179 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 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 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 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 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 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

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 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.

The invention belongs to the field of membrane separation materials, and discloses a dual-responsiveness oil-water separation membrane and a preparation method and application thereof.The preparation method comprises the steps that 2-cyano isopropyl dithiobenzoate serves as a chain transfer agent, dimethylaminoethyl methacrylate and vinyltriethoxysilane serve as monomers, and the monomers are subjected to a reaction at the temperature of 60-80 DEG C to obtain a reaction product; the preparation method comprises the following steps: preparing poly (dimethylaminoethyl methacrylate)-b-vinyltriethoxysilane; the preparation method comprises the following steps: preparing a PVDF / PDV film substrate on the basis of poly (dimethylaminoethyl methacrylate)-b-vinyltriethoxysilane; the surface of the PVDF / PDV membrane substrate is modified with a zwitterionic polymer, and the super-hydrophilic oil-water separation membrane is obtained; the surface of the super-hydrophilic oil-water separation membrane is modified with methacrylic acid 4-(trifluoromethoxy phenyl diazene) phenyl ester, and the dual-responsiveness oil-water separation membrane is obtained. The preparation process and technology are simple, and the dual-responsiveness oil-water separation membrane has high separation flux, excellent oil-water separation efficiency and separation performance on different oil-in-water emulsions.

The invention discloses a preparation method of a long-acting light functional inorganic oxide additive for an agricultural film, which comprises the following steps: mixing inorganic oxide and water to obtain slurry A, adding a polymethylacrylic acid dispersing agent into the slurry A, grinding in a stirring mill to obtain slurry B, supplementing the dispersing agent into the slurry B, sanding until the particle size reaches 100-300 nm to obtain slurry C, and drying to obtain the long-acting light functional inorganic oxide additive for the agricultural film. Adding a silane coupling agent into the slurry C, performing stirring reaction in a stirring mill, then performing drying to obtain modified powder, mixing the powder with polyethylene, and performing melt extrusion granulation to obtain an additive; according to the invention, a physical-chemical hybrid interface layer is constructed on the surface of an inorganic oxide by adding a polymethylacrylic acid dispersing agent and then adding a silane coupling agent, so that the particle size of the inorganic oxide is reduced, and the interface bonding force with polyethylene is enhanced through a covalent bond; the agricultural film prepared from the modified inorganic oxide additive can maintain the light function characteristic of inorganic oxide, and the light transmittance of the agricultural film prepared from the modified inorganic oxide additive is superior to that of an agricultural film prepared from an unmodified inorganic oxide additive.

The present invention discloses a preparation process of menthol ointment, belonging to the technical field of ointments. The process uses cyclodextrin modified by hydroxyethyl polymethacrylate and quaternary ammonium salt as a carrier to encapsulate menthol molecules, enhancing the stability of the menthol ointment. The addition of hydroxyethyl polymethacrylate can act as a thickening agent and a stabilizer, improving the physical stability of the ointment while forming hydrogen bond interactions with menthol molecules; the quaternary ammonium salt has broad-spectrum antibacterial activity, which can effectively inhibit the growth of bacteria, fungi and certain viruses, and the repulsion between cations further improves the dispersibility of cyclodextrin. This modified structure can prevent the volatilization of menthol, reduce losses, and also avoid the reaction of menthol with air and other substances, thereby improving the stability of menthol; it can control the release time, allowing the cooling sensation of menthol to be slowly and durably released during use, prolonging the use effect; it can mask the pungent odor, making the product more acceptable.

The invention belongs to the field of coatings, and discloses a high-entropy coating for a building glass coating and a preparation method of the high-entropy coating, and the high-entropy coating is prepared from the following raw materials in parts by weight: 25-30 parts of high-entropy material powder; 10 to 15 parts of coated titanium dioxide powder; 20 to 30 parts of alcohol soluble acrylate resin; 10 to 15 parts of absolute ethyl alcohol; 3-7 parts of a polymethylacrylic acid ammonium salt dispersing agent; 6-8 parts of a polyether modified organosilicon leveling agent; 4-6 parts of a polyether modified silicone defoaming agent; 3 to 5 parts of an associated polyurethane thickening agent; 8 to 10 parts of a benzotriazole ultraviolet light absorber; 1 to 4 parts of sodium tetraborate; 4-5 parts of mixed phosphate; and 1 to 4 parts of potassium hydrogen phthalate. The high-entropy coating for the building glass coating can comprehensively overcome the defects of an existing coating, and has important practical significance and wide application prospects.

