176results about How to "Non-toxic and pollution-free" patented technology

The invention discloses a method for preparing grapheme dispersion liquid. The method comprises the following steps: (1) uniformly mixing grapheme and a dispersant in a solvent to obtain a uniformly mixed solution; and (2) dispersing the uniformly mixed solution by a dispersing device for 0.5-24 hours to obtain the grapheme dispersion liquid, wherein the rotation speeds of a high shearing dispersion head and a colloid grinding disc are regulated to be within 100-14000rpm, the rotation speed of an electric mixer is at 10-2000rpm, an energy-concentration ultrasonic probe is additionally arranged, the ultrasonic frequency is within 20-80kHz and the dispersion temperature is 0-20 DEG C after being regulated by a cooling system. According to the method for preparing the grapheme dispersion liquid, the dispersion time is saved and the production efficiency is improved due to the adoption of multiple dispersion methods and synergic action, the cost is low, the operation is easy, and the method is nontoxic, free of pollution and beneficial for batch production, has high dispersion stability and a bright prospect of large-scale industrial application.

The invention provides a fly ash based geopolymer. The fly ash based geopolymer comprises a dry powder phase and water, of which the mass ratio is 20:3, wherein the dry powder phase comprises the following components in parts by weight: 60-85 parts of fly ash, 0-25 parts of silica fume, 10 parts of solid sodium silicate, 5 parts of industrially pure sodium hydroxide and 0.05-0.12 part of sodium tripolyphosphate. The fly ash based geopolymer can replace cement to prepare engineering materials such as concrete, mortar and the like, and is expected to be applied in the fields such as utilization of high-strength thermal mortar, high temperature resistant reinforcement materials, corrosion-resistant concrete structures and industrial wastes, rapid repairing materials, high-strength and high-performance materials, and the like. Meanwhile, the industrial waste fly ash can be largely and efficiently utilized; the fly ash based geopolymer has great significance on saving of resources, saving of energy sources and protecting of the environment. A preparation method of the fly ash based geopolymer is also simultaneously provided.

The invention discloses a polyaniline anti-corrosion coating for underwater or wet surfaces. The anti-corrosion coating comprises a component A and a component B in parts by weight. The component A comprises 30-60 parts of epoxy, 5-20 parts of resin modifiers, 3-10 parts of polyaniline, 0.5-5 parts of corrosion inhibitors, 1-2 parts of additives, 20-30 parts of pigment filler; The component B comprises 14-30 parts of curing agent. The preparation method comprises the following steps of adding wetting agent and dispersing agent into polyaniline to allow the surface of polyaniline to be sufficiently moistened; sequentially adding epoxy, resin modifiers, pigment filler and corrosion inhibitors, stirring and then adding polyaniline which is subjected to surface treatment, stirring, evenly dispersing, adding leveling agent and defoamers; grinding to obtain the component A having a particle size of less than 35mum; the curing agent is taken as the component B. The polyaniline anti-corrosion coating prepared by the invention is non-toxic and has no pollution on the human body and is environmentally friendly and has not only good underwater adhesion, lasting corrosion resistance, and smooth surface. The coating is flexible and elastic.

The invention relates to a quick self-drying polysaccharide substance compounded natural raw lacquer and a preparation method thereof. The polysaccharide compounded raw lacquer is prepared by adding water-soluble or acid-soluble polysaccharide and derivatives of the polysaccharide into natural raw lacquer, and uniformly dispersing, wherein the polysaccharide accounts for 0.01 to 10 mass percent of the compounded raw lacquer. The polysaccharide compounded raw lacquer can be quickly self-dried at room temperature and relative humidity of 40-100 percent, has high stability, has adhesion, flexibility and impact strength superior to those of an original raw lacquer, is poisonless and harmless to a human body, does not pollute environment, is natural and environment-friendly and can be widely applied to industry, restoration of cultural relics, and daily life of residents.

