80 results about "Dimethyldiazene" patented technology

The invention relates to the technical field of oilfield chemistry, and discloses a graft modified cellulose filtrate reducer and a preparation method thereof.The preparation method comprises the following steps that modified hydroxyethyl cellulose, 2-acrylamide-2-methyl propane sulfonic acid, dimethyl diallyl ammonium chloride, alkenylated cardanol and N, N '-methylene bisacrylamide are added into deionized water, stirring is conducted, and a mixture is obtained; the preparation method comprises the following steps: adding cellulose into a reaction kettle, stirring for 10-15 minutes at the temperature of 40-60 DEG C at the speed of 300-400 rpm, dropwise adding ammonium persulfate and sodium hydrogen sulfite into a system, and continuously reacting for 4-6 hours to obtain the grafted modified cellulose filtrate reducer. The filtrate reducer disclosed by the invention has good high temperature resistance and salt resistance.

The invention belongs to the technical field of petroleum drilling engineering, and discloses a chitosan-quaternary ammonium salt modified composite shale inhibitor and a preparation method thereof. According to the inhibitor, natural chitosan is used as a main chain, dimethyl diallyl ammonium chloride (DMDAAC) is adopted for free radical grafting modification, glycine is combined as a synergistic auxiliary agent, and a composite structure with high cation density is constructed. The preparation method comprises the following steps: dissolving 15-25 parts of chitosan in 1000 parts of 1% glacial acetic acid, and stirring at room temperature; dropwise adding 2 to 4 parts of DMDAAC, reacting at 65 to 75 DEG C, and then adding 0.1 to 1 part of ammonium persulfate for grafting for 3.5 to 4.5 hours; and cooling, filtering and drying to obtain powder. And dissolving 10-20 parts of the solution in deionized water, adding 1.5-2.5 parts of glycine, and uniformly mixing to obtain the composite inhibition liquid. The inhibitor has good water solubility and thermal stability, can significantly inhibit shale hydration expansion and particle dispersion, and experiments show that the inhibitor can be suitable for well wall stability control of complex stratums such as high-temperature deep wells and the like, and has good field adaptability and industrial popularization value.

The invention provides a natural polymer shear strength improving agent for temperature-resistant tackifying water-based drilling fluid as well as a preparation method and application of the natural polymer shear strength improving agent. The shear strength improving agent is prepared from the following raw materials in parts by mass: 1 to 7 parts of carboxymethyl starch, 1 to 5 parts of 2-acrylamido-2-methylpropanesulfonic acid, 1 to 5 parts of dimethyl diallyl ammonium chloride, 1 to 5 parts of N-vinyl pyrrolidone, 1 to 5 parts of acrylamide, 0.01 to 0.05 part of an initiator I, 0.01 to 0.05 part of an initiator II, 0.01 to 0.07 part of a cross-linking agent epoxy chloropropane, 50 to 70 parts of water and 150 to 220 parts of absolute ethyl alcohol. According to the shear strength improving agent, natural high polymer materials are used, a polymer net structure is formed through polymerization reaction, the cross-linking agent is used for promoting the net structure to be tighter for tackifying, and the shear strength improving agent has better thermal stability, dynamic shear force, flocculation capacity and suspension stability while the cost and the environmental load are reduced.

The invention discloses a plant ash loaded cation modified chitosan-polyacrylamide efficient sludge dehydrating agent as well as a preparation method and application thereof, and belongs to the technical field of sludge dehydration. The preparation method of the efficient sludge dehydrating agent comprises the following steps: firstly, carrying out cationic grafting modification on chitosan by adopting dimethyl diallyl ammonium chloride, and then introducing the cationic grafting modified chitosan and polyacrylamide into the surface of plant ash, so that the surface of the plant ash is obviously changed; and a discontinuous, multi-gap, disordered and irregular multi-layer structure is presented. The specific surface area of the plant ash is increased by introducing the cationic grafting modified chitosan and the polyacrylamide, and the complex surface structure is beneficial for the plant ash to generate gaps which are difficult to compress in a sludge filter cake in the sludge dewatering process, so that the dewatering performance of the sludge is improved.

