270 results about "(Hydroxyethyl)methacrylate" patented technology

The invention discloses fiber reinforced concrete for bridge deck pavement and a preparation method thereof, and belongs to the technical field of concrete. The fiber reinforced concrete is prepared from the following raw materials: Portland cement, modified basalt fiber, a slow-release mineralizer, a stress-oriented dispersing aid and the like. The modified basalt fiber is a basalt fiber which is subjected to amino silanization through a silane coupling agent KH-550 and then is catalytically grafted with ethylenediamine tetraacetic acid and hydroxyethyl methylacrylate through DCC (dicyclohexylcarbodiimide); the slow-release mineralizer comprises calcium sulphoaluminate and silicon-based coated nano calcium sulfate; the silicon-based coated nano calcium sulfate is core-shell structure powder formed by coating a nano calcium sulfate core material with a silicon dioxide shell layer; the concrete is strong in interface bonding, excellent in dynamic fatigue resistance, good in durability and stable in volume, and the problem that the mechanical property, the durability and the dynamic anti-interference capability of the concrete cannot be considered at the same time is solved.

The invention discloses a high-strength modified polyethylene composite fiber and a preparation method thereof, and belongs to the technical field of fiber materials, carboxylated mesoporous silica microspheres are used as a matrix, the surface of the matrix is coated with a graphene sheet layer, then hydroxyethyl methylacrylate is grafted, functionalized graphene / mesoporous silica microspheres are obtained, the functionalized graphene / mesoporous silica microspheres are used as a filler, and the high-strength modified polyethylene composite fiber is prepared. When the polyethylene composite fiber is applied to a ship cable, the overall weight of the ship cable can be reduced, and relative slippage can be generated between graphene lamellas and mesoporous silica microspheres, so that stress is dispersed, and the strength of the polyethylene composite fiber is improved; a hydrophobic alkane long chain is introduced through esterification of the graphene / mesoporous silica microspheres and hydroxyethyl methylacrylate and graft modification of hydroxyethyl methylacrylate, so that the hydrophobic alkane long chain has good compatibility with white oil, and the microspheres are prevented from approaching and gathering by a steric hindrance effect, so that the hydrophobic alkane long chain is more uniformly and stably dispersed in the white oil.

The invention relates to the technical field of waterproof materials, and particularly discloses a high-elasticity waterproof emulsion and a preparation method thereof. The invention discloses a high-elasticity waterproof emulsion. The water-based paint is prepared from the following raw materials in parts by mass: 40 to 60 parts of modified acrylic resin emulsion, 25 to 40 parts of waterborne polyurethane, 3 to 6 parts of hydroxyethyl methylacrylate, 0.5 to 1 part of mercaptopropionic acid, 6 to 8 parts of fluorinated mica sheet, 3 to 6 parts of organic silicon emulsion, 2 to 4 parts of fluorocarbon surfactant, 0.8 to 1.5 parts of adipic dihydrazide, 0.3 to 0.8 part of dynamic cross-linking agent, 3 to 8 parts of compatilizer, 0.5 to 1 part of antioxidant, 0.5 to 1 part of anti-aging agent, 0.5 to 1.5 parts of defoaming agent and 40 to 55 parts of solvent. The modified acrylic resin emulsion is prepared from a monomer comprising diacetone acrylamide. The high-elasticity waterproof emulsion prepared by the invention has relatively good elasticity, waterproof performance and aging resistance.

The application belongs to the technical field of membrane separation materials, and discloses an ultrahydrophilic oil-water separation membrane, a preparation method and application thereof, and comprises the following steps: 2-(2-bromoisobutyryloxy)ethyl methacrylate monomers are prepared from 2-hydroxyethyl methacrylate and 2-bromoisobutyryl bromide, and a polymer with an atom transfer radical polymerization initiator is prepared through a free radical polymerization reaction; the polymer with the atom transfer radical polymerization initiator and polyacrylonitrile are dissolved into a solvent, and a PAN / P(AN-g-BIEM) blended membrane is prepared through a non-solvent induced phase separation method; and a hydrophilic polymer brush is grafted to the surface of the PAN / P(AN-g-BIEM) blended membrane to obtain the ultrahydrophilic oil-water separation membrane; the ultrahydrophilic oil-water separation membrane prepared by the application has a high separation flux, excellent oil-water separation efficiency and separation performance for different oil-in-water emulsions.

