51results about How to "Overcoming volatile" patented technology

The invention discloses a low eutectic solvent for aromatic hydrocarbon separation. The low eutectic solvent is obtained by mixing hydrogen bond receptors and hydrogen bond donors according to a certain ratio (the molar ratio of 1: 1 to 1:10), and stirring till being in a uniform transparent state at 70-100 DEG C. The low eutectic solvent is low in toxicity, environment-friendly and high in efficiency, and can be applied to the process of separating aromatic hydrocarbons from non-aromatic hydrocarbons in coal tar and petroleum oil.

The invention relates to combustion mosquito coil incense and a preparation method thereof. The combustion mosquito coil incense comprises the following components in proportion by weight: 30-60% of carbon powder, 30-60% of vegetable powder, 0.1-0.5% of starch, 0.02-0.5% of pyrethroid and 5-10% of natural wild chrysanthemum flower. The preparation method of the combustion mosquito coil incense comprises the following steps: crushing and fully mixing the carbon powder, the vegetable powder and the natural wild chrysanthemum flower to form a first mixture; adding the starch to the first mixture, and evenly stirring to form a second mixture; extruding the second mixture into slices, and stamping the slices into a spiral billet shape to form spiral billets; drying the spiral billets to obtain dried billets; and attaching the pyrethroid to the dried billets to obtain the combustion mosquito coil incense. The combustion mosquito coil incense of the invention has the advantages of stable combustion, small smoke quantity, fragrant odor and good mosquito repelling effect.

The invention discloses a seafood fresh keeping method which belongs to seafood storage and fresh keeping technical field. The method comprises the following steps: (1) sorting and selecting raw materials; (2) treating with chlorine dioxide; (3) preparing and treating slow-release chlorine dioxide; (4) preparing and treating temperature-feedback-release chlorine dioxide; (5) weighing, packaging, storing and transporting. By the method, chlorine dioxide can continuously, stably and safely kill microorganisms in seafood, seafood fresh keeping quality can be improved and fresh keeping time can be prolonged. The method can be widely used in seafood catching and fresh keeping industries.

The invention provides a breast protection membrane for preventing dairy cow mastitis and a preparing process of the breast protection membrane. The breast protection membrane is prepared from membrane forming agents, thickening agents, povidone iodine, a wetting agent, skin moisturizing agents and purified water according to a composition proportion being (0.3 to 1):(0.3 to 1):(0.5 to 5):(0.05 to 0.15):(6 to 15):(92.85 to 77.85), wherein the membrane forming agents select hydroxyethyl cellulose, hypromellose, methylcellulose, polyvidone and sodium carboxymethyl cellulose; the thickening agents select xanthan gum, guar gum and carrageenin; the wetting agent selects docusate sodium; and the skin moisturizing agents select glycerol and propylene glycol. The breast protection membrane has the characteristics that the formula has small irritation on the breasts of dairy cows; the action is mild; the bacteriostatic effect is high; the dripping phenomenon on the nipples of the dairy cows seldom occurs; and the cost is low, and the like. The process operation is simple; raw materials can be easily acquired; and the breast protection membrane is suitable for large-scale production.

The invention discloses a pathological specimen processing method and belongs to the field of specimen processing technology. According to the processing method, sampled pathological tissues successively undergo fixation, dehydration, transparency, wax impregnation, embedding, slicing, staining and mounting so as to obtain a pathological specimen. The fixation is to fix the pathological tissues by the use of a fixative for 4-15 h. The fixative is composed of atractylol, ethoxylated acetylenediol, chlorogenic acid, polyvinylpyrrolidone, sodium chloride, ethyl acetate and pure water. The mounting is to carry out mounting on the stained pathological tissues by the use of a mixture of polyacrylamide, polyvinylpyrrolidone and xylene. According to the invention, toxicity of reagents used in the invention is obviously reduced, the fixation effect is good, degradation and transparency degree are easy to control. Then, the tissues are not easy to deform, embrittle or harden, and mounting is complete and staining is remarkable.

The invention relates to alkoxy end capping linear polysiloxane coupling agent and a synthetic method thereof, including cationic ring-opening reaction of organic silicon epoxy with trimethylchlorosilane or silicon tetrachloride or thionyl chloride to obtain monochloro-end capping linear polysiloxane, Alpha-chloro-Omega-trichloro linear polysiloxane, Alpha, Omega-dichloro linear polysiloxane respectively; then alkoxylated reaction of saturated solution of fatty alcohol sodium-alcohol with the prepared chloro-end capping linear polysiloxane to obtain degree of polymerization controllable alkoxy end capping linear polysiloxane. The polysiloxane has higher reaction activity and can be used in surface treatment and modification of various inorganic materials and organic polymer materials, and has advantages of one agent more performances, combination, synergistic action, low cost, high temperature resistance, non-volatilization and good durability, thus obtaining various modified inorganic fillers and organic polymer materials with excellent performance.