The invention discloses polyacrylamide for a screw press of a pulp paper plant. The polyacrylamide is prepared from the following components in parts by weight: 3 to 10 parts of acrylamide, 1 to 6 parts of 2-acrylamido-2-methylpropanesulfonic acid, 0.1 to 3 parts of dimethyl diallyl ammonium chloride, 0.01 to 1 part of hydrophobic modifier, 0.01 to 0.5 part of cross-linking agent and 0.001 to 0.01 part of initiator. The invention also discloses a preparation method of the polyacrylamide. According to the invention, through copolymerization of the composite acrylamide and the salt-resistant monomer and combination of cross-linking modification, the salt resistance, shear resistance and floc strength of polyacrylamide are improved. By introducing hydrophobic groups, the adhesiveness of the filtrate is reduced, backmixing of the squeezed filtrate is reduced, and the dehydration speed and the floc stability are balanced.

The present invention relates to the technical field of polyaluminium chloride water purifiers, specifically discloses a water purifier based on polyaluminium chloride and a preparation method thereof, the water purifier is made by mixing polyaluminium chloride magnesium silicate composite solution, modified starch modified chitosan composite solution and magnetized active kaolin, ultrasonic dispersion, slaking and drying; wherein polyaluminium chloride magnesium silicate composite solution is made of aluminium chloride, magnesium chloride hexahydrate and trichloroethylsilane; modified starch modified chitosan composite solution is made of starch modified by dimethyl diallyl ammonium chloride and acrylamide, and chitosan modified by diethyltriamine pentaacetic acid; magnetized active kaolin is made of ferric chloride hexahydrate, sodium silicate and acidified kaolin. The water purifier of the present invention contains a variety of efficient flocculation adsorption components, not only has the function of traditional polyaluminium chloride mesh sweeping, but also can synchronously and efficiently remove pollutants such as ammonia nitrogen, total phosphorus, COD and suspended matter in water.

The invention discloses an N-region etching structure of a TBC battery, an etching additive and an etching polishing solution. The additive comprises the following components in percentage by mass: 0.5-1% of a selective inhibitor, 0.5-1% of a defoaming agent, 1-1.5% of a dispersing agent, 0.5-1% of a stabilizer and the balance of deionized water, wherein the selective inhibitor is a dimethyl diallyl ammonium chloride-acrylamide copolymer. The additive disclosed by the invention is applied to an N-region selective etching process of a TBC battery, and an included angle between a {111} surface and a {100} surface of a silicon crystal can be changed into a vertical morphology from a traditional 54.7-degree single inclined surface, so that the transverse transmission distance of a hole is obviously shortened, the width of a GAP region can be further reduced, and the effective light receiving area is improved, thereby obviously improving the efficiency.

The invention relates to a degerming and anti-mite finishing agent for down feather and a preparation method of the degerming and anti-mite finishing agent, and belongs to the technical field of down feather processing.The degerming and anti-mite finishing agent is prepared from, by weight, 8-12 parts of plant antibacterial liquid, 2-4 parts of dimethyl diallyl ammonium chloride, 1-3 parts of polyethylene glycol and 40-50 parts of water, the plant antibacterial liquid is a mixed liquid of silver birch juice and a moringa seed extract, and the moringa seed extract is obtained by mixing moringa seeds and sugarcane according to the mass ratio of 1: (4-6) and fermenting. According to the sterilizing and anti-mite finishing agent for the down feather and the preparation method of the sterilizing and anti-mite finishing agent, the silver birch juice and the moringa seed extract are contained in the finishing agent, and after the finishing agent acts on the down feather, the antibacterial property, the filling power and the moisture resistance of the down feather can be effectively improved, so that the down feather can maintain a long-acting antibacterial effect.

