518 results about "Solution polymerization" patented technology

The invention discloses a hydrophilic polyacrylate / epoxy silica sol composite coating and a preparation method thereof. The composite coating is prepared from a polyacrylate epoxy silica sol solution containing carboxyl and a polyethylene glycol side chain through blending, coating, drying and heating crosslinking. The polyacrylate is synthesized by taking methyl methacrylate, methacrylic acid, hydroxyethyl methylacrylate and allyl polyethylene glycol as comonomers through a solution free radical copolymerization method, and the epoxy silica sol solution is prepared by taking tetraethoxysilane and gamma-glycidoxypropyltrimethoxysilane as raw materials through a solution polymerization method. The composite material is prepared through a sol-gel and core-shell preparation process. The preparation method comprises the following steps: carrying out solution blending on polyacrylate and epoxy silica sol, and carrying out coating, drying and other processes to generate the cross-linked polyacrylate / epoxy silica sol composite coating through a cross-linking reaction between carboxyl and epoxy. The prepared composite coating has the characteristics of long durability, wear resistance, hydrophilicity, antifogging, protein adsorption resistance and the like.

The invention relates to a rubber blend, to a sulfur-crosslinkable rubber mixture comprising the rubber blend and to a vehicle tire comprising such a rubber mixture.The rubber blend comprisesat least one solution-polymerized diene polymer A of high molecular weight andat least one solution-polymerized polymer B of low molecular weight,wherein at least one of polymers A and B has been functionalized at the chain end and / or along the polymer chain and / or at a coupling site with at least one group selected from epoxy groups, hydroxyl groups, carboxyl groups, silane sulfide groups, amino groups, siloxane groups, organosilicon groups, phthalocyanine groups and amino group-containing alkoxysilyl groups.

The invention discloses supercritical fluid foaming polyimide wave-absorbing foam and a preparation method thereof.The thermoplastic polyimide is prepared by the steps that aromatic dianhydride, aromatic diamine and aliphatic diamine serve as comonomers, polyimide acid is generated through solution polymerization, and then high-temperature cyclization is conducted; wherein the mole number of the aliphatic diamine accounts for 10-50% of the total mole number of the diamine, and the free volume and glass transition temperature of a molecular chain are effectively regulated and controlled by introduction of the aliphatic diamine; the wave-absorbing foam is prepared by taking polyimide as a matrix, doping 1-20wt% of wave-absorbing filler, and foaming for 1-3 hours in a supercritical carbon dioxide or nitrogen environment at the temperature of 180-220 DEG C and the pressure of 9-25MPa, through molecular structure design, the adsorption capacity and impact resistance of polyimide to carbon dioxide are remarkably improved, and the prepared foam has the advantages of light weight, high porosity, uniform foam structure and excellent heat resistance, can realize effective electromagnetic wave absorption in an X wave band, and is suitable for the fields of aerospace stealth and electromagnetic compatibility protection.

The invention discloses a high-temperature-resistant, bending-resistant and high-flexibility polyimide film for flexible display and a preparation method of the high-temperature-resistant, bending-resistant and high-flexibility polyimide film. According to the polyimide film, by introducing the nano silicon dioxide particles and constructing the porous structure design, the problems that a traditional polyimide film is insufficient in stability in a high-temperature environment, cracks are likely to be generated after bending, and the flexibility is poor are effectively solved. The polyimide film disclosed by the invention is prepared by adopting a diamine monomer and a dianhydride monomer as main raw materials, adding nano silicon dioxide particles, and carrying out solution polymerization, gelation, pore regulation and control and thermal imidization processes. The obtained polyimide film has a micron-sized porous structure, keeps stable at a high temperature of 400 DEG C, does not generate cracks after being bent for 100,000 times, has tensile strength of more than or equal to 150MPa, elongation at break of more than or equal to 25% and light transmittance of more than or equal to 85%, and is suitable for a substrate material of a flexible display device.

