145 results about "Graft polymer" patented technology

The invention discloses a hydrogen energy fuel cell catalyst carrier based on a graphene graft polymer, which is characterized in that two-dimensional graphene is used as a substrate, the surface of the two-dimensional graphene is modified with an oxygen-containing functional group, and a functional polymer branch chain containing nitrogen, sulfur or phosphorus heteroatoms is covalently grafted to form a local three-dimensional network winding structure; the carrier is loaded with platinum, palladium, ruthenium and other metal or alloy nanoparticles, the particle size is 2-8 nm, the loading capacity is 10%-40%, and the particles are anchored to polymer functional sites or reduced in situ to a graphene defect area through coordination. A polymer branch chain has pH responsiveness and can adjust the local proton transmission efficiency; the grafting density is 3-15 grafting points per 100 carbon atoms, so that high dispersion and stable anchoring of metal particles are effectively realized; the specific surface area of the carrier is 400-800m < 2 > / g, the electrochemical active area is not less than 80m < 2 > / g, and the activity retention rate is greater than 80% after 5000 circles of accelerated durability tests. The activity, the stability and the proton conduction performance of the catalyst are remarkably improved, and the catalyst is suitable for high-performance fuel cells.

The invention belongs to the technical field of environment-friendly materials, and particularly relates to a bamboo-based composite material and a preparation method thereof.The bamboo-based composite material is composed of a biodegradable resin matrix, multi-scale bamboo fiber filler and the like, and the core of the bamboo-based composite material is that micron, submicron and nanometer three-level bamboo fibers are adopted to construct a multi-scale reinforced network, and a nanometer carbon reinforced phase material is adopted for assistance; through a reaction type interface modifier system containing a maleic anhydride grafted polymer and the like, strong chemical bonding of fibers and a resin matrix is achieved, interface compatibility is remarkably improved, the material selects PBS, PBAT, PLA and other matrixes, a plasticizer and a functional auxiliary are combined, excellent biodegradability is kept, meanwhile, high mechanical strength and good processing performance are achieved, and the material is suitable for industrial production. The composite material is an ideal green and environment-friendly material, the material still keeps excellent mechanical properties when the total amount of the bamboo fibers reaches 60 parts through the synergistic effect of the three-scale fibers, and the tensile strength can reach 50 MPa to 65 MPa and is improved by 180% or above under the same filling amount compared with the prior art.

The invention relates to preparation of hydrolyzed keratin capable of maintaining hair and application of the hydrolyzed keratin in shampoo. The shampoo capable of maintaining the hair and the keratin is prepared by compounding a surfactant, a modified silicone oil graft polymer, the hydrolyzed keratin and polydimethylsiloxane. According to the modified silicone oil graft polymer, hydrophilic sodium acrylate and hydrophobic N-vinyl pyrrolidone and acrylic ester are introduced into vinyl silicone oil, and N-vinyl pyrrolidone and acrylic ester can be adsorbed on the inner side of the hair surface; sodium acrylate with hydrophilicity is located on the outer side of the surface of the hair due to electrostatic repulsion between the negatively-charged hair and generates hydration with water molecules on the surface of the hair to form a water shell protection layer, so that the sodium acrylate can be more uniformly distributed on the hair to form an effective protection film, and during washing, the water washing property is greatly enhanced by the hydrophilic part of the sodium acrylate; non-specific deposition and residues in a scalp area are remarkably reduced, and the washed hair can be moisturized and lubricated.

The invention discloses a graft polymer and a preparation method and application thereof.The graft polymer comprises a structural unit I from graphene oxide, a structural unit II from a monomer A and a structural unit III from a monomer B. The value of the carbon element and the oxygen element of the graphene oxide is not larger than 2.5; the monomer A is a monomer containing a sulfonic acid group; the monomer B is a propenyl monomer containing a rigid group; the viscosity average molecular weight of the graft polymer is 75,000 to 120,000. The graft polymer disclosed by the invention can be used as an ultrahigh-temperature salt-resistant shear strength improving agent for water-based drilling fluid, the temperature resistance can reach 240 DEG C or above, the salt resistance can reach saturation, and the influence on the plastic viscosity of the drilling fluid is less while the shearing force of the drilling fluid is increased.

