3206results about How to "Has antibacterial properties" patented technology

The present invention provides one kind of water gel containing natural high molecular material and its preparation process. The water gel has cross-linking degree of 70-95 % and water absorption of 500-80000 %, and contains natural high molecular material or its derivative selected from chitin, chitin derivative, chitosan, chitosan derivative, carrageenin, etc. The water gel may have synthetic high molecular material, inorganic filler, cross-linking sensitizer, medicine and other assistant added. It is prepared through radiation cross-linking, with the radiation dosage being 10-40 kGy. The water gel of the present invention has high water absorption, high flexibility, good medicine slow releasing performance, and may be used in wound dressing, etc.

The invention discloses an anti-microbial healing-promoting hydrogel dressing and a preparation method therefor. The main ingredients of the dressing are water-soluble high-molecular polymers, functional polymers with pseudoplastic, anti-microbial agents and water. The above ingredients are dissolved into a whole after a series of technologies. The solution is poured into a mold, and the hydrogel dressing is obtained after curing and irradiation disinfection. The results of wound healing experiments and in vitro anti-microbial experiments show that the hydrogel dressing can promote wound healing effectively, and has good bacteriostatic activity to multiple bacteria (the sterilizing rate is above 70%). The anti-microbial healing-promoting hydrogel dressing is better than existing hydrogel dressings obviously, and has advantages of substantial anti-microbial curative effects, transparency, high water content, simple preparation method, pure product, nontoxicity, innocuousness, no stimulation, good biocompatibility and the like. The hydrogel dressing is suitable for large-area promotion and application.

The invention relates to a method for preparing an environment-friendly silicone-modified acrylate adhesive. Raw materials of the preparation method comprise a basic monomer, a modified monomer and an auxiliary agent, wherein the basic monomer comprises a hard monomer, a soft monomer and a crosslinking monomer; the modified monomer comprises a silane monomer, a coupling agent and inorganic nano-powder; the crosslinking monomer is glycidyl acrylate or glycidyl methacrylate; and the grain diameter of the inorganic nano-powder is less than 80 nanometers. In the preparation method, the crosslinking monomer adopts the glycidyl acrylate or the glycidyl methacrylate so as to be environment-friendly. The product prepared by the method is a nanometer / silicone double-modified molecular composite polymer material. The molecular composite material is combined with the advantages of two polymer materials, namely silicone and polyacrylic ester and an inorganic nanometer material, and has better performance and broad application.

The invention discloses a matrimony vine composite health care enzyme and a preparation method thereof. The matrimony vine composite health care enzyme comprises the raw materials of 1-16 parts of matrimony vine, 0-12 parts of red date, 0-1 part of licorice, 0-4 parts of black rice, 0-2 parts of white hyacinth bean, 0-5 parts of oat, 0-5 parts of tartary buckwheat, 0-3 parts of cassia seed, 0-1 part of chrysanthemum, a lot of honey, a lot of granulated sugar, a lot of high fructose corn syrup and a lot of oligosaccharide. The method comprises the following steps: beating matrimony vine and red date, extracting chrysanthemum and licorice, immersing the cereal and steaming, inoculating Aspergillus oryzae and Kluyveromyces Marxianus yeast and fermenting, and performing pulp refining, sterilizing a mixed liquor, and inoculating lactics for enclosed insulation and fermentation to obtain the matrimony vine composite health care enzyme. The matrimony vine composite health care enzyme stock solution can be prepared to a matrimony vine composite health care enzyme concentrated slurry, an enzyme paste and enzyme powder, and the enzyme powder can be prepared to a matrimony vine composite health care enzyme effervescent tablet, a particle electuary, a chewing tablet, a lozenge and a capsule.

