37results about How to "No toxic substances" patented technology

The invention discloses a light-silicon fiber crack-proof reinforcer of concrete in the making domain of organic and inorganic material, which comprises the following parts: anhydrous calcium sulphoaluminate, raw alunite, ripe alunite, anhydrite, naphthalene-system high-effective dehydragent, grammite, polypropylene fibre, sodium lignosulfonate and coal ash. The invention confers high-density and superior constructing property for concrete with modified boundary structure and high-concrete compactness, strength and durability, which improves stretching resistance greatly.

The invention relates to a method for extracting and purifying alpha-linolenic acid. The method comprises the following steps of: 1, pre-treating a raw material of alpha-linolenic acid raw oil; 2, carrying out ethyl esterification on the pre-treated alpha-linolenic acid raw oil; 3, preliminarily purifying the alpha-linolenic acid by using a gradient freezing method to obtain the alpha-linolenic acid of which the purity is greater than 70%; and 4, further purifying the alpha-linolenic acid by using a three-stage molecular distillation method to obtain the alpha-linolenic acid of which the purity is 90.5-92.5%. The method has the beneficial effects that the purity of the product is high, the alpha-linolenic acid of which the purity is 90.5-92.5% is obtained, and a pure physical extracting and purifying method is adopted to replace the conventional urea inclusion process and ensure that the alpha-linolenic acid product does not have urea residues and toxic substances.

The present invention relates to a biodegradable soybean protein plastic and aims at providing a biodegradable material capable of degrading completely and being high temperature resistant. The preparation process of the biodegradable material includes the following steps: stirring and reacting soybean protein with modifier at normal temperature to obtain modified soybean protein; mixing modifiedsoybean protein in 20-80 wt% and glycerin as plasticizer in 20-80 wt% via stirring; and forming.

The invention relates to a preparation method of a positive pole material of a lithium ion battery. The preparation method comprises the following steps of: dissolving a high-valence manganese salt, a low-valence manganese salt and an oxidant in deionized water according to the stoichiometric ratio, stirring and uniformly mixing to get a mixed solution; performing hydrothermal reaction on the mixed solution to get slurry; filtering, washing and drying the slurry to get a delta-MnO2 nano-sheet material; uniformly mixing a lithium salt and the delta-MnO2 nano-sheet material according to the stoichiometric ratio to get a mixture; putting the mixture into an organic solvent, uniformly stirring, and then drying at room temperature to get powder; sintering the powder in an oxidizing atmosphere, washing, drying and grinding to get the positive pole material of the lithium ion battery. The invention further provides the positive pole material of the lithium ion battery. The positive pole material of the lithium ion battery, provided by the invention, has the characteristic of good cycling performance.

It is a sort of sewing thread and yarn with self-lock function and its manufacturing method. A special fusible compound was coated on the sewing yarn in certain conditions and this compound can be activated to gain self-lock function. Blare retaining property and smooth surface character could be optimized by this method. Enhanced cohesion can also be obtained by the yarn.

The invention discloses an anti-flaming thermal-insulation environmentally friendly polymeric foaming material and a method for producing the material. The method comprises the following steps: preparing a urea resin foam adhesive by successively adding 37 % of formaldehyde, polyvinyl alcohol and glycerin in a reaction kettle and stirring to heat up and then adding urea, hexamethylene tetramine, stabilizer and thiourea, preparing a foaming agent by firstly adding water in a stirring tank, successively adding nekal and nonylphenol polyoxylethylene ether with stirring, heating up for completely dissolving, and then adding phosphoric acid, glycerin and sodium phosphate, uniformly stirring until completely dissolving, and discharging and packaging, and preparing a foamed product by taking the urea resin adhesive, urea and the foaming agent, mixing and stirring uniformly, putting in a foaming machine to foam, and carrying out foaming, extrusion molding, drying and packaging. The invention can be widely applied in thermal insulation of building facilities, thermal insulation of venue decoration, shock absorption, replacement of benzene plate flexible package without anti-flaming property, and the like.

