51results about How to "Not easy to polymerize" patented technology

The invention provides a method for controlling a low-melting-point inclusion in high-strength low-alloy steel, which comprises the following steps: 1, tapping into a ladle, and adding additives into molten steel in the ladle after the start of tapping, wherein the additives include an iron alloy, aluminum deoxidizer, slow release deoxidizer and lime; 2, performing LF (ladle furnace) refinement in the ladle, wherein the basicity range of slag in the refinement process is 3-6; the refining slag subjected to LF slagging comprises the following components in percentage by mass: 50-65% of CaO, 6-12% of MgO, 13-26% of Al2O3, 9-19% of SiO2 and less than 0.5% of (FeO+MnO); 3, after slagging, blowing Ar gas from the bottom of the ladle, and desulfurizing while strongly stirring; and 4, in the strongly stirring process and the subsequent process, reacting the slag, the molten steel and an inclusion. The invention has the following advantages: favorable deoxidization and desulfurization effect is achieved, and simultaneously, the composition of the non-metallic inclusion in the steel is controlled to be in a high-melting-point region of a CaO-MgO-Al2O3(-SiO2) phase diagram, so that the inclusion is less prone to polymerization, and less deformation is caused in the subsequent rolling process, thereby achieving the purpose of controlling the large strip-shaped inclusion in a high-strength low-alloy steel plate.

The invention discloses a two-step method for preparing olefin and aromatic hydrocarbon by catalyzing and upgrading bio-oil. Aqueous-phase bio-oil serves as a raw material, and the method comprises the following steps of: performing selective hydrogenation the aqueous-phase bio-oil, converting into stable compounds, and performing zeolite catalytic conversion on the stable compounds to obtain hydrocarbon compounds, wherein the selective hydrogenation is performed in a pressurized reactor, and the reaction conditions are that: the reaction atmosphere is hydrogen, a Ru / C and a Pt / C are catalysts, the temperature is between 100 and 300 DEG C, the mass space velocity is 1 to 5h<-1>, and the pressure is 5 to 15 MPa; the zeolite catalysis is performed in a normal pressure reactor, and the reaction conditions are that: the reaction atmosphere is hydrogen or nitrogen, the catalyst is HZSM-5, the temperature is between 350 and 650 DEG C, and the mass space velocity is 5 to 50h<-1>. The obtained olefin and aromatic hydrocarbon have the carbon yield of 30.3 to 50.8 percent and 18.4 to 26.8 percent respectively, and the catalysts for hydrogenation and zeolite catalysis have high stability.

The invention belongs to the technical field of novel water treatment materials or functional environmental materials, and particularly relates to a method for preparing precoating ultrafiltration membrane based on micro-emulsion modified nano-zero-valent iron (nano-ZVI) and an application method of the precoating ultrafiltration membrane. According to the method for preparing the preparing precoating ultrafiltration membrane, a turbid liquid of the micro-emulsion modified nano-zero-valent iron in methoxy polyethylene glycol amino (MPEG-NH2), coating 3-hydroxy-L-tyrosine (L-DOPA) on the surface of an ultrafiltration membrane, and grafting the nano-ZVI, combined with the MPEG-NH2, on the surface of the ultrafiltration membrane under a covalent combining action of amidogen in the MPEG-NH2 and the L-DOPA. The method has the advantages that the prepared precoating ultrafiltration membrane is high in anti-pollution capacity and capable of effectively removing pollutants including heavy metal like chromium, arsenic, antimony and the like and organic halides in the water.

The invention belongs to the technical field of water treatment novel materials or environmental functional materials and particularly relates to a preparation method and application method of an ultrafiltration membrane based on a microemulsion-modified nano-zero-valent iron-carbon material precoated layer. The preparation method comprises the following steps: firstly preparing microemulsion-modified nano-zero-valent iron, then preparing turbid liquid of the microemulsion-modified nano-zero-valent iron and carbon material in amino polyethylene glycol monomethyl ether (MPEG-NH2), and coating the surface of the ultrafiltration membrane with 3-hydroxyl-L tyrosine (L-DOPA); and grafting nano-ZVI and carbon material bonded with MPEG-NH2 to the surface of the ultrafiltration membrane by virtue of a covalent binding action between amino in the MPEG-NH2 and L-DOPA. The material prepared by virtue of the preparation method has very strong anti-pollution capacity and is capable of effectively removing heavy metals, such as chromium, arsenic and antimony, and organic pollutants, such as nitrobenzene and organic halide, in water.