The invention provides a modified polypropylene master batch, melt-blow cloth, a preparation method and an application thereof. The modified polypropylene master batch is mainly produced from, by weight, 77-90% of polypropylene, 5-20% of a graphene material and 1-5% of an additive. The graphene material includes any one or more of graphene, graphene oxide and graphene derivative. The additive includes any one or more of a coupling agent, a dispersant and an antioxidant and preferably includes the coupling agent, the dispersant and the antioxidant. The modified polypropylene master batch, when being used for manufacturing the melt-blow cloth, not only improves antibacterial and electrification property but also increases the filtering efficiency and dust capacity of the melt-blow cloth.

The invention relates to a method for preparing a multifunctional composite nanophase material, which belongs to the technical field of functional materials. The method prepares the multifunctional composite nanophase material by composition of nanophase materials with transparent and heat-insulation functions and nanophase materials with self-cleaning and antifouling functions in proportion. The material has multiple functions of transparency, heat insulation, self-cleaning, antifouling, antibacterium and electrostatic prevention, and can be used for preparing a multifunctional additive or a functional plastic master batch in coating. The multifunctional composite nanophase material accords with the demand and the direction of the modern social development, and has wide development prospect on transparent substrates such as windows and doors of buildings, windows and doors of vehicles, transparent light fittings, telephone booths and newsstands.

A bio-based artificial quartz stone and a production process thereof are disclosed. The bio-based artificial quartz stone includes the following components by weight: 0-80% of quartz sand; 10-70% of quartz powder; 3-20% of curable resin; 0.05-3% of a curing agent; 0.01-40% of lignin; 0-5% of a crosslinking agent; 0.05-5% of a coupling agent; 0-1% of a promoter; 0-2% of a pigment; and 0-3% of a defoaming agent. According to the invention, the lignin is used in the artificial quartz, the environmental pollution of the lignin is reduced, the cost of the artificial quartz is reduced, and at the same time the weather resistance and light stability of the artificial quartz are improved, thus the artificial quartz has antibacterial ability, is green and environmental-friendly, and is suitable for using in building decoration of living environments.

The invention relates to a preparation method of an edible film with antibacterial and antioxidant functions, and belongs to the technical field of edible packaging materials. The preparation method disclosed by the invention comprises the following steps: 1) dissolving and gelatinizing corn starch; 2) dissolving gelatin; 3) dissolving chitosan; 4) adding glycerin and plant essential oil or essential oil components; 5) mixing, homogenizing and refining; 6) degassing; 7) tape-casting; and 8) drying and stripping the film. The preparation method disclosed by the invention has the beneficial effects that the chitosan, the corn starch and the gelatin are taken as base materials of the edible film, the sources of the raw materials are wide, the cost is low, and the prepared edible film has the advantages of strong mechanical properties, high barrier performance and great transparency. Oregano oil, carvacrol and cinnamaldehyde are taken as an antibacterial agent and an antioxidant so as to be added into the edible film, the processing process is simple and easy to operate, the cost is low, the edible film is non-toxic and safe to eat, and the prepared edible film has great antibacterial and antioxidant properties.

The invention relates to a low odor, anti-static electricity, red phosphorus flame retardant thermoplastic composition and a preparation method thereof, and belongs to the field of polymer modification and processing, which includes the following raw materials: by weight, 40-60% of a nylon resin; 5-10% of a microcapsule red phosphor masterbatch; 3%-8%of a compatibilizer; 5-40% of padding; 1-5% of modified activated zeolite powder; 0.5-2% of nanometer magnesium oxide; and 0-5%of other auxiliaries. The modified activated zeolite powder is activated by a natural zeolite powder, and then modified by a cationic surface active agent. According to the low odor, anti-static electricity, red phosphorus flame retardant thermoplastic composition and the preparation method thereof, the low odor, anti-static electricity, and high stability red phosphorus flame retardant thermoplastic composition is prepared by adding the modified activated zeolite powder on the basic formula of the red phosphorus flame retardant thermoplastic composition and simultaneously has a certain antibacterial effect; the thermoplastic composition is capable of being prepared into various sample pieces through extrusion molding, and suitable for coal mine underground equipments, textile equipments and medical health instruments.

