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796 results about "Acrylate" patented technology

Acrylates (IUPAC: prop-2-enoates) are the salts, esters, and conjugate bases of acrylic acid and its derivatives. The acrylate ion is the anion CH₂=CHCOO⁻. Often acrylate refers to esters of acrylic acid, the most common member being methyl acrylate. Acrylates contain vinyl groups directly attached to the carbonyl carbon. These monomers are of interest because they are bifunctional: the vinyl group is susceptible to polymerization and the carboxylate group carries myriad functionality. Modified acrylates are also numerous, include methacrylates (CH₂=C(CH₃)CO₂R) and cyanoacrylates (CH₂=C(CN)CO₂R).

Optical monomer as well as preparation method and application thereof

The invention relates to an optical monomer and a preparation method and application thereof, the structural general formula of the optical monomer is as follows: R1, R2 and R3 are respectively selected from one of hydrogen and C1-C4 alkyl, A1 is selected from one of hydrogen and C1-C4 alkyl, and A2 is C1-C4 alkyl; r4 is selected from one of H, phenyl and C1-C4 alkyl, and A2 is C1-C4 alkyl; and R5 is hydrogen or methyl. The optical monomer provided by the invention contains a (methyl) acrylate group, and has the properties of high refractive index and low volume shrinkage; and a plurality of aromatic rings with high molar refractive index and low molar volume are contained, so that the whole molecule of the whole monomer is extremely high in refractive index. The monomer structure provided by the invention has a plurality of branched chains, the overall molecular weight is small, and the molecules are not easy to agglomerate.
Owner:ZHUHAI MOJIE TECH CO LTD

High-toughness and high-energy-absorption polymer emulsion modified mortar and preparation method thereof

The invention relates to the field of building materials, and discloses high-toughness and high-energy-absorption polymer emulsion modified mortar and a preparation method thereof, and the mortar is composed of ordinary Portland cement, river sand, a polymer emulsion, water, an active admixture and chopped fibers. Wherein the polymer emulsion is selected from styrene-acrylic emulsion (SBR), ethylene-vinyl acetate (EVA), polyurethane emulsion or a combination thereof; the mixing amount is 5-20wt% of the mass of the cementing material. According to the invention, a viscoelastic network is formed in a cement matrix through the polymer emulsion, and the synergistic effect of the active admixture and the chopped fibers is combined, so that the bonding strength, the crack resistance, the impact resistance and the stress wave dissipation capability of the mortar are remarkably improved. Test results show that the mortar provided by the invention is obviously superior to ordinary mortar in the aspects of 28d breaking strength, impact toughness and stress wave attenuation performance, and is suitable for high-performance constructional engineering and protective engineering.
Owner:SOUTHEAST UNIV

High-toughness corrosion-resistant medium-voltage power cable

The invention relates to the technical field of cables, and provides a high-toughness corrosion-resistant medium-voltage power cable, which comprises a conductor, and an insulating layer, a shielding layer, an armor layer and a sheath layer which are sequentially arranged outside the conductor, the sheath layer comprises the following components in parts by weight: 70-100 parts of polyvinyl chloride, 30-40 parts of nitrile rubber, 10-15 parts of a flame retardant, 15-20 parts of a plasticizer, 1-3 parts of an antioxidant, 5-10 parts of a filler, 2-4 parts of a heat stabilizer, 1-3 parts of a compatilizer and 0.5-2 parts of a cross-linking agent; the filler is prepared from the following raw materials in parts by weight: 100 parts of calcium carbonate, 20 to 24 parts of 2-ethylhexyl acrylate and 6 to 10 parts of acrylic acid. According to the technical scheme, the problem of poor corrosion resistance of the medium-voltage power cable in the prior art is solved.
Owner:ANHUI MINGDU ELECTRIC WIRE

Super-tough, temperature-resistant and self-repairing copolymer based on SBS acrylate dynamic synergistic reinforcement and preparation method of super-tough, temperature-resistant and self-repairing copolymer