The invention relates to a method for preparing high-dispersibility zinc oxide granules, which comprises the following steps: (1) dissolving soluble zinc salt into deionized water, and stirring the mixture to prepare 0.1 to 10 percent of zinc salt solution in percentage by mass; (2) dissolving alkali in the deionized water according to a molar ratio of the zinc salt to the alkali of 1:2 to prepare alkali solution; (3) dissolving hydrophilic emulsifying agent of which adding amount is 0.5 to 20.0 percent of the mass of the zinc salt into the deionized water; (4) at a temperature of between 20 and 90 DEG C, fully stirring the emulsifying agent solution, adding the zinc salt solution and the alkali solution into the emulsifying agent solution drop by drop to obtain white precipitate, and filtering and separating the white precipitate; and (5) washing the separated white precipitate, drying the washed white precipitate at a temperature of between 40 and 120 DEG C to obtain zinc oxide powder, dispersing the zinc oxide powder into water by ultrasound, and adding 0.1 to 10 percent of stabilizing agent to obtain zinc oxide sol. Compared with the prior art, the method has the advantages that the preparation cost is low, and the size and shape of the zinc oxide granules are easy to control; and the prepared zinc oxide granules have even grain diameter and high dispersibility and do not have the problem of agglomeration.

The invention provides a pressure sensor with a porous graphene foam structure. The pressure comprises electrodes and the porous graphene foam structure. Silver paste is used for connecting the porous graphene foam structure and the electrodes for improving conductivity. The electrodes are made of one selected from aluminum strip, silver wire and copper plate. The electrodes are adhered on the upper surface and the lower surface of the porous graphene foam structure through the silver paste. The invention further provides a preparation method of the pressure sensor. Compared with prior art, the pressure sensor provided by the invention has advantages of low cost, high sensitivity and large measurement range. The pressure sensor is made of a flexible material and can be used for a novel wearable device. The pressure sensor has advantages of simple preparation process, easy industrialization, high market value and high industrialization potential.

The invention discloses a functionalized environment-friendly regenerated silicone rubber and a preparation method thereof. According to the method, methyl vinyl silicone rubber vulcanized glue edgings or waste silicone rubber products are classified according to the colors; the materials are washed and dried; edgings or waste silicone rubber products with a same color are added into a rubber open mill; a roll distance is adjusted to 3-5mm, and rolling is carried out 3-6 times; the roll distance is reduced to 1-2mm; silicon micro-powder and an antistatic agent are added; a 50-70 DEG silicone rubber compound is added, and a structure controlling agent is added; a functional filling material and dimethylsilicone oil are added; sheet producing and heat treatment are carried out; the mixture is subjected to roll covering again; a vulcanizing agent bis-tert-butyl isopropylbenzene peroxide is finally added, and sheet producing is carried out. With the method provided by the invention, silicone rubber powder particle electrostatic repulsion is effectively prevented, and waste silicone rubber regeneration time is shortened by more than 50%. The process is simple, energy consumption is low, and the method is non-toxic and environment-friendly. With the method, silicone rubber products with high hardness, or electric conductivity, or flame retardant property, or thermal conductivity can be prepared through vulcanization.

The invention relates to a modified aluminium trippolyhosphate anticorrosive paint with high efficiency, in particular to an environmental modified aluminium trippolyhosphate anticorrosive paint with excellent corrosion resistance. The modified aluminium trippolyhosphate anticorrosive paint comprises the following ingredients: 55.0-65.0 weight portions of aluminium trippolyhosphate, 1.0-3.5 weight portions of molybdate substances, 35.0-40.0 weight portions of PH conditioning agent and 0.2-1.0 weight portions of surface modification auxiliary agent. According to the invention, molybdate substances are used for modifying aluminium trippolyhosphate, the prepared modified aluminium trippolyhosphate anticorrosive paint has excellent corrosion resistance, is a ideal substitute of the traditional redlead anticorrosive paint.

The present invention provides a method of preparing molten drop preventing fiber with polyester and polypropylene fiber as base material and through grafting carboxyl group compound. The method includes irradiation grafting reaction to graft compound containing carboxyl group onto acrylic acid monomer under the irradiation of high energy electron beam, gamma ray or ultraviolet ray; and the subsequent soaking treatment in magnesium hydroxide or aluminum hydroxide solution. The method results in lasting molten drop preventing performance and has no toxicity and contamination. The polyester and polypropylene fiber through the molten drop preventing treatment produces no molten drop during burning, and can avoid secondary fire and damage to skin caused by molten drop.

