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4944 results about "Methacrylate" patented technology

Methacrylate refers to derivatives of methacrylic acid. These derivatives include the parent acid (CH₂C(CH₃)CO₂H), salts (e.g., CH₂C(CH₃)CO⁻₂Na⁺), esters (e.g. CH₂C(CH₃)CO₂CH₃, or methyl methacrylate) and the polymers of these species.

Gel polymer electrolyte and preparation method and application thereof

The invention belongs to the technical field of battery electrolytes, and particularly relates to a gel polymer electrolyte as well as a preparation method and application thereof. The gel polymer electrolyte is prepared through in-situ polymerization, and the electrolyte is composed of a monomer, a cross-linking agent, an initiator, an organic solvent and a lithium salt. The monomer is selected from fluorine-containing monomers such as trifluoroethyl acrylate, 2, 2, 3, 3-tetrafluoropropyl methacrylate and the like, and the cross-linking agent is selected from NH-containing cross-linking agents such as N, N '-methylene bisacrylamide, hexamethylene bisacrylamide and the like, so that a polymer side chain fluorine-containing functional group is formed in situ and interacts with lithium ions, and lithium ion transmission is promoted; and the NH functional group on the main chain limits the migration of anions, so that the ion migration number is increased. Therefore, the copolymerized fluorine-containing monomer and nitrogen-containing cross-linking agent gel polymer electrolyte enables the battery to show good specific discharge capacity and cycling stability under high current density.
Owner:HEYUAN LICHUANG (SUZHOU) NEW ENERGY TECH CO LTD

Temperature-resistant and salt-resistant cross-linking tackifying filtrate reducer for soilless phase water-based drilling fluid as well as preparation method and application of temperature-resistant and salt-resistant cross-linking tackifying filtrate reducer

ActiveCN119638904AHigh temperature resistanceGood filter loss reduction effectDrilling compositionMethacrylateAdhesive
The invention provides a temperature-resistant and salt-resistant cross-linking tackifying filtrate reducer for a soil-phase-free water-based drilling fluid as well as a preparation method and application of the temperature-resistant and salt-resistant cross-linking tackifying filtrate reducer, and belongs to the technical field of drilling. The temperature-resistant and salt-resistant cross-linking tackifying filtrate reducer for the soilless phase water-based drilling fluid comprises the following raw materials in parts by weight: N, N-dimethylformamide, a cross-linking agent and a cross-linking agent, the invention relates to a water-based adhesive which is prepared from the following components in parts by weight: 15 to 25 parts of N, N-dimethylacrylamide, 1 to 10 parts of 3-[(3-methacrylamidopropyl) dimethylammonium] propane-1-sulfonate, 1 to 10 parts of long-chain alkyl polyoxyethylene ether methacrylate, 0.005 to 0.015 part of macromolecular cross-linking agent, 0.03 to 0.08 part of initiator A and 80 to 100 parts of deionized water. The tackifying filtrate reducer can resist the temperature of 180 DEG C, can resist NaCl to be saturated, has excellent tackifying, shear-improving and filtrate-reducing effects under high-temperature and high-salt conditions, improves the rheological property and the filtrate-reducing property of drilling fluid, and ensures safe and efficient drilling of a deep well.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Three-dimensional network polymer gel electrolyte, positive plate and solid-state lithium battery

The invention provides a three-dimensional network polymer gel electrolyte, a positive plate and a solid-state lithium battery. The three-dimensional network polymer gel electrolyte comprises 80-98% of an organic solvent, 5-15% of a lithium salt, 2-8% of lignosulfonate, 2-10% of a polymeric monomer and 2-8% of an ionic liquid, and the polymeric monomer is selected from acrylamide, polyethylene glycol dimethacrylate, 3-(methacryloyloxy) propyl trimethoxy silane or tetrahydrofurfuryl acrylate and the like. Under ultraviolet light, lignosulfonate can spontaneously generate quinonyl photochemical free radicals and hydroxyl photochemical free radicals in a mixed solution of ionic liquid and specific polymer monomers, and under the action of the photochemical free radicals, the lignosulfonate reacts with unsaturated double bonds on a polymer through phenolic groups, so that the photochemical free radicals are formed. The gel electrolyte with a three-dimensional network structure is formed, the mechanical strength can be improved, the growth of lithium dendrites in a lithium metal battery can be inhibited, and the metal lithium battery containing the gel electrolyte has excellent cycle life and safety performance.
Owner:HUNAN LIFANG NEW ENERGY SCI & TECH

