141results about How to "Safe and non-toxic" patented technology

The invention relates to a botanical natural disinfectant, which is characterized in that the disinfectant is prepared by mixing active components including patchouli essential oil and composite of various plant essential oils and solvent; wherein, the active components are prepared by mixing 0.5 to 30.0 percent of patchouli essential oil, cinnamon essential oil, perilla essential oil, eucalyptus essential oil, litsea cubeba essential oil and citronella essential oil and are used for preventing the crop disease caused by plant pathogenic bacteria. Compared with the original disinfectant, the botanical natural disinfectant has the advantages of good broad spectrum sterilization, safety to non-target organism and environment-friendly biodegradation.

The invention relates to a high-temperature protective coating for a hot-rolling heat pretreatment process of nickel base alloy steel. The coating powder comprises the following components: 20%-40% of Al2O3, 10%-30% of SiO2, 10%-20% of MgO, 10%-20% of TiO2, 5%-15% of CuO, 5%-15% of Y2O3, 0%-1% of Na2O and 0%-1% of K2O, wherein Al2O3 and SiO2 are from one or two of Kyanite and aluminum ash, and TiO2 is from rutile ore. A binder in the coating is mixed from one or more selected from sodium silicate, potassium silicate and silica sol, and a dispersant is carboxymethyl cellulose. For usage, the powder and water are mixed and milled into a slurry according to the weight ratio of 2:1; the slurry is added with the binder accounting for 5-10 wt.% of the slurry, and the dispersant accounting 1-2 wt.% of the slurry; the mixture is well mixed and milled to size of 200-600 mesh to obtain the coating. The coating can be directly sprayed on billet below 800 DEG C, and can effectively solve the problem of hard descaling in heat treatment of nickel base alloy at 1200-1350 DEG C.

The invention discloses an electrogalvanizing method based on a choline chloride-xylitol deep eutectic solvent, belonging to the technical field of electroplating. According to the method, xylitol, choline chloride and distilled water are mixed at a constant temperature to obtain a transparent deep eutectic solvent; then zinc chloride is added into the deep eutectic solvent, and then the mixture is mixed at a constant temperature to obtain a zinciferous deep eutectic solvent which serves as electroplate liquid; a pure zinc plate serves as an anode; low-carbon steel serves as a cathode; and the anode and the cathode are dipped in the electroplate liquid for performing continuous current electroplating. The galvanization technology disclosed by the invention is safe and non-toxic, and is environment-friendly and economical; and the problem of environment pollution existing in borofluoride galvanization, halide galvanization and other processes is solved.

Provided are a high-quality, lithium-rich and manganese-based positive electrode material for a lithium ion battery and a method for synthesizing same. The method comprises the following steps: preparing a precursor by complexing an amino acid and a nickel-cobalt-manganese metal, mixing the above-mentioned precursor with a lithium salt, and subjecting same to ball-milling, drying and calcination to obtain a finished product. The amino acid is used as a complexing agent, benefiting the coprecipitation of the three transition metals, achieving the uniform distribution of each metal element in a material, improving the comprehensive electrochemical performance of a lithium-rich and manganese-based material, and improving the quality of the material. The lithium-rich and manganese-based material prepared by the method has characteristics such as a high tapped density, a high compaction density, and a better electrochemical performance.

The invention discloses an indole-3-acetic acid molecularly imprinted magnetic cellulose microsphere and a preparation method and applications thereof, which relate to a nano magnetic cellulose molecularly imprinted microsphere and a preparation method and applications thereof. The invention is designed for solving the problem that an existing IAA (indole-3-acetic acid) detection method is complicated in step, time-consuming, quantitative in jamming and high in cost. The indole-3-acetic acid molecularly imprinted magnetic cellulose microsphere disclosed by the invention is prepared from an IAA, 4-VP, silanized beta-CD (beta-cyclodextrin), DMSO (dimethylsulfoxide), nano magnetic cellulose microsphere particles, a crosslinking agent, styrene, an initiator and water. The method comprises the following steps: 1, activating cellulose; 2, dissolving the cellulose; 3, preparing nano Fe3O4 magnetic liquid; 4, preparing nano magnetic cellulose microsphere particles; 5, silanizing beta-cyclodextrin; and 6, preparing the IAA molecularly imprinted magnetic cellulose microsphere. The indole-3-acetic acid molecularly imprinted magnetic cellulose microsphere disclosed by the invention, as an adsorbent, is used for quantitatively detecting the content of an indole-3-acetic acid in plant tissues.

