82 results about "Aluminum paste" patented technology

The invention relates to the technical field of paint, in particular to buried pipeline outer coating paint and a preparation method thereof. The coating comprises a component A and a component B, and the mass ratio of the component A to the component B is (2.12-2.39): 1; the component A comprises the following components in parts by weight: 40-50 parts of epoxy resin, 0-5 parts of a reactive diluent, 2-3 parts of an epoxy resin toughening agent, 2-3 parts of aluminum paste, 0-20 parts of mica powder, 5-20 parts of talcum powder, 5-10 parts of pigment, 5-20 parts of glass flakes, 1-2 parts of organic bentonite, 1-2 parts of a silane coupling agent, 0.1-0.5 part of a dispersing agent, 0.1-0.5 part of a defoaming agent and 0.1-0.5 part of a flatting agent; the component B is a cardanol modified phenolic aldehyde amine curing agent; the hyperbranched modified epoxy resin cooperates with the cardanol modified phenolic aldehyde amine curing agent and the epoxy resin flexibilizer to improve the comprehensive performance of the coating; the cathodic disbonding resistance of the coating is improved through the aluminum paste; therefore, the paint which has good comprehensive performance and can meet various corrosive environments is obtained.

The invention discloses an anti-aging light-conversion silver black mulching film and a preparation method thereof, and belongs to the technical field of agricultural polymer films. The preparation method comprises the following steps: S1, mixing low-density polyethylene powder, aluminum paste, a complex light conversion agent, dioctyl phthalate and EVA (Ethylene Vinyl Acetate) to prepare silver light conversion master batches; s2, vinyl-terminated fluorosilicone oil, tert-butyl peroxybenzoate and linear low-density polyethylene powder are stirred for a reaction, and modified low-density polyethylene is obtained; the modified low-density polyethylene, maleic anhydride grafted polyethylene, a multi-effect light stabilizer and polyethylene wax are subjected to banburying granulation, and modified light-stable master batches are obtained; s3, carrying out banburying granulation on the low-density polyethylene powder, the polyethylene powder, carbon black, zinc stearate, ethylene bis-stearamide and the EVA powder to obtain black master batches; s4, blending the silver layer and the black layer, and performing double-layer co-extrusion to obtain the light-conversion silver-black mulching film. The light-conversion silver black mulching film provided by the invention has good mechanical properties and aging resistance.

The invention discloses a colored aluminum pigment and a preparation method and application thereof.The colored aluminum pigment comprises aluminum paste, a first polymer resin layer, an organic dye layer and a second polymer resin layer, the surface of the aluminum paste is coated with the first polymer resin layer, and the surface of the first polymer resin layer is subjected to acid group modification; the colored aluminum pigment is prepared by the following preparation method: preparing aluminum powder coated with a first polymer resin layer; performing surface modification on the aluminum powder coated with the first polymer resin layer to obtain surface modified aluminum powder; performing air impact coating on organic dye and the surface modified aluminum powder to obtain a colored aluminum pigment substrate; and coating a second polymer resin layer on the surface of the colored aluminum pigment substrate. The aluminum pigment is subjected to multi-layer coating, organic dye and the surface modified aluminum powder are subjected to air impact coating, and the aluminum pigment has excellent aging resistance, is bright in color and is not prone to falling off.

The embodiment of the present application provides a kind of N type TOPCon cell front silver aluminum paste and its preparation method and cell, wherein, the N type TOPCon cell front silver aluminum paste provided in the embodiment of the present application includes aluminum powder, silver powder, nano alloy powder, organic binder, glass powder and organic additive, wherein the nano alloy powder is one or more of nano silver aluminum alloy powder, nano aluminum boron alloy powder and nano aluminum silicon alloy powder.In nano silver aluminum alloy powder, nano aluminum boron alloy powder and nano aluminum silicon alloy powder, all have the characteristics of nano size particle size, high tap density, low oxygen content and high activity, so that the front silver aluminum paste added with the nano alloy powder can quickly form a good alloy with silicon at a lower sintering temperature, reduce the contact resistivity of front silver aluminum fine grid and cell, not only avoid the appearance of top needle print during EL test, but also improve the filling of cell and the efficiency of cell.

