26results about How to "Good modification effect" patented technology

The application discloses a PE material modification equipment and modification process, and relates to the technical field of PE material modification. The PE material modification equipment comprises a machine body, a supporting base is welded at the bottom of the machine body, a driving motor is fixed on the side wall of the machine body, an upper cover is detachably installed at the top of the machine body, a driving modification mechanism is arranged in the machine body, the driving motor performs power output on the driving modification mechanism, the driving modification mechanism comprises a driving shaft, and the end of the driving shaft is fixed with the output end of the driving motor. In the process that the transmission auger is used for stirring and conveying modification of PE materials, the PE materials are subjected to secondary crushing and modification treatment through three groups of movable stirring blades and fixed stirring blades. In the process that the outer ring rotates, the movable stirring blades move relative to the fixed stirring blades through the contact and extrusion of the stand and the triangular block, so that the stirring and grinding effect is achieved, and the modification effect on the PE materials is improved.

The utility model discloses a modification device for producing inorganic non-metal modified powder with good dispersity. The modification device comprises a semi-finished product bin (1), a first spiral reamer (2), an ion fan (3), a medicament barrel (4), a medicament spraying opening (5), a three-roller modification main machine (6), a cyclone separator (7), a pulse cloth bag collector (8), an induced draft fan (9), a recycled powder bin (10), a second spiral reamer (11), a packaging machine (12) and a material drying room (13). According to the device, the three-roller modification host machine is adopted to finish surface modification, so that the modification effect is good; powder modified by the three-roller modification main machine is less in agglomeration and good in dispersing performance after being separated by the air separator; the ion fan ionizes air to generate a large amount of positive and negative charges, so that charges on the surface of the powder during high-speed friction, collision and shearing can be neutralized, and the static electricity removal treatment of the powder is realized; the device can realize continuous production, and is high in yield and low in energy consumption; and the method conforms to green development, and is energy-saving and environment-friendly.

The invention provides a biomass adhesive and a preparation method thereof. The biomass adhesive comprises an elastomer modified epoxy resin adhesive component A and a biomass phenolic amine curing agent component B, compared with a conventional modification method of directly adding an external plasticizer, the preparation method of the elastomer modified epoxy resin comprises the following steps: pre-polymerizing elastomers such as rubber and a functional monomer, and carrying out ring-opening reaction on the pre-polymerized elastomers and the functional monomer and epoxy groups in liquid glycidyl ether epoxy resin to generate a sea-island structure prepolymer molecule with a preliminary prototype; the modification method can significantly improve the toughness and impact resistance of the prepared epoxy resin adhesive. The elongation at break of the biomass adhesive is larger than 100%, the impact strength can reach 180 KJ / m < 2 >, and the biomass adhesive has the advantages of being high in bonding strength, resistant to corrosion, high in structural strength after curing and the like and has wide application prospects and market potential.

The invention relates to the technical field of photocatalysts, in particular to a nonmetal plasmon heterojunction material, a preparation method and application thereof and a method for preparing p-aminophenol through reduction of p-nitrophenol. The nonmetal plasmon heterojunction material provided by the invention comprises a C3N4 nanosheet and a WO3-x nanoplate (x is 0.1 to 0.3) positioned on the surface of the C3N4 nanosheet. The WO3-x local surface plasmon characteristic can effectively expand the spectral response range of the non-metal plasmon heterojunction material in a visible region to a near-infrared region, and the light absorption efficiency of the non-metal plasmon heterojunction material is remarkably enhanced. The nonmetal plasmon heterojunction material provided by the invention can realize efficient reduction of p-nitrophenol based on the synergistic effect of an interface heterojunction, a built-in electric field and oxygen vacancies, is high in selectivity, has excellent photocatalytic activity for reduction of p-nitrophenol, and is excellent in photocatalytic activity stability.