The invention discloses benzoperylene imide derivatives, and a preparation method and application thereof. The structural formula of the benzoperylene imide derivatives is disclosed in the specification. The benzoperylene imide derivatives are prepared by carrying out multiple reactions on the initial raw material 3,4,9,10-perylene tetracarboxylic acid anhydride. The benzoperylene imide derivatives have strong blue light absorptivity, the molar absorption coefficient at the maximum absorption wavelength reaches 50000 mol<-1>cm<-1> above, the benzoperylene imide derivatives have no absorption in other visible light regions within the range of 500-800nm; and the spectrum properties of the derivatives can be utilized to prepare the blue light absorbing material which is applicable to the field of daily high-energy short-wave radiation prevention, such as mobile phone screen anti-blue-light coatings, eyeglass anti-blue-light coatings, paper anti-blue-light painting and the like.

The invention relates to a preparation method of an edible antibacterial membrane, and belongs to the field of green degradable packaging materials. More specifically, the invention relates to the preparation method of the edible antibacterial membrane. The edible antibacterial membrane is prepared by taking chitosan as a base material, glycerinum as a plasticizer, and beta-acidic hydrogenation derivative hexahydro beta-acid in lupulus barras as a bacteriostat, mixing and cross-linking the chitosan and the glycerinum, uniformly dispersing the hexahydro beta-acid to a film-forming solution, coating a film through a flow casting method or a spraying method, and drying at a specific temperature. The used raw materials of the edible antibacterial membrane obtained by the method are all from biologically degradable environment-friendly materials of natural animals and plants, the obtained antibacterial membrane can effectively inhibit common food spoilage bacteria, such as staphylococcus aureus and escherichia coli, and a packaging material with biological activity is provided to food industry.

The invention relates to a slow release natural pesticide, consisting of patchouli essential oil, an emulsifying agent and a slow release formulation; wherein, the emulsifying agent is non-ionic surfactant, the slow release formulation is alginate, cellulose or cyclodextrin. The preparation method comprises the following steps: 0.1 percent to 7.0 percent of patchouli essential oil is dispersed into the non-ionic surfactant, and the obtained mixture is mixed with the alginate, cyclodextrin or cellulose, then the mixture is dried and granulated; the preferable condition is that 0.25 percent to 4.00 percent of patchouli essential oil is dispersed into 4.0 percent to 10.0 percent of polyoxyethylene sorbitan monooleate, the obtained mixture is mixed and stirred with sodium alginate or Beta-cyclodextrin or carboxymethyl cellulose for 5 to 20min at the temperature of 10 to 100 DEG C and with the speed being 500 to 2,000r/min, then the mixture is dried and granulated. The slow release natural pesticide has the advantages of single object organism, safe non-target organism, high activity, no residue and easy degradation, and is applicable to long and effective prevention of crop diseases.

The invention discloses a composite phase change material for microwave heating energy storage, as well as a preparation method and application thereof. The composite phase change material comprises a phase change material and graphene, wherein the mass ratio of the phase change material to the graphene is 1:(0.01-0.05); the phase change temperature of the composite phase change material is 54-62 DEG C; the heat of fusion is 200-220 J/g; the density is 0.9 g/cm<3>. According to the composite phase change material for the microwave heating energy storage, as well as the preparation method and application thereof, the design is simple; no harsh environment such as vacuum in the production process is needed; the cost can be reduced; a safer effect is realized; mass production on a large scale can be realized; microwaves are utilized to rapidly heat a vacuum cup and a large amount of heat energy is stored; the daily heat preservation demand for beverages is met; the heat preservation time is long; the cost is saved; no additional device is used.

