2070 results about "Glycerol Ethers" patented technology

The invention belongs to the technical field of recoverable epoxy resin, and relates to a degradable epoxy resin system material and application thereof, a body, a composite material and a recovery method thereof. The degradable epoxy resin system material comprises a first component and a second component, the first component comprises first epoxy resin and second epoxy resin, and the second component comprises a first curing agent, a second curing agent and an accelerant; the first epoxy resin is a mixture of one or more of glycidyl ether epoxy resin and glycidyl amine epoxy resin and accounts for 15-35% of the first component by mass, the second epoxy resin is selected from one or more of epoxy resin with the structure containing # imgabs0 #, and the second epoxy resin accounts for 60-80% of the first component by mass; the first curing agent is one or a mixture of more of alicyclic amines and accounts for 40%-60% of the second component by mass, the second curing agent is one or a mixture of more of polyether amines and accounts for 40%-60% of the second component by mass, and the accelerant accounts for 0.5%-3% of the second component by mass. The requirement for vacuum infusion of the wind power blade can be met.

The invention discloses a toughened epoxy resin and a curing method thereof, and relates to the technical field of epoxy resins, the toughened epoxy resin comprises the following components: 100 parts of an epoxy resin matrix, specifically a mixture of bisphenol A epoxy resin and alicyclic epoxy resin, 5-35 parts of a composite amine curing agent, and 5-20 parts of a nano toughening agent, in particular to core-shell rubber particles grafted with epoxy groups on the surfaces, the core layer of each core-shell rubber particle is cross-linked polybutadiene, the shell layer of each core-shell rubber particle is polymethyl methacrylate, 0.5-3 parts of an accelerant comprising a bi-component synergistic accelerant, 1-5 parts of an interface enhancer, and a mixture of gamma-glycidyl ether oxypropyl trimethoxy silane and a titanate coupling agent, a bisphenol A type epoxy resin and a specific proportion of alicyclic epoxy resin are combined to construct an epoxy resin matrix according to a mass ratio of 2: 1, the epoxy resin matrix is matched with a composite amine curing agent prepared by carrying out a special three-step reaction on long-chain polyether diamine, aromatic diamine and anhydride, and key parameters such as molecular weight, functionality and molar ratio of the components are accurately regulated and controlled.

A fireproof magnesium oxide board is prepared by mixing the following raw materials, the raw material names and weight parts are as follows: 80-100 parts of magnesium oxide; 20-30 parts of anhydrous magnesium chloride; 10-20 parts of modified expanded vermiculite foaming agent; 20-30 parts of aluminum silicate fiber; 5-10 parts of sawdust; 10-15 parts of fly ash; 8-12 parts of glass magnesium board crushed powder; 1.5-5 parts of non-woven fabric; 10-20 parts of water; wherein the modified expanded vermiculite is prepared by the following steps: (1) Vermiculite is incompletely expanded and calcined; (2) acrylic acid monomer, sodium hydroxide, acrylamide monomer, initiator potassium persulfate, crosslinking aid pentaerythritol polyglycidyl ether, incompletely expanded vermiculite, and water are taken, stirred evenly and ultrasonically dispersed to obtain a first reaction solution, which is placed in a reactor for reaction to obtain a gel material; (3) the gel material is preliminarily crushed and dried, and then further crushed in a ball mill to obtain a fire-resistant expanded vermiculite with water absorption performance.

The invention relates to the technical field of macromolecules, and discloses a preparation method of modified polyurethane toughened epoxy resin, which comprises the following steps: by taking 4-(Boc-amino) phenylboronic acid, diethanol amine, 1, 3-bis (3-glycidyl ether oxypropyl) tetramethyldisiloxane and the like as raw materials, carrying out a series of chemical reactions to obtain a borate siloxane chain extender; the method comprises the following steps: adding a polyurethane prepolymer into the epoxy resin, participating in chain extension of polyurethane, and modifying the epoxy resin by using the polyurethane prepolymer to obtain the modified polyurethane toughened epoxy resin. A'soft segment 'and an Si-O structure in the modified polyurethane can also improve the flexibility of a curing network, effectively change the fracture mechanism of the resin, absorb a large amount of energy when the resin is fractured, and contribute to improving the toughness of the epoxy resin; on the basis of ensuring the strength of the epoxy resin, the toughness and flame retardant property of the epoxy resin are improved, and the epoxy resin can be applied to the fields of composite materials, coatings, adhesives and the like with higher toughness and flame retardant requirements, and has wide applicability.

