118 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 relates to a preparation method and application of an inner-rigid outer-soft core-shell structure silicon dioxide blocking agent for marine drilling fluid, and belongs to the field of deepwater oil and gas drilling. N-vinyl-2-pyrrolidone, dimethyl diallyl ammonium chloride, acrylamide and 2-acrylamide-2-methylpropanesulfonic acid are polymerized and grafted on the surface of nano silicon dioxide to form the silicon dioxide blocking agent with a core-shell structure and a rigid inside and a soft outside; by means of rigid plugging of a nano material and deformation filling flexible plugging of a high-molecular polymer, shale micro-nano pores are efficiently plugged with rigid inside and flexible outside, so that the stability of a well wall is maintained, meanwhile, secondary generation of hydrates is effectively inhibited, and the safety and efficiency of deepwater drilling are improved; the plugging agent provided by the invention reduces the demand on a large number of thermodynamic inhibitors, not only saves the cost, but also has the characteristic of environmental protection.

The invention relates to the technical field of emergency treatment of marine ecological disasters, and provides an algae remover for emergency treatment of red tide and a preparation method of the algae remover. The algae remover comprises the following raw materials in parts by weight: 70-90 parts of clay, 10-40 parts of an inorganic flocculant and 0.02-1 part of an organic flocculant. The organic flocculating agent comprises poly dimethyl diallyl ammonium chloride and polyvinyl alcohol; the mass ratio of the poly dimethyl diallyl ammonium chloride to the polyvinyl alcohol is 10: (1-8). According to the technical scheme, the problem of low red tide organism removal rate of an algae remover in related technologies is solved.

The invention discloses a production process of an efficient polyaluminum chloride-based composite flocculant, which includes adding tourmaline into ethanol for low-temperature ball milling treatment to obtain tourmaline fine powder; performing low-temperature grinding treatment on vermiculite, then successively adding tourmaline, aluminum isopropoxide and trichloromethylsilane and stirring, and obtaining a prefabricated vermiculite carrier after dispersion and granulation; standing the prefabricated vermiculite carrier for 1-2 h, then standing at a constant temperature for 3-5 h, then soaking it in an alkali solution for 20-30 min, performing ultrasonic treatment for 5-10 min, filtering and sintering to obtain porous mixed vermiculite; mixing dimethyldiallylammonium chloride and polyaluminum chloride evenly, then putting them into the porous mixed vermiculite and stirring evenly, then performing microwave oscillation treatment for 1-2 h, taking out the porous mixed vermiculite particles, which are the prefabricated flocculant; standing the prefabricated flocculant for 1-2 h, and obtaining an efficient flocculant after freeze-drying. The invention utilizes vermiculite to improve the sedimentation characteristics of the flocculant, combines with the negative ion adsorption of tourmaline, aggregates the flocs of dimethyldiallylammonium chloride and polyaluminum chloride, reduces the dispersion problem of the flocs, and achieves the balance of adsorption, sedimentation and flocculation.

The invention relates to the technical field of water treatment, and provides a polymeric coagulant as well as a preparation method and application thereof. The polymeric coagulant is prepared from the raw materials of liquid polyaluminum chloride, the dimethyl diallyl ammonium chloride copolymer, the chitosan-porous carbon nanomaterial and the quaternary ammonium salt modified bentonite, and the liquid polyaluminum chloride and the dimethyl diallyl ammonium chloride copolymer can achieve the effects of adsorption charge neutralization, adsorption bridging and screen cloth sweeping; the quaternary ammonium salt modified bentonite and the chitosan-porous carbon nanomaterial have an adsorption effect, and the four raw materials are polymerized together to jointly play coagulation and adsorption effects, so that the purpose of efficiently removing organic pollutants and suspended solids is achieved. Results of the embodiment show that the polymeric coagulant is suitable for treatment of various wastewater such as sludge water, landfill leachate and domestic sewage, and the removal rate of COD and suspended solids is high.