To provide a toner that achieves both low-temperature fixation and storage stability in high-temperature environments. [Solution] A toner containing a graft polymer resin including a polyolefin resin and a styrene-based resin, a polyester resin, and a release agent, wherein when the toner heated to 50°C is measured by FTIR-ATR (total internal reflection absorption infrared spectroscopy), the peak intensity derived from the release agent is set to Wk-50 and the peak intensity derived from the polyester resin is set to RK-50; when the toner heated to 70°C is measured by FTIR-ATR, the peak intensity derived from the release agent is set to Wk-70 and the peak intensity derived from the polyester resin is set to RK-70; and when the toner heated to 90°C is measured by FTIR-ATR, the peak intensity derived from the release agent is set to Wk-90 and the peak intensity derived from the polyester resin is set to RK-90, the toner satisfies the following formulas (1) and (2). (Wk-70 / RK-70) / (Wk-50 / RK-50)≦1.1···(1) 1.5≦(Wk-90 / RK-90) / (Wk-50 / RK-50) (2)

The present invention relates to a thermoplastic resin composition including: a base resin including a diene-based graft polymer and a vinyl-based non-grafted polymer including an aromatic vinyl-based monomer unit and a vinyl cyanide-based monomer unit; and an additive including an olefin-based non-grafted polymer including an olefin-based monomer unit, a (meth)acrylate-based monomer unit, and a maleic acid-based monomer unit.

A resin composition includes a coloring material, a resin, and a solvent. The resin includes a graft polymer which has a main chain including a molecular chain having a structure derived from a compound having an ethylenically unsaturated bond-containing group and a graft chain, and the graft chain includes a repeating unit p1 having an oxetane group. The resin composition may be employed in a film formed of the resin composition; an optical filter; a solid-state imaging element; and an image display device.

To provide an electrophotographic photoreceptor, process cartridge, and image forming apparatus that offer excellent wear resistance and can suppress image blurring. [Solution] The electrophotographic photoreceptor comprises a conductive substrate, a photosensitive layer, and a protective layer. The photosensitive layer is provided on the conductive substrate. The protective layer is provided on the photosensitive layer. The protective layer has a substrate made of a graft polymer having the composition of a UV (ultraviolet) curable polyfunctional monomer, a photopolymerization initiator, and a photoreactive group-containing substance, n-type conductive fine particles dispersed in the substrate, and metal oxide fine particles dispersed in the substrate, and has a Martens hardness of 400 N / mm². 2 The above and the volume resistivity is 1.0 × 10⁻⁶ 10 It is greater than or equal to Ω·cm.

This invention relates to edge adhesive for positive electrode sheets, coating compositions, positive electrode sheets, and batteries, belonging to the field of lithium-ion battery technology. The technical problem solved by this invention is to provide an edge adhesive for positive electrode sheets. This edge adhesive comprises an oil-soluble polymer with a flexible polymer as the main chain and a polar polymer as the branch chain. The edge adhesive of this invention has good adhesion to metal foils and a hot-pressing bonding effect on olefin separators. Without changing existing processes and equipment, the edge adhesive composition is simultaneously applied to the edge of the positive electrode sheet during coating, completely avoiding burrs and powder shedding. In the subsequent hot-pressing and shaping of the battery cell, this coating composition can firmly bond the electrode sheet and separator together, maintaining the flatness of the electrode assembly and preventing electrode misalignment during battery vibration, which can reduce the risk of short circuits in the battery cell and improve the overall safety and electrochemical performance of the battery.

Embodiments relate to a multilayer structure including an adhesive layer and, in direct contact therewith, a layer forming a support film, in which the adhesive layer includes a polyolefin A and a functionalized polyolefin and has a melting temperature of between 80° C. and 120° C., and in which the support film includes a polyamide graft polymer and has a flow temperature of greater than 160° C. Embodiments also relate to a process for manufacturing same, to the use of such a multilayer structure for manufacturing photovoltaic modules and to a process for manufacturing such modules, and also to these photovoltaic modules per se.

