56results about How to "Raw materials are safe and non-toxic" patented technology

The invention discloses degradable corrugated paperboard glue and a preparation process thereof and relates to the technical field of corrugated paperboard glue. The corrugated paperboard glue comprises the following raw materials in parts by weight: 40-60 parts of corn starch, 10-20 parts of polyvinyl alcohol resin, 5-15 parts of ethyl alcohol, 0.2-0.6 part of caustic soda flakes, 1-4 parts of polyethylene glycol, 0.2-0.6 part of defoaming agent, 0.1-0.5 part of stabilizer, 0.02-0.08 part of plasticizer, 0.05-0.3 part of borax, 0.002-0.008 part of titanium tetrabutoxide, 0.005-0.01 part of triphenyl phosphate and 80-150 parts of water; and the preparation process comprises the steps: degrading the polyvinyl alcohol resin; and mixing the materials. The corrugated paperboard glue disclosedby the invention is high in curing speed, bonding strength and degradation rate and incapable of generating environment pollution.

The invention provides a method for preparing a solid light-emitting carbon point, namely, a method for preparing a solid light-emitting carbon point from cereal raw materials such as wheat flour, corn powder, rice powder, sorghum flour and millet flour as a C-containing precursor, and belongs to the field of preparation of nano materials. The method comprises the following steps: by taking cereal raw materials such as wheat flour as the C-containing precursor, preparing to obtain a precursor solution of certain concentration, and performing simple post-treatment under hydrothermal conditions without any chemical reagent, thereby achieving green synthesis of the carbon point which can emit light in both liquid and solid states. The method effectively solves the problems that the carbon point prepared by the traditional method emits light in a solution and the phenomenon of solid-state fluorescence quenching is caused after drying. The raw materials of the preparation method are cheap and easy to obtain, the synthesis route is simple, the raw materials are safe and non-toxic, and the product is completely green. The solid light-emitting carbon point prepared by using the method is powdery, easy to disperse, and beneficial for further utilization. The light can be emitted from the solid just like in a solution, and has obvious dependency of excitation wavelength.

The invention discloses polyethylene glycol dendritic polymers and a preparation method thereof. The polyethylene glycol dendritic polymers are prepared with organic diamine as an initiation core, polyethylene glycol and acrylate as repeated branching units, and double bond or primary amine as a surface functional group. The invention also prepares different algebraic polyethylene glycol dendritic polymers by an enzyme-catalyzed transesterification and then a Michael addition reaction with polyethylene glycol, acrylate and primary amine as starting monomers. The prepared polyethylene glycol dendritic polymers have large cavity inside the molecules which can imbed other small molecules such as drug molecules and the like, and a large number of functional groups on the molecular surface canreact with other molecules. The reaction raw materials are safe and non-toxic, and can be excluded from the human bodies quickly. The preparation method adopting the enzyme-catalyzed transesterification and the Michael addition reaction is mild in reaction conditions, green and environment-friendly, low in cost and easy to realize industrialization.

The invention discloses a polymer powder material for 3D printing and relates to the technical field of 3D printing using materials. Components of the polymer powder material for the 3D printing include teflon, light calcium carbonate, camphor, octadecanoic acid, stabilizers, Pr liquid, inhibitors, silicone adhesive, terpene resin, white balls, aloe vera gel, diatom ooze, acticarbon, dicyclohexylcarbodiimide, nano modified alkyd resin, polyethylene wax, silicone, epoxy vinyl ester resin, graphene powder and organic bismuth antioxidants. The powder of the polymer powder material for the 3D printing has low agglomeration temperature, small shrinkage, small internal stress, high strength and good fluidity. Raw materials are safe and non-toxic. The density of a preparation method is increasedafter subsequent vacuum, hydrogen absorption, hydrogen crushing, dehydrogenation, air grinding and isostatic pressure. A sintering technology makes the performance of the polymer powder material morestable. The crudeness and fineness of the polymer powder material is distributed uniformly after treated, so that the surface of a printed product is more polished and delicate.

