408results about How to "Improve surface activity" patented technology

The invention provides a robot joint dynamic cable made of a self-repairing polyurethane material and a preparation method of the robot joint dynamic cable, and belongs to the field of cables. Polytetrahydrofuran glycol and hexamethylene diisocyanate react to form a soft and hard segment structure, 1, 4-butanediol is added for chain extension, dopamine hydrochloride is introduced, the hard segment structure is enhanced, and a self-repairing hydrogen bond network is formed; carbon nanotubes are introduced, and through plasma treatment and silane coupling agent modification, the tensile resistance, fatigue resistance and electrical properties of the material are improved; montmorillonite is compounded with polyethyleneimine through organic treatment, so that the cracking resistance and wear resistance of the material are enhanced; epoxy groups are introduced to the surface of boron nitride, and dopamine hydrochloride is self-polymerized, so that excellent heat dissipation capability and dimensional stability are provided. Through the synergistic effect of the components, the composite material has excellent mechanical properties, electrical properties, heat dissipation, wear resistance and the like, is especially suitable for a dynamic cable of a robot, and can stably work in a complex environment for a long time.

The invention discloses a humic acid liquid fertilizer and a preparation method and application thereof, and belongs to the technical field of liquid fertilizers, organic waste and ferric oxide are ball-milled and mixed, transferred into a muffle furnace, roasted for 2-2.5 h at 280-310 DEG C under nitrogen protection, transferred into a reaction kettle and stirred and mixed with a 10 wt% hydrogen peroxide aqueous solution and potassium hydroxide powder, and the humic acid liquid fertilizer is obtained. The preparation method comprises the following steps: adding potassium humate into a potassium humate solution, extracting for 40-60 minutes under the assistance of ultrasonic waves, filtering to obtain a potassium humate extract and filter residues, transferring the potassium humate extract into a stirring kettle, adding urea, dipotassium phosphate, a composite carbon dot lubricant and a suspension stabilizer into the stirring kettle, and uniformly mixing to obtain the humic acid liquid fertilizer. The suspension stabilizer can reduce the generation of flocculation and crystallization in the liquid fertilizer, and through the antifriction and lubrication effects of the composite carbon dot lubricant, the friction force between indissolvable solids and water outlet holes of the drip irrigation equipment is reduced, and the risk of blockage of the drip irrigation equipment is reduced.

The invention relates to a production process of a high-elasticity heat-resistant polyester yarn, which comprises the following steps: firstly, selecting high-molecular-weight polyethylene glycol terephthalate, adding 1-3% of nano filler and 5-10% of functional copolymer, and drying at 150 DEG C for 4-6 hours to improve the stability and processability of the material; secondly, melt extrusion is conducted at 280-290 DEG C, spinning is conducted through a multi-section temperature control spinning head, and the fiber cooling uniformity is effectively controlled. Then, two times of drafting and a heat setting process are adopted, the orientation degree of a molecular chain is improved in one time of drafting, and low-temperature plasma treatment is combined to optimize the surface activity and the setting effect of the fibers. In the secondary drafting, the fiber deformation is finely adjusted at low temperature, the thermal damage is reduced, the elasticity is improved, and finally, xylanase treatment and ultraviolet curing are combined, so that the softness, the skin-friendly property and the weather resistance of the fiber are remarkably improved.

The invention relates to the technical field of PET materials, and particularly discloses a wear-resistant PET bottle and a preparation process thereof. The wear-resistant PET bottle is prepared from the following raw materials: PET resin, modified ceramic powder, glass fibers, a flexibilizer, an antioxidant, a light stabilizer and a lubricant. Wherein the modified ceramic powder comprises B2O3-Al2O3 complex-phase powder and a titanate coupling agent, the B2O3-Al2O3 complex-phase powder is modified by the titanate coupling agent, one end of a coupling agent molecule is connected with B2O3-Al2O3 complex-phase powder particles through chemical action, and the other end of the coupling agent molecule is crosslinked with PET resin, so that the compatibility of the ceramic powder and matrix resin is improved; and the ceramic powder is uniformly dispersed in the PET resin, so that the wear resistance of the PET resin is effectively enhanced.