The invention relates to the field of adhesives, and particularly discloses an OCA optical adhesive for a folding screen and a preparation method of the OCA optical adhesive. The OCA optical adhesive for the folding screen is prepared from the following raw materials in parts by weight: 60 to 80 parts of urethane acrylate, 15 to 25 parts of organic silicon grafted glycidyl ether, 20 to 30 parts of a diluent, 5 to 10 parts of a photoinitiator and 1 to 2 parts of an antioxidant, the organic silicon grafted glycidyl ether is prepared by reacting vinyl siloxane, pentaerythritol triallyl ether, allyl glycidyl ether and a catalyst. The OCA optical cement for the folding screen prepared by the invention is applied to the folding screen, and can keep relatively good elasticity, bending resistance and bonding strength in the long-term repeated folding use process, and wrinkles and bubbles are not easy to appear.

The invention discloses a waterborne epoxy resin coating, a preparation method and application in bridge protection, and belongs to the technical field of coatings. The water-borne epoxy resin coating comprises the following raw material components in parts by weight: 15-25 parts of epoxy composite resin emulsion, 100 parts of emulsified asphalt, 3-5 parts of a curing agent and 6-10 parts of water, wherein the epoxy composite resin emulsion is obtained by carrying out a composite reaction on 30-60 parts by mass of epoxy resin, 2-3 parts by mass of an emulsifier, 6-9 parts by mass of an acrylate composition and 1.4-1.6 parts by mass of a co-stabilizer; the acrylate composition is prepared by prepolymerizing 15 to 16 parts by mass of butyl methacrylate, 10 to 12 parts by mass of 2-isopropenyl aniline, 5 to 7 parts by mass of allyl glycidyl ether and 1 to 1.2 parts by mass of allyl polyhedral oligomeric silsesquioxane and then combining the prepolymerized materials with 1 to 3 parts by mass of acrylic acid.

The invention relates to the technical field of petrochemical engineering, and discloses a temperature-resistant anti-swelling agent for fracturing and a preparation process thereof.The preparation method comprises the steps that glycerol triglycidyl ether and diethanol amine are subjected to a ring-opening reaction, a polyhydroxy tertiary amine monomer is obtained, then the polyhydroxy tertiary amine monomer and chloromethylated polystyrene are subjected to a quaternization reaction, and the temperature-resistant anti-swelling agent for fracturing is obtained. Quaternary ammonium salt groups of the anti-swelling agent and negative charges on the surface of clay form electrostatic interaction, and hydroxyl groups and the surface of the clay form hydrogen-bond interaction, so that the anti-swelling agent can be firmly adsorbed on the surface of the clay to form a layer of polymer film, the clay is prevented from being in contact with water, the phenomenon that the clay swells when encountering water is effectively inhibited, and the anti-swelling rate is very high. And the anti-swelling agent contains a heat-resistant polystyrene molecular chain, has excellent high temperature resistance, can maintain good structural stability at high temperature, still maintains high anti-swelling rate, and is suitable for a fracturing fluid system for high-temperature oil reservoir exploitation.

The invention relates to the field of cutting fluids, and discloses a high-hardness brittle semiconductor anti-deterioration cutting fluid and a production process thereof, the cutting fluid comprises the following components by weight: 15-25 parts of a lubricant, 10-20 parts of an anti-wear modifier, 1-5 parts of organic acid, 5-15 parts of organic amine, 1-3 parts of a lubricating antibacterial additive, 0.1-0.3 part of a bactericide, 0.5-2 parts of a wetting agent, 0.1-0.5 part of an antifoaming agent, and 25-35 parts of deionized water; the anti-wear modifier is prepared by taking aminated nano hexagonal boron nitride as a carrier to grow silicon dioxide nanoparticles in situ and carrying out composite hybridization on the silicon dioxide nanoparticles and binary acid ionic liquid, and the binary acid ionic liquid is prepared from 2-(1, 3-benzothiazole-2-sulfenyl) succinic acid and choline hydroxide; the lubricating antibacterial additive is prepared from aminated nano hexagonal boron nitride, chitosan and ethylene glycol diglycidyl ether, and by adding the anti-wear modifier and the lubricating antibacterial additive, the cutting fluid is endowed with excellent lubricating wear resistance, antibacterial property and anti-rust performance.

