986 results about "Radical polymerization" patented technology

The invention relates to a flexible aqueous binder for a lithium battery negative electrode and a preparation method thereof. The preparation method comprises the following steps: firstly, preparing a flexible polyurethane prepolymer containing vinyl by taking hydroxyl-terminated polybutadiene, isocyanate and hydroxyl acrylate as main raw materials; vinyl-containing compounds such as water-soluble acrylic acid (salt) or acrylamide, oil-soluble acrylic ester or acrylonitrile and the like are used as monomers and are combined with a flexible polyurethane prepolymer to prepare the negative water-based binder with flexible cross-linking points through free radical polymerization. The aqueous binder prepared by the technical method provided by the invention can realize point-to-point and point-to-line bonding modes with a pole piece active substance on a microstructure, so that the bonding strength of the active layer material and a copper foil is improved on the premise of not influencing the electrolyte resistance of the binder; and the flexibility of the negative pole piece and the subsequent processing stability are obviously improved.

The invention belongs to the technical field of drilling fluid, and particularly relates to a free radical polymerization water-based drilling fluid composition and a preparation method thereof. The invention relates to a core-shell composite particle-containing water reducer which comprises deionized water, salts (NaCl / KCl), alkalis (Na2CO3 and NaOH), barium sulfate and core-shell composite particles X. The particle is composed of a silicon dioxide core and a polymer shell layer, and the shell layer is formed by free radical copolymerization of acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and acrylic acid and is covalently connected with the core through silanization treatment. Under the conditions of high salinity, strong alkali and high solid phase weighting, the drilling fluid simultaneously realizes the following effects: (1) high-density bearing and low-viscosity pumpability are realized; (2) compact plugging and water loss reduction and low formation damage flowback can be realized; and (3) stable rheology rock carrying, lubrication and friction resistance reduction. The problem that three aspects of performance are difficult to consider in the prior art is solved, and the drilling fluid is suitable for drilling of deep wells, ultra-deep wells and complex stratums and has remarkable industrial application value.

The invention relates to the field of civil engineering waterproof materials, in particular to a nano bentonite-polymer composite material with high salt tolerance and a preparation method thereof, and the nano bentonite-polymer composite material is especially suitable for a sodium-based bentonite waterproof blanket in a saline soil area or a marine environment, and the preparation method comprises the following steps: (1) preparing nano bentonite lamellar colloidal dispersion liquid; (2) introducing and mixing an electrostatic screening agent and a polymerizable monomer; (3) carrying out in-situ free radical polymerization reaction; and (4) post-treatment and finished product preparation. By constructing a three-dimensional interpenetrating hierarchical structure composed of a covalent grafted polymer network, a physically anchored electrostatic screening agent and a stripped bentonite nanosheet layer, effective protection of a bentonite core anti-seepage unit is realized, so that the adaptability and long-term stability of the material under a complex water quality condition are remarkably improved.

The invention relates to a dispersing agent for garnet type solid electrolyte and a preparation method thereof, a special powder dispersing agent for dispersing garnet type solid electrolyte (LLZO, Li7La3Zr2O12) in an ethanol or isopropanol system is a polycarboxylic acid-polyether colorless transparent viscous liquid copolymer, and the copolymer is anchored on the surface of powder particles through the strong adsorption effect of carboxyl, so that the dispersing agent can be used for dispersing the garnet type solid electrolyte (LLZO, Li7La3Zr2O12) in an ethanol or isopropanol system. Meanwhile, the polyether chain segment realizes solvent compatibility and steric hindrance effect, the preparation method for the dispersing agent is a controllable free radical polymerization method and specifically comprises dozens of specific steps and conditions, and the dispersing agent has the advantages that the grinding particle size of the garnet type solid electrolyte can be effectively reduced, stable dispersion of powder in slurry is realized, and the dispersing effect is good. Powder agglomeration is inhibited, and the grinding efficiency is improved, so that the mass production requirement of the high-safety solid-state lithium ion battery is met.