Active energy ray-curable composition, cured coating and laminated film

To provide an active energy ray-curable composition capable of forming a cured coating that offers low viscosity and high hardness, and excels in adhesion and curling resistance; a cured coating; and a laminated film.SOLUTION: An active energy ray-curable composition comprises the following components (A) and (B). The component (A) is 40 mass%-89 mass% and the component (B) is 10 mass%-60 mass%. The organic solvent content is 5 mass% or less. The component (A): a polyfunctional (meth)acrylate with a viscosity at 25°C of 100 mPa s or less (excluding the component (B)). The component (B): a bifunctional monomer with a viscosity at 25°C of 10 mPa s or less, incorporating a reactive site represented by the formula below.SELECTED DRAWING: None
Owner:DIC CORP

Long-acting, stable, flexible, impact-resistant and resistance-reducing protective film and preparation process thereof

The invention relates to the technical field of polyurethane films, in particular to a long-acting, stable, flexible, impact-resistant and resistance-reducing protective film and a preparation process thereof. According to the invention, the raw materials such as polyethylene glycol, a modified fluorosilicone monomer, isophorone diisocyanate, hydroxyethyl acrylate, an acrylic antifouling monomer, dodecafluoroheptyl methacrylate and the like are added to prepare the anti-drag coating. Mixing a polyurethane thermoplastic elastomer, aminopropyl polydimethylsiloxane, an antioxidant and an ultraviolet light absorber, and carrying out melt extrusion and blow molding to form a film, so as to obtain a flexible impact-resistant base film; and uniformly coating the surface of the flexible anti-impact base film with the anti-drag coating, and carrying out ultraviolet curing to obtain a finished product. The finished product prepared by the invention has good impact resistance, and can effectively reduce frictional resistance, so that the finished product has wide application prospects in the technical field of polyurethane films.
Owner:FEILINKE NEW MATERIALS (NANTONG) CO LTD +1

Lithium battery polymer solid electrolyte membrane capable of rapidly polymerizing at room temperature as well as preparation method and application of lithium battery polymer solid electrolyte membrane

The invention discloses a lithium battery polymer solid electrolyte membrane capable of rapidly polymerizing at room temperature as well as a preparation method and application thereof, and belongs to the field of polymer electrolyte. The preparation method of the lithium battery polymer solid electrolyte membrane provided by the invention comprises the following steps: uniformly mixing polyethylene glycol methyl ether methacrylate and acrylonitrile according to a preset proportion to obtain a blended solution; sequentially adding lithium bis (trifluoromethanesulfonimide), divinylbenzene and benzoin diethyl ether into the blended solution, and uniformly mixing to obtain a precursor solution; and coating the precursor solution, and carrying out ultraviolet curing to obtain the lithium battery polymer solid electrolyte membrane. According to the lithium battery polymer solid electrolyte membrane provided by the invention, the voltage withstanding characteristic and the high ion conduction performance of the polymer electrolyte can be simultaneously improved, and the lithium battery polymer solid electrolyte membrane has a great gain on battery circulation and stability.
Owner:XIAN THERMAL POWER RES INST CO LTD +1

Fluorosilicone-modified low-surface-energy antifouling coating and preparation method therefor

Disclosed in the present invention are a fluorosilicone-modified low-surface-energy antifouling coating and a preparation method therefor. The coating comprises the following components in parts by weight: 11-15 parts of butyl acrylate, 3-4 parts of dodecafluoroheptyl methacrylate, 3-4 parts of vinyl-terminated polydimethylsiloxane, 3-4 parts of 2-hydroxy-4-acryloyloxybenzophenone, 30-38 parts of methyl isobutyl ketone, 0.15-0.25 parts of azobisisobutyronitrile, 0.1-0.2 parts of sodium hydroxide, 2-3 parts of modified titanium dioxide nanoparticles, and 0.5-1.5 parts of 3-aminopropyltriethoxysilane. In the present invention, vinylpentamethyldisiloxane reacts with decamethylcyclopentasiloxane to prepare vinyl-terminated polydimethylsiloxane; a titanium dioxide precursor is mixed with polydopamine nanoparticles for modification to prepare modified titanium dioxide nanoparticles; and then the components above are mixed to prepare the fluorosilicone-modified low-surface-energy antifouling coating. The coating has low surface energy and good adhesion and ultraviolet resistance.
Owner:CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +1

