62results about How to "Improve surface wettability" patented technology

The invention relates to the field of solar cells, and discloses a buried interface modified trans-perovskite solar cell and a preparation method thereof. The trans-perovskite solar cell structurally comprises a substrate, a conductive layer, a hole transport layer, a perovskite light absorption layer, an electron transport layer and a metal counter electrode which are sequentially layered, the hole transport layer adopts a hole transport material [4-(3, 6-dimethyl-9H-carbazole-9-yl) butyl] phosphoric acid (Me-4PACz), and the hole transport layer adopts a hole transport material [4-(3, 6-dimethyl-9H-carbazole-9-yl) butyl] phosphoric acid (Me-4PACz). According to bottom-buried interface modification provided by the invention, a hole transport material Me-4PACz is modified by adopting a (2-phenethyl) phosphonic acid small molecule material, the modified Me-4PACz hole transport layer has high perovskite layer coverage rate, the preparation process is simple, the efficiency of the assembled solar cell is high, the stability is obviously improved, and the commercial application value is very good.

The invention relates to the technical field of reverse osmosis membranes, in particular to a polyamide reverse osmosis membrane for high-salinity wastewater treatment and a preparation method of the polyamide reverse osmosis membrane. The invention solves the problem that the polyamide reverse osmosis membrane cannot give consideration to both desalination rate and water flux. The polyamide reverse osmosis membrane comprises a polyester non-woven fabric layer, a polysulfone porous layer, a transition layer and a polyamide layer. The polysulfone porous layer is prepared, and the modified pore-forming agent is added to improve the water flux of the reverse osmosis membrane; the hydrophilicity of the reverse osmosis membrane is improved by preparing the transition layer and adding a hydrophilic auxiliary agent when the polyamide layer is prepared; the flux attenuation rate of the polyamide reverse osmosis membrane is reduced by preparing the polyamide layer; the desalination rate of the reverse osmosis membrane is improved by introducing a composite ion complexing agent and graphene quantum dots into the polyamide layer.

The invention discloses a preparation method of a polypropylene coarsened film, belongs to the technical field of preparation of electronic and electrical insulating materials, and particularly relates to preparation of the polypropylene coarsened film. The invention aims to solve the technical problem that the specific preparation process is difficult to regulate and control when the polypropylene coarsened film is prepared at present. By adjusting the heating temperature, the torque, the rotating speed of the motor, the gap between the die head and the machine lip, the temperature of the chilling roller, the casting rotating speed and the winding tension of each area of the extruder, the polypropylene coarsening film which is reasonable in surface appearance and thickness and excellent in dielectric property is obtained, the wettability of the obtained polypropylene coarsening film in insulating oil is good, the dielectric property is excellent, and the service life of the polypropylene coarsening film is prolonged. And the prepared oil-immersed capacitor has good energy storage performance. The polypropylene coarsened film prepared by the invention is mainly used for preparing metallized polypropylene films for oil-immersed capacitors and film capacitors.

The invention discloses a composite additive for a vanadium electrolyte and a preparation method of the composite additive, and relates to the technical field of vanadium batteries. The composite additive is applied to the electrolyte of the vanadium battery, the electrolyte is a positive electrode electrolyte and a negative electrode electrolyte, the concentration of the vanadium electrolyte can be improved, precipitation and crystallization of vanadium ions can be inhibited, and meanwhile, the electrochemical activity of the vanadium battery can be improved. The composite additive comprises a mixture formed by a first component and a second component, the first component comprises at least one of a fluorine-containing compound, oxyacid and oxysalt, and the second component is a surfactant.