The invention discloses a super-tough temperature-resistant self-repairing copolymer based on SBS acrylate dynamic synergistic reinforcement and a preparation method thereof, and belongs to the technical field of self-repairing materials in compositions of high-molecular compounds. The copolymer comprises SBS, an acrylate monomer, a dynamic bond functional monomer, an initiator, a cross-linking agent, a nano reinforcing agent and a temperature-resistant modifier, wherein the dynamic bond functional monomer comprises at least one of acryloyloxyethyl disulfide, acrylamide acryloyloxyethyl disulfide or anthracene methyl acrylate. The molecular structure of the dynamic bond functional monomer contains a carbon-carbon double bond and a disulfide bond, in the free radical polymerization reaction initiated by the initiator, the carbon-carbon double bond is opened and is subjected to a copolymerization reaction with an SBS chain segment or an acrylate chain segment, so that the disulfide bond enters the polymer chain segment, the dynamic disulfide bond can be reversibly broken and recombined at high temperature, and the dynamic bond functional monomer is obtained. The high-temperature viscoelasticity is maintained, the material is endowed with self-repairing capability, and the problem that the viscoelasticity of the material in the prior art is sharply reduced at high temperature (gt; 120 DEG C) is solved.
Owner:ANHUI FUYIN NEW MATERIALS CO LTD

Negative electrode binder composition, negative electrode binder and preparation method therefor, negative electrode sheet, battery cell and battery

Disclosed are a negative electrode binder composition, a negative electrode binder and a preparation method therefor, a negative electrode sheet, a battery cell, and a battery. The negative electrode binder composition comprises the following components: an acrylic monomer, a hydroxydopamine monomer, a long-chain alkyl (meth) acrylate monomer, and a vinyl siloxane monomer.
Owner:BYD CO LTD

Triplet-triplet energy transfer free radical I type photo-initiation system and application thereof

The invention relates to the technical field of photoinitiators, and provides a triplet-triplet energy transfer (TTET) free radical I type photoinitiation system, a photocuring composition and application thereof. The system comprises a boron dialkylated dipyrromethene free radical I type photoinitiator and a long wave absorption photosensitizer, the photosensitizer is preferably an osmium (II) complex, and the mass ratio of the photosensitizer to the photoinitiator is preferably 1: 5-1: 200. Under the irradiation of a 650-750 nm light source (preferably a 690 nm LED), the photosensitizer enters a triplet state through intersystem crossing and generates TTET to the photoinitiator, so that the photoinitiator is uniformly split in the triplet state to generate free radicals, thereby initiating polymerization / cross-linking curing of monomers such as (methyl) acrylate and the like. The embodiment shows that the double bond conversion rate of the TPGDA can reach more than 80% within 10 minutes under the conditions of LED at 690 nm and 80 mW / cm < 2 >.
Owner:JIANGNAN UNIV

Preparation method for silicon-carbon composite negative electrode material and use thereof

The present invention relates to a preparation method for a silicon-carbon composite negative electrode material, comprising the following steps: (P1) co-polymerization: co-dissolving an unsaturated organic acid, an acrylate monomer and an acrylamide monomer in water at a specific ratio, and co-polymerizing same under the action of a sacrificial agent of a saturated organic acid and an initiator to obtain a suspension containing an acrylic copolymer; (P2) alkali treatment: performing an alkali treatment and filtration on the suspension to obtain copolymer particles; (P3) in-situ polymerization: performing in-situ polymerization of phenolic aldehyde on the surfaces of the copolymer particles to obtain a composite resin of a phenolic aldehyde-coated acrylic copolymer; (P4) heat treatment: performing a heat treatment on the composite resin in an oxidizing gas atmosphere to obtain porous carbon; and (P5) performing silicon deposition and carbon coating on the porous carbon to obtain the silicon-carbon composite negative electrode material. When the silicon-carbon composite negative electrode material prepared in the present invention is used in a lithium battery, the volume expansion of silicon can be effectively relieved, and the cycling performance and charge-discharge capacity of a lithium-ion battery are improved.
Owner:BEIJING IAMETAL NEW ENERGY TECH CO LTD +1