The invention discloses a water-soluble fluorine-containing macromolecule photoinitiator, and a preparation method and application thereof. Fluorine-containing micromolecules and a water-soluble photoinitiator are subjected to copolymerization reaction to obtain the water-soluble fluorine-containing macromolecule photoinitiator. The water-soluble fluorine-containing macromolecule photoinitiator overcomes the defect of high volatility in the traditional micromolecule photoinitiator especially in the infrared drying process of water-based paint and the defect of high tendency to yellowing; the water system has certain solubility, and thus, can initiate photopolymerization of the water-soluble system, thereby greatly reducing the hazards on the environment and human body; the fluorine-containing macromolecule photoinitiator is endowed with certain migration capacity due to the surface tension and surface energy of the fluorine atoms, and thus, can spontaneously migrate to the external surface of the system when being in the water system so as to finally form concentration gradient distribution in the water-based system, thereby initiating gradient polymerization; and part of the water-soluble fluorine-containing macromolecule photoinitiator migrating to the surface can form an oxygen isolation layer, and thus, has certain anti-oxygen and polymerization inhibition effects.

The invention discloses a water-based permeable self-healing high polymer modified asphalt waterproof coating with a hydrophobic surface as well as a preparation method and application thereof. The coating is prepared from emulsified asphalt, acrylate emulsion, an alkali swelling thickener, a polyurethane thickener, a dispersing agent, a multifunctional additive, a defoaming agent, a sterilizing agent, ground calcium carbonate powder, bentonite, an organic silicon water repellent, sodium silicate, a photoinitiator, a cross-linking agent and water. The coating disclosed by the invention mainlyhas rapid curing performance, self-healing performance, ultrahigh bonding strength and elongation rate and excellent water resistance and high and low temperature resistance, is suitable for various environments, can achieve a good waterproof effect on a building structure in any environment, is particularly suitable for waterproof engineering of various extremely complex environments, projects ofsome complex scenes and some special regions and projects, fills the blank of the material in severe cold regions, and is wide in application range.

The invention discloses a preparation method of a polymer dispersed liquid crystal (PDLC) membrane material and the prepared PDLC membrane. The preparation method comprises the steps that polymerizable monomers and a liquid crystal material are mixed according to the mass ratio of (3:7) to (7:3), and an ultraviolet initiating agent is added, wherein the ultraviolet initiating agent accounts for 3-5% of the total mass of the polymerizable monomers, and the adopted liquid crystal material is matched with the selected polymerizable monomers in refractive index; and a mixture is poured into a liquid crystal cell and irradiated under ultraviolet light, and thus the PDLC membrane is prepared. The adopted polymerizable monomers are not prone to volatizing, low in toxicity and small in irritation;a system is high in stability and easy to preserve; through a polymerization crosslinking reaction of ultraviolet light and acrylate and mercaptan monomers, a formed polymer matrix has a unique composite structure, namely, the composite structure is provided with the dense surface and a hole-type internal structure with attached microspheres, the polymer matrix is good in toughness, fast in deformation recovery and good in stability, the electro-optical performance of the PDLC membrane is greatly improved, and thus the PDLC membrane has the lower driving voltage, the high response speed and the high contrast.

The invention provides a method for integrated preparing of a foam metal phase change temperature control assembly and aims at providing a technology method for solving the problem that in a phase change temperature control assembly, a gap exists between foam metal and a base body material, and the heat response rate is influenced. The method is achieved through the following technical scheme that according to the boundary dimension of a packaging container, a packaging container clamp is prepared; a cavity used for welding the foam metal is machined in the packaging container in advance, a layer of welding piece is laid on the inner side welding face of the cavity of the packaging container, and the contact interface of the foam metal is subjected to tin lining; the foam metal is compressed to the cavity size; the packaging container, the foam metal and the clamp are assembled into a whole and heated, and after cooling, a formed phase change temperature control assembly blank is taken out of the clamp of the packaging container; in the constant-temperature environment, a liquid phase change material is poured into the phase change temperature control assembly from a pouring port in the bottom of the packaging container; and finally, the pouring port is sealed, and machining of the appearance of the temperature control assembly is finished.