The invention relates to the field of materials, and discloses a low-temperature-resistant fluororubber heat-shrinkable sleeve and a preparation method thereof. The low-temperature-resistant fluororubber heat-shrinkable sleeve is prepared by taking fluororubber, an ethylene-ethyl acrylate copolymer, a nano magnesium hydroxide flame-retardant graft and an attapulgite graft as main raw materials and an antioxidant, a lubricant and the like as auxiliary materials through the processes of mixing, extrusion, irradiation, expansion and the like. Wherein the nano magnesium hydroxide flame-retardant graft is obtained by carrying out surface phosphorus-silicon modification on nano magnesium hydroxide by using triphenyl isocyanate thiophosphate and 2-amino-1-(butyldimethylsiloxy) butane, and has an efficient flame-retardant effect; the attapulgite graft is formed by grafting attapulgite to a polymer, agglomeration is prevented, the low-temperature resistance can be better exerted, and the finally prepared heat-shrinkable sleeve has low-temperature resistance and flame retardance.

This disclosure provides a process. In one embodiment, the process includes providing an apparatus. The apparatus includes (A) a passage having an interior for receiving a first flowstream (FFS1) containing a molten polymer composition, the passage having an inlet end and an outlet end on the opposite side. The apparatus includes (B) (i) a housing, (ii) a gear chamber within the housing, and (iii) an inlet that fluidizes the outlet end of the passage to the gear chamber, with a width (I w The apparatus includes a gear pump assembly having an inlet having (iv) a plurality of meshing gears mounted to rotate within a gear chamber, the gears having teeth that engage with each other within the chamber, and (v) an outlet that is in fluid communication with the gear chamber. The apparatus includes (c) one or more injectors upstream of the gear pump assembly for adding a second fluid to a first flow stream. The second fluid consists of radical-graftable species and peroxides. The peroxides have an activation temperature. The injectors are located upstream of the inlet. The process includes introducing the second fluid from each injector into the FFS1 at a location upstream of the inlet, and supplying the FFS1 and the second fluid into the inlet. The process includes mixing the second fluid with the FFS1 in the gear chamber to form a mixed fluid flow stream (mFFS), discharging the mFFS from the outlet into a curing chamber, and grafting radical-graftable species onto a polymer in the curing chamber to form a grafted polymer.

The present invention relates to an aqueous binder for a secondary battery electrode and the use thereof, and belongs to the technical field of battery binders. The technical problem to be solved by the present invention is to provide an aqueous binder for a secondary battery electrode having both flexibility and adhesion performance. The binder comprises a graft polymer, having an acrylonitrile polymer as a main chain, which is grafted with acrylate latex particles, wherein the polymerization monomer of the acrylonitrile polymer comprises an acrylonitrile monomer and an acrylic monomer; and the polymerization monomer of the acrylate latex particles comprises a crosslinking monomer and a non-crosslinking monomer. The aqueous binder of the present invention has good flexibility and high adhesion performance to positive and negative electrodes. Therefore, it can be used in a positive electrode sheet or a negative electrode sheet of a secondary battery, effectively reducing the thickness rebound rate of the electrode sheet after being rolled and leaving to stand for 24 h, and improving the performance of the battery. Furthermore, the aqueous binder is environmentally friendly and has a simple preparation process. Therefore, large-scale and continuous production can be achieved, further reducing production costs and improving production efficiency.

The invention discloses an insulating nano ceramic coating and a preparation method thereof, relates to the technical field of coatings, and belongs to the patent classification number C09D1 / 00. The preparation method comprises the following steps: firstly, carrying out hydroxylation activation and silane modification treatment on nano aluminum oxide and nano zirconium oxide, and grafting polymer chains on the surfaces of the nano aluminum oxide and the nano zirconium oxide through a polymerization reaction to obtain grafted modified nano ceramic powder so as to enhance the dispersity and compatibility of the grafted modified nano ceramic powder in a resin matrix; meanwhile, the acrylic polysiloxane resin is subjected to epoxy modification and is subjected to a cross-linking reaction with 3-aminopropyltriethoxysilane and polyethylene glycol diglycidyl ether, so that resin with a cross-linked network structure is synthesized; and finally, mixing the modified resin, the grafted modified nano ceramic powder, a mixed solvent, polyamide wax, an organic silicon defoaming agent, an acrylate film-forming agent, gamma-aminopropyltriethoxysilane hydrolysate and other auxiliaries, stirring and fusing to obtain the final insulating nano ceramic coating. The nano ceramic coating disclosed by the invention has excellent insulating property.