Low-temperature-resistant lubricating oil composition and preparation method thereof

The invention relates to the technical field of lubricating oil, and discloses a low-temperature-resistant lubricating oil composition and a preparation method thereof. Mineral oil, modified polymethacrylate, a dispersing agent, an antioxidant and an oil defoaming agent are stirred and mixed and then filtered, and the low-temperature-resistant lubricating oil composition is obtained. The cross-linking agent enables polymethacrylate to form a light cross-linked structure, and stress can be dispersed during shearing; nitrogen atoms in triazinyl, pyridyl, pyrrolidone and Mannich base structures serve as hydrogen bond receptors, the hydrogen bond interaction with hydroxyl on a polymethacrylate molecular chain is enhanced, a physical cross-linked network is formed, and the shear resistance is further improved; in the modified low-temperature-resistant monomer, the glass-transition temperature can be remarkably reduced by high flexibility of silicon oxygen bonds in long straight-chain alkyl and silane groups, so that a molecular chain can still move at a low temperature, and the low-temperature fluidity of the lubricating oil is improved; the cyclic structure of cyclohexyl can effectively interfere with the ordered arrangement of wax crystals, reduce the pour point of the lubricating oil and improve the low-temperature fluidity.
Owner:TONGYI PETROLEUM CHEM CO LTD

Acrylate gel material with low shrinkage rate and preparation method thereof

PendingCN121673463AEpoxyPolymer science
The invention discloses a low-shrinkage acrylate gel material and a preparation method thereof. The gel material is prepared by mixing a solution A and a solution B according to an equal proportion, the liquid A comprises acrylate, a cross-linking agent, an accelerant and a retarder; the acrylate is a calcium acrylate solution, a magnesium acrylate solution or a mixed solution of calcium acrylate and magnesium acrylate; the concentration of the acrylate in the solution A is 15wt.%-35wt.%; the liquid A is also added with a modified material, and the modified material is selected from at least one of hydroxyethyl ester, chloroprene rubber, polyurethane, polyvinyl alcohol and epoxy resin; the addition amount of the modified material is 1%-5% of the total mass of the solution A; the solution B comprises an initiator and distilled water; the initiator is selected from at least one of ammonium persulfate, hydrogen peroxide and azodiisobutyronitrile; the use amount of distilled water in the solution B is determined according to initiator concentration; by optimizing an acrylate compound system, introducing an anti-shrinkage functional component and accurately controlling a preparation process, the comprehensive improvement of material performance and engineering applicability is finally realized.
Owner:CHINA RAILWAY 20TH BUREAU GROUP CO LTD +2

Hydrolysis-resistant low-temperature-resistant two-component nano acrylate grouting plugging material and preparation method thereof

PendingCN121628267APolymer sciencePtru catalyst
The invention discloses a hydrolysis-resistant low-temperature-resistant bi-component nano acrylate grouting plugging material and a preparation method thereof. The plugging material is prepared by mixing a component A and a component B according to a volume ratio of 1: 1, the component A is prepared from the following components in parts by mass: 25 to 40 parts of acrylate, 12 to 20 parts of hydrolysis-resistant modified component, 3 to 8 parts of low-temperature-resistant functional component, 8 to 15 parts of nano modified filler, 0.3 to 0.8 part of cross-linking agent, 1.5 to 3.0 parts of accelerant, 0.3 to 0.6 part of pH regulator and 40 to 50 parts of deionized water; the component B is prepared from the following components in parts by mass: 1.5 to 2.5 parts of a composite initiator, 0.2 to 0.5 part of a low-temperature catalyst, 0.8 to 1.5 parts of a dispersion stabilizer, 0.3 to 0.8 part of a hydrolysis-resistant auxiliary agent and 90 to 100 parts of deionized water; the plugging material meets the following performance indexes: the 28d compressive strength is greater than or equal to 6.5 MPa, the strength retention rate is greater than or equal to 85% when the plugging material is soaked in distilled water at 50 DEG C for 30 days, the strength loss is less than or equal to 10% when the plugging material is frozen and thawed for 30 times at-30 DEG C, the 28d bonding strength with a concrete base material is greater than or equal to 2.5 MPa, the 0.1 mm micro-crack penetration depth at 25 DEG C is greater than or equal to 60 mm, and the setting time at 25 DEG C is 30 seconds to The method can effectively meet the requirement for leakage water treatment in the high-humidity and high-water-pressure environment of underground engineering in the cold region.
Owner:CHINA RAILWAY 20TH BUREAU GROUP CO LTD

