241 results about "Polymethacrylic Acids" patented technology

The invention relates to a high / low-temperature-resistant wear-resistant tear-resistant fluorosilicone rubber compound and a preparation method thereof, and belongs to the technical field of special rubber materials, the high / low-temperature-resistant wear-resistant tear-resistant fluorosilicone rubber compound comprises the following components: raw fluorosilicone rubber, a reactive liquid rubber compatibilizer, a reinforcing filler, a tear-resistant aid, a high-temperature-resistant aid, a vulcanizing agent, an accelerant, an anti-aging agent and an anti-attrition filler, the provided reaction type liquid rubber compatibilizer contains vinyl carboxyl liquid fluorosilicone rubber, the tear-resistant auxiliary agent contains zinc polymethacrylate, the high-temperature auxiliary agent contains vinyl fluorosilane modified carbon nanotubes, and the anti-friction filler contains molybdenum disulfide and layered nano zirconium phosphate which are treated by oxygen plasma. The high and low temperature resistance stability, oil resistance, wear resistance and tear strength of the fluorosilicone rubber are synergistically improved by regulating and controlling the multi-cross-linked network structure of the fluorosilicone rubber, strengthening the interface action of the rubber and the filler and optimizing the composite vulcanization system, meanwhile, structuralization of a rubber compound is prevented by optimizing the preparation process, and the requirement for adaptability to severe working conditions is met.

The invention relates to the technical field of sewage treatment, and provides a magnetic multi-effect multi-element composite amphiphilic particle as well as a preparation method and application thereof. The particle comprises a core-shell separated magnetic Fe3O4 particle core and a shell layer, wherein the shell layer is a silicon dioxide / titanium dioxide hybrid shell layer with a fine hole structure; the outer surface of the shell layer comprises a hydrophilic part and a hydrophobic part, the hydrophilic part has an amino group, the amino group is grafted with polydopamine, and gallic acid and catechinic acid are compounded on the polydopamine; poly (diethylaminoethyl methacrylate) is grafted on the inner surface of the shell layer and the surface of the magnetic Fe3O4 particle core. The magnetic multi-effect multi-component composite amphiphilic particle provided by the invention has excellent emulsifying performance and can realize oil-water separation; meanwhile, partial hydrolyzed polyacrylamide can be selectively adsorbed, and oily sewage containing partial hydrolyzed polyacrylamide can be efficiently treated in one step.

The invention belongs to the technical field of lithium ion batteries, and relates to a gel electrolyte based on in-situ polymerization and a preparation method of a lithium ion battery. The preparation method comprises the following steps: adding a cross-linking monomer with a structure with more than three arms and a polyfluorinated acrylate monomer into an electrolyte, and adding an initiator to obtain a monomer solution; then injecting into the lithium ion battery, placing and aging to enable the monomer solution to fully infiltrate a positive plate, a negative plate and a diaphragm; and performing thermal polymerization on the aged battery cell in situ to obtain the gel electrolyte lithium ion battery based on in-situ polymerization. According to the invention, a polymethylacrylic acid based gel electrolyte is prepared by using a method of in-situ polymerization of a polyfluorine monomer with interface film-forming characteristics and polymerization characteristics and a multi-arm cross-linking monomer with high polymerization activity; wherein the monomer with double characteristics can participate in polymerization, and the residual monomer can serve as an interface film-forming additive, so that more LiF is formed in a solid electrolyte membrane of a negative electrode and a positive electrode-electrolyte phase, and the interface stability is enhanced.