The invention relates to a fast-curing environment-friendly double-component organic silicon adhesive and a preparation method thereof. The fast-curing environment-friendly double-component organic silicon adhesive is prepared from a component A and a component B, the component A is prepared from the following components in parts by weight: 30 to 60 parts of hydroxyl-terminated polydimethylsiloxane, 30 to 60 parts of inorganic filler, 1 to 10 parts of ethylene propylene diene monomer-polydimethylsiloxane graft polymer, 1 to 5 parts of amino silicon oil, 1 to 5 parts of fumed silica and 0.2 to 1 part of organic base catalyst; the component B is prepared from the following components in parts by weight: 30 to 60 parts of alkoxy-terminated polydimethylsiloxane, 20 to 50 parts of inorganic filler, 1 to 10 parts of color paste, 1 to 5 parts of a bonding accelerant, 5 to 15 parts of a cross-linking agent and 0.2 to 1 part of a titanate catalyst. According to the double-component organic silicon adhesive disclosed by the invention, the hydroxyl-terminated polydimethylsiloxane and the alkoxy-terminated polydimethylsiloxane are cooperated, and the ethylene propylene diene monomer-polydimethylsiloxane graft polymer is introduced, so that the double-component organic silicon adhesive has an unexpected curing effect and an unexpected curing speed.

This application discloses a high-throughput computational method, apparatus, device, and storage medium for grafted polymers based on molecular dynamics simulation, belonging to the field of computational chemistry technology, and capable of solving the problem of the inability to quickly perform simulation calculations of grafted polymers. The method includes: receiving first parameters of at least one grafted polymer to be simulated; generating a corresponding initial model based on the first parameters, wherein the first parameters include at least the main chain length, side chain length, and grafting density; performing molecular dynamics simulation on the initial model according to pre-configured molecular dynamics parameters to obtain the evolution trajectory of the grafted polymer; determining second parameters of the grafted polymer based on the evolution trajectory, wherein the second parameters include at least the mean square radius of gyration and the mean square end-to-end distance of the main chain; and generating corresponding analysis results based on the first and second parameters, wherein the analysis results include at least the parameter combination corresponding to the grafted polymer and a scatter plot corresponding to the parameter combination.

The present invention relates to a process for the preparation of a modified polymer comprising pendant imidazole functional groups, said process comprising a step of grafting, onto a starting polymer comprising at least one unsaturation, a compound comprising an epoxide group, and a step of reacting the grafted polymer obtained at the end of the preceding step with a compound comprising an imidazol group.

The invention discloses a functionalised chromatography medium, comprising: i) at least one non-woven layer (10) of polymeric nanofibres (20) comprising a plurality of nanofibre-nanofibre fusion points (30); ii) a grafted polymer coating covering the polymeric nanofibres and the nanofibre-nanofibre fusion points; iii) a plurality of ligand groups covalently bound to the grafted polymer coating, wherein the ligand groups are capable of interacting with a target biomolecule.

This invention relates to a basalt fiber-reinforced bio-based nylon 56 composite material and its preparation method. By modifying basalt fibers with a dual-monomer-grafted polymer, the treated basalt fibers are combined with environmentally friendly bio-based nylon 56 to prepare the basalt fiber-reinforced bio-based nylon 56 composite material. The dual-monomer-grafted polymer significantly enhances the interfacial bonding force with the matrix, imparting high strength, heat resistance, good dimensional stability, and low cost, thus extending the material's service life. The preparation method of this invention is simple, using environmentally friendly raw materials, and the process parameters are easy to control. Furthermore, the composite material exhibits significant enhancement in mechanical properties, with tensile strength reaching 150 MPa–170 MPa and flexural strength reaching 170 MPa–220 MPa. No large-scale equipment is required, facilitating mass production.