The present application relates to tungsten hard alloy technical field, especially to a kind of rare earth modified tungsten hard alloy and its preparation method and application.The rare earth modified tungsten hard alloy provided by the present application mainly uses cerium oxide, yttrium oxide and titanium oxide rare earth as modified component, through the preparation of special structure to modified component, so that modified component can synergistically give full play to function, improve the overall modification effect, so that the rare earth modified tungsten hard alloy provided by the present application has high hardness and high toughness.And, by controlling the specific composition and particle size of the composite rare earth particles and the rare earth modified iron powder and other parameters, the synergistic effect between the rare earths can be further improved, and the toughness can be improved under the premise of high hardness.The composite rare earth particles and the rare earth modified iron powder in the present application also have good complex effect, which helps the effective dispersion and particle size control of the overall component, thereby ensuring the balance of hardness and toughness of the rare earth modified tungsten hard alloy.

This invention discloses a method for directional modification of bamboo based on a citric acid concentration gradient for softening and mechanical compensation, and the resulting directional modified bamboo. The method includes the following steps: Step 1: Pretreated bamboo raw material is immersed in a citric acid aqueous solution at room temperature to obtain citric acid-impregnated bamboo; Step 2: The citric acid-impregnated bamboo is subjected to intermittent microwave treatment in a microwave field, washed, and air-dried at room temperature to constant weight to obtain modified bamboo. The directional modification method achieves directional control of the macroscopic mechanics and microstructure of bamboo by adjusting the mass concentration of the citric acid aqueous solution in Step 1: when the target is highly flexible softened bamboo, the mass concentration of the citric acid aqueous solution in Step 1 is 25%~35%; when the target is modified bamboo with mechanical compensation, the mass concentration of the citric acid aqueous solution in Step 1 is 35%~45%. This invention can directionally meet different needs from high flexibility deformation to structural strength.

The application discloses a preparation method of modified white carbon black, modified white carbon black, and prepared masterbatch and vulcanized rubber. The preparation method of the modified white carbon black comprises the following steps: uniformly mixing silane coupling agent, sorbitan fatty acid ester surfactant, organic solvent and white carbon black to obtain the modified white carbon black. The application uses specific surfactant sorbitan fatty acid ester and silane coupling agent, modifies the white carbon black organic solvent dispersion liquid in a high-speed dispersion machine, and prepares the masterbatch filled with the white carbon black by liquid-phase compounding technology of the rubber solution, so as to prepare the rubber vulcanized rubber from the masterbatch. Compared with the traditional dry mixing technology or the wet mixing technology using the coupling agent alone, the dispersion of the white carbon black in the rubber matrix is better, the dynamic performance, heat generation and wear resistance of the rubber compound are improved, and the prepared vulcanized rubber can be used for preparing the tread rubber, so that the rolling resistance and heat generation of the tire are reduced.

The invention discloses an emulsion type catalyst for hydrothermal cracking of thickened oil as well as a preparation method and application of the emulsion type catalyst, and belongs to the technical field of oil exploitation and catalysis. The catalyst is prepared by the following method: adding a molybdenum-based catalyst, an emulsifier and emulsion oil into water, and carrying out ultrasonic emulsification to obtain the thick oil hydrothermal cracking emulsion type catalyst. The emulsion type catalyst prepared by the invention is a nano molybdenum catalytic system with high stability, low oil phase proportion, wide pH application range and good salt tolerance, has good dispersity and transmission capacity in an oil-water reaction system, has relatively high catalytic cracking activity on underground thickened oil, and can be used for preparing the underground thickened oil. Therefore, the method has good applicability and good application value in the technical field of oil exploitation.

The application belongs to the field of marine corrosion protection and intelligent coating, and relates to an intelligent epoxy resin anticorrosive coating based on a dual-mode early warning and a preparation method. The coating is prepared by modifying epoxy resin (E44) and polypropylene glycol diglycidyl ether (PPGDGE) with 1,10-phenanthroline-5-amino (APhen), and then curing and cross-linking the two epoxy resin prepolymers with polyetheramine (D400) to obtain an epoxy resin anticorrosive coating with a pre-warning function. 2+ Due to the introduction of APhen, the prepared epoxy resin anticorrosive coating has fluorescence performance, can be complexed with Fe 2+ , and obvious visual coloration occurs. With the increase of the concentration of Fe , fluorescence quenching occurs. These two characteristics endow the system with a pre-warning function for local corrosion of a metal substrate. Meanwhile, the intelligent epoxy resin coating prepared based on the interpenetrating network has excellent mechanical properties and wide market prospects. The steps are simple, the operation is convenient, and the practicality is strong.

