11507 results about "Defoaming Agents" patented technology

The invention relates to an auxiliary material for casting a mould, in particular to a casting mould water-based coating formulation for a sand mould or an expendable pattern casting (EPC), and a process for preparing the same. The casting mould water-based coating formulation consists of refractory powder, a suspending agent, a bonding agent, a surfactant, a defoaming agent, a corrosion remover and water. The process comprises the following steps: adding the suspending agent to the water directly, and mixing and dispersing the mixture in a high speed dispersion machine; adding auxiliary agents including the defoaming agent, the surfactant, the corrosion remover, and the like to the water, and mixing the auxiliary agents; adding the refractory powder to the mixture to be mixed; and adding the bonding agent to the mixture to be mixed, and then adding water to adjust the coating until the coating has the thickness in a using state to obtain the finished product. The coating prepared by the process has the effects that the coating ensures that a high-density low-viscosity coating has excellent suspension property and storage stability, a coating layer is not easy to crack after drying, the coating is advantageous to improve the capacity of the coating to resist high temperature metal corrosion, and the like.

The invention relates to a preparation method of high-performance water-based anticorrosion paint. The high-performance water-based anticorrosion paint comprises 30-60 parts of inorganic material resin, 0.5-30 parts of polyaniline-based nano composite material, 0-30 parts of curing agent, 0.1-1 part of defoaming agent, 0.1-1 part of dispersant and 0.1-1 part of leveling agent. Since the high-performance water-based anticorrosion paint does not contain organic resin or organic solvent, the paint has the advantages of heat resistance, wear resistance, weather resistance, oil resistance, fire resistance and environmental protection; the paint also has the advantages of simple preparation technique, strong binding force with metal, and low cost, can be cured at normal temperature, and can be widely used for corrosion protection in the fields of aviation, navigation, chemical engineering, electronics and the like.

The invention relates to waterborne conductive ink which comprises the following components in percentage by weight: 1-40 percent of polymer emulsion or dispersion liquid, 0.1-0.7 percent of dispersant, 0.1-0.3 percent of wetting agent, 0.2-1.8 percent of defoaming agent, 30-70 percent of conductive material, 0.5-3 percent of film-forming addition agent and 5-60 percent of water. The waterborne conductive ink disclosed by the invention has the advantages of no toxicity or odor, safety, environment friendliness, convenience in use, resource economization, favorable film forming performance and printing performance of ink, strong adhesive force and good weather resistance; the defects of toxicity, harm, inflammability and explosiveness of solvent ink are overcome; and water replaces organic solvent, so that a volatile organic compound (VOC) is reduced, and the production cost is also reduced.

The invention provides an oil suspension preparation using resin-based vegetable oil as a carrier and a preparation method thereof, and relates to a pesticide preparation. The oil suspension preparation using the resin-based vegetable oil as the carrier comprises the following raw material components in percentage by mass: 1 to 50 percent of pesticide active ingredient, 1 to 10 percent of emulsifying agent, 2 to 8 percent of wetting dispersant, 0 to 5 percent of suspension stabilizer, 0 to 0.2 percent of organic silicon defoaming agent and the balance of resin-based vegetable oil. After the pesticide active ingredient, the emulsifying agent, the wetting dispersant, the suspension stabilizer, the organic silicon defoaming agent and the resin-based vegetable oil are mixed uniformly, the mixture is put into a high-speed shearing ball milling device for ball milling so as to obtain the oil suspension preparation using the resin-based vegetable oil as the carrier.

The invention relates to an oxidized graphene and graphene reinforced cement based composite material and a preparation method thereof. The oxidized graphene and graphene reinforced cement based composite material comprises the oxidized graphene, the graphene, a dispersing agent, a thickening stabilizer, a water reducer, a defoaming agent and a cement matrix, the mass ratio of the total mass of the oxidized graphene and the graphene to the cement matrix is (0.0005-0.5):1, and the mass ratio of the total mass of oxidized graphene and the graphene to the dispersing agent to the water reducer to the thickening stabilizer to the defoaming agent is 1:(0.05-10):(0.1-20):(0.1-20):(0.05-5). In the composite material, the oxidized graphene and the graphene are dispersed in the cement matrix uniformly; compared with the traditional cement material, the tensile strength, rupture strength and conductivity of the composite material are all improved remarkably; and the composite material has more excellent mechanical property and electrical property, and is applicable to the field of multifunctional construction materials.