The present invention discloses a glass frit for a conductive paste for the front surface of a TOPCon solar cell, a preparation method thereof, a conductive paste, a preparation method thereof, and a solar cell. The glass frit comprises a main glass frit A and a secondary glass frit B. The main glass frit A comprises the following components by weight: 30-80 wt% B2O3, 10-50 wt% SiO2, 10-50 wt% SeO2, and 0-20 wt% oxide additives; the secondary glass frit B is Pb-Si-Zn-B glass; and the weight ratio of the main glass frit A to the secondary glass frit B is 4:1-1:4. The glass frit provided by the present invention utilizes a high-borosilicate glass system, which is less corrosive and less susceptible to silicon nitride surface reactions. This system can control corrosion depth and reduce recombination, thereby increasing the open-circuit voltage. This solves the problem of open-circuit voltage drop caused by the use of conductive silver-aluminum paste in the P-type emitter of current TOPCon solar cells.

The invention discloses aluminum paste, a water-based aluminum powder coating, a preparation method of the aluminum paste and electronic equipment, the aluminum paste comprises coated aluminum powder and an organic solvent, based on the total weight of the aluminum paste, the content of the coated aluminum powder is 40-70%, and the content of the organic solvent is 30-60%. The coated aluminum powder comprises aluminum powder, a first organic polymer layer coated with the aluminum powder, a pigment layer coated with the first organic polymer layer, a second organic polymer layer coated with the pigment layer and a silicon dioxide layer coated with the second organic polymer layer.

The embodiment of the present application provides an IBC battery aluminum paste and an IBC battery, wherein the IBC battery aluminum paste provided by the embodiment of the present application comprises an organic additive, boron powder, aluminum powder, gallium powder, glass powder and an organic binder. By adding gallium powder in the aluminum paste, because the gallium element has etching effect and high density, it is faster than aluminum to drop to the silicon surface in the sintering process, so that the Ga-Si contact probability is increased, the contact resistance of the paste and the battery is reduced, and a high open circuit voltage can be maintained. At the same time, because part of the aluminum powder is replaced by gallium, the content of aluminum is reduced, which is beneficial to reducing the side effect of Al, so that the Al-Si reaction is weakened, the formed aluminum silicon corrosion pit is shallow, the recombination is reduced, so as to improve the open circuit voltage and the photoelectric conversion efficiency of the battery. Therefore, the problem that the existing IBC battery aluminum paste is easy to form metal recombination in the cooling process after being sintered into a positive electrode grid line, resulting in the decrease of the open circuit voltage and the photoelectric conversion efficiency of the battery piece is solved.

The invention provides a composite film as well as a preparation method and application thereof. The composite film comprises a white ethylene vinyl acetate layer, a polyethylene layer and a white ethylene vinyl acetate layer which are sequentially stacked from top to bottom, wherein the white ethylene vinyl acetate layer is prepared from the following raw materials: ethylene vinyl acetate, a filler, a first cross-linking agent, a first assistant cross-linking agent and a silane coupling agent; the filler comprises titanium dioxide and coupling agent modified sericite powder; wherein the mass ratio of the titanium dioxide to the coupling agent modified sericite powder is 1: (0.5-1); the polyethylene layer is prepared from the following raw materials: a polyethylene grafted fluoride monomer, white oil, polyethylene grafted glycidyl methacrylate, a second cross-linking agent and a second assistant cross-linking agent. The composite film has the effects of reducing the water vapor transmission rate and reducing the corrosion of water vapor and acid to silver-aluminum paste, so that the TOPCON single-glass assembly comprising the composite film has good PID resistance and damp-heat aging resistance.

The invention belongs to the technical field of building materials for recycling wastes, and particularly relates to a process for mineralizing a concrete block by using industrial solid waste carbon dioxide. The industrial solid waste carbon dioxide mineralized concrete block process comprises the following steps: S1, adding modified steel slag powder, cement, fly ash and desulfurized gypsum into a stirrer for stirring and mixing to obtain a mixture; s2, adding a water reducing agent and aluminum powder paste into water, uniformly mixing, then adding quartz sand and the mixture, and uniformly stirring to obtain slurry; s3, the slurry is subjected to pouring forming and then cut into blocks through steel wires, then curing treatment is conducted, and the industrial solid waste carbon dioxide mineralized concrete is obtained. The concrete disclosed by the invention belongs to a light building material, not only realizes recycling of solid wastes and gas wastes, but also ensures good comprehensive performance.

