522 results about "Chemical activity" patented technology

The invention belongs to the technical field of wafer processing, and discloses a multi-section high-flatness wafer cutting method which comprises the following steps: S1, wafer pretreatment and stress buffer layer preparation; s2, performing layered rough cutting by using a diamond blade; s3, plasma fine cutting and interface repairing; s4, performing multi-layer cooling and surface polishing; and S5, surface quality closed-loop detection is carried out. According to the method, copper layer residues and resin carbonization defects are synchronously eliminated. Cryogenic treatment induces lattice reconstruction through ultrafast phase change and blocks a chain reaction of dislocation defects, so that the intrinsic mechanical strength of the material is recovered, and a chemical mechanical polishing system activates the self-repairing characteristic of the material while removing a sub-surface damaged layer through the synergistic effect of abrasive chemical activity and mechanical shearing force, so that an atomic-scale smooth interface is formed, and the self-repairing performance of the material is improved. A closed-loop detection system depends on multi-dimensional data fusion and ion beam fixed-point repair, accurate positioning and performance recovery of cross-scale defects are achieved, and the electrical integrity of a chip functional area is ensured.

The invention relates to a method for isolating a biomolecule. A liquid sample comprising the biomolecule is contacted with an electrically conductive surface. The surface carries a chemical modification facilitating retention of said biomolecule, or an electrical retention potential is applied to said surface. The biomolecule is released by applying a voltage to the surface. The invention further relates to a device comprising a chamber configured for receiving a liquid sample, wherein a first surface of said chamber is a working electrode formed by a high-surface, electrochemically active material embedded in a non-electrically conductive polymer matrix. The device further comprises a counter electrode and connections to a voltage source. The invention further relates to a device and method for loading an extracellular vesicle with cargo molecules.

The invention discloses a plasma surface activation pre-bonding-femtosecond laser connection integrated process, belongs to the technical field of advanced dissimilar material precision connection, and particularly relates to a multi-material interface efficient connection method based on plasma surface activation pre-bonding and femtosecond laser processing. The method is suitable for high-strength and low-thermal-damage heterogeneous bonding of transparent materials (such as glass, quartz and sapphire) and transparent materials or metal materials (such as titanium alloy, stainless steel and invar alloy). According to the method, interface atomic-scale cleaning and chemical activity regulation and control are achieved through plasma activation, interface connection of the two materials is induced by combining the femtosecond laser ultrafast nonlinear effect, and the bottlenecks that in a traditional connection technology, optical contact depends on a mechanical clamp, and heat input is uncontrollable are broken through; and an innovative solution is provided for cross-material interface functional manufacturing in the fields of photoelectric device packaging, optical-electronic integrated systems and the like.

The invention relates to a honeycomb catalyst for CO and NOx synergistic coupling removal and a preparation method, the catalyst takes nano TiO2-CeO2 as a carrier, and the surface of the carrier is loaded with an active component; the active component comprises a main catalyst and an auxiliary catalyst, the main catalyst is LaCuOx active powder, and the auxiliary catalyst is SmFeOx active powder. According to the present invention, the active material of the conventional catalyst is changed, and the carrier performance of the conventional catalyst is modified, such that the catalyst has good chemical activity and good thermal stability so as to achieve the purpose of stable and synergistic CO removal and NOx removal; meanwhile, the catalyst material is high in mechanical strength and long in chemical life, and the water resistance and the sulfur resistance of the catalyst material are also verified.

The invention discloses a synthesis method of a hydrazine dicarboxylate modified cerium dioxide abrasive, and belongs to the technical field of precise polishing materials. The method comprises the following steps: taking cerous nitrate as a raw material, and preparing a cerous carbonate precursor through an ammonium carbonate precipitation reaction; and grinding and calcining the obtained precursor and hydrazine dicarboxylate to obtain the CeO2 grinding material with the surface rich in oxygen vacancies. And Ce < 4 + > can be partially reduced into Ce < 3 + > by reducing fragments generated by decomposition of the hydrazine dicarboxylate in the calcining process, so that an oxygen vacancy structure is formed through induction, and the chemical activity and the reaction rate of the abrasive are improved. The obtained grinding material shows excellent performance in chemical mechanical polishing (CMP) of K9 glass, the material removal rate (MRR) is increased by about 3.6 times compared with that of unmodified CeO2, the surface roughness (Ra) is reduced to about 0.16 nm or below, and grinding material particles are good in dispersity and less in agglomeration. The used hydrazine dicarboxylate is stable, low in toxicity and mild in reaction, and the particle size can be prevented from excessively growing while the high oxygen vacancy concentration is kept.