The application relates to the sewage treatment technical field, and provides a magnetic multi-effect dual-parent hybrid particle as well as a preparation method and application thereof. The magnetic multi-effect dual-parent hybrid particle comprises a core-shell separated magnetic Fe3O4 particle core and a shell layer, the shell layer is a silica / titanium dioxide hybrid shell layer with a micro-pore structure, the outer surface of the shell layer comprises a hydrophilic part and a hydrophobic part, and the inner surface of the shell layer and the surface of the magnetic Fe3O4 particle core are grafted with poly (diethylaminoethyl methacrylate). The magnetic multi-effect dual-parent hybrid particle provided by the application has excellent emulsifying performance, can realize oil-water separation, can selectively adsorb partially hydrolyzed polyacrylamide, and can efficiently treat oil-containing sewage containing partially hydrolyzed polyacrylamide in one step.

The application discloses a tissue adhesive and a preparation method and application thereof, and belongs to the field of medical materials.The tissue adhesive comprises a copolymer composed of at least one of acrylic acid and methacrylic acid and a hydrochloride salt, the hydrochloride salt is at least one of 2-aminoethyl methacrylic acid ester hydrochloride and 2-aminoethyl acrylic acid ester hydrochloride, and the tissue adhesive can further comprise a crosslinked polymer formed by crosslinking at least one of polyacrylic acid and polymethacrylic acid with a polymer, and the polymer is formed by polymerization of the hydrochloride salt and a zwitterionic betaine.The copolymer can quickly absorb moisture on a wet tissue surface to form a gel and adhere to the tissue surface, so that a soft tissue wound, especially a low-pH microenvironment soft tissue wound, is closed; and the crosslinked polymer can be firmly combined on the surface of the copolymer and quickly form an anti-adhesion gel, which effectively prevents the surrounding tissue from being adhered after an operation as a physical barrier.

The invention discloses a mirror surface antifogging material, which is prepared from the following raw materials: a perfluoro solvent, perfluoropolyether and an adhesion auxiliary agent, and the adhesion auxiliary agent is polymethyl methacrylate and / or poly (hydroxyethyl methacrylate). The mirror surface anti-fog material is suitable for visual reflectors such as glass mirror surfaces, silver mirrors and aluminum mirrors, a transparent nano hydrophobic film can be formed on the mirror surfaces through simple spraying at normal temperature, the light transmittance of the formed film layer is high, and the mirror surface anti-fog material has the advantages of clear vision, long anti-fog time, fast film forming, no peculiar smell, simple operation and the like, and is suitable for popularization and application. The anti-fog mirror can be applied to articles such as bathroom mirrors, cosmetic mirrors, glasses and the like in daily life.

The invention relates to the technical field of hemostatic materials, and provides chitosan-based in-situ self-gel powder as well as a preparation method and application thereof. The chitosan-based in-situ self-gel powder provided by the invention comprises modified chitosan-based powder and oxidized polysaccharide powder, the modified chitosan-based powder is prepared from poly (3-sulfopropyl methacrylate potassium salt) grafted chitosan and poly [2-(methylacryloyloxy)-ethyltrimethyl ammonium chloride] grafted chitosan. The chitosan-based in-situ self-gelling powder provided by the invention has an in-situ self-gelling function, can quickly absorb water to realize self-gelling under the triggering of body fluid or blood, has excellent wet tissue adhesion performance, is high in water absorption speed and good in hemostatic effect, is not influenced by a normal blood coagulation mechanism in a hemostatic process, and has good postoperative anti-adhesion performance; no chemical cross-linking agent is used in the preparation process of the chitosan-based in-situ self-gel powder, the chitosan-based in-situ self-gel powder has good biocompatibility and biodegradability, raw materials are easy to obtain, synthesis is simple, and the chitosan-based in-situ self-gel powder is economical and safe.

To provide a stable composition capable of providing good spreadability during application and smoothness after application.SOLUTION: A composition comprising: (a) at least one polyglutamic acid or salt thereof; (b) at least one neutralized poly (meth) acrylic acid polymer; and (c) at least one hydrophobic inorganic filler.SELECTED DRAWING: None