The invention discloses a preparation method of antibacterial sepiolite powder. The preparation method comprises the steps of sepiolite acid activation, preparation of a nano-silver micellar solution, absorption of nano-silver particles in the nano-silver micellar solution through sepiolite and the like. According to the preparation method, a surface active agent emulsion is adopted to produce a 'nano-pool' through self-assembly, a polymer monomer serving as an oil phase and a silver ion water solution and a reducing agent water solution serving water phases are mixed to form a nano-silver reversed-micelle micro-emulsion, and the sizes of the nano-silver particles can be controlled by controlling the size of the 'nano-pool'. In addition, the nano-silver particles in modified sepiolite adsorption sol are utilized, the prepared antibacterial powder overcomes the shortcomings of poor heat resistance, likely hydrolysis, volatility and high toxicity and has the safety and the heat resistance of inorganic antibacterial powder, and the price of an antibacterial agent is reduced. Furthermore, the antibacterial broad spectrum activity is ensured, and accordingly the preparation method can be widely applied to the fields of building materials, medical facilities, medical apparatuses and instruments, daily supplies and the like.

The invention discloses environment-friendly inner wall latex paint. The environment-friendly inner wall latex paint is prepared from the following raw materials in parts by weight: 50 to 70 parts of nano particles, 40 to 60 parts of expanded perlite, 30 to 40 parts of cellulose, 15 to 30 parts of styrene-acrylic emulsion, 10 to 20 parts of nano active carbon, 8 to 15 parts of latex paint additives, 5 to 10 parts of filler, 2 to 6 parts of inorganic pigments and 50 to 80 parts of deionized water. The environment-friendly inner wall latex paint is nontoxic and harmless in the production and construction application, capable of decomposing harmful gases and purifying the air, and excellent in abrasion resistance and aging resistance at the same time.

The invention discloses a method for preparing an attapulgite-based pH value response antibacterial material. The method comprises the following steps: at a stirring state, directly spraying an aldehyde type natural antibacterial agent to the surface of attapulgite powder, further performing grinding in a ball milling, and spraying a chitosan-citric acid aqueous solution into a stirring tank; andperforming continuous stirring for 30-120 minutes after spraying is completed, and drying, screening and packaging the obtained material, so as to obtain the attapulgite-based pH value response antibacterial material. According to the method, aldehyde substances are retained in pores of attapulgite by using a mechanical chemical method, and a chitosan solution is further sprayed to the surface ofthe attapulgite, so that the aldehyde substances can be reacted with chitosan to form Schiff base, and problems that an aldehyde type natural antibacterial agent is easy to volatilize, heavy in irritant smell, and the like, can be overcome; and meanwhile, due to adoption of the chitosan, the antibacterial material is endowed with pH value response, namely under an acid condition, amino of the chitosan is protonized, antibacterial substances are not released, but under neutral and weak alkaline conditions, the Schiff base is hydrolyzed, and the antibacterial substances are continuously released, so that the antibacterial material can replace antibiotics applied to safe breeding of animals.

The invention discloses an environment-friendly developing tank dirt scavenging agent as well as a preparation method and an application method thereof. The environment-friendly developing tank dirt scavenging agent is prepared from the following raw materials: acid liquid, a solubilizing agent, a surfactant and de-ionized water, wherein the acid liquid is obtained by mixing one or more of components including sulfuric acid, hydrochloric acid, nitric acid, acetic acid, glycollic acid, citric acid and the like according to the equal mass ratio; the solubilizing agent is obtained by mixing one or more of components including ethanol, propylene glycol, isopropanol, butanediol, isobutanol, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether and the like; and the surfactant is glycerin fatty acid ester. The preparation method of the environment-friendly developing tank dirt scavenging agent comprises the following steps: adding water; adding a sulfuric acid solution into a stirring tank added with the de-ionized water; adding the hydrochloric acid into the stirring tank; adding the glycollic acid; adding the ethanol, the ethylene glycol monobutyl ether and the diethyleneglycol monobutyl ether; adding the surfactant; and finally, adding the de-ionized water to make the volume constant, and sufficiently stirring.