The invention discloses an inorganic copolymer anticorrosive paint and a preparation method thereof, and relates to the technical field of paints. The invention discloses inorganic copolymer anticorrosive paint. The coating is prepared from the following raw materials in parts by weight: 20 to 30 parts of silica sol, 8 to 15 parts of sodium hydroxide, 30 to 45 parts of metakaolin, 8 to 20 parts of quartz sand, 15 to 25 parts of water, 0.3 to 2 parts of sodium polyacrylate, 0.2 to 3 parts of polydimethylsiloxane emulsion, 5 to 12 parts of modified nano titanium dioxide, 6 to 10 parts of modified epoxy resin, 10 to 25 parts of hydroxyethyl methylacrylate, 5 to 10 parts of zinc phosphate, 3 to 8 parts of aluminum triphosphate and 2 to 6 parts of iron oxide red. The raw materials of the inorganic copolymer anticorrosive paint are scientifically proportioned, and the anticorrosive performance is enhanced through the modified nano titanium dioxide and the epoxy resin. Material uniformity is ensured through step-by-step feeding and ultrasonic dispersion in preparation, and stability is improved through vacuum defoaming and nitrogen protection. The components such as the silica sol and the zinc phosphate have a synergistic effect to form a compact coating, and the coating is high in corrosion resistance, good in constructability and suitable for various scenes.

The invention relates to the technical field of high polymer materials, in particular to an EVA / nano-zinc oxide anti-ultraviolet car cover and a preparation method thereof. The invention aims to solve the problem that the mechanical strength and the ultraviolet resistance of the existing car cover are difficult to consider at the same time. Ethylene-vinyl acetate resin is used as a matrix, a silane coupling agent and hydroxyethyl methylacrylate surface modified and grafted composite nano-zinc oxide, maleic anhydride grafted EVA and a polyurethane modifier are subjected to melt blending, a TMPTA cross-linking agent is added, and the vehicle cover film is prepared through extrusion casting and ultraviolet curing. Wherein the polyurethane modifier is obtained by reacting polycaprolactone polyol with isophorone diisocyanate and adopting hydroxyethyl methylacrylate and 2, 2 '-methylenebis (6-tert-butyl-4-methylphenol) for end capping. The uvioresistant car cover prepared by the invention has excellent tensile strength, elongation at break, uvioresistant performance and adhesive force at the same time.

The invention relates to a polycarboxylic acid water reducer and a preparation method thereof, and the water reducer is prepared from the following raw materials: 45 to 55 percent of isopentenyl polyoxyethylene ether, 28 to 35 percent of acrylic acid, 1.5 to 2.5 percent of modifier, 0.3 to 0.5 percent of ammonium persulfate, 0.03 to 0.06 percent of ascorbic acid, 5 to 8 percent of hydroxyethyl methylacrylate, 0.15 to 0.25 percent of 2, 4-diphenyl-4-methyl-1-pentene and the balance of water. The modifier is prepared from the following raw materials: 1, 5-dichloronaphthalene, p-nitrostyrene, dimethyl sulfate, ceric ammonium nitrate and tetramethylpiperidine oxide. The polycarboxylate superplasticizer has excellent neat paste fluidity and fluidity retention capability, has low 1h time-dependent variable slump which is below 18mm and optimally 10mm when applied to concrete, has a water-reducing rate of more than 40% and a gas content of less than 3.8%, and also has more advantages in compressive strength ratio.

The invention discloses a bio-based modified high polymer material and a preparation method thereof, and relates to the technical field of high polymer materials. When the bio-based modified high polymer material is prepared, firstly, lignin reacts with terephthalaldehyde to prepare formylated lignin; carrying out multi-component reaction on the aldehyde lignin to obtain modified lignin; the preparation method comprises the following steps: reacting 4-mercaptophenylboronic acid with 1-mercaptoglycerol to prepare a dimercaptoborate cross-linking agent; the preparation method comprises the following steps: reacting isophorone diisocyanate with polytetrahydrofuran ether glycol, and then reacting with a flame-retardant chain extender, 1, 2-propylene glycol and hydroxyethyl methylacrylate to prepare modified polyurethane; and mixing the modified polyurethane, the modified lignin and a dimercaptoborate cross-linking agent, casting and curing to obtain the bio-based modified high polymer material. The bio-based modified high polymer material prepared by the invention has the advantages of flame retardance, antibacterial property, aging resistance, self-repairing property, repeatable processing and high mechanical strength.