This invention relates to the field of fabric technology, specifically to a breathable antibacterial fabric and its preparation process, and sportswear made from this fabric. The preparation process of the breathable antibacterial fabric includes: preparation of a composite antibacterial agent, preparation of multifunctional polyester fibers, amination modification of phenolic lignin, modification treatment of polyacrylonitrile, and preparation of the breathable antibacterial fabric. The breathable antibacterial fabric of this invention consists of inner, middle, and outer layers: the inner layer is a blend of modal and other materials, which is skin-friendly, moisture-wicking, and antibacterial; the middle layer is a polyurethane film layer; the outer layer contains polyacrylonitrile composite fibers, which are antibacterial, crisp, and breathable. A composite antibacterial agent made of chitosan, cysteine, and copper nitrate imparts dual antibacterial properties to the fabric, reducing bacterial resistance. Ethylene treatment enhances the bonding of components, improving wash resistance and antistatic properties; the co-spinning of amination-modified phenolic lignin and polyacrylonitrile increases fiber strength, breathability, and UV resistance. This fabric is suitable for sportswear.

This utility model discloses a microbial carbon fixation enhanced recycled aggregate device with stirring function, including an air inlet device, a liquid inlet device, a reaction vessel body, and a collection device. The air inlet device includes a vacuum pump and a carbon dioxide cylinder, with an inlet pipe connected to the carbon dioxide cylinder. The inlet pipe is equipped with a thickened valve, a valve handwheel, a pressure gauge, and an inlet valve. The vacuum pump is connected to the side of the reaction vessel body via a flange. Thus, the heating furnace performs a carbonization reaction by mixing microbial slurry, calcium source solution, and recycled aggregate in the reaction vessel. The recycled aggregate is placed in the reaction vessel, and the device controller controls the introduction of carbon dioxide, the spraying of the solution, and the stirring of the recycled aggregate within the reaction vessel. After carbonization, the aggregate enters the aggregate collection area. This device achieves more uniform carbonization of the recycled aggregate, improves the modification effect of microbial enhanced recycled aggregate, and is suitable for enhancing recycled aggregate with carbon-fixing bacteria.

The application discloses a kind of magnesium oxide-containing easy-to-weld marine engineering steel plate and preparation method thereof, and its chemical composition mass percentage is C:0.05-0.09%, Si:0.15-0.30%, Mn:1.10-1.50%, P≤0.010%, S≤0.003%, Nb:0.008-0.020%, Ti:0.005-0.015%, Al:0.005-0.010%, Mg:0.0010-0.0025%, the rest components are Fe and inevitable impurities.The easy-to-weld marine engineering steel plate base metal yield strength is greater than or equal to 420MPa, tensile strength is greater than or equal to 550MPa, A is greater than or equal to 45%, -60℃ near surface, 1 / 4, heart transverse and longitudinal impact energy is greater than or equal to 200J, control CEV≤0.34, Pcm≤0.18;After welding of greater than or equal to 300kJ / cm line input, joint tensile strength is greater than or equal to 540MPa, thickness direction -60℃ impact energy is greater than or equal to 150J, fully meet the need of large line energy welding.The invention discloses the comprehensive mechanical properties of magnesium oxide-containing easy-to-weld marine engineering steel produced by metallurgical technology are excellent, alloy cost is low, production line adaptability is strong, and it has broad popularization prospect.