The invention relates to a preparation method of a high-molecular ultraviolet light absorber. The preparation method comprises the following steps: (1) carrying out esterification reaction on a small-molecular ultraviolet light absorber UV-0 and maleic anhydride under the conditions of a catalyst and heating to form a polymerization monomer M with an ultraviolet light absorption function; and (2)carrying out free radical copolymerization on the monomer M and a comonomer under the initiation of an initiator to form the high-molecular ultraviolet absorber. Compared with the prior art, the high-molecular ultraviolet light absorber is not easy to volatilize, easy to decompose due to irritability, low in toxicity and good in ultraviolet shielding effect.

A high-temperature resistant wax anticorrosion material is disclosed. The anticorrosion material is prepared from, by mass, 3-70% of polyethylene wax, 5-20% of polytetrafluoroethylene modified polyethylene wax, 0.5-4.5% of 2,6-bis(1,1-dimethylethyl)-4-methylphenol, 5-25% of white oil, 2-3% of petroleum sodium sulfonate, 1.5-10% of fumed silica, and 0.1-0.5% of polysiloxane. The anticorrosion material can overcome the problem that other flexible anticorrosion materials cannot resist high temperatures, and overcomes a problem that petrolatum type anticorrosion materials are prone to component loss and volatilization. The process and operation are simple. The anticorrosion material is prone to industrial production.

The invention provides a method for producing high-purity sulfur through sulfur paste extraction. The method comprises the following steps: (1) crushing and screening dried sulfur paste; (2) introducing pretreated raw materials and an organic solvent into a reactor with a steam heating jacket, and carrying out an extraction reaction at a certain temperature, wherein the organic solvent specifically is one or a mixture of more of xylene, solvent oil 200# and heavy benzol; (3) subjecting the obtained reacted solution to heat-preserving filtering treatment, then, introducing the treated solutioninto a crystallizer, and carrying out cooling crystallization and solid-liquid separation, thereby obtaining the target required sulfur; and (4) introducing the organic solvent cooled in the step (3)into the reactor in the step (2) again for recycle. According to the method, the sulfur is purified by making full use of high-temperature solubility of the organic solvent to the sulfur; and meanwhile, the method has the advantages of simple process, stability in operation, low production cost, high recovery rate, high purity and the like, so that the resource-converting utilization of wastes canbe effectively achieved.

The embodiment of the invention discloses a nitrogen-doped P-type monocrystalline silicon manufacturing method which comprises the following steps: putting highly-doped nitrogen single crystal and polycrystalline silicon into a crucible, and heating a crystal pulling furnace to obtain a first silicon melt; adding a highly doped boron single crystal into the first silicon melt to obtain a second silicon melt; and drawing the nitrogen-doped P-type monocrystalline silicon in the second silicon melt by a czochralski method. According to the nitrogen-doped P-type monocrystalline silicon manufacturing method, the nitrogen and the boron are completely fused into the silicon melt at a relatively low furnace chamber temperature, and the technical problems of high furnace chamber temperature and long heating time are solved. Meanwhile, the melting sequence of the highly-doped boron single crystal and the highly-doped nitrogen single crystal is changed, so that the condition of crystal pulling failure caused by the formation of boron nitride (BN) is inhibited.

The invention discloses a functionalized ionic liquid straight-chain primary amine phosphinate homolog, and a preparation method and application thereof. The method comprises the following steps: respectively dissolving straight-chain primary amine and Cyanex272 by adopting the same reaction medium, then mixing the two solutions for a reaction to obtain a crude product of the functionalized ionicliquid straight-chain primary amine phosphinate homolog; and subjecting the crude product to extracting, washing, dehydrating and rotary evaporation to obtain the purified functionalized ionic liquidstraight-chain primary amine phosphinate homolog. The homolog can selectively extract and recover cobalt in waste ion batteries, so valuable metals in solid waste resources are extracted and recoveredin an environment-friendly manner. The problems of high volatility and high toxicity of the existing organic extractant are solved, and a new technical route is provided for sustainable environment-friendly recovery of the waste lithium ion batteries; and the application fields of the green solvent and the functionalized ionic liquid are expanded, and sustainable development in the field of wastesolid waste resources is realized.

The invention relates to a method for preparing a catalyst for alkane ammoxidation reaction, which mainly solves the problem of complex preparation process such as Sb beard reflux in the existing technology, unstable preparation environment, low yield of unsaturated nitrile, and volatile active components of the catalyst. Problem, the present invention adopts V-Sb-Al base as the main composition of the catalyst, utilizes the reduction oxidation method, changes the preparation environment by adding reducing agent and oxidizing agent in the preparation process, that is, first reduces V to below +5 valence with reducing agent , then add the corresponding help metal salt or oxide solution, then directly add the corresponding salt or oxide of Sb to the above solution under stirring, and finally add the technical scheme of oxidant oxidation and corresponding amount of Al salt or oxide. The problem is solved, and it can be used in the industrial production of alkane ammoxidation to prepare unsaturated nitrile.

