95results about How to "Improve stabilizer" patented technology

The invention provides a preparation method and application of conductive ink based on metal nanowire and graphene oxide. The graphene oxide is simultaneously used as a dispersing agent, a thickening agent and a stabilizing agent. The metal nanowire, the graphene oxide, the deionized water, the alcohol solvent, the dispersing agent, the surface active agent, the flatting agent and the de-foaming agent are uniformly mixed at a certain mass ratio, so as to acquire the conductive ink product. The acquired ink can be directly written or printed on various substrate materials so as to construct a conductive circuit with high conductivity, stability, flexibility and high adhesion; the constructed conductive circuit is dried for 3-10 minutes under room temperature, so that ultrahigh conductivity is achieved; furthermore, the graphene oxide is reduced and the metal nanowire is sintered according to the methods, such as, selecting sintering temperature at 50-200 DEG C or performing chemical reduction under room temperature or utilizing an xenon flashlight to sinter, so that the conductivity of the conductive circuit is further increased.

The invention relates to a nitrogen stabilizing agent and application of the nitrogen stabilizing agent. The nitrogen stabilizing agent is a clathrate compound formed by mechanically mixing urease inhibitors, nitrification inhibitors and beta-cyclodextrin or the beta-cyclodextrin and zeolite or the beta-cyclodextrin and attapulgite clay at normal temperature for 1-2 hours, and comprises the following raw materials by weight: 1-20 parts of the beta-cyclodextrin or the beta-cyclodextrin and the zeolite or the beta-cyclodextrin and the attapulgite clay, 1-10 parts of the urease inhibitor and 0.5-10 parts of the nitrification inhibitor, wherein the zeolite is 50-90% of total using amount of the beta-cyclodextrin and the zeolite, and the attapulgite clay is 50-90% of total using amount of the beta-cyclodextrin and the attapulgite clay. The nitrogen stabilizing agent and nitrogenous fertilizers are mixed to produce long-acting controlled release fertilizers for use, wherein the using amount of the nitrogen stabilizing agent is 0.5wt%-10wt% of nitrogen element total amount of the nitrogenous fertilizers. Nitrogen using ratio of the nitrogenous fertilizers is improved, and nitrogen loss is reduced.

The invention discloses a hexavalent chromium reducing agent and a preparation method thereof, a cement and a preparation method, which belong to the building material field, and the hexavalent chromium reducing agent and the cement solve the problems of poor stability of the water-soluble hexavalent chromium reducing agents and high water-soluble hexavalent chromium content in cement in prior art. A main technical scheme is characterized in that the raw materials of the hexavalent chromium reducing agent comprise tin salt, ferrous salt and a stabilizing agent; wherein, ferrous salt is metered by ferrous ions, tin salt is metered by stannum ions, the stabilizing agent is metered by weight part, the hexavalent chromium reducing agent comprises the following components: 5-12 weight part of stannum ions, 29-59 weight part of ferrous ions and 1-5 weight part of stabilizing agent. The raw materials of the hexavalent chromium reducing agent are mixed and ground to the hexavalent chromium reducing agent. The hexavalent chromium reducing agent, a cement clinker, gypsum and a mixing material are mixed and ground to prepare the cement with low percentage content of water-soluble hexavalent chromium ions. According to the invention, water-soluble hexavalent chromium ions in cement can be reduced to trivalent chromium, so that content of water-soluble hexavalent chromium ion in cement can be reduced.

The adhesive protecting film consists of low density polyethylene 28-34 wt%, linear low density polyethylene 25-26 wt%, EVA 10-38 wt%, polyethylene elastomer4-22 wt%, antistatic agglomerate 3-4 wt% and stabilizing assistant 2-6 wt%. The said materials are mixed, and the mixture is heated and flowed to form the adhesive protecting film, which is further corona treated and printed with ad and other content on it. The adhesive protecting film has high transparency, high elasticity, high flexibility, low density, high heat stability, application temperature of 0-75 deg.c and environment friendship.