To provide an oil-in-water type pest insect repellent composition that delivers a pleasant sensation upon application to the skin, offers excellent stability during long-term storage, and sustainedly exhibits excellent repellency against pests, particularly flying pests.SOLUTION: The present invention relates to an oil-in-water type pest insect repellent composition that contains components (A) to (E). (A) 13-50 mass% of at least one non-volatile liquid oily component selected from silicone oils, ester oils, ether oils, hydrocarbon oils, aliphatic alcohols and polyhydric alcohols; (B) 0.5-35 mass% of hydrophilic inorganic particles which have a volume-based median particle diameter of 1-40 μm and include silica particles and / or silicate mineral particles; (C) 0.1-3 mass% of one or more selected from polyether-modified silicones, polyglycerin-modified silicones, branched polyglycerol-modified silicones, alkyl glyceryl ether-modified silicones and carboxyl-modified silicones, which are liquid at 25°C; (D) 0.05-3 mass% of a thickening agent; and (E) 30-86.35 mass% of water. The viscosity of component (A) at 23°C, as measured using a B type rotary viscometer, is 1-400 mPa s. The silicone oil for component (A) does not include component (C).SELECTED DRAWING: None

The invention relates to the technical field of concrete, in particular to epoxy resin concrete for a catch basin and a preparation process thereof. The cement, the silica fume, the fine aggregate, the coarse aggregate, the water reducing agent, the fly ash, the modified epoxy resin, the curing agent, the diluent and the water are mixed to obtain epoxy concrete slurry, and the epoxy concrete with good mechanical property and ageing resistance for the catch basin is obtained through curing. A preparation process of the modified epoxy resin comprises the following steps: (1) preparing eugenol glycidyl ether by taking eugenol and epoxy chloropropane as raw materials; (2) enabling eugenol glycidyl ether to react with 1, 1, 3, 3-tetramethyldisiloxane, and then grafting 4-isopropylamino diphenylamine, so as to obtain silicon-containing dihydric alcohol; (3) mixing silicon-containing dihydric alcohol and polyethylene glycol, and reacting with isophorone diisocyanate to obtain a silicon-containing polyurethane prepolymer; and (4) mixing the silicon-containing polyurethane prepolymer with epoxy resin to obtain the modified epoxy resin.

The invention discloses a flexible PI heat-conducting insulating film pad and a preparation method thereof, and relates to the field of film pads. The preparation method comprises the following steps: preparing Fe3O4 magnetic heat-conducting core and SiO2 insulating shell composite nanoparticles by a sol-gel method, treating and grafting epoxy groups by a silane coupling agent, performing ring-opening addition with one end amino group of amino-terminated polydimethylsiloxane, and reacting the other end amino group with polyethylene glycol diglycidyl ether, so that two flexible long chains are grafted on SiO2. Due to the modified composite nanoparticles and the flexible long-chain structure, the flexibility of the film pad is remarkably improved; thermal vibration of silicon-oxygen bonds and ether bonds promotes heat transfer, a hydrogen bond network is formed with a PI substrate to improve dispersion stability, particles are orderly arranged under the action of a high-frequency magnetic field to construct a three-dimensional heat conduction network, and heat conduction efficiency is enhanced; the SiO2 isolates the inner core from conducting and improves the insulating property of the film pad by virtue of good insulativity and no free charge in the flexible long-chain polymer. The flexible PI heat-conducting insulating film pad prepared by the invention has the effects of flexibility, heat conduction and insulation.