The invention discloses a carbon fiber composite material as well as a preparation method and application thereof. Based on the structural design of the liquid crystal polymer with different dimensions, a liquid crystal polymer molecule assembly layer is constructed on the surface of the carbon fiber, the roughness and surface activity of the surface of the carbon fiber are improved, and meanwhile, the interface performance of the composite material is improved through the efficient redirectionality of the liquid crystal polymer under the microcosmic mesocrystal domain structure and the load. Besides, based on the high orientation of the liquid crystal polymer in the interface phase of the composite material, a multi-dimensional heat conduction network is constructed, the dominant vibration mode of the carbon fiber and the resin matrix in the phonon heat transfer process is effectively coupled, the possibility of carrier phonon scattering at the interface is reduced, the interface thermal resistance is greatly reduced, and the thermal conductivity of the composite material is improved. Therefore, the heat-conducting property of the composite material is improved.

The invention relates to the technical field of nano material preparation, and provides a molybdenum powder preparation method and molybdenum powder.The molybdenum powder preparation method comprises the steps that original molybdenum trioxide is subjected to thermal shock treatment, and treated molybdenum trioxide is obtained; the defect of the treated molybdenum trioxide is higher than that of the original molybdenum trioxide; adding the treated molybdenum trioxide and a water-soluble carbon source into a solvent, and carrying out ultrasonic dispersion and ball milling treatment to obtain mixed slurry; dehydrating and drying the mixed slurry to obtain precursor powder of organic carbon coated molybdenum trioxide; performing inert atmosphere reduction treatment on the precursor powder to obtain molybdenum dioxide; carrying out gas reduction deoxidation treatment on the molybdenum dioxide to obtain molybdenum powder; and the particle size of the molybdenum powder is nanoscale. The method disclosed by the invention can be used for preparing the nano molybdenum powder with narrow particle size distribution.

The invention relates to the technical field of sewage treatment, and discloses a micro-plastic-containing sewage water body treatment agent and a preparation method thereof. The preparation method comprises the following steps: adding quaternary ammonium salt modified chitosan modified carbon nanotubes, carboxyl betaine cellulose modified polyacrylamide and polyaluminum chloride into a reactor, and stirring to obtain the micro-plastic-containing sewage water body treatment agent. The carbon nanotubes can provide abundant adsorption sites to adsorb micro-plastic particles in water; the quaternization modification enhances the charge neutralization, bonding bridging and netting sweeping effects of the chitosan; after the quaternary ammonium salt modified chitosan and the carbon nanotubes are compounded, the dispersity of the carbon nanotubes is improved, and the removal effect on the micro-plastics is enhanced; long-chain groups are grafted on the surface of the cellulose, so that the hydrophobicity is improved, and the surface activity of the cellulose is improved; polyacrylamide molecular chains contain anionic and cationic groups at the same time, positive and negative charges can interact with each other in water, a cross-linked network is formed in the molecular chains and among the molecular chains, and the removal effect on micro-plastics is improved.

The invention relates to a composite material and metal connecting method based on metal surface femtosecond laser etching, and belongs to the technical field of composite material and metal plate interface and bonding. A metal interface is subjected to texturing treatment through femtosecond laser, a multi-stage microstructure is formed on the metal surface, then plasma treatment is used, the chemical energy and surface activity of the metal surface are improved, and the interlayer bonding strength of a metal plate and a composite material is further improved. Compared with a traditional bolt connection and glue joint of the same size, the connection mode can bear higher loads, energy absorbed before fracture is high, and the composite material has remarkable advantages in the aspects of bearing and weight reduction of a composite material structure and has potential application prospects.