The invention relates to a fabric flavor enhancer containing ester-based quaternary ammonium salt and a preparation method thereof. The fabric flavor enhancer containing ester-based quaternary ammonium salt comprises the following components: polyethylene glycol, an ester-based quaternary ammonium salt solution, modified silicon dioxide, polyquaternary ammonium salt and the like. The modified silicon dioxide is prepared by the following steps: carrying out a blending reaction on hydroxylated silicon dioxide and KH570 to obtain an intermediate product, then carrying out a blending reaction on triethanolamine, acrylic acid, lauric acid and sodium bromoacetate to obtain an intermediate product 2, and finally polymerizing the intermediate product, the intermediate product 2 and hydroxyethyl methylacrylate. Long alkyl chains, quaternary ammonium cations and hydroxyl are introduced into the modified silicon dioxide, so that organic matters on the surface of the modified silicon dioxide form a net-shaped structure; wherein the long alkyl chain can improve the compatibility; quaternary ammonium cations can neutralize charges and make the fabric softer and more fluffy; hydroxyl can adsorb essence, the antistatic performance and the like can be improved, and in addition, silicon dioxide and a net-shaped structure can further enhance the fragrance of the fabric.

The application discloses waterproof and decorative integrated paint and a preparation method thereof. The paint comprises silicone emulsion, acrylic emulsion, pigment, heavy calcium carbonate, sheeted kaolin, silicon powder, modified graphene oxide, nano silicon dioxide, ethylene glycol, ultraviolet absorber, light stabilizer, heat stabilizer, dispersant, hydrophobic agent, film forming aid, defoaming agent, leveling agent, thickening agent, preservative and water. The acrylic emulsion is obtained by polymerization reaction of methyl methacrylate, cyclohexyl methacrylate, butyl acrylate, lauryl methacrylate, hydroxyethyl methacrylate, glycidyl methacrylate, acrylic acid and KH-570. The modified graphene oxide is obtained by modification of graphene oxide by beta-cyclodextrin and vinyltrimethoxysilane. The waterproof and decorative integrated paint provided by the application has the functions of waterproofing and decoration, and has excellent weather resistance, stain resistance and bonding strength.

The invention provides yellow glue resistant to corrosion of a plasticizer and a preparation method of the yellow glue. The yellow glue is prepared from a polyurethane prepolymer, a chloroprene rubber sheet, methyl methacrylate, benzoyl peroxide, an anti-aging agent, butanone, cyclohexane, dimethyl carbonate and tackifying resin. The polyurethane prepolymer is prepared from the following components in parts by weight: 10 to 14 parts of 1, 4-butanediol adipic acid polyester polyol, 4 to 8 parts of polycaprolactone polyol, 1 to 3 parts of diphenylmethane diisocyanate, 0.05 to 0.15 part of 1, 6-hexanediol, 1 to 2 parts of hydroxyethyl methacrylate, 0.01 to 0.03 part of organic bismuth catalyst and 75 to 80 parts of butanone. The polyurethane prepolymer with specific crystallization performance is synthesized through cooperation of polycaprolactone polyol and polyester polyol, and the yellow glue is endowed with excellent plasticizer corrosion resistance and low-temperature activation capacity. Active groups in the polyurethane prepolymer are subjected to graft copolymerization with the chloroprene rubber adhesive and MMA, and a plasticizer-resistant polyurethane chain segment is introduced into a molecular chain of the chloroprene rubber adhesive, so that a hard segment-soft segment alternating block structure is formed, and corrosion resistance and viscoelasticity are both considered.