The invention relates to the technical field of concrete, and particularly discloses super-retarded concrete for an ultra-large pile and a preparation method of the super-retarded concrete. The super-retarding concrete for the ultra-large pile is prepared from the following raw materials in parts by mass: 320 to 400 parts of a cementing material, 1820 to 1960 parts of aggregate, 20 to 28 parts of an inorganic-organic hybrid retarding reinforcing agent, 7.2 to 11.6 parts of a polycarboxylate superplasticizer and 85 to 98 parts of water, the inorganic-organic hybrid delayed coagulation enhancer is prepared by carrying out in-situ free radical polymerization reaction on a hydroxyl acrylate monomer, acrylamide and nano silicon dioxide. According to the inorganic-organic hybrid retarding reinforcing agent, a hybrid substance is formed through a chemical bond, an organic phase is chelated with calcium ions to realize retarding and does not excessively inhibit cement particles, inorganic phase nano silicon dioxide has no agglomeration risk, gaps are filled, a stable product is generated to resist alkali erosion, and the super retarding performance and the long-term strength of concrete are both considered; and the service life of the ultra-large pile is prolonged.

The invention discloses a preparation method and application of self-crosslinking hydrogel containing a capsaicin functional structure, and belongs to the technical field of dye adsorption materials. The capsaicin functional structure monomer is introduced into an acrylic acid system, so that the self-crosslinking of the hydrogel is realized, and meanwhile, the adsorption performance of the hydrogel is remarkably improved; mono-substituted capsaicin functional structure monomers containing carboxyl and sulfonic acid groups are used as components, a disubstituted capsaicin functional structure monomer with polyhydroxy and carboxyl is used as a cross-linking agent, the self-crosslinking hydrogel with multiple adsorption sites is successfully constructed through free radical polymerization, and the adsorption capacity and efficiency of the hydrogel are greatly improved. The hydrogel-based carbon material is obtained by carbonizing the self-crosslinking hydrogel containing the capsaicin functional structure, the adsorption performance of the hydrogel material is further improved, the obtained hydrogel-based carbon material can be desorbed and recycled in ethyl alcohol, and the service life of the hydrogel-based carbon material is prolonged. And the problem of secondary pollution of the existing hydrogel material in the acid / alkali desorption process is effectively avoided.

The invention belongs to the field of oilfield chemistry, and discloses development and a method of a gel breaker for recycling drilling fluid, and the preparation method comprises the following steps: (1) contacting chitosan with a modifier under an alkaline condition for chemical modification to obtain O-carboxymethyl chitosan; and (2) carrying out radical polymerization on the obtained O-carboxymethyl chitosan and a quaternary ammonium salt monomer in an acid environment under the action of an initiator to obtain the gel breaker.

According to the lithium battery and the preparation method thereof provided by the invention, dual mechanisms of free radical polymerization and ring-opening polymerization are combined, a stable double-crosslinking structure gel electrolyte constructed by two polymers can be obtained in an in-situ polymerization process, and the mechanical strength and the thermal stability are improved; by regulating and controlling the ratio of an epoxy monomer to an acrylate monomer, firstly, room-temperature ring-opening polymerization is performed, so that part of in-situ gel is formed before formation, smooth formation of a gel interface is ensured, the first coulombic efficiency of the battery is not influenced, and meanwhile, the dosage of the acrylate monomer and a corresponding thermal initiator is reduced; high-temperature treatment is carried out after formation, so that the interface aging of the battery is stable, the cycle life of the battery is prolonged, the acrylate monomers are polymerized, the high temperature continues to promote the polymerization of the residual epoxy monomers, the polymerization conversion rate is favorably increased, and the high-pressure resistance and oxidative decomposition resistance of the gel electrolyte are improved.