The invention relates to a high temperature resistant anticorrosion coating based on graphene and a preparation method thereof. The high temperature anticorrosion coating comprises the following components by the mass percentage: 5-60% of epoxy resin, 3-30% of polyphenylene sulfide resin, 3-30% of amino resin, 1-10% of a pigment, 1-20% of graphene, 3-50% of n-butyl alcohol, 0.1-0.3% of a defoaming agent, 0.1-10% of polyhydroxy acid sodium salt, 0.1-5% of benzenedicarboxylic acid dibutyl ester, 0.5-1.0% of bentonite, and 0.2-0.5% of a leveling agent. Compared with the prior art, the prepared coating has the advantages of quite excellent waterproof and anticorrosion performance, high temperature resistance, weather resistance, alkali resistance, impact resistance, artificial aging resistance and the like, and the preparation method has the advantages of good controllability, simple operation, low production cost, and easy industrialized production.

The invention relates to the field of electromagnetic wave shielding, in particular to a composite coating electromagnetic shielding paint and a composite coating electromagnetic shielding material prepared therefrom. The composite coating electromagnetic shielding paint comprises a conducting layer paint with a reflection function and a wave-absorbing layer paint with an absorption function, wherein the reflecting layer paint comprises the components of polymer emulsion, a conducting filler, a coupling agent, a defoaming agent, a wetting agent, a film forming assistant, a thickening agent and water; and the wave-absorbing layer paint comprises the components of polymer emulsion, a wave-absorbing filler, a coupling agent, a defoaming agent, a wetting agent, a film forming assistant, a thickening agent and water. The invention also discloses a composite coating electromagnetic shielding material prepared by coating the paint. The material is prepared by the steps of firstly coating the conducting layer paint on the surface of a base material, drying, then coating the wave-absorbing layer paint and the like. In the invention, the electromagnetic shielding material prepared by using the mode of compounding the wave-absorbing layer with the reflecting layer effectively reduces secondary pollution caused by the reflection of electromagnetic radiation and has wider shielding wave band in comparison to a pure wave absorbing coating; and the use of water emulsion reduces the production of harmful volatile matters and guarantees body safety.

The present invention is one kind of active defoaming composition suitable for eliminating harmful foams under high temperature and strong alkaline condition in high efficiency, and may be used in washing paper pulp, treating metal surface and other fields. The active defoaming composition is prepared with organic siloxane, silicone resin, inorganic oxide particle, hydrophobic treating agent, catalyst and other material. The preparation process includes the following steps: 1. mixing organic siloxane, silicone resin and catalyst, and heating the mixture to 80-200 deg.c for controllable polymerization; 2. adding inorganic oxide particle and hydrophobic treating agent; and 3. further heating to reaction at 80-200 deg.c temperature and 0.01-0.08 MPa vacuum for 2-10 hr, and cooling to room temperature to obtain white polymer as the active defoaming composition.

The invention relates to a high-efficiency oil-based flushing spacer liquid. The flushing spacer liquid is prepared from the following components in parts by weight: 100 parts of clear water, 1.0-1.5 parts of a surfactant, 4.0-5.0 parts of a chelating agent, 2.0-4.0 parts of a suspension stabilizer, 0.6-0.8 part of a tackifier, 0.5-0.75 part of a viscosity enhancer, 25-15 parts of a weighting agent, 1.0-5.0 parts of a pH regulator, and 0.2-0.4 part of a defoaming agent. The invention provides a special high-efficiency flushing spacer liquid for oil-based drilling fluid, which has dual functions of flushing and spacing, is high in flushing efficiency, wide in density adjusting range and good in suspension stability, and can effectively improve the conditions of interfacial cementation and improve the quality of well cementation.