The invention discloses a preparation method of olive microcapsules, belonging to the field of microcapsules. In the present invention, the olive fruit is firstly boiled, mashed and homogenized, and then cellulase and pectinase are added to the olive pulp for enzymolysis to obtain the enzymolysis solution, which is sterilized, purified and spray-dried to obtain olive powder, which is mixed with ethyl acetate Mix and set aside, then extract monoglyceride from olive oil as an emulsifier, use maltodextrin and gum arabic as wall materials, and prepare a microcapsule emulsion from the spare olive mixture as a core material, and finally solidify to obtain microcapsules. The invention has simple operation steps, does not destroy the active ingredients of the olive extract, and the prepared microcapsules have a high embedding yield of more than 95%, high stability and strong anti-oxidation ability, and the preparation raw materials are safe, non-toxic and low in cost.

The invention belongs to the field of biomedical materials, and particularly relates to hemostatic gel for nursing and a preparation method thereof. Carboxymethyl chitosan and paeoniflorin with a hemostatic effect and antibacterial peptide and zinc oxide with a bacteriostatic effect are used as active ingredients and are matched with gel matrix materials such as phaseolus vulgaris gum, sodium carboxymethyl cellulose and gelatin to prepare the hemostatic gel for nursing. The hemostatic gel for nursing has a good sealing effect on wounds, can quickly activate blood platelets, enables blood to becoagulated in a short time, and has a very good hemostatic effect and a very good wound infection prevention effect. The hemostatic gel for nursing is suitable for various types of patients, can meetthe requirements of different clinical scenes, and has positive clinical medical significance.

The invention discloses a ceramic powder material for 3D printing, and relates to the technical field of materials used for 3D printing. The ceramic powder material for 3D printing is prepared from the following components: Pr liquid, a dispersant, silicone adhesive, terpene resin, epoxy vinyl ester resin, graphene powder, an organic bismuth antioxidant, albite, Qimen kaolin, zirconium silicate, spodumene, potato starch ether, alkali-free glass fibers, bentonite, strontium carbonate, modified calcite and spodumene. The ceramic powder material for 3D printing has the characteristics of perfectcomponent control, high density, good sphericity, small particle size, narrow particle size distribution range, good dispersibility and fluidity, and the like; the raw materials are safe and non-toxic, and the added dispersing agent is more beneficial to the dispersion of the ceramic powder material; according to a preparation method, the ceramic powder material for 3D printing is prepared by vacuumizing, carrying out hydrogen absorption and hydrogen crushing, dehydrogenizing, carrying out air flow milling, performing isostatic pressing to increase density, and carrying out a sintering process; the prepared ceramic powder material for 3D printing is more stable in performance and good in durability.

The invention relates to a preparation method of a nano-microcapsule adopting chitosan-TPP-KGM as a compound wall material. The preparation method comprises the following steps: preparing chitosan solution with the mass percentage being 0.2-0.5 % (%, w/v), mixing TPP solution with KGM solution, and dropwise adding the mixed liquid of the two substances into the chitosan solution; carrying out magnetic stirring while dropwise adding is carried out till the mixed liquid is completely dropwise added, carrying out further stirring for 15-60 min at 10-50 DEG C, carrying out centrifugalizing, collecting nano-capsules, and carrying out flushing by adopting double distilled water, thus obtaining the chitosan-TPP-KGM compound nano-microcapsule, wherein the CPP-Ca<2+> compound is adopted as a modelmedicine for embedding. The loading rate of the microcapsule for the core material is high, the targeting and slow release effects are very good, and the microcapsule can be widely applied in the aspects including medicine slow release, food industry, biological functional materials, and the like.