The invention relates to the technical field of biomedical materials, and provides a preparation method and application of cross-linked carboxymethyl cellulose. The preparation method comprises the following steps: S1, dissolving anhydrous calcium chloride in absolute ethyl alcohol, sterilizing and filtering to obtain a sterile calcium chloride solution; s2, adding the dehydrated and purified sodium carboxymethyl cellulose into a sterile calcium chloride solution, and stirring for reaction; s3, after the reaction is finished, suction filtration is performed, filter residues are collected and washed, residual calcium chloride is removed, then vacuum drying is performed, and cross-linked carboxymethyl cellulose is obtained. The cross-linked carboxymethyl cellulose and sodium carboxymethyl cellulose have high consistency in chemical activity, physiological and biochemical activity, biocompatibility and safety risk, but in physical performance, the cross-linked carboxymethyl cellulose is hydrogel fiber, is insoluble in water, can more remarkably maintain the volume of a filling part, and is longer in duration time, so that the cross-linked carboxymethyl cellulose is more stable in filling. And the effects of instant filling and long-acting filling of the microsphere-containing surface filling agent are realized.

The invention belongs to the technical field of water electrolysis hydrogen production, and particularly relates to a catalyst for water electrolysis hydrogen production and a preparation method and application thereof. The catalyst for hydrogen production through water electrolysis comprises a CuO / Cu2O heterojunction structure doped with a metal element X, wherein the metal element X is selected from nickel, iron or a composition of the nickel and the iron. According to the preparation method, a chemical bath deposition method and a thermal chemical treatment method are adopted, and the X-doped CuO / Cu2O heterojunction (X-CuO / Cu2O) rich in oxygen vacancies is constructed on foamy copper. The catalyst has excellent catalytic activity under an alkaline condition, has a small Tafel slope value in HER, OER and MOR reactions, and is fast in reaction kinetics; the charge transfer resistance is small in the water electrolysis process; the electrochemical surface area and the double-electric-layer capacitance Cdl are relatively large, and the electrochemical active area is large; and the stability is lasting, and constant electrolysis lasts for at least 48 hours.

The invention relates to a composite material with interlaminar toughening particles and a method of making the same. In particular, a fiber reinforced polymer composite structure having chemically active thermoset particles located in interlayer regions between adjacent reinforcing fiber layers, and a method of making the same, are disclosed.

The invention discloses a preparation method of a self-cooling and self-cleaning nano coating for photovoltaic glass, and belongs to the technical field of preparation of self-cleaning coatings. Preparing a plant solution from ficus pandurata and ficus elastica; the preparation method comprises the following steps: mixing titanium dioxide and antimony oxide to prepare titanium dioxide-antimony oxide composite nanoparticles, and uniformly mixing the titanium dioxide-antimony oxide composite nanoparticles with petroleum ether, titanium phosphate, potassium permanganate and sodium peroxide to obtain a first solvent; preparing hollow silicon dioxide-stannic oxide composite nanoparticles from hollow silicon dioxide and stannic oxide, and uniformly mixing the hollow silicon dioxide-stannic oxide composite nanoparticles with acetone, sodium bicarbonate and ethanol to obtain a second solvent; and uniformly mixing the first solvent and the second solvent, adding isopropanol and deionized water, and uniformly stirring with the plant solution and the binder to obtain the self-cleaning nano coating liquid. The material of the nano-coating has the characteristics of high surface energy, high chemical activity, small size effect and the like, so that the nano-coating makes very sensitive response to physical environments such as light, heat, electricity and the like, and the self-cleaning effect is achieved.

