231 results about "Graft polymer" patented technology

The invention relates to the field of civil engineering waterproof materials, in particular to a nano bentonite-polymer composite material with high salt tolerance and a preparation method thereof, and the nano bentonite-polymer composite material is especially suitable for a sodium-based bentonite waterproof blanket in a saline soil area or a marine environment, and the preparation method comprises the following steps: (1) preparing nano bentonite lamellar colloidal dispersion liquid; (2) introducing and mixing an electrostatic screening agent and a polymerizable monomer; (3) carrying out in-situ free radical polymerization reaction; and (4) post-treatment and finished product preparation. By constructing a three-dimensional interpenetrating hierarchical structure composed of a covalent grafted polymer network, a physically anchored electrostatic screening agent and a stripped bentonite nanosheet layer, effective protection of a bentonite core anti-seepage unit is realized, so that the adaptability and long-term stability of the material under a complex water quality condition are remarkably improved.

The invention provides a modified chitosan flocculant for slime water treatment. The modified chitosan flocculant is prepared from the following raw materials: chitosan, dimethyl diallyl ammonium chloride, acrylamide, acetic acid and potassium persulfate. The invention also provides a preparation method of the modified chitosan flocculant for slime water treatment. The preparation method comprises the following steps: dissolving chitosan in a dilute acetic acid solution with the mass concentration of 60%, and stirring; adding acrylamide and dimethyl propyl chloride cyclic amine into the mixed solution, uniformly stirring, adding a potassium persulfate solution with the mass concentration of 4%, and introducing nitrogen for 20 minutes; then carrying out microwave reaction, and cooling to room temperature after the reaction is completed; adding absolute ethyl alcohol, centrifuging for 10 minutes, taking out, and continuously soaking in absolute ethyl alcohol for 12 hours, so as to obtain a final insoluble substance which is a graft polymer CS-g-ADM; and drying the polymer in a drying box at 105 DEG C until no weight loss occurs, and then grinding and storing. The flocculating agent disclosed by the invention has relatively good flocculability.

The invention provides an automotive bacteriostatic polypropylene-based wood-plastic composite material and a preparation method thereof, the automotive bacteriostatic wood-plastic composite material comprises the following raw materials by mass: 90 parts of a polypropylene matrix, 20-40 parts of modified plant fiber, 5-20 parts of an inorganic filler, 1-3 parts of a lubricant, and 0.1-2 parts of an antioxidant; the modified plant fiber comprises plant fiber grafted with a graft polymer and loaded with a pyridine antibacterial agent, and the graft polymer comprises a polyunsaturated carboxylic acid chain segment and a polypropylene chain segment. The modified plant fiber has good compatibility with a polypropylene matrix and can be used for preparing a wood-plastic composite material, so that the mechanical property, the interface stability and the long-term antibacterial property of the composite material are remarkably improved.

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 relates to the field of 3D printing, and particularly discloses high-toughness and high-tack polyester for 3D printing and a preparation method thereof.The polyester is prepared from, by mass, 0.2-3% of antioxidant, 0.1-3% of dispersing agent and the balance matrix resin; the matrix resin comprises the following raw materials: binary acid, dihydric alcohol, a graft polymer, a catalyst and a protective agent. According to the polyester, a graft polymer containing active groups such as hydroxyl is introduced into matrix resin, so that the melt uniformity of a whole blending system is improved, the interface energy is reduced, a polyester molecular chain is easier to cross an interlayer interface to move and entangle, stronger physical connection is formed, layers are easier to bond and do not crack during 3D printing, and the 3D printing performance is improved. The adhesive has excellent interlayer adhesive force, meets the application requirement of high additional value in the field of industrial-grade 3D printing, and can be used in the fields of outdoor artware, construction industry, aerospace, medical instruments and the like.

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.