The invention provides a preparation process of MAME (methyl 3-methoxyacrylate) and belongs to the technical field of synthesis of organic compounds. According to the preparation process, methyl acrylate and excess methanol taken as starting raw materials are subjected to an addition-etherification reaction in an oxygen atmosphere under the action of a synthetic catalyst, a product is subjected tofiltration and extraction, methyl 3,3-dimethoxypropionate is obtained and subjected to a catalytic cracking reaction, MAME and methanol are generated, the target product MAME is obtained through distillation, and methanol is recovered, wherein the synthetic catalyst is cobalt oxide, indium oxide or a mixture of cobalt oxide and indium oxide in any proportion. The preparation process is simple andefficient, the yield of the product MAME is higher and reaches 78%-82.4%, the catalyst can be recycled for a long time, corrosive and toxic substances are avoided, reaction equipment cannot be corroded, industrial production can be realized, and considerable economic benefits are created.

The invention relates to animal fat and an extraction method thereof. The extraction method comprises the following steps: (1) putting animal fat tissues into a reactor while stirring, heating up to 55-60 DEG C, and performing heat preservation for 3-5 hours; (2) heating up to 77-83 DEG C and performing heat preservation for 1-3 hours; (3) adding enzymolysis animal protein powder, heating up to 97-103 DEG C, and performing heat preservation for 1-3 hours; (4) adding ingredients, stirring uniformly, cooling to 55-60 DEG C, and stopping stirring and heating for 0.5-1 hour; (5) continuing to stir, and heating up to 97-103 DEG C, and performing heat preservation 1-3 hours; (6) cooling to 55-60 DEG C and adding a fragrance base; (7) cooling to 40-45 DEG C, stirring uniformly, isolating to obtain ointment; (8) grinding the ointment with a colloid mill to obtain the animal fat. Less oil fume and no toxic substance are produced in a low-temperature extraction process; the extracted animal fat has advantages of good uniformity, good taste, high nutritional value and excellent color.

The invention relates to a compound modifier dedicated for food baking. The compound modifier is made by taking polyalditol as a main raw material and taking triglycerol monostearate and aspartame as adjuvants, wherein, the modifier is made from 10-60 parts of xylitol, 1-50 parts of sorbitol, 0.1-1.0 part of the triglycerol monostearate, 0.01-0.10 part of the aspartame and 0.001-0.015 part of sodium diacetate. The compound modifier dedicated for food baking can quickly ferment and cause soft, big and tasty bread, suppress bread aging and prolong shelf life of the bread. Various indexes of the compound modifier reach the level of similar products abroad. The modifier has the beneficial effects of being suitable for diabetics and obese people.

The invention discloses a fire and flame resisting material. The fire and flame resisting material is prepared from, by weight, 8-9 parts of flame retardation polyether, 13-15 parts of calcium carbonate, 3-5 parts of molybdenum trioxide, 4-6 parts of polycarbonate, 8-11 parts of pentaerythritol, 7-9 parts of silica, 3-5 parts of magnesium hydroxide, 30-42 parts of epoxy resin, 12-14 parts of potato starch, 5-8 parts of diethyl phthalate, 6-10 parts of stearic acid and 12-15 parts of gypsum. The fire and flame resisting material has the advantages of good fire resistance, strong flame retardation capability, no toxic substances, substantial environmental protection performance, and no decomposition of toxic substances in the high temperature process.