The invention discloses an anti-scale cross-linked polymer fracturing fluid and a preparation method thereof, and relates to the technical field of petroleum fracturing fluids. When the anti-scale cross-linked polymer fracturing fluid is prepared, allylamine hydrochloride and epoxy chloropropane react to prepare a double-bond chlorinated intermediate; reacting the double-bond chlorinated intermediate with lauramidopropyl dimethylamine to prepare a cationic monomer; copolymerizing a cationic monomer and acrylamide to prepare a cationic polymer; the preparation method comprises the following steps: reacting L-lysine with formaldehyde and phosphorous acid to prepare phosphoric acid modified lysine; reacting the phosphoric acid modified lysine with allyl glycidyl ether to prepare a phosphoric acid modified monomer; acrylamide and an anionic monomer are copolymerized to prepare an anionic polymer; the anionic polymer and the cationic polymer are dissolved in water to prepare the anti-scale cross-linked polymer fracturing fluid. The anti-scale cross-linked polymer fracturing fluid prepared by the invention has the advantages of scale prevention, good temperature resistance, good shear resistance and self-crosslinking.

The invention relates to the technical field of plugging agents, and discloses a viscoelastic polymer type self-assembly plugging agent and a preparation method thereof. The preparation method comprises the following steps: adding acrylamide, butyl acrylate, 2-acrylamide-2-methylpropanesulfonic acid, quaternized cyclodextrin, gamma-glycidyl ether oxypropyl trimethoxy silane modified bentonite, Schiff base styrene, a sodium dodecyl benzene sulfonate emulsifier and octadecyl dimethyl allyl ammonium chloride into a reaction kettle; and adding an azodiisobutyronitrile initiator into the deionized water, uniformly mixing, and reacting for 4-5 hours at 50-65 DEG C to obtain the viscoelastic polymer type self-assembled plugging agent after the reaction is finished. The plugging agent disclosed by the invention has a relatively good plugging effect, and effectively solves the problem that the gel strength is weakened or the gelling is not thorough due to the formation shearing effect in a continuous gel migration process.

The invention belongs to the field of metal coating preparation, and particularly relates to a thick coating suitable for a silicon steel surface layer and a preparation method thereof. Graphene is modified by polyethylene glycol diglycidyl ether (PEGDGE), and silver nanoparticles are combined, so that the high-conductivity antibacterial composite material is prepared. An auxiliary agent solution is rapidly synthesized by a microwave ultrasonic technology, so that the hardness and wear resistance of the coating are enhanced. And an anti-ultraviolet and chemical-corrosion-resistant additive is added into the coating, so that the durability and the service life of the coating are improved. A spraying method is adopted for uniform coating, and high-temperature curing ensures that the coating is stable. The whole process is optimized, the conductivity, the antibacterial property, the ultraviolet resistance, the chemical corrosion resistance, the hardness, the wear resistance and the like of the coating are remarkably improved, and the high-performance coating is prepared.

The invention relates to a degradable epoxy resin composite material with an adjustable curing speed, and a preparation method and a mild total recycling method thereof. Existing degradable epoxy resin has the problems of high cost, harsh degradation conditions and the like, and is difficult to meet the requirements of different application scenes on curing speed and temperature at the same time. The invention provides an epoxy resin composite material which comprises curing agent components (an epoxy resin amine curing agent and an ester-containing polythiol curing agent) and epoxy resin components (glycidyl ether epoxy resin, glycidyl amine epoxy resin and glycidyl ester epoxy resin). The cured composite material can be fully recycled through catalytic degradation under mild conditions by using a lewis acid and an amino group breaking ester bond mechanism, and the degradation product can be directly used as a curing agent, a toughening agent and a chain extender. The epoxy resin composite material disclosed by the invention not only has adjustable curing speed and high use performance, but also realizes environmental friendliness and resource recycling, and provides a new solution for sustainable development of epoxy resin.