The invention relates to the technical field of immunochromatography, in particular to time-resolved fluorescent microspheres, a preparation method and application of the time-resolved fluorescent microspheres in PSP / CRP / MxA quantitative detection immunochromatography test strip, and the preparation method of the time-resolved fluorescent microspheres comprises the following steps: 1) preparing surface aminated polystyrene microspheres; (2) carrying out glutaraldehyde crosslinking and 1, 10-phenanthroline-5-amino combination; 3) grafting a rare earth fluorescent dye on the surface; and 4) coating a polymer shell layer and modifying carboxyl. According to the invention, through a dual fixation strategy of surface grafting and polymer coating, the time-resolved fluorescent dye is confined to a functional region between the surface of the microsphere and a polymer shell layer, diffusion and leakage of dye molecules to the external environment are blocked, and the problem of dye shedding of traditional fluorescent microspheres is solved; the polymer shell layer can effectively isolate external ultraviolet light, oxygen and other corrosive factors, reduce photooxidative degradation and non-radiative transition loss of fluorescent molecules, and improve the light stability and fluorescent lifetime of the fluorescent molecules.

The invention belongs to the technical field of lithium battery negative electrode interface modification, and discloses a multifunctional two-dimensional hybrid polymer artificial SEI membrane and a preparation method and application thereof. Comprising a compound as shown in a formula I, a polymer brush is grafted on the surface of brominated graphene oxide through atom transfer radical polymerization (ATRP), monomers of the polymer brush are carboxyl-containing monomers and fluorine-containing monomers, and the artificial SEI membrane is constructed through spin coating and membrane forming. The multifunctional artificial SEI film provided by the invention has the structural and functional characteristics of two-dimensional graphene oxide and in-situ reaction type macromolecules, the mechanical property of the film can be remarkably improved by an accumulated two-dimensional skeleton, the Young modulus can reach 3.7 GPa, the growth of lithium dendrites is inhibited, and the performance of the film is improved. Functional groups (carboxyl and fluoro) in the hybrid polymer brush and lithium metal are subjected to in-situ chemical reaction, so that the electrode interface stability and the lithium deposition uniformity are improved, and the hybrid polymer brush has wide application prospects in the field of lithium batteries.

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.

The application provides a carbon nanotube grafted polymer nano plugging agent, a preparation method thereof and a prepared drilling fluid, and the preparation method comprises the following steps: S1, reacting acrylic acid and amino functionalized multi-walled carbon nanotubes in a mass ratio of 1:0.1-0.2 to generate acrylic acid modified carbon nanotubes; and S2, performing a copolymerization reaction on acrylamide, the acrylic acid modified carbon nanotubes and octadecyl dimethyl allyl ammonium chloride in a mass ratio of 25:0.2-0.8:1.2-2.0 to obtain the carbon nanotube grafted polymer nano plugging agent. The carbon nanotube grafted polymer nano plugging agent comprises an amide group, a quaternary ammonium salt structure and an amino group, enhances the micro-nano plugging capacity of the plugging agent, enhances the inhibition capacity of the plugging agent to the hydration expansion and dispersion of formation mud shale, and has good temperature resistance, salt resistance and dispersion stability.

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.

The invention belongs to the technical field of heavy oil sewage biochemical treatment, and discloses a heavy activated sludge process anaerobe nutritional agent and application thereof, the nutritional agent comprises a component A and a component B, the component A is citric acid monohydrate, the content of the component A is 114-125g / L; the component B is ammonium phosphate with the content of 57-69g / L; the component C is glycerol with the content of 185 to 196g / L; the component D is 35 to 42g / L of starch-acrylamide graft polymer; the component V is a mixture of alpha-transglucosidase and alpha-amylase; the content is 1.3-1.5 g / L, the component is coal powder granular active carbon, and the solvent is water. The components of the preparation are non-toxic components, the organic components are degradable components, the preparation belongs to an environment-friendly product, the main components are stabilized in the form of comprehensive technologies such as net crosslinking and activated carbon adsorption, the effects of the main components are not affected, production is convenient and fast, the preparation is stable, reproduction of exopolysaccharide producing bacteria is facilitated, and meanwhile the efficiency of various microorganisms can be improved in a targeted mode.

