594 results about "Methacrylate methyl" patented technology

The invention relates to an epoxy core-shell polymer particle and resin, a preparation method of the epoxy core-shell polymer particle and resin and application of the epoxy core-shell polymer particle and resin to epoxy resin. The preparation method of the epoxy core-shell polymer particle comprises the following steps: heating and mixing a polybutadiene seed emulsion, a reducing agent, an emulsifier and the like; adding methyl methacrylate and an initiator, and glycidyl methacrylate and an initiator, and heating to react; compared with the prior art, the core-shell particle with the outer layer of the synthesized shell containing the epoxy group can be used for toughening the epoxy resin, so that the toughness of the epoxy resin is effectively improved while the excellent heat resistance and mechanical properties of the epoxy resin are maintained.

The invention discloses a biodegradable polylactic acid composite material and a preparation method thereof, and relates to the technical field of polylactic acid materials. The method comprises the steps that firstly, chitosan activated through hydrochloric acid is subjected to graft modification through a KH550 silane coupling agent, meanwhile, nano-zinc oxide is subjected to surface modification through stearic acid, the chitosan and the nano-zinc oxide are mixed, spray drying is conducted, and antibacterial composite powder is prepared; the preparation method comprises the following steps: performing hydrochloric acid activation and KH570 silane coupling agent modification on nano silicon dioxide, performing hydroxypropylation modification on alkali lignin, and performing reflux crosslinking reaction on the modified alkali lignin, KH570 modified nano silicon dioxide, polycaprolactone, methyl methacrylate and azodiisobutyronitrile to prepare a heat-resistant reinforcer; uniformly mixing polylactic acid, poly (butylene succinate), the antibacterial composite powder, the heat-resistant reinforcer, tributyl citrate, polyethylene glycol and talcum powder, and extruding and granulating by using a twin-screw extruder to obtain the heat-resistant antibacterial material. The composite material prepared by the invention has excellent antibacterial property, heat resistance and biodegradability.

The invention discloses a waterproof long-lasting oil-control gel composition and a preparation method thereof, and belongs to the technical field of cosmetics. The composition comprises 4-6 parts of an oil absorption compound A, 9-13 parts of an oil absorption compound B and 70-95 parts of a gel matrix, wherein the oil absorption compound A is prepared from mesoporous silica and poloxamer 407, and the aperture of the oil absorption compound A is 5-10 nm; the oil absorption compound B is prepared from polymethyl methacrylate microspheres, isododecane and polyglycerol-3 diisostearate, and the pore diameter of the oil absorption compound B is 150 to 300 nm. According to the invention, through dual mechanisms of temperature response and volatilization driving, a dynamic gradient structure of bottom layer small aperture-surface layer large aperture is formed at skin temperature, and directional migration of grease is realized; meanwhile, the surface property transformation of the material after oil absorption is creatively utilized, a hydrophobic membrane is formed on the surface of the polymethyl methacrylate microsphere, a self-enhanced waterproof barrier is constructed, the unique effect that the more oil is absorbed, the more water is resisted is achieved, the problem of makeup removal caused by sebum and sweat can be effectively solved, and the makeup lasting time is remarkably prolonged.

An extreme-cold resistant low-fume halogen-free flame-retardant polyolefin sheath, a preparation method therefor, and a cable. The sheath comprises the following raw materials in parts by mass: 4-16 parts of an ethylene-vinyl acetate copolymer, 7-13 parts of a phosphate group functionalized linear low-density polyethylene, 9-15 parts of an ethylene-octene copolymer, 5-10 parts of a maleic anhydride-grafted ethylene-methyl methacrylate copolymer, 10-15 parts of magnesium hydroxide, 40-50 parts of aluminum hydroxide, etc. The preparation method for the phosphate group functionalized linear low-density polyethylene comprises: adding a catalyst to a pre-cooled ethylene monomer, adding a vinyl phosphate ester and an initiator after the reaction, and reacting for 1-2 hours at a temperature of 65-75°C and a pressure of 15-35 Mpa and then terminating the reaction, thereby obtaining the phosphate group functionalized linear low-density polyethylene. Compared with unfunctionalized polyethylene, the phosphate group functionalized polyethylene used has greatly improved low-temperature and flame-retardant performance, and can improve the overall flame-retardant and low-temperature performance of the formula.