The invention provides a method for controlling a low-melting-point inclusion in high-strength low-alloy steel, which comprises the following steps: 1, tapping into a ladle, and adding additives into molten steel in the ladle after the start of tapping, wherein the additives include an iron alloy, aluminum deoxidizer, slow release deoxidizer and lime; 2, performing LF (ladle furnace) refinement in the ladle, wherein the basicity range of slag in the refinement process is 3-6; the refining slag subjected to LF slagging comprises the following components in percentage by mass: 50-65% of CaO, 6-12% of MgO, 13-26% of Al2O3, 9-19% of SiO2 and less than 0.5% of (FeO+MnO); 3, after slagging, blowing Ar gas from the bottom of the ladle, and desulfurizing while strongly stirring; and 4, in the strongly stirring process and the subsequent process, reacting the slag, the molten steel and an inclusion. The invention has the following advantages: favorable deoxidization and desulfurization effect is achieved, and simultaneously, the composition of the non-metallic inclusion in the steel is controlled to be in a high-melting-point region of a CaO-MgO-Al2O3(-SiO2) phase diagram, so that the inclusion is less prone to polymerization, and less deformation is caused in the subsequent rolling process, thereby achieving the purpose of controlling the large strip-shaped inclusion in a high-strength low-alloy steel plate.

The invention provides an HDPE pipe and a preparation method thereof. The preparation method comprises the following steps: firstly, mixing and reacting a vanadium-modified SBA-15 molecular sieve withtitanium tetrachloride and butyl titanate to prepare a catalyst; grafting graphene with polyglutamic acid to obtain a filler; then, under the action of a catalyst, carrying out a polymerization reaction on vinyl fluoride, 1-octene, hydrogen, ethylene and the like used as raw materials to obtain a resin matrix; and finally, carrying out melt blending on the resin matrix and filler to obtain the HDPE resin. On the premise that other mechanical strength indexes are not affected, the flexibility of the HDPE resin can be greatly improved, market vacancy is made up, and the HDPE resin has good market prospects.

The invention belongs to the field of organic synthesis and specifically relates to a preparation method of sodium p-styrenesulfonate. The preparation method comprises the following steps: (1) (2-chloroethyl)benzene and SO3 react to generate p-sulfonic acid-(2-chloroethyl)benzene; and (2) the p-sulfonic acid-(2-chloroethyl)benzene prepared in the step (1) reacts with NaOH to generate sodium p-styrenesulfonate. The invention has the following advantages: (2-chloroethyl)benzene adopted in the invention is cheap and easily available and its unit consumption and cost are lower. In addition, motherliquor produced by the method can be subjected to centrifugal separation to obtain pure sodium p-styrenesulfonate. Part of sodium p-styrenesulfonate dissolved in the primary mother liquor can be recovered to obtain a recycled product. Recovered secondary mother liquor almost contains no sodium p-styrenesulfonate, and concentrated secondary mother liquor can recover industrial sodium chloride. Thereby, the pollution of ''three wastes (waste gas, waste water and industrial residue)'' to the environment is reduced. In addition, the sodium p-styrenesulfonate prepared by the method is not easy topolymerize. The prepared product is not easy to polymerize when being placed or dissolved for use, and the property is stable.

The invention belongs to the technical field of preparation of lubricating materials, and particularly relates to a preparation method of an anti-wear agent. The preparation method comprises the following steps: preparing anti-wear suspension by taking multi-walled carbon nanotubes as a raw material; mixing and heating microbial oil, ethyl palmitate, lithium amide and the like to obtain an esterification product; finally, distilling an antioxidant lubricating grease crude product to obtain antioxidant lubricating grease; subjecting rapeseed oleic acid, azelaic acid and neopentyl glycol which are used as raw materials to esterification to obtain mixed ester; adding the mixed ester into the anti-wear suspension to obtain the anti-wear agent. Aluminum in the anti-wear suspension in the anti-wear agent participates in a local metallurgical reaction to achieve surface modification so that the anti-friction and anti-wear effects are achieved; an aluminum oxide passivation film can be formedto improve extreme pressure lubricating and antioxidant performance. Through the high polarity of the antioxidant lubricating grease, the conversion rate of the calcite crystal form formed by calciumlignosulphonate is improved, and the high-temperature resistance and the self-repairing performance of a lubricant are improved, such that the prepared anti-wear agent has broad application prospects.