The application discloses a kind of thermal interface material and preparation method thereof, it is related to thermal interface material technical field, thermal interface material includes polyisobutylene base material, low molecular weight polymer, polar graft polymer and inorganic filler;The number average molecular weight of the low molecular weight polymer is 200-3000.This scheme utilizes the characteristics of polar graft polymer and polyisobutylene base material limited compatibility, induces its gradient dispersion on polyisobutylene base material surface, and cooperates low molecular weight polymer as viscous material, reconstructs surface microphase separation structure, to realize accurate control to surface macromolecular chain conformation and mobility, make thermal interface material surface have the dual characteristics of viscosity and plasticity, can self-adaptively fill interface micro-nano gap under low pressure, substantially increase effective contact area, while avoiding stress damage to device, finally realize the preparation of high thermal conductivity low contact thermal resistance thermal interface material.

The present invention relates to a process for preparing a modified polymer comprising functional pendant imidazole groups, said process comprising a step of grafting, onto a starting polymer comprising at least one unsaturation, a compound comprising an epoxide group and a reaction step between the grafted polymer obtained at the end of the previous step and a compound comprising an imidazole group.

This application relates to biodegradable graft polymers comprising nitrogen-containing monomers different to vinyllactams. The graft polymers of the invention comprise a polyalkylene oxide polymer as polymer backbone of the graft polymer and grafted side chains obtained from radically polymerizing at least one vinyl ester, at least one Nitrogen-containing -monomer in amounts of at least weight percent being based on the total weight of the graft polymer, and optionally at least one vinyl lactame and / or at least one further monomer, in the presence of the polymer backbone. 10 The inventive graft polymers exhibit inter alia properties for inhibiting at least one of transfer of dyes, removal of clay, inhibiting re-soiling and anti-greying. As they also are bio-degradable, they are useful polymers for various applications including cleaning applications of all kinds. The invention further relates to the production of such graft polymers. Furthermore, the present invention relates to the use of such a graft polymer within various applications including cleaning applications of all kinds, fabric and home care products, the use of such graft polymers for inter alia for inhibiting at least one of transfer of dyes, removal of clay, inhibiting re-soiling and anti-greying. This invention also relates to compositions such as cleaning composition, fabric and home care products, dish wash compositions and laundry detergents comprising at least one of such graft polymers.

The invention discloses a fluorinated acrylate binder and a preparation method thereof, a solid electrolyte diaphragm and a preparation method thereof, and a solid-state battery, and belongs to the technical field of batteries. The fluorinated acrylate binder is a graft polymer formed by grafting an acrylate monomer on a fluorine-containing polymer molecular chain in a controllable free radical polymerization mode under the action of a chain transfer agent. According to the invention, the fluorine-containing material is adopted to modify the acrylate binder, so that the chemical resistance, thermal stability and mechanical property of the fluorine-containing acrylate binder are improved, and the binder has good ionic conductivity; and by using the prepared binder as the binder for the solid electrolyte diaphragm, the ionic conduction speed of the solid electrolyte diaphragm is promoted, the interface impedance is reduced, and the stable long-term cycle performance and high-temperature performance of a solid-state battery are ensured.

The objective is to obtain a cellophane laminate that has moisture resistance, heat sealability, and dimensional stability at high temperatures and humidity, without the need for anchor coat layers or adhesive layers. [Solution] A cellophane laminate is used, in which a moisture-resistant layer having heat-sealing properties with a thickness of 1.0 to 4.0 μm is provided on both surfaces of a base layer made of cellophane, and this moisture-resistant layer is made of one or more types of resins selected from olefin resins, aliphatic hydrocarbon resins, alicyclic hydrocarbon resins, graft polymers of these resins, and modified versions of these resins.

Disclosed herein is an agrochemical composition including an agrochemical active ingredient and a cleaning composition including cleaning additives, each further including at least one novel graft polymer including a polymer backbone (A) as a graft base having polymeric sidechains (B) grafted thereon. The polymeric sidechains (B) are obtained by polymerization of at least one vinyl ester monomer (B1), and optionally further monomers. The polymer backbone (A) includes polyalkylene-oxide-derived moieties and moieties derived from lactone(s) and / or hydroxy acid(s), those moieties being mixed such that the polymer backbone contains ester-functions within the polymer chains.Also disclosed herein are the graft polymer and its production.