High-stability ceramic ink and preparation method thereof

The invention provides high-stability ceramic ink and a preparation method thereof. The high-stability ceramic ink is prepared from the following components in parts by mass: 30 parts of inorganic pigment, 2 to 8 parts of sulfonic block polymer, 1 to 3 parts of polyvinyl alcohol grafted glycidyl methacrylate and 50 to 70 parts of organic solvent, wherein the polyving akohol grafted glycidyl methacrylate contains a plurality of epoxy groups. According to the high-stability ceramic ink, by constructing a composite system containing a sulfonic block polymer dispersing agent and polyvinyl alcohol grafted glycidyl methacrylate, stable dispersion of an inorganic pigment, construction of a thermal anchoring structure of an ink-jet pattern area and optimization of glaze layer fusion compatibility are realized; the high-stability ceramic ink effectively solves the problems of fuzzy pattern boundary and glaze-ink separation in the high-temperature sintering process of the existing ceramic ink, so that the high-stability ceramic ink has good storage stability and glaze-ink separation resistance.
Owner:NGY COLOUR WUHAN

Dual-curing 3D printing resin and application method thereof

The invention discloses a dual-curing 3D printing resin, the dual-curing 3D printing resin comprises an acrylate oligomer containing a dynamic covalent bond and a blocked isocyanate cross-linking agent, and the acrylate oligomer containing the dynamic covalent bond is obtained by reacting an isocyanate-terminated oligomer with acetoacetic acid ethylene glycol methacrylate. The internal molecular structure and the crosslinking density of the dual-curing 3D printing resin can be changed through heat treatment after light curing, and the dual-curing 3D printing resin has excellent stability and can be stored and used in a single-component mode.
Owner:ZJU HANGZHOU GLOBAL SCI & TECH INNOVATION CENT

Temperature / CO2 dual-response zwitterionic hydrogel profile control agent and preparation method thereof

The invention discloses a temperature / CO2 dual-response zwitterionic hydrogel profile control agent, which is prepared by taking a monomer A, a monomer B and a monomer C as raw materials, adding a cross-linking agent and an initiator, and carrying out polymerization reaction in a water medium. The monomer A is selected from any one of acrylamide, acrylic acid and 1-vinyl-2-pyrrolidone; the monomer B is selected from any one of [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide, 2-methacryloyloxyethyl phosphorylcholine and 3-((2-(methacryloyloxy) ethyl) dimethylamino) propionic acid inner salt; and the monomer C is selected from any one of 2-(dimethylamino) ethyl methacrylate, dimethylamino propyl methacrylamide and polyethyleneimine. The profile control agent has double swelling mechanisms, has outstanding temperature and salt resistance, resists 220000 mg / L of mineralization water, is suitable for high-salt reservoirs, and is good in long-term aging property.
Owner:SOUTHWEST PETROLEUM UNIV

Gel with three-dimensional network structure, preparation method of gel and lithium battery

The invention provides gel with a three-dimensional network structure, a preparation method of the gel and a lithium battery, and belongs to the technical field of lithium batteries. The gel provided by the invention comprises the following raw materials: polyethylene glycol dimethacrylate (PEGDMA) and / or a derivative thereof, a fluorine-containing carbonate compound, a cross-linking agent, a lithium salt, a flame retardant and an organic solvent. The PEGDMA and / or the derivative thereof and the fluorine-containing carbonic ester compound generate a three-dimensional network structure under the action of the cross-linking agent, the fluorine-containing carbonic ester compound can improve the interface stability between the gel and the electrode material, reduce the interface side reaction and improve the thermal stability of the gel, and the performance of the electrode material is improved. Meanwhile, the three-dimensional network structure has relatively high porosity and liquid absorption capacity, so that an ion transmission channel is improved, and the ionic conductivity of the gel is further improved. The room-temperature ionic conductivity of the gel with the three-dimensional network structure is larger than or equal to 3 mS / cm, and the thermal decomposition initial temperature is larger than or equal to 250 DEG C.
Owner:SHENZHEN HONGFUTAI TECHNOLOGY CO LTD