The invention discloses heat-resistant polymethyl methacrylate, a preparation method thereof and an optical film. The heat-resistant polymethyl methacrylate comprises a methyl methacrylate repetitive unit, a glutarimide repetitive unit and an N-methyl methacrylamide repetitive unit, and the sum of the number of the glutarimide constitutional unit and the number of the N-methyl methacrylamide constitutional unit is 1-20 mol% of the total number of the constitutional units. The glutarimide structural unit can be obtained by further cyclization reaction of an N-methyl methacrylamide structural unit, and the cyclization rate can be increased to 80-90% by adding a cyclization accelerator such as triethylamine, so that the thermal stability of the resin is improved, and the water absorption rate is reduced. The material can be used for preparing an optical film, has excellent heat resistance and moisture resistance, and is suitable for the field of optical display.

The invention relates to the technical field of new energy automobile power battery thermal management, in particular to a hydrated salt phase change microcapsule for a power battery and a preparation method of the hydrated salt phase change microcapsule. According to the specific technical scheme, hydrated salt serves as a core material, methyl methacrylate serves as a shell material monomer, the monomers are polymerized on the surfaces of hydrated salt liquid drops to form a polymethyl methacrylate shell layer through an interfacial polymerization method, effective packaging of a phase change material (hydrated salt) is achieved, and the microcapsule with high phase change latent heat, low leakage rate and long cycle life is obtained. In addition, other doped auxiliary materials are deposited on an oil-water interface to improve the heat conductivity of the microcapsule. And mixing the microcapsules with heat-conducting oil to prepare suspension liquid, and driving the suspension liquid to circularly flow between the power battery packs by a peristaltic pump. According to the invention, microcapsules and liquid cooling heat dissipation are combined to provide a new thought and practical and effective temperature control and heat dissipation effects for a heat management scheme of the power battery pack.

The invention discloses an environment-friendly water-based composite adhesive for transfer paper and a preparation method of the environment-friendly water-based composite adhesive. The environment-friendly water-based composite adhesive is prepared from the following raw materials in percentage by mass: 28-45% of methyl methacrylate; 30 to 40% of butyl acrylate; 0.3%-0.8% of an initiator; 2-4% of an emulsifier; 1-5% of butadiene; 0.5 to 1.5 percent of a tackifier; 0-0.15% of a reinforcing agent; 0.1 to 0.5 percent of a pH regulator; 0.05-0.25% of a defoaming agent and the balance of water; the preparation process comprises the following steps: S1, prepolymerizing butadiene; s2, preparing an acrylate emulsion; and S3, mixing and blending. The preparation method has the advantages that the butadiene, the tackifier and the reinforcing agent are used in the formula to regulate and control the adhesive force and the toughness of the adhesive film, the types of the acrylate monomers are reduced, and the defects that the regulation and control capability is limited, the variables are multiple and the parameters are difficult to consider simultaneously when the types and the contents of the acrylate soft and hard monomers are accurately controlled to regulate and control the parameters are overcome.

The application discloses a quinoline small molecule blended modified polymer dielectric material and a preparation method and application thereof, and belongs to the technical field of capacitor films. The preparation raw materials comprise quinoline derivatives, polymethyl methacrylate, styrene-methyl methacrylate copolymer, polyetherimide, polypropylene and N-methyl pyrrolidone solution, and the preparation steps comprise blending and film preparation. The blending solution or eutectic mixture is prepared through blending, and the polymer dielectric film is prepared through a flow casting method or bidirectional stretching. The prepared quinoline small molecule blended modified polymer dielectric film has excellent electrical properties, can reduce the leakage current of the polymer material, has high DC breakdown field strength, high energy storage density and low energy loss, and is easy to realize large-scale production.