The invention relates to an industrial coating, in particular to a water-based industrial insulation coating with light reflection, heat insulation and corrosion protection effects and a preparation method thereof. The coating is prepared from the following components in percentage by weight: 25 percent to 50 percent of polymer emulsion, 5 percent to 30 percent of light reflective filler, 1 percent to 5 percent of nanofiller, 5 percent to 10 percent of heat-insulating filler, 5 percent to 10 percent of anti-corrosion filler, 5 percent to 8 percent of normal filler, 0 percent to 10 percent of curing agent, 1 percent to 5 percent of dispersing agent, 0.1 percent to 4 percent of coalescing agent, 0.1 percent to 2 percent of thickening agent, 0 percent to 1 percent of defoaming agent, 0.01 percent to 0.5 percent of PH (Potential Of Hydrogen) regulator, 0.1 percent to 2 percent of wetting agent, 0.5 percent to 1 percent of antifreezing agent, and the balance of deionized water. The coating provided by the invention has the effects on light reflection, heat insulation and corrosion protection at the same time, can be applied in the fields of storage tanks, pipelines, outdoor equipment, containers and the like, has the characteristics of safety, nontoxicity, environmental protection and pollution free, and has favorable weather fastness, stain resistance, salt fog resistance and scrubbing resistance.

The invention relates to a composite emulsified asphalt waterproof coating and a preparation method thereof. The composite emulsified asphalt waterproof coating is prepared from the following raw materials in parts by weight: 150-220 parts of emulsified asphalt, 50-105 parts of a polymeric emulsion, 70-130 parts of inorganic powder, 0.5-2 parts of a stabilizer, 6-10 parts of a dispersant, 2-5 parts of a wetting agent, 1-3 parts of a thickener I, 1-3 parts of a thickener II, 2-7 parts of a defoaming agent and 15-40 parts of water. The invention further relates to a preparation method of the composite emulsified asphalt waterproof coating. The viscosity, strength, application property, solid content and storage stability of the emulsified asphalt waterproof coating are remarkably improved, and the cost is lowered to a great extent.

The invention relates to a water-based primer-topcoat braking paint and a preparation method thereof. The braking paint comprises the following materials by weight percentage: 30-40 of water-based acrylic resin, 2-10 of amino resin, 1-3 of neutralizing agent, 2-5 of compound rustproofing pigment, 1-3 of tinting pigment, 10-20 of filling agent, 0.1-0.5 of defoaming agent, 0.1-0.5 of flatting agent and 25-40 of deionized water, wherein the water-based acrylic resin is a free radical polymerization resultant which comprises the following materials by weight percentage: 10-30 of monomer containing hydroxy acrylic acid, 5-20 of monomer containing carboxyl acrylic acid, 2-8 of internal crosslinking monomer, 20-40 of other acrylic acid monomer, 15-30 of phenyl ethylene monomer, 1-5 of evocating agent and 40-50 of alcohol ether latent solvent. When the paint is prepared, the dispersion and the abrading condition of the pigments and the filling agents are reasonably controlled to ensure that each component of the paint fully plays the respective function. The paint ensures the corrosion prevention effect and the decoration of a coating and realizes the combination of a primer and a topcoat.

The invention discloses a method for removing hydrogen sulfide in a gas phase through oxidization under a high gravity field, which comprises the steps of: enabling a desulfurizing agent to be in a countercurrent or cross current contact with a hydrogen sulfide containing gas in a desulfurizing high gravity machine; and then adding the desulfurizing agent rich in sulphur in a sulphur sedimentation agent and then enabling the desulfurizing agent added with the sulphur sedimentation agent to be in a countercurrent or cross current contact with air in a regeneration high gravity machine, whereinthe desulfurizing agent is a mixed solution consisting of complex iron, aqueous alkali, a sulphur modifying agent and a defoaming agent, and in the mixed solution, the concentration of iron ions is 0.1-10g/L, pH is 8.0-9.2, the concentration of the sulphur modifying agent is 10-200ppm, and the concentration of the defoaming agent is 5-50ppm. The high gravity machine is used for replacing the traditional low-transfer-efficiency reactor, and a high gravity rotary packed bed reactor is adopted during hydrogen sulfide oxidization and catalyst regeneration, thus process transfer efficiency is greatly strengthened, and time of oxidization desulfurization and regeneration of a desulfurizing agent is shortened; in addition, the sedimentation agent is adopted in a sulphur sedimentation stage and acts together with the sulphr modifying agent, thus the sulphur sedimentation time is also greatly shortened.