The invention relates to a bipolar plate for an electrochemical system, comprising a first separator and a second separator arranged one on top of the other, the first separator having a first electrochemically active surface for conducting a first fluid on a side facing away from the second separator; the second separator has a second electrochemically active surface for conducting a second fluid on a side facing away from the first separator; wherein the first electrochemically active surface and the second electrochemically active surface overlap each other and form an active region of the bipolar plate in the overlapping region, and wherein the separators are bonded together in the active region by means of a weld pattern having non-uniformly distributed welds.

The utility model provides an electronic device which comprises a first structural member and a second structural member, the first structural member comprises a first metal matrix, the second structural member comprises a second metal matrix and a decoration layer arranged on one side of the second metal matrix, and the first metal matrix is electrically connected with the second metal matrix. The corrosion potential of the first metal matrix is lower than that of the second metal matrix; an insulating layer is further arranged on the side, away from the second metal base body, of the decorative layer, the insulating layer is a transparent or semitransparent layer, and the impedance of the insulating layer is larger than or equal to 2000 ohms. The insulating layer is arranged on the decorative layer on the second metal matrix with high corrosion potential, so that a potential difference caused by a closed loop formed between the metal matrixes with different chemical activities can be prevented in a sweat environment or a salt mist environment, and the probability of electrocorrosion of the first metal matrix with low corrosion potential is further reduced; and the long-term use requirement of the electronic equipment is well met.

A fluid sampling tool is locatable in a borehole for sampling formation fluid including a chemically active component from a formation. The fluid sampling tool includes a sample chamber including a fluid inlet and an interior, wherein the interior includes a substrate and a reagent attached to the substrate, and wherein the reagent is configured to react with the chemically active component of the formation fluid to form a reaction product. The fluid sampling tool also includes a pump operable to pump a sample of the formation fluid in from the formation through the probe and into the sample chamber. A formation fluid sample flows into the sample chamber and a chemically active component of the formation fluid sample reacts with the reagent to form the reaction product from which a presence and concentration of the chemically active component in the formation fluid sample is determinable

The invention discloses zwitterion co-doped CeO2 abrasive particles and a preparation method and application thereof.The preparation method includes the steps that a cerium source and a soluble carbonate precipitator are subjected to an aging reaction to obtain a cerium-based precursor, and the cerium-based precursor, fused salt, metal ions and a fluorinating agent are mixed and then roasted to obtain the zwitterion co-doped CeO2 abrasive particles; the synthesis method is simple, the size is controllable, the particle size distribution is uniform, and the spherical-like zwitterion co-doped CeO2 abrasive particles are obtained; the co-doped CeO2 abrasive particles have excellent photo-assisted chemical mechanical polishing performance; when the polishing solution prepared from the sphere-like co-doped CeO2 abrasive particles synthesized by the method is used for processing the surface of quartz glass, the material removal rate reaches 988.69 nm / min, and a high material removal rate is obtained due to the fact that the co-doped CeO2 abrasive particles synthesized by the two-step method shorten the forbidden bandwidth and have high chemical activity, so that the material removal rate is favorably improved.

The present invention provides an aqueous suspension agrochemical composition showing a suppression of a crystal growth during storage and a bubble generation during dilution. The present invention provides also an aqueous suspension agrochemical composition comprising (a) Inpyrfluxam, (b) one or more agrochemically active ingredients having a melting point of 50 °C or high (excluding inpyrfluxam), (c) a lignin sulfonate, and (d) a polyoxyalkylene aryl phenyl ether phosphoric acid ester salt.

