163 results about "Nonylphenol" patented technology

The invention provides an amphiphilic carbon dot, a carbon nanofluid and application of the amphiphilic carbon dot and the carbon nanofluid, and belongs to the technical field of nanomaterial oil displacement, and the amphiphilic carbon dot is prepared by taking alkylphenol polyoxyethylene ether and glucose as raw materials to perform solvothermal reaction; the alkylphenol polyoxyethylene ether comprises octylphenol polyoxyethylene ether and / or nonylphenol polyoxyethylene ether; the mass ratio of the alkylphenol polyoxyethylene ether to the glucose is 1: (0.1-2). According to the invention, alkylphenol polyoxyethylene ether and glucose are taken as raw materials, and simple preparation of the amphiphilic carbon dots with high surface and interface activity is realized. The amphiphilic carbon dots provided by the invention show good surface and interface activity at high temperature and high salinity. According to the carbon nanofluid provided by the invention, the amphiphilic carbon dots and the zwitterionic surfactant are compounded, so that the stability of a carbon nanofluid oil displacement system at high temperature and high salt can be further improved, the crude oil recovery rate is increased, and efficient yield-increasing development of high-temperature and high-salt deep oil reservoirs is realized.

The invention provides a composite synergistic system for a shale gas old well and an immovable string production increasing process. The composite synergistic system mainly comprises the following substances: 10-12% of a wetting improver; 4%-6% of a scale remover; 2%-3% of a scale inhibition dispersant; 5%-10% of a resistance-reducing discharge aiding agent; 15%-20% of a synergistic accelerant; the wetting improver is a mixture of alkyl polyglucoside, an anionic surfactant sodium dodecyl benzene sulfonate and deionized water, the content of the alkyl polyglucoside in the wetting improver is 5%-10%, and the content of the anionic surfactant sodium dodecyl benzene sulfonate is 15%-18%; the descaling agent is a mixture of sodium alpha-olefin sulfonate and nonylphenol polyoxyethylene ether ammonium sulfate, and the mass ratio of the sodium alpha-olefin sulfonate to the nonylphenol polyoxyethylene ether ammonium sulfate in the descaling agent is (2: 1)-(3: 1). According to the composite synergistic system, through combination and reuse of different materials and different doses, the multifunctional composite synergistic system integrating vibration, permeation and dispersion effects is researched and developed, and therefore immovable tubular column yield increase construction of a shale gas old well is achieved.

The invention belongs to the technical field of oilfield auxiliaries, and particularly relates to an oil-soluble demulsifier for a heavy oil field and a preparation method of the oil-soluble demulsifier. The oil-soluble demulsifier for the heavy oil field, provided by the invention, is prepared from a block polymer emulsion, nonylphenol polyoxyethylene ether, modified nanoparticles and a cross-linking agent. According to the invention, methoxystyrene, dodecyl vinyl ether, N, N-dimethylaminopropyl acrylamide and 2-acrylamide-2-methylpropanesulfonic acid are adopted to prepare a quaternary block comb-shaped polymer, the quaternary block comb-shaped polymer and nonylphenol polyoxyethylene ether are subjected to molecular-level cross-linking through a cross-linking agent, nano modified particles are added, and the quaternary block comb-shaped polymer is prepared. The prepared demulsifier can be rapidly adsorbed on an oil-water interface and respectively adsorb an oil phase and a water phase, so that the tension of the oil-water interface is reduced, rapid separation of the oil phase and the water phase is realized, and the demulsification performance is improved.

The invention relates to the technical field of liquid chromatography, and discloses a mixed product liquid chromatography comprehensive analysis method which comprises the following steps: S1, mixing products: respectively mixing aldehyde compounds and ketone compounds with different mobile phases, and then injecting into an injection chromatographic system; s2, liquid chromatographic analysis: separating and analyzing a mixed product by using a liquid chromatograph; s3, performing qualitative analysis; on the basis of liquid chromatographic analysis, each peak in a chromatogram is identified. The method aims at qualitative and quantitative analysis of main substances (groups) in an organic reaction mixed product system; the method is suitable for analyzing the relative percentage content of products related to organic chemical reactions such as raw materials (nonylphenol) related to a core production process, nonylphenol formylation reaction, nonylphenol esterification reaction, phenolic ester Fris rearrangement reaction and the like, and samples in a refining process; the influence of absorption peaks and chromatographic line oscillation of other non-target substances on the content analysis result can be effectively avoided.