The invention discloses a preservative for fruits and vegetables, which comprises the following components in percentage by mass: 5-8% of an emulsifier, 3-5% of Litsea cubeba extracts, 2-4% of star anise extracts, 2-3% of chitosan, 2-3% of calcium chloride, 1.5-3% of calcium bisulfite, 1.5-3% of calcium chlorite, 1.5-3% of anhydrous ethanol, 0.5-1% of citric acid, and the balance of distilled water. A use method of the preservative for fruits and vegetables comprises the following steps: soaking vegetables or fruits into the preservative for 5-10 minutes, taking out the vegetables or fruits out of the preservative and drying the vegetables or fruits, placing the vegetables or fruits into a preservative vessel, covering preservative films on the vegetables or fruits, and storing the vegetables or fruits under the condition of room temperature. The preservative for fruits and vegetables disclosed by the invention is excellent in properties, keeps the quality of fruits and vegetables, enhances the commodity property of fruits and vegetables, and prolongs the shelf life of fruits and vegetables; the preservative is safe, environment-friendly, non-toxic, harmless and pollution-free; the preservative is high in efficiency, and has an antibacterial effect superior to that of sodium benzoate; and the preservative is simple in machining process, moderate in cost and easy to use, and therefore, the fresh-keeping agent disclosed by the invention is an economic and ideal preservative for fruits and vegetables.

The invention provides an oxygen-enriched nano bio-enzyme electrode as well as a sensor device and a preparation method and application of oxygen-enriched nano bio-enzyme electrode. According to the oxygen-enriched nano bio-enzyme electrode, an electrode substrate is modified with a hollow structure nano material with the oxygen enrichment function, catalyst particles of hydrogen peroxide and an oxidase corresponding to a substance to be detected. The oxygen-enriched nano bio-enzyme electrode and the device have the advantages that the detection linear range is wide, the sensitivity is high, the anti-interference performance is good, and in addition, batch production can be carried out; and the advantages are mainly derived from the hollow structure material with the oxygen storage function.

The invention relates to a method for growing a perovskite monocrystal with a liquid-liquid two-phase method. The method is simple in operation, low in requirement for surrounding environment, non-toxic and free of environmental pollution, and the obtained monocrystal is high in degree of crystallinity and high in stability. The method comprises the following steps: getting a solution providing a tin source, dropwise adding in an immiscible solution containing halides, reacting at the position of a formed separation interface, and growing the perovskite monocrystal. Two immiscible liquid phases are dropwise added to form layering in a liquid-liquid two-phase method reaction manner, the two phases quickly react at the layering position of the interface directly to grow an MASnI3 perovskite monocrystal, and the temperature regulation is restricted, so that the environmentally-friendly leady monocrystal with regular shape, high degree of crystallinity and high stability can be grown. The method has the characteristics of being simple in operation, quick in reaction, low in requirement for reaction, low in cost, high in success rate, non-toxic and pollution-free; and a new thought and a new method are provided for the development of the perovskite material.

The invention discloses a gas-inflating-and-locking-integrated gas blaster. The gas-inflating-and-locking-integrated gas blaster comprises an inner tube, an inner-tube filling cavity, an ignition mechanism, an inner-tube gas inflating mechanism and an outer tube. The inner-tube filling cavity is formed in the inner tube, a first sealing inner cover and a second sealing inner cover are connected to the two ends of the inner tube in a sealed mode respectively, the outer tube is arranged on the outer layer of the inner tube, a first sealing outer cover and a second sealing outer cover are connected between the inner tube and the outer tube in a sealed mode, the ignition mechanism and the inner-tube gas inflating mechanism are installed on the first sealing inner cover or the second sealing inner cover, and an outer-tube gas inflating mechanism is installed on the first sealing outer cover or the second sealing outer cover; a sealed cavity between the inner tube and the outer tube is an outer-tube filling cavity, the inner-tube filling cavity is filled with supercritical oxygen and carbonaceous organic materials, and the outer-tube filling cavity is filled with liquid easy-to-gasify materials such as liquid carbon dioxide or liquid nitrogen. The gas-inflating-and-locking-integrated gas blaster has the advantages that the manufacturing cost is low, the mixing uniformity of reaction materials is high, the heat releasing efficiency is high, the transportation safety is good, and the blasting power is large.