The present invention relates to an agrochemical composition comprising an agrochemical active ingredient and a cleaning composition comprising a cleaning additive, each further comprising at least one novel graft polymer comprising a polymer main chain (A) as a graft matrix having grafted polymer side chains (B) thereon. The polymer side chain (B) is obtainable by polymerization of at least one vinyl ester monomer (B1) and optionally a further monomer. The polymer backbone (A) comprises a polyalkylene oxide-derived moiety and a moiety derived from a lactone and / or a hydroxy acid, which moieties are mixed such that the polymer backbone contains ester functional groups within the polymer chain. The graft polymers of the compositions of the invention have been found to be suitable as dispersants for pesticidal agents in agrochemical compositions, and also suitable in cleaning compositions for improving cleaning properties. In addition, the graft polymer typically exhibits a suitably high degree of biodegradability and thus allows for a more environmentally friendly formulation. The graft polymer itself and its production are also claimed.

The invention provides an amorphous conjugated coordination polymer aerogel material as well as a preparation method and application thereof. The method comprises the following steps: firstly, mixing a metal salt solution and a conjugated organic ligand solution, then heating the mixed solution to promote coordination assembly and induced crosslinking to prepare conjugated coordination polymer wet gel, and then drying to obtain crystalline conjugated coordination polymer aerogel; and carrying out ultraviolet radiation treatment on the obtained crystalline conjugated coordination polymer aerogel to finally obtain the amorphous conjugated coordination polymer aerogel. The amorphous conjugated coordination polymer aerogel material prepared by the invention has the advantages of flexible and adjustable molecular structure, unsaturated coordination metal monatomic active sites, high electrochemical activity and the like. In addition, the preparation process is simple and easy to operate, and the obtained amorphous conjugated coordination polymer aerogel material is good in performance and wide in application prospect.

The invention relates to the technical field of batteries, and discloses a method for modifying an electrode for an all-vanadium redox flow battery through electro-deposition, and the method comprises the following steps: step 1, preparing an electrode solution; 2, preparing a graphite felt electrode; and step 3, assembling the battery. 2-methylimidazole, cobalt nitrate and zinc nitrate are dissolved and mixed to form a solution containing metal ions, the metal ions are embedded into the surface of the graphite felt in the electro-deposition process to form a coating layer, the surface property is enhanced, CHI660e is used for performing an electrochemical performance test, and the electrochemical performance of the graphite felt is greatly improved. The actual electrochemical activity of the modified graphite felt electrode can be evaluated, whether the hydrophilicity and conductivity of the graphite felt electrode are remarkably improved or not is verified, and the beneficial effects that the graphite felt is used as the electrode, the graphite felt has the hydrophilicity, and the electrochemical activity of the graphite felt is improved are achieved.

The invention discloses an O3-type high-capacity high-stability high-entropy sodium ion battery positive electrode material, which is characterized in that the molecular formula is NaaMxNyRzO2, M is a metal atom set for providing capacity, M is a FeNiCuCo or AlNiCuCo atom set, N is a metal atom set for increasing voltage, N is a ZnLiSb atom set, R is a metal atom set with a stable structure, R is a MnTiMg atom set, 0.8 < = a < = 1, 0.45 < = x < = 0.55, 0.1 < = y < = 0.2, 0.3 < = z < = 0.4. A metal atom set for providing capacity, a metal atom set for improving voltage and a metal atom set for stabilizing a structure are effectively combined together, so that the stability, the mechanical strength and the chemical activity of the material are enhanced, the diffusion degree of electrons / ions in the material is properly restrained, and the overall performance stability of the battery is improved.

According to the phosphogypsum-waste concrete composite cementing material for the road and the preparation method of the phosphogypsum-waste concrete composite cementing material, waste concrete recycled powder and phosphogypsum are compounded for use, and the multi-level process synergistic effect of specific microbiota treatment, airflow suspension aggregate, a modifier and the like is achieved; and the micro powder is obviously changed in particle morphology, chemical activity and structural characteristics. The obtained cementing material is more uniform in particle, smooth in surface and more compact in structure, and impurities are reduced; the internal potential volcanic ash activity is excited, the chemical activity is obviously improved, and the material can better participate in hydration reaction; more stable and firmer combination with other road building materials is formed, and the durability and mechanical property are remarkably enhanced, so that the overall stability and the service life of a road are improved, and the cement is completely replaced to be applied to road engineering. And meanwhile, the reduction and recycling application of the phosphogypsum and the waste concrete regenerated powder is realized.

