and preparation method thereof.The preparation method of the reverse osmosis membrane includes:Basement membrane is soaked in aqueous phase solution, after taking out surface drying, oil phase solution is coated on basement membrane and carries out interfacial polymerization reaction, after solidification, coating modifier solution, after drying, obtain reverse osmosis membrane;The modifier includes 2,4,6-tris (4-aminophenyl) ‑1,3,5-triazine ‑1,3,5-tris (4-methylphenyl) benzene.The COFs successfully grafted by the present invention can improve the water permeability of membrane to a certain extent, and can also improve the anti-pollution property, acid resistance and oxidation resistance of membrane, and then improve the service life of membrane.The present invention further compares the different effects that the same type of imino COFs are introduced into reverse osmosis membrane, so as to highlight the excellence of the imino COFs selected by the present invention.

The invention provides an oil-water separation mineralization net film as well as a preparation method and application thereof. The oil-water separation mineralization net film comprises an organic layer crosslinked on a grid substrate, the inorganic layer grows in the organic layer in an in-situ mineralization manner; the organic layer is a polymer layer formed by coating a polymer solution containing a cross-linking agent on the grid substrate for cross-linking; the inorganic layer is an inorganic mineral particle layer which grows on the surface of the organic layer in an in-situ mineralization mode. The mineralized net film for oil-water separation not only has excellent binding capacity with the grid substrate, but also has high chemical stability of acid resistance, alkali resistance and organic solvent resistance and excellent mechanical performance, and can be widely applied to oil-water separation under complex conditions.

The invention relates to the technical field of adhesive tapes, and particularly discloses a UV (ultraviolet) visbreaking anti-acid adhesive tape for thinning flexible glass and a preparation process of the UV visbreaking anti-acid adhesive tape. A UV viscosity-reducing acid-resistant adhesive tape for thinning flexible glass comprises a base material layer, a pressure-sensitive adhesive layer and a release film layer which are stacked in sequence, and the pressure-sensitive adhesive layer is prepared from the following raw materials: 85-120 parts by mass of an acrylate copolymer, 3-5 parts by mass of a cross-linking agent, 1.5-2.5 parts by mass of a photoinitiator, 2-5 parts by mass of an acid-resistant nano filler and 0.2-0.4 part by mass of an amine catalyst; the acrylate copolymer is prepared from the following raw materials in parts by mass: 20-30 parts of an imidazolinyl-containing monomer, 15-25 parts of a large-steric-hindrance alkyl-containing monomer, 45-55 parts of a flexible monomer and 5-10 parts of a carboxyl-containing monomer. The UV visbreaking acid-resistant agent prepared by the invention has relatively good acid resistance and reliable UV visbreaking and high initial bonding balance.

Provided is a glass composition having a high elastic modulus and improved acid resistance and alkali resistance. The glass composition according to the present invention has SiO2, Al2O3, B2O3, CaO, and T-Fe2O3 content ratios of 50 mass% < = SiO2 + Al2O3 < = 66 mass%, 0 mass% < = B2O3 < = 10 mass%, 5 mass% < = CaO < = 30 mass%, and 10 mass% < T-Fe2O3 < = 25 mass%. The mass ratio calculated by Al2O3 / (SiO2 + Al2O3) is 0.05 or more and less than 0.15, and the mass ratio calculated by MgO / (MgO + CaO) is 0.001 or more and 0.20 or less.

The invention relates to the technical field of high polymer materials and sealing, in particular to a rubber gasket and a preparation method of the rubber gasket. The preparation method comprises the following steps: enhancing by using an ethylene-vinyl alcohol copolymer (EVOH) with the ethylene content of 29-48%, carrying out compatibility by using a styrene-ethylene-butylene-styrene block copolymer grafted maleic anhydride (SEBS-g-MA) with the grafting rate of more than or equal to 10%, carrying out synergistic reinforcement by using carbon black and nanoscale calcium carbonate, and carrying out premixing, hot-pressing vulcanization and acid environment aging treatment. Through EVOH enhancement, SEBS-g-MA compatibility, filler synergistic reinforcement and process optimization, multiple improvements of compatibility, mechanical properties, barrier property and acid resistance are achieved, key defects of a traditional EPDM gasket are overcome, and the EPDM gasket has remarkable technical advantages and practical value in the high-end sealing field (such as fuel cells and tunnel engineering).