The invention relates to an automatic counter for activity frequency of wild rats of a grassland ecosystem. The automatic counter comprises a box, wherein a power switch is arranged on one side of the box, and sounding windows I and II are arranged on the other side of the box; infrared detectors are arranged in the sounding windows I and II and are provided with USB (Universal Serial Bus) external interfaces; a power control panel, a timer, an electronic real-time counter, a current signal converter, a signal amplifier and a digital memory are arranged in the box respectively; the power control panel is provided with a power supply and a power indicator lamp respectively; the power supply is connected in series with the power switch, the infrared detectors I and II, the timer and the power indicator lamp, and is connected with the electronic real-time counter, the current signal converter, the signal amplifier, the USB external interfaces and the digital memory respectively; the infrared detectors I and II are connected with the electronic real-time counter through the signal amplifier and the current signal converter; the electronic real-time counter is hooked up with the USB external interfaces through the digital memory. The automatic counter is convenient, safe, real-time and accurate.

The invention discloses a novel LED light source substrate, a production method thereof and an applied fluorescent lamp thereof. The substrate is made of a good heat conductor, wherein a plurality of reflector cups are stamped on the substrate; reflector layers are plated on the paraboloids in the cups; light emitting wafers are fixed on the bottoms of the reflector cups; the surface of the substrate is provided with a heat-conductive insulating layer on which circuits and solder points are laid on the heat-conductive insulating layer; an FR4 flame resistant material for covering the laid circuits is covered on the heat-conductive insulating layer; and two leading-out lead wires on the light emitting wafer are soldered on the corresponding solder points. The light source substrate of the invention has the advantages of high light conversion efficiency, energy conservation, environment protection without toxic substance, high reliability and the like; and because a light source drive device is arranged out of a fluorescent lamp tube, heat productivity is low and the power consumption is over 50 percent lower than that of the conventional fluorescent lamp. Simultaneously the LED light source substrate is suitable for the production and the use of the fluorescent lamps with different sizes such as T5, T4, T8, T10 and the like according to actual need.

The invention provides a novel metal product. The novel metal product comprises a base layer, zinc layers, paint layers and transparent protective coatings, wherein the zinc layer is arranged on each of two sides of the base layer, the paint layer is arranged on each of two sides of each zinc layer, and transparent protective coatings are arranged on two sides of each paint layer. The novel metal product disclosed by the invention has a simple structure and simple design, the surface mechanical hardness of the metal product is enhanced, and the abrasion of patterns on the metal product can be reduced, the service life of the metal product is prolonged and the glossiness of the surface is reduced due to the transparent coatings.

The invention provides a method for improving the content of peanut secretory peptide of peanut hairy roots, and belongs to the field of genetic engineering. A secretory peptide gene is cloned from peanut, a plant gene expression vector is constructed, the peanut hairy roots containing the peanut secretory peptide gene are obtained by an agrobacterium rhizogenes mediated method, the expression ofthe peanut secretory peptide gene in the transgenic peanut hairy roots is identified, the biomass of the peanut hairy roots is determined, the expression level of the peanut secretory peptide is determined by a Tricine SDS-PAGE method, and the content of the peanut secretory peptide is determined by a BCA protein quantitative detection method. The method adopts the peanut hairy root system to produce the peanut secretory peptide, has the advantages of simple operation, short cycle, high output, low cost, biological activity and the like, and is a relatively economic and efficient preparation method of the peanut secretory peptide.

The invention discloses a modified amylase-based nanometer helical oil phase-triggered quick-release material and a preparation method thereof. The preparation method comprises that amylase which can form a helical structure is modified, then is coated with hydrophobic vein center action drugs such as propofol and forms a helical brain localization quick-release system. The helical brain localization quick-release system has good dispersibility in a water phase, has uniform particle sizes, has a stable particle size for a long time, does not leak propofol easily, can be stored easily, and reduces propofol injection pain. After being triggered by the oil phase, the modified amylase-based nanometer helical oil phase-triggered quick-release material can fast release propofol and is conducive to fast release of propofol at the blood-brain barrier. The preparation method has simple processes, adopts the nontoxic raw materials, does not produce toxic substances in production, carries out disinfection easily and can be industrialized easily.