The application discloses a multifunctional pea polypeptide and a preparation method thereof, and belongs to the technical field of functional polypeptides. The method comprises the following steps: extracting pea protein isolate by using an ultrasonic-assisted alkali dissolution and acid precipitation method; preparing the pea polypeptide by using a steam explosion technology-assisted enzymatic hydrolysis method; and evaluating the functional activity of the pea polypeptide by using a chemical method. The pea polypeptide prepared by the method has the functions of antioxidation, blood pressure reduction and blood sugar reduction. In the application, the pea polypeptide is obtained by using steam explosion treatment to assist enzymatic hydrolysis, and the above functions of the pea polypeptide are improved, so that the DPPH free radical scavenging capacity is 92%, the ABTS free radical scavenging capacity is 93%, the O2 ‑ free radical scavenging capacity is 98%, the angiotensin transferase ACE activity inhibition rate is 68%, the alpha-glucosidase activity inhibition rate is 75%, the alpha-amylase activity inhibition rate is 71%, and the foundation is laid for the wide application of the pea polypeptide in functional foods or special diet foods.

The invention provides a preparation method of light-color rice bran wax acid wax, which comprises the following steps: deoiling: soaking deoiled and undecolorized rice bran wax in ethyl acetate, heating and melting, cooling and slicing for later use; oxidation: heating the sliced rice bran wax and dilute sulphuric acid to melt the rice bran wax, adding a sodium bichromate solution, continuously stirring until the color of the rice bran wax is changed from brown to light, naturally cooling, and standing to layer the wax and the chromium slurry solution; pickling and washing, heating the oxidized rice bran wax into liquid, adding dilute sulphuric acid, stirring, standing to layer the wax and the dilute sulphuric acid solution, adding water, stirring and heating until the wax is completely molten, continuously stirring and standing to layer the wax and the washing liquid, cooling the oxidized rice bran wax on the upper layer, slicing and packaging. The invention also provides the light rice bran wax acid wax. The rice bran wax is oxidized by sodium bichromate to generate the light-color, odorless and hard rice bran wax acid wax, small molecular substances are effectively removed, the emulsifying property and glossiness are obviously improved, and deep processing is facilitated.

The invention relates to the technical field of soil remediation, in particular to a heavy metal contaminated soil remediation agent and remediation method.The remediation agent is prepared from ferrous chloride tetrahydrate, butanediol, diethylene glycol, NaBH4, deionized water, tannic acid, a composite silane coupling agent and dithiothreitol. The invention further provides a heavy metal contaminated soil remediation method which is characterized by comprising the specific steps that firstly, organic matter compost and the heavy metal contaminated soil remediation agent are added into heavy metal contaminated soil, stirring and maintenance are conducted, and then the heavy metal contaminated soil remediation agent is obtained. The heavy metal contaminated soil remediation agent and the remediation method have the characteristics of low cost, simple method, high remediation effect, environmental friendliness and the like, and can adapt to various application environments.

This invention relates to the field of polymer materials technology, and proposes an anti-UV mulch film, its preparation method, and its application. The anti-UV mulch film comprises the following components: PBAT, PLA, and a silane-modified ultraviolet shielding agent, wherein the ultraviolet shielding agent in the silane-modified ultraviolet shielding agent is nano-talc-coated micron-sized ZnO. This technical solution solves the problem in related technologies where poor dispersibility and compatibility of ZnO in the mulch film leads to poor UV resistance.

This invention relates to the field of activated carbon technology, and proposes a highly selective activated carbon for water purification and its preparation method. The method for preparing highly selective activated carbon for water purification includes the following steps: S1, adding coconut shell activated carbon to a citric acid solution and ultrasonically treating it to obtain citric acid-modified coconut shell activated carbon; S2, adding the citric acid-modified coconut shell activated carbon to a trehalose solution, and activating it with EDC and NHS to obtain activated modified coconut shell activated carbon; S3, adding the activated modified coconut shell activated carbon to a polyethyleneimine ethanol solution and ultrasonically treating it to obtain highly selective activated carbon for water purification. This technical solution solves the problem of poor selectivity of polyethyleneimine-modified coconut shell activated carbon for specific pollutants in water in related technologies.