The invention belongs to the technical field of high polymer chemical materials, and particularly relates to a self-repairing composite waterproof board and a preparation method thereof. The invention relates to a high-temperature-resistant graphene coating which is prepared from the following raw materials: bisphenol A diglycidyl ether, fluorosilane modified nano SiO2, graphene slurry, polydimethylsiloxane, epoxy-terminated polydimethylsiloxane, a urea-formaldehyde prepolymer, a silane coupling agent, sodium dodecyl benzene sulfonate, an FSO-100 fluorocarbon surfactant, a CTBN adhesive, a curing agent, an epoxy accelerator DMP-30 and a diluent. Through the collaborative design of the gradient structure of the hard framework and the soft coating, low-surface-energy filler chemical anchoring, microcapsule local material supplementing and thermal triggering dynamic bond rearrangement, the board obtains balance among the bearing strength, long-term hydrophobicity, weather-proof barrier and repeatable thermal self-repairing; and meanwhile, the common defects that room-temperature self-repairing is difficult to realize, hydrophobic particles are easy to agglomerate, a coating is easy to layer and the like are avoided.

The invention provides a polyether ester defoaming agent and a preparation method thereof. Firstly, glycidyl ether and short-chain alcohol react to prepare polyether, and finally, fatty acid is used for blocking to prepare polyether ester 1 #; glycidyl ether, polyethylene glycol and / or polypropylene glycol react to prepare polyether, and finally fatty acid is used for blocking to prepare polyether ester 2 #; glycidol ether, short-chain alcohol, polyethylene glycol and / or polypropylene glycol react to prepare polyether, unsaturated fatty acid continues to be used for blocking to obtain polyether ester, the polyether ester and hydrogen-containing silicone oil continue to react to obtain branched silicon polyether 3 #, and the two polyether esters and the branched silicon polyether are compounded and cooperated to form the final polyether ester defoaming agent. The polyether ester 1 #, the polyether ester 2 # and the branched silicon polyether 3 # all have hyperbranched structures, the polyether ester 1 # improves the dispersing performance and the instant defoaming performance of the defoaming agent, the polyether ester 2 # and the branched silicon polyether 3 # improve the foam inhibition performance of the defoaming agent, and the three substances are compounded to form the stable polyether ester defoaming agent with both defoaming and foam inhibition performance.

The invention relates to the technical field of electric wire materials, in particular to a preparation process of a high-strength halogen-free flame-retardant electric wire. According to the preparation method, the polyolefin flame-retardant microspheres are obtained by adding propenylated cyclotriphosphazene, propenylated phosphaphenanthrene, methyl methacrylate, lauroyl peroxide, polyvinyl alcohol and deionized water. The flame-retardant modified boron nitride nanosheet is prepared by the following steps: firstly, preparing a flame-retardant modified boron nitride nanosheet, and then adding hydroxylated boron nitride, gamma-glycidyl ether oxypropyl trimethoxy silane and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, so as to obtain the flame-retardant modified boron nitride nanosheet. An ethylene-vinyl acetate copolymer, polyolefin flame-retardant microspheres, flame-retardant modified boron nitride nanosheets, an antioxidant and a lubricant are mixed and react, and the high-strength halogen-free flame-retardant protective sleeve is obtained. And wrapping the periphery of the copper core wire with the high-strength halogen-free flame-retardant protective sleeve to obtain a finished product. The finished product prepared by the invention has excellent flame retardant property and high strength, thereby having a wide application prospect in the technical field of electric wire materials.

The invention discloses a method for recovering bisphenol A and cyclic carbonate by coupling polycarbonate with an epoxy compound, and belongs to the technical field of depolymerization and recovery of high polymer materials. The method comprises the following steps: constructing a reaction system comprising bisphenol A polycarbonate, an epoxy compound, Lewis acid, alkali and ionic liquid; placing the reaction system at the temperature of 70-150 DEG C in an air atmosphere, and carrying out a reaction for more than or equal to 10 min to obtain bisphenol A and cyclic carbonate; wherein the epoxy compound comprises at least one of styrene oxide, 1, 2-epoxypropane, 1, 2-epoxybutane, 1, 2-epoxydodecane, n-butyl glycidyl ether, epoxy propyl phenyl ether, 2-toluene glycidyl ether and 3-(1-naphthyloxy)-1, 2-epoxypropane, and the epoxy compound comprises at least one of styrene oxide, 1, 2-epoxypropane, 1, 2-epoxybutane, 1, 2-epoxydodecane, n-butyl glycidyl ether, epoxy propyl phenyl ether, 2-toluene glycidyl ether and 3-(1-naphthyloxy)-1, 2-epoxypropane; the alkali is inorganic alkali or organic alkali; the method is mild in reaction condition, high in resource utilization efficiency, good in operation safety and high in chemical monomer yield, and has a wide application prospect in the field of waste plastic treatment.