The invention discloses a multi-site intelligent response type CO2 gas channeling prevention gel and a preparation method, and belongs to the field of chemical oil displacement, and the preparation method comprises the following steps: taking a carbon dioxide response type monomer, acrylamide and sodium acrylate as monomers, and adopting water-soluble free radical polymerization to prepare a CO2 response type copolymer; the CO2 response type copolymer, a cross-linking agent, a stabilizer, a retarder and formation water are prepared into a polymer cross-linking agent mixed solution, a cross-linking reaction is carried out under the conditions of formation temperature and mineralization degree, and the multi-site intelligent response type CO2 gas channeling prevention gel is obtained. The gel effectively solves the problems that a traditional anti-channeling agent is poor in injectivity in a low-permeability and ultra-low-permeability oil reservoir and cannot achieve deep channeling sealing, CO2 gas channeling fractured channels can be effectively blocked, the carbon dioxide oil displacement effect is remarkably improved, and key technical support is provided for large-scale application of carbon dioxide displacement.

The invention relates to the technical field of high polymer materials, and discloses a high-durability pressure-sensitive adhesive with low VOCs release and a preparation method thereof.The high-durability pressure-sensitive adhesive is prepared from, by weight, 50-80 parts of acrylate copolymer, 0.5-5 parts of cross-linking agent, 10-30 parts of tackifying resin, 1-10 parts of inorganic filler, 0.1-2 parts of antioxidant and 20-50 parts of solvent. Wherein the tackifying resin is at least one of hydrogenated petroleum resin and glycerol ester of rosin, and the inorganic filler is one of nanoscale silicon dioxide and calcium carbonate. Butyl acrylate is used as a main monomer, 2-ethylhexyl acrylate is used as a comonomer, acrylic acid is used as a functional monomer, benzoyl peroxide is used as an initiator, free radical polymerization is carried out at the temperature of 60-85 DEG C under the protection of nitrogen for 4-8 hours, and a copolymer chain with the molecular weight distribution index (PDI) smaller than or equal to 2.5 is formed, so that the viscosity and elasticity of colloid can be balanced; the peeling strength and the weather resistance are improved, and the colloid is prevented from being too soft or embrittled.

The invention discloses a wear-resistant and high-temperature-resistant polyester fiber and a preparation method thereof, belongs to the technical field of polyester processing, and aims to solve the technical problem that wear resistance and high-temperature resistance of polyester fibers in the prior art need to be further improved. Carrying out melt extrusion and spinning to obtain a polyester fiber precursor; the preparation method comprises the following steps: modifying an epoxy group on a carboxylated carbon nanotube through a free radical polymerization reaction to obtain a modified filler, carrying out melt spinning on the modified filler, an auxiliary additive and modified PET to obtain a polyester fiber precursor, preparing a modified antibacterial agent through a coprecipitation method, further preparing an antibacterial solution, and carrying out melt spinning on the antibacterial solution to obtain the antibacterial polyester fiber. The polyester fiber precursor is soaked in the antibacterial liquid to obtain the polyester fiber, so that the wear resistance and the high temperature resistance of the polyester fiber are improved, and the antibacterial performance of the polyester fiber is also improved.

The invention belongs to the technical field of protective coatings, and particularly relates to a modified polysilazane-based protective coating, a preparation method thereof, a protective coating and application thereof. The modified polysilazane-based protective coating provided by the invention is prepared from the following preparation raw materials in parts by mass: 5.0 to 15.0 parts of polysilazane, 1.0 to 5.0 parts of a low-surface-energy compound, 1.0 to 5.0 parts of a hydrophilic compound, 1.0 to 5.0 parts of a silane coupling agent, 0.01 to 0.1 part of an initiator and 60.0 to 80.0 parts of a dispersion medium, both the low-surface-energy compound and the hydrophilic compound contain groups for free radical polymerization reaction. A protective coating formed by the protective paint provided by the invention has good environmental adaptability, and can simultaneously realize multiple effects of friction resistance, corrosion resistance, adhesion resistance, biological fouling resistance and the like when used under harsh working conditions (air / underwater environment).

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.