This invention relates to the field of polymer materials, and discloses a modified polyether ester, its preparation method and application, an elastomer additive, and an elastomer. The modified polyether ester contains structural unit A as shown in formula (I) and structural unit B as shown in formula (II), where R1 is an alkylene group having 2-10 carbon atoms, m is an integer from 5-100, n is an integer from 10-125, and R2 is hydrogen or an alkyl group having 1-5 carbon atoms; the terminal carboxyl group content of the modified polyether ester is not higher than 5 mol / t. This modified polyether ester can efficiently load elastomer additives, resulting in high activity stability of the elastomer additives, thereby improving the modification effect of the elastomer additives on the elastomer, and enabling the multiple reuse of elastomer products. Formula (I), Formula (II).

The utility model discloses a modifying and homogenizing device suitable for high-hardness powder. The modifying and homogenizing device comprises a cylinder main body (1), a front end cover (2), a rear end cover, a stirrer (3), a feeding hole (4) and a dust removal bag (5), the cylinder main body is horizontally arranged, and a horizontally arranged stirrer is arranged in the cylinder main body; aluminum oxide ceramic chips are attached to the inner walls of the cylinder body, the front end cover and the rear end cover. When the equipment runs, powder is fed from a feed port, an auxiliary agent enters from an auxiliary agent liquid inlet pipe (7), and a gas inlet pipe (6) can be used for filling high-temperature compressed gas into a cylinder main body to accelerate mixing and homogenization; a second one-way valve (8) is installed on the auxiliary liquid inlet pipe, and a first one-way valve (9) is installed on the gas inlet pipe. The aluminum oxide ceramic chips are attached to the inner walls of the cylinder main body, the front end cover and the rear end cover, so that the problem that high-hardness powder abrades the inner wall of the cylinder main body is solved; and an auxiliary liquid inlet pipe and a gas inlet pipe are arranged on the front end cover and the rear end cover, so that powder modification and homogenization are accelerated.

The invention provides a virus-removing filtering membrane constructed based on superfine EVOH nanofibers and a preparation method thereof.The preparation method comprises the steps that the EVOH nanofibers are prepared into dispersion liquid, the nanofibers are subjected to in-situ activation through an activating agent and placed in a membrane pool of non-woven fabric, then a fluid force field is utilized to enable the nanofibers to form a membrane on the surface of the non-woven fabric, and the virus-removing filtering membrane is obtained. And finally, modifying the nanofibers by adopting a mode that the modified liquid circularly flows through the composite membrane, so as to prepare the virus-removing filtering membrane constructed based on the superfine EVOH nanofibers. The virus-removing filtering membrane is small in fiber diameter, high in porosity and high in flux, the average pore size is 20 nm, and the effect of blocking viruses from passing through protein molecules is achieved; the surface of the filtering membrane is provided with one of positive charges or negative charges, so that protein with the same charges on the surface can be prevented from being adhered to the surface of the fiber, the rejection rate of the filtering membrane on active substances in biological agents is reduced, and the application in the fields of virus removal and biological medicine preparation separation is met.

This invention relates to the field of membrane material surface modification technology, and discloses a hydrophilic modified polyethylene membrane, its preparation method, and its application. The hydrophilic modified polyethylene membrane comprises a polyethylene membrane, a pre-modified layer on the surface of the polyethylene membrane and in the membrane pores, and a hydrophilic layer grafted onto the polyethylene membrane comprising a hydrophilic polymer; wherein the pre-modified layer is a polymer layer containing catechol structural units. This hydrophilic modified polyethylene membrane exhibits strong hydrophilicity and stable hydrophilic effect.