The application discloses a thickened oil viscosity reducer for a main viscosity contribution component of colloid and a preparation method thereof. The thickened oil viscosity reducer comprises the following components in percentage by weight: diethylene glycol methyl ether 25-35%, propylene glycol formate 15-25%, dispersant 5-8%, chelating agent 2-4%, anti-coking agent 0.5-1%, anti-swelling agent 1-2% and corrosion inhibitor 1-2%; and the balance is water. The application is a polar + non-aromatic hydrocarbon solvent system; completely avoids high-risk substances such as nonylphenol polyoxyethylene ether, petroleum sulfonate sodium and organic chlorine; is designed in pertinence and can effectively inhibit metal-induced asphaltene bridging; can withstand working conditions from normal temperature to 250 DEG C and up to 300 DEG C; thermal stability is significantly enhanced, and residual carbon after aging is lower than 8%; viscosity reduction efficiency is higher; the system is more stable, flexible in compounding and suitable for field construction.

The invention relates to a gemini surfactant for thickened oil recovery and a preparation method thereof, and belongs to the technical field of thickened oil recovery. The preparation method of the gemini surfactant for thickened oil recovery comprises the following steps: dissolving ethylene glycol dihydric alcohol and paratoluensulfonyl chloride in a tetrahydrofuran solvent, and carrying out substitution reaction under an alkaline condition to obtain an intermediate I; adding nonyl phenol and the intermediate I into a mixed solvent of tetrahydrofuran and N, N-dimethylformamide, and carrying out etherification reaction under an alkaline condition to obtain a gemini precursor II; and mixing an alkylphenol polyoxyethylene ether surfactant, the gemini precursor II and a formaldehyde aqueous solution, and carrying out a phenolic aldehyde condensation polymerization reaction under an acidic condition to obtain the gemini surfactant. The gemini surfactant prepared by the preparation method has good temperature resistance and salt tolerance, the preparation method is simple, the synthesis cost is low, and the gemini surfactant has good economical efficiency and is beneficial to realizing large-scale industrial production.

According to the all-organic nonlinear insulating material based on the electron-donating group and the preparation method, polyolefin is used as a matrix of the material, and an organic small molecule filler containing the electron-donating group is introduced to form a uniformly dispersed composite structure, so that the nonlinear conductivity of the material is remarkably improved. The small organic molecules can be ethylene glycol diphenyl ether, nonylphenol polyoxyethylene ether, allyloxy polyoxyethylene ether or octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate, and the mass fraction of the filler is 0.1-3 wt%. The preparation method comprises the following steps: melting the polyolefin matrix at 110-120 DEG C, adding the small organic molecule filler, and blending for 10-30 minutes at the rotating speed of 50-70 r / min. The material has excellent electric field homogenization capability in a high electric field, avoids the problem of inorganic filler agglomeration, has relatively low filler content and excellent processability, can be widely applied to the field of high-voltage electrical equipment such as transformers, switch equipment and mutual inductors, and effectively improves the insulating property and prolongs the service life of the equipment.

The invention discloses a neutral organic chelating cleaning agent for a boiler, and belongs to the field of chemical cleaning of boiler superheaters of thermal power plants. The cleaning agent is prepared from the following components in percentage by weight: 0.5%-5% of ethylenediamine tetraacetic acid ammonium, 0.1%-4% of acetic acid or ammonium acetate, 0.1%-3% of glycollic acid ammonium or glycollic acid, 0.1%-5% of a pH regulator, 0.1%-1% of a cosolvent, 0.2%-0.8% of a corrosion inhibitor SH369, 0.1%-0.6% of a reducing agent, 0.0%-0.3% of a defoaming agent, 0.0%-0.2% of a surfactant and 84%-93% of water, wherein the pH value of the cleaning agent is 6-8; the cosolvent is tartaric acid and / or hydroxybutyl diacid, the surfactant is nonylphenol polyoxyethylene ether, and the reducing agent is hydrazine. The cleaning agent disclosed by the invention has good dissolving capacity on oxide skin, does not generate precipitates to cause pipe blockage, is a neutral solution, is very small in corrosivity, does not generate intergranular corrosion, is beneficial to protecting various pipes of superheaters and reheaters, and is a safe and efficient superheater cleaning agent.