The invention relates to the technical field of papermaking and food packaging materials, in particular to a preparation method of full-degradable plastic-substituted high-strength food packaging paper. Preparing a fiber layer by taking plant fiber as a base material; the preparation method comprises the following steps: grafting a methyl methacrylate-butyl acrylate block copolymer on nano-cellulose through an atom transfer radical polymerization technology to prepare enhanced nano-cellulose; dialdehyde starch rich in aldehyde groups and chitosan are subjected to a Schiff base reaction to form a dynamic cross-linked network, polylactic acid microspheres modified by beta-cyclodextrin are introduced to serve as supramolecular enhancement units, and functional coating liquid is prepared; and finally, coating the functional coating liquid on the fiber layer, and drying, cross-linking and curing to obtain a finished product. Through cooperation of chemical grafting, dynamic covalent bonds and supramolecular action, the packaging paper is endowed with extremely high strength and toughness and excellent oil and moisture resistance and heat sealability, meanwhile, it is ensured that the packaging paper can be completely biodegraded in the natural environment, and functional replacement of traditional plastic packaging is successfully achieved.

The invention relates to the technical field of high polymer materials, and particularly discloses a composite membrane material. The composite membrane material comprises a glass fiber reinforced acrylic prepreg with the thickness of 200-400 microns and a thermoplastic organic functional layer with the thickness of 10-30 microns, the glass fiber reinforced acrylic prepreg comprises a base material and a reinforcing material, the base material is prepared from the following raw materials in parts by weight: 90 to 110 parts of acrylic resin, 0.8 to 2.5 parts of an initiator and 0.2 to 0.8 part of an antioxidant; the acrylic resin is a methyl methacrylate-hydroxyethyl acrylate copolymer and / or hyperbranched epoxy modified acrylic resin; the thermoplastic functional coating comprises the following raw materials in parts by weight: 5-15 parts of polyimide / polymethyl methacrylate, 0-2 parts of a plasticizer and 2-8 parts of an organic solvent. The composite membrane material disclosed by the invention has the advantages of high mechanical strength, good interface compatibility, low surface roughness and the like, and has a very good application prospect.

This invention discloses a method for preparing a high-adhesion flake-shaped zinc powder pigment, belonging to the field of functional pigment preparation technology. The preparation steps are as follows: spherical zinc powder is ball-milled using prismatic irregular grinding media to obtain micro-serrated flake-shaped zinc powder; purified phosphate coupling agent, methyl methacrylate, high-purity citric acid, and a self-made high-acid-value copolymer dispersant are mixed in proportion, and ultrasonically dispersed with ethanol to prepare a composite modification liquid; the flake-shaped zinc powder is added to the modification liquid according to the liquid-solid ratio, and after gradient heating reaction, centrifugation, gradient ethanol washing, and vacuum drying, modified zinc powder is obtained; after classification, fine, medium, and coarse particle sizes are mixed in proportion to obtain the target pigment. The high-acid-value dispersant in this invention inhibits agglomeration through strong adsorption and steric hindrance, synergistically with the coupling agent and monomers to construct an active graft layer, and combined with the serrated structure to strengthen physical anchoring and chemical bonding. It exhibits stable dispersion and excellent mechanical properties, meeting the high adhesion and high corrosion resistance requirements of industrial coatings.

The invention belongs to the technical field of gas sensors, and discloses a portable ratio fluorescent film sensor for visual detection of oxygen as well as a preparation method and application of the portable ratio fluorescent film sensor. According to the sensor, polymethyl methacrylate is used as a base material, a carbon dot emitting blue light is used as a fluorescent indicator, protoporphyrin emitting red light is used as a fluorescent reference agent, and the two materials are physically blended to form a blue-red dual-emission system; under the excitation of 365nm ultraviolet light, the oxygen concentration affects the yield of active oxygen, the active oxygen quenches the fluorescence of the carbon dots, the fluorescence of protoporphyrin is stable, and the sensor gradually changes from blue violet to red. Meanwhile, the invention discloses an oxygen quantitative / semi-quantitative detection method of the sensor. The preparation process is simple, the cost is low, the detection operation is simple and convenient, the anti-interference performance is strong, the high-sensitivity visual portable detection of the oxygen concentration can be realized, and the sensor is suitable for the fields of food packaging, medical monitoring, industrial safety and the like, and has the potential of large-scale production and commercial application.