The invention belongs to the technical field of textile auxiliaries, and particularly discloses a multifunctional polyester type high-temperature leveling agent and a preparation method thereof.The leveling agent is prepared from, by mass, 1.5-2.5 parts of ester exchange catalyst, 5-25 parts of polyhydric alcohol, 0.5-1.5 parts of esterification catalyst, 3-40 parts of fatty acid, 15-30 parts of solvent, 20-40 parts of hydrophilic polyether chain segment and 20-40 parts of benzene-containing polyester chain segment. According to the multifunctional polyester type high-temperature leveling agent and the preparation method thereof, the prepared leveling agent has the effects of dispersing and solubilizing a dye, preventing a fabric from being scratched in the washing process, performing hydrophilic soft modification on the surface and the like, and due to the excellent dispersion and solubilization stability of the leveling agent in the full-temperature section, the heating rate can be effectively increased; the production speed is increased, wrinkles and scratches caused in the rapid temperature rising process of the fabric can be effectively prevented, and meanwhile the fabric is endowed with good hydrophilic and soft performance.

The invention relates to multifunctional ecological negative ion environment-friendly wallpaper and a preparation process thereof, and belongs to the technical field of wallpaper, and the preparation process comprises the following steps: coating the surface of a base paper layer with a polyurethane copolymer with negative ion powder, and performing extrusion compounding in an isothermal static pressure manner to form a middle layer; an antibacterial wear-resistant component is sprayed on the surface of the middle layer, and is cured by ultraviolet irradiation to form an outer layer, so that the multifunctional ecological anion environment-friendly wallpaper consisting of the base paper layer, the middle layer and the outer layer is formed; zinc oxide and tourmaline are mixed and subjected to ball milling, and negative ion powder is obtained; grafting the negative ion powder with a silane coupling agent and then combining the negative ion powder with polyurethane to obtain a polyurethane copolymer with the negative ion powder; graphene oxide and an antibacterial substance are combined to prepare an antibacterial wear-resistant component; according to the technical scheme, the polyurethane copolymer with the negative ion powder improves the negative ion release performance of the wallpaper, the antibacterial and wear-resistant components enhance the antibacterial property and wear resistance of the wallpaper, and the overall comprehensive performance of the negative ion wallpaper is improved.

The invention belongs to the technical field of materials, and particularly relates to a carbon fiber pretreatment method, a carbon fiber pretreatment product and application of a fully-wound gas cylinder. According to the technical scheme, the carbon fibers are subjected to pretreatment and plasma treatment, the surface activity of the carbon fibers is remarkably enhanced, and the interface bonding force between the carbon fibers and a resin matrix is improved by 30%-50%. The durability of the gas cylinder sample in a fatigue test is improved by more than 20%, and the phenomena of interface stripping and layering are avoided. And according to the requirements of the actual application environment, the technical scheme can flexibly adjust parameters such as treatment gas, time and power, and the optimal performance is realized.

The utility model provides a turning and spraying synchronous forming cutter bar, and relates to the technical field of turning and thermal spraying. The turning and spraying synchronous forming cutter bar comprises a turning tool assembly, a powder spraying assembly and a powder supply assembly. The turning tool assembly comprises a turning tool blade and a turning tool bar. The turning tool bar is provided with a first end capable of installing the turning tool blade and a second end far away from the turning tool blade. The powder spraying assembly comprises a spraying head arranged at the first end in a swinging mode, a rotating gear arranged on the turning tool bar in a rotating mode and a rotary knob. The spray head is provided with a spherical gear part used for being meshed with the rotating gear. The knob is connected to the rotating gear and used for driving the rotating gear to rotate so as to drive the nozzle to swing. The powder supply assembly comprises a main box body connected to the spray head through a pipeline, a powder conveying pipeline connected to the interior of the main box body and used for bearing powder, a heater connected to the powder conveying pipeline and a powder feeding barrel connected to the main box body and used for supplying powder to the powder conveying pipeline.