The invention provides a method for preparing N-(2-Methylphenyl)-2-(propylamino)propa-namide. The method comprises the following steps: (1) carrying out amidation reaction based on o-toluidine as a raw material, 2-chloropropionyl chloride as an amidation reagent and potassium cardonate as a catalyst, and preparing an intermediate; (2) carrying out ammoniation reaction on the intermediate prepared in the step (1) and propylamine, so as to prepare crude prilocainum; and (3) dissolving the prepared crude prilocainum in ethyl acetate or acetone, and regulating the pH value to 1-3 with more than or equal to 35% concentrated hydrochloric acid so as to salify. The method has the advantages that harsh reaction conditions such as high temperature, high pressure and the like do not exist in the process route, raw material is available, operation is simple, yield is high, and the method is suitable for industrial production.

The invention relates to a method for in-situ remediation of cadmium-polluted soil by using microbial nanomaterials. The method mainly comprises the following steps: step A, the preparation of composite bacteria: preparing the composite bacteria from desulfovibrio, desulfotomaculum, desulfobacter and desulfococcus at a mas ratio of 35-55 to10-15 to 30-60 to 7-10; step B, culturing of composite bacteria: performing anaerobic culture on the composite bacteria with a sulfuric acid reducing bacteria culture; step C, preparation of a suspending agent: using the composite bacteria as well as metabolites and nutrients thereof as microbial nanomaterials, adding water to prepare a microbial nanomaterial suspending agent having the bacteria number of (0.8-1.2)*107 per ml; and step D, remediation ofcadmium-polluted soil: plowing the cadmium-polluted soil, simultaneously pouring the suspending agent according to a pouring amount of 50-500 L per square meter of soil, repeatedly plowing and pouringafter 7-15 days, wherein the total number of plowing and pouring times is 2-4 times. The method has advantages of no secondary pollution, short remediation time, convenient operation and good remediation effect.

The invention discloses a loop-mediated isothermal amplification primer group of klebsiella pneumoniae, an LAMP nucleic acid strip detection kit using the primer group and a detection method of the kit. The loop-mediated isothermal amplification primer group of klebsiella pneumoniae, the LAMP nucleic acid strip detection kit using the primer group and the detection method of the kit has the advantages that nucleic acid amplification products are placed in a physically-closed environment by a nucleic acid strip for detection, through the nucleic acid detection strip, by adoption of a principle of chromatographical double-antibody sandwich method, fast detection of the nucleic acid amplification products is conducted, operation is simple (1-2 minutes), and result interpretation time is short (10-15 minutes); compared with traditional agarose gel electrophoresis, the method has the advantages that cross contamination of a laboratory and the false positive are prevented, operation time is short, toxic substances do not exist, and any instruments or equipment is needed.

The invention discloses a modified amylase-based nanometer helical oil phase-triggered quick-release material and a preparation method thereof. The preparation method comprises that amylase which can form a helical structure is modified, then is coated with hydrophobic vein center action drugs such as propofol and forms a helical brain localization quick-release system. The helical brain localization quick-release system has good dispersibility in a water phase, has uniform particle sizes, has a stable particle size for a long time, does not leak propofol easily, can be stored easily, and reduces propofol injection pain. After being triggered by the oil phase, the modified amylase-based nanometer helical oil phase-triggered quick-release material can fast release propofol and is conducive to fast release of propofol at the blood-brain barrier. The preparation method has simple processes, adopts the nontoxic raw materials, does not produce toxic substances in production, carries out disinfection easily and can be industrialized easily.

The invention discloses a fireproof flame-retardant material for a building. The material is prepared from, by weight, 5-7 parts of flame-retardant polyether, 18-20 parts of calcium carbonate, 6-8 parts of molybdenum trioxide, 10-12 parts of polycarbonate, 12-14 parts of pentaerythritol, 10-16 parts of silicon dioxide, 40-50 parts of epoxy resin, 16-18 parts of titanium dioxide, 8-10 parts of diethyl phthalate, 2-4 parts of stearic acid and 20-30 parts of gypsum. The material has the advantages that the fireproof performance is great, the flame-retardant capability is excellent, no toxic substances are generated, the environmental protection performance is remarkable, and no toxic substances are decomposed in a high-temperature process.