The invention belongs to the technical field of polytetrafluoroethylene microporous membranes, and relates to an Al2O3 / PTFE composite microporous membrane and a preparation method and application thereof.The Al2O3 / PTFE composite microporous membrane is composed of Al2O3 nanoparticles and PTFE resin, the porosity is 65%-95%, the thickness is 3-25 microns, the average pore size is 0.10-1.5 microns, the transverse and longitudinal tensile strength is larger than or equal to 20 MPa, and the water contact angle is smaller than or equal to 90 degrees. According to the invention, the Al2O3 / PTFE composite microporous membrane is endowed with good surface wettability and excellent mechanical property by utilizing self-humidifying and in-situ reinforcement of Al2O3 nanoparticles, and the Al2O3 / PTFE composite microporous membrane is mainly applied to a reinforcing material of a proton membrane. The preparation process is simple, and industrial popularization is easy to realize.

The invention discloses a preparation method of a wood-based carbon material for improving the performance of a supercapacitor, and the method comprises the steps: cutting Balsa wood into wood chips, and immersing the wood chips into absolute ethyl alcohol to obtain a natural wood chip sample; lignin is removed, and delignification wood chips are obtained; dissolving cellulose through a high-concentration zinc chloride solution, and separating out regenerated cellulose to obtain a wood sample RC (at) ZnODWx with regenerated cellulose and ZnO growing on the surface; placing the regenerated cellulose wood chips in a tubular furnace to obtain a wood-based graded porous carbon product, obtaining a carbon sample named CRCDWx, and cutting; a wood-based hierarchical porous carbon electrode is used as a positive electrode, a zinc foil is used as a negative electrode, organic gel is used as an electrolyte and a diaphragm, and the CRCDW-based zinc ion hybrid supercapacitor is prepared with a metal shell. The wood-based hierarchical porous carbon material capable of improving the performance of the supercapacitor is prepared, the cost is low, the material has reproducibility, dependence on a traditional electrode material is reduced, environmental pollution is reduced, and a prospect is provided for high-value conversion of wood raw materials and application of the wood raw materials to the high-performance supercapacitor.

The invention discloses MgAl ply rolling composite brazing filler metal and a preparation method and a brazing method thereof, belongs to the technical field of magnesium alloy welding materials, and solves the technical problems that magnesium alloy brazing filler metal prepared through a smelting method is insufficient in welding strength, and the thickness of the brazing filler metal is difficult to reduce through secondary machining before welding. According to the solution, Mg rolled plates and Al rolled plates are manufactured through hot rolling after being staggered and stacked according to an Al rolled plate-Mg rolled plate-Al rolled plate sandwich structure, the lengths and the widths of the Mg rolled plates and the Al rolled plates are the same, the thicknesses of the Mg rolled plates and the Al rolled plates are both 0.4-0.6 mm, the thickness of the MgAl pack rolling composite brazing filler metal does not exceed 500 micrometers, the melting temperature is 437-455 DEG C, and the brazing temperature is 460-500 DEG C. The preparation technology is simple, the low-melting-point eutectic structure of the MgAl ply rolling composite brazing filler metal can be generated in a diffusion mode in the brazing process, and brazing filler metal preparation and brazing processes are achieved in one step.

The invention belongs to the technical field of oil-water emulsion demulsification, and provides a magnetic nano demulsifier as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving polydopamine in a phosphate buffer solution to obtain phosphoric acid polydopamine; the preparation method comprises the following steps: mixing phosphoric acid polydopamine with Fe3O4, and stirring under dark and aerobic conditions to obtain a Fe3O4 and polydopamine compound; and dissolving the compound in a phosphate buffer solution, mixing with block polyether, and stirring under ultraviolet irradiation and aerobic conditions. The invention also discloses the magnetic nano demulsifier prepared by the method and application of the magnetic nano demulsifier in oil-water emulsion treatment. The surfactant is firmly fixed on the surfaces of the magnetic nanoparticles through polydopamine, so that surface activity modification is realized, the surface wettability of the demulsifier is improved, the demulsifier is prevented from falling off, and the repeated utilization rate of the demulsifier is increased. The demulsifier has excellent demulsification efficiency and cyclic utilization performance, and has important application value and development potential in the field of emulsified oil treatment.