The invention relates to normalized high-strength medium-carbon acid-resistant container steel and a preparation method, and belongs to the technical field of steel manufacturing. The acid-resistant container steel comprises the following chemical components in percentage by mass: less than or equal to 0.20% of C, less than or equal to 0.55% of Si, 1.20-1.70% of Mn, less than or equal to 0.025% of P, less than or equal to 0.010% of S, less than or equal to 0.050% of Nb, less than or equal to 0.050% of V, less than or equal to 0.030% of Ti, more than or equal to 0.020% of Al, less than or equal to 0.0060% of Ca and a matrix element Fe. A proper amount of Nb (niobium), V (vanadium) and Ti (titanium) alloy elements are added to replace a traditional Cu (copper) and Ni (nickel) alloy combination, and the alloy component cost is greatly reduced while high strength and acid resistance are guaranteed.

The invention belongs to the technical field of flame-retardant materials, and particularly relates to modified piperazine pyrophosphate, a composite flame retardant and a preparation method and application of the modified piperazine pyrophosphate and the composite flame retardant. The modified piperazine pyrophosphate provided by the invention is obtained by modifying piperazine pyrophosphate with a modifier; the modifier comprises silicon resin. According to the preparation method, the piperazine pyrophosphate is modified by adopting a specific type of silicon resin as a modifier, and the piperazine pyrophosphate is coated by utilizing a three-dimensional network structure of the silicon resin, so that the hydrophobicity and the flowability of the piperazine pyrophosphate powder can be improved, and the piperazine pyrophosphate powder has good dispersity in a high polymer material; and the paint has good flame retardance, water resistance, acid resistance and alkali resistance.

The invention relates to conductive silver paste and a preparation method and application thereof, and belongs to the technical field of conductive paste. The conductive silver paste provided by the invention comprises the following components in parts by weight: 55-64 parts of inorganic silver powder, 5-15 parts of a silver compound, 5-9 parts of glass powder, 10-34 parts of an organic carrier and 1-5 parts of an additive, the glass powder comprises SiO2 and B2O3, and the ratio of the mass of the silver compound to the total mass of SiO2 and B2O3 in the glass powder is 1: (0.1-1). Specific components are added into the conductive silver paste, the content of the components and the content of functional groups are adjusted, it is guaranteed that the paste has good conductivity, binding force and acid resistance during printing, the paste has good surface appearance after printing, and the conductive silver paste can be suitable for products with smaller specifications and sizes.

The invention relates to the technical field of membrane separation, and discloses a polythiourea composite nanofiltration membrane as well as a preparation method and application thereof. The composite nanofiltration membrane comprises a bottom layer, a porous support layer and a polythiourea separation layer which are arranged in sequence, wherein the polythiourea separation layer comprises a structural unit A from polyamine and a structural unit B from a polyisothiocyano compound; wherein the structural unit A and the structural unit B are connected through a structure shown in a formula I, Ar1 is a residue obtained after a reaction of a compound containing polyisothiocyano groups, and Ar2 is a residue obtained after a reaction of polyamine. The separation layer structure of the polythiourea composite nanofiltration membrane contains C = S bonds, a large number of hydrogen bonds can be formed, the polythiourea composite nanofiltration membrane has excellent chemical stability, the structural stability of the composite nanofiltration membrane in a strong acid environment is remarkably improved on the premise that the separation performance of the composite nanofiltration membrane is guaranteed, and the acid resistance of the composite nanofiltration membrane is improved.