The present application relates to the technical field of photovoltaic detection, more particularly, the present application relates to a kind of silver aluminum paste lap joint area influence on the test method and device of PERC cell open voltage.Silver aluminum paste lap joint area influence on the test method of PERC cell open voltage, comprising: silver paste is printed in the PERC test silicon piece without laser grooving, after drying, silver paste is printed using the same pattern screen printing, then print aluminum paste, after drying again, the printed silicon piece is sintered, then the electrode after sintering is tested using resistance tester, and the resistance tester reading is recorded.The present application test method is simple, pattern is simple, the influence of silver paste aluminum paste lap joint area on cell open voltage can be accurately measured, the accuracy of evaluating back silver silver paste performance data can be guaranteed, and the test efficiency can be improved, the influence of printing factors and test factors is small, data accuracy is high, and the data obtained by testing is convenient to handle, intuitive.

The invention relates to the field of coatings, and particularly discloses a metal texture coating and a preparation method thereof.The metal texture coating is prepared from, by weight, 60-85 parts of polymer emulsion, 20-35 parts of modified aluminum paste, 0.5-1 part of dispersing agent, 0.5-1 part of antioxidant and 10-25 parts of water; the modified aluminum paste is prepared by the following steps: step 1, fully dispersing a coupling agent, a molecular sieve and aluminum paste to obtain a feed liquid; and 2, acidizing polyvinyl alcohol powder, carrying out full contact reaction on the acidized polyvinyl alcohol powder and the vaporous feed liquid, finally adding a surfactant, and uniformly stirring. The preparation method of the metal texture coating comprises the following steps: uniformly mixing and stirring the polymer emulsion, the modified aluminum paste, the dispersing agent, the antioxidant and the water. The coating prepared by the invention is excellent in metal texture, good in glossiness, and excellent in water resistance and adhesive force.

A conductive aluminum paste composition is disclosed, including an aluminum-silicon alloy powder, an organic vehicle, and a glass powder, in which (1) the aluminum-silicon alloy powder has a silicon concentration of 30 mass % or more and 40 mass % or less, and (2) the glass powder contains a first glass powder and a second glass powder. The first glass powder contains 45% or more and 71% or less of PbO, 5% or more and 35% or less of B2O3, and 0.1% or more and 25.0% or less of SiO2 in terms of oxide mol %, and the second glass powder contains 35.0% or more and 55.0% or less of B2O3, 5.0% or more and 10.0% or less of SiO2, 1.0% or more and 20.0% or less of BaO, 5.0% or more and 25.0% or less of CaO, and 3.0% or more and 30.0% or less of K2O in terms of oxide mol %.

The invention belongs to the field of water-based passivated aluminum paste preparation processes, and relates to a preparation process of water-based passivated aluminum paste for injection molding, which comprises the following steps: obtaining spherical aluminum powder; carrying out ball milling treatment; performing water bath treatment. The process disclosed by the invention can meet the requirements of the market on high-performance, environment-friendly and low-cost injection molding paint.

The utility model discloses an environment-friendly scattering structure for aluminum paste production, which relates to the technical field of aluminum paste production and comprises a scattering box and a conveying box, the scattering box is communicated with the conveying box, the conveying box is fixedly mounted at the bottom end of the scattering box, a first rotating shaft is rotatably mounted in the scattering box, and a second rotating shaft is rotatably mounted in the scattering box. And scattering augers are fixedly installed on the first rotating shaft and the second rotating shaft, the pair of scattering augers are arranged in a staggered mode, a conveying shaft is rotationally installed in the conveying box, and a conveying auger is fixedly installed on the conveying shaft. By arranging the filtering assembly, scattered materials are conveyed to the filtering net bag through a conveying auger and a conveying pipe, a second driving motor drives a sector gear to rotate, and along with rotation of the sector gear, a sliding column moves up and down in a reciprocating mode, the bottom end of the filtering net bag is shaken up and down, and the materials are prevented from being accumulated on the filtering net bag; meanwhile, the filtering treatment on the materials is realized.

