211results about How to "The preparation method is mature" patented technology

The invention discloses an inorganic fireproof heat-insulating material, which comprises the following components by weight: 0.5-30 parts of reinforced fibers; 40-65 parts of lightweight aggregate; 2-15 parts of bentonite; 12-35 parts of an adhesive; 5-20 parts of an inorganic gel material; 2-10 parts of an interface agent; 0-10 parts of expanded polyphenyl particles; and 200-260 parts of water. Specifically, the expanded polyphenyl particles play a buffering role in a stirring process, so that the lightweight aggregate can avoid breakage. The interface agent can enhance the compatibility of various raw materials and has a foaming effect. The adhesive and the inorganic gel material retain the produced foam. The reinforced fibers endow the material with certain elasticity and good mechanical strength. The preparation method of the material provided in the invention is simple and convenient, and is easy to operate and to realize industrial production. The material disclosed in the invention has the characteristics of high temperature resistance, good heat insulation performance, and small unit weight, not only can be used as a heat insulation sheet material and a heat insulation slurry, and also can be used as a fireproof door core, a fireproof plugging material and other inorganic refractory materials.

The invention discloses organic amine modified ammonium polyphosphate. Organic amine modified ammonium polyphosphate is prepared through an ionic reaction between organic amine and ammonium polyphosphate. The structure formula is shown in the description, wherein the R of the formula is a straight chain alkyl or branch chain alkyl with a carbon number between 2 and 6, and the n is not smaller than 1. The invention also discloses a preparation method and applications of organic amine modified ammonium polyphosphate. The organic amine modified ammonium polyphosphate is obtained through modifying ammonium polyphosphate by organic amine in water and alcohol solution, is capable of being used alone as the expanding flame-retardant agent, is harmless to human bodies, can obtain excellent flame-retardant effects by mixing with polypropylene, polyethylene and epoxy resin, and the preparation process is pollution free.

The invention specifically relates to a meal-replacing powder and a preparation method thereof, belonging to the technical field of health food. The meal-replacing powder comprises the following raw materials by weight: oat, red beans, black sesame, walnuts, red dates, Chinese yam, purple sweet potatoes, wolfberry, coix seeds, apples, bananas, soybeans, carrots, peanuts, corn and whole milk powder. According to the meal-replacing powder and the preparation method thereof in the invention, no food additive is added, and the meal-replacing powder has balanced nutrients and mellow taste and is convenient to eat; the raw materials of the meal-replacing powder are common edible raw materials and perform unexpected health care effect after scientific proportioning; the preparation method is simple and mature in process and uses natural and green raw materials; and the prepared meal-replacing powder is free of toxic and side effect, applicable to a wide range of populations and good in eating effect.

The invention discloses a phosphorus-containing halogen-free flame-retardant polylactic acid, which is obtained by leading phosphorus element with flame retardant function into a molecular backbone through a chain extending method or a coupling method. The phosphorus content of the polylactic acid is between 0.1 and 5 weight percent, and the vertical combustion level of the polylactic acid is V-0. The invention also discloses a method for preparing the halogen-free flame-retardant polylactic acid, and a flame retardant material formed by blending the phosphorus-containing halogen-free flame-retardant polylactic acid with common industrial polylactic acid. The phosphorus-containing flame-retardant polylactic acid provided by the invention leads flame-retardant element into the molecular backbone of the polylactic acid through chain extending or coupling reaction, thereby improving the molecular weight of the polylactic acid, endowing a polylactic acid body and the blended flame retardant material with good flame retardant property and overcoming the disadvantages of poor compatibility, precipitation easiness and the like caused by the application of additive flame retardant. In addition, as no halogen component is contained, no halogen-containing gas can be released during application, thereby particularly preventing the release of harmful gas from polluting environment and harming human bodies during combustion.