The application discloses a kind of corrosion-resistant aluminum alloy profiles and preparation method thereof, belong to aluminum alloy profile technical field.The application can ensure the strength of aluminum alloy profile by optimizing the composition of corrosion-resistant aluminum alloy, and has a positive effect on the corrosion resistance of aluminum alloy profile.In addition, the application forms a corrosion-resistant coating on the surface of the corrosion-resistant aluminum alloy substrate by laser cladding, which can significantly improve the corrosion resistance of the aluminum alloy profile while ensuring the application performance of the aluminum alloy profile.In the corrosion-resistant coating, nickel powder can enhance the resistance to pitting and intergranular corrosion, and improve the adhesion to the aluminum alloy substrate.Boron nitride can improve the surface acid resistance and wear resistance of the aluminum alloy profile, and block the corrosion channel.Lanthanum oxide and cerium dioxide have a synergistic effect, which can refine the surface grains, reduce the pores generated during the cladding process, improve the compactness of the coating, promote the compatibility with the aluminum alloy substrate, and ensure the appearance quality of the aluminum alloy profile.

Disclosed in the present invention are an acid-resistant noble metal ion adsorption film and a preparation method therefor. The preparation method comprises: a) pretreatment of a base film: firstly, cleaning and drying a silicon carbide substrate to obtain a clean film; then performing oxidation treatment on the clean film to obtain a micro-oxidation film; and finally, placing the micro-oxidation film in a strong acid solution for acidification treatment, to obtain a base film modified with a hydroxyl functional group; b) the growth of an MOF seed crystal: placing the obtained base film modified with the hydroxyl functional group into a seed crystal growth solution, and reacting at 110-130°C for 12-24 hours to obtain a film loaded with the MOF seed crystal; and c) MOF secondary growth: placing the prepared film loaded with the MOF seed crystal into a secondary growth solution, and reacting at 110-130°C for 20-30 hours to obtain the acid-resistant noble metal ion adsorption film. The adsorption film prepared according to the present invention has good acid resistance, and can achieve efficient and stable recovery of rare noble metals in a strong acid environment.

The invention relates to an acid-resistant nanofiltration membrane and a preparation method thereof, and relates to the technical field of nanofiltration membranes. The acid-resistant nanofiltration membrane comprises a supporting base layer and a functional layer, the functional layer is formed by interfacial polymerization on the supporting base layer, the supporting base layer comprises a polyetherimide-nanomembrane, raw materials of the functional layer comprise an oil-phase solution and a water-phase solution, the oil-phase solution comprises 1, 3, 5-benzene trisulfonyl chloride and an oil-phase solvent, and the water-phase solution comprises 1, 3, 5-benzene trisulfonyl chloride and a water-phase solvent. The water-phase solution comprises piperazine and a water-phase solvent; the method has the effect of improving the acid resistance of the nanofiltration membrane.

The invention discloses a soil stabilizer, environment-friendly acid-resistant early-strength type flow-state stabilized soil and application, and particularly discloses a soil stabilizer which comprises the following components in parts by weight: 5-10 parts of cement, 3-12 parts of modified lithium slag powder, 2-8 parts of regenerated micro powder, 2-8 parts of water glass and 40-50 parts of water. The invention further discloses environment-friendly anti-acid early-strength type fluid-state solidified soil containing the soil solidifying agent, and the environment-friendly anti-acid early-strength type fluid-state solidified soil further comprises 3-10 parts of fly ash and 175-195 parts of soil. The invention further discloses application of the soil stabilizer in foundation preparation or foundation pit backfilling. The problems that in the prior art, industrial by-products such as lithium slag and construction waste pollute the environment, and acid soil cannot serve as a solidified soil raw material are solved. The lithium slag and the regenerated micro powder are subjected to resource utilization, so that the acid resistance of the solidified soil can be improved, and meanwhile, the early strength of the solidified soil is greatly improved.

The present invention discloses a highly selective acid-resistant polyamide nanofiltration membrane containing Tröger's base and a preparation method thereof. The method comprises: preparing a Tröger's base phenylenediamine monomer, dissolving the monomer together with polyethersulfone in a polar solvent to prepare a casting solution, and then coating the casting solution on a non-woven fabric to prepare a polyethersulfone support membrane with a surface rich in PDA-TB by non-solvent induced phase separation, and finally contacting with a polyacyl chloride solution by one side to perform a polymerization reaction to prepare a highly selective acid-resistant polyamide nanofiltration membrane containing Tröger's base. Compared with the conventional poly(piperazine-amide) nanofiltration membrane, the nanofiltration membrane of the present invention has greatly improved acid resistance and higher separation selectivity.