The invention belongs to the technical field of new energy solid oxide fuel cells, and particularly relates to a recoverable PCFC cathode material and a preparation method and a recovery method thereof. The invention provides a novel recoverable PCFC cathode material as well as a preparation method and a recovery method thereof in order to solve the technical problems that the performance of a cell is degraded due to the fact that an existing cathode material of a proton ceramic fuel cell (PCFC) is poor in matching degree with a common electrolyte material and is easy to separate from the common electrolyte material, and a complete PCFC cathode recovery technology is still lacked, and provides a novel recoverable PCFC cathode material and a preparation method and a recovery method thereof. The novel PCFC cathode material has the advantages of high activity, recoverability and the like, the recovery method is simple to operate and low in energy consumption, the recovery rate can reach 100% theoretically, and the novel PCFC cathode material is easy to popularize and use.

The invention relates to the technical field of foaming agents, and discloses a high-temperature-resistant foaming agent and a preparation method thereof. The high-temperature-resistant foaming agent is obtained by adding sulphobetaine modified benzoxazine, melamine benzene sulfonate modified polyoxyethylene ether, lauryl sodium sulfate and a polyvinyl alcohol foam stabilizer into water, stirring and mixing. The benzoxazine structure has relatively high rigidity and stability at a high temperature; sulfobetaine is an ampholytic surfactant and has high foaming capacity, sulfonic acid groups are high in temperature resistance, and the foaming performance and the high temperature resistance of the foaming agent are improved; melamine molecules are not easy to decompose at high temperature, so that the high temperature resistance of the foaming agent is improved; polyoxyethylene ether is a nonionic surfactant and has remarkable surface activity, the sulfonic acid group anions and the polyoxyethylene ether nonionic surfactant play a synergistic role, mixed micelles are formed in an aqueous solution, and the foaming performance of the foaming agent is improved.

The invention provides a preparation method of pressureless sintered boron nitride composite ceramic, and relates to the technical field of ceramic composite material preparation. The method comprises the following steps: carrying out surface modification on boron nitride whiskers by using ethanolamine, and activating hexagonal boron nitride powder in a ball milling tank by using an alkaline solution; the preparation method comprises the following steps: uniformly mixing the boron nitride powder and the boron nitride powder in a mixing tank, carrying out cold isostatic pressing to obtain a cold-pressed green body, and carrying out high-temperature calcination on the cold-pressed green body in an inert atmosphere to finally obtain the boron nitride composite ceramic. According to the invention, the physical property characteristics of the boron nitride whisker are fully utilized, and the boron nitride whisker can be fully combined with the hexagonal boron nitride powder subjected to surface activation during calcination through further chemical surface modification, so that relatively high mechanical strength can be realized only by using one phase of boron nitride on the premise of not introducing other sintering aids; the method has the characteristics of high product purity, low production cost and high mechanical strength.

The invention relates to the field of motor vehicle exhaust purification, and particularly discloses an environment-friendly low-temperature vehicle tail gas treatment fluid and a preparation method thereof. The environment-friendly low-temperature vehicle tail gas treatment liquid is prepared from the following raw materials in percentage by weight: 32.5% of vehicle-grade high-purity urea, 3 to 5% of polyethylene glycol, 2 to 3.5% of glycerol, 5 to 6.5% of octadecanol polyoxyethylene ether, 6.5 to 10% of bacterial cellulose aerogel nano powder and the balance of ultrapure water. The tail gas treatment liquid is safe to use, lower in freezing point, suitable for being used in winter in northern cold regions and better in tail gas treatment effect.

The invention relates to the technical field of oilfield chemistry, in particular to a glycosyl anionic surfactant and a preparation method and application thereof, and the glycosyl anionic surfactant is prepared from glucose, long-chain alkyl primary amine and succinic anhydride sodium hydroxide. The glycosyl anionic surfactant has excellent surface activity, is simple in preparation method, high in product yield, safe and reliable, can be used for oil displacement agents, polymer surface oil displacement agents, emulsifiers, discharge aiding agents, heavy oil viscosity reducers and the like, is wide in application, and meets the green development requirements of oil fields. The acid fracturing discharge aiding agent using the glycosyl anionic surfactant as a raw material can effectively reduce the surface and interfacial tension of an aqueous solution, and meets the technical specification of the acid fracturing discharge aiding agent.