The invention relates to the technical field of polyethylene wax preparation, in particular to polyethylene wax with ultralow molecular weight, high crystallinity and narrow molecular weight distribution and a preparation method thereof.The preparation method comprises the steps that under the conditions that the temperature ranges from 60 DEG C to 180 DEG C and the pressure ranges from 0.5 MPa to 5.0 MPa, ethylene is introduced into a reaction device, an organic solvent is continuously added to serve as a medium, and the polyethylene wax with the ultralow molecular weight, the high crystallinity and the narrow molecular weight distribution is obtained; and adding alkyl aluminum halide and alkoxy titanium to carry out high-temperature solution polymerization reaction, and after the reaction is ended, cooling and drying to obtain the polyethylene wax. The polyethylene wax prepared by the invention has the characteristics of ultralow molecular weight, high crystallinity and narrow molecular weight distribution, and the molecular weight and the molecular weight distribution can be effectively adjusted in various modes, such as adjustment of substituent groups on phenyl or polymerization reaction conditions; meanwhile, compared with polyethylene wax in the prior art, the polyethylene wax produced by the process has remarkable advantages.

The invention discloses a copper-based current collector modified by a self-repairing artificial interface layer, a preparation method of the copper-based current collector and application of the copper-based current collector in a negative-electrode-free lithium battery. According to the self-repairing artificial interface layer, an ionomer with a self-repairing function is prepared from a nitrogen-containing water-soluble comonomer, a quaternary ammonium salt monomer, double-bond-terminated polyoxyethylene and a dopamine self-repairing monomer in a solution polymerization mode, and the ionomer with the self-repairing function is prepared into a solution to serve as an electrophoresis solution; and depositing the ionomer on the exposed copper-based current collector by adopting an electrophoretic deposition method. The artificial interface layer obtained by the method is compact and uniform, the thickness is adjustable, and the effects of accelerating lithium ion transmission, homogenizing lithium deposition, self-repairing and the like can be achieved. When the copper-based current collector modified by the self-repairing artificial interface layer is used for the negative-electrode-free lithium battery, the cycle life of the copper-based current collector is obviously prolonged, and a new solution is provided for developing the high-performance negative-electrode-free lithium battery.

The invention belongs to the technical field of lithium ion battery additive materials, and particularly relates to a high-compaction dispersion material and a preparation method thereof, and a high-compaction flexible positive pole piece, the high-compaction dispersion material comprises the following components by mass: 30-40 parts of a component A, 5-10 parts of a component B, 5-10 parts of a component C, and 40-60 parts of a solvent; wherein the component A comprises an unsaturated cyclic monomer, unsaturated polyether and a solution polymerization copolymer of an amine-containing monomer and a (methyl) acrylate monomer; the component B comprises a long-chain amine substance; the component C comprises organic ester; the high-compaction dispersion material, the preparation method thereof and the high-compaction flexible positive pole piece have the advantages of being excellent in dispersion performance, outstanding in softening effect, remarkable in pole piece compaction density improvement and the like, can have the two functions of dispersion and compaction improvement, reduces the production cost, improves the pole piece yield and has a good application prospect.

The invention provides a dynamic cross-linked polyolefin elastomer and a preparation method thereof. According to the method, a double-kettle serial solution polymerization process is adopted, a reaction material is generated through a polymerization reaction in a first reaction kettle, the reaction material is transferred into a second reaction kettle added with a dynamic cross-linking agent and an initiator for continuous reaction and then enters a devolatilization system, a quenching agent is added through a static mixer, then granulation is performed through a screw extruder, and the dynamic cross-linked polyolefin elastomer is obtained. According to the preparation method, dynamic chemical crosslinking is carried out in the production process of the polyolefin elastomer, and the mechanical property and thermal stability of the obtained polyolefin elastomer product can be improved on the premise of ensuring the processability.

The invention discloses polypropylene resin, a preparation method thereof and a polypropylene material, the polypropylene resin is a binary copolymer of propylene and 1-hexene, and the impact strength at-20 DEG C is 3-7 KJ / m < 2 >. The polypropylene resin is prepared by adopting a solution polymerization method, and a titanium-containing Ziegler-Natta catalyst is adopted and comprises a main catalyst, a co-catalyst and an external electron donor; the internal electron donor in the main catalyst comprises a dicarboxylic acid ester compound and a 1, 3-diether compound. The polypropylene resin itself has high low temperature impact strength and low haze. The antioxidant, the deacidification agent and the anti-reflection agent are simultaneously added into the polypropylene resin base material, and the prepared polypropylene material has the characteristics of high low-temperature impact strength, high transparency, low ash content and the like, and meets the preparation of injection molding products in the fields of medical tube materials, medical packaging, food packaging and the like with relatively high requirements on low-temperature impact and transparency.