High-strength silk fibroin / hydroxyapatite bone repair material and preparation method thereof

The invention discloses a high-strength silk fibroin / hydroxyapatite bone repair material and a preparation method thereof, and belongs to the field of biomedical materials. Methacrylic acid esterified silk fibroin and methacrylic acid esterified nano-hydroxyapatite are used as organic matter and inorganic filler, and the interface bonding capacity and dispersion stability between the organic component silk fibroin and the inorganic component hydroxyapatite are improved through photo-crosslinking; and performing high-temperature hot-pressing molding to obtain the silk fibroin / hydroxyapatite bone repair material. The bone repair material has relatively strong mechanical properties, osteogenesis induction capability, good biocompatibility and degradability, and has a wide application prospect in the field of bone defect repair.
Owner:FUZHOU UNIV

Preparation method of modified polycarboxylate surfactant and application of modified polycarboxylate surfactant in pesticide preparation

The invention relates to the technical field of surfactants, and discloses a preparation method of a modified polycarboxylate surfactant and application of the modified polycarboxylate surfactant in pesticide preparations. 3-hexene-1, 6-diamine and epoxy chloropropane are used as raw materials, 1, 6-tetraglycidylamine-3-hexene is obtained through ring-opening and ring-closing reactions, 1, 6-tetraglycidylamine-3-hexene is utilized twice, and the yield of the 1, 6-tetraglycidylamine-3-hexene is increased. The preparation method comprises the following steps: sequentially reacting 2, 3, 4, 6-tetraglycidylamine-3-hexene with sodium hydrogen sulfite and phosphoric acid to obtain tetrasulfonate hexene and tetraphosphate hexene, and copolymerizing the tetrasulfonate hexene and the tetraphosphate hexene with acrylic acid and methacrylate to obtain the modified polycarboxylate surfactant. The modified polycarboxylate surfactant prepared by the preparation method disclosed by the invention has excellent dispersing performance, heat storage stability and relatively high suspension rate.
Owner:BENGBU GERUN BIOTECHNOLOGY CO LTD

Carbon fiber reinforced polyamide composition as well as preparation method and application thereof

PendingCN120137396AMethacrylatePolymer science
The invention discloses a carbon fiber reinforced polyamide composition as well as a preparation method and application thereof. The carbon fiber reinforced polyamide composition comprises the following components in parts by weight: 25-60 parts of polyamide resin; 30 to 65 parts of carbon fiber; 2-8 parts of a toughening agent; 0.5 to 6 parts of compatilizer; wherein the compatilizer is ethylene-acrylic ester grafted methacrylic ester glycidyl ester. Ethylene-acrylate grafted glycidyl methacrylate is added into the carbon fiber reinforced polyamide composition to serve as a compatilizer, ethylene-acrylate and carbon fibers have good compatibility, and GMA and polyamide resin end group reaction have good compatibility. And the toughening agent is cooperated, so that the prepared material has relatively good mechanical properties and good appearance.
Owner:GUANGDONG KINGFA COMPOSITE MATERIALS CO LTD

Boiler water energy-saving and emission-reducing medicament

The invention discloses a boiler water energy-saving and emission-reducing agent, and relates to the technical field of boiler energy conservation, and the boiler water energy-saving and emission-reducing agent is prepared from the following components: 1, 3-bis ((trihydroxymethyl) methylamino) propane, sodium lignin sulfonate, caffeine, (3, 6-diamino-9-acridinyl) boric acid, a functional copolymer, sodium glycyrrhizinate, hydroxypropyl beta-cyclodextrin and deionized water. The functional copolymer comprises a structural unit introduced by the following monomers: N-acryloyl morpholine, 3-[N, N-dimethyl-[2-(2-methylpropyl-2-enoyloxy) ethyl] ammonium] propane-1-sulfonic acid inner salt, N-trihydroxymethyl methacrylamide, and 2-[3-(2H-benzotriazole-2-yl)-4-hydroxyphenyl] ethyl 2-methacrylate. The agent has remarkable scale and corrosion inhibition effects, is safe and environment-friendly to use, and has good energy-saving and emission-reducing effects.
Owner:JILIN BOYEI ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD

Temperature-sensitive nano material, preparation method thereof, oil-displacing agent and application of oil-displacing agent

The invention provides a temperature-sensitive nano-material and a preparation method thereof as well as an oil-displacing agent and application thereof, the temperature-sensitive nano-fluid comprises nano-silica and a polymer grafted on the surface of the nano-silica, and the polymer is formed by polymerizing a temperature-sensitive monomer and a vinyl hydrophilic monomer, the temperature-sensitive type monomer comprises isopropyl acrylamide and / or dimethylamino ethyl methacrylate. The temperature-sensitive nano material has excellent dispersity, thermal stability and temperature response characteristics, has good adaptability at the environment temperature of the low-permeability oil reservoir, and can improve the recovery rate of the low-permeability oil reservoir.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Multi-effect-in-one functional lipstick with functions of tightening, resisting wrinkles and relieving and preparation method of multi-effect-in-one functional lipstick

The invention provides a tightening, anti-wrinkle and soothing multi-effect integrated functional lipstick. The tightening, anti-wrinkle and soothing multi-effect integrated functional lipstick is prepared from the following components in percentage by mass: 10 to 30 percent of modified polydimethylsiloxane, 0.1 to 2 percent of modified silicon dioxide, 1 to 10 percent of pentaerythritol tetraisostearate, 10 to 35 percent of an emollient, 0.01 to 20 percent of a skin conditioner and 0.1 to 50 percent of an auxiliary agent, wherein the modified polydimethylsiloxane is obtained by copolymerizing hexadecyl methacrylate, vinyl-terminated polydimethylsiloxane and methylacryloylated sodium alginate, and the modified polydimethylsiloxane and the methylacryloylated sodium alginate are co-polymerized; the modified silicon dioxide is obtained by reacting hydroxylated silicon dioxide with alkyl acid. According to the invention, ester groups, alkyl chain segments and the like are introduced into the modified polydimethylsiloxane, so that the modified polydimethylsiloxane has good compatibility with other components, the dispersity and stability of active components can be effectively enhanced, and the effects of tightening, resisting wrinkles, relieving and the like of the modified polydimethylsiloxane are improved.
Owner:GUANGZHOU PINHE COSMETICS CO LTD

Particle temporary plugging agent and preparation method thereof

The invention discloses a granular temporary plugging agent and a preparation method thereof. The granular temporary plugging agent comprises the following components in percentage by mass: 17-23% of acrylamide; 1-2% of a comonomer; 0.2 to 0.27% of a first cross-linking agent; 5-10% of polyvinyl alcohol; 1-2% of a second cross-linking agent; 0.06 to 0.12% of an initiator; 0.01%-0.02% of an initiating auxiliary agent; 3-6% of a modified nano blending material; 0.3%-0.6% of a dispersing agent; and the balance of distilled water. Wherein the first cross-linking agent is one or more of ethylene glycol dimethacrylate, polyethylene glycol diacrylate and trimethylolpropane trimethacrylate; the second cross-linking agent is one or two of a beta-cyclodextrin-boron complex and a glycerol-boron complex; the modified nano blending material is soda lime silicate modified by surface activation-silane coupling modification, and is in the form of hollow microspheres. The in-seam temporary plugging agent system provided by the invention is low in density, good in plugging performance and excellent in degradation performance.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Water-based paint suitable for cement floor and preparation method of water-based paint

The invention relates to the technical field of water-based paint, in particular to water-based paint suitable for cement floors and a preparation method thereof.The water-based paint is prepared from, by weight, 60-80 parts of acrylic emulsion, 3-5 parts of N-hydroxyethyl acrylamide, 2-4 parts of modified nano silicon dioxide and 0.1-0.3 part of graphene oxide. The invention relates to an anti-mildew coating, which is prepared from the following components in parts by weight: 1 to 2 parts of polyethylene glycol methyl ether methacrylate, 2 to 4 parts of 2-(dimethylamino) ethyl methacrylate, 0.2 to 0.6 part of defoaming agent, 0.5 to 1 part of flatting agent, 0.3 to 0.6 part of wetting agent, 4 to 10 parts of coalescing agent, 0.5 to 1.5 parts of thickening agent, 0.1 to 0.2 part of anti-mildew bactericide and 20 to 40 parts of filler, the adhesive force of the coating and a cement base material reaches 0 grade, and the performance is kept stable after water soaking resistance; the wear resistance is improved by more than 3 times compared with the traditional water-based paint, and meanwhile, good toughness is kept; and ideal film formation can be realized within the range of 5-40 DEG C.
Owner:ZHEJIANG XINGHUI NEW MATERIALS CO LTD