Preparation method of modified acrylic resin and application thereof

The present application relates to the technical field of resin coating, and particularly relates to a preparation method of modified acrylic resin and application thereof, which comprises the following steps: firstly, hydrolysis and condensation of multiple organosilicon alkoxyl monomers, then grafting with epoxy resin to obtain organosilicon-epoxy resin containing vinyl; subsequently, under the protection of nitrogen, a premixed solution of styrene, multiple acrylate monomers, initiator and solvent is added dropwise into a reaction kettle containing the resin, and after polymerization by staged heat preservation, parameters are adjusted to obtain the modified acrylic resin. The resin has a ternary hybrid structure of acrylic acid, epoxy and organosilicon through grafting, condensation and copolymerization, and has good film forming property, high adhesion, excellent high temperature resistance and flexibility. The coating prepared by using the resin can realize normal temperature self-drying, and the coating layer is dense and smooth, has strong adhesion, good corrosion resistance and impact resistance, and can withstand high temperature and cold cycle, and is suitable for protection of parts which need long-term high temperature and corrosion resistance.
Owner:WEIFANG FULE NEW MATERIAL CO LTD

Hardening liquid, hardened film, preparation method of hardened film and polaroid

The invention provides hardening liquid, a hardening film, a preparation method of the hardening film and a polaroid, and relates to the field of optical film materials. The hardening liquid is prepared from the following components in parts by weight: 10 to 60 parts of hydroxy acrylic resin, 40 to 80 parts of polyurethane modified acrylate, 5 to 40 parts of acrylate monomers, 1 to 8 parts of an initiator, 1 to 15 parts of a curing agent, 50 to 200 parts of a high-boiling-point solvent, 50 to 200 parts of a low-boiling-point solvent, 5 to 40 parts of nano particles and 0.01 to 0.2 part of a flatting agent, wherein the boiling point of the high-boiling-point solvent is 100 to 200 DEG C, and the boiling point of the low-boiling-point solvent is 60 to 90 DEG C. The high-hardness and low-warpage transparent hard coating film provided by the invention has the advantages of high pencil hardness, low warpage, excellent wear resistance, excellent adhesive force and low haze, is high in process adaptability, and has shallow MD (machine direction) stripes after rolling.
Owner:CHENGDU RAYBOCH MATERIAL TECH CO LTD

Binder, ceramic separator, and secondary battery

The application discloses a kind of binder, ceramic diaphragm and its secondary battery.The binder includes first polymer and second polymer, the first polymer and the second polymer are connected by chemical bond;The first polymer is polyacrylate polymer or SBR polymer containing first self-crosslinking structural unit, the Tg of the first polymer is ≤20 ℃, the second polymer is polyacrylic acid polymer or polyacrylamide polymer containing second self-crosslinking structural unit, the Tg of the second polymer is ≥80 ℃.The first polymer of low Tg is resistant to water and oil, but the heat resistance is generally, mainly plays the role of bonding, high Tg second polymer is resistant to oil and not resistant to water, mainly plays the role of heat resistance and improves electrolyte wettability, and by the interaction of first crosslinking structure and second crosslinking structure, so that binder simultaneously has excellent water and solvent resistance and heat resistance, and the affinity of electrolyte is better.
Owner:SHENZHEN HAODYNE TECH CO LTD