The invention relates to a [NN] bidentate coordination metal catalyst based on a quinoline skeleton as well as a preparation method and application of the [NN] bidentate coordination metal catalyst. According to the preparation method, quinoline-8-formaldehyde and aniline are directly subjected to aldehyde-amine condensation under the catalysis of p-TsOH, and a quinoline-imino ligand is synthesized. The [NN] bidentate coordination metal catalyst based on the quinoline skeleton is prepared by carrying out one-pot reaction on the obtained ligand and in-situ synthesized MMe4 (M is Ti, Zr or Hf). The quinoline skeleton [NN] bidentate coordination metal catalyst is used for polyolefin synthesis. The preparation method has the advantages of simple synthesis process, easily available raw materials, high product yield and high temperature resistance, is suitable for high-temperature solution polymerization, and can be used for preparing high-performance polyolefin elastomers.

The invention provides star-shaped functionalized solution polymerized styrene-butadiene rubber and a preparation method thereof, and the preparation method comprises the following steps: S10, in an inert atmosphere, in an organic solvent, taking a conjugated diene monomer as a polymeric monomer, taking a substance obtained by premixing lithium alkyl and a front-end modifier as a functionalized initiator, and carrying out solution polymerization to obtain a polymer precursor; s20, adding an active coupling agent into the polymer precursor to obtain a star polymer with an active star core and a polar functional group at the tail end of each star arm; and S30, adding a functionalization reagent into the star polymer to obtain the star functionalized solution polymerized styrene-butadiene rubber with both chain end functionalization and chain middle functionalization. The front-end modifier and the active coupling agent are introduced, so that an active center is reserved in a star core, and the functionalization reagent is introduced to modify in a chain and enhance the interface bonding force between white carbon black and butadiene styrene rubber, so that the hysteresis loss of tire rubber is reduced, and the tire rubber is endowed with wear resistance, fatigue resistance and wet skid-rolling resistance balance.

The invention belongs to the field of oil and gas exploitation, and particularly relates to a carbon dioxide-salt double-response polymer thickening agent and a preparation method thereof. The carbon dioxide-salt double-response polymer thickening agent provided by the invention is prepared from acrylamide, acrylic acid, alkyl polyether acrylate and amine carbon dioxide response monomers through solution polymerization; after corresponding monomers of amine carbon dioxide are protonated, polymer molecular chains are better stretched through electrostatic interaction, the viscosity of the fracturing fluid can be increased, complexation and crosslinking of oxyethyl, oxypropyl and calcium and magnesium ions are facilitated, and therefore the tackifying effect of alkyl polyether acrylate is improved; meanwhile, oxyethyl and oxypropyl jointly regulate and control the tightness degree of a network structure, so that a calcium and magnesium ion'salt bridge 'tackifying effect is presented. According to the carbon dioxide-salt double-response polymer thickening agent provided by the invention, the viscosity of the thickening agent is improved through carbon dioxide and calcium and magnesium ions, and meanwhile, a fracturing fluid has certain imbibition oil displacement capacity after gel breaking.

The invention relates to the field of free radical solution polymerization programmed monomer supplementation, in particular to a polyacrylonitrile spinning solution with an adjustable molecular sequence and a preparation method thereof.The preparation method comprises the steps that polymerization solution formula components and dosage ranges are determined, and the components comprise acrylonitrile, itaconic acid, methyl methacrylate or fumaramide and the like; the thermodynamic reaction temperature ranges from 60 DEG C to 66 DEG C, the total monomer concentration ranges from 18 wt% to 26 wt%, and the initiator concentration ranges from 0.072 wt% to 0.103 wt%. When preparation is started, all components except for partial itaconic acid are added, then itaconic acid is supplemented in batches, and the supplementing time and the proportion range interval can be calculated according to a specific formula. The itaconic acid is supplemented in a manner of body nitrogen blowing or metered addition after dissolution, and the solution concentration is less than or equal to 55wt%. According to the method, the molecular sequence can be accurately regulated and controlled, the homogeneity of the copolymer is improved, heat release in the polymerization process is uniform, a stable environment is provided for industrial production, meanwhile, a reaction system is optimized, and the reaction efficiency and the product yield are improved.