The invention provides a broad-spectrum bacterial nano-silver finishing agent and a preparation method thereof. The finishing agent is prepared from the following components in parts by weight: 10 to 12 parts of common andrographis herb ethanol extract, 15 to 26 parts of herba houttuyniae ethanol extract, 4 to 6 parts of nanosilver and 0.1 to 0.3 part of bonding agent. The common andrographis herb ethanol extract and the herba houttuyniae ethanol extract have broad-spectrum antibacterial functions, and the antibacterial activities of the extracts are increased after ultrasonic treatment; the antibacterial function of the nanosilver is enhanced further in cooperation with the nanosilver. A silver nitrate solution is difficult to polymerize after infrared and ultrasonic treatment, a dispersing agent does not need to be added, and the prepared nanosilver has high stability.

The invention discloses a method for preparing fuel from light bio-oil, which is characterized by comprising the following steps of 1, changing the light bio-oil into an alcohol substance, and 2, converting the obtained alcohol substance into an ether substance. In the step 2, a method for changing the changed alcohol substance into the ether substance is as follows: liquid olefin containing double bonds is added into the changed alcohol substance, and the high-quality ether substance is generated through an addition reaction. The bio-oil is subjected to an addition reaction to generate a high-quality ether substance which is used as an oxygen-containing additive. According to the method, the molecular weight of each component in the light bio-oil can be improved, and the combustion performance of the light bio-oil is improved, so that the utilization value of the light bio-oil is improved; and the problems of low efficiency and poor product selectivity caused by direct catalytic upgrading due to complex light bio-oil components can be well solved.

The invention discloses Ni / Fe double-metal face-centered cubic crystal nano-particles and a preparing method and application thereof. The liquid phase reduction method is adopted, PVP is used as a stabilizer, NaBH4 is used as a reducing agent, ferrous ions and nickle ions are added step by step for reduction, prepared Ni / Fe double-metal nano-particles are of a regular face-centered cubic structure, particle size distribution is even, particle size is large than the surface area, stability is good, and the polymerism can not easily happen. The prepared nano-particles can effectively catalyze and degrade polychlorinated biphenyl. Needed reaction equipment of the nano-particles is simple, equipment cost is low, the preparation process is high in controllability and simple in operation, the reaction condition is mild, and further industrial production is possible.

The invention discloses a heating system for caprolactam polymerization reaction device, which includes a reaction cartridge constituted of an upper cartridge and a lower cartridge. A upper supporting plate is disposed in the upper cartridge, through-holes are arranged at both the upper supporting plate and the upper cartridge, and steel pipes are connected to a pair of corresponding through-hole. A distribution cavity is remained at top of the upper supporting plate and the upper cartridge, and caprolactam inlet is arranged at top of the distribution cavity. The lower cartridge is constituted of inner cartridge and outer cartridge to form jacket. Upper end of the inner cartridge is connected with bottom plate of the upper cartridge, a caprolactam outlet is disposed at bottom of the lower cartridge, and heat conductivity oil source is also included in bottom of the lower cartridge. Oil inlet and outlet are both disposed at upper cartridge and lower cartridge, the oil outlets are connected with inlet of the heat conductivity oil source by oil pipe, and the oil inlets are connected with outlet of the heat conductivity oil source by oil pump and valve. Advantages of the heating system are: fire hazard and explosion accident can be avoided, production efficiency is high, cost is low, and the heating system is adapt for heating polymerization reaction device for producing nylon section with caprolactam as raw material.

The invention relates to the field of analysis, in particular to a method for purifying EPA from fish oil. The method provided by the invention has high selectivity and separation efficiency, and has a good separation effect on EPA, DHA and other impurities; it has certain selective adsorption on unsaturated fatty acids and impurities in fish oil, and has a high sample loading capacity; using organic The mobile phase of solvent or organic solvent / water system, the solvent can be recycled and reused, reducing the cost of industrialization.