The invention relates to a high-smoke suppression and high-oxygen index phenolic aldehyde fire-proof heat-preserving board and a preparation method thereof and belongs to the technical field of a building fire-proof material. The high-smoke suppression and high-oxygen index phenolic aldehyde fire-proof heat-preserving board comprises the following components in parts by mass: 100 parts of phenolic resin, 10 to 20 parts of expansive fire retardant, 5 to 10 parts of liquid fire retardant, 5 to 8 parts of coal ash, 1 to 2 parts of tiny silicon powder, 1 to 2 parts of magnesium hydroxide, 5 to 7 parts of foaming agent, 5 to 7 parts of foam stabilizer and 20 to 30 parts of curing agent. The preparation method of the high-smoke suppression and high-oxygen index phenolic aldehyde fire-proof heat-preserving board comprises the following steps of 1) preparing a mixed slurry, i.e. (1) optionally selecting a formula, (2) mixing the phenolic resin and the liquid fire retardant, (3) mixing the expansive fire retardant, the hollow coal ash, the magnesium hydroxide and the tiny silicon powder, and adding the mixture into the mixed liquid, (4) adding the foaming agent and the foam stabilizer, and uniformly stirring the materials, and (5) adding the curing agent, stirring the materials, and filling the mixture into a die; and 2) molding and curing to obtain the fire-proof heat-preserving board. The fire-proof heat-preserving board has the advantages of convenience in construction, good fire resistance, low water absorption per volume, capability of meeting the requirements of high smoke suppression and high oxygen index of inner and outer wall heat-preserving boards, and the like.

The invention mainly provides a sanitizer formulation and a preparation method thereof. The sanitizer formulation comprises 6-12 parts of honeysuckle, 8-12 parts of fructus forsythiae, 6-12 parts of onion, 6-10 parts of houttuynia cordata, 8-12 parts of dandelion, 6-10 parts of radix bupleuri, 5-7 parts of hickory oil, 5-8 parts of radix isatidis, 15-22 parts of activated carbon, 6-8 parts of ginger, 5-9 parts of folium artemisiae argyi, 5-8 parts of eucalyptus leaf, 5-8 parts of radix sophorae flavescentis, 5-8 parts of glycerin, 6-10 parts of aloe, 10-15 parts of hydrogen peroxide, 3-5 partsof potassium permanganate, 8-15 parts of anhydrous alcohol, 5-15 parts of dimethyl formamide and 30-150 parts of distilled water. Honeysuckle, fructus forsythia, onion, houttuynia cordata, dandelion,radix bupleuri, radix isatidis, ginger, folium artemisiae argyi, the eucalyptus leaf, radix sophorae flavescentis and aloe which have sterilization and disinfection effect and are low in cost, easy to obtain and obvious in disinfection and sterilization effect are used as main raw materials, potassium permanganate, hydrogen peroxide and the hickory oil are used as auxiliary materials, and glycerin and dimethyl formamide are compounded, so that the prepared sanitizer formulation is higher in sterilization speed, stronger in sterilization effect, lower in sterilization concentration, nontoxic and pollution-free.

The invention discloses a preparation method of a super-high-dispersion polycarboxylate-type efficient water reducing agent. The preparation method includes the specific steps that firstly a terminal amino-based copolymerization product is prepared, then a terminal halogen-based unsaturated copolymerization product is prepared, finally the obtained terminal halogen-based unsaturated copolymerization product, an unsaturated ester monomer B, a transition metal compound and a ligand react at the temperature of 50-80 DEG C, and the super-high-dispersion polycarboxylate water reducing agent is obtained. Product performance is adjusted by controlling the molecular structure and the molecular weight on a main chain / side chain of the water reducing agent, the reaction speed is high, efficiency is high, the water reducing agent is free of toxin and pollution, and operation is simple. The prepared polycarboxylate-type water reducing agent is the super-high-dispersion polycarboxylate-type efficient water reducing agent and is stable in product performance and low in cost and particularly has an excellent slump retaining effect on stones containing mud and sand.

The invention discloses a fire-resisting polyester fiber and a method for preparing fire-resisting fibers by using the polyester fiber as a substrate and grafting compounds containing carboxy groups. The method comprises the following steps: grafting compounds containing carboxy groups and phosphorous monomers on the fiber surface of the fire-resisting polyester fiber, carrying out reaction by an irradiation grafting method, carrying out high energy electron beam or gamma ray or ultraviolet irradiation by using acrylic acid as a monomer, and then carrying out soaking treatment by using magnesium hydroxide or aluminium hydroxide solution. The invention has the advantages that the method has durable performance of molten drop resistance, non-toxicity and no pollution; the molten drop resisting fiber prepared from polyester fiber and polypropylene fiber having the function of molten drop resistance by the irradiation grafting technique can not generate molten drops during combustion, thus a second fire caused by molten drops during combustion is avoided; and the harm to the skin from the molten drops is avoided when the molten drop resisting fiber is used as clothing fabric.