The invention relates to the field of in-vitro diagnosis biochemical reagents, particularly a high-stability creatine kinase detection kit. The high-stability creatine kinase detection kit is composed of a reagent R1 and a reagent R2 which are mutually independent, wherein the reagent R1 is composed of a biological buffer solution, an enzyme protective agent, a reaction substrate, a complex, a surfactant, a preservative and an activator; the reagent R2 is composed of a biological buffer solution, a reaction substrate and a preservative; and the volume ratio of the reagent R1 to the reagent R2 is 4:1. After adding the enzyme protective agent into the detection kit, the enzyme protective agent can be adopted to protect the enzyme on the premise of enhancing the stability of the reagent. After adding the enzyme protective agent, the enzyme can keep stable in the water solution for a long time, and the activity of the enzyme is not influenced.

The invention relates to an alkaline pectinase preparation for cannabissalival degumming, wherein the components of the alkaline pectinase preparation comprise: an alkaline pectinase or an alkaline pectinase compound enzyme preparation, wherein the alkaline pectinase compound enzyme preparation is a mixture comprising an alkaline pectinase and one or a plurality of materials selected from pectinase, xylanase, mannanase, lipase and protease. According to the present invention, the alkaline pectinase preparation has characteristics of effective cannabissalival degumming and short degumming time, and the obtained fibers have characteristics of low gum residue, softness and less damage.

The invention discloses a preparation method for an environmentally-friendly alkali-free liquid accelerator. The preparation method is characterized in that acrylamide and unsaturated acid are subjected to copolymerization to prepare suspension stabilizer, then, the suspension stabilizer is used for preparing the synthesis of the alkali-free liquid accelerator, macromolecule copolymer is introduced to optimize the accelerator, the coherence of the liquid accelerator is improved, sediments can be effectively inhibited, mother liquor storage stability is greatly improved, and stability performance can be improved by one year or more. The environmentally-friendly alkali-free liquid accelerator prepared with the preparation method does not corrode the skin of a construction worker, the production environment is not polluted, and the environmentally-friendly alkali-free liquid accelerator belongs to an environmentally-friendly pollution-free product.

The invention provides a bamboo powder composite material, which is characterized by comprising the following components in part by weight: 30 to 60 parts of bamboo powder, 40 to 70 parts of melamine resin powder and 3 to 12 parts of hot melt adhesive powder, wherein the ratio of the bamboo powder to the hot melt adhesive powder is 10:1-2. The invention also provides a method for preparing the composite material, which comprises the following steps of: (1) preparing raw materials; (2) pretreating the raw materials; and (3) mixing the pretreated materials. The invention also provides a method for preparing a product of the composite material, which comprises the following steps of: (4) prefabricating a mold; (5) filling the composite material into the mold; (6) performing die casting on the composite material; (7) cooling the die-cast material; and (8) demolding the cooled material. The invention also provides application of the product in the field of manufacturing of sound boxes and the like. The bamboo powder composite material provided by the invention has high bamboo powder content and reasonable preparation process. The product can be particularly applied in specific fields and is in accordance with the concept of waste utilization, environmental friendliness, energy conservation and green production.

The invention discloses a production method for synthesizing acetic acid through carbonylation. The method comprises the following steps of: synthesizing acetic acid by performing carbonylation on methanol or a derivative of methanol serving as a raw material and liquid reaction composition at the reaction temperature of 170-210 DEG C and under the reaction pressure of 2.0-6.0Mpa; and continuously introducing reducing gas into a flash evaporator or a subsequent pipeline. The liquid reaction combination comprises a rhodium catalyst, a methyl iodide catalyst accelerator, methyl acetate, acetic acid, water, an alkali metal iodized salt, and a variable-valence metal salt serving as a stabilizer as well as promoter. Under the synergic actions of the variable-valence metal salt and the reducing gas, the rhodium catalyst can keep high stability under the condition of low water content, the adverse influence of the iodized salt on the stability of the rhodium catalyst can be lowered, the reaction activity under a low-water condition is increased, the contents of propionic acid serving as a side product and unsaturated compounds are reduced, and acetic acid can be produced at low energy consumption.