The invention provides an LTCC raw material belt with a high thermal expansion coefficient, an LTCC substrate and a preparation method of the LTCC substrate, the LTCC raw material belt with a smooth surface and a uniform thickness is obtained through tape casting by adjusting the proportion of silicon dioxide ceramic powder, MgTiO3 ceramic, SrTiO3 ceramic, Li2MgSiO4 ceramic, BCBS, ZABS and LASP microcrystalline glass powder, the LTCC raw material belt is sintered in a nitrogen furnace at 880-940 DEG C for 1-3 h, and the LTCC raw material belt can be co-fired with low-cost copper electrode slurry to be flat and tightly attached to the low-cost copper electrode slurry. The LTCC substrate with the thermal expansion coefficient larger than 11 ppm / DEG C is prepared, under the test frequency of 5 GHz, the dielectric constant of the LTCC substrate ranges from 5.1 to 6.1, the dielectric loss ranges from 0.0025 to 0.004, the bending strength ranges from 170 MPa to 230 MPa, the thermal expansion coefficient at the temperature ranging from 30 DEG C to 400 DEG C ranges from 11.0 ppm / DEG C to 13.0 ppm / DEG C, and acid resistance is good.

The invention relates to the field of ceramic glaze materials, and provides a high-acid-resistance ceramic glaze material and a preparation method thereof.The glaze is composed of boron nitride nanosheets, fluorine-doped titanium oxide, calcium fluoride, kaolinite, feldspar, aluminum oxide, zirconium oxide, silicon carbide, sodium fluosilicate, borax, kaolin, calcium phosphate, polymethyl methacrylate balls, ammonium polyacrylate and deionized water. A lotus-leaf-like micro-convex structure is formed on the surface of the glaze layer, the convex gap is 2.5-5.0 microns, the height is 0.8-1.2 microns, and the diameter is 1.1-2.5 microns, so that the acid resistance and the super-hydrophobic property are improved. The preparation method comprises the following steps: step-by-step ball milling of a hard phase and a soft phase, high-energy ball milling assisted stripping of boron nitride, ultrasonic dispersion, template introduction, freeze drying, gradient pyrolysis under nitrogen protection, sintering at 1150-1200 DEG C, sodium fluosilicate surface fluorination treatment and the like. The stability of TiO2 is optimized through fluorine doping, the acid resistance and crack resistance are enhanced through boron nitride, and the self-cleaning property is improved through a nano structure.

The invention relates to the technical field of chemical fiber production, in particular to an acid-resistant high-modulus para-aramid fiber and a preparation method thereof.The preparation method comprises the steps that S1, a spinning solution of para-aramid is extruded through a spinneret plate to form nascent fibers; s2, immersing the nascent fiber into a coagulating bath containing diisocyanate for soaking reaction to obtain a modified tow; s3, the modified tows are subjected to tension merging and synchronous twisting, then multi-stage drying treatment is conducted, and the acid-resistant high-modulus para-aramid fibers are obtained. The high-model para-aramid fiber prepared by the method shows higher stability and longer service life in a strong acid environment, and is suitable for application fields requiring higher acid resistance, such as protective materials, corrosion-resistant coatings, high-performance composite materials and the like. The preparation method provided by the invention provides an innovative and effective improved technology for production of the para-aramid fiber, and has relatively high industrial application value.