The invention relates to the technical field of glass, in particular to a chemical strengthening method of flexible glass and the chemically strengthened flexible glass. The chemical strengthening method of the flexible glass comprises the following steps: pretreating the flexible glass to obtain pretreated flexible glass; the pretreated flexible glass is preheated, and preheated flexible glass is obtained; the preheated flexible glass is placed in chemical strengthening pure sodium molten salt to be subjected to chemical strengthening treatment and then cooled, and chemically strengthened flexible glass is obtained; the pretreatment comprises the following steps: carrying out ultrasonic treatment on the flexible glass in a sodium hydroxide alkaline solution with the concentration of 4-12mol / L; the flexible glass comprises the following raw materials in percentage by mole: 0-3% of Na2O and 8-10% of Li2O. The strength of the flexible glass can be effectively improved, and damage of stress concentration to the surface of the glass can be overcome; the chemically strengthened flexible glass shows excellent performance in bending strength, drop pen impact, 300,000 times of static bending and the like.

The invention provides a preparation method of coal-based activated carbon with high specific capacitance, which belongs to the technical field of carbon materials and comprises the following steps: uniformly mixing raw coal and monopotassium phosphate according to a mass ratio of 1: (2-3), pre-carbonizing at 350-450 DEG C in a muffle furnace in a nitrogen atmosphere, calcining at 750-850 DEG C for 1-2 hours, cooling and washing to be neutral to obtain the coal-based activated carbon with high specific capacitance. The high-specific-capacitance coal-based activated carbon is obtained. The coal-based activated carbon prepared by the invention has the advantages of simple preparation method and high specific capacitance.

The invention discloses a forming and coating process method of high, medium and low strength aluminum-clad steel wires for optical cable accessories, and belongs to the technical field of aluminum-clad steel wire strands for optical cable accessories. The preparation method comprises the following steps: placing the modified steel wire in a wire drawing machine for drawing, washing and drying to obtain the drawn modified steel wire; gluing the aluminum wire on the surface of the drawn modified steel wire to form strands to obtain a semi-finished aluminum-clad steel wire; adding composite gel and carbon fiber to ethanol, stirring evenly to obtain a composite filler; dipping the semi-finished aluminum-clad steel wire into the composite filler, taking it out, drying it, placing it in a continuous extrusion coating machine for extrusion, and winding it after cooling and drying to obtain the initial aluminum-clad steel wire. The initial aluminum-clad steel wire is added to the composite material, stirred, taken out, and dried to obtain the finished aluminum-clad steel wire. The carbon fiber and composite gel in the composite filler interact with each other and are filled to the surface of the modified steel wire, thereby increasing the bonding strength between the aluminum wire and the copper wire, and making the coating more uniform.

The invention discloses a perovskite solar cell, and relates to the technical field of solar cells. The perovskite solar cell comprises a conductive substrate, a hole transport layer, a perovskite light absorption layer, an electron transport layer and a transparent conductive layer which are stacked in sequence, wherein the conductive substrate, the hole transport layer, the perovskite light absorption layer, the electron transport layer and the transparent conductive layer are stacked in sequence; wherein an ionic liquid layer is arranged between the hole transport layer and the perovskite layer, the ionic liquid layer comprises ionic liquid, the ionic liquid comprises imidazole cations and anions, the structural formula of the imidazole cations is shown as a formula I, R1 is selected from C4-C10 alkyl, R2 is selected from C4-C10 alkyl, and R3 is selected from C4-C10 alkyl. And anions are selected from any one of bis (trifluoromethanesulfonyl) imine radical, tetrafluoroborate radical, hexafluorophosphate radical and thiocyanate radical, so that the problem of limited performance improvement of the perovskite solar cell caused by energy level mismatching and interface defects between the hole transport layer and the perovskite layer in the prior art is solved.