The present invention relates to antimicrobial compositions including an aromatic dialdehyde and a quaternary ammonium compound wherein the aromatic dialdehyde is orthophthalaldehyde, isophthalaldehyde, terephthalaldehyde, or combinations thereof, and the ratio of aromatic dialdehyde to quaternary ammonium compound is from about 10:1 to about 1:5. The invention also relates to methods of treating surfaces using the antimicrobial compositions of the invention.

The invention relates to the technical field of virus sample preservation, in particular to a virus preserving fluid capable of effectively preserving samples such as virus for a long time. The preserving fluid comprises the following components: disodium hydrogen phosphate dodecahydrate, potassium dihydrogen phosphate, magnesium sulfate heptahydrate, sodium chloride, potassium chloride, magnesiumchloride hexahydrate, calcium chloride, double distilled water, glucose, antibiotics, sodium bicarbonate, sodium hydroxide, a stabilizer, amino acid, phenol red, a biological buffering agent, a cryoprotectant and glycerol, wherein the components comprise, by mass, 0.06-3.04 g of disodium hydrogen phosphate dodecahydrate, 0.06-1.2 g of potassium dihydrogen phosphate, 0.20-2.0 g of magnesium sulfate heptahydrate, 150-160 g of sodium chloride, 0.70-8.0 g of potassium chloride, 0.30-2.0 g of magnesium chloride hexahydrate, and 0.14-2.8 g of calcium chloride, 20.0 g of glucose, 0.50-5.5 g of antibiotics, 0.35-0.60 g of sodium bicarbonate, 10 ml of sodium hydroxide, 0.10-1.0 g of stabilizer, 0.30-3.0 g of amino acid and 0.30-0.40 g of phenol red. The preserving fluid can protect virus protein shells from being decomposed easily; and the primitiveness of the virus sample is kept to the maximum extent, so that the preservation integrity of the virus is better, and the detection rate is higher.

The invention discloses a highly-durable alkali-free liquid quick-setting agent preparation method. According to the preparation method, a suspension stabilizer is prepared by copolymerizing acrylamide and an unsaturated acid, an alkali-free liquid quick-setting agent is synthesized by using the suspension stabilizer, and a polymer copolymer is introduced to optimize the quick-setting agent so asto improve the agglomeration property of the liquid setting agent, effectively inhibit the generation of the precipitate, substantially improve the mother liquor storage stability, and achieve the stability of more than one year; and the prepared highly-durable alkali-free liquid quick-setting agent does not contain sulfates, chlorine ions and alkalis so as to improve the durability of concrete.

The invention belongs to the technical field of pharmaceutical preparation and provides an isosorbide mononitrate freeze-dried power injection and a preparation method thereof. In the preparation process of the isosorbide mononitrate freeze-dried power injection of the invention, sorbic alcohol is used as a propping agent and the pH value of the solution of a middle body is adjusted to between 6.5 and 7.5 by acidic or alkaline buffer solution, so the hydrolysis of a main medicament is restrained and the stability of the main medicament is improved; and a pre-freezing initial temperature is controlled to be below 50 DEG C below zero, and the second sublimation temperature in a free-drying process is controlled to be between 5 and 15 DEG C, so the medicament content and the stability of related substances are improved. The stable isosorbide mononitrate freeze-dried power injection prepared by the method has reduced toxicity and good clinical effects.

The invention belongs to the field of medical materials and particularly relates to a preparation method of a medical adhesive. The main raw materials of the medical adhesive prepared by the preparation method are spider silk and gallic acid, wherein the spider silk has good adhesion property. The spider silk is rich in amino groups and can react with the gallic acid under the action of dicyclohexylcarbodiimide, and the amino-acid high polymer generated by the reaction has an adhesive effect; in addition, tea polyphenol is added during the reaction, so that the medical adhesive can achieve a specific antibacterial property, and the stability can also be improved. The medical adhesive provided by the invention has good biodegradability and biological compatibility, the raw materials are cheap and are easily obtained, and the reaction raw materials have no toxicity.