The present invention provides a polymeric dispersant that is to be blended in an aqueous pigment dispersion in which a pigment is finely dispersed in a stable manner and at a high level, the aqueous pigment dispersion enabling preparation of an aqueous inkjet ink capable of recording an image excellent in adhesiveness and durability on plastic media and textiles. The polymeric dispersant is a polymer that includes a constituent unit (i) derived from styrene, a constituent unit (ii) derived from methyl methacrylate and / or the like, a constituent unit (iii) derived from 2-ethylhexyl methacrylate and / or the like, a constituent unit (iv) derived from 2-hydroxyethyl methacrylate and / or the like, and a constituent unit (v) derived from methacrylic acid, and at least part of carboxy groups is neutralized with an alkali.

The invention discloses composite hydrogel for wound repair as well as a preparation method and application of the composite hydrogel, and belongs to the technical field of medical materials. The preparation method comprises the following steps: mixing methylacryloylated gelatin, hydroxyethyl methylacrylate and oxidized dextran, adding copper sulfide nanoparticles, a cross-linking agent and a photoinitiator, uniformly stirring, placing in a mold, irradiating by adopting ultraviolet light, carrying out Schiff base reaction on an aldehyde group on an ODex chain and an amino group on a GelMA chain to form a dynamic covalent bond, and forming a reversible cross-linking point, so as to obtain the copper sulfide nanoparticle / GelMA composite hydrogel. The preparation method comprises the following steps: carrying out a copolymerization reaction on HEMA and methacryloyl on a GelMA molecular chain to form a stable covalent cross-linked network, effectively capturing CuS NPs through a physical effect and stably dispersing the CuS NPs in the network in the process, and soaking the cross-linked hydrogel in deionized water for balancing to obtain the target composite hydrogel. The composite hydrogel has excellent mechanical strength, pH response swelling property and biocompatibility, can realize efficient antibacterial and endogenous immune regulation by combining near-infrared photothermal therapy, and effectively promotes wound repair.

The invention discloses a preparation method of a breathable antibacterial composite fabric, and particularly relates to the field of layered fabrics. The method comprises the following steps: by taking poplar fallen leaves as a raw material, crushing, immobilizing by glutaraldehyde, and sequentially treating by pectinase, cellulase and alkaline hydrogen peroxide to form an immobilized cell template with a cell wall microstructure; then, a mixed solution of chitosan, an antibacterial agent and a cross-linking agent permeates into gaps of the template, the antibacterial agent is covalently grafted to the chitosan through a Michael addition reaction, the cell template is removed through EDTA dissolution, and a porous antibacterial layer is reserved; and finally, compounding the keratin microspheres and the silk fibroin-hydroxyethyl methylacrylate copolymer, coating two sides of the antibacterial layer with the compounded keratin microspheres and silk fibroin-hydroxyethyl methylacrylate copolymer, and initiating crosslinking by ultraviolet light to form a compact and breathable microporous coating layer. By means of bionic structure design and a covalent grafting technology, efficient unification of the antibacterial function and the air permeability is achieved.

The invention provides a waterproof heat-resistant mold coating which comprises the following components: modified acrylic resin, modified silicon dioxide, epoxy resin, kaolin, talcum powder, hexagonal boron nitride, zinc stearate, graphite, a solvent and an auxiliary agent, wherein the modified acrylic resin is obtained by polymerizing acrylic acid and butyl methacrylate and then grafting 2-fluoro-5-(trifluoromethyl) benzyl alcohol and triisopropyl silanol; the modified silicon dioxide is obtained by grafting perfluorooctyl ethylene, phenyl methacrylate, hydroxyethyl methylacrylate and oleic acid after silicon dioxide and a silane coupling agent react with each other. According to the waterproof heat-resistant mold coating disclosed by the invention, a silicon-oxygen bond, a benzene ring, a long fluorine chain and an organic chain segment are introduced into the modified silicon dioxide, and the silicon-oxygen bond, the benzene ring, the fluorine chain and the organic chain segment are introduced into the modified acrylic resin, so that the heat resistance, hydrophobicity and other properties of the coating are improved, and the waterproof heat-resistant mold coating has a good application prospect.