The invention discloses a method for preparing three-dimensional graphene foam from organic silicon waste liquid, the three-dimensional graphene foam and application, and the preparation method comprises the following steps: (1) preheating and evaporating the organic silicon waste liquid to obtain organic silicon waste liquid steam, and mixing the organic silicon waste liquid steam with water vapor to obtain organic silicon waste liquid steam; then hydrolyzing in an inert atmosphere with a carrier gas flow rate of 100-1000 sccm, cooling, filtering to obtain synthesis gas, and passing the synthesis gas through an alkaline substance to obtain purified synthesis gas; (2) introducing the purified synthesis gas into a reaction furnace, carrying out a chemical vapor deposition reaction by taking foamed nickel as a substrate to obtain a three-dimensional graphene foam initial product and hydrogen-rich synthesis gas, and then preparing the hydrogen-rich synthesis gas on the surface of the three-dimensional graphene foam initial product according to the dosage per unit area of 0.2-1.0 mL / cm < 2 >, an anisole solution proppant of polymethyl methacrylate with the mass content of 5%-10% is coated, and then the three-dimensional graphene foam is obtained through acid etching. The three-dimensional graphene foam prepared by the method has excellent conductivity, is suitable for the field of functional materials such as electromagnetic shielding materials, and has a good industrial application prospect.

The application relates to the field of decorative materials, in particular to a wear-resistant decorative paper and a preparation method thereof. The preparation method of the wear-resistant decorative paper comprises the following steps: coating wear-resistant paint on the surface of base paper to form a wear-resistant coating layer through drying treatment, so that the wear-resistant decorative paper is prepared; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate and methyl methacrylate, so that the wear-resistant paint has good adhesion; the wear-resistant paint is prepared by using divinylbenzene and styrene, so that the hardness and strength of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using vinyl silicone oil, so that the flexibility and water / oil repellency of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate, methyl methacrylate, divinylbenzene, styrene and vinyl silicone oil, so that the prepared wear-resistant decorative paper has excellent wear resistance.

The present invention relates to a polycarbonate composition comprising the following components, relative to the total weight of the composition A) 63-81 wt. % of an aromatic polycarbonate,B) 13-20 wt. % of a phosphorus flame retardant,C) 4-12 wt. % of impact modifiers containing 1-7 wt. % of a first impact modifier and 1-7 wt. % a second impact modifier, wherein the first impact modifier is acrylonitrile-butadiene-styrene, and the second impact modifier is selected from methyl methacrylate-butadiene-styrene and silicone-acrylic rubber based impact modifiers,D) 1-6 wt. % of a mineral filler, andE) 0.05-0.09 wt. % of polytetrafluoroethylene.The present invention also relates to a shaped article made from the composition. The polycarbonate composition according to the present invention has a good combination of flame retardancy and impact strength.

A transparent wood surface imprinting optical device is provided. A preparation method for the device includes cleaning and drying surfaces of transparent wood, spin-coating polymethyl methacrylate (PMMA) on a substrate of the transparent wood to obtain a PMMA layer, and spin-coating an ultraviolet (UV) glue on the PMMA layer to obtain a UV glue layer; placing the transparent wood on a silicon wafer, attaching a transparent grating array imprinting template on the UV glue layer, exposing the UV glue layer, and removing the transparent grating array imprinting after the exposing, thereby to obtain a grating-structure-based transparent wood; and replacing the grating structure imprinting template by a lattice structure imprinting template to prepare lattice-structure-based transparent wood. The diffraction efficiency of the grating structure and the lattice structure on the transparent wood are greater and more stable than those of PMMA substrates.