The invention relates to the field of aerogel composite materials, in particular to a high-temperature-resistant aerogel calcium silicate composite material and a preparation method thereof, and solves the problems that the mechanical property of aerogel is reduced and the service life is shortened due to the fact that the interface bonding force between an existing aerogel phase and a reinforced phase is easily limited by the material and influenced by modified substances. The preparation method comprises the following steps: firstly, dispersing calcium salt in an aqueous solution of ethanol to form a calcium salt solvent, sequentially adding polymethylacrylic acid and 1, 4-butanediol diglycidyl ether to form a calcium salt gel precursor, placing activated fibers in a polyphenol chitosan solution for reaction, placing reinforced fibers in a molybdenum disulfide turbid solution for ultrasonic dispersion, and drying to obtain the composite material. Then carrying out hydrothermal reaction, immersing the composite fibers into a calcium salt gel precursor for negative pressure vacuum adsorption, and drying to form the high-temperature-resistant aerogel calcium silicate composite material. The interface bonding capacity and the heat resistance of the composite material can be enhanced, and the mechanical property and the heat insulation property of the material at high temperature are remarkably enhanced.

The invention relates to the technical field of sewage treatment, and provides a magnetic multi-effect organic-inorganic composite amphiphilic particle as well as a preparation method and application thereof. The magnetic multi-effect organic-inorganic composite amphiphilic particle comprises a core-shell separated magnetic Fe3O4 particle inner core and a silicon dioxide shell layer, the outer surface of the silicon dioxide shell layer comprises a hydrophilic part and a hydrophobic part, the hydrophilic part is used for modifying the outer surface of the silicon dioxide shell layer by an amino-containing silane coupling agent, so that the outer surface of the silicon dioxide shell layer is provided with amino, and the amino is grafted with polydopamine; the inner surface of the silicon dioxide shell layer and the surface of the magnetic Fe3O4 particle inner core are grafted with poly (diethylaminoethyl methacrylate), and the silicon dioxide shell layer has a fine hole structure. The magnetic multi-effect organic-inorganic composite amphiphilic particle provided by the invention has excellent emulsifying performance and can realize oil-water separation; and meanwhile, the adsorbent also has a selective adsorption characteristic, and can be used for efficiently treating oily sewage containing part of hydrolyzed polyacrylamide in one step.

The invention provides an adsorption material and a preparation method and application thereof, the adsorption material comprises a carrier and an endotoxin affinity binding ligand, the endotoxin affinity binding ligand comprises a recombinant C factor protein, and the carrier and the recombinant C factor protein are connected through a spacer arm; wherein the carrier comprises at least one of resin, chitosan, cellulose, agarose and glucan; the spacer arm comprises at least one of modified polyethylene glycol, polyvinyl pyrrolidone, polymethylacrylic acid-2-hydroxyethyl ester, polyvinyl alcohol, polyacrylic acid, hexamethylenediamine, divinyl sulfone and glutaraldehyde, and at least one end of the modified polyethylene glycol is provided with carboxyl, aldehyde or amino. The adsorption material provided by the invention can efficiently adsorb endotoxin, has the characteristics of low toxicity risk and excellent blood compatibility, and can improve the safety of blood purification.

The invention relates to a preparation method of a water electrolysis hydrogen production composite electrode based on a zwitterionic polymer binder. According to the method, a traditional ionic binder Nafion is replaced with a zwitterionic polymer polysulfobetaine methacrylate, an electrode-electrolyte interface is optimized through a unique electrically neutral hydration layer structure, the rapid desorption behavior of bubbles is enhanced, and efficient transmission of reaction ions is also promoted; and regulating and controlling the mass ratio of the PSBMA binder to the catalyst by using a spraying process. The invention aims to overcome the defects of high cost, insufficient mass transfer and poor interface stability of the existing Nafion binder, and provides the composite electrode taking PSBMA as the binder and the preparation method of the composite electrode, and the provided composite electrode is simple in preparation process and controllable in cost, and has good popularization and application prospects.

The invention relates to the field of sensors, and discloses an acoustic sensor and a preparation method thereof. The acoustic sensor comprises an upper support body, an acoustic sensing layer and a lower support body; the acoustic sensing layer comprises a first electrode layer, a flexoelectric material layer and a second electrode layer which are stacked in sequence; the flexoelectric material layer contains a two-dimensional layered material and an ion regulator; the two-dimensional layered material is selected from at least one of graphene oxide, boron nitride, vermiculite, molybdenum disulfide, tungsten diselenide, tungsten disulfide, black phosphorus, Mxene, molybdenum ditelluride and tungsten trioxide; the ion regulator is selected from one or more than two of polystyrolsulfon acid, polyethylene glycol, poly (diallyldimethylammonium chloride), carboxyl ethylene copolymer, polyethylene sulfonic acid, polymethylacrylic acid, polyethylene phosphoric acid, polyvinylamine, sodium alginate, silk fibroin and carboxylated nanofiber. The acoustic sensor operates by using the flexoelectric effect, and has higher sensitivity and high Young modulus.