The invention discloses a method for determining carbazole and nine halogenated carbazoles in sediments by an internal standard method, and belongs to the technical field of carbazole detection; the determination method comprises the following steps: mixing sediments, internal standard solution, extraction solvent, metal salt and surfactant for ultrasonic extraction to obtain an extract; adding purification material to the extract and obtaining a test solution by purification; and detecting carbazole and halogenated carbazole in the test solution by gas chromatography-tandem mass spectrometry. The invention provides a method for determining carbazole and nine halogenated carbazoles in sediments by an internal standard method, which can not only effectively improve the extraction efficiency of target compounds and reduce the loss in the purification process, but also improve the test efficiency and accuracy.

This invention relates to the field of ion sieve technology, providing a titanium-based lithium-ion adsorbent, its preparation method, and its applications. The invention involves pyrolyzing NH2-MIL-125(Ti), then mixing it with lithium carbonate for calcination, granulating it using an ethylene-vinyl alcohol copolymer as a binder, and finally acid washing to obtain the titanium-based lithium-ion adsorbent. This invention integrates metal-organic framework (MOF)-derived carbon intercalation, nitrogen doping, and polymer-assisted granulation into a single process, preparing a particulate adsorbent with a hierarchical porous structure, strong hydrophilicity, and abundant active sites, showing great potential for industrial applications. Example results show that the adsorbent of this invention, under conditions of pH=12 and 25℃, exhibits a high Li-ion concentration of 24 h. + The adsorption capacity reached 33.95 mg / g. After five cycles of adsorption and desorption, the adsorption capacity could still reach 96.9% of the initial adsorption capacity, and the titanium dissolution loss in each cycle was only about 0.4%.

The present invention provides a photovoltaic cell and a method for making the same, the method comprising: making a hole transport layer on a conductive substrate, the hole transport layer being a metal oxide; setting a preset hydrophilic amino acid solution on the surface of the hole transport layer, and performing a first heating treatment so that the preset hydrophilic amino acid solution forms a modified layer above the hole transport layer; making a perovskite layer above the modified layer so that the amino acid molecules in the modified layer are connected to the perovskite layer through hydrogen bonds; making an electron transport layer and an electrode structure above the perovskite layer. In the present invention, the amino acid molecules in the modified layer can improve the surface wettability of the hole transport layer, reduce the pores and defects in the hole transport layer, reduce light scattering and change the refractive index of the film layer, improve the light transmittance of the photovoltaic cell and the crystallization quality of the perovskite layer, ensure the matching degree of the energy levels between the hole transport layer and the perovskite layer, facilitate the transmission and extraction of holes, and ensure the power generation efficiency of the photovoltaic cell.

The application discloses a kind of service concrete penetration type anti-freezing protective material and preparation method thereof, belong to concrete protection technical field.The composition of the protective material is: organic silicon modified penetration enhancement component 30~60 parts, nano-crystalline component 10~30 parts, microbial self-repairing component 5~20 parts, composite silane coupling agent 2~8 parts, penetration accelerator 1~5 parts, stabilizer 0.5~3 parts, defoaming agent 0.1~1 part, water 10~50 parts.The application constructs "hydrophobic barrier-crystallization densification-microbial self-repairing" triple synergistic protection system, solves the technical bottleneck that existing concrete protective material penetration depth is shallow, long-acting protection stability is poor, has no active crack repair capacity, construction is complicated, and on-site adaptability is poor.The application preparation process is simple, product performance is stable, cost-effective, can long-acting improve the frost resistance of concrete structure in severe cold area.

The application discloses a fireproof and extinguishing material and a preparation method and application thereof, and belongs to the technical field of fireproof and extinguishing materials. The fireproof and extinguishing material solves the problem of poor high-temperature resistance of the existing fireproof and extinguishing materials. The fireproof and extinguishing material is composed of the following components in parts by weight: fly ash 8-24 parts, modifier 0.1-0.5 parts, connecting agent 1-5 parts, inorganic mineral material 15-45 parts, foaming agent 3-8 parts, thickening agent 1-3 parts, flame retardant 0.5-2 parts and water 15-35 parts. The fireproof and extinguishing material can form a more compact structure during extinguishing, and has excellent extinguishing performance.