The invention relates to a three-layer troche which is characterized in that the troche (3) is formed by the following steps: by taking a troche core (1) as a core, wrapping a tabletting material around the troche core (1) for secondarily tabletting to form a troche body (2); spraying a coating layer (4) on the outer surface of the troche body (2); and by taking the troche body (2) as a core, wrapping a tabletting material round the troche body (2) for tabletting for the third time to form the troche (3). The coating layer (4) is 0.01-0.5mm thick. The thickness ratio of the troche core (1), the troche body (2) and the troche (3) is 1: (1.3-1.5): (1.7-2).

The present invention relates to a kind of preparation method of macromolecule ultraviolet light absorber, and this method comprises the following steps: (1) make small molecular ultraviolet light absorber UV-0, under the condition of catalyst and heating, make it and maleic anhydride Esterification reaction is carried out to form polymerized monomer M with ultraviolet light absorbing function; (2) Free radical copolymerization of monomer M and comonomer is initiated by an initiator to form polymerized ultraviolet light absorber. Compared with the prior art, the invention is less volatile, easy to decompose, less toxic, and has good ultraviolet shielding effect.

The invention discloses a method for separating lignin-based p-hydroxybenzaldehyde, vanillin and syringaldehyde. The method comprises an oxidation stage and a separation stage, in the oxidation stage, sulfite ions in a sodium hydrogen sulfite extract are oxidized into sulfate ions, and the yield of aromatic aldehyde in the process is not changed; therefore, the extract does not generate sulfur dioxide in the acidification process, and a non-volatile precipitation inducer is adopted. Thus, the defects that a precipitant is volatile and the generated volatile sulfur dioxide needs to be further treated in the traditional technology are overcome. The method is low in price, environment-friendly in reaction process and suitable for large-scale production. According to the method for separating a lignin oxidation product, the yield of sulfate ions is 60-100%, and 30-88% of syringaldehyde (the content of liquid chromatography is greater than 99%) is separated; the yields of p-hydroxy benzaldehyde and vanillin in the mixture C are both greater than 99%, the yield of syringaldehyde in the mixture C is 10-30%, and the mass of the p-hydroxy benzaldehyde, the vanillin and the syringaldehyde accounts for more than 95% of the total mass of the mixture C.

The invention discloses a method for synthesizing silane coupling agent, comprising: feeding the pretreated tetraalkoxy silane 1.5-2.0 mol, magnesium 1.0-1.2 mol and initiating agent iodine 0.001-0.01 mol in the reactor, stirring and heating up; adding pretreated the first haloalkane 1 mol when the temperature is 150-180 Deg C, then cooling to 120-150 Deg C for continuous reaction for 2-5 hours; filtering the generated magnesium salt, distilling the filtering medium to remove dissolvent and initiating agent iodine; fractionating and purifying the got coarse product and getting the silane coupling agent with purity larger than 99%-alkyltrialkoxy silane; the reaction is carried out under protection of nitrogen. The process is characterized by the no usage of ethers solvant which is inflammable and high toxic, simple process, easy-to-control and operate, 95% of productivity and above 99% of purity. The unreacted raw material distilled out can be recovered for reuse.

The invention discloses heat absorption and ultraviolet radiation prevention glass and a processing technology thereof. The heat absorption and ultraviolet radiation prevention glass comprises a firstglass body and a second glass body, wherein the inner surface of the first glass body is sprayed with a heat absorption and ultraviolet radiation prevention layer, and the outer surface of the firstglass body is sprayed with a high heat conduction material layer. The processing technology of the heat absorption and ultraviolet radiation prevention glass comprises the following steps that the glass bodies are prepared, heat absorption and ultraviolet radiation prevention dispersion liquid is prepared, a high heat conduction material is prepared, the outer surface of the first glass body is sprayed with the high heat conduction material, the inner surface of the first glass body is sprayed with the heat absorption and ultraviolet radiation prevention dispersion liquid, and the first glassbody and the second glass body are in press fit to obtain the heat absorption and ultraviolet radiation prevention glass. Experimental results show that the heat absorption and ultraviolet radiation prevention glass has better shading effect, can effectively prevent the transmission of ultraviolet rays and near infrared rays, has better light transmittance meanwhile, and is helpful to reduce the influence on indoor environment.