The invention belongs to the technical field of emulsion polymerization, and particularly discloses super-water-resistant cationic latex and a preparation method thereof. The invention discloses super water-resistant cationic latex. Comprising the following raw materials: deionized water, a hydrochloric acid solution, an emulsifier QT-03, an N-tallow trimethylene diamine quick-cracking emulsifier, a dimethyl diallyl ammonium chloride solution, a methacryloyloxyethyl trimethyl ammonium chloride solution, styrene, methyl methacrylate, butyl acrylate, diacetone acrylamide, azobis (isobutylamidine hydrochloride) and a defoaming agent. And adipic acid dihydrazide. According to the invention, a diacetone acrylamide-oxalic acid dihydrazide DAAM-ADH ketone hydrazine crosslinking system is utilized, and an oleamide QT-03 emulsifier is adopted, so that the green and environment-friendly room-temperature self-crosslinking type super-water-resistant cationic latex is synthesized.

The invention belongs to the technical field of textile dyeing and finishing production, and discloses a cationic color fixing agent and a preparation method thereof.The cationic color fixing agent is obtained by conducting self-polymerization on dimethyl diallyl ammonium chloride and then conducting cross-linking, and in the cross-linking process, the mass ratio of a dimethyl diallyl ammonium chloride self-polymer to a cross-linking agent is 70-80: 1-4; the cross-linking agent is selected from at least one of pentaerythritol triallyl ether, methyl triallyl silane, tetraallyl silane and triallyl (phenyl) silane, the molecular weight of the cationic monomer is firstly increased by synthesizing the self-polymer, and then cross-linking is performed, so that the gel risk is reduced.

The invention discloses a preparation method of a photocatalytic material for wastewater treatment, and belongs to the technical field of photocatalytic materials. The preparation method specifically comprises the following steps: S1, preparing TiO2 (at) GaP (at) Fe2O3; s2, absolute ethyl alcohol is added into TiO2 (at) GaP (at) Fe2O3, dimethyl diallyl ammonium chloride, modified graphene oxide and a silane coupling agent are added after ultrasonic dispersion, and after sufficient dispersion, a photocatalytic material is obtained through drying; the modified graphene oxide is graphene oxide grafted with disulfide bonds and polyacrylic acid. TiO2 is modified through GaP, ferric oxide powder, dimethyl diallyl ammonium chloride and modified graphene oxide, the photocatalytic material for wastewater treatment is obtained, and the photocatalytic material has high photocatalytic performance on wastewater containing methylene blue and / or rhodamine B under natural sunlight; meanwhile, the high photocatalytic performance is still kept after multiple times of recycling.

The application belongs to the technical field of organic synthesis, and specifically discloses a preparation method of dimethyl diallyl ammonium chloride, which comprises the following steps: under the condition that water exists, dimethylamine, an alkaline carrier and allyl chloride are mixed and subjected to a contact reaction to obtain a crude tertiary amine; the alkaline carrier comprises a carrier body and a carbonic acid alkali metal salt loaded on the carrier body; under the condition that an organic solvent exists, the crude tertiary amine and allyl chloride are mixed and subjected to a contact reaction. The method can effectively reduce the hydrolysis of allyl chloride and the generation of dimethylamine hydrochloride in the reaction process, the dimethyl diallyl ammonium chloride product contains almost no other hydrochloride impurities, and the reaction efficiency, the yield and the purity of the dimethyl diallyl ammonium chloride are improved.

The application discloses a kind of photovoltaic glass self-cleaning nano coating and its processing method, for crosslinking grafting on the surface of photovoltaic glass to control water contact angle less than 0.3 °, it is related to photovoltaic maintenance technical field, the photovoltaic glass self-cleaning nano coating includes mesoporous silica, epoxy group polyether, dimethyl diallyl ammonium chloride, enamine, ethyl chloroacetate, crosslinking agent, initiator, silane coupling agent.The application has the photovoltaic glass self-cleaning nano coating of water contact angle less than 0.3 ° formed on the surface of photovoltaic glass, so that water film spread on the surface of photovoltaic glass is separated from the photovoltaic glass self-cleaning nano coating by contaminant, and then the effect of removing contaminant is carried out by using gravity and / or wind power to drive water film to move.