The invention relates to the technical field of marking coatings, and discloses an all-weather double-component reflective porcelain crystal marking coating as well as a preparation method and application thereof. The marking paint comprises a first component, a second component and a modified nano titanium dioxide component, wherein the first component comprises poly (alpha-cyanomethyl acrylate); the second component comprises polymethylacrylic acid; the modified nano titanium dioxide component is modified through a silane coupling agent, so that poly (alpha-cyanomethyl acrylate) and polymethylacrylic acid are bonded together through chemical bonds. The marking paint can be naturally dried and hardened at the temperature of 0-30 DEG C, and the drying and hardening time is 20-30 min. The marking paint is simple in preparation process, integrates multiple properties, does not need heating equipment during use, and has a wide market prospect.

The invention discloses a multi-purpose anti-radiation material and a preparation method thereof, and relates to the technical field of anti-radiation materials, the multi-purpose anti-radiation material comprises the following raw materials by weight: 30-50 parts of gadolinium polymethacrylate, 25-40 parts of a multi-element hybrid filler, 40-70 parts of chloroprene rubber, and 50-80 parts of paraffin. According to the multi-purpose anti-radiation material and the preparation method thereof, in the preparation process of gadolinium polymethacrylate, molecular chains are connected through covalent bonds to form a stable three-dimensional network structure, so that the chemical stability is improved, the stability of the anti-radiation material is improved, the service life of the anti-radiation material is prolonged, gadolinium ions are uniformly distributed in polymer chains, and the anti-radiation effect is improved. The effective concentration and the distribution uniformity of gadolinium ions are increased, so that the anti-radiation effect of the material is improved, meanwhile, the molecular chain structure of the polymer can also generate a synergistic effect with the gadolinium ions, and the absorption capacity to rays is further enhanced.

The invention relates to the technical field of sewage treatment, and provides a magnetic multi-effect titanium-coated iron amphiphilic particle as well as a preparation method and application thereof. The particle comprises a magnetic Fe3O4 particle inner core and a titanium dioxide shell layer separated from the magnetic Fe3O4 particle inner core in a core-shell mode, the outer surface of the titanium dioxide shell layer comprises a hydrophilic part and a hydrophobic part, the inner surface of the titanium dioxide shell layer and the surface of the magnetic Fe3O4 particle inner core are grafted with poly (diethylaminoethyl methacrylate), and the titanium dioxide shell layer is of a fine hole structure. The particles provided by the invention have excellent emulsifying performance, liquid drops stabilized by the particles can be controlled by an external magnetic field, and enrichment and migration of oil drops are realized, so that oil-water separation is realized; meanwhile, partial hydrolyzed polyacrylamide can be selectively adsorbed, and oily sewage containing partial hydrolyzed polyacrylamide can be efficiently treated in one step; the titanium dioxide shell layer on the surface of the particle can effectively improve the acid resistance and alkali resistance of the amphiphilic particle.

The invention provides a transparent polylactic acid film with antibacterial, anti-ultraviolet aging and high toughness, and a preparation method and application thereof, the transparent polylactic acid film comprises the following raw materials by weight: 80-99 parts of polylactic acid, 10-20 parts of poly (methacrylic acid-2, 2, 6, 7-tetramethyl-4-piperidine-2, 2, 6, 7-tetramethyl-4-piperidine-2, 6, 7-tetramethyl-4-piperidine-2 1 to 20 parts of 2, 2, 6, 6-tetramethyl-4-piperidyl ester-co-methyl methacrylate)-poly (butyl acrylate) nano microspheres, 0.5 to 2 parts of a lubricant and 0.2 to 0.4 part of an antioxidant. According to the polylactic acid film, the poly (methacrylic acid-2, 2, 6, 6-tetramethyl-4-piperidinyl ester-co-methyl methacrylate)-poly (butyl acrylate) nano microspheres are adopted, so that the polylactic acid film has high toughness and also has antibacterial property, ultraviolet aging resistance and high transparency.