The invention relates to a SiOC modified boron carbide-aluminum oxide composite material and a preparation method thereof. The SiOC modified boron carbide-aluminum oxide composite material comprises a porous structure boron carbide-aluminum oxide material and a SiOC layer coating and modifying the porous structure of the boron carbide-aluminum oxide material and the surfaces of boron carbide and aluminum oxide particles, the porosity of the boron carbide-aluminum oxide material with the porous structure is 20 to 40 percent.

The invention discloses an oxidized crosslinked asphalt coated resin hard carbon negative electrode material and a preparation method thereof. The preparation method comprises the following steps: S1, pre-treating resin to obtain a resin precursor; s2, performing mechanical pulverization, low-temperature pre-carbonization and airflow pulverization treatment on the resin precursor to obtain low-temperature pre-carbonized ground powder; s3, the low-temperature pre-carbonized ground powder is subjected to activation pore forming and high-temperature carbonization treatment, and resin hard carbon is obtained; s4, uniformly mixing the resin hard carbon and the asphalt to obtain a mixture; s5, performing asphalt melting coating and low-temperature oxidation cross-linking treatment on the mixture to obtain oxidation cross-linked asphalt coated resin hard carbon; s6, performing high-temperature carbonization treatment on the oxidized cross-linked asphalt coated resin hard carbon to obtain coated hard carbon; and S7, carrying out post-treatment on the coated hard carbon to obtain the oxidized crosslinked asphalt coated resin hard carbon negative electrode material. The oxidized cross-linked asphalt coated resin hard carbon negative electrode material has a relatively low specific surface area, and the first reversible capacity and the initial coulombic efficiency of a battery can be remarkably improved.

The invention relates to the technical field of rare earth hydrometallurgy and rare earth smelting separation, in particular to a green and efficient defluorination process for carbonate ore rare earth feed liquid. The technical problems that in the prior art, due to the fact that the fluorine content in primary liquid of an acid dissolution procedure needs to be strictly controlled, three phases can be extracted, operation of a tank body is affected, the productivity is reduced, and products are unqualified are solved. According to the technical scheme, the green and efficient fluoride removal process for the carbonate ore rare earth feed liquid comprises the following steps: step 1, modifying aluminum oxide; step 2, acid dissolution; step 3, adsorbing and removing fluorine; 4, removing fluorine by using a filter column; step 5, washing process; and step 6, regeneration. In the whole technological process, the loss of aluminum oxide is low, the aluminum oxide is regenerated and recycled, new impurities are not introduced, the introduced aluminum can be removed in the pH increasing process, the method is green and efficient, redundant technological steps are not added, and the economic benefit is remarkable.

The invention relates to the field of plant growth regulators, in particular to an ultramicro-granulated energy-gathered humic acid composite preparation which is prepared from the following raw materials in parts by weight: 50-80 parts of ultramicro-granulated energy-gathered humic acid, 10-30 parts of nanoscale metal oxide, 5-20 parts of a microbial agent, 1-10 parts of a plant growth regulator and 5-15 parts of a slow release agent. According to the invention, ultrafine particle shaped humic acid, nano-scale metal oxide, a microbial agent, a plant growth regulator and a slow-release agent are organically combined. The effect of the soil conditioner is far better than that of a single component or a traditional soil conditioner.

The invention belongs to the technical field of precious metal electronic paste, and particularly relates to a preparation method and application of submicron spherical gold-platinum-palladium alloy powder used for being matched with low-temperature co-fired ceramics. The preparation method comprises the following steps: mixing a tetrachloroauric acid solution, a hexachloroplatinic acid solution and a tetrachloropalladium (II) acid solution to obtain a gold-platinum-palladium mixed solution; the gold-platinum-palladium mixed solution, the dispersing agent solution and the modified reducing agent solution are mixed for a second time, after a reduction reaction is conducted, static settlement and solid-liquid separation are conducted in sequence, obtained solids are washed and dried in sequence, and the obtained submicron spherical gold-platinum-palladium alloy powder used for being matched with the low-temperature co-fired ceramic has the advantages of being uniform in particle size, free of agglomeration, high in dispersity and the like. After low-temperature co-firing with a ceramic substrate, the substrate has the characteristics of flatness, no bubble, excellent weldability and soldering resistance, good batch stability and the like.