The invention belongs to the technical field of new environment-friendly materials, and particularly relates to a ceramal material for manufacturing hydrogen-enriched water and the preparing method and application thereof. The ceramal material is prepared from, by weight, 30-85 parts of base material component, 20-60 parts of hydrogen-enriched component, 2-25 parts of anti-microbial component, and 3-30 parts of binder. The base material component is prepared from tourmaline, serpeggiante, silicon oxide, calcium oxide and zeolite. The hydrogen-enriched component is prepared from magnesium metal powder, magnesia powder and KDF alloy powder. The anti-microbial component is prepared from zinc oxide, titanium oxide and cerium oxide. The binder is prepared from one or more of high-purity distilled water, carboxypropyl cellulose and bentonite. The ceramal material can be used for manufacturing alkalescent water, negative-potential water and hydrogen-enriched water and also has an anti-microbial function and a water activating function. The invention further provides the preparing method and application of the ceramal material. The technology is simple and easy to realize. The ceramal material can be applied to products including water purifiers, water purifying kettles and cups.

The invention belongs to the field of medical implant materials and particularly relates to a novel biodegradable zinc-based metal material and a ureteral expandable stent obtained through the material. The zinc-based metal material is composed of zinc and / or zinc alloy. The zinc alloy is composed of Zn and one or more elements of Mg, Al, Ti, Cu, Ag, Si, Ca, Sr, Y, Zr, Sc, Gd, Nd, Dy, Er, Li, Mn, La, Ce, Pr, Sm, Tb, Ho, Tm, Yb and Lu. The biodegradable zinc-based metal material has good biocompatibility, degradability and mechanical properties, and has wide market application prospects.

The invention relates to a polyvinyl alcohol / chitosan nano fiber film dressing containing nano silver and preparation thereof. The nano fiber film dressing is prepared by the following steps: taking a mixture of polyvinyl alcohol and chitosan as the base material, then mixing nano silver into the polyvinyl alcohol / chitosan nano fiber film through an electrostatic spinning technology, and finally adding glutaraldehyde to crosslink the nano fiber film so as to obtain the target product. The obtained dressing has the characteristics that the preparation technology is simple; a wet environment can be achieved for promoting wound healing; and the dressing has an antiseptic function.

The invention discloses an antibacterial and low-odor decorative polypropylene material used in a saloon car and a preparation method thereof, wherein the material comprises the following components in percentage by weight: 60 to 80 percent of polypropylene, 1 to 20 percent of elastic body, 10 to 30 percent of talcum powder, 1 to 5 percent of photocatalytic micro-powder, 0.5 to 2.0 percent of antibacterial agent, and 0.3 to 1.0 percent of odor absorbent. The polypropylene material can keep low odor enduringly, has antibacterial and mould-proof functions, and has the advantages of strong bactericidal power, quick disinfectant effect, good durability, good stability, no secondary pollution and the like. According to the invention, odorous small molecules such as paraffin, olefins, arenes, amine, phenol, thiol, peroxide, aldehydes, ketones and the like can be effectively removed.

The invention discloses a production technology for an antibiosis moisture exhausting sock. The production technology includes the steps of firstly, preparing materials, wherein fiber used for knitting a fiber layer of the sock body is prepared through a yarn covering or yarn doubling method, knitted base yarn is manufactured, and components of the materials of the base yarn include 20% to 65% of natural bamboo fiber; secondly, dyeing the yarn through a sock dyeing machine; thirdly, conducting softening, wherein softening is conducted on the base yarn through softeners; fourthly, conducting knitting, wherein the base yarn is knitted into the sock body through a knitting machine, the base yarn of the natural bamboo fiber is knitted to form the sock body, and the sock body is sewn; fifthly, conducting disinfection, wherein antibiosis process treatment is conducted on the sock body through a sanitizer WS-8810 and an anti-bacterium agent; sixthly, conducting post processing, wherein the processed sock body is shaped to obtain a finished sock body. The sock has the antibiosis function and the sweat discharging function at the same time, is good in breathability, comfortable and soft and can still keep the extremely-strong antibiosis performance after being repeatedly washed.