The invention discloses a high-conductivity high-adhesion automobile bumper primer and a preparation method thereof, and belongs to the technical field of automobile bumper primers. The high-conductivity and high-adhesion automobile bumper primer is prepared from the following raw material components: polar modified chlorinated polypropylene, waterborne acrylic resin, a dispersing agent, a flatting agent, a defoaming agent, titanium dioxide, superfine precipitated barium sulfate, fumed silica, conductive filler and deionized water. The polar modified chlorinated polypropylene is obtained by carrying out free radical polymerization on a polar unsaturated monomer and chlorinated polypropylene; the polar unsaturated monomer is prepared from acrylic acid, methyl methacrylate, hydroxyethyl acrylate and 3-allyl-2-hydroxybenzaldehyde; the water-based acrylic resin is obtained by carrying out copolymerization on hydroxyethyl methylacrylate, hydroxyethyl acrylate, methacrylamide and 2, 5-divinyl benzene-1, 4-diamine; the conductive filler adopts carbon nanotubes, graphene and conductive carbon black; the high-conductivity and high-adhesion automobile bumper primer prepared by the preparation method disclosed by the invention is excellent in mechanical property and relatively good in conductivity.

This invention discloses a high-wear-resistant polytetrafluoroethylene (PTFE) membrane material and its preparation method, relating to the field of PTFE membrane material technology. The high-wear-resistant PTFE membrane material prepared by this invention includes PTFE, wear-resistant filler, lubricant, and composite surfactant. The composite surfactant is obtained by reacting maleic acid derivatives with polyethylene glycol derivatives. The maleic acid derivative is obtained by reacting hydroxyethyl methacrylate, styrene, silane coupling agent KH570, POE, and maleic anhydride. The polyethylene glycol derivative is obtained by reacting 4-imidazolium formaldehyde with mono-amino-terminated polyethylene glycol. This process improves wear resistance while giving the PTFE membrane anti-fouling properties. The wear-resistant filler is obtained by reacting brominated cyclohexylmethyl dimethoxysilane with nano-silica, followed by coating with a perfluoropolyether block copolymer. This process improves wear resistance while the introduced perfluoropolyether further enhances anti-fouling properties.

The application belongs to the technical field of medical biomaterials, and particularly relates to an interpenetrating network polymer based on phosphorylcholine polymer and a preparation method and application thereof. The application provides a sequential interpenetrating network method, which comprises the following steps: preparing a monomer infiltration solution containing phosphorylcholine monomer, polyethylene glycol methacrylate, dimethylaminoethyl methacrylate, butyl methacrylate, hydroxyethyl methacrylate, ethylene glycol methacrylate, a crosslinking agent and an initiator; dipping a high-molecular polymer matrix into the monomer infiltration solution, and performing ultrasonic oscillation treatment to promote the infiltration of monomers into the interior of the matrix; and performing a polymerization reaction to obtain a final product after washing; the material prepared by the application has excellent thermal stability, excellent swelling performance, intelligent pH response drug release capacity and biocompatibility, and is suitable for the fields of biological medicine and cosmetics.

This invention provides a weather-resistant metal protective coating and its preparation method. The weather-resistant metal protective coating comprises a modified epoxy resin, modified carbon nanotubes, a curing agent, an initiator, and a diluent. The modified epoxy resin is prepared by reacting epoxy resin sequentially with methyldodecyl dichlorosilane and hydroxyethyl methacrylate ethyl phosphate. The modified carbon nanotubes are prepared by reacting carboxylated carbon nanotubes with 3-(methacryloyloxy)propyltrimethoxysilane. The weather-resistant metal protective coating prepared by this invention exhibits excellent anti-corrosion, anti-aging, and mechanical properties.

The invention relates to the technical field of high polymer materials, and particularly discloses a high-strength polyurethane adhesive as well as a preparation method and application thereof. The adhesive is prepared by compounding a double-bond-terminated polyurethane prepolymer monomer and a multi-sulfydryl cross-linking agent. And the prepolymer monomer is synthesized by reacting 4, 4-diisocyanate dicyclohexylmethane and hydroxyethyl (meth) acrylate according to a molar ratio of 1: 2. The polythiol cross-linking agent is tetrakis (3-mercaptopropionic acid) pentaerythritol ester or tetrakis (2-mercaptoacetic acid) pentaerythritol ester. When in use, the two components are mixed and then coated on a base material, and the mixture is cured at 30-100 DEG C for 0.5-5 hours. The adhesive disclosed by the invention forms a compact network through multiple crosslinking mechanisms such as sulfydryl-alkene Michael addition, so that the adhesive has extremely high shear strength (up to more than 30MPa) and excellent heat resistance and aging resistance on metal, glass, glass fiber plates and the like.