The invention discloses a preparation method of injectable chitosan-oyster shell hydroxyapatite temperature-sensitive hydrogel. The preparation method comprises: preparing a chitosan acetate solutionand a sodium beta-glycerol phosphate solution, putting 9ml of the chitosan acetate solution into a beaker, putting the beaker into a constant temperature stirring water bath pot, carrying out stirringat a middle rate under the action of a magnetic force for 5min, simultaneously, slowly adding 2.5% of oyster shell nano-hydroxyapatite powder into the solution, carrying out stirring for 0.5h to obtain a hydrogel stock solution, treating the hydrogel stock solution and the sodium beta-glycerol phosphate solution in an ice bath for 15min, adding 1ml of the sodium beta-glycerol phosphate solution treated by the ice bath into the hydrogel stock solution drop by drop, and carrying out stirring in the constant temperature stirring water bath pot at 30 DEG C at a middle stirring rate under the action of a magnetic force for 10min to obtain the injectable chitosan-oyster shell hydroxyapatite temperature-sensitive hydrogel. The hydrogel has the characteristics of injectability, temperature sensitivity, safety and non-toxicity and can be used as a bone repair material.

The invention discloses a small anti-microbial dustproof cleaning-free fashionable mask which comprises a mask body, an outer decorative layer and hanging ropes. The mask body is made of multiple layers of nano-silver non-woven gauze and is in fit with the face of the human body in shape, the left side and the right side of the mask body are provided with the hanging ropes used for being fixed to ears of the human body, the outer surface of the mask body is coated with a layer of waterproof and dustproof breathable film, the outer surface of the waterproof and dustproof breathable film is coated with a layer of photocatalyst coating, the outer decorative layer is of a net structure, and the outer surface of the outer decorative layer is coated with fluorescence or reflective materials with different colors. The mask is fashionable, attractive, capable of avoiding face exposing, anti-microbial, dustproof and meanwhile capable of omitting troublesome of cleaning and disinfection.

The invention discloses a method for promoting a biofilm culturing effect by modifying the surface of polyurethane. According to the method, polyurethane is used as a template material in a layer-by-layer self-assembly process; iron and manganese ions cover the surface of the material through pretreatment of an iron-manganese salt solution, so that the surface of the material has certain surface positive charges; and plasma grafting modification is carried out to generate a large number of active free radicals on the surface of the material, covalent reaction with sodium alginate is carried out, finally, a layer-by-layer self-assembly process is realized under the driving of electrostatic force between a polyanion compound sodium alginate and a polycation compound chitosan, and therefore,a stable layered composite structure is formed on the surface of the material. By chemically modifying the surface of polyurethane, the obtained plasma modified iron and manganese ion-sodium alginate-chitosan layer-by-layer self-assembly material is good in biocompatibility, high in chemical stability, safe, non-toxic, simple to operate, low in cost and easy to obtain. By using the method, the microorganism immobilization efficiency can be effectively improved.

The invention relates to a natural fruit and vegetable anti-mildew and antibacterial combined fumigation granule. The combined fumigation granule comprises a fumigation composition and an adsorbing granule. The fumigation composition is prepared from the following components by weight percent, 15-65% of essential oil, 35-85% of vegetable oil and 0.1-1% of antioxidant. The adsorbing granule is madeof a porous material of natural origin, and the adsorbing granule is made from one or a combination of corn cob, activated carbon, akadama soil and vermiculite. Essential oil slow-release fumigationgranule raw materials are all derived from nature or plants itself, and are safe and non-toxic to use; excessive treatment of fruits and vegetables is avoided, and space, equipment and personnel inputrequired for treatment are saved; the use method is simple, only a certain quantity of granule products is weighed and placed in a net bag, the net bag is placed and/or hung in different positions ofa storage space, and finally continuously protecting fruits and vegetables from being contaminated by bacteria is realized, and the granule does not directly touch the surfaces of fruits and vegetables. The granule can be widely used in the fields of fruit and vegetable transportation and fruit and vegetable storage.