The invention discloses an enzyme-labeled secondary antibody polymer for immunohistochemical staining. The enzyme-labeled secondary antibody polymer is formed by combining a secondary antibody and a polymer skeleton, the polymer is labeled by a labeling enzyme, the polymer skeleton is polymethylacrylic acid-2-hydroxyethyl ester, and the labeling enzyme is connected to the polymethylacrylic acid-2-hydroxyethyl ester through a coupling agent. According to the invention, polymethylacrylic acid-2-hydroxyethyl ester is used for modifying protein, so that the immunogenicity and antigenicity are reduced, the hydrolysis of protease can be weakened, and the solubility of protein molecules is improved. The enzyme-labeled secondary antibody polymer is applied to immunohistochemical staining and has high specificity and sensitivity.

The application discloses a kind of color fluorescent particles for electrophoretic display, it is related to the field of photoelectric display, color fluorescent particle is core-shell structure, color fluorescent particle includes successively from inside to outside: core, intermediate layer and shell layer;Core is pigment unit, intermediate layer is quantum dot layer coated on the surface of pigment particle, shell layer includes high molecular polymer selected from one or more of polymethyl methacrylate lauryl, polymethyl methacrylate, and is constituted, shell layer is coated on the surface of intermediate layer;Color fluorescent particle contains intrinsic base color presented by pigment unit and compensation fluorescence excited by quantum dot layer receiving light;Compensation fluorescence is compatible with the color of intrinsic base color.In addition, the application also provides the preparation process of color fluorescent particle.The color fluorescent electrophoretic particle provided by the application is pure and full of color, and the color is more brilliant under ultraviolet excitation.

The invention provides a wide-temperature-range high-damping polyurethane IPN material, and in the preparation of the polyurethane IPN material, the R value of polyurethane is accurately controlled to be 1, so that an isocyanate group (-NCO) and a hydroxyl group (-OH) in polyhydric alcohol are completely reacted in a stoichiometric ratio, and a stable carbamate group (-NH-COO-) is generated. A polybutyl methacrylate molecular chain introduced into the system contains strong polar ester groups (-COO <->), and the polar groups and-NH <-> in carbamate groups form strong intermolecular hydrogen bonds. The multiple hydrogen bonds interact to jointly form a complex network structure of the IPN material, and the hydrogen bonds between the hard segment and the soft segment of the polyurethane and the interface hydrogen bonds between the polyurethane and the polybutyl methacrylate have a synergistic effect, so that the internal friction between molecular chains is remarkably increased. The multi-layer and multi-type intermolecular acting force synergistic effect enables the polyurethane IPN material to show more excellent damping performance.

The invention provides a device for real-time simulation of a chemical reaction in an actual ambient atmosphere, the device comprises a main reactor, the main reactor sequentially comprises an outer negative-pressure cooling cavity, a middle transverse reaction cavity and an inner sample gas permeation and diffusion cavity from outside to inside, the outer negative-pressure cooling cavity is provided with a polymethylacrylic acid plate and a reflection light plate, and the middle transverse reaction cavity is provided with an inner sample gas permeation and diffusion cavity. A negative-pressure pump, an electrostatic eliminating meter, a heat exchanger and a turbulent flow fan are arranged in the outer-layer negative-pressure cooling cavity, a cylindrical membrane cabin made of polytetrafluoroethylene is arranged on the middle-layer transverse reaction cavity, a driving assembly for driving the middle-layer transverse reaction cavity to rotate is mounted in the axial direction of the middle-layer transverse reaction cavity, and a permeable membrane is arranged on the inner-layer sample gas permeation and diffusion cavity. The permeable membrane is in contact with the middle-layer transverse reaction cavity, the front end and the rear end of the inner-layer sample gas permeation and diffusion cavity are connected with an airflow assembly, and the main reactor is connected with a refrigeration system, a detection system, a seed aerosol injection system and a control box. The three-layer structural design solves the problem that the atmospheric chemical reaction cannot be continuously simulated in real time in the prior art, the gas exchange rate is remarkably improved, the aerosol wall loss is reduced, and the chemical reaction process of the ambient atmosphere is fully and truly simulated.