The invention relates to an efficient environment-friendly concrete preservative, which comprises the following components in portion by weight: 10 to 18 portions of various benzoic acids and boric acids, 20 to 40 portions of silica fume, 20 to 35 portions of alkalis; 35 to 50 portions of ethanolamine, and 15 to 20 portions of active components. The preservative can be widely applied to various building materials, especially to concrete and cement, and is reliable in rust prevention and corrosion resistance and good in environmental indexes. The preservative has the advantages of containing no mineral oil, containing no nitrite, chromate and the like harmful to human body, adapting to compressive strength (50 MPa in general) of actual requirements, improving strength, durability and heat resistance and meeting the requirements for high-performance concrete, along with no toxicity, no stimulation, no pollution, good construction performance, high dimensional stability, less shrinkage and no cracking in the hardening process.

The invention discloses a water-base extinguishing agent, comprising hydrocarbon surfactant, stabilizing / coupling agent, chelating agent, spreading anti-burning agent, antifreeze agent, emulsifier, tackifier and water. According to the invention, inert gases are used for emission, and foam is generated by emulsification of solution and heating to cover the fire, so that the water-base extinguishing agent is most effective to put out fire of oils. The main added ingredients have no toxicity and no pollution, so that the water-base extinguishing agent is a environment-friendly extinguishing agent. The water-base extinguishing agent has the advantages of low price of the additives, easy obtainment of the additives and simple production process, and is suitable for large-scale application andextension.

The invention discloses a chitin / carbon nanotube composite adsorbent for blood perfusion and a preparation method thereof. The preparation method comprises the following steps of: by taking a natural macromolecular material chitin as a carrier, under a low-temperature stirring condition, performing freezing-unfreezing circulation so as to combine the chitin dissolved in an alkali / urea water solvent system with carbon nanotubes and form a uniform chitin / carbon nanotube composite solution, performing emulsification and thermal induction self-assembling process, thereby forming chitin / carbon nanotube composite nano fiber microspheres. The prepared microspheres have through hole canals applicable to free diffusion of bilirubin, have a good adsorption effect on combined bilirubin, and moreover are excellent in biocompatibility and blood compatibility. The composite nano fiber microspheres can be also fixed with an effective amount of high-activity ligand through covalent bonds, and the cleaning property and biocompatibility of the bilirubin of the microspheres can be further improved.

The invention discloses paper pulp of a paper logistics tray. Raw materials of the paper pulp comprise waste corrugated paper, a raw bamboo pulp board, a wood pulp board, auxiliaries and a packing material, wherein the auxiliaries comprises a AKD (Alkyl Ketene Dimer) waterproof agent, a twice-modified polyacrylamide derivative strengthening agent, a PAE (polyarylether) wet strengthening agent, formaldehyde, paranitrophenol, polyacrylamide and polyvinyl alcohol, and the packing material is calcium carbonate; the formula of the paper pulp of the paper logistics tray comprises the following components in percentage by mass: 77% to 80% of waste corrugated paper, 6% to 9% of raw bamboo pulp board, 4 % to 7% of wood pulp board, 1.2% to 2.1 % of AKD waterproof agent, 1.2% to 2.1 % of twice-modified polyacrylamide derivative strengthening agent, 0.8% to 1.5% of PAE wet strengthening agent, 0.6 to 1.2% of formaldehyde, 0.4% to 0.8 % of paranitrophenol, 1.78% to 3.67% of polyacrylamide, 0.12% to 0.28% of polyvinyl alcohol and 4 % to 7 % of calcium carbonate. The formula of the paper pulp of the paper logistics tray has the advantages of low cost, high beating efficiency, high strength of products, good moisture resistance, high permeability and little pollution to environments.