The invention discloses droplet-resistant flame-retardant polyester. The flame-retardant polyester is prepared by random copolymerization of a branched monomer, terephthalic acid or dimethyl terephthalate, ethylene glycol and flame-retardant monomer, wherein the branched monomer is an aliphatic compound or aromatic compound having three or more functional groups; and the flame-retardant monomers adopts any of the following structures. The invention also discloses a method for preparing the droplet-resistant flame-retardant polyester, a nanometer compound material containing the droplet-resistant flame-retardant polyester and a method for preparing the nanometer compound material. Because the droplet-resistant flame-retardant polyester provided by the invention simultaneously contains the branched monomer and the fire retardant having the droplet-resistant effect, the melt viscosity of the droplet-resistant flame-retardant polyester at the high temperature is greatly improved, the sensitivity of the droplet-resistant flame-retardant polyester to temperature is lowered, and the droplet-resistant effect is good; because of the nanometer effect and the blocking effect, the nanometer compound material shows better droplet-resistant effect; and the polyester and the nanometer compound material can be directly used as raw materials for preparing fibers, engineering plastics, films and the like.

The invention discloses a three-dimensional sub-wavelength metal cavity structure spectrum multi-tape light perfect absorption plasmon sensor as well as a preparation method and application thereof. The sensor is composed of a flat seamless metal film, a two-dimensional metal slit micro-cavity array and a medium film in sequence from bottom to top, wherein the thickness of the metal film layer is more than 100 nanometers so that light transmission is inhibited; and the size and shape of a cross-shaped metal block and the period of the two-dimensional metal slit micro-cavity array composed of the cross-shaped metal block can be adjusted. The preparation process is simple and developed and the performances of the sensor present multi-spectrum tape narrow line-width responses; meanwhile, the sensor has high-response sensitivity for spectrum frequency shift and spectrum intensity change, and good tunability of space selective sensing detection and a detection spectrum range; and the geometric dimension of the device structure is in a sub-wavelength range and devices are easy to integrate.

The invention belongs to the technical field of genetic engineering and medicine and in particular relates to an affinity peptide L8 of a PD-1 (programmed death-1) protein extracellular domain and an application thereof. The amino acid sequence of the affinity peptide L8 is Ser-Leu-Pro-Ser-Thr-Thr-Thr-Met-Arg-Leu-Thr-Ser, namely S-L-P-S-T-T-T-M-R-L-T-S, and the molecular weight of the affinity peptide L8 is 1293.7. The affinity peptide L8 is applied to preparation of antitumor related drugs and the tumor is colon cancer or melanoma. The affinity peptide L8 is synthesized by adopting a Fomc solid-phase peptide synthesis method. The obtained affinity peptide L8 of the PD-1 (programmed death-1) protein extracellular domain has clear effects and targets, has obvious inhibitory effects on tumors, especially on the colon cancer or melanoma, does not have obvious side effects and can obviously lengthen the lifetime of experimental animals; therefore the affinity peptide L8 has better medical application prospects.

The invention discloses a preparation method of localized surface plasmon resonance (LSPR) microfluidic chip. The preparation method includes preparation of microfluidic chip, and chip modification. The preparation method has the advantages of easily-available materials, low cost, repeatable use, simple modification method, good reproducibility and good stability, can be directly used for rapid detection of various biological samples, and has potential wide application in life sciences and medical clinical detection.

The present invention relates to the technical field of health-care food and particularly relates to nutrient powder suitable for consumption of patients with high blood lipids, high blood pressure and high blood sugar and a preparation method thereof. The nutrient powder comprises the following raw material components in parts by weight: oat, black beans, buckwheat, black sesame seeds, Chinese yams, flaxseeds, radix puerariae, millet, red dates, brown rice, wheat germ, purple sweet potatoes, apples, poria cocos, semen ginkgo, apricot kernels, corn, xylitol, whole milk powder and inulin. Compared with the prior art, the provided nutrient powder is free of any food additives, balanced in nutrition, mellow in taste and convenient in consumption. Although the contained various raw material components are common food raw materials, after a scientific and reasonable matching, the materials can play unexpected health-care effects. A long-term drinking of the nutrient powder can help stabilize blood pressure, reduce low-density lipoprotein and cholesterol, improve hyperlipidemia symptoms, control the rising frequency of blood sugar, is health preserving excellent products having effects of lowering high blood lipids, high blood pressure and high blood sugar and suitable for long-term brewing, and can be selected by consumers according to own situations.