The invention discloses an anti-inflammatory poly (lactic-co-glycolic acid) anti-adhesion fiber membrane and a preparation method thereof, the preparation method comprises the following steps: A, preparing a micromolecular diol modified poly (lactic-co-glycolic acid) copolymer and poly (lactic-co-glycolic acid) into an electrostatic spinning solution, and preparing a modified poly (lactic-co-glycolic acid) fiber membrane through electrostatic spinning; b, adopting a reversible addition-fragmentation chain transfer dispersion polymerization method to prepare a pH responsive drug-loaded polymer vesicle; and C, spraying the pH-responsive drug-loaded polymer vesicle aqueous solution onto the modified poly (lactic-co-glycolic acid) fiber membrane by adopting an electrostatic spraying method to obtain the anti-inflammatory poly (lactic-co-glycolic acid) anti-adhesion fiber membrane. According to the anti-inflammatory poly (lactic-co-glycolic acid) anti-adhesion fiber membrane prepared by the method, the hydrophilicity of a membrane material is remarkably improved, meanwhile, adhesion and inflammation of tissues at a postoperative wound are prevented, and the comfort of a patient is improved; the pH value of acid generated in the degradation process of the fiber membrane is 5-6.5, membrane holes of the pH-responsive vesicles are just promoted to be opened, the degradation period is shortened, and meanwhile the anti-inflammatory drug is slowly released.

The application provides a modification method of nitrocellulose membrane and application thereof in preparation of microRNA nucleic acid test strips, and relates to the technical field of nucleic acid lateral chromatographic detection.The application provides a modification method of nitrocellulose membrane, which comprises the following steps: treating the nitrocellulose membrane under plasma conditions; the power of the plasma treatment is 25-80 W; the pressure of the plasma treatment is 35-70 Pa; and the time of the plasma treatment is 70-350 s.The modification method of the nitrocellulose membrane can effectively improve the surface performance of the nitrocellulose (NC) membrane, significantly enhance the surface wettability of the nitrocellulose membrane, make the nitrocellulose membrane have strong hydrophilicity, improve the loading capacity of probes, and enhance the stability of probe fixation, so that the cost is reduced and the sensitivity and specificity of the microRNA nucleic acid test strip are improved.

The invention relates to a method for preparing high-specific-capacitance activated carbon by activating bagasse pith through monopotassium phosphate, and belongs to the technical field of activated carbon preparation, and the method comprises the following steps: S1, crushing and drying the bagasse pith; s2, mixing the product in S1, KH2PO4 and deionized water according to a mass ratio of 1: (1-3): (5-15), and performing freeze drying; and S3, putting the product of S2 into a muffle furnace, pre-carbonizing for 0.5-1.5 hours at 350-450 DEG C in a nitrogen atmosphere, calcining for 1-2 hours at 800-950 DEG C, cooling, and washing to be neutral, thereby obtaining the high-specific capacitance activated carbon. The biochar with excellent molecular structure and high specific capacitance is obtained by processing bagasse pith, a new thought is provided for recycling of bagasse pith and preparation of activated carbon with high specific capacitance, and the method has high social value and economic value.

The invention discloses a preparation method of a coal rock polished section, which comprises the following steps: before mixing a coal sample which is crushed to a qualified particle size with an adhesive, carrying out pre-wetting treatment on the coal sample by using water or a dextrin solution, stirring to fully wet coal particles, carrying out suction filtration, drying in the shade, mixing the coal particles with the adhesive, putting the mixture into a mold, drying under a room temperature condition, and carrying out sintering to obtain the coal rock polished section. And grinding and polishing to prepare the coal rock polished section. Compared with a national standard method, the polished section prepared after the coal particles are pretreated through the pre-wetting method is more stable in quality, potholes are not formed in the polished surface, flatness is better, surface roughness is smaller, maceral boundaries are clearer, the method is high in operability, and coal rock properties cannot be affected. Water or a dextrin solution is used for pretreatment so as to eliminate air films on the surfaces of the coal particles, enhance the wettability of the surfaces of the coal particles and fundamentally avoid bubbles and pits in the polished section.