The invention provides a high-transmittance coating liquid as well as a preparation method and application thereof. The high-transmittance coating liquid is prepared from monomers, an initiator and silica sol, the monomers comprise basic monomers and cationic monomers, the basic monomers comprise at least two of butyl acrylate, styrene, methyl methacrylate, acrylic acid, hydroxyethyl methylacrylate and hydroxyethyl acrylate, and the cationic monomers comprise at least two of butyl acrylate, styrene, methyl methacrylate, acrylic acid, hydroxyethyl methylacrylate and hydroxyethyl acrylate. The cationic monomer comprises at least one of methacryloyloxyethyl trimethyl ammonium chloride, dimethyl diallyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride and methacrylamidopropyl trimethyl ammonium chloride. Through the synergistic effect of the basic monomer and the cationic monomer, the light transmittance gain of the photovoltaic glass is greater than or equal to 2.4%, the pencil hardness of a film layer is greater than or equal to 3H (the pencil hardness can reach 4H or above after a binding phase is introduced), the adhesive force is less than or equal to level 1, and the contradiction of dual performance requirements is solved. The invention further provides a preparation method and application of the high-transmittance coating liquid.

The invention provides a beta-cyclodextrin coagulant aid as well as a preparation method and application thereof, and belongs to the technical field of environment and chemistry. The preparation method of the beta-cyclodextrin coagulant aid comprises the following steps: adding beta-cyclodextrin and acrylic acid into a first solvent for esterification reaction to obtain a first polymer; adding the first polymer and dimethyl diallyl ammonium chloride into a second solvent, and adding an initiator for polymerization reaction to obtain a second polymer; and adding the second polymer, sodium trifluoromethanesulfinate and sodium bromate into a third solvent, and carrying out nucleophilic substitution reaction to obtain the beta-cyclodextrin coagulant aid.

This invention provides a clay stabilizer and its preparation method. First, a low molecular weight polymer is obtained by polymerizing acrylate, acrylamide, and dimethyl diallyl ammonium chloride in an aqueous solution. Then, an amidation reaction is carried out with enamine or alkyl diamine to obtain the clay stabilizer. This clay stabilizer has the advantages of good anti-swelling effect and long-lasting effect, effectively preventing clay particle migration, good temperature resistance, not increasing formation water salinity, and increasing formation permeability. The anti-swelling rate is ≥95%, the anti-swelling rate after aging at 350℃ is ≥90%, the water washing resistance rate is ≥97%, the core permeability recovery rate is ≥85%, and the core permeability retention rate is ≥90%.

The invention provides a conditioner for sludge dewatering as well as a preparation method and application thereof, and relates to the technical field of sludge treatment. The conditioner for sludge dewatering is prepared from the following components in parts by weight: 0.3 to 0.4 part of acrylamide, 25 to 30 parts of trimethylallylammonium chloride, 65 to 70 parts of dimethyl diallyl ammonium chloride, 1.0 to 2.0 parts of a surfactant, 1.1 to 1.8 parts of a photoinitiator and 150 to 170 parts of deionized water. By avoiding the use of a large amount of inorganic coagulant and lime, the combustion value of the sludge is kept, the water content of the sludge is lower than 50%, incineration treatment of a power plant is facilitated, and green emission is achieved. The conditioner is neutral and small in dosage, corrosion to the filter cloth is avoided, blockage of the filter cloth is reduced under the promotion action of the surfactant, sludge can be conveniently stripped from the filter cloth, the service life of equipment is prolonged, and the use cost of the conditioner, the transportation cost of the sludge and the operation cost of the plate and frame desliming machine are reduced.