The invention relates to a degradation method of livestock and poultry manure antibiotics in particular to a method for producing a safe organic fertilizer by disinfecting livestock and poultry manureat normal temperature and effectively removing antibiotics. The method comprises the following steps: mixing an alkali carbonate-hydrogen peroxide mixed reagent in livestock and poultry manure, or firstly mixing hydrogen peroxide and then mixing an alkali carbonate solution, and standing or mixing and stirring for more than 1 hour so as to obtain the organic fertilizer with the antibiotic contentof less than 10ppb. According to the method, greener and safer carbonate peroxide is ingeniously utilized to destroy the antibiotic structure in the livestock and poultry manure, the activity and thetoxicity of antibiotics are reduced, and germs in the manure are sterilized and inactivated. The simple process does not cause secondary pollution to the environment, the antibiotic content of the treated livestock and poultry manure can be reduced from 4300ppb to about 10ppb and is far lower than the antibiotic content requirement of 750ppb, and the degradation rate is 99.77%; the content of bacteria can be reduced from 9.2 billion/g to below 30,000/g, and the sterilization rate can reach 99.997%. Use is safer, and the potassium carbonate/hydrogen peroxide compound is more suitable for beingused as fertilizer.

The invention discloses traditional Chinese medicine green beverage-removing sun cream, which is prepared from the following raw materials in parts by weight: 16 to 20 parts of traditional Chinese medicine compound extracts, 10 to 18 parts of emulsifying thickeners, 6 to 8 parts of excipients, 2 to 4 parts of plant spices, 6 to 8 parts of moisturizing additives, 2 to 4 parts of honey, 4 to 8 parts of aloe, 3 to 5 parts of perilla leaf extracts and 12 to 18 parts of deionized water. The sun cream has the sunscreen and sunburn treatment effects; the ultraviolet light transmittance is low; no irritation exists on the skin; meanwhile, good toxin elimination and nourishing functions are realized; the effects of effectively removing face beverage, reducing pores and reducing the expected skin vitality are achieved; meanwhile, the preparation raw materials are safe and non-toxic; the materials can be easily obtained; the production cost is lower; the process is simplified; high practical value and good application prospects are realized.

The invention discloses a preparation method of antibacterial coating for food packaging. The preparation method comprises the following preparation steps: (1) adding vermiculite powder and titanium dioxide into plant essential oil, stirring, then adding calcium chloride and polyvinyl alcohol, and stirring to obtain a modified material I; (2) adding oxidized starch, konjac glucomannan, locust beangum, tamarind gum and organic acid into deionized water, stirring, then adding polyethyleneimine, hydroxysafflor yellow A and ethanol, and stirring; (3) adding nano-silver modified hydroxy-terminatedpoly-dimethylsiloxane and the modified material I obtained in the step (1) in the step (2), and stirring; (4) lastly, adding dibutyl sebacate and silicone polyether, stirring, grinding and standing for defoaming to obtain the antibacterial coating. The antibacterial coating prepared by the method has high antibacterial property, has antibacterial duration being up to 18 months, is prepared from safe and nontoxic raw materials, and is very suitable for the application demand in the food packaging field.

Environmentally friendly degradable fibers and a preparing method thereof are disclosed and relate to the field of degradable fibers. Raw materials of the fibers include, by weight, 80-100 parts of polylactic acid, 20-30 parts of straw fibers, 10-18 parts of tert-butyl peroxyacetate, 5-12 parts of an antibacterial agent, 3-10 parts of an isocyanate compatilizer, 6-15 parts of acetic anhydride, 3-8parts of tert-butyl alcohol, 12-25 parts of glycerol, 2-6 parts of an antioxidant and 0.2-1.5 parts of a light stabilizer. The antibacterial agent includes copper citrate, copper rosinate, sodium silicate, nanometer silica and attapulgite. The method includes a step of preparing the antibacterial agent, a mixing and fusing step, and a granulation and spinning step. The raw materials of the degradable fibers are safe and nontoxic, and a process is simple and reasonable. The degradable fibers have excellent resilience, crease resistance, antibacterial performance, heat insulating ability and degradability and are suitable fabrics of down jackets and other clothes.