The invention discloses a heavy metal wastewater treatment agent which comprises the following raw materials in parts by weight: 13-15 parts of sodium carboxymethylcellulose, 11-13 parts of sodium cumenesulfonate, 17-19 parts of coal ash, 4-6 parts of carrageenan, 8-10 parts of ferrous sulfate, 9-11 parts of kieselguhr, 12-14 parts of polymeric phosphate-ferric chloride, 9-11 parts of calcium chloride, 2-4 parts of chitosan, 3-5 parts of koning trichoderma, 2-4 parts of koning trichoderma, 3-5 parts of sodium diacetate, 6-8 parts of peracetic acid, 11-13 parts of ethanol, 7-9 parts of calcium bentonite and 18-20 parts of water. The heavy metal wastewater treatment agent is capable of reducing contents of heavy metal ions in metal wastewater, is free of toxic substance, good in decoloring effect, relatively simple in production method and applicable to industrial production, and water treated with the agent is odorless and can be recycled.

The invention relates to animal fat and an extraction process thereof. The extraction process comprises the following steps: (1) feeding porcine adipose tissues and pigskin into a reaction kettle under the condition of stirring, raising the temperature to 55 to 60 DEG C, and maintaining the temperature for 3 to 5h; (2) raising the temperature to 85 to 90 DEG C, and maintaining the temperature for 1 to 3h; (3) adding pork enzymatic hydrolysis powder, raising the temperature to 97 to 103 DEG C, and maintaining the temperature for 1 to 3h; (4) reducing the temperature to 85 to 95 DEG C, adding water, and maintaining the temperature for 3 to 5h; (5) reducing the temperature to 55 to 60 DEG C, and performing separation to obtain an oily material; (6) adding accessories, uniformly stirring the accessories, raising the temperature to 60 to 65 DEG C, and stopping stirring and heating for 0.5 to 1h; (7) raising the temperature to 95 to 100 DEG C, and maintaining the temperature for 1 to 3h; (8) reducing the temperature to 60 to 65 DEG C, and adding essence base; (9) reducing the temperature to 40 to 45 DEG C, and performing uniform stirring and separation to obtain ointment; (10) grinding the ointment through a colloid mill, so as to obtain the animal fat. Little oily fume is generated in a low-temperature extraction process, harmful substances are not generated, and the extracted animal fat has the advantages of high uniformity, good taste, high nutritive value and good color.

The invention belongs to the technical field of preparation of traditional Chinese medicines, and discloses a traditional Chinese medicine for treating suppurative tonsillitis and a preparation methodthereof. The traditional Chinese medicine for treating suppurative tonsillitis comprises 30 g of gypsum, 10 g of raw rhubarb, 30 g of isatis leaves, 24 grams of baikal skullcap roots, 12 grams of moutan bark, 5 grams of catechu, 10 grams of lilyturf roots, 10-15 grams of dandelions, 10 grams of selfheal spike, and 5 grams of mint. The traditional Chinese medicine for treating suppurative tonsillitis has the effects of clearing away heat, detoxifying toxic materials, cooling blood, eliminating spots, purging fire, eliminating dampness, nourishing yin, promoting the secretion of saliva or bodyfluid, clearing lung, removing phlegm and promoting urination, and can effectively treat tonsillitis effectively, and has low recurrence rate and no toxic or side effects; a pure natural Chinese medicine prescription does not abuse antibiotics or cause drug resistance of patients, and has no effect on the patient's body; diuretic effect accelerates the patient's metabolism to expel metabolites; and the prescription does not contain valuable Chinese herbal medicines or toxic substances, has low cost and mild drug effect, and does not increase the patient's physical burden, or cause sequelae.