The present invention provides a pyruvic acid determination reagent box. The reagent box comprises a reagent R1 and a reagent R2. The reagent R1 comprises the following ingredients: reduced coenzyme I(NADH), a trihydroxymethyl aminomethane (Tris) buffer solution, a surface active agent, EDTA-Na2 and a preservative. The reagent R2 comprises the following ingredients: the trihydroxymethyl aminomethane (Tris) buffer solution, lactate dehydrogenase (LDH), the surface active agent, a stabilizer and the preservative. The present also provides a preparation method of the reagent box and applications. The reagent box is a high-stability, high-accuracy and good-repeatability liquid reagent box.

A stabilizer is disclosed for a three-wheel vehicle having a frame extending between a front portion and a rear portion. The front portion of the frame supports a front steering wheel and with the rear portion of the frame supports plural driving wheels. The stabilizer comprises a right and a left stabilizing wheel mounted on a right and a left side of the frame. The right and left stabilizing wheels are positioned above the supporting surface when the three-wheel vehicle moves in a straight direction on a supporting surface. The right and left stabilizing wheels engage the supporting surface when the vehicle is turned in a right and a left direction respectively for stabilizing the three-wheel vehicle while maintaining steering ability. Preferably, the stabilizer includes a right and a left director for directing the right and left stabilizing wheels in a forward direction when the right and left stabilizing wheels are positioned above the supporting surface. The invention is also incorporated into an accessory stabilizer unit adapted for mounting onto existing three-wheel vehicles.

The invention discloses a water quality composite purifier for aquaculture water. The water quality composite purifier is prepared by pelletizing or tableting after uniformly mixing the following rawmaterials in parts by weight: 10-15 parts of ferrate, 10-15 parts of potassium permanganate, 15-20 parts of potassium hydrogen persulfate complex salt, 20-25 parts of nano oxide, 30-40 parts of sodiumchloride, 10-15 parts of magnesium salt, 2-5 parts of sodium dodecyl benzene sulfonate, 2-3 parts of pregelatinized starch, and 1-3 parts of polyethylene glycol-6000. The purifier can be rapidly dispersed at the bottom of a pool. Through a superoxide and micelle cage complexing principle, heavy metal ions, organic matters and other harmful substances can be destroyed by oxidation and complexed ina cage type, and oxygen is provided to the water. The invention further provides a preparation method for the water quality composite purifier. The method is simple and easy to operate, and easy to large batch production.

The invention discloses a no-wash hand sanitizer capable of killing viruses. The hand sanitizer is prepared from components in parts by weight as follows: 1-2 parts of hydrogen peroxide, 700-900 partsof absolute ethyl alcohol, 20-50 parts of propylene glycol, 10-20 parts of alkyl glycoside, 5-15 parts of cocamidopropyl betaine, 10-20 parts of glycerin, 1-10 parts of citric acid and 100-300 partsof purified water. The prepared no-wash hand sanitizer capable of killing viruses contains sanitizing ingredients, can kill enteropathogenic bacteria, pyogenic cocci, pathogenic saccharomyces cerevisiae and common hospital infection bacteria and is compounded from two or more main sanitizing ingredients, and a proper stabilizer and surfactant are added, so that the product is high in stability andsterilization effectiveness and good in sterilization effect.

The invention provides a homocysteine detecting kit and a using method thereof, relates to the field of biochemical detection, and aims to provide a homocysteine detecting kit which is high in stability, high in accuracy and high in precision and a using method of the homocysteine detecting kit. The homocysteine detecting kit comprises a reagent 1 and a reagent 2, wherein the reagent 1 comprises a capso buffer solution, lactic dehydrogenase (LDH), L-serine, reduced coenzyme Thio-NADH, tris((2-carboxyethyl)phosphine, mercaptoethanol, an alkylphenol polyoxyethylene series, EDTA, polyethylene glycol 300, ascorbic acid oxidase, a composite stabilizer, and a proclin series preservative; and the reagent 2 comprises a capso buffer solution, cystathionine-beta-synthase, methionine synthase, cystathionine-beta-lyase, methionine-gamma lyase, a surfactant and sodium dodecylbenzene sulfonate. By the various added mixed enzymes and methionine-gamma lyases, the accuracy of the kit on detection of homocysteine can be improved.

