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 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 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 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 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 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.