The invention relates to the technical field of copper smelting, in particular to an MOF composite membrane capable of selectively adsorbing rhenium and a preparation method and application of the MOF composite membrane. The preparation method of the MOF composite membrane capable of selectively adsorbing rhenium, provided by the invention, comprises the following steps: dispersing a sulfonic acid functionalized UiO-66 type metal organic framework material in a polyvinylidene fluoride solution to obtain a metal organic framework material dispersion liquid; mixing the metal organic framework material dispersion liquid with a cross-linking agent, carrying out a cross-linking reaction, and then mixing the obtained reaction liquid with an acid-resistant ionic liquid to obtain a spinning solution; performing electrostatic spinning on the spinning solution to obtain a silk membrane; and dipping the silk membrane in an amino silane coupling agent solution, and curing to obtain the MOF composite membrane capable of selectively adsorbing rhenium. The MOF composite membrane capable of selectively adsorbing rhenium provided by the invention can selectively adsorb rhenium in waste acid treatment, so that selective separation of rhenium is realized, and meanwhile, the membrane has excellent acid tolerance.

The invention discloses foam concrete based on acidic iron tailing sand. The foam concrete comprises the following components in parts by weight: 200-500 parts of cement, 100-400 parts of acidic iron tailing sand, 50-150 parts of superfine slag powder, 15-25 parts of a composite acid-resistant foaming agent solution, 1-10 parts of composite fibers and 200-300 parts of water, the composite acid-resistant foaming agent solution is prepared by mixing a composite acid-resistant foaming agent and water, and the composite fiber comprises a combination of organic reinforced fiber and inorganic modified fiber. According to the preparation method, the long-term stability and the acid resistance of the foam concrete can be remarkably improved, and meanwhile, the overall performance of the foam concrete is remarkably improved by utilizing the acid resistance and the high temperature resistance of the polymer coated aluminum silicate fibers.

The invention discloses a long-acting stable filling agent for phosphorite mining and a preparation method and application thereof, the long-acting stable filling agent takes cement, slag powder, phosphogypsum and fly ash as matrix components, and is supplemented with additives such as a nano modified liquid, a retarder and an early strength agent. The 3d compressive strength reaches 4.6-5.5 MPa, the 28d compressive strength reaches 13.5-15.5 MPa, the 90d strength retention rate in a simulated acid environment is larger than or equal to 84%, the volume shrinkage rate is smaller than or equal to 0.5%, and the early strength and the excellent long-term acid-resistant stability are both high. Through a synergistic effect of a nano-micron composite structure, pores are filled with nano particles and secondary hydration is promoted, basalt fibers are bridged to resist cracking, and nano montmorillonite blocks acid etching, so that unification of high early strength and long-acting acid resistance is realized. The material is simple and convenient in preparation process, can be efficiently used for mining and filling of phosphorite mountains, and meets the requirements of rapid support and long-term acid medium erosion resistance.

The present application belongs to a kind of anti-tarnish sealant, for the technical problem that existing anti-tarnish agent can only extend the tarnish time, reduce the degree of tarnish, and the high temperature stability is poor, the silver-plated parts after treatment poor acid and salt fog ability, provide a kind of silver coating water-based anti-tarnish sealant, anti-tarnish film and its preparation method, anti-tarnish sealant includes yttrium zirconium composite sol, silane coupling agent, alkyl mercaptan, emulsifier, wetting agent, penetrant and water, it is proved to have the dual role of anti-tarnish and sealing silver coating hole, can significantly improve the anti-tarnish ability and acid and salt fog resistance of silver coating, and has very high high-temperature stability, can withstand 900 ℃ high-temperature baking.

To provide a ferritic stainless steel and a steel sheet thereof, having excellent oxidation resistance and hot workability.SOLUTION: A ferritic stainless steel contains C≤0.03 mass%, Si≤0.05 mass%, 0.30≤Mn≤1.00 mass%, P≤0.05 mass%, S≤0.05 mass%, Cu≤0.10 mass%, 20.0≤Cr≤25.0 mass%, V≤0.10 mass%, Co≤0.10 mass%, Al≤0.10 mass%, 0.01≤Ti≤0.30 mass%, N≤0.03 mass%, and 0.05≤La≤0.30 mass%. The balance is Fe and unavoidable impurities. The ferritic stainless steel further contains 0.10≤W≤2.00 mass% and / or 0.10≤Mo≤2.00 mass%. The ferritic stainless steel may further contain 0≤Ni≤2.00 mass%. A steel sheet is made of the ferritic stainless steel.SELECTED DRAWING: None