The application relates to the technical field of printing and dyeing fixing agents, and particularly discloses a formaldehyde-free fixing agent and a preparation method thereof. The formaldehyde-free fixing agent is prepared from raw materials in the following proportions by weight: dimethyl diallyl ammonium chloride 81-162 parts; acrylamide 9-18 parts; ammonium persulfate 5-7 parts; epichlorohydrin 55-105 parts; tetraethylenepentamine 9-18 parts; triethylamine 4.5-9 parts; dimethylamine 9-18 parts; water 90-120 parts; triallylamine 0.5-1 part; the dimethyl diallyl ammonium chloride, the acrylamide, the ammonium persulfate and the epichlorohydrin are used for preparing product A; the tetraethylenepentamine, the triethylamine, the dimethylamine and the epichlorohydrin are used for preparing product B; the product A, the product B, the water and the triallylamine are mixed to obtain the formaldehyde-free fixing agent. The formaldehyde-free fixing agent of the application can balance the permeability and the reaction film-forming property after application, and has excellent fixing performance.

The invention relates to the technical field of fluorine removal agents, in particular to an adsorption type fluorine removal agent based on a nanometer material and a preparation method of the adsorption type fluorine removal agent. The invention provides an adsorption type fluorine removal agent based on a nanometer material. The adsorption type fluorine removal agent comprises the following raw materials in parts by weight: 9-15 parts of nanometer aluminum oxide; 15-25 parts of inorganic acid; 2-5 parts of a cationic surface active agent; and 60-70 parts of water. The cationic surfactant (such as one or a mixture of two of dimethyl diallyl ammonium chloride or dimethylaminoethyl methacrylate) and the inorganic acid are added into the aluminum oxide fluorine removal agent, so that the adsorption and flocculation capacities of aluminum oxide can be improved, and the defect that the fluoride removal rate of a traditional fluorine removal agent is insufficient is overcome economically and effectively.

This invention belongs to the technical field of stirring equipment, and specifically relates to a stirring device for dissolving high-viscosity polydimethyldiallyl ammonium chloride, which includes an isolating stirring element, a stirring assembly, and a stirring tank; the internal space of the stirring tank is a main chamber for storing materials; the isolating stirring element divides the main chamber into a first sub-chamber and a second sub-chamber, and the stirring assembly is disposed in the first sub-chamber, so that the stirring assembly can fully stir the materials in the first sub-chamber; the isolating stirring element has different working states, and by changing the working state of the isolating stirring element, the materials in the first sub-chamber and the second sub-chamber can be interchanged, so that the materials in the main chamber are fully stirred.

The application discloses an organic-inorganic hybrid formaldehyde-free fixing agent and a preparation method and application thereof, and belongs to the technical field of textile auxiliaries. The fixing agent is prepared by using dimethyl diallyl ammonium chloride and methacryloyloxyethyl trimethyl ammonium chloride as reaction monomers, N-vinyl pyrrolidone as an organic modifier, and trisodium phosphate and bismuth nitrate as inorganic modifiers, and the organic-inorganic hybrid crosslinking structure is formed through a polymerization reaction. The preparation method comprises the following steps: pre-complexing bismuth nitrate and citric acid, pre-activating a silane coupling agent, mixing the components, and then performing stage pH regulation, ultrasonic-assisted dispersion, high-temperature curing and other steps. The fixing agent is prepared by means of coordination crosslinking of an organic polymer chain and bismuth ions and covalent connection of a silane coupling agent, so that a double network structure is formed, the wet rubbing fastness and the soaping fastness are significantly improved, the fabric is endowed with antibacterial and ultraviolet resistance functions, the hydrophilicity and the hand feeling are improved, and the fixing agent does not contain formaldehyde, and can be widely applied to post-treatment of textile dyeing.