The invention discloses chlorinated polypropylene modified water-based acrylic resin with high adhesive force and water resistance and a preparation method of the chlorinated polypropylene modified water-based acrylic resin. The chlorinated polypropylene modified water-based acrylic resin is prepared from the following components in percentage by mass: 5-15% of chlorinated polypropylene, 20-30% of methyl methacrylate, 5-10% of isobornyl acrylate, 10-15% of methoxy polyethylene glycol monomethacrylate, 3-5% of acrylic acid, 0.5-1.5% of an initiator and 2-5% of hydroxyethyl acrylate. The cleaning agent is prepared from the following components in percentage by weight: 20-40% of triethanolamine, 3-8% of triethanolamine, 5-10% of acetone, 20-40% of sec-butyl acetate and 1-5% of deionized water. The optimal raw material composition and proportion are screened through a large number of experiments, the optimal synthesis process is preferably obtained through a large number of experiments, the conversion rate reaches up to 99%, and the solid content of the resin reaches 65% or above. The chlorinated polypropylene modified water-based acrylic resin with high adhesive force and water resistance has the advantages of excellent adhesive force, water resistance, storage stability and the like, and has a very good technical effect in comprehensive performance.

The present application relates to a kind of compositions that can be engraved with high surface hardness white mark and its preparation method and application.The compositions that can be engraved with high surface hardness white mark include polymethyl methacrylate, styrene-acrylonitrile copolymer, acrylate rubber and black and white laser marking agent.The compositions that can be engraved with high surface hardness white mark provided by the present application are black and white after laser, and the white mark obtained has the same surface hardness as the composition before engraving, showing excellent scratch resistance.

The invention relates to the technical field of high-voltage cables, in particular to a crosslinked polyethylene insulated high-voltage direct-current cable, which is characterized in that an insulating layer contains a crosslinked polyethylene base material, a composite modifier, an antioxidant compound system, a nano nucleating agent, a tracking-resistant agent, a compatilizer and a smoke suppressant, the composite modifier is prepared by compounding an ethylene-vinyl acetate copolymer and a methyl methacrylate-butadiene-styrene copolymer, the antioxidant is prepared by compounding hindered phenol and phosphite ester, the nano nucleating agent is prepared from silane coupling agent KH-550 modified talcum powder and calcium carbonate, the tracking-resistant agent is prepared from melamine cyanurate and stearic acid activated magnesium hydroxide, and the lubricant is prepared from a lubricant and a lubricant. The compatilizer is maleic anhydride grafted polyethylene, and the smoke suppressant is compounded by ammonium molybdate and tin oxide. The components synergistically improve the flexibility, aging resistance and dielectric property of the insulating layer, the tracking resistance and smoke suppression are balanced, and the preparation process solves the problem of additive agglomeration, accurately controls the crosslinking degree, reduces the internal stress and improves the performance uniformity.

The invention provides yellow glue resistant to corrosion of a plasticizer and a preparation method of the yellow glue. The yellow glue is prepared from a polyurethane prepolymer, a chloroprene rubber sheet, methyl methacrylate, benzoyl peroxide, an anti-aging agent, butanone, cyclohexane, dimethyl carbonate and tackifying resin. The polyurethane prepolymer is prepared from the following components in parts by weight: 10 to 14 parts of 1, 4-butanediol adipic acid polyester polyol, 4 to 8 parts of polycaprolactone polyol, 1 to 3 parts of diphenylmethane diisocyanate, 0.05 to 0.15 part of 1, 6-hexanediol, 1 to 2 parts of hydroxyethyl methacrylate, 0.01 to 0.03 part of organic bismuth catalyst and 75 to 80 parts of butanone. The polyurethane prepolymer with specific crystallization performance is synthesized through cooperation of polycaprolactone polyol and polyester polyol, and the yellow glue is endowed with excellent plasticizer corrosion resistance and low-temperature activation capacity. Active groups in the polyurethane prepolymer are subjected to graft copolymerization with the chloroprene rubber adhesive and MMA, and a plasticizer-resistant polyurethane chain segment is introduced into a molecular chain of the chloroprene rubber adhesive, so that a hard segment-soft segment alternating block structure is formed, and corrosion resistance and viscoelasticity are both considered.

The invention relates to the technical field of preparation of bone cement, and particularly discloses a preparation method of a photo-thermal response type gold nanorod-bone cement composite material. The method comprises the following steps: synthesizing a gold seed solution; constructing a growth solution; controlling the growth of the nanorod; gradient centrifugal purification; carrying out surface ligand exchange (sulfydryl-PEG); preparing a bone cement composite material; curing and forming; gold nanorods (GNRs) are uniformly embedded into a polymethyl methacrylate (PMMA) bone cement matrix, so that the problems that free nanorods are easy to migrate and poor in bone targeting are solved. The local temperature can be accurately controlled, and damage to surrounding tissues is avoided. According to the invention, immunogen cell death (ICD) can be effectively induced, and anti-tumor immune response can be activated. According to the invention, enough mechanical support can be provided, and the stability after implantation is ensured.