Automobile essence for removing formaldehyde and releasing negative ions and preparation method thereof

The invention relates to the technical field of automobile essence preparation, and particularly discloses automobile essence capable of removing formaldehyde and releasing anions and a preparation method of the automobile essence. Comprising the following raw materials in parts by weight: 500-600 parts of deionized water, 18-24 parts of a negative ion release enhancing component, 12-20 parts of an aldehyde removing component, 30-40 parts of absolute ethyl alcohol, 8-14 parts of a dispersing agent, 14-18 parts of phenoxyethanol, 22-26 parts of an initiator solution and 6-10 parts of citral. A negative ion release enhancing component and a formaldehyde removal component are added, the negative ion release enhancing component is prepared by modifying core-shell particles with a silane coupling agent, the outer layer of each core-shell particle is of a porous titanium dioxide structure, the inner core of each core-shell particle is modified electrical powder, and the formaldehyde removal component is prepared by carrying out a ring-opening esterification reaction on sodium alginate and allyl glycidyl ether, so that the formaldehyde removal effect is improved. And then carrying out chemical cross-linking with hydroxypropyl acrylate and methacrylic acid, thereby coordinating and enhancing the formaldehyde removal capability, the anion release capability and the antibacterial effect.
Owner:YUANYANGXING (CHONGQING) HEALTH TECHNOLOGY CO LTD

Corrosion and scale inhibition integrated fracturing fluid

The application discloses a kind of corrosion and scale integrated fracturing fluid, and relates to fracturing fluid technical field.The fracturing fluid includes thickening agent, crosslinking agent, composite corrosion and scale inhibitor and water;The composite corrosion and scale inhibitor includes the first component and the second component with mass ratio of 3:0.5~1, wherein the first component is prepared by the reaction of polyethyleneimine, long-chain acrylate monomer, acrylic acid monomer and hydroxyethyl acrylate monomer, and the second component is prepared by imidazole compound containing a primary amine and glyoxylic acid.The corrosion and scale integrated fracturing fluid of the application has good compatibility between components, and at the same time, it has good corrosion and scale inhibition and anti-sloughing performance.
Owner:XINJIANG RAND WEIYE OILFIELD SERVICE CO LTD +1

In-situ water-preserved mining method for high-salt high-pressure-bearing bottom plate aquifer

The invention discloses an in-situ water-preserved mining method for a high-salt high-pressure-bearing bottom plate aquifer, and relates to the technical field of coal mining. The method comprises the steps that the damage depth of a bottom plate, the height of a confined water guide rising zone and the thickness of a minimum safe water-resisting layer are calculated according to geological and mining technical parameters; adjusting according to a preset water-preserved mining condition to enable the working face to meet the water-preserved mining condition; calculating to obtain the grouting thickness of the corrosion-resistant material; corrosion-resistant acrylate grouting liquid is injected from the upper edge of the confined water guide rising zone according to the grouting thickness of the corrosion-resistant material; monitoring the water pressure of a bottom plate aquifer and the height of a confined water guiding and rising zone, and when a preset risk condition is exceeded, determining that the working face has a water-preserved mining failure risk, and performing risk early warning; and when risk early warning occurs, secondary grouting is carried out according to the grouting thickness of the corrosion-resistant material. A chemical corrosion resistant acrylate grouting liquid is injected into the upper edge of a confined water guiding and rising zone, and gradual corrosion damage and bottom plate water inrush of a rock stratum under the action of high-salinity and high-confined water are prevented.
Owner:CHINA UNIV OF MINING & TECH

Low-residue lithium battery positive electrode tab film adhesive material and preparation method thereof