The invention discloses a transparent aluminum oxide ceramic wine cup. The transparent aluminum oxide ceramic wine cup comprises a pedal-shaped cup body and a round cup bottom, wherein the pedal-shaped cup body is made of transparent aluminum oxide ceramics. The transparent aluminum oxide ceramic wine cup is simple in structure and scientific in design, uses natural and pollution-free aluminum oxide as raw materials, is formed at the high temperature of 2000 DEG C in a sintering mode, has no toxic substance, looks like jade in color, and resists against strong acid and strong base, the Vickers hardness of the transparent aluminum oxide ceramic wine cup reaches 2000, and therefore the transparent aluminum oxide ceramic wine cup is never abraded.

The invention discloses an anti-flaming thermal-insulation environmentally friendly polymeric foaming material and a method for producing the material. The method comprises the following steps: preparing a urea resin foam adhesive by successively adding 37 % of formaldehyde, polyvinyl alcohol and glycerin in a reaction kettle and stirring to heat up and then adding urea, hexamethylene tetramine, stabilizer and thiourea, preparing a foaming agent by firstly adding water in a stirring tank, successively adding nekal and nonylphenol polyoxylethylene ether with stirring, heating up for completely dissolving, and then adding phosphoric acid, glycerin and sodium phosphate, uniformly stirring until completely dissolving, and discharging and packaging, and preparing a foamed product by taking the urea resin adhesive, urea and the foaming agent, mixing and stirring uniformly, putting in a foaming machine to foam, and carrying out foaming, extrusion molding, drying and packaging. The invention can be widely applied in thermal insulation of building facilities, thermal insulation of venue decoration, shock absorption, replacement of benzene plate flexible package without anti-flaming property, and the like.

The invention discloses a method for processing feedstuff such as distilled grains, etc. by mixed fermentation, and the strain is brevibacterium lactofermentus and candida utilis; the technique is that: strain liquid cultured by a third class seed is mixed and then inoculated in a mixed fermentation medium; the mixed seed liquid is inoculated in the mixed fermentation medium with 50 to 60 percentof humidity according to 1:10 of inoculum concentration; the obtained mixture is fermented by sectional fermentation at the temperature of 30 to 37 DEG C, and the obtained leavening is dried at the temperature of 40 to 60 DEG C, and packed so as to obtain a finished product; the invention adopts the sectional fermentation mode which is aerobic firstly and then is anaerobic, thus eliminating rape seed cakes or thioglucoside and gossypol in cottonseed crumb, increasing the total content of protein in the distilled grains, degrading the alcohol substances and decomposing non-starch polysaccharide substances such as cellulose, etc.; the content of the cellulose of the obtained feedstuff finished product is reduced from 25 to 11 percent, and the protein content is increased from 15 percent to 30 to 40 percent; the feeding effect of animals is good.

The invention provides a novel intelligent metal product. The novel intelligent metal product comprises a base layer, zinc layers, paint layers, an intelligent electronic chip and transparent protective painting layers, wherein the zinc layers are arranged at the two sides of the base layer; the paint layers are arranged at the two sides of each zinc layer; the transparent protective painting layers are arranged at the two sides of each paint layer; an intelligent electronic chip is arranged in the base layer. The novel intelligent metal product is reasonable in structure, simple in design and capable of strengthening the surface mechanical hardness of the metal product; the intelligent electronic chip is hidden inside the metal product, cannot be seen from the appearance, and is hidden; the transparent painting layers can be used for prolonging the service life and increasing the surface gloss.

The dust-free writing liquid for teaching black board consists of titanium white powder, glycerin, NP-10, sodium hexametaphosphate, dioctyl sebacate, peregal-15, polyglycol distearate, titanate coupler, ammonia water, PVA resin 17-88 and 17-99 (S) emulsion. The present invention has high chemical stability, no bad smell, fluent writing, easy drying, easy erasing out, and other advantages.