70 results about "Macromolecular architecture" patented technology

The invention discloses supercritical extrusion liquid crystal fiber reinforced PET foam and a preparation process thereof. The preparation process comprises the steps of material drying, liquid crystal spinning, material granulation and extrusion foaming. The liquid crystal polymer macromolecular chain used in the invention is different from the traditional polymer in zigzag, random coil and internetwork macromolecular structure form, and the liquid crystal polymer consists of rigid and straight macromolecules without internetwork; under the melt forming condition, the viscosity is sharply reduced, and rigid macromolecules are very easy to be arranged in one direction along the height orientation of the melt flowing direction; after cooling and curing, the macromolecule arrangement is kept to form highly-oriented rod-like macromolecules; the macromolecular structure form formed by the aromatic polyester basic chain has the advantages of high strength, high modulus and excellent mechanical property.

The invention provides a double-sided adhesive tape for pasting a low-surface-energy material and a preparation method of the double-sided adhesive tape. The adhesive tape is of a four-layer structure and comprises an acrylate pressure-sensitive adhesive layer and the like. Through selection of raw materials and design of a macromolecular structure, good wetting and bonding of a low-polarity base material are realized by utilizing an acrylic acid long-chain alkyl ester chain segment, and the problem that a low-surface-energy material is difficult to bond is solved. The adhesive formula used in the invention contains a special chain segment, has strong affinity with a low-polarity base material, and has a good bonding effect; polymerization reaction design is ingenious, and polymer performance is ensured; the monomer combination is reasonable, the compatibility is ensured, the polarity is reduced, an effective solution is provided for bonding of low-surface-energy materials, and the method has a wide application prospect.

The invention belongs to the technical field of functional ceramics, and particularly discloses a method for preparing rare earth doped garnet transparent ceramics through tape casting, which comprises the following steps: taking rare earth doped garnet powder, Karlan gum and a dispersing agent, adding water, and carrying out wet ball milling to prepare ceramic slurry; defoaming the ceramic slurry, and carrying out tape casting to prepare a ceramic biscuit; and discharging glue from the ceramic biscuit, and sintering in a vacuum environment. According to the invention, rare earth doped garnet powder is used as a main raw material, a certain amount of a Karlan gum organic monomer and a dispersant are added to prepare ceramic slurry, and tape casting is adopted to prepare the transparent ceramic. The rare earth doped garnet powder is cured in a network molecular structure by utilizing a network macromolecular structure of the Karlan gum, and dissolved matters in a solvent cannot migrate along with directional movement of the solvent in a drying process, so that the uniformity of components and structures of a green body is ensured, and the transparent ceramic with high transparency, high density and good uniformity is prepared.

The present invention discloses a LCP liquid crystal polyester fabric for preparing a low dielectric and high peel strength PCB copper clad plate and a preparation method thereof, which mainly comprises 3 to 15 parts of hyperbranched polyester-polyphenylene ether functional masterbatch and 85 to 97 parts of conventional spinning-grade LCP liquid crystal resin. Specifically comprising the following preparation process: (1) a novel polyester-polyphenylene ether copolymer functional masterbatch is prepared by macromolecular structure design; (2) the prepared polyester-polyphenylene ether copolymer functional masterbatch is blended and spun with conventional spinning-grade liquid crystal LCP polyester to form a modified LCP liquid crystal polyester fiber, and then the prepared modified liquid crystal polyester fiber is plain woven into a liquid crystal polyester fabric. The present invention realizes that only a trace amount of the prepared functional masterbatch is added to improve the compatibility of the fully aromatic liquid crystal polyester and the polyphenylene ether resin, and the original mechanical, heat resistance and other properties of the liquid crystal polyester fiber are preserved to the maximum extent through the optimization design of the structure and performance of the material itself.

The invention discloses a method for preparing a coal-based carbon material by finely regulating and controlling a coal macromolecular structure and application of the coal-based carbon material, and belongs to the technical field of electrochemical energy storage. The method comprises the following steps: crushing and deliming raw material coal to obtain ultralow-ash-content coal powder; the method comprises the following steps: uniformly mixing ultralow-ash-content coal powder with extraction solvents with different polarities according to a certain proportion, weakening intermolecular interaction force by applying a certain condition, and enriching similar chemical components; pre-oxidizing the obtained pulverized coal, mixing the pre-oxidized pulverized coal with a catalyst and an additive in an organic solvent, and carrying out deep oxidation in an oxidizing atmosphere to promote directional conversion of hydroxyl generated by pre-oxidation to carboxyl; and transferring the carboxylated coal powder into a carbonization furnace, and carrying out high-temperature carbonization under the protection of inert gas to obtain the amorphous carbon material with high closed pore content. The coal-based carbon material prepared by the method shows rich closed pore content and excellent pore connectivity, obtains ultrahigh reversible specific capacity when being used as a sodium ion battery negative electrode, and is easy to realize large-scale preparation of the high-performance coal-based carbon material.