The invention relates to a composite fuel oil additive, fuel oil and application. The composite fuel oil additive comprises the following components in parts by mass: 1-8 parts of an isocaprylic acid metal substance, 1-5 parts of a transition metal ionic compound and 15-20 parts of a surfactant, the surfactant is selected from one or more of nonylphenol polyoxyethylene ether, dinonyl naphthalene sulfonic acid and dodecylbenzene sulfonic acid. The composite fuel oil additive can obviously improve the combustion efficiency and the utilization rate of fuel oil / fuel oil and improve the stability of fuel oil components, so that the fuel oil / fuel oil can be fully combusted, generation of carbon emission particles is reduced, meanwhile, residual carbon deposits in a fuel oil / fuel oil engine can be cleared and decomposed, abrasive particle abrasion of the engine is reduced, and the service life of the engine is prolonged. The engine working efficiency is improved; meanwhile, the composite fuel oil additive disclosed by the invention is green and economic, is suitable for industrial production, and can be applied to the fields of ships and the like.

The invention belongs to the technical field of tertiary oil recovery, and particularly relates to a temperature-resistant and salt-resistant thickened oil viscosity-reducing oil-displacing agent as well as a preparation method and application thereof. The preparation method comprises the following steps: adding nonyl phenol, DMF (Dimethyl Formamide) and epoxy halopropane into a reactor, stirring and dissolving, carrying out a heat preservation reaction, and carrying out reduced pressure distillation to obtain a viscous solid; adding isopropanol into the viscous solid for dissolving, adding 8-aminonaphthalene-1, 3, 6-trisulfonic acid disodium salt, heating and refluxing for reaction, and performing reduced pressure distillation to obtain a viscous solid; and adding distilled water, heating for dissolving, filtering, adjusting the pH value, separating out solid, standing, separating out supernate, centrifuging the lower-layer solid, concentrating, and drying to obtain the product, namely the viscosity-reducing oil-displacing agent for the thickened oil. The viscosity-reducing oil-displacing agent for the heavy oil has the characteristics of low surface and interface tension, low critical micelle concentration and good viscosity-reducing effect.

The invention discloses a carbon quantum dot oil displacement agent with a slow release function and a preparation method thereof, and relates to the technical field of petrochemical industry. The carbon quantum dot oil displacement agent with the slow release function is marked as a solution C, the solution C comprises a solution A and a solution B, the solution A comprises glucose, lauryl amine and deionized water, the solution B comprises a polylactic acid-glycolic acid copolymer and dichloromethane, and the solution C is prepared by stirring and distilling the solution A and the solution B, and the solution C also internally comprises nonylphenol polyoxyethylene ether and a glutaraldehyde solution. According to the carbon quantum dot oil displacement agent, the interfacial activity and nano permeability of the carbon quantum dots are combined with the slow release and protection functions of the microcapsules, the advantages of high stability, slow release and controlled release, efficient oil displacement and environment friendliness are achieved, the carbon quantum dot oil displacement agent can adapt to complex oil reservoir conditions, the oil displacement efficiency and the recovery efficiency can be improved, and the oil displacement effect is good. The method has remarkable technical advantages and wide application prospects.

The invention provides a phosphate tailing solid-liquid separation filter aid and application. The filter aid is prepared from the following components in percentage by weight: 10 to 15 percent of water-soluble carbon nanotubes, 20 to 25 percent of maleic anhydride grafted ethylene glycol copolymer, 1 to 2 percent of nano titanium dioxide, 10 to 15 percent of C20-22 alcohol polyoxyethylene ether, 20 to 30 percent of cationic polyacrylamide, 5 to 10 percent of carboxymethyl cellulose, 2 to 5 percent of modified sodium silicate and 1 to 2 percent of nonylphenol polyoxyethylene ether. The filter aid disclosed by the invention is prepared into an aqueous solution with the concentration of 0.1-0.3%, and 50-110g / t of tailing dry basis is added in the flotation tailing thickening process, so that the concentration of thick ore pulp reaches more than 60%; before dense ore pulp is filtered, 50-100g / t of a filter aid of a tailing dry basis is added to act with the dense ore pulp, and then filter pressing work is performed, so that the flotation tailing solid-liquid separation effect is effectively improved, the single cycle time of filter pressing is shortened, the water content and viscosity of a filter cake are reduced, discharging is convenient, meanwhile, the service cycle of filter cloth can be prolonged, and the cleaning difficulty can be lowered; the method has important economic and environment-friendly significance.