The invention provides a preparation method of methacrylic acid 2-butoxyethyl ester, and belongs to the technical field of organic synthesis. According to the invention, p-hydroxyanisole (MEHQ) and 2, 2, 6, 6-tetramethylpiperidine oxide (TEMPO) are used as polymerization inhibitors at the same time, and the dual polymerization inhibitors are synergistically used, so that the auto-polymerization of methyl methacrylate (MMA) and 2-butoxyethyl methacrylate is reduced, and the conversion rate is increased.

The invention discloses a preparation method of a self-degradation fracturing drag reducer, and relates to the technical field of drag reducer preparation.The self-degradation fracturing drag reducer is prepared by mixing acrylamide, acrylic acid, methyl methacrylate, a modified additive and a modified filler to react, a molecular chain segment of the drag reducer contains a cyclodextrin structure, and the molecular chain segment of the drag reducer contains a cyclodextrin structure; the drag reducer can be self-degraded, cyclodextrin has a hydrophilic outside and a hydrophobic inside cavity ring structure, and can interact with hydrophobic groups in drag reducer polymer molecules through a host-guest inclusion effect, so that hydrophobic aggregation is destroyed, and drag reducer chains are easier to stretch and dissolve in water; meanwhile, the thermal motion of a polymer molecular chain can be limited, the drag reducer is kept stable in a high-temperature stratum, the flowing resistance of fracturing fluid in pipelines and cracks can be effectively reduced due to the self-lubricating characteristic of the modified filler, and the anti-shearing effect of the drag reducer can be improved due to the cooperation of the modified filler and a cyclodextrin structure on the molecular chain.

The present application relates to the technical field of biological materials, in particular to a light-responsive drug gel carrier and a preparation method thereof, in order to improve the controlled release function of the hydrogel material, the methyl methacrylate nitrobenzene compound containing nitrobenzene structure, hydantoin structure and propylene structure is prepared first, under the action of a photoinitiator, the double bond is crosslinked with methyl methacrylate and ethylene glycol methacrylate to form a hydrophilic gel network, so that the drug gel carrier is obtained; wherein the nitrobenzene structure has photosensitivity, and the crosslinking structure will be broken under ultraviolet irradiation, thereby reducing the stability of the gel material, destroying the rearrangement of the gel micelle structure, and realizing the release of the loaded drug; and the hydantoin structure introduced in the methyl methacrylate nitrobenzene compound also has good antibacterial performance, which can effectively avoid wound infection and improve wound recovery.

The invention discloses a method for rapidly forming a nano pattern by using a block copolymer and application thereof. The method for rapidly forming the nano-pattern by using the block copolymer comprises the following steps: dissolving the polystyrene-polymethyl methacrylate block copolymer in a mixed solvent consisting of a low-boiling-point organic solvent and a high-boiling-point organic solvent, wherein the boiling point of the low-boiling-point organic solvent is lower than 150 DEG C, and the boiling point of the high-boiling-point organic solvent is lower than 150 DEG C; the boiling point of the high-boiling-point organic solvent is higher than 150 DEG C, the high-boiling-point organic solvent is spin-coated on the surface of a substrate to form a thin film, annealing and plasma etching are carried out, and the periodic nano-pattern is obtained. According to the method for rapidly forming the nano pattern by using the segmented copolymer, the annealing time is shortened to be within 5 min, the production efficiency is remarkably improved, the formed nano pattern is high in structural orderliness and low in defect rate, and the method is suitable for the fields of semiconductor guided self-assembly photoetching, nanoimprint template manufacturing, high-density storage device preparation and the like.