The invention discloses a preparation method of plasma activated water based on a micro-nano bubble synergistic effect, and mainly solves the technical problems that the generation efficiency of liquid-phase active particles in the plasma activated water prepared by the existing method is low, the chemical activity of the plasma activated water is difficult to maintain and the like. The preparation method comprises the following steps: introducing micro-nano bubbles into pure water until the pure water is saturated to obtain micro-nano bubble water; then performing plasma activation treatment on the micro-nano bubble water within 3 minutes to obtain plasma activated water based on the micro-nano bubble synergistic effect; the gas adopted by the micro-nano bubbles is one of air, oxygen, nitrogen or helium. The chemical activity of the plasma activated water is enhanced, the maintenance time of the activity of the activated water is greatly prolonged, efficient production and long-acting storage of the plasma activated water are facilitated, and the method has great significance in biomedical application of the plasma activated water.

The invention discloses a vanadium manganese sodium phosphate positive electrode material with a sodium-site high-entropy structure and a preparation method, and belongs to the technical field of sodium ion batteries, the chemical general formula of the positive electrode material is Na (4-x-y) MxNyVMn (PO4) 3, M is at least three of Li < + >, K < + >, Rb < + > and Cs < + >, and N is at least two of Be < 2 + >, Mg < 2 + >, Ca < 2 + >, Sr < 2 + > and Ba < 2 + >; according to the method, Na < + > / vacancy ordered and charge ordered structures formed by the crystal during charging and discharging are inhibited through disordered distribution of multiple element atoms at sodium ion sites, structural changes caused by Na < + > intercalation and deintercalation are reduced, meanwhile, the high-entropy elements occupying the sodium sites also play a role of supporting columns on the crystal structure, and all the elements are beneficial to stabilizing the crystal structure; on the other hand, due to the high-entropy elements, lattices are locally distorted, local disorder is caused, an electronic band gap and a sodium ion diffusion barrier can be reduced, the conductivity and ion diffusion kinetics of the material are improved, more importantly, Na (1)-O bonds are effectively weakened by the high-entropy elements at the sodium site, the electrochemical activity of sodium ions at the Na (1) site is activated, and the electrochemical activity of the sodium ions at the Na (1) site is improved. Sodium ion diffusion kinetics and specific capacity are promoted.

The present invention provides a method for testing the electrochemical active area of ​​an electrode, comprising the following steps: S1: preparing a battery with a three-electrode structure; S2: performing cycle activation on the battery; S3: performing an EIS test on the battery to obtain an EIS test curve; S4: performing equivalent circuit fitting using simulation software based on the curve obtained by the EIS test and calculating the double-layer capacitance C according to a formula dl #imgabs0#Where f is the frequency, Z” is the imaginary component of EIS, and n is the degree of non-ideal behavior. S5: Calculate the electrochemically active area ESCS of the electrode using the formula: #imgabs1#Where ECSA is the electrochemical surface area (cm) contained in each geometric area 2 cm ‑2 ), C*=60μF cm ‑2 (surface capacitance of a smooth surface), A is the geometric area of ​​the electrode (cm 2 The method for testing the electrochemically active area of ​​an electrode provided by the present invention overcomes the defect that the existing method for testing the electrochemically active area of ​​an electrode is easily interfered by external factors, and improves the accuracy, reliability and reproducibility of the method for testing the electrochemically active area of ​​an electrode.

A photocatalytic sterilization technology is a technology for killing microorganisms such as bacteria, viruses and the like by utilizing active substances generated by a specific material under an illumination condition. The technology mainly depends on the performance of photocatalytic materials, especially semiconductor materials such as titanium dioxide (TiO2). When the photocatalyst is irradiated by light with a specific wavelength, electrons in the material are transited from a valence band to a conduction band to form electron-hole pairs. The electrons and holes have very high chemical activity, can react with water or oxygen to generate free radicals with strong oxidizing capacity, and can destroy cell walls or cell membranes of microorganisms to cause leakage of substances in cells, so that the sterilization effect is achieved. The invention provides a TiO2 (at) Ag / Ti-MOF functional material aiming at the problems of low light utilization rate and insufficient reaction active sites of a TiO2 photocatalytic material. According to the TiO2 (at) Ag / Ti-MOF functional material, Ag-MOF is constructed on the basis of a Ti-MOF framework, controllable slow release of Ag ions is achieved, and the long-time effective sterilization effect is achieved.