This invention belongs to the field of photovoltaic technology and discloses a modification method and its application for improving the energy level matching of the evaporated copper phthalocyanine / perovskite interface. The method includes: laser etching a conductive glass substrate of a predetermined size; after laser etching, ultrasonically cleaning the conductive glass substrate sequentially with glass cleaning solution, copper propylene, and isopropanol; drying and storing for later use; subjecting the dried conductive glass substrate to ultraviolet-ozone treatment, followed by evaporation to obtain a copper phthalocyanine film; spreading a pre-prepared silane-modified nano-dispersion onto the copper phthalocyanine film, and then annealing to obtain the modified film. This invention utilizes the dehydration condensation reaction between silane hydroxyl groups and surface hydroxyl groups to improve the dispersibility and stability of nanoparticles, resulting in a dense, uniform, and highly covered modification layer on the surface of copper phthalocyanine with a wide bandgap.

The present invention relates to the field of denture base materials, and provides a 3D printing high-strength oral denture base and a preparation method thereof. The denture base is prepared from the following components: titanium oxide composite microspheres coated with chitosan, surface modified boron nitride nanotubes coated with nano-silver particles, acrylic resin, polyetheretherketone, anhydrous ethanol, defoamer, dispersant, and photoinitiator. Preparation method: S1. Disperse fillers, and prepare a uniform mixed solution by ultrasonic and mechanical stirring; S2. Prepare a resin base liquid, add acrylic resin, polyetheretherketone and other materials and stir evenly; S3. Print and form, and use a DLP light-curing 3D printer to print the denture base; S4. Finishing, including demoulding, cooling and surface grinding treatment, finally obtaining a finished denture base. The present invention solves the strength and antibacterial problems of the denture base by combining titanium oxide composite microspheres with chitosan coating layers and surface modified boron nitride nanotubes coated with nano-silver particles, respectively, and has a wide range of application value.

The invention relates to the technical field of photosensitive resin and preparation thereof, in particular to 3D printing ceramic slurry with moisture-proof photosensitive resin and a preparation method of the 3D printing ceramic slurry, the 3D printing ceramic slurry comprises a hydrophobic monomer, the hydrophobic monomer comprises one or more of trimethylolpropane triacrylate, ethoxylated bisphenol A diacrylate and isobornyl methacrylate; the coating also comprises a diluting monomer, a photoinitiator, an auxiliary agent, a hydrophobic filler and ceramic powder. On one hand, by introducing the hydrophobic monomer, the moisture resistance of the photosensitive resin is remarkably improved, and the water absorption rate is reduced from the source; on the other hand, hydrophobic filler nano silicon dioxide is treated; nano silicon dioxide and a silane coupling agent are mixed and stirred to obtain modified silicon dioxide, so that the dispersity and hydrophobicity of the modified silicon dioxide in photosensitive resin slurry are enhanced. The surface wettability and dispersing performance of the ceramic powder are improved, powder agglomeration is reduced, and the uniformity of the slurry is improved.

The invention discloses a preparation method of a modified hexagonal boron nitride filler, which comprises the following steps: firstly, ultrasonically dispersing hexagonal boron nitride powder in ethanol under the help of a wetting dispersant, and then carrying out sol-gel reaction to enable tetraethoxysilane to carry out surface modification on traditional hexagonal boron nitride to obtain the modified hexagonal boron nitride filler. The surface of traditional hexagonal boron nitride is covered with a layer of silica sol, the surface wettability of boron nitride is optimized, the surface roughness is improved, and stacking of filler in the coating is inhibited. Then, urushiol resin is connected to the surfaces of the silica sol particles through a chemical grafting method, so that the modified hexagonal boron nitride can further utilize the corrosion inhibition effect of urushiol to inhibit corrosion of the urushiol to a metal substrate. And drying the mixed mixture dispersion liquid in a rotary evaporator, removing the solvent, grinding, dispersing and sieving to obtain the designed modified hexagonal boron nitride filler, and adding the modified hexagonal boron nitride filler into polymer resin to prepare a composite coating so as to be applied to the field of coating protection.