The invention discloses a method for preparing a fresh-keeping film by adding camellia seed oil. The film is prepared by compounding chitosan and the camellia seed oil; the raw materials are safe and non-toxic; the film is safe and sanitary to use, reduced in water permeable rate and improved in water resistance, improves the water-retaining and fresh-keeping functions of film-coated food, has smooth texture, toughness, air-permeability, water-retaining performance and antibacterial performance, exerts good fresh-keeping effect, and is improved in market values.

The invention discloses a composite board adhesive capable of purifying air and restraining formaldehyde. The composite board adhesive is prepared from, by weight, 100-110 parts of corn protein, 8-9 parts of acrylamide, 2-2.5 parts of maleic anhydride, 8-9 parts of ammonium persulfate, an appropriate amount of sodium hydroxide with the concentration of 40wt%, an appropriate amount of distilled water, 50-55 parts of water glass of the modulus of 2.8, 9-10.5 parts of polyvinyl alcohol, 2-3 parts of ethyl orthosilicate, 1.7-2 parts of sulfamic acid, 1-1.2 parts of silane coupling agent kh550, 3-4 parts of microcrystalline cellulose, 9-10 parts of attapulgite, 2-3 parts of urea, 3-4 parts of glycine and 0.8-1 part of diphenyl dimethoxy silane. The adhesive is excellent in stability and high in binding strength, raw materials are safe and nontoxic, formaldehyde and other ingredients in air can be adsorbed, the effect of purifying air is achieved, and the using range of the adhesive is further enlarged.

The invention relates to a rhizoma curcumae longae extractive containing drug, a preparation method thereof and application of the rhizoma curcumae longae extractive in preparing a drug for treating arthritis. The rhizoma curcumae longae extractive containing drug is prepared from the following raw materials in parts by weight: 30-70 parts of rhizoma curcumae longae, 10-30 parts of semen brassicae, 10-30 parts of fructus chaenomelis, 5-20 parts of ramulus cinnamomi, 5-20 parts of ramulus mori and 5-20 parts of fructus piperis. The drug provided by the invention is particularly effective in treating osteoarthritis and rheumatoid arthritis for patients incapable of tolerating long term therapy of NSAIDs or steroids.

The invention discloses mild antibacterial liquid soap which comprises the following ingredients: a phase A, a phase B, a phase C and a phase D. In percentage by mass, the phase A comprises the following ingredients: 0.01 to 0.1 percent of a metal ion chelating agent, 1 to 5 percent of a humectant, 2 to 15 percent of a thickening agent, 4 to 10 percent of a cationic surfactant and 17.2 to 82.54 percent of water; the phase B comprises the following ingredients: 6 to 30 percent of water, 3 to 15 percent of a rheology modifier and 0.5 to 2 percent of a nonionic surfactant; the phase C comprises the following ingredients: 0.05 to 0.2 percent of a quaternary ammonium salt and 0.3 to 3 percent of a nonionic thickening agent; and the phase D comprises the following ingredients: 0.5 to 2 percent of a pH regulator and 0.1 to 0.5 percent of essence. Through the synergistic effect among various ingredients, good antibacterial capability is realized. Mild, comfortable and healthy skin care effectsare achieved. The preparation method of the mild antibacterial liquid soap is simple, and can easily realize mass production; and no pollution is caused in the preparation process.

The invention relates to topical skin products and in particular to a drug-loaded nanofiber as well as a preparation method and application thereof. The drug-loaded nanofiber contains nanofibers formed by auxiliary components and palmatine loaded on the nanofibers, wherein the content of the auxiliary components is 5-75g relative to the palmatine per gram. The preparation method of the drug-loadednanofiber comprises the following steps: performing electrostatic spinning on a spinning solution containing the palmatine and auxiliary components so as to obtain the drug-loaded nanofiber. The invention furthermore relates to application of the drug-loaded nanofiber in preparation of a topical skin product for inhibiting scars. The drug-loaded nanofiber takes the palmatine as an active ingredient, the drug action of the active ingredient is released in a sustained manner, and the drug-loaded nanofiber has effects of promoting healing, diminishing inflammation, regulating growth and proliferation behaviors of cells and further effectively inhibiting formation and growth of the scars, can be widely applied to the topical skin products, and is particularly used for dressings. The drug-loaded nanofiber disclosed by the invention is prepared by adopting a blend electrostatic spinning method, the preparation process is simple, and the prepared drug-loaded nanofiber is continuous and uniform.