The invention discloses a super-smooth anticorrosive coating for an overhead transmission conductor and a preparation method and application thereof.The super-smooth anticorrosive coating for the overhead transmission conductor is prepared from, by mass, 25-50 parts of polyvinyl fluoride resin, 12-50 parts of epoxy resin, 5-10 parts of butyl acetate, 5-10 parts of graphite fluoride, 5-8 parts of molybdenum disulfide, 5-20 parts of superfine aluminum oxide and 6-25 parts of zinc powder. And 1-12.5 parts of zinc phosphate. Surface modification and dynamic coating are carried out on the super-smooth filler particles, so that a layer of chemical inert film is formed on the surface of the filler, and the friction force between the particles and between the particles and a matrix is reduced. Meanwhile, a multi-stage dispersion technology is adopted, low-speed stirring is firstly carried out for primary mixing, and then gradual speed increasing is combined with ultrasonic treatment, so that aggregates of the filler can be fully destroyed, and a stable dispersion state is formed. The treatment can form a highly uniform super-lubricity network structure, improve the interface bonding between the filler and the matrix resin, reduce micropores in the coating and reduce the friction coefficient of the coating, so that the coating shows super-lubricity. And through ultrasonic oscillation treatment, preservative particles reach the nanoscale, the surface area and chemical activity of the particles are increased, the particles and matrix resin form more stable combination, and the anticorrosive effect of the coating is effectively improved.

Described herein are electrochemically active-material structures comprising silicon and one or more inert elements, such that these inert elements are chemically and / or atomically dispersed. Also described are negative battery electrodes and lithium-ion electrochemical cells comprising such electrochemically active-material structures as well as methods of fabricating such structures, electrodes, and lithium-ion electrochemical cells. Some examples of atomically-dispersed inert elements include, but are not limited to, hydrogen (H), carbon (C), nitrogen (N), and chlorine (Cl). Unlike silicon, inert elements do not interact with lithium at an operating voltage of the negative battery electrode and therefore do not contribute to the overall cell capacity. At the same time, these inert elements help to mitigate silicon swelling by operating as a mechanical buffer, support structure, and / or additional conductive pathways. Such electrochemically active-material structures can be formed by reacting (chemically or electrochemically) one or more precursors that include silicon and corresponding inert elements.

The invention discloses a modified fly ash adsorbent for carbon dioxide capture and a preparation method and application thereof.The preparation method comprises the steps that original fly ash is ground into fly ash fine powder, the fly ash fine powder is subjected to stepped heating fluidization calcination in the N2 atmosphere containing water vapor, then microwave crushing treatment is conducted, and fly ash subjected to physical reaming treatment is obtained; carrying out alkali fusion reaction on the coal ash subjected to physical chambering treatment and alkali at high temperature, then alternately pickling by using two different acids to remove impurities, and carrying out oxidation treatment by using an oxidizing solution to increase surface alkaline sites and chemical activity so as to obtain chemically modified coal ash; loading a functional reagent on the chemically modified fly ash, reacting at a preset temperature, then adding a metal ion solution to carry out ion exchange, and then drying and carrying out hydrophobic modification to obtain the modified fly ash adsorbent. According to the invention, physical-chemical synergistic modification of fly ash is adopted to prepare the adsorbent with high adsorption performance, and the adsorbent is applied to capture of carbon dioxide.