The invention provides a synthesis method of a chloride-free cationic rosin size emulsifier, which comprises the following steps: adding water to dilute dimethyl diallyl ammonium chloride, acrylamide and methacryloyloxyethyl trimethyl ammonium chloride according to a certain proportion to prepare a monomer mixed solution; the monomer mixed solution and the initiator solution are simultaneously pumped into a first microchannel reactor for polymerization reaction, the reaction temperature is 60-100 DEG C, the pressure is 0.2-1.4 Mpa, the retention time is 0.5-3 min, and a cationic polymer is obtained; and simultaneously pumping the cationic polymer and glyoxal into the second microchannel reactor for continuous reaction at the reaction temperature of 10-20 DEG C under the pressure of 2-4.0 Mpa for 0.5-3 minutes. The reaction time is greatly shortened by adopting the microchannel reactor, the method is suitable for industrial production, the synthesized chloride-free cationic rosin size emulsifier is safe, non-toxic, easy to dissolve in water, strong in cohesion, good in hydrolytic stability and free of gelling in 80 days, and rosin emulsion prepared by utilizing the cationic emulsifier is fine in granularity, good in stability and free of chloropropanol.

The invention relates to an acid-soluble water-swelling gel plugging agent as well as a preparation method and application thereof. The acid-soluble and water-swelling gel plugging agent disclosed by the invention is prepared by polymerizing the following raw materials in parts by weight: 15 to 25 parts of carboxymethyl cellulose, 20 to 40 parts of N, N-dimethylacrylamide, 15 to 30 parts of dimethyl diallyl ammonium chloride and 10 to 35 parts of sodium p-styrenesulfonate. The plugging agent disclosed by the invention can resist high temperature and high pressure, also has high water absorption and salt resistance, is high in acid solubility, fully ensures smooth proceeding of plugging work, avoids damage to a stratum, and is beneficial to proceeding of plugging removal work in the later period. The invention further provides a preparation method and application of the acid-soluble water-absorbing expansible gel plugging agent, the preparation process is simple, the requirement for professional knowledge of operators is low, no special requirement for use equipment exists, the production stability is good, all the raw materials are commercially available, the source is wide, the price is low, and large-scale industrial production is easy to achieve.

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 an antibacterial epoxy resin coating and a preparation method thereof, 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 discloses a modified flocculant and equipment for rapidly removing microplastics in drinking water, and the modified flocculant is a polyaluminum sulfate-titanium tetrachloride-poly dimethyl diallyl ammonium chloride ternary composite flocculant. The pH application range value is increased by compounding with the poly dimethyl diallyl ammonium chloride, the charge neutralization bridging and netting capabilities are enhanced, and the adsorption bridging through a polymer chain is enhanced, so that the flocculant has the advantages of strong flocculation capability, quick demulsification, high settling velocity and small flocculant volume; and the water purifier has very strong purification capacity on fine suspended matters such as micro-plastics in water. Through the special flocculant adding, stirring and precipitation structure design, the removal rate of the micro-plastics is remarkably improved.

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 a high-performance true nanoscale fiber membrane as well as a preparation method and application thereof, and belongs to the technical field of nanofiber air filtering materials. The preparation method comprises the following steps: by taking water as a solvent, dissolving a dimethyl diallyl ammonium chloride monomer in deionized water, adding ammonium persulfate and azodiisobutyronitrile as initiators to prepare poly dimethyl diallyl ammonium chloride, then dissolving the poly dimethyl diallyl ammonium chloride and nylon 66 particles in an organic solvent 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 A spinning precursor solution is prepared in 1, 2, 2-trifluoroethanol, and the fiber membrane with a real nanoscale fiber structure is prepared from the spinning precursor solution through an electrostatic spinning technology and a one-step method. Compared with an existing preparation process, the preparation method has the advantages that the process is simple and easy to operate, the production efficiency is high, and the fibrous membrane with the real nanoscale fibers shows excellent filtering performance on fine particulate matters with different particle sizes and shows excellent application potential in the fields of air purification, environmental protection, industrial waste gas treatment and the like.