The invention provides an oil-in-water emulsified cosmetic containing (a) an aqueous medium,(b) two or more higher fatty acids of 12 to 24 carbon atoms and alkali metal salts thereof,(c) at least one compound selected from the group consisting of monoalkyl glyceryl ethers having an alkyl group of 12 to 24 carbon atoms and monoalkenyl glyceryl ethers having an alkenyl group of 12 to 24 carbon atoms,(d) a thickener comprising (d-1) a polysaccharide derived from a microorganism and (d-2) a (meth)acrylic-based polymer selected from the group consisting of a poly(meth)acrylic acid salt and a polymer including at least one selected from the group consisting of a (meth)acrylic acid ester, a (meth)acryloylalkyltaurine and a salt thereof as a structural unit, and(e) a nonionic surfactant.

COMPOSITION COMPRISING A NEUTRALIZED POLY(METH)ACRYLIC ACID POLYMER The present invention relates to a composition comprising: (a) at least one neutralized poly(meth)acrylic acid polymer; (b) at least one organic acid or salt thereof; and (c) water, wherein the amount of the neutralized poly(meth)acrylic acid polymer (a) is 0.5% by weight or more, relative to the total weight of the composition. The composition according to the present invention may exhibit a sorbet-like appearance and a textural transformation (from a gel / cream texture to a liquid texture) during application and an absence of a sticky sensation after application. Figure for abstract: none

According to the oral care solution composition disclosed by the invention, glucanase is encapsulated by using a pH sensitive microcapsule, so that the stability and activity of enzyme in a complex oral environment are maintained. The pH-sensitive microcapsule is prepared from boric acid modified poly (2-hydroxyethyl methacrylate) (PHEMA), a boric acid group serves as a lactic acid specific ligand and is covalently bound and polymerized with a monomer of HEMA to form a pH-sensitive polymer, and in an oral acidic environment, disintegration of the polymer promotes release of glucanase, it is ensured that enzyme is released at a needed place and time, and the pH-sensitive microcapsule has the advantages that the pH-sensitive microcapsule can be used for preparing the oral cavity. Therefore, glucan in the oral cavity is accurately decomposed, bacterial adhesion and biofilm formation are reduced, and improvement of oral cavity microorganism balance and improvement of user experience are facilitated.

The application relates to the technical field of sewage treatment, and provides a magnetic multi-effect organic-inorganic composite amphiphilic particle as well as a preparation method and application thereof. The magnetic multi-effect organic-inorganic composite amphiphilic particle comprises a magnetic Fe3O4 particle core and a silica shell layer which are separated from each other; the outer surface of the silica shell layer comprises a hydrophilic part and a hydrophobic part; the hydrophilic part is obtained by modifying the outer surface of the silica shell layer with a silane coupling agent containing amino groups so that the amino groups are grafted on the outer surface of the silica shell layer; the inner surface of the silica shell layer and the surface of the magnetic Fe3O4 particle core are grafted with poly (dimethylaminoethyl methacrylate); and the silica shell layer has a micro-pore structure. The magnetic multi-effect organic-inorganic composite amphiphilic particle provided by the application has excellent emulsifying performance and can realize oil-water separation; meanwhile, the magnetic multi-effect organic-inorganic composite amphiphilic particle also has selective adsorption characteristics and can efficiently treat oil-containing sewage containing partially hydrolyzed polyacrylamide in one step.