A silicon steel water-soluble environment-friendly super thick insulating coating and a preparation method thereof. The insulating coating comprises the following components, by weight percentage: 10-60% of organic resin containing film-forming resin and crosslinking curing resin; 0.1-5% of inorganic pigment; 28-60% of filler; additives including 0.1-4% of wetting agent, 0.1-4% of dispersing agent, 0.1-1% of defoaming agent in and 0.1-1% of pH regulator; 1-15% of organic solvent; and the balance of pure water. The present invention provides a chrome-free C6 water-soluble environment-friendly coating with low VOC emission. The coating has high solid content and inorganic filler content (solid no less than 60%, inorganic filler content no less than 40%, GB / T 1725-2007), excellent surface insulation performance no less than1500 ohm.cm<2> / tablet (ASTM A717), good attachment (grade class A, phi 10mm rod, GB / T 2522-2007), low lamination heat compression rate, and good corrosion resistance, and is suitable for silicon steel processed with clipping and stamping by large and medium-sized motors.

The invention provides waterborne digital ink-jet printing sublimation ink and a preparation method thereof. The ink comprises the following components in percentage by mass: 1 to 10 percent of disperse dye, 2 to 15 percent of dispersing agent, 10 to 60 percent of deionized water, 10 to 50 percent of water soluble organic solvent, 0.1 to 5 percent of surface active agent, 0.05 to 0.5 percent of germicide, and 0.05 to 0.5 percent of defoaming agent. The preparation method comprises the following steps of: mixing 1 to 20 percent of dispersing agent, 10 to 40 percent of water soluble organic solvent, 0.1 to 2 percent of germicide, 0.1 to 2 percent of defoaming agent, and 30 to 50 percent of deionized water, adding 1 to 20 percent of disperse dye while stirring, and grinding the mixed solution to obtain color paste; uniformly mixing 15 to 50 percent of color paste, 10 to 30 percent of water soluble organic solvent, 0.1 to 5 percent of surface active agent and 20 to 50 percent of deionized water and filtering the mixed solution to obtain the waterborne digital ink-jet printing sublimation ink. When the waterborne digital ink-jet printing sublimation ink is used in a large-sized ink-jet printer using waterborne ink, the good printing smoothness and the water retention of a printing head are achieved, and the preparation process is simple.

The invention relates to anti-bacterial water-based paint and a preparation method thereof. The paint comprises the following components in parts by weight: 0.2-11 parts of anti-bacterial agent, 8-33 parts of nano material, 23-64 parts of water-based resin dispersoid and 0.75-18 parts of adhesive resin or plasticizer. The preparation method comprises the following steps: firstly preparing a nano silver anti-bacterial agent; mixing deionized water, the anti-bacterial agent, a wetting agent, a dispersing agent and a defoaming agent and uniformly mixing, adding the nano material, uniformly dispersing to obtain the water-based dispersoid; adding the obtained water-based dispersoid to the mixed emulsion or water-based resin dispersoid, then adding the adhesive resin or plasticizer and various conventional assistants, stirring and dispersing evenly; adding pigments or colorant; and supplementing water to obtain the anti-bacterial water-based paint. The long-acting broad-spectrum antibacterial water-based paint has high fungicidal efficiency (more than 99%) on escherichia coli, staphylococcus aureus, black varietas of bacillus subtilis and the like and can reduce the high concentrate of organic matters of formaldehyde to the range of specified concentration index.