The invention discloses a compound nerve soothing and depressurizing Chinese herb preparation. The compound nerve soothing and depressurizing Chinese herb preparation is prepared from raw materials of, by weight part, 4-8 parts of eucommia ulmoides, 1-3 parts of uncaria rhynchophylla, 2-4 parts of scutellaria baicalensis, 3-5 parts of selfheal, 1-3 parts of leonurus, 2-4 parts of semen raphani, 3-5 parts of semen cassiae, 3-6 parts of kudzuvine root, 2-6 parts of rhodiola rosea, 3-5 parts of gynostemma pentaphylla, 10-14 parts of circulation-invigorating and anti-thrombosis additives, 8-12 parts of kidney nourishing and qi tonifying additives, 7-9 parts of diuretic and cathartic additives and 20-30 parts of shaping agent. The compound nerve soothing and depressurizing Chinese herb preparation is simple in brewing, good in depressurizing effects, low in toxic and side effects and capable of achieving effects of nerve soothing, liver calming, yang suppression, liver-fire clearing, blood pressure fluctuation suppression, heat clearing and detoxicating, thereby being applicable to long-term taking of patients suffering from liver-deficiency type hypertension. Meanwhile, the compound nerve soothing and depressurizing Chinese herb preparation is safe and toxic-free in preparation raw materials, simple in material acquisition, low in production cost, concise in process, high in practical value and good in application prospect.

The invention discloses a flame retardant resin tile. The resin tile is made from the following raw materials in parts by weight: 80-100 parts of phenolic resins, 30-50 parts of No.196 unsaturated polyester resin, 20-30 parts of No.3301 unsaturated polyester resin, 0.5-2 parts of an antioxidant BHT, 2-5 parts of chlorinated paraffin, 0.5-2 parts of antimonous oxide, 0.8-1.5 parts of silicon dioxide, 3-8 parts of sodium pyrophosphate, 1-5 parts of polyisocyanate, 10-30 parts of aluminum oxide fibers, 0.2-1 part of gamma-methacryloxypropyltrimethoxysilane and 0.5-2 parts of an ultraviolet light absorber UV-234. According to the invention, safe and non-toxicity raw materials which are reasonable in proportioning are selected for the resin tile, and therefore, the resin tile has strong stability and corrosion resistance, is good in flame retardance, and is suitable for large-scale production.

The invention discloses a photo-thermal heating biomass-based multifunctional photo-thermal protective coating and a preparation method thereof.The preparation method comprises the steps that cellulose is put into a tubular furnace to be calcined, carbonized hollow microtubes (CHMT) are obtained, then the CHMT is dispersed into an organic solvent, a certain amount of thermosetting resin and a certain amount of curing agent are added, and finally the coating is prepared. The coating is coated on the surface of a base material through a spraying or dip-coating process, and the multifunctional anti-icing and deicing coating is obtained after curing. The preparation process is simple, CHMT and resin are good in compatibility, construction of a three-dimensional network structure is facilitated, heat transfer is accelerated, meanwhile, heat loss can be reduced through the hollow structure, and the temperature of the coating can be increased more rapidly. And the prepared coating has excellent chemical stability and mechanical stability.

The invention discloses a planting method of silicon-rich fresh citrus Bingtangju. The planting method comprises the following steps: uniformly mixing calcium superphosphate, lime, diatomite, decomposed livestock excrements and polyaspartic acid to obtain a fertilizer, stirring the fertilizer with soil to obtain a mixture, filling a pit with the mixture to prepare a medium, planting seedling intothe medium, and carrying out covering with straw. A rooting agent is supplemented during the growth period of the citrus Bingtangju, and additional fertilizer is added, so that plant growth is promoted, nutrient substances required by plants are provided, and finally the silicon-rich citrus Bingtangju is obtained.