The application belongs to the technical field of semiconductor materials, and relates to an ArF photoresist resin with stable PEB temperature response and a preparation method and application thereof. The ArF photoresist resin is prepared by copolymerization of acid-sensitive monomers, polar monomers and skeleton-regulating monomers; wherein the acid-sensitive monomers are 1-ethyl-3-(2,2,2-trifluoroethyl)cyclopentyl methacrylate, the polar monomers are hydroxyethyl methacrylate, and the skeleton-regulating monomers are cyclohexyl methacrylate. The ArF photoresist resin can be prepared into ArF photoresist together with a photoacid generator, a quencher and an organic solvent. The photoresist has a smaller threshold exposure dose change range under different PEB temperature conditions, and exhibits good PEB temperature response stability.

This invention discloses a method for preparing a side-chain liquid crystal photosensitive resin monomer with photo-oriented and thermally anisotropic properties and its application in 3D printing. Using 2,2-di(hydroxymethyl)propionic acid, isophorone diisocyanate, and hydroxyethyl methacrylate as raw materials, a side-chain liquid crystal photosensitive resin monomer is prepared and applied to 3D printing resin. Under the action of a 3D printing laser, the liquid crystal units in the side-chain liquid crystal photosensitive resin monomer of this invention form an oriented structure in the laser direction, allowing heat flow to be conducted along the oriented structure and effectively suppressing phonon scattering, thus exhibiting thermal anisotropy. Simultaneously, the side-chain liquid crystal photosensitive resin monomer with photo-oriented and thermally anisotropic properties of this invention exhibits good mechanical properties after 3D printing.

The invention provides a rubber / EVA dual-purpose treating agent and a preparation method and application thereof.The rubber / EVA dual-purpose treating agent is prepared from an ethylene chloride-vinyl acetate copolymer, a styrene-butadiene-styrene block copolymer, methyl methacrylate, benzoyl peroxide, 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, a styrene-butadiene-styrene block copolymer, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate and a styrene-butadiene-styrene block copolymer. The adhesive is prepared from 2, 6-di-tert-butyl-4-methylphenol, chloroprene rubber, butadiene styrene rubber, 2-hydroxyethyl methacrylate, an auxiliary agent, a diluent and a solvent. The rubber / EVA dual-purpose treating agent can be universally used for two materials, namely rubber and EVA, so that inferior-quality products and mixed use conditions in the production process are reduced, waste is not easily caused, and the rubber / EVA dual-purpose treating agent is convenient to use; components with strong pungent smell, such as trichloroisocyanuric acid, do not need to be added, so that the prepared treating agent is relatively small in smell and beneficial to environmental protection.

The invention discloses low-melting-point copolyester and a preparation method thereof, and belongs to the technical field of hot-melt polyester. The low-melting-point copolyester prepared by the invention comprises the following raw material components in parts by mass: 90-97 parts of a low-melting-point copolyester base material and 3-10 parts of a toughening agent, wherein the low-melting-point copolyester is obtained by melt polycondensation of terephthalic acid, 1, 4-butanediol, a flame-retardant monomer and lactic acid; the flame-retardant monomer is obtained by reacting amino acid diethyl ester with cinnamyl aldehyde and then reacting with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide; the toughening agent is obtained by copolymerizing glycidyl methacrylate, potassium 3-sulfopropyl methacrylate, hydroxyethyl methylacrylate and glyceryl trihydroxypropyl ether triacrylate; the low-melting-point copolyester prepared by the invention is low in melting point, good in flame retardance and excellent in mechanical property.