The invention provides a mineral oil defoaming agent comprising mineral oil, a fatty acid metal soap, fatty acid amide, white carbon black, a defoaming auxiliary agent and an emulsifying agent. The invention has the technical scheme that the fatty acid metal soap, the fatty acid amide and the white carbon black are simultaneously selected as defoaming substances and a method mixing the defoaming substances into the mineral oil is changed, thus the stability and the foam removing and depressing properties of the mineral oil defoaming agent are improved. The mineral oil defoaming agent has better foam removing and depressing effects in the processes of papermaking black liquor, coating, sewage treatment, latex, cleaning, and the like.

The invention relates to a water-based two-component acrylic acid polyurethane automobile paint and a preparation method thereof. The paint is prepared from component A and component B, wherein the component A is prepared by the way that water-based hydroxyl resin, wetting agent, defoaming agent, thickening agent, coupling agent and film forming auxiliary are added into deionized water in formularatio and are dispersed for 15 minutes, the component B is poly isocyanate curing agent, the component B is weighed according to formula ratio, the component B is slowly added into the component A indispersed state, and dispersing is continuously carried out for 5 minutes, thus obtaining the paint. The water-based two-component automobile paint prepared by the invention remains the original filmhardness, medium resistance and salt fog resistance, and meanwhile VOC (volatile organic component) content is greatly reduced, so that the paint can be widely applied to water-based automobile paintindustry and has great industrial application value and market prospect.

The alkali-free liquid setting accelerator for spray concrete is compounded with aluminum sulfate 40-70 wt%, magnesium sulfate in 5-50 wt% of the aluminum sulfate, alcohol amine 2-10 wt%, stabilizer 0-10 wt%, defoaming agent in 0-10 wt% of the stabilizer, glycerin 0-1 wt%, and water for the rest. The present invention has excellent cement adaptability, and can provide excellent early strengthening performance and spray construction performance even if to difficult cement with lower C3A content, such as modified cement.

The invention discloses a heat-conductive and anti-corrosion coating based on a graphene functional material, which includes following components: 0.05-6 parts of the graphene functional material, 60-80 parts of resin, 6-16 parts of a pigment, 8-18 parts of a filling material, 10-20 parts of a diluent, 0.1-0.3 parts of a defoaming agent and 10-30 parts of a curing agent. The invention provides the coating which is excellent in heat conductivity and anti-corrosion property and is based on the graphene functional material, wherein the graphene functional material has the excellent performances of various materials, so that the coating is enhanced in heat conductivity and further is enhanced in compactness and improved in anti-corrosion property.

The invention relates to the technical field of petroleum base lubricant composition and a preparation method thereof, which is copper and aluminum wire drawing oil and a preparation method thereof. The copper and aluminum wire drawing oil comprises base oil, an emulsifying agent, an auxiliary emulsifying agent, a defoaming agent, an antirusting agent, a preservative and an antiwear agent. The preparation method can be carried out by the following steps that: the copper and aluminum wire drawing oil is mixed into 3 percent to 45 percent of water-based emulsion according to the weight percentage. The water-based emulsion is showered into a wire drawing die cavity in the copper and aluminum wire drawing process. The product of the invention has good lubricating property, excellent light stability and storage stability, low cost, good cooling effect, fast heat-transfer speed, little temperature-rise amplitude, nonflammability and easy cleaning, thus guaranteeing safety of use environment. Copper wires and aluminum wires which are drawn by adopting the product have even line shapes, bright surfaces, and rustless property, and also have good ultraviolet and storage stability and good stability.