The invention relates to the technical field of aluminum paste, and discloses floating type water-based aluminum paste and a preparation method and application thereof.The floating type water-based aluminum paste is prepared from, by weight, 100 parts of aluminum powder, 90-120 parts of solvent and 15-50 parts of modifier; the modifier contains a large number of groups such as sodium sulfonate groups and imino groups, has large interfacial interaction force with the surface of aluminum powder, also contains comb-shaped polyether molecular chains, achieves a better agglomeration inhibition effect through steric hindrance, has an excellent dispersion effect, can enable the aluminum paste to be better dispersed in water-based emulsion, dispersoid and water-based paint, and has a good application prospect. The viscosity is smaller, and the storage stability is excellent. The water-based system of the aluminum paste is mild, aluminum powder can be prevented from reacting with a strong-acid and strong-alkali system, and the phenomenon that aluminum powder paint is inflated and swelled is reduced.

The application discloses a high-gloss electroplated silver coating composition, characterized in that the composition comprises, in percentage by weight, 1.8-2.2% of electroplated silver aluminum paste, 4.0-6.0% of electroplated silver resin, 0.04-0.06% of hydroxyl hyperbranched resin, 0.3-0.5% of blocked isocyanate resin, 0.03-0.05% of anti-silver dropping additive, 0.08-0.13% of additive, and 91.0-93.0% of solvent. The electroplated silver coating composition is used in combination with black primer and varnish, the 20° gloss of the composite coating is greater than 230, the gloss is much higher than the range value of 170-180 of the conventional electroplated silver coating composition, and the water resistance and recoating performance are qualified, and the electroplated silver coating composition can be used in combination with liquid varnish or powder varnish. The application further discloses an electroplated silver coating comprising the electroplated silver coating composition and a preparation method and application thereof.

The application discloses a preparation method of a back junction solar cell and the back junction solar cell. The preparation method comprises the following steps: forming a plurality of holes in an array arrangement on a front surface passivation anti-reflection layer of a P-type silicon substrate; arranging aluminum paste in the holes; performing first sintering on the P-type silicon substrate with the aluminum paste in the holes at 700 DEG C-950 DEG C, so as to form a P+ heavy-doped local front surface field, an aluminum electrode and an oxide layer covering the aluminum electrode; stripping the oxide layer covering the aluminum electrode; printing a plurality of silver paste lines on the front surface passivation anti-reflection layer, the silver paste lines being in contact with the front surfaces of the aluminum electrodes with the oxide layer stripped, and the silver paste lines being connected with the aluminum electrodes with the oxide layer stripped; and performing second sintering on the P-type silicon substrate with the silver paste lines, so that the sintering temperature of the second sintering is lower than the melting point of aluminum, and a silver electrode and the aluminum electrodes connected with the silver electrode form a front surface fine grid line of the back junction solar cell. The light-electricity conversion efficiency of the back junction solar cell is effectively improved.

The present disclosure generally relates to a burn-through aluminum paste composition and fired compositions thereof for selectively burn-through a passivation layer. In particular, the burn-through aluminum paste compositions of the present disclosure include an aluminum component and a glass component, where the glass component includes at least two glass frits. The present disclosure also relates to a method for preparing a burn-through aluminum paste composition and its use in the manufacture of a double sided PERC solar cell.