The invention discloses a high-peeling conductive polyacrylate pressure-sensitive adhesive and a preparation method thereof. After a conductive filler, a coupling agent and ethyl acetate are uniformly stirred at high speed, the mixture is placed to obtain a conductive filler solution; after a polyacrylate solution, a cross-linking agent and the conductive filler solution are uniformly mixed, the mixture is placed until the bubbles on the surface disappear, and then the mixture is uniformly coated on a film, the thickness of the dry adhesive is controlled, and then the mixture is dried and matured to obtain a high-peeling conductive polyacrylate pressure-sensitive adhesive. The polyacrylate solution is obtained by a segmented solution polymerization method. After a soft monomer, a solvent, a functional monomer and an initiator are uniformly mixed, the temperature is increased to carry out a polymerization reaction, and then a solvent is added to continue the reaction, and then a hard monomer, a solvent and an initiator are added to continue the reaction until the reaction is complete, and a tackifying resin is added to obtain a polyacrylate solution. The high-peeling conductive polyacrylate pressure-sensitive adhesive obtained by the method has excellent conductive properties and high peel strength, and no adhesive residue is left when peeling.

The invention provides an ethylene maleic anhydride copolymer and a preparation and application method thereof, and the preparation method comprises the following steps: dissolving a maleic anhydride monomer in an organic solvent to form a uniformly dispersed solution system, and transferring the solution system into a high-pressure reactor; ethylene gas in a supercritical state is introduced into the solution system of the high-pressure reactor to form a uniform ethylene-maleic anhydride solution system, wherein the pressure of the ethylene gas in the supercritical state is 5-30 Mpa; adding a free radical initiator into the ethylene-maleic anhydride solution system, raising the reaction temperature, and carrying out solution polymerization reaction to obtain a reaction system; a precipitant is added into a reaction system to separate out the ethylene-maleic anhydride copolymer, ethylene and maleic anhydride in the ethylene-maleic anhydride copolymer alternately exist in the form that the molar ratio of ethylene to maleic anhydride is 1: 1, high-performance bonding composite resin can also be formed by blending the ethylene-maleic anhydride copolymer and polyethylene, and the high-performance bonding composite resin is suitable for the fields of adhesives, coatings, composite materials and the like.

The invention provides polyamide resin and a preparation method thereof. The preparation method comprises the following steps: mixing a polyamide 66 salt solution and an emulsion containing an anti-yellowing lubricant, and carrying out a polymerization reaction to obtain the polyamide resin, or adding an emulsion containing an anti-yellowing lubricant in the salt solution polymerization process of the polyamide 66, and carrying out polymerization reaction to obtain the polyamide resin. The preparation method of the polyamide resin is designed, and an emulsion containing an anti-yellowing lubricant is further added before or in the polycondensation process of polyamide 66 salt, so that the anti-yellowing lubricant can be uniformly dispersed in polyamide, and the polyamide resin with relatively high lubricity and relatively good yellowing resistance is obtained; the problem that adverse effects are brought to the physical and chemical properties of polyamide in the secondary processing process is avoided.

The invention relates to injectable high-strength hydrogel for bone tissue repair and a preparation method of the injectable high-strength hydrogel, a poly (hydroxyethyl acrylate-methyl acrylate) random copolymer is prepared through solution polymerization, the copolymer is fully swelled in water to obtain physical cross-linked hydrogel, and the injectable high-strength hydrogel is injectable and gelling in vivo under the action of shear thinning. And the water spitting of the gel is enhanced under physiological conditions. And mixing bioactive glass capable of forming hydrogen bond crosslinking with the copolymer to prepare the injectable high-strength hydrogel. The hydrogel not only can provide good support for a bone defect part, but also can promote proliferation and differentiation of internal cells of the bone defect part. The hydrogel disclosed by the invention is simple to prepare, convenient to operate, rapid in response, good in biocompatibility, relatively good in self-repairing capability, injectable and small in minimally invasive injury, and has a good application prospect in the field of irregular bone defect repairing.