The invention discloses an efficient silicone defoaming agent, which mainly comprises a silicone grease mixture, a synergistic agent, a polyether silicone oil emulsifier, an assistant emulsifier, a thickening agent, preservative and water, wherein in an emulsifier emulsion, the silicone grease mixture and the polyether silicone oil emulsifier account for 70-90 percent of the amount of active matters; the active matters account for 5-30 percent of the amount of the emulsion; and water serves as another medium. In the efficient silicone defoaming agent, the foam inhibiting performance is enhanced by using the silicone grease mixture, the defoaming performance and dispersity are improved by using the polyether silicone oil emulsifier, and the silicone grease viscosity and compatibility are lowered and the emulsifying effect is improved by adding the synergistic agent. The efficient silicone defoaming agent has the characteristics of application to waterborne systems, high defoaming speed, good foam inhibiting effect, low using dosage, high chemical inertness, nontoxicity, capability of acting under severe conditions and low cost.

The invention relates to a novel composite air purification coating material and a preparation method thereof and belongs to the technical field of environment-friendly functional coating and air purification. Aerogel and photocatalysts are used as adsorption/photocatalytic functional fillers in the coating, prepared adsorption/photocatalyst dispersion liquid and acrylic emulsion or fluorocarbon emulsion are mixed, and an appropriate quantity of dispersing agents, coalescing agents, defoaming agents and the like are added so as to obtain the novel composite air purification coating. Compared with air purification coatings in prior art, the novel composite air purification coating is efficient and permanent in air purification effect. The test result of adsorption/photocatalytic degradation of formaldehyde shows that the formaldehyde concentration is decreased from 0.39mg/m3 to 0.04 to 0.05mg/m3 after 5 to 6 hours of adsorption/photocatalytic degradation, and the adsorption/photocatalytic degradation rate reaches to 79.49% to 89.74%.

The present invention provides one kind of water thinned industrial paint based on water dispersed organosilicon epoxy acrylate. The water thinned industrial paint is prepared with water dispersed organosilicon epoxy acrylate, inert antirust pigment, active antirust pigment, nanometer material modified antirust pigment, stuffing, dispersant, wetting agent, thickener, drying agent, mildew inhibitor, preservative, defoaming agent, deionized water and other materials. The water thinned industrial paint with water dispersed organosilicon epoxy acrylate as base material can form coating with the features of high mechanical strength and high anticorrosive performance similar to that of epoxy resin as well as the features of high weather resistance and good decoration performance like acrylate resin. The water thinned industrial paint has convenient use and wide application range.

The invention discloses sand-in-water colorful imitation stone paint. The invention provides sand-in-water colorful imitation stone paint which has a thick coating, high bonding strength, good water resistance, ageing resistance and good storage stability and is a technical progress in the paint industry. The paint is prepared by preparing a crosslinking agent, a dispersing agent, cellulose, a defoaming agent, bactericide, a pH (potential of hydrogen) regulator, a thickening agent, an antifreezing agent, a film formation assistant, a setting agent, titanium dioxide, colored sand and emulsion into a protection glue solution, base paint and a continuous phase and mixing the protection glue solution, the base paint and the continuous phase uniformly. In the paint, the crosslinking agent is an elastomer and nano gel with high grade of transparency, high viscosity and high thixotropy; after the colored sand is added to the paint, colored particle hardness of the paint is adjustable; the paint is suitable for various colors and patterns; and the paint has the advantages of good storage stability, no color bleeding, high possibility of granulation, good water resistance, lasting weatherability, crack resistance high stone imitation degree, simple construction, low cost and workhour saving.

The invention provides a carbon nano material/metal nano material composite nano ink which comprises solvent, an additive, a carbon nano material and a metal nano material. The carbon nano material/metal nano material composite nano ink is characterized in that the solvent can comprise water, alcohol organic solvent (ethanol(alcohol), isopropanol, n-butanol and the like), ester organic solvent (ethyl acetate, butyl acetate, ethylene-propylene acetate and the like), benzene organic solvent (methylbenzene, dimethylbenzene and the like) and ketone organic solvent (cyclohexanone, acetone, methylethylketone, butanone and the like); the additive comprises surfactant, pH value stabilizer, defoaming agent, diluter, reinforcer and the like; the carbon nano material comprises a single-layer carbon nanotube, a double-layer carbon nanotube, a multi-layer carbon nanotube and graphene; the metal (copper, silver, gold, platinum, nickel and the like, also including an alloy nano material, an ITO metal composite nano material and the like) nano material further comprises a metal nanoparticle, a metal nanowire or a metal nanotube; the components of the nano ink must include one carbon nano component and one metal nano component, such as a single-layer carbon nanotube and copper nanowire composite ink, a double-layer carbon nanotube and silver nanowire composite ink, a single-layer carbon nanotube and silver nanoparticle composite ink or any other possible combination; the components can be regulated according to specific applications; and a composite nano conductive film can be formed on different bases through different electronic printing processes. The ink can be used in the printing of a flexible base material and can be conveniently prepared into a flexible conductive film.