The present application relates to the technical field of aerated concrete preparation, and particularly relates to a method for preparing electrically conductive aerated concrete by using porous carbonized recycled aggregate and the aerated concrete. The process method first places pre-wetted recycled aggregate in a pressurized carbonization kettle, and industrial waste gas with CO2 concentration greater than or equal to 20% is introduced to react for 2-3 hours at 0.5-0.7 MPa and 60-70 DEG C to produce porous carbonized recycled aggregate. Then the porous carbonized recycled aggregate is dry-mixed with gel material, gypsum, conductive carbon black and reinforcing fibers, and then mixing water containing water reducing agent (water aggregate ratio 55-60%) is added to stir into base mortar. Then aluminum paste suspension is added to the mortar, and after stirring to start aeration, the mortar is poured into a mold. After 2-3 hours of static aeration, the mold is finally autoclaved and dried for 6-8 hours to obtain the electrically conductive aerated concrete. Through aggregate pretreatment strengthening, orderly dispersion of the conductive phase and hierarchical curing control, the present application can effectively solve the contradiction between light weight, high strength, electrical conductivity and durability, and provide a multifunctional green building material solution for airport construction.

The invention discloses a phosphate fireproof coating with high volume stability and application thereof. The coating is prepared from the following raw materials in parts by weight: 1-5 parts of aluminum dihydrogen phosphate, 1-4 parts of magnesium oxide, 0.1-0.3 part of wollastonite fiber, 0.1-1 part of aluminum powder paste, 1-3 parts of vermiculite, 0.1-1 part of dolomite, 0.1-0.5 part of organic modified montmorillonite, 0.1-0.5 part of zinc borate and 0.1-0.3 part of expanded graphite. The preparation method comprises the following steps: firstly, premixing the magnesium oxide, the vermiculite, the dolomite, the organic modified montmorillonite, the zinc borate and the expanded graphite to obtain a mixed material; dissolving aluminum dihydrogen phosphate in a proper amount of water, adding wollastonite fibers and the aluminum powder paste, fully stirring to obtain a mixed solution, and carrying out ultrasonic treatment on the mixed solution until the mixed solution is not agglomerated; and finally, adding the mixed material into the mixed solution to obtain the slurry. The coating disclosed by the invention has excellent fire resistance and heat insulation property, high volume stability and excellent crack resistance, and is suitable for the field of fire prevention of steel structures with extremely high requirements on integrity of protective layers.

The utility model relates to the technical field of mobile phone middle plates, in particular to an auxiliary bracket for forming a mobile phone middle plate, which comprises a mobile phone middle plate formed by die-casting an aluminum material and an auxiliary bracket formed by die-casting a stainless steel material, the auxiliary support is arranged on the outer side of the mobile phone middle plate, a first material hole allowing aluminum paste to flow in and forming a connecting column is formed in the side face, facing the mobile phone middle plate, of the auxiliary support, and the first material hole extends outwards. The bottom of the auxiliary support is provided with a first discharging hole allowing a die-casting die slide to be inserted therein, and the first discharging hole is communicated and connected with the first material hole. At least the inner side face of the auxiliary support and the surfaces of the first material holes are coated with release agent layers. Compared with the prior art, when the mobile phone middle plate is subjected to die-casting forming, the connecting column is connected with the auxiliary support, when the auxiliary support is removed subsequently, the auxiliary support can be separated from the mobile phone middle plate only by disconnecting the connecting column, and large-area cutting operation is not needed, so that the cutting time is shortened, and the operation efficiency of the mobile phone middle plate is improved.

This disclosure discloses a multilayer aluminum paste for use on the grid of a BC battery and its preparation method, belonging to the field of battery paste technology. The multilayer aluminum paste comprises: 60-80 parts by weight of aluminum powder; 0.8-5 parts by weight of glass powder; 2-5 parts by weight of organic resin; 15-20 parts by weight of solvent; and 0-2 parts by weight of additives; wherein the glass powder comprises 50-70% low-melting-point glass powder and 30-50% of at least one high-melting-point glass powder. This disclosure reduces the silver-aluminum bonding resistance and controls surface recombination of the battery by designing glasses with different melting points and sintering them at approximately 600°C, ensuring reliability while guaranteeing photoelectric conversion efficiency.