The invention relates to the technical field of fire extinguishing agents, and discloses a fluoride-free anti-solubility foam fire extinguishing agent and a preparation method thereof.The fluoride-free anti-solubility foam fire extinguishing agent comprises a hydrocarbon surfactant, a carboxyl modified organosilicon surfactant, a foam stabilizer, a cosolvent, water and a pH regulator; the carboxyl modified organic silicon surfactant is obtained by modifying an organic silicon surfactant by using maleic anhydride; the foam stabilizer contains xanthan gum and a component A, according to the invention, the organosilicon surfactant is modified, so that the obtained carboxyl modified surfactant has good surface activity and water solubility; xanthan gum and a component A (polyethylene oxide-polypropylene oxide-polyethylene oxide and other substances) are compounded to serve as a foam stabilizer, so that the foam stability and the anti-dissolving performance can be improved, and the foam stabilizer also has temperature-sensitive-thermal response performance; under the combined action of the components, the fire extinguishing agent provided by the invention has excellent fire extinguishing performance and can quickly extinguish non-polar fuel and polar fuel.

The invention provides refractory concrete and a preparation method thereof, and belongs to the technical field of concrete. The preparation method comprises the following steps: modifying basalt fiber, modifying granite stone powder, grafting and mixing. The step of modifying the granite stone powder comprises the following steps: putting the granite stone powder into an ethanol solution, adding sorbitol laurate and polyoxyethylene sorbitan monolaurate, stirring at the stirring temperature of 46-50 DEG C, uniformly stirring, adding threonine, carrying out ball milling treatment for 26-30 minutes at the ball milling rotating speed of 114-125rpm according to the ball-to-material ratio of (3-5): 1, and after the ball milling is finished, cooling to room temperature to obtain the modified granite stone powder. Filtering and drying to obtain modified granite stone powder; the particle size of the granite stone powder is 135 to 145 nm; the mass concentration of the ethanol solution is 45-50%; the mass ratio of the granite stone powder to the ethanol solution to the sorbitol laurate to the polyoxyethylene sorbitan monolaurate to the threonine is (8.3 to 8.7) to (90 to 97) to (1.0 to 1.2) to (1.1 to 1.5) to (4.5 to 4.9); the prepared refractory concrete is high in strength, excellent in water permeability resistance, good in high-temperature corrosion resistance and low in linear shrinkage rate.

The invention discloses a three-sludge treatment agent and a preparation method thereof, and belongs to the technical field of oily sludge treatment, the three-sludge treatment agent comprises a treatment agent A and a treatment agent B. The treatment agent B comprises the following raw materials by mass: 30-40 parts of polyacrylamide, 8-10 parts of modified attapulgite clay, 5-6 parts of a compound, and 40-55 parts of deionized water. The modified attapulgite clay is strongly combined with protective films at oil-water and oil-sludge interfaces in the oil sludge through electrostatic force, hydrogen bonds and hydrophobic interaction, the protective films at the oil-water and oil-sludge interfaces are destroyed, oil drops are released and coalesced to form an oil phase, and separation of oil, water and sludge is achieved; positive charges carried in the modified attapulgite clay can be adsorbed to the surfaces of sludge particles with negative charges to be settled and separated out; carboxyl groups contained in the modified hemicellulose can be combined with hydrophilic groups of sophorolipid to form stable mixed micelles, so that the situation that the sophorolipid is easily influenced by the environment to lose efficacy, and oil drops are regathered and precipitated is avoided.