The invention provides a preparation method of high-purity vanadium pentoxide. The method comprises the following steps of preparing dissolving liquid from an ammonium metavanadate crude product; adding sodium hydroxide and sodium carbonate to the dissolving liquid, and adjusting the pH value to be 8.5-9.0; adding a purifying agent to the dissolving liquid of which the pH value is adjusted, and performing solid-liquid separation so as to obtain a filtrate; adding ammonium chloride to the filtrate to obtain ammonium metavanadate precipitation, washing the precipitation, and dehydrating the washed precipitation so as to obtain ammonium metavanadate crystals; and under 500-550 DEG C, calcining the ammonium metavanadate crystals for 2-2.5 hours so as to obtain the vanadium pentoxide. An impurity removing measure of combining a physical method with a chemical method is taken, so that impurity ions can be rapidly and effectively removed, and the purity of the finished products namely the vanadium pentoxide can be effectively improved. The preparation method is simple in technology, the consumption of used reagents is low, few impurities are introduced, and the preparation method is safe, environmental-friendly, pollution-free and low in production cost.

The invention relates to the technical field of polyurethane elastomer preparation, in particular to an environment-friendly and low hardness polyurethane elastomer without plasticizer and a preparation method thereof. The environment-friendly and low hardness polyurethane elastomer provided by the invention is composed of polyol, isocyanate, a chain extender, a hyperbranched polymer, an antioxidant, an anti-UV agent and a catalyst. Through the two steps of prepolymer synthesis and elastomer synthesis, the environment-friendly and low hardness polyurethane elastomer material can be finally obtained. The environment-friendly and low hardness polyurethane elastomer has the advantages of no toxicity, no pollution, stable structure, excellent mechanical properties, etc., and can be used in shoe materials contacting the human body, medical treatment, sports fitness and other fields.

The invention relates to a glycan derivative of a solid lubricant for a drilling liquid and a preparation method thereof. The solid lubricant is prepared from the following raw materials of 35 to 45 parts of polyethylene glycol 400, 1 to 3 parts of boric acid, 1 to 2 parts of catalyst, 10 to 20 parts of white oil, 2 to 5 parts of surfactant, 1 to 3 parts of defoamer, 15 to 25 parts of mica powder,and 20 to 30 parts of talcum powder. The preparation method comprises the following steps of synthesizing polyethylene glycol borate, and preparing the solid lubricant. The solid lubricant has the advantages that the change quantity of appearance viscosity is + / -3.0, the reduction rate of lubrication coefficient is greater than or equal to 80%, and the reduction rate of adhering coefficient is greater than or equal to 50%; the lubricating property is good, the drilling friction drag is decreased, the compatibility with the drilling liquid is good, and the abrasion of drilling tools of drill stems and the like is reduced; the good comprehensive properties, such as high-temperature filter loss and salt-resistant property, are realized; the preparation is simple, the property is stable, thestorage and transportation are convenient, the production cost is low, the poison and pollution are avoided, the biodegradability is realized, and the environment-friendly effect is realized.

The invention relates to a solid-phase preparation method for beta-eucryptite powder. The preparation method comprises the following steps: 1) weighing lithium carbonate, silica and alpha-alumina according to equimolar proportion; 2) subjecting the raw materials weighed in the step 1) to grinding and mixing in a rapid grinding device; and 3) filling an alumina saggar with the raw materials ground and mixed in the step 2), placing the alumina saggar in a high-temperature furnace and carrying out calcining so as to obtain desired beta-eucryptite powder. The preparation method is simple in process, low in equipment requirement, nontoxic and pollution-free; the prepared beta-eucryptite powder has high purity; and the preparation method is suitable for batch production.

The invention relates to an SPC floor comprising the following components in parts by weight: 43.85-58.04 parts by weight of PVC resin powder, 173.51-197.42 parts by weight of rock flour, 2.17-3.51 parts by weight of a regulator, 6.8-7.95 parts by weight of a stabilizer, 0.88-1.17 parts by weight of PE wax, 1.047-1.182 parts by weight of an internal lubricant, and 0.44-0.57 part by weight of carbon black. The SPC floor has the advantages that due to toxic and odorless properties of the PVC resin powder, the prepared SPC flooring has good stability, water resistance and fire resistance, high environmental protection, no pollution, no public nuisance and recyclable utilization, and fundamentally solves the problem that wood products are easy to decay, expand and deform after absorbing waterand being affected with damp in wet and waterish environments; the SPC floor can be used in environments where a traditional wood preparation product cannot be applied and also solves the problem of formaldehyde of other decoration materials. In addition, the invention also discloses a preparation method of the SPC floor and discloses the SPC floor.