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 a laundry detergent capable of rapidly sterilizing and killing mites and a preparation method thereof, and relates to the technical field of laundry detergents. Methyl sorbate and 5-hydroxytryptamine react to form an amido bond, hydrolytic stability and hard water resistance are enhanced, methyl sorbate and indole structures are introduced, and the effect of rapid sterilization is achieved; then reacting with butyl glycidyl ether to prolong the length of a hydrophobic chain, reduce interfacial tension and realize a degreasing effect; and then the modified antistatic agent is compounded, so that the overall solubilizing capacity is improved, and a strong decontamination effect is achieved. Wherein the modified antistatic agent is prepared by co-polymerizing dimethyl diallyl ammonium chloride, vinyl benzenesulfonic acid and acrylic acid-2-methoxyethyl ester; a quaternary ammonium salt structure is introduced, so that a conductive layer mainly based on water ionization can be formed, lone pair electrons can be generated, and the antistatic capacity of the clothes is improved; a sulfonic acid group is introduced, and is matched with an ethyoxyl chain of acrylic acid-2-methoxyethyl ester, so that the diffusion effect is enhanced, and the decontamination and antistatic effects are improved.

The invention provides an anti-swelling agent, a preparation method and application of the anti-swelling agent in fracturing. The anti-swelling agent is prepared from the following raw materials: dimethyl diallyl ammonium chloride, an auxiliary agent, an initiator and water. The anti-swelling agent disclosed by the invention is a cationic polymer taking dimethyl diallyl ammonium chloride as a main body, has good water solubility, is neutral in aqueous solution, generates a quaternary ammonium salt linear acting group with positive charges after being ionized in the aqueous solution, and has bridging and sweeping functions of a common viscosity stabilizer; and the material also has very strong electricity neutralization capability. According to the principle, cationic groups attract clay ions with negative charges, surface charges of colloid particles are reduced and neutralized, meanwhile, a clay colloid diffusion layer is compressed to enable the particles to be agglomerated, flocculation sedimentation is generated by means of the adhesion bridging effect of molecular chains, and clay expansion and dispersion migration are rapidly prevented.

The invention relates to a method for recovering palladium in a waste colloid palladium activation solution, in particular to the technical field of secondary utilization of resources, the recovery method comprises the following steps: adding a gel breaker into the waste colloid palladium activation solution, and then carrying out solid-liquid separation to obtain recovered palladium; wherein the gel breaker comprises one or a combination of at least two of an epichlorohydrin-dimethylamine copolymer, dimethyl diallyl ammonium chloride or a dimethyl diallyl ammonium chloride copolymer. According to the recovery method provided by the invention, the original dispersion stability of colloidal palladium is destroyed by adopting the specific gel breaker, the dispersed atomic state palladium particles are aggregated into large particles, and effective separation of palladium can be realized through solid-liquid separation.

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 aims to provide a composite flocculant as well as a preparation method and a use method thereof, aiming at the problems existing in the use of the existing flocculant. The composite flocculating agent is a mixture obtained by polymerizing inorganic salt containing aluminum and iron, polyoxyethylene and dimethyl diallyl ammonium chloride, wherein the inorganic salt containing aluminum and iron is obtained by treating iron tailings through acid liquor. The composite flocculant not only retains the advantages of high settling speed and wide application range of an inorganic flocculant, but also has the advantages of high flocculation speed, strong adsorption bridging performance and small sludge generation amount of an organic polymer flocculant, and can quickly flocculate granular turbid substances to achieve the effect of purifying water. And dosing is convenient, and the cost is reduced.

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 invention discloses an emulsion stock solution, acidic slickwater and a corresponding preparation method and application, and the preparation method of the emulsion stock solution comprises the following steps: carrying out polymerization reaction on an aqueous solution and an oil solution under the action of an initiator to obtain the emulsion stock solution; wherein the aqueous solution comprises an anionic monomer, a cationic monomer, a nonionic monomer and water; the oil solution comprises an emulsifier, a co-emulsifier and oil; the anionic monomer is one or more of 2-acrylamido-2-methylpropanesulfonic acid, alkali metal salt of allyl sulfonic acid and alkali metal salt of maleic acid; the cationic monomer is one or more of octadecyl dimethyl allyl ammonium chloride, dimethyl diallyl ammonium chloride and epoxy propyl ethyoxyl trimethyl ammonium chloride; the nonionic monomer is one or more of hydroxymethyl acrylamide, hydroxymethyl methacrylate and dimethylaminoethyl methacrylate. The acidic slick water prepared by the invention can be quickly dissolved and adhered, can be continuously prepared, and can be used for dissolving carbonate rocks.

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.