The invention discloses a method for preparing a nanometer photocatalyst material supported embedded composite film. The method comprises the following steps: dissolving an organic polymer base film material, a pore-forming agent and a nanometer catalyst in a solvent, stirring and standing to prepare a casting film solution; dispersing the nanometer photocatalyst in the solvent to obtain dispersion liquid, spreading the dispersion liquid on a plate to prepare a spreading solution, and drying the spreading solution to obtain a spreading film; and covering the spreading film with the casting film solution, scraping a liquid film by utilizing a film scraper, immersing the scraped liquid film in a constant temperature gel bath, and curing the liquid film to prepare the nanometer photocatalyst material supported embedded composite film. The invention also provides the nanometer photocatalyst material supported embedded composite film and application thereof. According to the method, a nanometer photocatalyst coating is uniformly, effectively, stably and firmly supported on the surface of the embedded composite film. Moreover, according to the composite film, the removal rate of pollutants is effectively improved, and film pollution is reduced.

The invention relates to biodegradable Mg-Gd-Zn-Ag-Zr series magnesium alloy and a preparation method thereof in the technical field of medical alloy. The alloy consists of Gd, Zn, Ag, Zr and Mg in percentage by weight: 5-10 percent of Gd, 0.5-3 percent of Zn, 0.1-1 percent of Ag, 0.1-1 percent of Zr and the balance of Mg. Through reasonably designing the alloy elements, a long-period stacking order structure (LPSO structure) is formed in an alloy structure; and with the adoption of the structure, the alloy can be strengthened and toughened, and the corrosion resistance and the local corrosion resistance of the alloy can be improved. Through deformation processing and heat treatment, the strong toughness and the corrosion resistance of the magnesium alloy can be further improved. The magnesium alloy provided by the invention is uniformly corroded in simulated body fluid, so that the overall failure of an implant material due to local corrosion is avoided, and no remarkable cytotoxicity exists; and the magnesium alloy can be used as a fixed implant material in the department of orthopedics. After solid solution treatment, the biodegradable Mg-Gd-Zn-Ag-Zr series magnesium alloy has good secondary shaping capability and can be used as an implant material in a blood vessel.

The nanometer polyester fiber FDY spinning oil preparation consists of inorganic nanometer additive, smoothing agent, emulsifier, antistatic agent and other additive. Owing to the added nanometer material, the nanometer polyester fiber FDY spinning oil preparation has excellent smoothing performance, capability of raising the quality of spun yarn, high heat stability, no smoke, simple compounding process, certain antibiotic capacity and other advantages, and is suitable for use in the one-step FDY spinning production line.

The present invention discloses a polymer composite function fibers containing partial graphene, and a preparation method thereof. The fibers comprise a component A and a component B, wherein the component A and the component B are combined in a partial exposing manner, side-by-side manner or skin-core manner, and 20-100% of the outer area of each fiber is the component B. The method comprises: crystallizing a polyester containing 0.1-1 wt% of partial reducing graphene and a polyester containing 4-20 wt% of a nanometer composite filler containing partial reducing graphene and TiO2, drying, carrying out melt composite spinning, and carrying out drawing and relaxation heat setting at a temperature of 80-160 DEG C, and reducing the partial graphene in the fibers to achieve the carbon / oxygen atom ratio of 9 / 1-15 / 1 through the reducing treatment. According to the present invention, the prepared fibers can be produced at the high spinning speed, and the production efficiency is high; and the fibers have characteristics of low single fineness, high strength and lower resistivity, meets the antistatic requirement, and further has characteristics of anti-bacterial property and flame retardant property so as to provide good application prospects.