The invention discloses a pre-crosslinking surface active copolymerized nano-microsphere profile control agent for oil extraction and a preparation method thereof, and belongs to the technical field of profile control and water shutoff of oil fields. The nano-microsphere profile control agent is prepared from the following components in parts by weight: 50 to 60 parts of acrylamide, 10 to 15 parts of acrylic acid, 5 to 10 parts of methacryloyloxyethyl trimethyl ammonium chloride, 2 to 4 parts of an emulsifier, 0.5 to 1 part of nonylphenol polyoxyethylene ether, 8 to 12 parts of coal-based Fischer-Tropsch liquid wax, 2 to 4 parts of 2-acrylamido-2-methylpropanesulfonic acid, 0.1 to 0.3 part of a cross-linking agent and 0.05 to 0.1 part of an initiator. The emulsifier is prepared by reacting pentaerythritol with linoleic acid to generate a tetraester compound, then generating an epoxy compound under the action of formic acid and H2O2, and then reacting with laurinol. The prepared copolymerized nano-microsphere profile control agent is relatively small in particle size and can enter the deep part of a stratum, and the microsphere solution can realize step-by-step plugging due to mild expansibility.

The invention belongs to the technical field of oilfield chemistry, and particularly relates to a viscosity-reducing paraffin inhibitor for oilfield oil well production and a preparation method of the viscosity-reducing paraffin inhibitor. Comprising the following components in percentage by mass: 15.08%-17.92% of maleic anhydride, 18.01%-26.88% of nonylphenol polyoxyethylene ether, 23.2%-25.4% of a benzylamine solution, 3.97%-5.0% of a 5% ferrous sulfate aqueous solution, 3.97%-5.00% of a 5% ammonium persulfate aqueous solution and 15.87%-17.19% of a sodium hydroxide aqueous solution. The viscosity-reducing paraffin inhibitor solves the problems that the density and viscosity of crude oil are increased in the later stage of development of most oil wells in oil fields, paraffin precipitation is serious, the repair-free period is short, and the effect of the existing paraffin inhibitor becomes poor year by year, prolongs the repair-free period of the oil wells, can effectively relieve frequent well repair caused by paraffin precipitation in production of the oil wells in the oil fields, does not contain chlorine, and is environment-friendly. The paraffin control and viscosity reduction effects are considered, and meanwhile, the influence on downstream refining equipment is avoided.

The invention belongs to the technical field of tertiary oil recovery and relates to a thick oil viscosity reducer as well as a preparation method and application thereof. The preparation method comprises the following steps: adding p-nonylphenol, 1-(4-fluorophenyl) piperazine, 40wt% formaldehyde and water into a reactor, stirring, heating, refluxing, and carrying out heat preservation reaction; cooling to below 40 DEG C, extracting, placing in a high-pressure reactor, adding sodium hydroxide solid, introducing nitrogen, vacuumizing, heating, stopping vacuumizing, slowly introducing ethylene oxide, heating, preserving heat and reacting; and carrying out reduced pressure distillation to obtain a viscous liquid, placing the viscous liquid in a high-pressure reactor, adjusting the pH value to 3-4, adding sulfamic acid powder, heating while stirring, carrying out a heat preservation reaction, cooling to 40 DEG C or below, adding ethanolamine, and adjusting the pH value to 7-8 to obtain the product, i.e., the thick oil viscosity reducer. The viscosity reducer has the advantages of low surface tension, low interfacial tension, low critical micelle concentration and good viscosity reduction effect.

The invention discloses epichlorohydrin and a preparation method thereof. Comprising the following steps: feeding a mixed solution containing chloropropene, hydrogen peroxide and a nonionic surfactant and a titanium silicalite molecular sieve TS-1 catalyst in a fixed bed reactor at a mass space velocity of 0.5-10h <-1 >, and reacting at 20-90 DEG C to obtain the epichlorohydrin. The dosage of the catalyst is 0.1-10 wt% of the chloropropene; the nonionic surfactant is selected from at least one of alkyl glucoside, fatty glyceride, fatty acid sorbitan, polysorbate, polyoxyethylene fatty alcohol ether and nonylphenol polyoxyethylene ether; the molar ratio of the hydrogen peroxide to the nonionic surfactant is (1-50): 1; the molar ratio of chloropropene to hydrogen peroxide is (1-10): 1. The nonionic surfactant is added to promote mixing of the organic phase and the water phase, a large amount of solvent does not need to be added in a traditional process, and a large amount of energy consumption such as solvent evaporation and recovery is avoided; the conversion rate of hydrogen peroxide is greater than 95%, and the selectivity of epoxy chloropropane is 95-99%.