The purpose of the invention is both to suppress viscous resistance loss at compressor start (normal temperature) and improve oil film load performance during operation (high temperature) in a refrigerating machine oil and a refrigerating device. A refrigerating machine oil according to the present disclosure is for a refrigerating device in which propane is sealed therein as a refrigerant, said refrigerating machine oil containing an ester-based oil having a viscosity grade of ISO VG32 or less, and a viscosity index improver containing a polymethacrylic acid ester having a C1-18 alkyl substituent, the concentration of the polymethacrylic acid ester being from 0.6 to 6 wt%.

The invention provides an anti-cancer medicine and food homologous composition and a preparation method thereof. The composition is prepared from the following components in parts by weight: 5 to 10 parts of lipoic acid, 30 to 50 parts of nano curcumin, 2 to 7 parts of berberine, 50 to 100 parts of beta-glucan, 15 to 35 parts of polymethylacrylic acid, 15 to 25 parts of herba hedyotidis diffusae extract, 7 to 15 parts of scutellaria barbata baicalein, 25 to 55 parts of astragalus polysaccharide, 8 to 18 parts of coix seed ester and 10 to 15 parts of cordyceps cicadae. Through a space-time targeting synergistic release mechanism of a bionic nanocellulose skeleton and in combination with pH / enzyme double-response intelligent regulation and control, three-stage precise synergistic effects of oxidation resistance, apoptosis promotion and immune activation are realized, the limitation that a traditional medicinal and edible composition is poor in targeting property, low in synergistic efficiency and uncontrollable in toxicity is broken through, and the medicinal and edible composition has a broad application prospect. High-efficiency and low-toxicity tumor multi-channel synergistic intervention is achieved in a natural component system for the first time, and the actual effect of the whole medicinal and edible composition on cancer and swelling resistance is improved.

The present application relates to sewage treatment technical field, provide a kind of magnetic multi-effect polymer inorganic hybrid amphiphilic particle and its preparation method and application.The particle includes magnetic Fe3O4 Particle core and the shell layer separated from the shell of the magnetic Fe3O4 Particle core, the shell layer is the hybrid shell layer of silica / titanium dioxide with micro-pore structure;The inner surface of the shell layer and the surface of magnetic Fe3O4 Particle core are grafted with poly (diethylaminoethyl methacrylate);The outer surface of the shell layer includes hydrophilic part and hydrophobic part, the hydrophilic part has amino group, the amino group is grafted polydopamine, and gallic acid is compounded on the polydopamine.The magnetic multi-effect polymer inorganic hybrid amphiphilic particle provided by the present application has excellent emulsifying performance, can realize oil-water separation;Meanwhile, it can selectively adsorb part of hydrolyzed polyacrylamide, and can efficiently treat oil-containing sewage containing part of hydrolyzed polyacrylamide in one step.

A method for preparing an exhaust gas purifying catalytic device, comprising: providing a catalytic promoter loaded with a precious metal, and providing an oxide carrier; pulping together the oxide carrier, the catalytic promoter loaded with the precious metal, a binder, a functional regulator and water, to obtain a catalyst slurry; placing the catalyst slurry on a ceramic carrier, and obtaining an exhaust gas purifying catalytic device after the catalyst slurry is dried. The functional regulator comprises at least one of polyhydroxyethyl acrylate and polyhydroxyethyl methacrylate.

The application belongs to the technical field of sodium ion batteries, and particularly relates to a binder composition, a sodium ion battery positive electrode slurry and a sodium ion battery. The binder composition comprises 0.5-100% and 0-99.5% of a first binder and a second binder by mass percentage, the first binder is one or more of polyacrylic acid, polymethacrylic acid, poly-methyl-vinyl-ether-copoly-maleic acid, and the second binder is one or more of polyvinylidene fluoride, polyacrylonitrile-based binder, polyurethane-based binder and polyimide-based binder. A high-molecular polymer containing a carboxyl group (-COOH) is used as a binder composition component to prepare the sodium ion battery positive electrode slurry. The carboxyl group can be neutralized with alkaline substances in the positive active material of the sodium ion battery positive electrode slurry, so as to ensure the uniformity and fluidity of the positive electrode slurry, to obtain a uniform sodium ion battery positive electrode sheet, and to obtain a sodium ion battery with good electrochemical stability.