The present invention provides a free radical polymerization inhibitor, its preparation method and use, and a composition comprising hydroxyethyl methacrylate. The free radical polymerization inhibitor has a boiling point of 350°C or higher. The free radical polymerization inhibitor is applied in the extractive distillation separation process of hydroxyethyl methacrylate, and the content of the free radical polymerization inhibitor in the hydroxyethyl methacrylate product taken to the top of the column is very small, which does not adversely affect the color number and downstream application. The free radical polymerization inhibitor is selected from one or more of the following structures:

The application discloses an industrial wastewater zero-discharge treatment process and relates to the technical field of industrial wastewater treatment. The application adopts a combined process of "air flotation+softening precipitation+catalytic oxidation+multi-medium filtration+ultrafiltration+DTRO+RO" to concentrate wastewater, and the concentrated water of the DTRO is treated through a process of "softening precipitation+multi-medium filtration+evaporation crystallization". Meanwhile, a modified monomer is generated through an imino nucleophilic acyl substitution reaction of maleic anhydride and diethyl iminodiacetate, and the modified monomer is acidified by hydrochloric acid to obtain an acidified modified monomer containing a large amount of carboxyl groups; then, the acidified modified monomer is subjected to a free radical polymerization method together with hydroxyethyl methacrylate and 2-acrylamido-2-methylpropanesulfonic acid sodium to obtain an oily copolymer; and finally, the copolymer is adsorbed by porous ceramic particles, the surface of the particles is sprayed with aluminum dihydrogen tripolyphosphate encapsulation, and a final silicon removal agent is formed.

This invention discloses a fiber-reinforced concrete for bridge deck paving and its preparation method, belonging to the field of concrete technology. The raw materials for the fiber-reinforced concrete include silicate cement, modified basalt fiber, slow-release minerals, and stress-directing dispersants. The modified basalt fiber is basalt fiber that has been aminosilanized with the silane coupling agent KH-550 and then grafted with ethylenediaminetetraacetic acid and hydroxyethyl methacrylate via DCC catalysis. The slow-release minerals include calcium sulfoaluminate and silicon-based coated nano-calcium sulfate. The silicon-based coated nano-calcium sulfate is a core-shell structure powder with a silicon dioxide shell covering a nano-calcium sulfate core. This concrete exhibits strong interfacial bonding, excellent dynamic fatigue resistance, good durability, and volume stability, solving the problem of simultaneously achieving optimal mechanical properties, durability, and dynamic disturbance resistance in concrete.

The application relates to the technical field of water-based damping materials, and discloses a wide-temperature-range water-based damping material and a preparation method thereof.The wide-temperature-range water-based damping material comprises, in mass fractions, 30-50 parts of an acrylate resin, 20-30 parts of hydroxyethyl methacrylate, 30-60 parts of polyethylene glycol, 5-10 parts of a dispersing agent, 3-10 parts of a functional filler, 0.3-1 part of a defoaming agent, 0.5-3 parts of a thickening agent, 2-5 parts of a film-forming agent and 1-10 parts of a reinforcing filler.

This invention relates to an aqueous binder for lithium-ion battery negative electrodes, its preparation method, and its application. The raw materials for the aqueous binder include unsaturated carboxylic acid monomers, unsaturated nitrile monomers, unsaturated amide monomers, acrylate monomers, and functional monomers. The functional monomers include at least one selected from hydroxyethyl acrylate, hydroxyethyl methacrylate, methoxy polyethylene glycol acrylate, allyl polyethylene glycol, and allyl polyethylene glycol monomethyl ether. The aqueous binder of this invention incorporates acrylate monomers and functional monomers, which can lower the glass transition temperature of the copolymer while maintaining high peel strength. By introducing functional monomers with long side chains, the double-layer mechanism of polyacrylic acid itself and the steric hindrance effect of the long side bonds of the functional monomers are utilized as dispersants to achieve stable dispersion of the negative electrode slurry particles. The precipitation polymerization method can significantly reduce the internal resistance of lithium-ion batteries and improve peel strength.

The present disclosure provides, as a film structure useful for a probe of a biosensor, a film structure comprising a detection layer including an analyte-responsive enzyme; and a protection film formed on the detection layer, in which the protection film includes a copolymer mixture including poly(styrene-ran-4-vinylpyridine-ran-propyleneglycol methacrylate); and poly(4-vinylpyridine)-block-poly(C1-15 alkyl methacrylate), or poly(4-vinylpyridine-ran-2-hydroxyethyl methacrylate).