The application belongs to the technical field of tertiary oil recovery, and relates to a heavy oil viscosity reducer and a preparation method and application thereof.The preparation method is as follows: p-nonyl phenol, 1-(4-fluorophenyl)piperazine, 40wt% formaldehyde and water are added into a reactor, stirring is carried out, temperature is increased to reflux, and temperature is kept;temperature is reduced to below 40 DEG C, extraction is carried out, the obtained product is placed in a high-pressure reactor, sodium hydroxide solid is added, nitrogen is introduced, vacuum is drawn, temperature is increased, vacuum drawing is stopped, ethylene oxide is slowly introduced, temperature is increased, and temperature is kept;viscous liquid is obtained through reduced pressure distillation, the obtained product is placed in a high-pressure reactor, pH is adjusted to 3-4, aminosulfonic acid powder is added, stirring and heating are carried out, temperature is kept, and the obtained product is cooled to below 40 DEG C;ethanolamine is added, pH is adjusted to 7-8, and the heavy oil viscosity reducer is obtained.The viscosity reducer has the advantages of low surface tension, low interfacial tension, low critical micelle concentration and good viscosity reduction effect.

A nonwoven, a method for making such a nonwoven, and the use of waste carbon to make such a nonwoven. The nonwoven has a total carbon content (TCC) from which 10% to 100% of the TCC of the nonwoven are derived from waste carbon. The nonwoven meets one or more of the criteria a) to e) by comprising less thana) 5000 μg / kg of iso-Nonylphenolhexaethoxylate;b) 500 μg / kg of iso-Nonylphenol;c) 4.0 ng / kg of Octachlorodibenzodioxin;d) 500 μg / kg of Di-2-ethylhexyl phthalate; and / ore) 25 μg / kg of Napthalene.

The application discloses an aluminum alloy cleaning agent and a preparation method and application thereof, and belongs to the technical field of cleaning agents. The aluminum alloy cleaning agent comprises the following raw materials in parts by weight: 7-12 parts of ionic surfactant A, 3.5-6 parts of non-ionic surfactant B, 0.2-3 parts of a dispersing solubilizing agent, 0.8-1.5 parts of a penetrating agent, 3-6 parts of a chelating agent, 0.2-2 parts of an inhibitor, 0.01-0.05 parts of a defoaming agent and 67-83 parts of deionized water. The non-ionic surfactant A comprises at least one of a fatty alcohol polyoxyethylene ether and a nonylphenol polyoxyethylene ether. The non-ionic surfactant B comprises a sorbitan fatty acid ester. The dispersing solubilizing agent comprises a polyhydric alcohol. The aluminum alloy cleaning agent can effectively improve cleaning power, avoid aluminum alloy tarnishing, and is environmentally friendly. The application further provides a preparation method and application of the aluminum alloy cleaning agent.

The application discloses a marine-derived cholesterol oxidase and a preparation method and application thereof, and relates to the technical field of biology. The amino acid sequence of the marine-derived cholesterol oxidase (SkChOx) is shown in SEQ ID NO. 1 or 3, the specific enzyme activity of the marine-derived cholesterol oxidase can reach 31.9 U / mg, the marine-derived cholesterol oxidase has excellent anti-reverse performance, maintains high stability in the pH range of 5.0-10.0, has good temperature tolerance, organic solvent tolerance and metal ion tolerance, and exhibits unique salt activation effect and salt tolerance. The enzyme is compounded with dithiothreitol (DTT) and nonylphenol polyoxyethylene ether (NP-40) to form a liquid enzyme preparation, and after incubation at 37 DEG C for 7 days under accelerated conditions, the catalytic activity of the liquid enzyme preparation still remains about 87%, the liquid enzyme preparation has excellent long-acting storage stability, and has wide application prospects in the fields of clinical diagnosis, food physical and chemical inspection, biosensor development and industrial preparation of steroid drugs.