The invention discloses an environment-friendly aerated block production system, which belongs to the technical field of building wall material production, and comprises a raw material pretreatment unit, an ingredient stirring unit, a pouring and aerating unit, a static cutting unit and an autoclaved curing unit. According to the environment-friendly aerated block production system, lime is graded and utilized through the raw material pretreatment unit, raw material waste caused by uneven lime reaction speed is avoided, unnecessary consumption of slurry and aluminum powder paste is reduced through accurate metering and proportion control of the batching and stirring unit, meanwhile, the produced high-performance aerated block product is high in market competitiveness, and the production cost is reduced. The selling price is relatively high, the production cost is comprehensively reduced, the economic benefits of enterprises are improved, the utilization rate of raw materials in the production process is high, and waste is reduced; the waste heat in the autoclaved curing process can be recycled, the energy consumption is reduced, the finished aerated block is light in weight, the energy consumption in the transportation and building construction process is correspondingly reduced, and remarkable environmental protection benefits and economic and social benefits are achieved.

The present invention relates to the field of photovoltaic cell technology, and in particular to a method for preparing a silver-aluminum paste for resolving front-side fogging of N-type TOPCon cells. The method comprises the following steps: S1, screening spherical silver powder and spherical aluminum powder of suitable particle size; S2, weighing the raw materials according to a ratio and mixing them uniformly; firing the mixture, quenching, ball-milling, and drying to obtain a main boron glass powder and a low-melting glass powder; S3, mixing a resin and a solvent A according to a ratio, heating, and stirring to obtain an adhesive; S4, mixing all the raw materials according to a ratio, stirring at high speed to obtain a uniformly dispersed material, grinding, and sieving to obtain the target silver-aluminum paste. The method uses boron oxide as the main raw material to prepare the main boron glass powder, using it as the boron source and low-melting glass powder as the medium to promote the generation of additional boron diffusion, improve the breadth and density of the boron diffusion area, achieve a wider range of doping adaptability, and ensure uniform front-side boron diffusion, thereby avoiding fogging defects on the front side of N-type TOPCon cells.

The invention discloses a high-strength low-thermal-conductivity self-insulation aerated concrete product and a preparation method thereof. The preparation method comprises the following steps: uniformly dispersing a pore-forming template agent into first water to obtain pore-forming template agent slurry; uniformly mixing the pore-forming template agent slurry with fly ash, cement, lime, desulfurized gypsum, aluminum powder paste and second water to obtain mixed slurry; the mixed slurry is subjected to forming, pre-curing and autoclaved curing, and the high-strength low-heat-conduction self-heat-preservation aerated concrete product is obtained. A unique raw material formula and process are adopted, a spontaneous pore-forming technology of a pore-forming template agent and a skeleton supporting effect are utilized to endow the product with multiple advantages of light weight, high strength, heat preservation, sound insulation, fire prevention, low cost and the like, and the requirement of an external wall heat preservation integrated material with low cost, high strength and low heat conductivity coefficient can be met by a single inorganic material; the overall performance of the fabricated building is improved, building energy consumption is reduced, and environmental protection is achieved. The method is convenient and efficient in construction.

The utility model relates to the technical field of aluminum paste, and discloses a dehydrating and powdering device for preparing aluminum paste, which comprises a dehydrating component, a blanking component arranged in the dehydrating component, and a heating device arranged on the outer surface of the dehydrating component, the dehydrating component comprises a dehydrating tank, a hot-air blower is arranged on the upper surface of the dehydrating tank, a motor A is arranged beside the hot-air blower, and a motor B is arranged beside the motor A; the discharging assembly comprises a mounting frame, a mounting groove is formed in the mounting frame, a spring is arranged in the mounting groove, one end of the spring is fixedly connected with a filtering frame, one side of the filtering frame is fixedly connected with an impact rod, and one end of the impact rod is movably connected with a cam. The cam is installed at the output end of the motor B. By arranging the discharging assembly, the motor B is started to drive the cam to rotate so that the cam can continuously impact the impact rod, the filter frame can do reciprocating motion under the action of the spring, and therefore treated aluminum powder paste can be discharged more easily.