The invention discloses microcapsule-filled sodium alginate-based hydrogel and a preparation method thereof. The method comprises the following steps: dissolving zein with an ethanol solution to obtain a dissolving solution, adding a hydrophobic functional substance and a surfactant into the zein solution, and preparing to acquire a zein-based microcapsule emulsion by adopting an anti-solvent method; meanwhile, adding sodium alginate into water, heating and stirring under a water bath condition to obtain a sodium alginate solution, adjusting the pH value of the system, sequentially adding thezein-based microcapsule emulsion and the CaCl2 solution, stirring, and aging for a period of time to obtain the microcapsule-filled sodium alginate-based hydrogel. The prepared composite material hasthe characteristics of hydrogel and microcapsules, has the advantages of being good in structural stability, capable of loading various hydrophobic functional substances, good in controlled release property and the like, and has wide application prospects in the fields of biological medicine, food processing and the like.

The invention discloses a vehicle-mounted perfume. The vehicle-mounted perfume is prepared from the following raw materials in parts by weight: 70-80 parts of ethanol, 15-20 parts of basil, 15-20 parts of shaddock peel, 15-20 parts of mixed petals, 10-15 parts of folium eucalypti, 3-6 parts of galaxolide, 1-3 parts of citrate, 1-2 parts of isopropyl myristate, 1-2 parts of ethyl maltol, 0.5-1 parts of dipotassium glycyrrhizinate and 0.1-0.5 part of sodium ethylene diamine tetracetate. The invention further provides a vehicle-mounted perfume box. The perfume box is of a cube and comprises a perfume box cover body and a perfume box body, wherein the perfume box cover body and the perfume box body are clamped and fixed; the perfume box body comprises a box body and a volatilization mechanismmounted in the box body; and the volatilization mechanism comprises a stirring device and a fan device. The vehicle-mounted perfume has the efficacies of refreshing and mind, promoting mentality, adjusting nerves and easing mental anxiety; and meanwhile, the volatilization speed of the perfume can be adjusted according to different selective requirements and environment temperatures, so that the vehicle-mounted perfume is convenient and safe to use.

The invention discloses a method for filling and synthetizing full waterborne polyurethane base leather through nano attapulgite. The method includes adopting non woven fabrics as the base fabric, and soaking the non woven fabric in NaCl water solution; drying and ironing the soaked base fabric, and calendering the surface; adopting attapulgite as raw material, smashing, soaking in water, extruding through opposite rollers, aging and adding anionic waterborne polyurethane for high speed pre-dispersion; adding foaming agent, foam stabilizing agent and aqueous colorant sequentially, mixing at high speed, and obtaining waterborne polyurethane synthesis leather slurry; soaking the pretreated base fabric in the waterborne polyurethane synthesis leather slurry, scraping the surface, drying, and obtaining the waterborne polyurethane base leather. The attapulgite filler is low in cost and easy to prepare, the synergistic reinforcement effect of fibrillar attapulgite and associated minerals is played completely, the mechanical property of the synthesis base leather is improved effectively, organic solvent is omitted during production, safety and environment protection can be achieved, the process is easy and simple to implement, and large-scale production is easy to implement.

The invention provides a mucosal adjuvant. The mucosal adjuvant is prepared by copolymerization crosslinking compounding of oligo-chitosan and lymphotactin encoding plasmids. The invention also discloses a preparation method and a use of the mucosal adjuvant. When the mucosal adjuvant and a gene vaccine composed of chitosan or oligo-chitosan are synchronously dropped into a nasal cavity for immunization, coxsackievirus specific serum antibody and systemic (spleen and lymph glands) Th1-type immune responses are induced and especially, intestinal mucosa partially-reinforced specific-secretion-type sIgA and IFNgama+Th1 responses are induced, and thus a gene vaccine used with the mucosal adjuvant is obviously superior to an exposed gene vaccine and effectively prevents coxsackievirus-caused myocarditis. The mucosal adjuvant can be used as a novel mucosal vaccination adjuvant.

The invention discloses a furniture protection paint, which is prepared from the following materials: water-based acrylic emulsion, organosilicon modified polyurethane resin emulsion, modified bentonite, ammonium polyacrylate, sodium molybdate, carboxymethylcellulose sodium, sucrose ester, calcium magnesium powder, triethanolamine, isobutyric acid isobutyl ester, propylene glycol ether, propylene glycol alginate and deionized water. The paint prepared by the invention has good hardness, wear resistance and weatherability, strong protective effect on furniture, prolongs the service life by 20 to 30%, and has good gloss, enhances the beautiful appearance of the product, and also has the characteristics of safety and non-toxicity.