The invention discloses an enzyme-labeled secondary antibody polymer for immunohistochemical staining. The enzyme-labeled secondary antibody polymer is formed by combining a secondary antibody with a polymer backbone, the polymer is labeled with a marker enzyme, the polymer backbone is polymethacrylate-2-hydroxyethyl ester, and the marker enzyme is connected to polymethacrylate-2-hydroxyethyl ester through a coupling agent. The present invention utilizes polymethacrylate-2-hydroxyethyl ester to modify proteins, reduce immunogenicity and antigenicity, and can also weaken the hydrolysis of proteases and increase the solubility of protein molecules. The enzyme-labeled secondary antibody polymer is applied to immunohistochemical staining and has high specificity and sensitivity.

The invention discloses a radiation-resistant antifouling paint and a preparation method thereof. The radiation-resistant antifouling paint comprises the following components in percentage by mass: 20-30% of radiation-resistant antifouling resin; 4-10% of a dissolution auxiliary agent; 10-20% of a radiation-resistant filler; 30-50% of an antifouling agent; 0.5%-2% of a surfactant; 0.5-2% of an anti-settling auxiliary agent; and 5-15% of a solvent. According to the radiation-resistant antifouling coating disclosed by the invention, through a benzene ring structure in a resin structure and a shielding effect of mica and flake graphite powder in the coating, the risk of paint film pulverization, cracking and failure caused by radiation can be effectively avoided, and under the stable hydrolysis effect of the main chain degradation type polysilane methacrylate self-polishing resin in seawater, the radiation-resistant antifouling coating has the advantages of good anti-fouling effect and good anti-fouling effect. The antifouling agent can be released continuously and stably, long-term antifouling performance is achieved, and normal operation of underwater equipment and ships is guaranteed.

The present disclosure provides micelles comprising a plurality of block copolymers, the micelles comprising: (i) a core comprising at least a portion of a poly(alkyl acrylate) block of one or more block copolymers; and (ii) an outer layer comprising at least a portion of a poly(aryl acrylate) block or a poly(aryl methacrylate) block of one or more block copolymers. The present disclosure also includes polymer compositions, polymer films, and devices (e.g., orthodontic appliances) comprising the same. Methods of making and using the micelles, polymer compositions, polymer films, and devices (e.g., orthodontic appliances) are also disclosed. Methods of producing polymer compositions and methods of using the compositions to make (e.g., by 3D printing) medical devices (e.g., orthodontic appliances) are also provided herein.

The invention belongs to the technical field of ceramic material preparation, and provides an aluminum oxide granulation powder composition and an aluminum oxide granulation powder preparation method, the aluminum oxide granulation powder composition comprises the following components by weight: 0.1-1 part of a dispersant; 100 parts of alumina powder; 5 to 10 parts of a binder; 0.3 to 1 part of a thickening agent; 0.1 to 0.5 part of a lubricant; the binder is selected from at least one of polyacrylic resin or polymethylacrylic acid resin, and the dispersing agent is ammonium polyacrylate.

The present application relates to fluorescent nanoparticles based on fluorinated zwitterionic random copolymer and its preparation method and application, the fluorescent nanoparticles include the single chain nanoparticles formed by poly trifluoroethyl methacrylate-co-methacryloyloxyethyl sulfobetaine, the molecular chain end of the poly trifluoroethyl methacrylate-co-methacryloyloxyethyl sulfobetaine is connected with ACQ type group selected from anthryl, perylene imide group and pyrene base or AIE type group selected from tetraphenyl ethylene base, carbazole base and cyanine-containing triphenyl ethylene group.The fluorescent nanoparticles based on the poly trifluoroethyl methacrylate-co-methacryloyloxyethyl sulfobetaine of the present application that terminal fluorescent group is terminated, has excellent controllable fluorescent luminescence performance.It is considered that the single chain nanoparticles have isolation effect, avoid the fluorescence quenching effect of ACQ type group, and can provide limited microenvironment for AIE type group, ensure the fluorescent luminescence performance of nanoparticles.