The application belongs to the technical field of coatings, and particularly relates to a putty based on ultraviolet light curing resin and a preparation method and application thereof. The putty based on ultraviolet light curing resin comprises, by mass fraction, 30-50 parts of ultraviolet light curing resin, 25-45 parts of fillers, 3-6 parts of diluents, 3-6 parts of poly(methyl methacrylate-co-methyl methacrylate), and 0.05-1.5 parts of a photoinitiator. The ultraviolet light curing resin comprises a light curing unsaturated polyester resin and a polyester acrylate. The fillers comprise antioxidants / halloysite nanotubes / basalt fibers, nano calcium carbonate, and nano zirconium oxide. The putty based on ultraviolet light curing resin has good adhesion, flexibility, impact resistance, heat resistance, and high and low temperature resistance, and can be applied in the fields of automobile repair and furniture manufacturing.

The invention provides a self-repairing glass fiber composite material as well as a preparation method and application thereof. The self-repairing glass fiber composite material comprises a self-repairing layer, a matrix layer and a glass fiber prepreg which are sequentially stacked, the material of the self-repairing layer comprises self-repairing polyurethane; and the material of the matrix layer comprises polymethyl methacrylate. According to the self-repairing glass fiber composite material, specific structural design and material selection are adopted, the photovoltaic module can be endowed with a self-repairing function, the repairing efficiency is high, and the problem that the performance and the service life of the module are affected due to the phenomena of scratching, cracking, damage and the like on the surface of the module is avoided.

The application provides an external curing agent with passive anti-icing performance and a preparation method and application thereof, and belongs to the technical field of building materials.The external curing agent comprises a functional component and a basic component in a mass ratio of (80-83):129.2, wherein the functional component comprises methyl acryloyloxy functionalized Co3O4, modified polydimethylsiloxane, perfluorooctyl methacrylate, methyl methacrylate and isooctyl acrylate, and the basic component comprises water, an emulsifier, a pH buffer, N-hydroxymethyl acrylamide, butyl acrylate and an initiator.The application realizes the synergistic effect of anti-icing, water retention and strength enhancement through nano-functionalization and fluorosilicon hydrophobic modification in combination with precise proportioning of soft and hard monomers, and the prepared curing agent is suitable for concrete curing in a cold environment (0 DEG C to -15 DEG C), can maintain film stability under low-temperature conditions, prevents surface icing while blocking water evaporation, and solves the problem of early concrete frost damage.

The invention relates to the technical field of slag cement materials, in particular to low-carbon early-strength gypsum slag cement and a preparation method thereof. The low-carbon early-strength gypsum slag cement is prepared from the following components in parts by weight: 40 to 50 parts of semi-hydrated phosphogypsum, 45 to 55 parts of slag powder, 3 to 8 parts of modified metakaolin, 1 to 4 parts of quick lime, 4 to 10 parts of cement clinker, 0.2 to 0.8 part of accelerator, 0.1 to 0.3 part of water reducing agent and 0.5 to 2.5 parts of water glass, the modified metakaolin is prepared by firstly carrying out surface treatment on 3-methacryloxypropyltrimethoxysilane and then carrying out copolymerization reaction on the modified metakaolin, methyl methacrylate, modified organic silicon and methacrylamide. The low-carbon early-strength gypsum slag cement prepared by the invention not only has excellent mechanical properties, but also has excellent water resistance.

This invention relates to the field of ABS material technology, and more particularly to an impact-resistant composite ABS sheet and its preparation method. The raw materials of the aforementioned impact-resistant composite ABS sheet, by weight, include: 100-200 parts of emulsion-processed ABS resin, 10-20 parts of butadiene monomer, 5-10 parts of methyl methacrylate, 1-5 parts of glycidyl acrylate, 1-5 parts of maleic anhydride, 5-15 parts of styrene, 1-5 parts of aminated silica, 0.1-0.5 parts of benzoyl peroxide, 0.1-0.3 parts of triethylamine, 0.1-1 parts of emulsifier, 0.01-0.1 parts of first initiator, 0.05-0.2 parts of second initiator, 1-3 parts of oxidized polyethylene wax, 1-2 parts of lubricant, and 1-3 parts of antioxidant. This invention solves the contradiction between the heat resistance and impact strength of ABS resin, and has significant advantages over traditional modified systems, fully meeting the application requirements of the sheet in high-temperature vibration environments.