This application relates to the field of hydrogel electrolyte technology, specifically disclosing a modified sodium alginate crosslinked hydrogel electrolyte, its preparation method, and its applications. This application reduces environmental toxicity and pollution by introducing modified sodium alginate as a crosslinking agent into the hydrogel electrolyte. The interaction between sodium alginate and zinc ions inhibits zinc dendrite formation, regulates the interfacial growth between the negative electrode and the electrolyte, and thus extends battery life; it also has a certain inhibitory effect on hydrogen evolution reaction. This application can prepare the modified sodium alginate crosslinked hydrogel electrolyte using a simple free radical polymerization method. Furthermore, compared to conventional aqueous batteries, the hydrogel electrolyte can better control the interfacial growth of the positive and negative electrodes.

The invention discloses a zwitter-ion modified acrylate dielectric elastomer film and a preparation method thereof. Zwitter-ions can be selected from sulfobetaine methacrylate (SBMA), carboxyl betaine methacrylate (CBMA), sulfobetaine acrylamide (SBAA) and the like. The acrylate monomer can be butyl acrylate (BA), dodecyl acrylate (LA), isoamyl acrylate (EHA) and the like. Zwitterions (special compounds which simultaneously carry equal positive and negative charges on the same molecule and are electrically neutral on the whole) are copolymerized into an acrylate dielectric elastomer through photo-initiated free radical polymerization reaction, zwitterionic clusters uniformly distributed in the dielectric elastomer can construct traps for capturing high-energy electrons, the leakage current of the material is reduced, and the dielectric property of the material is improved. And the intrinsic breakdown field strength of the material is improved. In addition, the mutual attraction effect between dipole ions with positive and negative charges in the structure provides driving force for intrinsic self-repairing. And after being electrically and mechanically damaged, the material can be self-recovered, so that the service life of the material is prolonged.

The invention relates to a recyclable easily-degradable macromolecular surfactant for cleaning oily sludge and application of the recyclable easily-degradable macromolecular surfactant. The macromolecular surfactant is prepared by taking acrylamide, methacrylic acid long-chain alkyl ester and tertiary amino substituted methacrylate as raw materials through free radical polymerization. The macromolecular surfactant is dissolved in water to prepare a cleaning solution, and oily sludge can be efficiently eluted. CO2 and N2 are sequentially introduced into the oil-containing emulsion after the oil-containing sludge is cleaned, or diluted hydrochloric acid and a diluted alkali aqueous solution are sequentially added, the hydrophilic-hydrophobic property of the macromolecular surfactant is changed through pH regulation and control, separation of the macromolecular surfactant and an oil phase is achieved, petroleum resources are recycled, and recycling of the cleaning solution containing the macromolecular surfactant is achieved. The residual macromolecular surfactant in the cleaned deoiled sludge can be degraded under the action of environmental microorganisms.

The invention belongs to the technical field of oil field drilling, and particularly relates to a preparation method of modified sulfonated phenolic resin for drilling fluid, and the modified sulfonated phenolic resin is prepared by chemically bonding a functional monomer simultaneously containing sulfonic acid anions and quaternary ammonium cations in a phenolic resin structure in a free radical polymerization mode. The quaternary ammonium cation group adsorbs negatively-charged clay particles, the adamantyl group can be adsorbed in hydrophobic areas of the clay particles through association, and the sulfonated phenolic resin can be quickly adsorbed on the surface of the clay in a double adsorption mode of hydrogen bonds and electrostatic attraction. Besides, a large number of sulfonic acid anions can form a compact solvation layer after hydration, and a compact coating film can be formed when phenolic resin is quickly adsorbed on the surface of clay, so that the clay is prevented from being in contact with water, the stability of clay particles is realized, a compact mud cake can be formed, and the prepared phenolic resin has good filtrate loss reduction performance.