The invention belongs to the field of organic synthesis, and discloses a hyperbranched formaldehyde-free fastness improver, which is prepared from the following raw materials: hyperbranched polyamidoamine (HPAMAM), dimethyl diallyl ammonium chloride (DMDAAC), diallyl amine and polyether amine. The mass ratio of the hyperbranched polyamidoamine to the dimethyl diallyl ammonium chloride to the diallyl amine to the polyether amine is (5-10): (30-50): (5-15): (5-10); the number of terminal amino groups and imino groups of the hyperbranched polyamidoamine is 15-17. According to the fastness improver, hyperbranched polyamidoamine is taken as a core, DMDAAC and diallylamine are grafted to a hyperbranched structure, a high-density cation and flexible chain segment synergistic system is constructed, the performance bottleneck of a traditional formaldehyde-free auxiliary in the aspect of wet rubbing fastness is broken through, the wet rubbing fastness of sensitive colors such as bright red and turquoise blue is remarkably improved, and the color fastness improver has a wide application prospect. Meanwhile, the advantages of being environmentally friendly, soft, hydrophilic and the like are kept, and the method has a good industrialization prospect.

The invention discloses ionic gel with high conductivity and high mechanical strength, a preparation method of the ionic gel and a sensor, relates to the technical field of intelligent high polymer materials, and aims to solve the problem that ionic gel with high conductivity and good mechanical performance is lacked in the prior art. The technical key points of the invention are as follows: the ionic gel is prepared from an acrylic acid monomer, a quaternary ammonium salt monomer, an acrylamide monomer, an acrylamide monomer cross-linking agent and an initiator, the acrylic acid monomer is selected from one or more of acrylic acid or methacrylic acid, and the quaternary ammonium salt monomer is selected from one or more of acrylic acid and methacrylic acid. The quaternary ammonium salt monomer is selected from one or more of choline chloride, acryloyloxyethyl trimethyl ammonium chloride, methacryloyloxyethyl trimethyl ammonium chloride or dimethyl diallyl ammonium chloride, and the acrylamide monomer is selected from methacrylamide. The high-conductivity and high-mechanical-strength ionic gel disclosed by the invention can be used for preparing a flexible sensor.

The invention discloses a preparation method of an antibacterial epoxy resin coating, and relates to the technical field of coatings. According to the invention, the 5-phenylpent-2, 4-dienoic acid is esterified and combined with the side chain of the epoxy resin, so that the hardness and heat resistance of the cured coating are improved; then addition reaction with dimethyl diallyl ammonium chloride, 2-acrylamide phenylboronic acid and the modified antibacterial agent is performed to form a three-dimensional network structure, so that the mechanical strength of the coating is remarkably enhanced, the antibacterial, high-adhesion and anti-stripping effects are achieved, a phenylboronic acid structure is assisted, a protective film is formed on the surface of an object, the object is effectively isolated from the external environment, and the service life of the coating is prolonged. Oxidation and corrosion of the object surface are prevented, and the corrosion-resistant effect is achieved. According to the modified antibacterial agent, S-adenosine-L-homocysteine and silver nitrate are subjected to a coordination reaction, and the antibacterial effect is achieved; then, the silicon dioxide is combined with vinyl trichlorosilane, silane groups are introduced, after curing, the mechanical strength and water resistance of the coating are remarkably enhanced, corrosive liquid is prevented from entering the coating, and the corrosion-resistant effect is indirectly improved.

The invention provides a bio-based cationic surfactant and a preparation method thereof.The bio-based cationic surfactant is a copolymer and is prepared from raw materials including, by mass, 10-30 parts of glucose acrylate, 20-40 parts of dimethyl diallyl ammonium chloride, 15-35 parts of methacryloyloxyethyl trimethyl ammonium chloride, 5-10 parts of sodium hydroxide, 5-10 parts of sodium hydroxide, 5-10 parts of sodium hydroxide, 5-10 parts of sodium hydroxide, 5-10 parts of sodium hydroxide and 5-10 parts of sodium hydroxide through a copolymerization reaction. The adhesive comprises, by mass, 10-25 parts of glucose acrylate, 10-25 parts of dimethyl diallyl ammonium chloride, 10-25 parts of methylacryloyloxyethyl trimethyl ammonium chloride, 10-25 parts of diallylamine hydrochloride and an initiator, and the addition amount of the initiator is 0.5%-5% of the total mass of glucose acrylate, dimethyl diallyl ammonium chloride, methylacryloyloxyethyl trimethyl ammonium chloride and diallylamine hydrochloride. The preparation method comprises the steps of preparing acrylic acid glucose ester and carrying out water-phase copolymerization reaction. According to the invention, the strong pollutant adsorption capacity brought by high cationic degree and the broad-spectrum water purification efficiency brought by the synergistic effect of multiple functional groups are realized at the same time.