The present invention relates to a coating composition for forming a UV light conversion coating for a photovoltaic cell, a UV light conversion coating prepared using the same, a method for preparing the UV light conversion coating, and a photovoltaic cell and a photovoltaic module comprising the coating. The composition comprises the following components in parts by mass: (A) 100 parts of first epoxy resin which is in a liquid state at room temperature, wherein each molecule of the first epoxy resin contains at least two glycidyl ether groups on average; (B) 33-66 parts of a second epoxy resin in a liquid state at room temperature, wherein the second epoxy resin is an alicyclic epoxy resin of which each molecule contains at least two epoxy cycloalkyl groups on average; (C) 33-66 parts of vinyl ether monomer in a liquid state at room temperature; (D) 6-16 parts of a cationic initiator; (E) 3-15 parts of a UV light conversion agent; and (F) 0-200 parts of an inert diluent. When the light conversion coating prepared from the coating composition is used in a photovoltaic cell or a photovoltaic module, the light transmittance of a UV wave band can be reduced, the visible light wavelength transmittance can be improved, the light conversion efficiency can be improved, and the light conversion coating has excellent adhesive force and ageing resistance.

The invention relates to the technical field of lithium battery diaphragms, and discloses a water-soluble gel electrolyte, a preparation method thereof, water-based slurry and application. The preparation method of the water-soluble gel electrolyte comprises the following steps: in the presence of an initiator, carrying out first polymerization reaction on methyl methacrylate and N-isopropylacrylamide to obtain an intermediate I; carrying out second polymerization reaction on the polymer solution A and the polymer solution B to obtain an intermediate I; the polymer solution A contains an intermediate I with the concentration of 8-12wt%; the polymer solution B contains neopentyl glycol diglycidyl ether with the concentration of 0.5 to 1.2 weight percent; and carrying out heating treatment on the intermediate I to obtain the water-soluble gel electrolyte. When the water-soluble gel electrolyte is applied to the battery diaphragm, the addition amount of the electrolyte can be reduced during electrolyte injection in a battery cell, and the cost is effectively reduced; battery leakage is reduced, and the safety performance of the battery cell is improved; and the internal resistance can be reduced, and the cycle performance of the battery cell can be improved.

The invention provides a modified amine curing agent, a preparation method, epoxy resin anticorrosive paint and application, and belongs to the technical field of paint. The modified amine curing agent provided by the invention is prepared from preparation raw materials including alicyclic diamine, m-xylylenediamine, a first glycidyl ether reagent, a second glycidyl ether reagent and a glycidyl ester reagent through amination reaction, the alicyclic diamine contains at least one primary amine group; the first glycidyl ether reagent is ethylene glycol diglycidyl ether and / or bisphenol A type diglycidyl ether; and the second glycidyl ether reagent is 1, 4-butanediol diglycidyl ether and / or C12-14 glycidyl ether. The modified amine curing agent is combined with the curing characteristics of amide and phenolic aldehyde amine, the epoxy resin anticorrosive paint prepared from the modified amine curing agent has a proper curing speed, the adhesive force of a cured coating is high, the anticorrosive effect is good, and the epoxy resin anticorrosive paint is particularly suitable for a high-humidity environment and an underwater environment.