The invention discloses a mechanically interlocked isohydrocarbon-like structure hydrogel and a preparation method thereof, and belongs to the technical field of hydrogel sensing. The preparation method of the mechanically-interlocked isohydrocarbon-like structure hydrogel comprises the following steps: firstly, preparing a carbon nano network solution by using hydroquinone; and then mixing the carbon nano network solution, acrylamide, water, a cross-linking agent and a photoinitiator, and treating under ultraviolet irradiation to obtain the hydrogel. The preparation method comprises the following steps: introducing a three-dimensional carbon nano network, blending the three-dimensional carbon nano network with an acrylamide monomer, and carrying out in-situ free radical polymerization to construct the mechanical interlocking isohydrocarbon-like structure hydrogel. The carbon nano network provides a continuous porous framework, a polyacrylamide chain segment is embedded into pores of the carbon nano network in the polymerization process, and a stable isohydrocarbon-like structure is formed through physical winding, space nesting and mechanical interlocking. The prepared hydrogel has excellent mechanical property, adhesion property and strain response capability, and provides a reliable and economical material basis for a flexible strain sensing function.

The application belongs to the technical field of high polymer materials, and particularly relates to an ion conductive hydrogel, a sensor and a preparation method and application thereof. The ion conductive hydrogel comprises a double-network hydrogel and ion salts and alcohol dispersed in the double-network hydrogel; the first network of the double-network hydrogel is formed by cross-linking of sodium alginate, and the second network is formed by radical polymerization of unsaturated monomers. The second network is formed by radical polymerization of unsaturated monomers, and the double-network hydrogel is formed by cooperation of sodium alginate, so that the ion conductive hydrogel has excellent mechanical properties. The ion salts are added in the double-network hydrogel, and especially, an alcohol / water binary solvent system is introduced. Due to strong ion hydration and strong hydrogen bond interaction between water molecules and alcohol, ice crystallization is inhibited, so that the hydrogel still has good flexibility and conductivity below zero degrees.

The invention discloses a super-tough temperature-resistant self-repairing copolymer based on SBS acrylate dynamic synergistic reinforcement and a preparation method thereof, and belongs to the technical field of self-repairing materials in compositions of high-molecular compounds. The copolymer comprises SBS, an acrylate monomer, a dynamic bond functional monomer, an initiator, a cross-linking agent, a nano reinforcing agent and a temperature-resistant modifier, wherein the dynamic bond functional monomer comprises at least one of acryloyloxyethyl disulfide, acrylamide acryloyloxyethyl disulfide or anthracene methyl acrylate. The molecular structure of the dynamic bond functional monomer contains a carbon-carbon double bond and a disulfide bond, in the free radical polymerization reaction initiated by the initiator, the carbon-carbon double bond is opened and is subjected to a copolymerization reaction with an SBS chain segment or an acrylate chain segment, so that the disulfide bond enters the polymer chain segment, the dynamic disulfide bond can be reversibly broken and recombined at high temperature, and the dynamic bond functional monomer is obtained. The high-temperature viscoelasticity is maintained, the material is endowed with self-repairing capability, and the problem that the viscoelasticity of the material in the prior art is sharply reduced at high temperature (gt; 120 DEG C) is solved.

The invention discloses a polymeric dispersant, a preparation method, a pigment paste and a photocuring composition, the polymeric dispersant is characterized in that the polymeric dispersant is a terpolymer formed by controllable free radical polymerization of a structural unit A, a structural unit B and a structural unit C. The structural unit A is derived from alkyl (meth) acrylate; the structural unit B is derived from polyethylene glycol (methyl) acrylate; and the structural unit C is derived from an N-acryloyl carbazole monomer. The polymeric dispersant aims to overcome the defect that the flexibility of the anchoring group connection mode in the existing carbazole dispersant is too large, and the N-acryloyl carbazole monomer with an optimized structure and a ternary polymerization framework are adopted to realize more efficient and lasting anchoring with the pigment surface, so that the flocculation problem is solved, and the super-stable dispersion is realized.