The invention relates to the technical field of powder coatings, in particular to high-fluidity superfine molding powder and a preparation method thereof. The high-fluidity superfine plastic powder comprises the following components in parts by weight: 40-50 parts of epoxy resin, 15-25 parts of a curing agent, 2-4 parts of a catalyst A, 3-5 parts of a plasticizer, 5-8 parts of polyacrylic acid and / or polyacrylate, 3-5 parts of a silane coupling agent, 10-20 parts of filler and 4-6 parts of other auxiliaries, the curing agent at least comprises a fluorine modified amine curing agent; and the median particle size D50 of the powder coating is 10-20 [mu] m. The powder coating adopting the epoxy resin / fluorine-modified amine curing agent system has better flowability and uniformity, charged powder particles can be guided to the surface of a workpiece under the action of an electric field to form a uniform thin coating, the powder particles are easier to carry charges with the same polarity, repulsive force among the particles is increased, and the powder coating can be applied to the surface of the workpiece. Uniform dispersion of powder particles can be kept, and the phenomenon of particle agglomeration is reduced.

The invention discloses a method for preparing a graphene dispersion liquid by using a gemini surfactant in combination with a sanding process, and belongs to the technical field of graphene. Adding graphene into the gemini surfactant solution, carrying out pre-dispersion, and sanding the obtained graphene aqueous solution to obtain the graphene dispersion liquid. The method provided by the invention can realize efficient dispersion of graphene, is good in stability, safe and environment-friendly, remarkably simplifies the subsequent processing technology of the material, and has important practical significance and industrial potential.

The invention discloses a polyphenylene sulfide fiber pps filter bag, and relates to the technical field of filter materials. The invention discloses a preparation method of a polyphenylene sulfide fiber pps filter bag, which comprises the following steps: carrying out melt extrusion granulation on polyphenylene sulfide and modified silicon dioxide to obtain granules; carrying out melt-blowing spinning, heat setting and hot rolling on the granules to obtain a pps filter bag; the modified silicon dioxide is obtained by modifying aminated mesoporous silicon dioxide with ethylenediamine tetraacetic anhydride and then carrying out epoxy treatment with epichlorohydrin. The prepared modified silicon dioxide is added into polyphenylene sulfide for granulation and melt-blowing treatment, the obtained polyphenylene sulfide fiber has the advantage of being good in mechanical property, the prepared polyphenylene sulfide fiber is used for preparing a pps filter bag, the prepared filter bag is applied to filtering treatment of high-temperature flue gas, the advantages of oxidation resistance and cross-linking resistance are achieved, and the application prospect is wide. And high filtering precision and trapping effect are achieved when smoke is filtered in a hot oxygen environment.

The invention belongs to the technical field of oil exploitation foam plugging agents, and particularly relates to nano-modified CO2 multi-chain alkyl amidine, a CO2 response foam plugging agent, a preparation method and application. The CO2-responsive multi-chain alkyl amidine provided by the invention is obtained by electrostatic adsorption of an active adsorption center (tertiary carbon or tertiary nitrogen) of the multi-chain alkyl amidine and part of negatively charged nano silicon dioxide-calcium carbonate, is sensitive in stimulation response to CO2, has good foaming amount, foam stability and temperature and salt resistance, is environment-friendly and easy to degrade, and has a good application prospect. The foam plugging agent can avoid pollution of an oil layer and plugging of a stratum and can be used for preparing a CO2 response foam plugging agent.

The invention discloses a warm mix asphalt mixture and a preparation method thereof, and the warm mix asphalt mixture comprises the following components in parts by mass: 5-7 parts of pretreated SBS asphalt, 25-30 parts of modified fine aggregate, 45-60 parts of modified coarse aggregate, 8-12 parts of filler, 1-2 parts of warm mix agent, 2-4 parts of additive and 0.02-0.05 part of accelerant. The preparation method comprises the following steps: heating the pretreated SBS asphalt to 110-130 DEG C, sequentially adding the warm mixing agent and the additive in a stirring state, stirring, shearing, adding the accelerant, and then adding the modified fine aggregate, the modified coarse aggregate and the filler; the asphalt mixture disclosed by the invention is low in mixing temperature, the obtained asphalt mixture is resistant to aging, and the structural strength, the low-temperature performance, the salt corrosion resistance and the like of the asphalt mixture are all remarkably improved.