The invention discloses a low-residue lithium battery positive electrode tab film adhesive material and a preparation method thereof, and belongs to the technical field of lithium battery auxiliary materials. The preparation method comprises the steps of copolymer synthesis, premixing, filler dispersion, crosslinking system introduction and defoaming, and coating and packaging, the copolymer is prepared by norbornene, hexafluorobutyl acrylate and maleic anhydride free radical copolymerization, and fluorinated hyperbranched polyester is subjected to ester exchange and epoxy ring opening one-step functionalization. Aiming at the problems of high high-temperature residue, weak interface adhesion and poor electrolyte resistance of the existing adhesive, the invention designs that a fluorine-containing copolymer with high thermal stability and high reaction activity is taken as a main body and is matched with a reactive compatibilizer to construct a strong chemical bonding interface, and a hyperbranched stabilizer with double functions of physical binding and chemical chelation is introduced, so that the adhesive is prepared. The tab adhesive film bonding material with ultralow residue, ultrahigh peel strength and excellent electrolyte resistance is successfully prepared, and the long-term reliable sealing requirement of a high-energy-density lithium battery can be met.
Owner:XIAMEN KEAISI PLASTICS TECH

Copper-molybdenum tailing-based alkali-activated cementing material and preparation method thereof

The invention belongs to the technical field of solid waste resource utilization and building materials, and particularly relates to a copper-molybdenum tailing-based alkali-activated cementing material and a preparation method thereof. The copper-molybdenum tailing-based alkali-activated cementing material comprises a solid waste dry blend, an alkali activator solution, a silicone acrylic emulsion and modified nano silicon dioxide, wherein the solid waste dry blend consists of the following components in parts by mass: 50-70 parts of copper molybdenum tailings; 10-30 parts of an auxiliary calcium material; and 10-20 parts of a silicon-aluminum correction material. According to the method disclosed by the invention, a large amount of copper-molybdenum tailings can be consumed, and the cementing material with excellent mechanical properties and good stability is prepared.
Owner:NORTHEASTERN UNIV CHINA

Ceramic fiber reinforced composite aerogel material and preparation method thereof

The invention relates to the field of composite materials, and discloses a ceramic fiber reinforced composite aerogel material and a preparation method thereof.The ceramic fiber reinforced composite aerogel material is prepared from ceramic fibers, fumed silica, an aerogel precursor, modified aerogel powder and other raw materials through a sol-gel combined special drying technology; the flame-retardant fireproof coating is formed by spraying and curing slurry prepared from potassium silicate, silicone acrylic emulsion, modified ammonium polyphosphate, pentaerythritol, aluminum hydroxide, expanded vermiculite and fumed silica, and modified aerogel powder is prepared by dipping a silicon dioxide precursor solution into reduced graphene oxide aerogel; the modified ammonium polyphosphate is prepared by synergistically assembling activated ammonium polyphosphate and chitosan, combining with mercaptopropyltrimethoxysilane and then grafting octavinyl-POSS (Polyhedral Oligomeric Silsesquioxane). The prepared ceramic fiber reinforced aerogel material has the characteristics of high temperature resistance, light weight and high strength; the flame-retardant fireproof coating improves the antifouling self-cleaning effect, the fire endurance and the heat insulation performance of the material.
Owner:DONGGUAN SEUNGHO NEW MATERIAL CO LTD

Resins for digital light processing 3D printing

A resin for grayscale digital light processing 3D printing includes a donor moiety, an acceptor moiety, a rigid moiety, a photoinitiator, and a photoabsorber. The donor moiety is an acrylate monomer with a side group of a free carbonyl, a primary amine on an acrylate, a secondary amine on an acrylate, and / or a tertiary amine on an acrylate. The acceptor moiety is different than the donor moiety and is an acrylate monomer with a side group of a free hydroxy, a primary amine, secondary amine, and / or an imine. And the rigid moiety is acrylate monomer with a side group of a cyclohexyl, a substituted cyclohexyl, or a bicyclic structure. A monolithic structure formed from the resin using grayscale digital light processing 3D printing can have a Young's modulus ranging from 0.1 MPa to 100 MPa.
Owner:GEORGIA TECH RES CORP +1