The invention discloses an embolism microsphere and a preparation method thereof.The embolism microsphere is prepared through the following steps that a polycarboxylate microsphere is prepared by combining a free radical polymerization method and an emulsion polymerization method, and the polycarboxylate microsphere is obtained; and saponifying and hydrolyzing the polycarboxylate microspheres to hydrolyze the polycarboxylate microspheres to obtain hydroxyl polymer microspheres, and introducing an acidic group onto the hydroxyl polymer microspheres to obtain the embolism microspheres containing both the hydroxyl group and the acidic group. The embolism microsphere disclosed by the invention realizes high loading capacity and controllable release of the anti-tumor drug, realizes accurate embolism in blood flow, and improves the treatment effect of the drug.

The invention relates to the technical field of chemical engineering, and discloses a hydrogen peroxide stabilizer and a preparation method thereof.The stabilizer is obtained in the mode that alpha-chlorinated acrylic acid and functional monomers are subjected to free radical polymerization and then hydrolyzed; the functional monomer is obtained by firstly carrying out ammonolysis reaction on diethylenetriamine and allyl glycidyl ether to obtain an intermediate, then mixing the intermediate with sodium chloroacetate and carrying out reaction under an alkaline condition, and by introducing the functional monomer containing the carboxylic acid group, the stability of hydrogen peroxide is improved; and invalid decomposition caused by metal ion catalysis is reduced.

The invention discloses a self-adaptive hydrogel coupling agent as well as a preparation method and application thereof, belongs to the field of medical instruments, and particularly relates to a preparation method of the self-adaptive hydrogel coupling agent. The preparation method comprises the following steps: dissolving a main monomer, a functional monomer, a molecular weight regulator and a reinforcing filler in sterilized deionized water under dark and sterile conditions, carrying out a free radical polymerization reaction under the action of a persulfate solution and tetramethylethylenediamine, and carrying out dialysis and sterilization treatment to obtain the self-adaptive hydrogel coupling agent. The self-adaptive hydrogel coupling agent prepared by the invention eliminates tissue deformation caused by probe pressurization, significantly improves the accuracy of measurement of the actual distance of a target by ultrasound in an operation, and meanwhile, the self-adaptive hydrogel coupling agent is good in biocompatibility, can be sterile, is convenient to operate, and is suitable for open or endoscopic surgical wounds.

The invention provides a binder for a lithium ion battery, a preparation method of the binder, a positive pole piece and the lithium ion battery. The binder for the lithium ion battery is obtained by mixing a Diels-Alder dynamic bond cross-linked polyurethane prepolymer and a phenylboronic acid ester derivative and carrying out a free radical polymerization reaction under the action of an initiator, the Diels-Alder dynamic bond crosslinking type polyurethane prepolymer has a dynamic reversible six-membered ring crosslinking structure, and the crosslinking density of the six-membered ring crosslinking structure is 1.0 to 2.2 moL / m < 3 >. According to the binder for the lithium ion battery based on the dual-dynamic grid synergistic repair effect, a gradient conductive network is constructed by combining the carbon nanotubes, the carbon black and the vapor growth carbon fibers, and is finally applied to the lithium ion battery, so that the battery performance is effectively improved, and the synergistic bottleneck of energy density, cycle life and safety is solved.

The invention discloses a carboxyl-functionalized porous organic polymer, a preparation method thereof and application of the carboxyl-functionalized porous organic polymer in ammonia gas adsorption separation and sensing. The polymer is obtained by free radical polymerization, hydrolysis and acidification of monomers containing vinyl and ester groups, and has a mesoporous structure and a skeleton carboxyl functional group. The preparation method is simple and mild in condition. The polymer has excellent adsorption selectivity and high adsorption capacity on ammonia gas, the static adsorption capacity on the ammonia gas under the conditions of 298 K and 1 bar is not lower than 6.5 mmol / g, the ammonia gas can be efficiently separated from NH / N / H and NH / COs mixed gas, and the cycling stability is good. An ammonia gas sensor prepared by taking the graphene oxide as a sensitive material has linear or piecewise linear response to ammonia gas with the concentration of 1-100 ppm at room temperature, the detection limit is lower than 30 ppb, and the selectivity is excellent. The invention overcomes the defects of the existing ammonia gas adsorption separation material and sensor, has important significance for optimizing the ammonia production process and reducing pollution, and has wide application prospects.

