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

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 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 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 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 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 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 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 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.

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.