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.

The invention provides a composition for treating diabetes as well as a preparation method and application thereof, and belongs to the technical field of medicines. The preparation method comprises the following steps: loading berberine on a milk exosome to prepare a berberine-loaded exosome, loading liraglutide on phycobiliprotein to prepare liraglutide-loaded phycobiliprotein, preparing PEG-COOH, reacting with chitosan to prepare a chitosan-polyethylene glycol graft polymer, embedding the berberine-loaded exosome and the liraglutide-loaded phycobiliprotein, and cross-linking to prepare microspheres. And centrifuging, washing and drying to obtain the composition for treating diabetes. According to the prepared composition for treating diabetes, the loading capacity of the medicine is greatly improved, the carrier also has a very good protection effect on islet cells, so that islet cell injury is repaired, normal insulin secretion of islet cells is promoted, the prepared composition can be orally taken, the medicine effect is greatly improved, the compliance of patients is improved, and the preparation method is suitable for clinical application. The bioavailability is high, and safety and non-toxicity are realized.

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 present invention provides a novel graft polymer composition which contains a graft polymer of cellulose acetate and a lactone and which achieves both excellent thermoplasticity and suppression of bleed out.　Provided is a polymer composition which contains a graft polymer of cellulose acetate and a lactone, wherein the proportion of a methanol-soluble material of the polymer composition as measured via the method below is in the range of 13-33 mass%. (Method for measuring proportion of methanol-soluble material) Under atmospheric pressure, in a 20°C environment, acetone is dissolved in 144 ml with respect to 24 g of the polymer composition, 1.5 L of methanol is added, and stirring is carried out for 12 hours. A mixture thus obtained is filtered with a PTFE membrane filter having a pore diameter of 1 μm, and a filter residue is collected. The obtained filter residue is put into 0.5 L of methanol again, and stirring is carried out for 1 hour. A mixture thus obtained is filtered with a PTFE membrane filter having a pore diameter of 1 μm, and a filter residue and a filtrate are collected. The obtained filter residue is put into 0.5 L of methanol again, and stirring is carried out for 1 hour. A mixture thus obtained is filtered with a PTFE membrane filter having a pore diameter of 1 μm, and a filter residue and a filtrate are collected. After the pH of the filtrate is confirmed to be 7, the filter residue is added to 1 L of methanol, and stirring is carried out for 12 hours. A mixture thus obtained is filtered with a PTFE membrane filter having a pore diameter of 1μm, and a filter residue is collected. The obtained filter residue is dried at 40°C for 12 hours in a vacuum, and a dry mass is thus obtained. From the dry mass of the polymer composition before purification and the dry mass of the polymer composition after the purification, the proportion of the methanol-soluble material contained in the polymer composition is calculated. Methanol-soluble component of polymer composition = dry mass of polymer composition before purification - dry mass of polymer composition after purification Proportion of methanol-soluble material contained in polymer composition = (mass of methanol-soluble component of polymer composition) / dry mass of polymer composition after purification × 100 (mass%)

The invention provides a film-coated metal plate, a preparation method and a roof. The film-coated metal plate comprises a surface polymer layer, the first adhesive layer is positioned on one side of the surface polymer layer; the metal layer is positioned on one side, far away from the surface polymer layer, of the first adhesive layer; the anti-corrosion bottom layer is located on the side, away from the first adhesive layer, of the metal layer, and the surface macromolecule layer comprises polyvinyl chloride; the first adhesive layer comprises PES copolyester, an ethylene-ester copolymer, a maleic anhydride graft polymer, a thermoplastic elastomer and a first additive; the anti-corrosion bottom layer comprises polyolefin, and a second adhesive layer is arranged between the anti-corrosion bottom layer and the metal layer. The film-coated metal plate has at least one of the advantages of environment friendliness, relatively strong bonding force between the surface polymer layer and the metal layer and the like.

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.