The invention discloses a three-dimensional graphitized carbon material rich in a continuous mesoporous structure and a preparation method thereof. The preparation method comprises the following preparation steps: adding water to a metal ion salt which can catalyze low temperature graphitization of carbon to dissolve, adding pretreated ion exchange resin, stirring, and exchanging; after the exchange is finished, washing with deionized water and drying; weighing a certain amount of the resin after drying, adding a certain amount of a calcium hydroxide powder, and evenly stirring and mixing; putting the obtained product in a high-temperature furnace in an inert gas atmosphere, and carrying out heat treatment; and pickling the heat-treatment product, filtering, and drying to obtain the carbon material. The preparation method has the advantages of simple process, safety, short production cycle, low cost and easy realization of scale production, has a part of raw materials capable of being recycled, and solves the problems that a traditional carbon material has small mesoporous volume and single pore structure.

The invention discloses a reaction type phosphorus-nitrogen fire retardant which has the structural general formula shown in the specification, wherein in the formula (1), R1 is hydrogen atom or phenyl; R2 is oxygen atom or sulphur atom; R3 is nitrogen-containing compounds; and the compounds have one primary amine group and two hydroxyls, the primary amine group and the isothiocyano (-NCS) are reacted with each other, and the two hydroxyls can be used for the follow-up reactive group with a polymer monomer. The invention further discloses a preparation method of the reaction type phosphorus-nitrogen fire retardant. The fire retardant provided by the invention not only can integrate an acid source, a carbon source and a gas source, but also has the two hydroxyls which are very high in reactivity, so that the structure of the fire retardant can be very easily embedded into a polymer chain due to the chemical bonding, the problems caused by the initiator or the optical radiation means adopted in the prior art can be avoided, the effects of the expansion type fire retardant can be well played, and the anti-flaming effect of the high molecular material can be greatly improved. The preparation method is simple and mature, easy in operation, low in reaction temperature, and energy-saving.

The invention relates to a light-transparent heat insulating film, its preparation method and application. The light-transparent heat insulating film comprises resin matrix and modified SiO2 hollow microsphere particles uniformly dispersed in the resin matrix, wherein the modified SiO2 hollow microsphere particles are water-soluble positively charged submicron SiO2 hollow microsphere particles, and the resin matrix is waterborne polyurethane latex or acrylic resin emulsion. The invention further provides the preparation method and application of the light-transparent heat insulating film. According to the invention, the advantages of simple preparation process, easy obtainment of matrix material, low dose of additives, low cost, and no volatile organics are achieved; the green, environmental protection, and energy-saving requirements are satisfied; the obtained product has low thermal conductivity, high visible light transmissivity, and low ultraviolet light transmissivity, and can beused as ideal glass coating for building, automobile, aerospace and other industries with the effect of heat insulation and light transmittance.

The invention discloses carboxyl-terminated phosphorus-containing copolyester which is formed by randomly connecting and combining structural units shown as I, II and III according to carboxyl and hydroxyl functional groups, and the Mw of the carboxyl-terminated phosphorus-containing copolyester is 1.1*10<3>-1.3*10<4> g.mol<-1>. The invention further discloses a preparation method of the carboxyl-terminated phosphorus-containing copolyester, a halogen-free flame retardant biology-based pressure sensitive adhesive composed of the carboxyl-terminated phosphorus-containing copolyester and application. The copolyester is biology-based phosphorus-containing copolyester, the halogen-free flame retardant pressure sensitive adhesive formed by the copolyester and renewable resource epoxidized plant oil not only maintains the basic characteristics and good adhesive strength of a biology base, but also achieves the excellent halogen-free flame retardant properties, and the blank of biology-based halogen-free flame retardant pressure sensitive adhesive products is filled up; in addition, preparation is easy and mature, solvent is not used, the cost is low, pollution to the environment is little, and application and popularization are convenient.