The invention relates to a special release agent for concrete, which comprises the following materials in parts by weight: 80-90 parts of mineral substance oil, 1-5 parts of an emulgator, 1-5 parts of a defoaming agent, 0.01-0.4 part of a corrosion inhibitor, and 1-10 parts of fatty acid. The invention also relates to a preparation method for the release agent. The special release agent for concrete adopts two substances, namely, a fatty acid active substance and the emulgator, the adhesive strength of the surface of the concrete is reduced when surface saponification is formed, so that demoulding is easier and the surface is smooth and has no defects. The product prepared by the method can be stored at temperature of wide range, is convenient to store and can be stored for a long time, has small relative density, can be diluted for use by adding 2-6 times of water, and lowers the transportation cost of the release agent.

The invention discloses a novel nano modified antimicrobial water-based woodware paint which comprises acrylic resin emulsion, polyurethane resin emulsion, nano silica sol, nano aluminum oxide, nano titanium dioxide, nano silver, film-forming assistant, defoaming agent, wetting and dispersing agent, leveling agent, thickening agent, wax emulsion and pH regulator. The nano materials dispersed in the water-based paint enhance the hardness of the coated film, so that the coated film has excellent yellowing resistance, aging resistance and mold resistance.

The invention relates to a cement-based composite material and a pressure sensor made of the same. The problems that the cement-based composite material has poor electrical resistivity and stress sensing ability because carbon fibers are not uniformly dispersed in a matrix, the pressure sensor is poor in stability and low in sensitivity and the like are solved. The graphene oxide/carbon fiber cement-based composite material is composed of functional components, cement, a dispersing agent, a water reducing agent, a defoaming agent, fine aggregates and other mineral admixtures, wherein the functional components include graphene oxide and carbon fibers, graphene oxide accounts for 0.01-5% of the total mass of a cementing material, and the carbon fibers account for 0.01-5% of the total mass of the cementing material. The graphene oxide/carbon fiber cement-based composite material disclosed by the invention has the advantages of high strength, good durability, few porosity defect, good compactness and the like; the pressure sensor has the advantages of stable initial electrical resistivity, high stress sensing ability, high sensitivity, good stability and the like; and the cement-based composite material is superior to a cement-based composite material which only takes the carbon fibers, graphene oxide, carbon black or steel slag and the like as a conductive phase.

The invention discloses a photocatalyst paint, consisting of the following raw materials according to weight percentage: 0.5-1.5 percent of nanometer titanium dioxide, 0.05-0.15 percent of nanometer titanium phosphate, 0.05-0.15 percent of nanometer silicon dioxide, 0.5-1.5 percent of nanometer negative ion powder, 5-15 percent of emulsion used for construction coatings, 0.001-0.004 percent of defoaming agent, 0.001-0.004 percent of coupling agent, 0.001-0.004 percent of dispersant, 0.01-0.04 percent of thickener and the rest of water. The paint can purify air in a rapid, efficient and lasting manner, completely remove interior odor and harmful gases such as formaldehyde, TVOC, benzene, ammonia and the like, and inhibit or kill microorganism; furthermore, the preparation equipment and technology are simple, the production cost is low, the product is harmless and odorless, safe, environment-friendly and applicable to various interior environments such as newly decorated rooms, office places, hotels, stores, and the like.