The utility model relates to quartz sand pickling filter cloth which is composed of an inner layer and an outer layer, the whole filter cloth is of a double-layer organization structure, the inner layer is of a thick grid structure, the outer layer is of a thin mesh structure, the inner layer is used for enhancing the overall strength and stability of the filter cloth, and the outer layer is used for improving the filtering precision. The filter cloth outer layer is formed by weaving warp yarns and weft yarns, the interweaving mode of the warp yarns and the weft yarns is plain weave, and the warp yarns and the weft yarns are alternately interwoven up and down; the whole filter cloth is circular, a circle of skirt edge is arranged on the edge of the filter cloth, and vertical line grooves are evenly distributed in the skirt edge. According to the acid-resistant filter cloth, the polyester fibers and the yarns made of the polytetrafluoroethylene are used as the warps and the wefts, so that the acid resistance of the filter cloth is improved, and the filter cloth can stably work in an acid environment for a long time; the quartz sand pickling efficiency and the product quality are effectively improved by weaving in a plain weave interweaving mode, and meanwhile, the production cost is reduced.

The invention relates to an N-PETG composite functional master batch as well as a preparation method and application thereof. The N-PETG composite functional master batch is prepared from the following raw materials in parts by weight: 35 to 70 parts of N-PETG carrier, 25 to 60 parts of pigment and 1 to 5 parts of additive. The N-PETG composite functional master batch provided by the invention has the advantages of excellent dispersing performance, heat resistance, mechanical property and high color fastness. The invention also provides the N-PETG composite material, through reasonable raw material proportioning and process setting, the heat resistance, acid resistance, high and low temperature cycle resistance, mechanical property and appearance attractiveness of the N-PETG composite material are improved, compared with a traditional composite material, the preparation process is simpler, the raw materials are cheaper and easier to obtain, and the N-PETG composite material is green and environment-friendly in the processing and using process and is suitable for industrial production. The material has a good application prospect in refrigerator liner materials.

The invention provides an organic silicon spraying powder processing technology, and belongs to the technical field of organic silicon spraying powder manufacturing, and the organic silicon spraying powder processing technology comprises the following steps: S1, mixing organic silicon resin, pigments and fillers, a necessary leveling agent, a defoaming agent and other assistants according to a certain proportion, and heating to make the mixture reach the use performance index; s2, the glossiness of the powder is not lower than 90 degrees, and after the powder is soaked in a sulfuric acid diluted solution for 750 hours, the powder is still not adhered to a filter bag after being re-dried for 5 hours at 220 DEG C; the organic silicon spraying powder obtained through processing has excellent acid resistance and alkali resistance, after being soaked in a sulfuric acid diluted solution with the pH value being 2 and a sodium hydroxide diluted solution with the pH value being 12 for 750 hours, the organic silicon spraying powder does not stick to a filter bag even after being re-dried for 5 hours at the high temperature of 280 DEG C, a coating formed by the powder can be kept stable for a long time in an extreme corrosive environment, and the service life of the coating is prolonged. Corrosion of the equipment surface is effectively prevented, so that the service life of the equipment is prolonged.

Provided is a high strength steel plate for a sour-resistant line pipe with excellent low-temperature toughness as well as HIC and SSCC resistance. The high strength steel plate for a sour-resistant line pipe has a chemical composition containing, by mass%, C: 0.030-0.060%, Si: 0.01-0.50%, Mn: 0.80-1.80%, P: 0.015% or less, S: 0.0015% or less, Al: 0.010-0.080%, Cr: 0.05-0.50%, Nb: 0.005-0.080%, N: 0.0010-0.0080%, and Ca: 0.0005-0.0050%, with the balance being Fe and inevitable impurities, in which a microstructure at 0.25 mm below a surface of the steel plate consists of granular bainite and tempered martensite austenite constituent, a maximum grain size is 80 µm or less and an average grain size is 20 µm or less at a mid-thickness position of the steel plate, a brittle-ductility transition temperature in a Charpy impact test is -100 °C or lower, and a tensile strength is 535 MPa or more.