The invention discloses an anti-aging composite polypropylene material. The anti-aging composite polypropylene material comprises, by weight, 80 parts of polypropylene materials, 20-25 parts of intensifying materials, 3-6 parts of stabilizers, 5-8 parts of antioxidants, 2-4 parts of toughening agents and 1-3 parts of coupling agents. The anti-aging composite polypropylene material has the advantages that by adding the intensifying materials in the polypropylene materials, a mechanical structure and physical and chemical properties of polypropylene are changed, by interaction and synergy of the stabilizers, the antioxidants, the toughening agents and the coupling agents, ageing resistance, stability, antibacterial property and toughness of the polypropylene are enhanced.

The invention provides a low-temperature phosphating solution containing carboxymethyl cellulose sodium. The low-temperature phosphating solution is a mixed solution prepared by the following components by weight: 420 to 430g of 80% of phosphoric acid, 120 to 125g of zinc oxide, 5 to 7g of ammonium molybdate, 12 to 13g of citric acid, 100 to 150g of zinc nitrate, 4 to 6g of acetic acid, 1 to 2g of carboxymethyl cellulose sodium, 2.0 to 2.5g of chromic acid and water for the rest. The low-temperature phosphating solution is an energy-saving phosphating solution with excellent performance and has the advantages of stable performance, high film forming speed, strong paint film bonding force and good corrosion resistance while in use. The low-temperature phosphating solution is suitable for coating pretreatment of various types of steel iron products such as manufacturing of automobiles, home appliances, agricultural machines and the like so as to enhance the corrosion resistance and increasing the paint film bonding force of the steel iron products in a spraying or soaking way.

The invention discloses modified asphalt and a preparation method thereof. The modified asphalt includes, by mass, 100-200 parts of asphalt, 30-50 parts of rubber powder, 50-80 parts of artificial sand, 30-50 parts of mica powder, 20-40 parts of fiber powder, 5-10 parts of a silane coupling agent, 2-6 parts of a stabilizing agent, 3-9 parts of a high temperature resistant additive, and 10-20 partsof an ultraviolet absorber. The preparation method includes the steps of: heating the asphalt to 175-185 DEG C, adding the rubber powder, artificial sand, mica powder, fiber powder and silane coupling agent, stirring the mixture for 10-20 min; finally adding the stabilizing agent, high temperature resistant additive and ultraviolet absorber, and stirring the mixture for 10-20 min at 175-185 DEG Cto obtain the product. The modified asphalt has excellent high temperature resistance and long service life.

The invention belongs to the field of in-vitro detection kits, and particularly relates to a liquid prothrombin time determination kit and a preparation method thereof. The liquid prothrombin time determination kit comprises thromboplastin, a stabilizer, a surfactant, salt ions and a buffer solution. The kit has the beneficial effects that the sensitivity of a reagent is controllable through combined use of thromboplastin from multiple sources, and the problem of inter-batch difference is solved; the surfactant is added, so that the uniformity of the reagent is improved, and the accuracy of the reagent is further improved; by optimizing the formulas of the protective agent and the preservative, the stability of the reagent is improved, so that a reagent can be prepared into a liquid reagent without freeze-drying, the reagent preparation and production process is simplified, the reagent can be used after being produced and opened, and the use and operation process of a terminal customeris simplified.

The invention discloses antibacterial plastic and a preparation method thereof, and belongs to the technical field of plastic. The antibacterial plastic is prepared from the following raw materials in parts by weight: 30-40 parts of a plastic substrate, 5-10 parts of carbon nanotube fibers, 6-14 parts of montmorillonite, 3-10 parts of a plasticizer, 0.5-3 parts of a coupling agent, 2-6 parts of a dispersing agent, 1-4 parts of a nucleating agent, 3-7 parts of a stabilizer and 3-10 parts of an antibacterial agent. By adding the novel antibacterial agent and the modified nano titanium dioxide, not only are original excellent thermal stability and mechanical properties of the antibacterial plastic maintained, but also the defects that traditional plastic is poor in antibacterial property and prone to aging are overcome, and the antibacterial plastic has the advantages of being easy to operate, free of pollution, low in cost and the like.