The invention relates to the technical field of peep-proof film manufacturing, and discloses a high-light-transmittance peep-proof film based on surface modification and a preparation method of the high-light-transmittance peep-proof film. The preparation method comprises the following steps: sequentially carrying out plasma activation, ALD atomic layer deposition and HEMA carboxyl-based layer polymerization on a PET film to obtain a modified PET film; coating the modified PET film with a dispersion liquid prepared from a polystyrene-polymethylacrylic acid solution and graphene quantum dots to form a peep-proof layer; depositing a TiO2 layer and a SiO2 layer on the modified PET film to form a high refractive index layer; diamond particles, MoS2 nanosheets and resin are mixed and coated on the high-refractive-index layer to form the wear-resistant layer. The PET film is modified through plasma activation, atomic layer deposition and free radical polymerization, the physical adsorption limitation of a traditional coating is broken through, chemical covalent binding with a subsequent functional layer is achieved, meanwhile, a light scattering path is optimized by preparing a TiO2 / SiO2 alternating layer, and the peep-proof effect and the optical stability are improved.

The invention relates to the technical field of high polymer materials, in particular to a low-viscosity self-curing polyurethane acrylate composition and a preparation method thereof.The low-viscosity self-curing polyurethane acrylate composition is prepared from, by mass, (a) 50-80 parts of polyurethane acrylate prepolymer; (b) 1-10 parts of functional particles; (c) 10-30 parts of a reactive diluent; (d) 0.1-2 parts of a visible light initiator; (e) 0.1-2 parts of a leveling agent; and (f) 0.1-1 part of a deoxidizing auxiliary agent. According to the invention, light response is expanded to a visible light wave band, natural light can trigger free radical polymerization and disulfide bond oxidative cleavage through component and structural design to realize controllable release of water, the system viscosity of an acrylate group is further reduced to 1500mPa. S or below, and the adhesive property and weather resistance are better after curing.

A toner comprises a toner particle comprising a resin A and a resin B, wherein the resin A has a structure represented by a predetermined general formula, and the resin B has a monomer unit represented by a predetermined general formula, and a toner manufacturing method comprises a step of dispersing a toner base particle comprising the resin B in an aqueous medium to obtain a toner slurry, and a step of adding a radical polymerization initiator and a monomer composition comprising a monomer represented by a predetermined general formula to the resulting toner slurry to form the resin A on a surface of the toner base particle.

The invention discloses a weather-resistant heat-insulation waterproof coating for an outer wall and a preparation method of the weather-resistant heat-insulation waterproof coating. The waterproof coating comprises the following components in parts by weight: 27-35 parts of modified acrylate polymer emulsion, 35-50 parts of composite filler, 5-10 parts of a curing system, 4-8 parts of a coalescing agent, 0.1-0.5 part of a defoaming agent, 0.3-0.8 part of a flatting agent, 0.2-0.6 part of a mildew preventive, 0.5-1.0 part of a thickening agent and 1-5 parts of a pH regulator, the modified acrylate polymer emulsion is prepared by carrying out pretreatment and silanization modification on cardanol and then carrying out monomer pre-emulsification and free radical polymerization. According to the waterproof coating provided by the invention, a Si-O-C network and a hindered amine free radical capture system are introduced, so that the weather resistance is improved; fluoride-nano silicon dioxide is used for constructing a roughness-low surface energy synergistic waterproof interface; acid-washed fly ash floating beads, silicon dioxide aerogel and expanded perlite filler are compounded to form multiple heat conduction scattering paths so as to realize cross-scale porous filler heat preservation; the waterproof coating can serve in complex environments with large temperature difference fluctuation, acid rain and the like.