The invention discloses an epoxy modified room-temperature self-crosslinking water-based acrylate dispersion as well as a preparation method and application thereof, and belongs to the field of water-based acrylic resin. The dispersoid is obtained by extracting an organic solvent from an acrylate polymer, adjusting the pH value to 7.5-8.5, mixing with ionized water and binary hydrazide, dispersing and filtering. The acrylate polymer is obtained by carrying out solution polymerization on a mixed solution of a part of initiator, a hard monomer, a soft monomer, a first type of hydrophilic monomer, a second type of hydrophilic monomer, epoxy resin and a combined cross-linking monomer and a residual initiator dissolved in an organic solvent at 80-83 DEG C, wherein the mixed solution is prepared from the initiator, the hard monomer, the soft monomer, the first type of hydrophilic monomer, the second type of hydrophilic monomer, epoxy resin and the combined cross-linking monomer. The main solvent of the dispersion is water, the viscosity is low, and the content of the organic solvent is 1t; the water-based ink has the advantages of low content of VOCs (volatile organic compounds), multiple cross-linked network structure, high cross-linking degree (78-83%), excellent resolubility after being prepared into ink, good adhesive force on a plastic film, good water resistance, good storage stability and high glossiness.

The invention belongs to the technical field of supporting films, and particularly relates to an acrylate pressure-sensitive adhesive, a supporting film adhesive tape, a preparation method and application. The acrylate pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 60 to 90 parts of acrylate soft monomer, 5 to 20 parts of polar functional monomer, 5 to 20 parts of high-Tg hard monomer, 0.1 to 0.5 part of initiator, 0.5 to 3 parts of polyfunctional thermocuring cross-linking agent and a proper amount of solvent. According to the acrylate pressure-sensitive adhesive disclosed by the invention, the acrylate pressure-sensitive adhesive which has the characteristics of low modulus and high cohesion microcosmically is prepared under a solution polymerization and thermocuring process through a specific'soft monomer-hard monomer-crosslinking agent 'formula system design. The pressure-sensitive adhesive macroscopically realizes the performance balance, which is difficult to realize at the same time, among adhesion, buffering and impact resistance.

The invention belongs to the technical field of sodium ion battery hard carbon negative electrode materials. The invention discloses a preparation method of a hard carbon microsphere negative electrode. And carrying out solution polymerization under catalysis of aldehyde monomers and phenolic monomers to obtain a phenolic resin suspension of the oligomer. And pouring the turbid liquid into a reaction kettle, carrying out high-temperature and high-pressure hydrothermal reaction and phenolic resin crosslinking, carrying out high-temperature carbonization, so that a dense crosslinking network becomes hard carbon microspheres with rich closed pores, and the phenolic resin-derived hard carbon electrode shows excellent electrochemical performance.

The disclosure provides compounds, compositions, and methods for improving a papermaking process. A method may include adding a strength aid to a cellulosic fiber suspension in the papermaking process and adding a dewatering agent to the cellulosic fiber suspension. The dewatering agent may comprise a polymer having a reduced specific viscosity from about 2.5 to about 5.5 dL / g. The polymer may include, for example, a solution polymer, a latex polymer, or both. The strength aid may be selected from, for example, a cationic GPAM polymer, an anionic GPAM polymer, an amphoteric polymer with an overall negative charge, an amphoteric polymer with an overall positive charge, a cationic polyacrylamide polymer, an anionic polyacrylamide polymer, an associative polymer, a treatment polymer embedded in a colloidal hydroxide complex, starch, or any combination of the foregoing.

The invention belongs to the technical field of antibacterial agents, and relates to a polycation-pi antibacterial agent as well as a preparation method and application thereof. The antibacterial agent has a controllable sequence structure, the main chain of the polymer is composed of alternate hydrophobic chain segments and hydrophilic chain segments, guanidine salts are regularly arranged, surface positive charges are intensively distributed, and multiple interactions of cation-pi, hydrogen bonds and pi-pi stacking can be generated among molecules of the antibacterial agent. The preparation method comprises the following steps: in the presence of a catalyst or in the absence of the catalyst, carrying out melt polymerization or solution polymerization on polycation guanidine salt and a compound with a benzene ring in a molar ratio of (0.8-1.2): 1 to obtain the polycation-pi antibacterial agent. According to the application, the antibacterial agent is used for finishing a fabric to obtain an antibacterial fabric, and the fabric is made of hydrophobic fibers. The preparation method of the antibacterial agent is simple, and the antibacterial fabric with durable antibacterial, directional moisture permeable and refrigeration effects can be prepared by adopting the antibacterial agent.