The present application relates to a green concrete which fully utilizes stone chips as fine aggregate and a preparation method thereof, which comprises the following components and their weight parts: 75-80 parts of cement, 9-10 parts of fly ash, 215-220 parts of coarse aggregate, 155-165 parts of stone chips, 2-5 parts of universal water reducer and 40-55 parts of water; the universal water reducer comprises the following components and their contents: 14-18% of polycarboxylic acid water reducing mother liquor, 11-15% of polycarboxylic acid comprehensive mother liquor, 3-5% of polycarboxylic acid slump retaining mother liquor, 3-4% retarder, 0.15-0.2% air entraining agent, 2-4% thickener, 0.01-0.1% viscosity modifier, and the balance is water; the polycarboxylic acid water-reducing mother liquor includes a quaternary ammonium salt water reducer, potassium nitrate, diethylenetriamine pentasodium methylenephosphonate and water in a mass ratio of 1: (0.8-1.1): (4-6): (12-14); the quaternary ammonium salt water reducer is obtained by polymerization of epichlorohydrin-diethanolamine copolymer, dimethyl butynedioate and nonylphenol polyglycol ether. The application can make concrete with stone chips as fine aggregate have better strength, fluidity and collapse retention performance.

The invention relates to a composite destabilization inhibitor for an alkali-surfactant-polymer flooding produced liquid transition layer and application. The composite destabilization inhibitor comprises a component A, a component B and a component C in a mass ratio of 1: (1-3): (1-3), the component A comprises fatty alcohol-polyoxyethylene ether, nonylphenol polyoxyethylene ether sodium phosphate and a solvent; the component B comprises cationic polyamine and a solvent; the component C comprises hyperbranched polyamide, a hyperbranched polyether type nonionic surfactant and a solvent; the composite destabilization inhibitor for the three-component combination flooding produced liquid transition layer is applied to treatment of the three-component combination flooding produced liquid transition layer. The composite destabilization inhibitor has the characteristics that the compounding process is simple, the raw materials are easy to obtain, the transition layer inhibition effect is obvious, the dehydration is thorough, the running current and the water content of crude oil are greatly reduced, and the like, is used for the two-stage electric dehydrator of the alkali-surfactant-polymer flooding produced liquid, and can improve the quality of output oil, reduce the amount of the transition layer and reduce the cost.

This invention provides an environmentally friendly, high-performance waterborne acrylic pressure-sensitive adhesive and its preparation method. The raw materials, by weight, include: 75-105 parts monomer, 1-5 parts functional monomer, 0.3-0.8 parts initiator, 0.05-0.2 parts buffer, 0.01-0.1 parts molecular weight regulator, 0.3-3 parts emulsifier, 0.05-0.5 parts defoamer, 0.05-0.2 parts pH adjuster, and 80-100 parts deionized water. The prepared pressure-sensitive adhesive is nonylphenol-free and meets RoHS and REACH standards. It exhibits high bonding strength and transparency, and can be used to prepare various transparent, printed, and colored BOPP packaging tapes, various double-sided tapes, and various labels.

This invention belongs to the field of packaging and printing materials, specifically relating to a high-temperature resistant water-based micro-crosslinked transfer coating. The raw materials for this high-temperature resistant water-based micro-crosslinked transfer coating consist of the following components: methacrylic acid, N-hydroxymethylacrylamide, butyl acrylate, methyl methacrylate, diallyl phthalate, 1,6-hexanediol diacrylate, tricyclodecanedimethylol diacrylate, trimethylolpropane triacrylate, di(trimethylolpropane)tetraacrylate, potassium persulfate, sodium bicarbonate, alkylphenol polyoxyethylene ether ammonium sulfate, nonylphenol polyoxyethylene ether, deionized water, ethanol, ammonia, wetting agent, defoamer, and film-forming agent. Its beneficial effects include a stable reaction process during the preparation of this high-temperature resistant water-based micro-crosslinked transfer coating, reducing the likelihood of slag formation or explosive polymerization; high gloss in the coating film; good adhesion to vacuum metallization; minimal fogging or whitening; high-temperature molding resistance up to 180℃; and easy peeling of PET film with a high yield.

The application relates to a grinding aid and a preparation method and application thereof, the grinding aid comprising a to-be-treated solution and a surfactant; the to-be-treated solution contains sodium acrylate, sodium hydroxide and sodium p-toluenesulfonate; and the surfactant comprises at least one of sodium dodecyl benzene sulfonate, sodium lignosulfonate, allyl polyether, fatty alcohol polyoxyethylene ether, alkyl phenol polyoxyethylene ether and nonyl phenol polyoxyethylene ether. The specific surfactant in the grinding aid cooperates with the to-be-treated solution, synergistically improves the interface wetting performance of the material, weakens the powder aggregation phenomenon, reduces the surface energy, and further improves the dispersibility of the material and the gradation and fluidity of the material.