The invention discloses a low-hydrogen-permeation super-tough PA6-based material as well as a preparation method and application thereof, and belongs to the technical field of hydrogen storage materials. The low-hydrogen-permeation super-tough ternary PA6-based material disclosed by the invention is prepared from 60 to 85 percent of PA6 resin, 10 to 30 percent of maleic anhydride grafted polymer, 4 to 15 percent of ethylene-vinyl alcohol copolymer, 0.1 to 0.7 percent of lubricant and 0.2 to 0.8 percent of antioxidant. The low-hydrogen-permeation super-tough quaternary PA6-based material disclosed by the invention is prepared from 60 to 84 percent of PA6 resin, 10 to 30 percent of maleic anhydride grafted polymer, 4 to 12 percent of ethylene-vinyl alcohol copolymer, 1 to 5 percent of organic modified montmorillonite, 0.1 to 0.7 percent of lubricant and 0.2 to 0.8 percent of antioxidant. The low-hydrogen-permeation super-tough PA6 material provided by the invention has excellent normal-temperature and low-temperature impact toughness, excellent hydrogen barrier property, low moisture absorption rate and good dimensional stability, the preparation process is simple, and the cost is relatively low.

The invention relates to the technical field of surfactants, in particular to a lignin derivative-based surfactant system and a detergent containing the lignin derivative-based surfactant system. The lignin derivative-based surfactant system comprises the following components: a component a: a modified lignin derivative; the component b is one or more of an inorganic builder, a compatibility agent, a chelating agent and a dispersing agent; the component c is a scale inhibitor, and the scale inhibitor comprises at least one organic acid; the modified lignin derivative is a grafted polymer modified lignin-based compound. The invention discloses a novel lignin derivative and a detergent containing the lignin derivative. The lignin derivative and the detergent have good degreasing capacity.

The invention discloses a dispersant composition solution and application thereof in preparation of a liquid disperse dye. The dispersant composition comprises a graft copolymer A, a wetting agent B and a defoaming agent C. Wherein the grafted copolymer A is a beta-sodium naphthalene sulfonate or methyl sodium naphthalene sulfonate grafted polymer of sodium lignin sulfonate. The high-efficiency dispersing agent composition solution provided by the invention can be applied to preparation of a liquid disperse dye, the mass ratio of the dispersing agent composition to the disperse dye is (1: 2)-(1: 10), and the solid content of the liquid disperse dye is 30%-50%. Compared with a traditional dispersing agent, the dispersing agent composition has the advantages that the color depth value is obviously reduced, and the contamination to fibers is reduced. The liquid disperse dye prepared by using the dispersant composition shows excellent performance in the aspects of grinding efficiency, reduction hydrolysis rate, high-temperature dispersion stability and the like.

The application provides a vehicle bacteriostatic polypropylene-based wood-plastic composite material and a preparation method. The vehicle bacteriostatic wood-plastic composite material comprises the following raw materials in parts by mass: 90 parts by mass of a polypropylene matrix, 20-40 parts by mass of modified plant fibers, 5-20 parts by mass of inorganic fillers, 1-3 parts by mass of a lubricant, and 0.1-2 parts by mass of an antioxidant. The modified plant fibers comprise plant fibers grafted with a grafting polymer and loaded with a pyridine antibacterial agent, and the grafting polymer comprises a polyunsaturated carboxylic acid segment and a polypropylene segment. The modified plant fibers have good compatibility with the polypropylene matrix and can be used to prepare wood-plastic composite materials, so that the mechanical properties, interface stability and long-term antibacterial properties of the composite materials are significantly improved.

The invention belongs to the technical field of thermoplastic prepreg high-temperature sizing agents, and discloses a bionic graft polymer as well as a preparation method and application thereof, and molecular structure design is carried out by taking aerial roots of a ficus microcarpa as a bionic prototype; polyetherimide PEI is used as a trunk, single-terminated amino polyethylene glycol PEG with different molecular weights and different proportions is used as an aerial root, and polyethylene glycol grafted and modified polyetherimide PEI-g-PEG is synthesized through a chemical reaction and is used as a core effective component of the sizing agent; the problems of poor interface bonding of a resin matrix and reinforced fibers of the resin matrix composite material, many broken filaments in the production process of the hot prepreg, poor bundling property of fiber bundles in the production process of the prepreg and the like are solved, and optimization of a prepreg system is realized.