Preparation method of modified polycarboxylate surfactant and its application in pesticide preparation

The present invention relates to the technical field of surfactants, and discloses a preparation method of a modified polycarboxylate surfactant and its application in pesticide preparations. The present invention uses 3-hexene-1,6-diamine and epichlorohydrin as raw materials, and obtains 1,6-tetraglycidylamine-3-hexene through ring opening and ring closing reactions. 1,6-tetraglycidylamine-3-hexene is used twice to react with sodium bisulfite and phosphoric acid in sequence to obtain tetrasulfonate-based hexene and tetraphosphate-based hexene, and then the two are copolymerized with acrylic acid and methacrylate to obtain a modified polycarboxylate surfactant. The modified polycarboxylate surfactant prepared by the present invention has excellent dispersibility, heat storage stability and high suspension rate.
Owner:BENGBU GERUN BIOTECHNOLOGY CO LTD

Preparation process of gel polymer lithium ion battery cell electrolyte

The invention relates to a preparation technology of a gel polymer lithium ion battery cell electrolyte, and belongs to the field of battery preparation technologies, the preparation technology comprises the following steps: mixing methacrylate monomers and silane monomers according to a mass ratio of 3: 1-5: 1, adding 1-3% of an initiator, and carrying out prepolymerization at 60-80 DEG C for 1-3 h to prepare a prepolymer solution; mixing with a non-aqueous solvent containing lithium hexafluorophosphate according to a mass ratio of (1: 4)-(1: 6) to form a precursor mixed solution, and controlling the injection rate to be 1.5-2.5 g / Ah to a gap between a battery cell pole piece and a diaphragm; after standing for 2-4 hours at the vacuum degree of less than or equal to-0.08 MPa, curing for 3-6 hours at the temperature of 60-70 DEG C to form a gel polymer electrolyte; the wettability is improved through pole piece surface hydrophilic treatment, 1-5% of vinylene carbonate is added to optimize an SEI film, the prepolymerization temperature fluctuation is controlled to be smaller than or equal to + / -2 DEG C through microwave-assisted heating, the pressure of 0.2-0.5 MPa is applied after injection to promote uniform permeation, a polyvinylidene fluoride coating of 5-10 microns is coated after curing to enhance protection, and the interface performance is ensured through an alternating-current impedance test.
Owner:HUIZHOU ZHIJIAN TECH CO LTD

Antifouling and antibacterial coating material as well as preparation method and application thereof

The invention relates to the field of new materials, and discloses an antifouling and antibacterial coating material as well as a preparation method and application thereof, and the antifouling and antibacterial coating material comprises glycidyl methacrylate, a methacrylate betaine monomer and a methacrylate quaternary ammonium salt monomer. Compared with a release type antifouling and antibacterial coating, the antifouling and antibacterial coating material adopts a bionic technology, uses sulphobetaine as a functional group, is good in biocompatibility, does not contain toxic or heavy metal antibacterial agents, can ensure that the material is non-toxic for a long time, realizes eco-friendly long-acting antifouling and antibacterial effects, can be combined with a large number of water molecules, and has the advantages of being environmentally friendly and free of pollution. The coating contains quaternary ammonium salt monomers, forms a hydration layer on the surface, keeps certain biological inertness, reduces protein adsorption, contains the quaternary ammonium salt monomers, has excellent inhibition and killing effects on various bacterial infections, overcomes the problem that the coating is easy to fall off, and realizes firm bonding of the surface of the pipeline.
Owner:SHANDONG OUSEN PIPELINE TECH CO LTD +1

Double-crosslinking network hydrogel film for treating oral ulcer, preparation method and application