The invention relates to the field of coatings, in particular to a solvent-free epoxy coating and a preparation method thereof.The solvent-free epoxy coating comprises a component A and a component B; the component A comprises 40-60 parts of epoxy resin, 5-20 parts of a reactive diluent, 1-2 parts of a dispersing agent, 0.5-2 parts of a thixotropic agent, 0.5-2 parts of a defoaming agent, 30-40 parts of pigment filler, 1-2 parts of a silane coupling agent and 0.5-2 parts of a flatting agent; the epoxy resin comprises bisphenol A epoxy resin and bisphenol F epoxy resin; the reactive diluent comprises alkyl glycidyl ether and aliphatic polyether polyol; the mass ratio of the alkyl glycidyl ether to the aliphatic polyether polyol is 1: 1; and the component B comprises modified alicyclic amine and 4-(aminomethyl) octane-1, 8-diamine, and the mass ratio of the modified alicyclic amine to the 4-(aminomethyl) octane-1, 8-diamine is (5.5-10): 1. The coating has excellent mechanical property and corrosion resistance.

The present invention relates to an oil-in-water type pest insect repellent composition that contains components (A) to (E). (A) 13-50 mass% of at least one type of non-volatile liquid oily component selected from among silicone oils, ester oils, ether oils, hydrocarbon oils, aliphatic alcohols and polyhydric alcohols; (B) 0.5-35 mass% of hydrophilic inorganic particles which have a volume-based median particle diameter of 1-40 µm and include silica particles and / or silicate mineral particles; (C) 0.1-3 mass% of one or more selected from among polyether-modified silicones, polyglycerin-modified silicones, branched polyglycerol-modified silicones, alkyl glyceryl ether-modified silicones and carboxyl-modified silicones, which are liquid at 25°C; (D) 0.05-3 mass% of a thickening agent; and (E) 30-86.35 mass% of water. The viscosity of component (A) at 23°C, as measured using a B type rotary viscometer, is 1-400 mPa·s. The silicone oil for component (A) does not include component (C).

The invention discloses a preparation method of two-component microcapsule self-repairing insulation paper based on epoxy resin and polymercaptan. The preparation method comprises the following steps: (1) preparing a repairing agent microcapsule and a curing agent microcapsule by an emulsion polymerization method; (2) mixing the prepared repairing agent microcapsule and curing agent capsule to obtain a bi-component microcapsule solution, and adding the bi-component microcapsule solution into the treated paper pulp; and (3) performing papermaking, drying and calendaring on the paper pulp added with the bi-component microcapsule solution to obtain the insulation paper. According to the invention, diglycerol ether type bisphenol F epoxy resin (DGEBF) stabilized by an emulsifier is adopted as a core of a repairing agent, polythiol (PETMP) stabilized by the emulsifier is adopted as a core of a curing agent, and the emulsifier is cellulose nanofiber, so that the insulating paper with self-repairing performance is prepared. The dielectric constant, the breakdown field strength, the tensile strength, the elongation at break and the thermal stability of the insulation paper are superior to those of traditional cellulose insulation paper, and the overall performance and the service life of the insulation paper can be effectively improved.

The invention discloses an efficient defluorination material and a preparation method thereof, and relates to the technical field of wastewater treatment. The specific preparation method comprises the following steps: adding magnesium salt and rare earth salt into water to obtain a mixed solution, then adding a template agent solution and a carrier, heating, then adding a precipitator solution, reacting to obtain a precursor, performing hydrothermal reaction on the precursor, separating out precipitate, and finally washing and drying to obtain the fluorine adsorption material. The carrier is a cross-linked microsphere, and the cross-linked microsphere is obtained by cross-linking a chitosan modifier and ethylene glycol diglycidyl ether; the high-efficiency defluorination material prepared by the preparation method disclosed by the invention is high in adsorption capacity, has very high adsorption capacity on fluorine ions, can be recycled for multiple times, and has very high value on treatment of fluorine-containing wastewater.

The invention relates to the field of plastic bags, and discloses a biodegradable plastic bag and a preparation method thereof, the biodegradable plastic bag comprises polylactic acid, poly (butylene adipate-co-terephthalate), a functional additive, modified starch, a lubricant and an antioxidant; the functional additive is prepared by grafting hydroxylated modified castor oil and isocyanated montmorillonite loaded titanium dioxide; the hydroxylation modified castor oil is prepared by modifying castor oil with chloroethyl isocyanate, then reacting with N-allylimidazole, and then reacting with 6-mercaptohexyl-1-alcohol; the isocyanated montmorillonite loaded titanium dioxide is prepared by reacting montmorillonite loaded titanium dioxide obtained by a sol-gel method with isophorone diisocyanate; the modified starch is prepared by reacting octadecanoyl chloride and acryloyl chloride with starch, then carrying out graft copolymerization with ethyl acrylate and further introducing glycidyl methacrylate, so that the plastic bag is endowed with excellent mechanical properties, biodegradability and antibacterial property.