Quantum dot composition, cured film, and display device

Provided are a quantum dot composition, a cured film, and a display device. The quantum dot composition comprises I-III-VI-based quantum dots, wherein the I-III-VI-based quantum dots have two or more types of ligands, and the ligands include: a first ligand that is a reaction product between an aminothiol-based compound and a (meth) acrylate-based compound; and a second ligand that is a metal halide-based compound.
Owner:SAMSUNG SDI CO LTD

Ultraviolet-cured low-refractive-index UV resin and preparation method thereof

PendingCN121427034AEpoxyPolymer science
The invention provides an ultraviolet-cured low-refractive-index UV resin and a preparation method thereof, and the preparation method comprises the following steps: A) mixing epoxy resin, fluorine-modified binary acid, a first catalyst, an antioxidant and a polymerization inhibitor, and carrying out a reaction to obtain a first product; b) mixing the first product, modified acrylate and a coupling agent, and reacting to obtain a second product; and C) mixing the second product with a modified acrylate monomer to obtain the UV-cured low-refractive-index UV resin. The perfluoropolyether and the silicon-containing hydroxyl acrylate are modified, so that the problems of poor compatibility, non-transparent paint film and the like caused by directly grafting the perfluoropolyether and the silicon-containing hydroxyl acrylate into a structural system are greatly improved, and the perfluoropolyether and the silicon-containing hydroxyl acrylate have obvious advantages in the application direction with requirements on the transparency of the paint film. The stability of the resin can be improved, so that the resin is not prone to gelling during production, and the problems of layering and the like are not prone to occurring during use.
Owner:NANXIONG YALTON CHEM CO LTD

Nanometer composite viscosity reducer, preparation method, application and high-viscosity thick oil viscosity reduction method

The invention relates to the technical field of oilfield chemistry, in particular to a nano-composite viscosity reducer, a preparation method, application and a high-viscosity thick oil viscosity reduction method. According to the preparation method, the nano composite viscosity reducer is prepared from a surface-modified nano oxide and an amphiphilic polymer through a solvent exchange method; the nano oxide is nano silicon dioxide nano particles, zinc oxide nano particles or ferric oxide nano particles, and the amphiphilic polymer is a partial esterification product of a styrene-maleic anhydride copolymer or an octadecyl acrylate-methacrylic acid copolymer. According to the preparation method, the viscosity reducer not only can efficiently disassemble a colloid asphaltene network structure, but also has a certain catalytic modification function, does not influence subsequent treatment of crude oil, and has the advantages of high viscosity reduction efficiency, lasting effect, no formation of stable emulsion, shear resistance, good temperature resistance, strong universality and the like.
Owner:KARAMAY SANDA NEW TECH

Temporary plugging agent for fracturing acidification and preparation method thereof

The application belongs to the technical field of oil exploitation, and particularly relates to a temporary plugging agent for fracturing acidification and a preparation method thereof. The preparation method is as follows: in a reactor, itaconic acid, p-styrene sulfonic acid, 2-allyloxy methyl-2-hydroxymethyl propane-1,3-diol, vinyl pyridine, pentaerythritol diacrylate, buffer salt and deionized water are sequentially added, stirring is conducted, the pH value is adjusted, and all raw materials are completely dissolved; an initiator is added from a high-position dropping tank, the reaction is automatically heated, the reaction is kept, a reducing agent is added, the reaction is terminated, the pH value is adjusted, and a temporary plugging agent solution is obtained; the temporary plugging agent solution is dried and granulated to obtain the product temporary plugging agent. The preparation method has the characteristics of simple synthesis process and no by-products; the temporary plugging agent has the advantages of large water absorption, large plugging strength, high breakthrough pressure, self-degradation and designable degradation time.
Owner:DONGYING SPRING PETROLEUM ENG TECH