The invention belongs to the field of aquaculture or feed, relates to a aquaculture feed, and especially relates to an alga immunopotentiation compound feed for litopenaeus vannamei. The invention at first provides an immunity strengthening agent for litopenaeus vannamei feed, and the agent is obtained through enzymatic hydrolysis and fermentation of an alga composite. The alga composite is composed of following components in parts by dried weight: 40 to 50 parts of asparagus, 15 to 25 parts of enteromorpha, 10 to 20 parts of ulva lactuca, 5 to 15 parts of laver and 5 to 15 parts of undaria pinnatifida. The invention further prepares a compound feed for litopenaeus vannamei by utilizing the immunity strengthening agent. The alga immunity strengthening agent contains algae polysaccharide, which has the effect of strengthening animal immunity, acrylic acid, terpenes, brominated phenolic and some sulfocompounds, which have the antiseptic effect, and sulphated polysaccharide, which has the antivirus effect. The litopenaeus vannameis fed on the alga immunopotentiation compound feed have a strong anti-stress performance, the body's immunity ability is improved, survival rate is high and culture benefit is remarkable.

The invention relates to a compound finishing agent and a preparation method thereof. The method comprises a step of compounding chitosan and waterborne polyurethane: dissolving chitosan with an HAc or HCl solution, and adding into a polyurethane aqueous solution with certain concentration. The application is as follows: natural fiber and synthetic fiber fabric and the blended or interlaced fabric thereof are processed to obtain anti-wrinkle / anti-felting / anti-bacterial functions, and the biodegradability of the fabric is improved at the same time. The fabric is soaked and rolled twice in the compound finishing agent, the liquid carry rate is 60-90%, and then the fabric is pre-dried in a heat settling machine before curing. The finished wool textile reaches the machine-washable anti-felting standard of ISO6330 and IWSTM No.31 of International Wool Secretariat; the longitude-latitude wrinkle recovery angel of the finished cotton fabric is 200-210 degrees, the retention rate of the fabric strength is at least 110%, and antibacterial property is obtained; and meanwhile, the hand feeling and biodegradability of the finished fabric are improved, and remarkable economic and environmental benefits are realized.

The invention discloses a concentrated feed containing Chinese herbal medicine for growing-finishing pig. The concentrated feed comprises soybean meal, fish meal, rapeseed meal, stone powder, calcium hydrogen phosphate, soybean oil, and premix; the following Chinese herbal medicine components are added into the concentrated feed: rhizoma atractylodis, processed fleece-flower root, gentian, tangerine peel, white peony root, parched medicated leaven, parched hawthorn, parched malt, medulla tetrapanacis, semen cuscutae, stir-fried betelnut, radix astragali, scutellaria, rhubarb powder, etc. The feed can improve the immunity, disease resistance, and stress resistance of growing-finishing pigs; the feed has improved quality, can enhance the appetite of the animals, and promote the digestion and the absorption; and the utilization rate of the feed is increased, and the breeding cost is reduced. The feed also has blood circulation invigorating, stomach-strengthening, parasite-expelling, and rapid fattening functions.

The invention discloses a method for finishing an antistatic antibacterial and hydrophilic polyester fabric. The finishing method comprises the following steps: step (10) preparing an N,O-carboxymethyl chitosan solution; step (20) performing pretreatment on the polyester fabric by adopting cold plasma; and step (30) dipping the polyester fabric treated in the step (20) by utilizing a polyethyleneimine solution, then dipping the polyester fabric by utilizing a glutaraldehyde solution, and finally, dipping the polyester fabric by utilizing the N,O-carboxymethyl chitosan solution prepared in the step (10), thereby obtaining the treated polyester fabric. According to the finishing method, the polyester fabric has good antistatic antibacterial and hydrophilic performances.