The present invention discloses an oily-to-aqueous epoxy anti-rust prime coat and a preparation method thereof, and belongs to the technical field of heavy anti-corrosion coating materials. The oily-to-aqueous epoxy anti-rust prime coat comprises a component A and a component B according to a mass ratio of 5:1-7:1, wherein the component A comprises, by mass, 30-35% of an aqueous epoxy resin curing agent, 4-6% of an auxiliary agent, 40-45% of anti-rust pigment and 20-25% of deionized water, and the component B comprises, by mass, 90-92% of a solvent type epoxy resin and 8-10% of an epoxy active diluent. According to the present invention, compared with the existing aqueous epoxy anti-rust prime coat and the existing solvent type epoxy anti-rust prime coat, the oily-to-aqueous epoxy anti-rust prime coat of the present invention has the better resistance and the better construction performance; and the oily-to-aqueous epoxy anti-rust prime coat has the unique advantages in the construction field, and provides the environmental protection property and the construction safety exceeding the existing solvent type epoxy anti-rust prime coat.

The invention discloses a detachable carpet, and belongs to the technical field of carpets. The detachable carpet comprises a base cloth layer. Waterproof layers are arranged on the top and the bottomof the base cloth layer, clamping strips are arranged on the left sides and the right sides of the top and the bottom of the base cloth layer, fixing grooves matched with the clamping strips are formed in the joints of the two sets of waterproof layers and the base cloth layer, clamping blocks are arranged on the left sides and the right sides of the two sets of waterproof layers, and clamping grooves cooperating with the clamping blocks are formed in the joints of the two sets of waterproof layers and the clamping blocks. The polyurethane layers are low in mass and environmentally friendly,and have good waterproof performance, the waterproof layers arranged on the top and the bottom of the base cloth layer can be conveniently detached and manually cleaned, the structural shapes of the waterproof layers cannot be damaged, the original use performance of the waterproof layers is kept, detaching and mounting of the waterproof layers and the base cloth layer are achieved through the cooperation of the clamping strips and the fixing grooves, and the structure can be firmly connected through the cooperation of the clamping blocks and the clamping grooves.

The invention relates to a nano barium sulfate / cellulose composite membrane with an anti-radiation function as well as a preparation method and application thereof. The nano barium sulfate / cellulose composite membrane is prepared from water body nano barium sulfate and cellulose, wherein nano barium sulfate particles of the water body nano barium sulfate are relatively uniformly dispersed on a basal body of the cellulose; the particle sizes of the nano barium sulfate particles are 30 to 280 nm; the tensile strength of the composite membrane is 24.98 to 51.07 MPa; the composite membrane is of a transparent and porous structure, and the porosity of the composite membrane is 90% or more than 90%. The nano barium sulfate / cellulose composite membrane has the advantages that firstly, the composite membrane is green and environment-friendly; secondly, the agglomeration effect of nanoparticles is reduced, and the nanoparticles are uniformly dispersed on the cellulose basal body; thirdly, the particles can be uniformly dispersed on the cellulose basal body; fourthly, the composite membrane prepared in the invention is high in transparency, large in porosity, non-toxic and non-pollution, has a lasting anti-radiation effect, and is relatively high in stability and uniform in thickness; and fifthly, the composite membrane is applicable to large-scale preparation of anti-radiation cellulose composite membranes.

The present invention relates to the technical field of bras, and in particular relates to a washable quick-drying portable air-permeable bra and a preparation method thereof, the washable quick-drying portable air-permeable bra includes a bra cup part and a back surrounding part which is connected with two ends of the bra cup part, the bra cup part is an air-permeable cotton bra cup part, the back surrounding part is an air-permeable cotton back surrounding part, the bra cup part and the back surrounding part respectively comprise a first adhesive net layer, a first cotton net layer, a cotton layer, a second cotton net layer and a second adhesive net layer; the first adhesive net layer, the first cotton net layer, the cotton layer, the second cotton net layer and the second adhesive net layer are connected from outside to inside in turn, and the first adhesive net layer and the second adhesive net layer are respectively provided with a plurality of air-permeable holes. The washable quick-drying portable air-permeable bra adopts an air-breathable cotton fabric, and the washable quick-drying portable air-permeable bra is excellently light, breathable, skin-friendly, washable, quick-drying and soft, is comfortable to wear and easy to carry, does not produce mugginess feeling, is low tendency to produce mold, does not affect breast blood circulation, is conducive to breast health, can be repeatedly washed and dried, and is suitable for travel women and environmentally-friendly and healthy.