The invention provides a biomass composite reinforced PBAT multifunctional fully biodegradable plastic and a preparation method thereof, and relates to the technical field of materials. The method comprises the following steps: dispersing industrial alkali lignin in an ethyl acetate solvent to obtain an industrial alkali lignin solution; carrying out suction filtration on the industrial alkali lignin solution, and concentrating and drying the obtained filtrate to obtain lignin; then mixing the PBAT resin, lignin and a compatibilizer, and carrying out hot press molding after mixing is finished, so as to obtain the biomass composite reinforced PBAT multifunctional fully biodegradable plastic.

This invention discloses a method and application for preparing novel composite materials using modified red mud, belonging to the field of solid waste resource utilization technology. The technical solution of this invention is as follows: red mud is dried, ground, and calcined to obtain magnetic red mud. Sucrose and humic acid are mixed with the magnetic red mud, ultrasonically dispersed, and magnetically stirred to ensure thorough mixing. The resulting mixture is placed in a reaction vessel for hydrothermal reaction. After the reaction is complete, the solution is cooled, filtered, washed, and dried to obtain a hydrothermal carbon-humic acid red mud composite material. This invention transforms industrial solid waste red mud into an adsorbent material through a simple calcination and hydrothermal method, achieving synergistic solid-liquid treatment and providing a new approach for the resource utilization of red mud. The novel composite material prepared by this invention using red mud doped with sucrose and humic acid has better pore structure and selectivity compared to traditional adsorbents, achieving the goal of treating waste with waste.

The application relates to the technical field of composite materials and discloses a protein separation special precise ultrafiltration membrane and a preparation method thereof, which comprises the following steps: S1: polyether sulfone, zinc oxide, glycerol, acetone and a solvent are added into a reaction kettle to be configured into a mixed solution, and the mixed solution is stirred and heated; S2: the mixed solution prepared in S1 is uniformly stirred, vacuum defoaming treatment is carried out, and an ultrafiltration membrane casting solution is prepared; S3: the casting solution in S2 is extruded from a ring-shaped spinneret through a metering pump, warm and humid air is introduced into the inner cavity of the ring-shaped spinneret, the air enters a gel tank, is phase-separated and solidified to be a hollow fiber membrane, the initial polyether sulfone hollow fiber ultrafiltration membrane is obtained through traction and winding; and S4: the initial polyether sulfone hollow fiber ultrafiltration membrane in S3 is cleaned with pure water, is hung and dried in a dehumidification room with certain temperature and humidity, and the hollow fiber special ultrafiltration membrane is prepared; the application has the following advantages and effects: the finished product has better hydrophilicity, higher pure water flux and more precise separation effect.

The application belongs to the technical field of building insulation material processing and manufacturing, and particularly discloses a premixing device, which comprises a premixing host, a stirrer, an atomization spraying assembly, a storage bin, a first feeder and a drying box. The stirrer comprises a driving motor, a stirring shaft and a plurality of stirring impellers. The stirring shaft is connected with the output end of the driving motor and extends into the premixing host. The stirring impellers are arranged on the stirring shaft. The premixing device is provided. The atomization spraying assembly is used to uniformly coat the modifying additives. The storage bin is protected by inert gas to ensure the purity of raw materials. The stable feeding structure and the omnibearing stirring design are used to fully mix the raw materials, so that the problems of aerogel powder agglomeration and poor compatibility with cement-based slurry are solved, and equipment support is provided for the large-scale application of aerogel in autoclaved aerated concrete block production.

This invention provides a composite nucleating agent and its application in the preparation of nylon 66 composite materials, belonging to the field of nylon 66 composite materials. The composite nucleating agent is composed of a first nucleating agent and a second nucleating agent, which synergistically regulate the crystallization behavior of nylon 66. The first nucleating agent is zinc oxide or silicon dioxide; the second nucleating agent is one or more of sodium benzoate, disodium hydrogen phosphate, zinc phenylphosphonate, and sodium stearate. The mass ratio of the second nucleating agent to the first nucleating agent ranges from 1:1 to 5:1. The composite nucleating agent of this invention, when used in the preparation of nylon 66 composite materials, can effectively improve the crystallization properties of nylon 66, achieving a good balance between low water absorption and excellent mechanical properties in nylon 66 composite materials.