The application relates to the field of immunohistochemical staining, in particular to a DAB buffer and a DAB staining solution kit for DAB color development. The application discloses a DAB buffer for DAB color development, and the main components are hydrogen peroxide, nonylphenol polyoxyethylene ether, magnesium sulfate and trisodium citrate. The metal ions in the DAB buffer can enhance the electron transfer speed between DAB and hydrogen peroxide, and improve the color development sensitivity. The nonylphenol polyoxyethylene ether can stabilize the hydrogen peroxide, so that the hydrogen peroxide can be stored for a longer time and the cost is saved. The application further discloses a DAB staining solution kit, which comprises a blocking agent, a reaction enhancer, an enzyme-labeled polymer IgG, a DAB concentrated solution, a DAB buffer and hematoxylin, and the above-mentioned DAB buffer for DAB color development. The DAB staining solution kit of the application can improve the detection sensitivity of immunohistochemical staining, and can also improve the storage stability of the DAB color development solution and reduce the cost.

The invention discloses modified impact-resistant ACR for polyvinyl chloride and a preparation method of the modified impact-resistant ACR, and relates to the field of impact-resistant modifiers. The modified impact-resistant ACR is prepared from the following raw materials: methyl methacrylate, butyl acrylate, 2-ethylhexyl acrylate, glycidyl methacrylate, acrylamide, divinyl benzene, maleic anhydride grafted nitrile rubber, methacrylic acid, an initiator, an emulsifier and a catalyst; the maleic anhydride grafted nitrile rubber is obtained by graft polymerization of maleic anhydride and nitrile rubber; the emulsifier is obtained by mixing lauryl sodium sulfate and nonylphenol polyoxyethylene ether. The preparation method of the modified impact-resistant ACR comprises the following steps: preparing maleic anhydride grafted nitrile rubber, preparing a pre-emulsion, carrying out emulsion polymerization, and preparing the modified impact-resistant ACR. The modified impact-resistant ACR prepared by the invention can effectively enhance the low-temperature notch impact strength and ultraviolet aging resistance of polyvinyl chloride.

The invention belongs to the technical field of biology, and relates to a bacterial positive chemotactic substance. The invention provides a pentapeptide, an engineering bacterium and application of the pentapeptide to improvement of chemotaxis and nonyl phenol degradation capacity of microorganisms. The application proves that the nonyl phenol (4-NP) can be used as a positive chemotactic substance of the bacteria, in particular to the Pseudoxantha mexicana bacteria, and the nonyl phenol (4-NP) can be used as a positive chemotactic substance of the bacteria. The application also explores a chemotactic receptor and a chemotactic pentapeptide of the Pseudoxanthomonas mexicana bacterium, proves that the Mcp24 protein with the ID number of WP187572790.1 is the chemotactic receptor of the nonyl phenol (4-NP), and further determines that the L38-A320 of the protein is the binding domain of the chemotactic receptor of the nonyl phenol (4-NP); the engineering bacterium with enhanced chemotactic property is obtained by grafting the pentapeptide DWQEF to the tail end of a 4-NP chemotactic receptor of P.mesicana.

The present invention relates to systems and methods for catalytic removal of oxidized contaminants (for example, nitrite, chromate, chlorate, trichloroethene, CFC-11, 4-nonylphenol, RDX, and perfluorooctanoate) from water and wastewater. In some aspects, the catalytic method of removing oxidized contaminants comprises using precious metal nanoparticles as catalysts to reduce the oxidized contaminants.

The invention provides a silicon nitride green body and a preparation method and application thereof.The silicon nitride green body comprises silicon nitride powder, a penetrating agent and a wetting agent, the penetrating agent comprises at least one of fatty alcohol-polyoxyethylene ether and nonylphenol polyoxyethylene ether, the wetting agent comprises at least one of glyceryl trioleate, glyceryl monooleate and polyoxyethylene ester, and the silicon nitride green body comprises silicon nitride powder, silicon nitride powder and silicon nitride powder. The total mass of the wetting agent and the penetrating agent is greater than or equal to 1% of the mass of the silicon nitride powder. Due to the special composition of the silicon nitride green body, the problems of warping, wrinkling and cracking can be effectively reduced while the high solid content is maintained.