The utility model discloses a constant feeder for preparing aluminum powder paste, and particularly relates to the field of aluminum powder paste production. The grinding machine body comprises a rotary drum, an outlet, a baffle, a sliding plate, sampling bottles and a linkage mechanism, the rotary drum is rotationally connected with the base, the outlet is formed in the arc-shaped side wall of the rotary drum, the baffle is arranged on the outer side of the outlet in a sleeving mode, the baffle is fixedly connected with the base, a sampling opening is formed in the baffle, the sliding plate is slidably connected to the base, and the sampling bottles are placed in the sliding plate; when the sampling opening is aligned with the outlet, the aluminum powder in the rotary drum falls into the sampling bottles, and the linkage mechanism is used for driving the plurality of sampling bottles to move below the outlet in sequence; according to the automatic quantitative sampling device, the power mechanism conveys sampling bottles to the position below the outlet one by one while driving the rotating drum to rotate by utilizing the matching effect of the gear I and the gear II, so that aluminum powder samples with different thicknesses enter the corresponding sampling bottles, and the purpose of automatic quantitative sampling is achieved.

The invention relates to the technical field of automotive primer, in particular to automotive water-based metal primer and a preparation method thereof. Comprising the following raw materials in parts by weight: 40 to 60 parts of modified water-based acrylic resin, 1 to 3 parts of nonionic polyurethane thickening agent, 5 to 10 parts of aluminum paste, 1 to 5 parts of nano titanium dioxide / graphene oxide composite filler, 0.1 to 0.5 part of cocamidopropyl betaine and 0.1 to 0.3 part of polydimethylsiloxane. In the design, the surface tension of the modified water-based acrylic resin is reduced by introducing an organic silicon chain segment, so that the wetting of a paint film on a base material is promoted; the silicon dioxide nanoparticles construct a three-dimensional network structure, endow the system with high thixotropy, maintain viscosity stability at a low shear rate, and effectively inhibit a vertical surface sagging phenomenon. The nonionic polyurethane thickener is grafted by gamma-aminopropyltrimethoxysilane to introduce hydrophobic groups, a dynamic hydrogen bond network is formed, and the system is endowed with the shear thinning characteristic, so that the stability and adhesive force of the coating are ensured.

The utility model discloses an aluminum paste screening machine convenient to clean, and relates to the technical field of screening machines, the aluminum paste screening machine convenient to clean comprises a base, the four corners of the bottom of the base are fixedly connected with supporting legs, the four corners of the top of the base are fixedly connected with supporting columns, and the tops of the four supporting columns are fixedly connected with a feeding hopper; a multi-dimensional vibration assembly is arranged at the top of the base, and a filter plate cleaning assembly is arranged in the multi-dimensional vibration assembly. By means of the filter plate cleaning assembly, residual materials on the filter plate can be cleaned in time, the filter plate can keep good screening performance all the time, the situation that the screening efficiency is gradually reduced due to blockage of the filter plate is avoided, the materials can make more sufficient contact with the filter plate under the action of multi-dimensional vibration through the arranged multi-dimensional vibration assembly, and the screening efficiency is improved. The aluminum paste with different particle sizes is more uniformly distributed on the filter plate, so that the screening process is accelerated, meanwhile, the opportunity that the aluminum paste passes through or is intercepted on the filter plate can be increased through multi-dimensional vibration, and the screening effect is improved.

The invention discloses a lightweight autoclaved aerated concrete block, and relates to the technical field of concrete blocks, the lightweight autoclaved aerated concrete block comprises the following raw materials: cement, lime, a base material, modified palygorskite, calcium sulfate dihydrate, aluminum powder paste, a foam stabilizer and deionized water; the modified palygorskite is added, and a fibrous structure of the modified palygorskite can form a network skeleton in slurry, fill internal pores and block capillary channels, so that the overall structural compactness and the surface strength of the building block are improved, and the drying shrinkage rate and the water absorption rate can be reduced; by adding the foam stabilizer, sodium alkyl benzene sulfonate in the foam stabilizer can reduce the surface tension of the slurry and promote the generation of a large amount of bubbles; the nano silicon dioxide can form a rigid supporting framework in a bubble liquid film, so that bubbles are prevented from being combined or broken; the polyvinyl alcohol forms an elastic protective film on the surface of the bubble, so that the service life of the foam is prolonged, the closed porosity of the building block is greatly improved, the lightweight characteristic of the building block is guaranteed, the drying shrinkage rate is reduced due to the pore uniformity, and the impermeability and the overall strength are improved.