The invention discloses a method for producing graphene through vacuum photoelectric reaction. The method comprises the following steps: mixing graphite of 1000 meshes with ionized water, and spraying to the inner side of a glass tube; putting the glass tube into a vacuum furnace, vacuumizing, setting electrodes before and after the vacuum furnace, and electrifying the electrodes for photoelectric hating so as to dry and dehumidify the glass tube; and continuously heating, ensuring that the glass tube is completely vacuumized inside, adding helium and neon simultaneously according to a ratio of 4:6, keeping the glass tube being in a vacuum state, continuously electrifying for oxidation reduction for 3-4 hours, and discharging, thereby obtaining the graphene. As graphene is produced in a novel photoelectric reaction mode, and energy transition of photoelectric atoms is utilized, multi-layer graphene can be reduced; meanwhile, as the reaction does not involve multiple oxidation reductants, the production is clean and non-toxic; and furthermore, multiple glass tubes can be placed into the vacuum furnace for carrying out sufficient and uniform reaction simultaneously in uniform contact, so that the capacity and quality can be greatly improved.

The invention discloses a preparation method of lipophilic hyperbranched molecule modified nanofluid, wherein the nanofluid is composed of a liquid medium and nanoparticles dispersed in the liquid medium. The preparation method comprises the main steps of preparation and dispersion of the nanoparticles. The surface of the nano material is modified by lipophilic hyperbranched molecules. Compared with the prior art, the preparation method has the advantages that the nano particles are dispersed stably without agglomeration, the nano particles are loaded by utilizing the specific dendritic macromolecular structure of the hyperbranched polyethyleneimine grafted by long-chain alkyl acyl chloride, the number-average molecular weight of hyperbranched molecules is distributed between 1000 and 36000. The prepared nano particles are relatively small in particle size, not easy to agglomerate and good in stability. By the addition amount of 0.01%-5%, the nano fluid with good stability and excellent heat-conducting property can be obtained; and the preparation process is controllable, good in repeatability and easy to popularize.

The invention provides a non-phosphorus scale and corrosion inhibitor containing fulvic acid. The non-phosphorus scale and corrosion inhibitor containing fulvic acid is composed of a scale inhibition component, a corrosion inhibition component and deionized water. The scale inhibition component is composed of fulvic acid, a maleic acid-acrylic acid biopolymer and polyaspartic acid. The corrosion inhibition component is composed of zinc sulfate and polyoxyethylene naphthenic acid imidazoline. A preparation method of the non-phosphorus scale and corrosion inhibitor comprises the following steps: adding zinc sulfate into deionized water to obtain a mixture A; adding fulvic acid into the mixture A to obtain a mixture B; successively adding the maleic acid-acrylic acid biopolymer and polyaspartic acid into the mixture B to obtain a mixture C; and finally adding polyoxyethylene naphthenic acid imidazoline into the mixture C to obtain the non-phosphorus scale and corrosion inhibitor. The corrosion inhibitor is phosphorus-free, contains fulvic acid, has good corrosion inhibition property and scale inhibition property and is especially suitable for high-hardness and high-alkalinity water in North China.

The present invention provides an evaporation method and apparatus for an easily polymerizing hydrocarbon solution, said evaporation method includes processes that: the easily polymerizing hydrocarbon solution is fed into a main evaporator(1),the evaporated hydrocarbon gas is discharged from the top of the main evaporator(1), the evaporated liquid components are drawn out via a cycle pump(2) fromthe bottom of the main evaporator(1), part of them being circularly fed into the main evaporator(1) and part of them being fed into a film evaporator(3). The evaporated hydrocarbon gas is then discharged from the top of the film evaporator(3) and the remnant liquid after evaporation is forced to be discharged from the film evaporator(3). The forced circulation evaporator and the film evaporator in this invention combines to realize the evaporation process, the polymeric monomer in the easily polymerizing hydrocarbon solution is not subject to polymerization, thereby improving the evaporation efficiency, maintaining the steady operation, lowering the consume of source and energy.