The invention provides a [12] aneN3 cationic lipid containing a targeted group and a fluorescent group and a transgenic vector containing the same. The invention also discloses preparation methods of the cationic lipid and the transgenic vector. The cationic lipid provided by the invention contains the targeted group cholic acid and the fluorescent group naphthalimide simultaneously; the transgenic vector formed by the cationic lipid has lower cytotoxicity, has a certain targeting property on hepatoma cells, not only can monitor intracellular transport and release of vector/DNA complexes in a same cell but also has a certain selectivity on the hepatoma cells to promote the development of gene therapy, and also has higher transfection efficiency; the preparation methods of the cationic lipid and the transgenic vector are simple, mature, and easy to control.

The invention relates to a method for recycling waste dust removal filter material. The method takes the industrial waste dust removal filter material as precursor, and comprises the steps of preparing filter material-based activated carbon fiber (ACF) with larger specific surface area by carbonization and activation, loading a manganese oxide catalyst onto the filter material-based ACF to enable the filter material-based ACF to be applied to the field of low-temperature denitration catalysis, and combining the filter material-based ACF with polyphenylene sulfite (PPS) dust removal filter material. The prepared MnOx/ACF@PPS filter material not only has a dust removal function, but also has a certain denitration effect; the mechanical property of the obtained composite filter material is hardly influenced. The method provides a good thought for solving the problem of industrial waste material treatment, so that the resource can be recycled.

The invention discloses a paper additive and a preparation method. During preparation, the paper additive comprises raw materials in parts by weight as follows: 0.6-6 parts of an antibacterial agent, namely, polyhexamethylene guanidine hydrochloride, 1-4 parts of carboxymethyl chitosan, 0.4-2 parts of a condensing agent, 0.1-0.5 parts of an activating agent and 0.05-0.2 parts of a cross-linking agent. The preparation method comprises steps as follows: the carboxymethyl chitosan is dissolved in water, then the pH value is adjusted to range from 5 to 5.5 with hydrochloric acid, the condensing agent and the activating agent are added to the mixture for activation, the antibacterial agent, namely, the polyhexamethylene guanidine hydrochloride, is added for a reaction, an obtained reaction liquid is subjected to suction-filtration, washing, drying and crushing and then evenly mixed with the cross-linking agent, namely, N,N-dimethyl bisacrylamide, an obtained mixture is dissolved in deionized water, and the paper additive is obtained. The paper additive has the advantages that the paper additive is broad in spectrum, high in efficiency, low in toxicity, free of drug resistance, high in antibacterial endurance and the like in the antibacterial aspect and has the advantages that the paper additive is capable of significantly enhancing the paper strength, non-toxic and harmless to human bodies and the like in the enhancing aspect.

The invention provides an array substrate, a preparation method and an application thereof and a performance improvement method. The array substrate comprises a substrate, a shielding layer, a thin film transistor and a compensation layer, wherein the shielding layer is arranged on one surface of the substrate; the thin film transistor is arranged on the substrate and covers the shielding layer; and the compensation layer is arranged on one side, far from the substrate, of the thin film transistor and used for forming a second electric field in an active layer of the thin film transistor. Therefore, by changing the electric field distribution in the active layer of the thin film transistor, influence of the first electric field to the characteristic of the thin film transistor can be compensated, so that a technical effect of improving or eliminating an abnormal phenomenon of output characteristic curved saturation region warping can be realized, and current normal output can be ensured; and meanwhile, the adverse influence caused by change of a threshold voltage of the thin film transistor due to the first electric field can be improved and compensated, the problem of threshold voltage drifting and the like can be solved, and the thin film transistor can recover to the working state when the active layer is not influenced by the first electric field, and even a higher level.

The invention discloses a demulsification method of an oil-in-water type crude oil emulsion. The method employs oxidized graphene as de-emulsifier to carry out dehydration treatment to the oil-in-water type crude oil emulsion at the room temperature. The de-oiling rate of the oil-in-water emulsion is more than 96%. The demulsification method of the invention can be applied to the dehydration treatment of oil-water emulsion with high water content in the petroleum industry.