The invention discloses a double-crosslinking network hydrogel film for treating oral ulcer, a preparation method and application, and relates to the technical field of biomedical materials. According to the hydrogel film, a dual-network synergistic enhancement structure is constructed through covalent / non-covalent bi-crosslinking, the adhesion to oral mucosa is remarkably enhanced by adopting dopamine (DA) modified hyaluronic acid (HA), and the mechanical property is greatly improved by utilizing a bi-crosslinking network system of disulfide bond / double bond crosslinking (chitosan and CS) and hydrogen bond / catechol self-crosslinking (hyaluronic acid and HA); the antioxidant and anti-inflammatory characteristics of lipoic acid (LA) and the natural antibacterial property of chitosan (CS) are combined to play a synergistic effect, so that the antibacterial and anti-inflammatory effects are remarkably improved. Meanwhile, multifunctional modified materials such as metacrylic acid ester are introduced, so that the functionality and the application range of the hydrogel film are expanded. The preparation technology is optimized, it is ensured that the material is safe and effective, large-scale production is easy, and an efficient and reliable novel material is provided for oral ulcer treatment.
Owner:ZHEJIANG PROVINCIAL PEOPLES HOSPITAL

(Methyl) acrylate monomer as well as preparation method and application thereof

The invention relates to a (methyl) acrylate monomer as well as a preparation method and application thereof, the structural general formula of the (methyl) acrylate monomer is shown as G1, G2, G3 and G4: # imgabs0 #, and R1 is methyl or hydrogen. The whole (methyl) acrylate monomer provided by the invention is relatively small in molecular size, not easy to agglomerate, high in refractive index, liquid, low in viscosity and good in intermiscibility with other components.
Owner:ZHUHAI MOJIE TECH CO LTD

Preparation method of polydopamine modified boron carbide-zinc methacrylate coordination reinforced rubber-based radiation protection composite material and polydopamine modified boron carbide-zinc methacrylate coordination reinforced rubber-based radiation protection composite material

The invention discloses a preparation method of a polydopamine modified boron carbide-zinc methacrylate coordination reinforced rubber-based radiation protection composite material, and relates to the technical field of radiation protection materials. The method comprises the following steps: dispersing boron carbide in a triaminomethane buffer solution containing dopamine, and carrying out surface polymerization reaction to obtain polydopamine modified boron carbide; and mixing the polydopamine modified boron carbide, zinc methacrylate and a rubber matrix, and vulcanizing to obtain the polydopamine modified boron carbide-zinc methacrylate coordination enhanced (zinc is coordinated with nitrogen / oxygen and the like on the surface of the modified boron carbide) rubber-based radiation protection composite material. Through multiple effects of coordination enhancement, chemical crosslinking and the like, the material has excellent neutron shielding performance and tensile property, the preparation method is simple, the cost is low, and the material has a wide application prospect in the field of nuclear radiation protection.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Vascularized gastric cancer organ chip and preparation method thereof

The invention relates to the technical field of tumor biomedical engineering and organ chips, in particular to a vascularized gastric cancer organ chip and a preparation method thereof.The chip is composed of an integrated micro-fluidic main body, an annular micro-column array and an optical sealing film, and a central culture cavity is divided into a tumor area and a blood vessel area by micro-columns; the preparation method comprises the following steps: injecting a fibrous protein solution containing human umbilical vein endothelial cells and cancer-related fibroblasts into a vascular region, and adding thrombin for in-situ gelation to form a pre-vascularized network; the method comprises the following steps: mixing a patient-derived gastric cancer organ with a methacrylic acid esterified gelatin pre-polymerized solution, injecting the mixture into a tumor area, and carrying out photo-crosslinking immobilization; culturing for 7-14 days under the dynamic perfusion condition of a mixed culture medium to obtain a three-dimensional gastric cancer organ model containing a capillary network; the method is expected to be used for rapid, low-cost and high-throughput screening of chemotherapy or anti-angiogenesis drugs and accurate prediction of individual curative effects of patients.
Owner:THE SEVENTH AFFILIATED HOSPITAL SUN YAT SEN UNIV SHENZHEN