The invention discloses a kit for determination of alpha-hydroxybutyrate dehydrogenase and a preparation method thereof, wherein the kit includes double-liquid components of a reagent R1 and a reagent R2 which are independent with each other and includes the components and the corresponding content: the reagent R1 including 1-350 mmol / L of a buffer liquid, 0.01-10 mmol / L of alpha-ketone butyric acid, 0.1-2 g / L of disodium ethylenediamine tetraacetate, 0.01-0.40 g / L of a stabilizing agent, and a solvent being purified water; and the reagent R2 including 1-350 mmol / L of a buffer liquid, 0.1-4.0 mmol / L of NADH, 0.01-0.40 g / L of a stabilizer, and a solvent being purified water. The preparation method includes the steps: according to the following component content, preparing the reagents; mixing a to-be-tested sample with the reagent R1 and the reagent R2, and carrying out full reaction; determining the absorbance difference value after the reaction with a fully automatic biochemical analyzer; and calculating the concentration of the alpha-hydroxybutyrate dehydrogenase in the sample according to the absorbance change value. The kit has the advantages of high accuracy, good precision and the like.

The invention discloses a boracic polysilicic acid containing aluminum sulfate and zinc sulfate and chitosan composite flocculant which is prepared from aluminum sulfate octadecahydrate, heptahydrate,sodium metasilicate nonahydrate, borax, chitosan and sulfuric acid by hybrid reaction. The molar ratio of aluminum to silicon is 0.3-0.5, the molar ratio of zinc to silicon is 0.2-0.4, the molar ratio of boron to silicon is 0.1-0.2, and the mass ratio of the chitosan to silicon is 0.04-0.15. The invention further discloses a preparation method of the boracic polysilicic acid containing aluminum sulfate and zinc sulfate and chitosan composite flocculant. The preparation method includes the steps: first, preparing polysilicic acid solution; second, preparing boracic polysilicic acid containingaluminum sulfate flocculant solution; third, preparing chitosan solution; fourth, preparing a boracic polysilicic acid containing aluminum sulfate and zinc sulfate and chitosan composite flocculant crude product; fifth, preparing the finished boracic polysilicic acid containing aluminum sulfate and zinc sulfate and chitosan composite flocculant. The composite flocculant prepared by the preparationmethod is low in cost, stable in performance, good in storage performance, convenient to use and more environmentally friendly as flocculation and algae removal are more efficient and thorough, and fewer metal ions remain in water.

The invention discloses a stabilizer for alkaline etching regenerated electrolytic copper and an electrolyte solution using the stabilizer. The stabilizer for the alkaline etching regenerated electrolytic copper contains, by mass, 0.002-0.05 part of a complexing agent, 0.001-0.02 part of a brightener, 0.001-0.03 part of a leveling agent and 0.001-0.01 part of a surface treatment agent. By means ofthe technical scheme, the copper phase extracted by electrolysis can be improved.

The invention provides an inorganic coating and a preparation method thereof. The invention aims to solve the problems of poor stability and influence on product storage and use of conventional inorganic coatings. According to the invention, an inorganic emulsion is adopted in the inorganic coating, and the inorganic coating is completely different from compound inorganic coatings on the market. Inorganic components and organic components in inorganic coatings on the market exist independently, the inorganic components easily react with multivalent metal ions in water or other materials to form insoluble substances, and a stabilizer needs to be added; however, inorganic components in the inorganic coating of the invention are wrapped in e organic components in a core-shell mode, so the inorganic and organic components are more uniformly distributed, a film-forming property is more excellent, the possibility of generating insoluble silicate is avoided, an additional stabilizer is not needed, product stability is higher, and the inorganic coating has excellent freeze-thaw stability, high scrub resistance and better applicability to paints, and can be directly added in use.