The invention relates to the technical field of composite metal materials, in particular to a silver-coated graphene copper composite material and a preparation method thereof, and aims at solving the problems that traditional silver-coated copper powder is high in silver consumption, copper is oxidized due to the fact that a silver layer is prone to being damaged, and conductivity is insufficient. The method comprises the steps that a graphene coating layer is formed on a copper powder substrate in situ through chemical vapor deposition, and graphene copper powder is obtained; performing etching treatment on the graphene copper powder to controllably expose part of the copper substrate so as to form anchoring points for silver ion deposition; carrying out reduction treatment on the etched graphene copper powder so as to ensure that an anchoring site has chemical activity; in a reductive liquid phase environment, enabling a chemical silver plating solution to react with the graphene copper powder subjected to reduction treatment, and guiding silver ion deposition by utilizing an anchoring point, so as to form a silver coating layer on the surface of the graphene coating layer; and separating and drying the reacted system to obtain the silver-coated graphene copper composite material. The material is better in oxidation resistance and conductivity, and the process is free of waste liquid.

The invention provides a high-weather-resistance powder coating and a preparation method thereof, and belongs to the technical field of powder coatings. According to the invention, a hyperbranched polyester skeleton is constructed through esterification reaction of trimethylolpropane, adipic acid and maleic anhydride, hydroxyl-terminated polyether, pentaerythritol and 2, 4-dihydroxybenzophenone are introduced to adjust flexibility, thermal stability and ultraviolet aging resistance, and allyl glycidyl ether is utilized to improve chemical activity and network stability; phosphorus-containing heterocyclic ring-polynitrogen imide oligomer is generated through substitution reaction and subsequent modification of phosphonitrilic chloride trimer, aniline and ethanolamine, and the coating is endowed with flame retardance, heat resistance and adhesive force. In the preparation of the coating, carboxyl polyester resin and a curing agent are crosslinked to form a three-dimensional network, and filler and auxiliaries such as precipitated barium sulfate, silica powder and bismuth vanadate yellow pigment are combined, so that the mechanical strength, chemical resistance and ultraviolet aging resistance of a coating film are optimized.

The invention discloses a preparation method and application of an efficient composite deep fluorine removal agent, and relates to the technical field of environmental engineering, S1, material selection, S2, material pretreatment, S3, mixed reaction, S4, hydrothermal synthesis, S5, drying and forming, and S6, chemical modification and heat treatment. According to the invention, high-efficiency adsorption materials such as nano aluminum oxide and nano iron oxide are introduced and matched with a biomass material to form a composite adsorption system, so that the adsorption capacity is improved, and the renewability and environmental protection property of the material are enhanced; due to introduction of rare earth elements, the rare earth elements are added as active components, and the selective adsorption capacity of the fluorine removal agent to fluorine ions is enhanced by utilizing the unique electronic structure and chemical activity of the rare earth elements; by adopting a hydrothermal synthesis technology, energy consumption and environmental pollution are reduced, and meanwhile, non-toxic or low-toxicity raw materials are used, so that the safety and sustainability of the preparation process are ensured.

The invention discloses an anti-reflection wear-resistant nano hydrophilic anti-fog lens and a preparation method thereof, and the method comprises the steps: carrying out the injection molding, ultrasonic deep cleaning and surface cleaning treatment of the lens, and obtaining a clean substrate layer; preparing an organic silicon resin hardening liquid, coating the surface of the substrate layer with the organic silicon resin hardening liquid, and curing to obtain an organic silicon resin layer; preparing a nano hydrophilic coating; cleaning the surface of the organic silicon resin layer, keeping the surface dry, and activating by using plasma equipment; and coating the surface of the activated organic silicon resin layer with a nano hydrophilic coating, and then baking at the temperature of 40-120 DEG C for 6-0.5 h to obtain the nano hydrophilic coating. According to the invention, a nano hydrophilic coating containing modified silicon dioxide is adopted to be in covalent bond connection with an active group in the organic silicon resin layer, so that lasting hydrophilic modification of the substrate layer is realized, a water drop contact angle is less than 6 degrees, super-hydrophilicity can be presented without illumination, and the super-hydrophilic group has low chemical activity, is not easy to pollute and is convenient to clean; the service life is long.