(Methyl) acrylate monomer as well as preparation method and application thereof

The invention relates to a (methyl) acrylate monomer as well as a preparation method and application thereof, the structural general formula of the (methyl) acrylate monomer is as follows: # imgabs0 #, n is an integer of 1-20, and R1 is methyl or hydrogen; r2 and R3 are selected from hydrogen, Br, phenyl, methyl or # imgabs 1 #, wherein A1 in the # imgabs 2 # is phenyl or methyl. According to the (methyl) acrylate monomer provided by the invention, the molecular size of the whole monomer is relatively small, the whole monomer has a plurality of branched chain structures, the carbon chain length of a main chain is controllable, and the (methyl) acrylate monomer has high refractive index and good intermiscibility with other components.
Owner:ZHUHAI MOJIE TECH CO LTD

Automobile paint surface protective film agent and preparation method thereof

The invention relates to an automobile paint surface protective film agent and a preparation method thereof, and belongs to the technical field of automobile beauty. The automobile paint surface protective film agent is prepared from the following raw materials: amino functional polysiloxane, fluorine modified acrylic resin, epoxy modified organic silicon emulsion, functional filler, a surfactant, hydrophobic modified silicone oil, a brightening agent, a penetrating agent, a cosolvent and deionized water, and the raw materials are blended to prepare the automobile paint surface protective film agent. The functional filler is prepared by firstly carrying out surface modification on a polymer and then carrying out click chemistry on dodecanethiol on hydroxylated nano silicon dioxide, and the polymer is prepared by carrying out nucleophilic addition on poly (ethylene glycol) methacrylate Mn360, poly (ethylene glycol) methacrylate Mn500 and isophorone diisocyanate. The automobile paint surface protective film agent is high in film forming speed, a formed film layer has the characteristic of multiple effects, and meanwhile, the wear resistance is also very good.
Owner:GUANGZHOU KASDER CO LTD

Impact-resistant high-toughness plastic as well as preparation method and application thereof

The invention provides impact-resistant high-toughness plastic as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. Comprising the following raw materials in parts by weight: 35-45 parts of hydroxyl-terminated hyperbranched polycarbonate, 15-25 parts of LDPE (Low-Density Polyethylene) resin, 8-12 parts of inorganic filler, 4-6 parts of isocyano ethyl methacrylate, 1-3 parts of bis (1-vinyl imidazole-2-) ketone, 1-3 parts of bis (trimethylsilylated) vinyl phosphate, 1-3 parts of 1, 3, 5-triglycidyl-S-triazinetrione, 1-3 parts of 3, 3 '-diamino-4, 4'-diphenyl-1, 3, 4-triazole-2-ketone, 1-3 parts of 1, 3, 5-triazole-2-ketone, 1-3 parts of 1, 3 '-trimethylsilylated vinyl phosphate, 1-3 parts of 2, 3'-diphenyl-1, 3, 4, 5- The material is prepared from the following components in parts by weight: 1-3 parts of 4, 4 '-difluorodiphenyl sulfone, 2-4 parts of a coupling agent, 0.5-1.5 parts of an antioxidant, 0.8-1.2 parts of a compatilizer, 0.7-1 part of a catalyst and 0.8-1 part of an initiator. The plastic has the advantages of favorable mechanical properties, favorable heat aging resistance, favorable impact toughness, favorable flame retardancy and favorable environmental friendliness.
Owner:NINGBO HONGTAI WEIYE PLASTICS CO LTD

A fast-curing acrylic adhesive and applications thereof

The application provides a kind of fast curing acrylic glue and application, the fast curing acrylic glue is prepared from the following components according to weight parts: butyl nitrile rubber of terminal methacrylate is 13-17 parts;Polyurethane acrylate is 5-8 parts;Monofunctional acrylate monomer is 14-20 parts;Two functionality acrylate monomer is 7-13 parts;Three functionality acrylate monomer is 1-3 parts;Peroxide is 0.5-1.5 parts;Polymerization inhibitor is 0.01-0.04 parts;Coupling agent is 0.5-0.7 parts.The acrylic glue provided by the application has the advantages of fast curing, low volume resistivity after adding silver powder curing, good bonding strength, moderate elastic modulus, and can be used for photovoltaic tile conductive silver glue.
Owner:HANGZHOU ZHIJIANG SILICONE CHEM +1