The invention relates to the technical field of aqueous zinc ion batteries, and particularly discloses a modified zinc powder negative electrode containing dimethyl diallyl ammonium chloride and a preparation method of the modified zinc powder negative electrode. Dimethyl diallyl ammonium chloride serves as a functional additive and is used for modifying zinc powder added into corrosion inhibitors such as bismuth oxide (Bi2O3), and the zinc powder negative electrode stable in circulation is constructed. The dimethyl diallyl ammonium chloride is an ionic surface active agent with high charge density and has certain bonding performance. Meanwhile, the material has the advantages of high stability, low toxicity, low cost and the like, can be used as a key material for developing and improving the cycling stability of a zinc powder negative electrode, and provides a new solution for large-scale production of aqueous zinc ion batteries.

The present application relates to a kind of oil-permeable water-blocking film-coated quartz sand for fracturing and its preparation method, and the oil-permeable water-blocking film-coated quartz sand for fracturing is three-layer core-shell structure, core is amino silane coupling agent modified quartz sand, middle layer is thermosetting epoxy resin, and outer layer is functional polymer layer;Preparation raw materials of middle layer include epoxy resin A, multifunctional epoxy resin, epoxy resin with double bond and amino resin, the epoxy resin A is selected from at least one in bisphenol type epoxy resin, phenolic epoxy resin;Preparation raw materials of outer layer include (Methyl) propenoic acid C6-C10 alkyl ester, fluorine-containing propenoic acid ester, isobornyl acrylate, dimethyl-diallyl ammonium chloride, bis (3-trimethoxysilylpropyl) fumarate.Solve the defect that the interface bonding force of resin layer and quartz sand matrix of film-coated quartz sand in prior art is insufficient, improve the interface bonding capacity, with excellent oil-permeable water-blocking performance and high temperature and high pressure resistance.

The invention provides a broad-spectrum anti-interference water treatment flocculant and an application method thereof, and the broad-spectrum anti-interference water treatment flocculant comprises the following raw materials by mass: 15-25% of a quaternary ammonium salt type cationic polymer; 25 to 35% of modified polyacrylamide containing an acylamino group; 45-50% of polymeric ferric silicate sulfate; wherein the quaternary ammonium salt type cationic polymer is cationic polyacrylamide which is polymerized by taking dimethyl diallyl ammonium chloride as a main monomer; the modified polyacrylamide is zwitterionic polyacrylamide. According to the water treatment flocculant disclosed by the invention, through the synergistic effect of the three components, the problem that a traditional flocculant loses efficacy under the conditions of a high-salt environment, a wide pH range and high organic matter content is effectively solved.

The invention relates to a method for co-processing fracturing waste liquid and petroleum produced water, and relates to the technical field of water treatment. The method comprises the following steps: carrying out hardness removal treatment on the fracturing waste liquid, wherein the calcium ion concentration of the treated fracturing waste liquid is 28.5-165 mg / L, and the pH value is 9.0-11.0; and uniformly mixing the fracturing waste liquid subjected to hardness removal with petroleum produced water according to a volume ratio of (1-9): (9-1), sequentially adding an inorganic flocculant and an organic flocculant, and filtering after flocculating settling to obtain reinjection water. The inorganic flocculant is at least one of polyaluminum chloride and polyferric sulfate; the organic flocculating agent is at least one of cationic polyacrylamide and poly dimethyl diallyl ammonium chloride. According to the method, the fracturing waste liquid and the petroleum produced water are used for cooperative treatment, the treatment cost is reduced, the suspended matter content and the oil content in the treated water are lower than 5.0 mg / L and 3.0 mg / L respectively, and the scaling amount is lower than 20 mg / L.