High-adhesion composite adhesive

The invention relates to a high-adhesion composite adhesive and a preparation method thereof, and belongs to the technical field of adhesives. The high-adhesion composite adhesive is prepared from the following components in parts by weight: 34 to 45 parts of acrylate emulsion, 20 to 26 parts of reactive monomer, 5 to 8 parts of modified carboxylic butadiene-styrene latex, 1.0 to 1.5 parts of photoinitiator, 0.1 to 0.3 part of silane coupling agent, 0.2 to 0.5 part of antioxidant, 0.3 to 0.5 part of defoaming agent and 20 to 28 parts of deionized water. The composite adhesive prepared by the invention realizes double improvement of film forming uniformity and phase stability by virtue of a multi-component synergistic effect, and the problems of layering and debonding are not easy to occur after long-term use.
Owner:GUANGDONG CHAOBA DAILY NECESSITIES MANUFACTURING CO LTD

COMPOSITIONS INCLUDING AN ORGANOSILICONE POLYMER AND A FILM-FORMING AGENT IN THE AQUEOUS PHASE

COMPOSITIONS INCLUDING AN ORGANOSILICONE POLYMER AND AN AQUEOUS-PHASE FILM-FORMING AGENT. The invention relates to compositions including (a) water, (b) at least one oil, (c) at least one organosilicone polymer selected from a silicone acrylate copolymer, a glycerol silicone resin, and combinations thereof; and (d) at least one aqueous-phase film-forming agent, such as a copolymer including a vinyl pyrrolidone monomer. Skin-makeup processes are also proposed. Figure for abstract: none
Owner:LOREAL SA

An acrylic emulsion with a core-shell structure, its preparation method and application

This invention provides an acrylic emulsion with a core-shell structure, its preparation method, and its application. The acrylic emulsion with a core-shell structure includes a core and a shell. The raw materials for preparing the shell include a first acrylate monomer, an olefinic unsaturated acid monomer, an anionic emulsifier, a free radical initiator, and a neutralizing agent. The raw materials for preparing the core include a second acrylate monomer, a catalyst, an oxidizing agent, and a reducing agent. Since no acrylamide monomers are added to the monomers used in preparing the acrylic emulsion, the resulting acrylic emulsion is non-neurotoxic and will not harm human health. Furthermore, the specific core-shell structure allows the acrylic emulsion to have a suitable viscosity after being mixed with inorganic powders such as cement, preventing rapid gelation and facilitating construction.
Owner:SUILUN TECH (SHANGHAI) CO LTD

High-thermal-conductivity self-adhesion thermal interface material and preparation method thereof

The invention discloses a high-thermal-conductivity self-adhesion thermal interface material and a preparation method thereof, and is characterized in that polylipoic acid (polyTA) formed by high-temperature ring opening polymerization of lipoic acid (LA) is used as a dynamic reversible polymer matrix, the dynamic reversible polymer matrix has the characteristics of recoverability, self-healing and adhesion due to the inherent dynamic property of disulfide bonds, a spherical thermal conductive filler is modified by a polyphenol compound, and the high-thermal-conductivity self-adhesion thermal interface material is prepared. Polyhydroxy functional groups are given, the surface energy is reduced, meanwhile, certain viscosity is achieved, polyethylene glycol diacrylate is added to serve as a stabilizer, ferric iron salt is evenly stirred and mixed, the reaction time is controlled, and a stable cross-linked network system is constructed. Hydroxyl groups on the surface of the polyphenol-decorated heat-conducting filler and carboxyl groups in polylipoic acid are subjected to esterification reaction, and meanwhile, Fe < 3 + > and the carboxyl groups in the polylipoic acid form supramolecular coordination, so that uniform dispersion and stable bonding of the filler in a matrix are realized, the interface thermal resistance is remarkably reduced, and a continuous heat-conducting passage is formed. The preparation method of the thermal interface material is simple in process, and the thermal interface material has high thermal conductivity and self-adhesion, has soft elasticity and is suitable for various application fields needing efficient thermal conduction and interface thermal management.
Owner:JIANGSU OCEAN UNIV