The invention belongs to the field of functional composite materials, and relates to a flexible stab-resistant material as well as a preparation method and application thereof. The preparation method of the flexible stab-resistant material comprises the following steps: providing a nano aramid aqueous dispersion or aramid slurry, wherein the aramid slurry comprises aramid resin, an amide solvent and a cosolvent; aramid fibers are subjected to surface modification by adopting the nano aramid aqueous dispersion or aramid slurry in a dipping manner to form a functionalized aramid fabric, and the functionalized aramid fabric is compounded with a resin adhesive system comprising benzoxazine resin, epoxy resin and the like to obtain the flexible stab-resistant material. According to the invention, a low-temperature solution polymerization technology is preferably adopted to prepare high-dispersion aramid fiber slurry, and the aramid fiber slurry is directly used for homogenization and intrinsic surface modification of aramid fiber or fabric in a dipping manner, so that the stab-resistant performance of the material is improved. The modified and functionalized aramid fabric and a resin adhesive system with benzoxazine resin as main resin are compounded to obtain the high-performance stab-resistant composite material which is beneficial to application.

The invention relates to a long-acting antibacterial polyamide fiber and a preparation method thereof. The long-acting antibacterial polyamide fiber is prepared from 4wt%-20wt% of nylon-guanidine salt copolymer master batch and 80wt%-96wt% of nylon, and the preparation method of the long-acting antibacterial polyamide fiber comprises the following steps: carrying out melt blending reaction on polyepoxy polystyrene synthesized by a solution polymerization method or a suspension polymerization method or a bulk polymerization method and a guanidine salt polymer antibacterial agent to obtain a polystyrene-guanidine salt copolymer functional material; then carrying out melt blending with nylon to obtain nylon-guanidine salt copolymer master batch; and finally, blending, melting and spinning with nylon to obtain the long-acting antibacterial polyamide fiber. By adopting the nylon-guanidine salt copolymer master batch disclosed by the invention, on one hand, the antibacterial agent is chemically bonded to a polyamide matrix, so that the long-acting antibacterial property of the fiber is ensured; on the other hand, the antibacterial agent is enriched on the surface of the antibacterial polyamide fiber. When the dosage of the antibacterial agent is low, the long-acting antibacterial polyamide fiber shows excellent antibacterial performance, so that the good mechanical property of the long-acting antibacterial polyamide fiber is kept at the same time.

The invention relates to the technical field of light flexible drivers and intelligent macromolecules, in particular to a preparation method of a polymer driver for improving bidirectional shape memory driving performance, which comprises the following steps: 1) preparing a polyethylene vinyl acetate-sodium chloride particle-xylene-benzoyl peroxide mixed solution by a solution polymerization method; 2) preparing a polyethylene vinyl acetate-sodium chloride particle-benzoyl peroxide composite material; (3) peroxide thermally initiates a cross-linking reaction between free radicals and a macromolecular main chain; and 4) preparing the bidirectional shape memory porous polymer soft body driver with different driving devices.The bidirectional shape memory porous polymer soft body driver has the advantages that the self-driven reciprocating deformation, large driving deformation and complex shape change of the polymer are realized on the basis of semi-crystalline polymer thermal coupling through the change of a cross-linked network interspersed in a crystal interval, and the bidirectional reversible driving performance is further improved.

The invention discloses a fluorine-containing chain extender, a composition for preparing a PLA (polylactic acid) foaming material, the PLA foaming material and a preparation method of the PLA foaming material. The fluorine-containing chain extender is prepared by a solution polymerization method, and prepared monomers comprise methyl methacrylate, glycidyl methacrylate and dodecafluoroheptyl acrylate in a molar ratio of (3-6): (0.1-2): (0.1-2). The composition for preparing the PLA foaming material comprises pure PLA and a fluorine-containing chain extender, wherein the mass of the fluorine-containing chain extender is 4-8wt% of the mass of the pure PLA. The PLA foaming material is prepared from the composition for preparing the PLA foaming material. The PLA foaming material prepared by the invention has relatively high expansion rate and cell density.