The invention discloses a welding process for a ceramic bracket and a metal groove, and the welding process comprises the following steps: S1, polishing and cleaning, S2, cutting and assembling, S3, vacuum welding, S4, cooling, and S5, taking and inspection.The welding process for the ceramic bracket and the metal groove solves the problem that connection between a ceramic material and a metal material is difficult due to the difference between physical properties and chemical properties; the method has the advantages of simplicity and convenience in operation, high connection strength, suitability for extreme environments such as high temperature and high pressure and the like, and the metal groove can be fixedly assembled in the groove in the ceramic bracket through the soldering lug, so that the direct contact between the metal dental arch wire and the ceramic base groove is avoided, the friction force of the dental arch wire at the groove is reduced, and the size data and the strength are ensured; the purpose of orthodontic treatment is achieved by adapting to dental arch wires of different specifications, the treatment time is shortened, and the use effect of the product is improved.

The invention discloses a heat-resistant, aging-resistant and impact-resistant water supply pipe and a preparation method thereof, and relates to the field of pipes. The heat-resistant, aging-resistant and impact-resistant water supply pipe comprises, in terms of raw materials, 100 parts by weight of linear low-density polyethylene resin, 4-8 parts by weight of polyphenylene sulfide, 3-8 parts by weight of vinyl-terminated polysiloxane, 8-15 parts by weight of methacryloxy polysiloxane, 1-4 parts by weight of pentaerythritol triacrylate, 8-12 parts by weight of filler and 1-2 parts by weight of antioxidant. In the present application, a PE water supply pipe is prepared by cross-linking and modifying a linear low-density polyethylene resin with vinyl-terminated polysiloxane, methacryloxy polysiloxane and pentaerythritol triacrylate, which can improve the impact toughness of the PE water supply pipe while improving the thermal stability of the PE water supply pipe, thereby obtaining a PE water supply pipe having both heat aging stability and impact toughness.

The present invention discloses a dust suppression liquid that integrates active capture, moisturizing and coagulation, which is used for dust reduction in coal mines. The dust suppression liquid is a composite solution formed by dissolving alum, sulfite and potassium permanganate in water, wherein the mass concentration of alum is 0.02%-0.2%, the mass concentration of sulfite is 0.01%-1%, and the mass concentration of potassium permanganate is 0.01%-1%. The present invention also discloses a dust suppression system and a dust suppression method using the dust suppression liquid that integrates active capture, moisturizing and coagulation. The present invention can generate positive electricity in the dust suppression liquid, increase the positive charge of aluminum hydroxide colloid, and then enhance the ability of droplets and aluminum hydroxide colloid to capture and adsorb coal dust particles, and enhance the coagulation phenomenon by in-situ improving the wettability of coal dust, further improving the effect of gravity sedimentation, thereby achieving efficient and rapid dust removal.

The invention discloses a preparation method of a pair of hidden glasses and the pair of hidden glasses. The preparation method of the recessive glasses comprises the following steps: directly mixing and stirring an organic silicon monomer, an amide monomer, a cross-linking agent, a photoinitiator and a thermal initiator, dropwise adding the mixed raw materials into a lens mold, carrying out a thermocuring reaction, and then carrying out a photocuring reaction to prepare the recessive glasses. According to the preparation method, only one-step mixing is needed, the operation is simple, the advantages of photo-thermal curing are integrated, and the production efficiency is improved; the lens prepared by the method has high oxygen permeability and surface wettability.