The invention relates to the field of copper-clad plates, and discloses a low-dielectric-constant high-performance copper-clad plate and a preparation method thereof.The preparation method comprises the specific steps that epoxy resin, phenolic resin, polyphenyl ether modified resin, modified nano silicon dioxide and the like are taken and mixed to obtain a resin glue solution; impregnating glass fabric in the resin glue solution to obtain a prepreg; laminating prepregs, and covering copper foil for hot pressing; the polyphenyl ether modified resin comprises epoxy resin, diallyl cyanate and fluorine-containing polyphenyl ether resin prepared by reaction of polyphenyl ether, bisphenol AF and benzoyl peroxide; the modified nano silicon dioxide is prepared by reacting allyl glycidyl ether, vinyltriethoxysilane and phenyltris (dimethylsiloxane) silane, then grafting with a phosphorus-containing intermediate to prepare a modified additive, and grafting with nano silicon dioxide, and the phosphorus-containing intermediate is prepared by reacting phenylphosphoryl dichloride and eugenol. The copper-clad plate with high flame retardance, high peel strength, heat resistance and low dielectric constant is prepared.

The invention discloses an antibacterial bamboo joint pull rope material for tampons and a preparation method of the antibacterial bamboo joint pull rope material. Modified bentonite is introduced into an acrylic acid-acrylamide polymer, and a layered structure of the bentonite endows the antibacterial bamboo joint pull rope material with certain water absorption and water retention capacities; meanwhile, amino groups on the modified bentonite are chemically combined with carboxyl groups in the acrylic acid-acrylamide polymer, so that the modified bentonite is not easy to lose; according to the preparation method, firstly, water-absorbing fibers are soaked in a carboxymethyl chitosan solution, the surfaces of the water-absorbing fibers are coated with carboxymethyl chitosan, the carboxymethyl chitosan has excellent water-retaining and antibacterial properties, an antibacterial water-retaining layer is formed on the surfaces of the water-absorbing fibers, and then under the action of a cross-linking agent ethylene glycol diglycidyl ether, the antibacterial water-retaining layer is formed on the surfaces of the water-absorbing fibers. Hydroxyl groups and amino groups in the carboxymethyl chitosan and carboxyl groups and amino groups on the water-absorbing fibers are subjected to a cross-linking effect, so that the bonding strength and the cross-linking density between the carboxymethyl chitosan and the water-absorbing fibers are improved, liquid seepage is effectively prevented, and the water retention performance of the fiber material is further improved.

The invention relates to the technical field of toughening agents, in particular to a hyperbranched epoxy resin modified MBS toughening agent and a preparation method thereof.The preparation method comprises the following steps that (S1) a cyclotriazine compound, polyglycidyl ether and a catalyst are added into an organic solvent to be mixed, a reaction is conducted for 8-72 h at the temperature of 30-150 DEG C under the protection of nitrogen, and after the reaction is completed, alcohol precipitation and drying are conducted to obtain a hyperbranched epoxy resin modified MBS toughening agent; the hyperbranched epoxy resin is obtained; (S2) adding the hyperbranched epoxy resin into the solvent A, uniformly mixing, then adding MBS resin, stirring for 0.5-1 hour at a high speed under the condition of room temperature, then heating to 70-110 DEG C, stirring for 0.5-1 hour, and removing the residual solvent to obtain the hyperbranched epoxy resin modified MBS toughening agent, and by utilizing the hyperbranched characteristic of the resin, enabling the modified MBS toughening agent to be used for preparing the hyperbranched epoxy resin modified MBS toughening agent. The toughening effect can be achieved by adding a small amount of the toughening agent into common epoxy resin.