The invention provides a body type organic silicon macromolecular azide coupling agent and a preparation method thereof. According to the invention, a macromolecular azide coupling agent with excellent performance is developed through molecular design and combination of cross-shaped and dendritic organic silicon structures. The coupling agent can be efficiently decomposed under ultraviolet irradiation and realize crosslinking of materials, and has the following advantages: (1) efficient crosslinking: uniform distribution of azide groups improves the uniformity and density of crosslinking; (2) safety and stability: the macromolecular structure significantly improves the storage stability of the material, and reduces the toxicity and explosion risk; and (3) multi-functional adaptation: due to the structural flexibility, the method is suitable for multiple fields such as photoresist, liquid crystal displays and biological imaging, and has a wide application prospect.

This invention discloses a method and system for converting waste plastics into hydrogen based on microwave pretreatment and solar photocatalytic reforming, belonging to the field of solid waste resource utilization and clean energy technology. The method includes: mixing waste plastics with water for microwave pretreatment to destroy their macromolecular structure and generate a liquid-phase product rich in small-molecule organic matter; performing solid-liquid separation on the liquid-phase product; and conveying the separated liquid to a flat-plate photocatalytic reactor for photocatalytic reforming under sunlight irradiation and the action of a catalyst supported on a 3D-printed substrate to produce hydrogen and high-value chemicals. The system includes a microwave pretreatment unit, a filtration unit, and a flat-plate photocatalytic reaction unit connected in sequence. This invention achieves efficient, low-carbon, and high-value conversion of waste plastics through the synergy of microwave pretreatment and solar photocatalytic reforming, effectively overcoming the problems of high energy consumption, poor product selectivity, and low photocatalytic efficiency in existing technologies.

The application discloses a preparation method of organic garbage carbon source by composite enzyme combined with nitrogen precipitation. Firstly, enzyme pretreatment is performed on organic garbage materials, starch enzyme, cellulase and hemicellulase are used in cooperation to make macromolecular structure of organic matter be broken, so that preliminary release and partial dissolution of carbon source substances are realized; subsequently, sodium tetraphenylborate is added in the pretreatment system to selectively precipitate nitrogen substances in the solution, and centrifugal separation is performed to reduce nitrogen content of the system; on the basis, potassium persulfate and iron substances are added into the obtained suspension liquid to build a Fenton-like reaction system, residual organic macromolecules are further oxidized and degraded, and the structure is optimized, so that availability and stability of the carbon source are improved. In the whole process, each link cooperates, so that the organic garbage can be efficiently converted into high-quality carbon source with high C / N ratio and COD value, and can be used in a sewage treatment system as stable external carbon source.

The invention relates to a film material film processing device and method for a rotary kiln, the film material film processing device comprises a rotating shaft arranged in the center of the rotary kiln, a rotating shaft rotating speed adjusting mechanism and a plurality of film mechanisms vertically and fixedly arranged on the rotating shaft, the film mechanisms are rotationally arranged in the rotary kiln, and the rotating speed adjusting mechanism controls the rotating shaft to rotate; the adjusting rotation speed is related to the combustibility of the processed object; the solid waste and the hazardous waste in the furnace are pressed into a molten film state through the continuous rotary pushing and compacting effect of the film forming mechanism and are evenly distributed on the inner side wall face of the rotary kiln. By means of the material thinning mechanism, on one hand, the contact surface area of solid waste and hazardous waste and the wall face of the rotary kiln is increased, the heat exchange effect of the solid waste and hazardous waste and the rotary kiln is enhanced, and therefore the pyrolysis effect and combustion efficiency of the solid waste and hazardous waste are improved; and on the other hand, the fragmentation degree of macromolecular structures of solid waste and hazardous waste subjected to film treatment is more thorough, and pyrolysis is more thorough, so that the operation energy consumption of the secondary combustion chamber can be further reduced, and the overall operation efficiency of the system and the steam output quality are improved.

The invention discloses a cationic chromatographic filler preparation method based on RAFT (reversible addition-fragmentation chain transfer) polymerization, which comprises the following steps: synthesizing monodisperse linear polystyrene microsphere seeds by adopting a dispersion polymerization method, synthesizing polystyrene-divinyl benzene microspheres with high crosslinking degree by adopting a single-step seed swelling method, carrying out reversible addition-fragmentation chain transfer polymerization, and carrying out column packing by adopting a homogenization method. Compared with the traditional free radical polymerization, the preparation method not only retains the multifunctionality of the traditional free radical polymerization, but also solves the problem that the traditional free radical polymerization cannot well control the molecular weight and macromolecular structure, and is simple in process, convenient to operate and suitable for industrial production. The method has a potential application prospect in specific challenges of chromatographic separation and biomacromolecule separation.