The invention provides a preparation method of a golden red temmku kiln fancy glaze Western-style food dinnerware. In the preparation method, the used ground enamel comprises the following components: 61.4-7.02 of SiO2, 8.6-14.6 of Al2O3, 7.6-13.1 of CaO, 2.9-8.3 of K2O, 1.4-5.9 of Fe2O3, 0.3-2.4 of Na2O, 0.3-1.5 of MnO2, 0.2-1.2 of B2O3, 0.2-1.0 of MgO, 0.09-0.2 of Li2O and less than or equal to0.7 of other components; and the cover glaze comprises the following components: 53.4-58.1 of SiO2, 12.4-20.9 of ZnO, 5.1-14.9 of Al2O3, 3.5-10.6 of CaO, 2.2-8.7 of B2O3, 1.9-7.4 of K2O, 1.1-4.0 of Na2O, 0.4-1.4 of TiO2, 0.4-1.0 of BaO, 0.1-0.8 of MgO and less than or equal to 0.7 of other inevitable components. The process flow is as follows: preparing the green body of the dinnerware; carrying out ball-milling on the ground enamel and the cover glaze slurry; adding 5-10 parts of red zirconium silicate-coated cadmium sulfide selenide pigment in the cover glaze slurry; and glazing on the green body, and finally, completing calcination.

The invention discloses a bacterial cellulose / collagen-chitosan composite material and a preparation method thereof. The method comprises the following steps of: 1) preparing bacterial cellulose and purifying the prepared bacterial cellulose; 2) fully immersing collagen into a bacterial cellulose network by a negative-pressure osmose process or a positive-pressure method, and crosslinking collagen in the bacterial cellulose / collagen composite material by using a cross-linking agent to obtain a bacterial cellulose / collagen interpenetration network composite material; and 3) removing the unreacted cross-linking agent from the composite material, and soaking in an antibacterial agent solution of chitosan or the derivative of chitosan to prepare the composite material with an antibacterial effect. The bacterial cellulose / collagen composite material is prepared by the negative-pressure method or the positive-pressure method, so that the defect of insufficient immersing amount of collagen in other preparation methods is overcome, and the problems of poor effect, long production cycle and high cost are solved; and the prepared composite material is excellent in mechanical property, high in water permeability, high in air permeability, high in biocompatibility, high in biological activity and high in antibacterial property.

The invention relates to slowly-releasing health-care liquid special for directly-spraying landscape plants and a preparation method and use thereof; fertilizer on the market is highly-enriched fertilizer and is mainly used for agricultural production; the fertilizer needs to be diluted 300-2000 times of spray and is characterized by difficult use and easy waste; a product with lower concentration is provided by the invention; the product is directly sprayed to garden flowers, bonsai, lawn and family crops by non-professionals without dilution; the concentration of film forming material provided by the invention is 500-1000 times higher than that of highly-enriched fertilizer so as to form relatively thick breathable film; nutrient substance is contained in films so as to achieve slowly releasing effect and achieve healthy growth, green keeping and freshness retaining effect of the landscape plants; a relatively thick film has antibacterial action and has a certain pest-resistant effect; traditional fertilizer belongs to ''food'' of plants; the slowly-releasing health-care liquid is ''health care products'' of the landscape plants and is applied to the landscape plants such as flowers, bonsai, seedlings, lawn and the like and is also suitably used for family crops which have view and admire as a main function.

The invention belongs to the technical field of organic and inorganic composite materials, in particular to a preparation method of organic and inorganic composite fibrous materials with supercritical carbon dioxide. The method includes pre-treatment and activation treatment of cellulose, doping of inorganic sol to the cellulose, etc. The invention makes use of the strong permeability of the carbon dioxide under supercritical conditions, can activate the cellulose with cosolvent, or lead nano particles in the inorganic sol to be absorbed and settled on the surface of the cellulose to form an even, continuous and stable coating layer; meanwhile, some sol particles penetrate into the fiber, so as to dope plenty of cellulose. The supercritical carbon dioxide adopted by the invention is safe, reliable, non-toxic, no pollutant and recyclable, and is environment friendly green solvent. The method of the invention is simple and easy to be operated, and the hybrid material has broad application prospect.