In the invention, rigid anthracene is introduced as a framework of bridged binuclear metal, the quinoline amino binuclear metal titanium zirconium hafnium catalyst is constructed, and the molecular weight of the obtained polymer can be effectively improved through the synergistic effect between the binuclear metal and the steric hindrance and electronic effect on the catalyst structure; a polyolefin elastomer (POE) and an ultra-high molecular weight random propylene (UHMWaPP) elastomer are efficiently synthesized. The quinoline amino binuclear metal titanium zirconium hafnium catalyst has the advantages of simple synthesis, easily available raw materials and high product yield. In copolymerization of ethylene and alpha-olefin, the catalyst shows excellent activity (6.25 * 10 < 7 > g (POE). Mol <-1 > (M). H <-1 >) and alpha-olefin selectivity (the insertion rate reaches 29.2 mol%), and a high-molecular-weight polyolefin elastomer (POE) (the polymer molecular weight Mw reaches 925 kg.mol <-1 >) is prepared. In propylene polymerization, the regularity of the polypropylene chain segment can be effectively regulated and controlled by adjusting the steric hindrance and the electronic effect of the catalyst, and the atactic polypropylene elastomer with the ultra-high molecular weight (the molecular weight reaches 3250 kg.mol <-1 >) is prepared with the high activity (6.6 * 10 < 7 > g (PP). Mol <-1 > (M). H <-1 >). In addition, the quinoline amino binuclear metal titanium zirconium hafnium catalyst also shows excellent high temperature resistance (higher than 160 DEG C), is suitable for high-temperature solution polymerization, and can be used for preparing high-performance polyolefin elastomers. Therefore, the invention has original innovation, and provides a new direction for the development of the field of polyolefin materials.

The invention discloses a high-strength acrylate rubber material and a preparation method thereof, and relates to the technical field of high polymer materials. When the high-strength acrylate rubber material is prepared, polyhydroxy imidazolium salt and phosphorus pentoxide react to prepare a functional flame retardant; reacting the pre-modified glass fiber with hydrazine hydrate to obtain modified glass fiber; the preparation method comprises the following steps: carrying out solution polymerization on ethyl acrylate, butyl acrylate, acryloxy propyl bis (trimethylsiloxy) methylsilane and glycidyl methacrylate to prepare acrylate raw rubber; the high-strength acrylate rubber material is prepared by uniformly mixing acrylate raw rubber, the modified glass fiber, a functional flame retardant and triphenyl phosphine, plastifying and thin-passing. The high-strength acrylate rubber material prepared by the invention has excellent flame-retardant, antibacterial, anti-aging and mechanical properties.

The invention relates to preparation of an intelligent self-repairing iron-nickel-based corrosion-resistant alloy material, which comprises the following steps: synthesis of acrylic resin, preparation process of microcapsules, pretreatment of a magnesium alloy substrate, preparation of an acrylic resin coating, preparation of an electro-deposition iron-nickel alloy, preparation of a precursor ceramic repairing agent, and preparation of the intelligent self-repairing iron-nickel-based corrosion-resistant alloy material. An electrodeposition method, a solution polymerization method and a coating preparation method are creatively combined, the prepared intelligent self-repairing iron-nickel-based corrosion-resistant alloy material is a high-strength and high-hardness alloy material, and the intelligent self-repairing iron-nickel-based corrosion-resistant alloy material has the advantages of self-repairing function, corrosion resistance, wear resistance and high hardness.

The invention relates to a composite material, in particular to a universal oil-water separation material and a preparation method thereof. According to the preparation method, the surface of the stainless steel mesh is oxidized and corroded by using a mixed solution of ammonium persulfate and sodium hydroxide, and then the oxidized and corroded surface of the stainless steel mesh reacts with oxalic acid, so that the surface of the prepared stainless steel mesh material contains a large number of polar groups; and finally, the stainless steel mesh treated by oxalic acid is soaked in a buffer solution containing dopamine, dopamine is self-assembled to the surface of the stainless steel mesh in the solution polymerization process, and a super-hydrophilic layer is formed. The preparation method is simple and easy to implement; the prepared universal oil-water separation material can be applied to various oil-water separation occasions, and can be used for separating edible oil / water mixtures, petroleum crude oil / water mixtures, mixed organic solvent / water mixtures and the like with complex components.