The invention relates to the field of microwave ovenware coatings, and discloses a coating which comprises a wave-absorbing material and an adhesive, wherein the adhesive is at least one of titanium dioxide sol, silicon dioxide sol, aluminum oxide sol and silicon-aluminum sol. The invention further discloses a preparation method of the coating. The preparation method comprises the following step: in the presence or absence of an additive, mixing the wave-absorbing material with the adhesive. In addition, the invention discloses an application of the coating in preparing microwave ovenware. As the sol is taken as the adhesive, dispersion of the wave-absorbing material can be improved, a thinly coated layer without resin and an ovenware coating which is good in wave absorbing property and antibacterial property can be prepared, problems (that is, when a conventional ovenware wave-absorbing material is used at a relatively high temperature, harmful substances can be easily generated, the conventional ovenware wave-absorbing property and antibacterial property are poor, the appearance attractiveness can be affected and the like) of the conventional ovenware wave-absorbing material can be comprehensively solved, relatively good product experience can be brought to an ovenware user, and thus more and more customers are willing to make baked and barbecue food by using the ovenware.

The invention discloses a vegetarian diet set meal. The vegetarian diet set meal comprises following raw materials, sticky rice, coix seed, black rice, corn, buckwheat grain, oat, milled glutinous broomcorn millet, millet, unpolished rice, sorghum rice, wheat, barley, lucid ganoderma, hazelnut kernel, pine nut kernel, pistachio nut kernel, apricot kernel, sunflower seed kernel, peanut kernel, ginkgo kernel, soybean, black soya bean, black kidney bean, circassian bean, mung bean, pea, broad bean, chickpea, hyacinth bean, sword bean, petits pois, kidney bean, snow bean, green soy bean, dwarf bean, winged bean, hickory kernel, cowpea, pumpkin seed, cashew nut, grape seed, cucumber seed, purple perilla seed, lettuce seed, brassica juncea var seed, Chinese waxgourd seed, bitter gourd seed, chayote seed, gold towel gourd seed, towel gourd seed, winter squash seed, cucurbita pepo seed, bottle gourd seed, and celery seed. According to a preparation method, 159 raw materials which are used contain the comprehensive nutrients needed by human body, nutrient balance and sufficiency are achieved, requirements of people on nutrients are satisfied effectively, effect is excellent, and only natural food materials are used.

The invention provides environment-friendly antibacterial and mildew-proof wallpaper. The environment-friendly antibacterial and mildew-proof wallpaper comprises a base layer, wherein the back face of the base layer is provided with a waterproof coating; a coating layer is arranged on the base layer; a bamboo charcoal fiber layer is arranged on the coating layer; an antibacterial layer is arranged on the bamboo charcoal fiber layer; a diatomite adsorption layer is arranged on the antibacterial layer; a printing embossing layer is arranged on the diatomite adsorption layer and is coated with a mildew resisting coating; a polytetrafluoroethylene layer is arranged on the mildew resisting coating and is provided with a film coating layer. The wallpaper is provided with the coating layer, the antibacterial layer and the bamboo charcoal fiber layer, and the triple effect enables the wallpaper to have a good antibacterial property; the coating layer and the mildew resisting coating are arranged so that the wallpaper is good in mildew resistance; furthermore, the diatomite adsorption layer is arranged so as to further enhance the deodorization capability of the wallpaper; finally, the wallpaper provided by the invention has good antibacterial, mildew-proof and deodorization performance.

The invention relates to a graphene-based haze-resisting mask filtering material and a preparation method thereof. The material has a three-dimensional graphene sponge structure assembled from graphene oxide. The method and an application comprises the following points: (1) cross-linking agents such as ascorbic acid are added into a graphene oxide water solution; with a hydrothermal reaction, graphene slices are subjected to self assembly, such that porous spongy three-dimensional graphene is obtained; (2) the porous spongy graphene has good mechanical strength, and can be cut into different shapes; (3) the structure of the graphene sponge can be regulated through changing the size of graphene oxide and the addition amount of the cross-linking agents; (4) the porous spongy graphene has high specific surface area and relatively high quantity of surface functional groups; and the porous spongy graphene has high absorption effect and certain bacteria resistance. The preparation process of the graphene absorption material has simple process and low cost. With the method, graphene sponge pore size can be regulated. The graphene sponge can be used as a mask filtering sheet which can effectively filter air pollutants such as PM2.5 particles, and can be used in the fields such as dye and oil dirt absorption.