The invention relates to a carbon molecular sieve and a preparation method thereof, and the preparation method of the carbon molecular sieve comprises the following steps: removing inorganic matters in biochar to less than 100 ppm; mixing the biochar and urea, and then putting the mixture into a reaction furnace to react and crosslink to form a macromolecular structure; grinding the macromolecular structure into biochar particles; mixing the biological coke particles with biological pyrolytic oil and water, and performing extrusion molding to obtain a carbon molecular sieve extrusion material; carbonizing the carbon molecular sieve extruded material in a rotary furnace; after carbonization is completed, water vapor is introduced into the rotary furnace for activation; after activation is completed, benzene is introduced into the rotary furnace for deposition, and the carbon molecular sieve is obtained. According to the carbon molecular sieve and the preparation method, the biochar is used as a carbon source, the raw material price is low, and the production cost is reduced.

The invention discloses a method that uses a measured density map of a molecule and related molecular model to improve the resolution of the molecule structure using fitness scores between conformers of models of the unresolved parts of the molecule and the density map.

The invention provides temperature-sensitive degradable gel for treating intrauterine adhesion and a preparation method thereof, and belongs to the technical field of gel. The preparation method comprises the following steps: preparing an amygdalin-loaded polymer; preparing hydroxyproline modified chitosan; and mixing to prepare the temperature-sensitive degradable gel. Soybean protein isolate and carboxymethyl konjac glucomannan are prepared into solutions, then amygdalin is added into the soybean protein isolate solution, then the mixture is mixed with the carboxymethyl konjac glucomannan solution for electrostatic self-assembly polymerization to form a carrier with a three-dimensional macromolecular structure, the amygdalin is loaded, and the amygdalin / carboxymethyl konjac glucomannan composite material is obtained. After the amygdalin-loaded polymer is added into the gel, the deformation resistance of the gel can be enhanced, so that the effect of improving the supporting force of the gel is achieved, and the recurrence rate of intrauterine adhesion is reduced.

The invention discloses an immersed cooling liquid and a preparation method thereof, and relates to the technical field of cooling liquids, the immersed cooling liquid comprises the following raw materials by weight: 90-100 parts of base oil, 7-9 parts of an auxiliary agent A, 4.5-5.5 parts of an auxiliary agent B, and 0.5-1.0 part of an antifoaming agent. The auxiliary agent A is obtained by modifying a high-thermal-conductivity insulating filler through a reaction and introducing benzotriazole and an alkane long chain. The auxiliary agent B is a substance which contains hindered phenol, DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) and an alkane long chain and has a hyperbranched macromolecular structure. The auxiliary A and the auxiliary B are added, so that the immersed cooling liquid has excellent thermal conductivity, corrosion inhibition, oxidation resistance and flame retardance, the synthesis process of the auxiliary A and the auxiliary B is environmentally friendly, and the immersed cooling liquid is worthy of being popularized in the technical field of cooling liquid and has a considerable application prospect.

The invention relates to a catalytic system based on at least one neodymocene borohydride, a co-catalyst which is a dialkylmagnesium compound of formula RB-Mg-RL, in which RB is a secondary alkyl of formula R2CH and RL is a primary alkyl of formula RCH2, the Rs, identical or different, being alkyls. The catalytic system addresses the objective of improved macrostructure control in a polymerization process of ethylene or a monomer mixture containing ethylene and a 1,3-diene.

The invention discloses a preparation method of a low-heat vacuum volatile epoxy adhesive, which is characterized in that liquid epoxy resin is epoxy resin NPEL-128R; the diluent is a diluent 1, 6-hexanediol diglycidyl ether; the curing agent is a polyether amine curing agent D-230; the ratio of the mole number of epoxy in the epoxy resin NPEL-128R and the diluent 1, 6-hexanediol diglycidyl ether to the mole number of active hydrogen in the polyether amine curing agent D-230 is 1: 1, the epoxy and the curing agent component are subjected to addition and chain extension through ring opening in the addition curing process, and then the reaction continues to form a stable macromolecular network structure. The addition curing mode has a strict raw material proportion, and a stable and large polymer molecule can be obtained according to an equal mole number reaction. In the reaction process, the epoxy resin and the curing agent amine can participate in the addition reaction strictly according to the equal mole ratio, and the reaction produces a stable macromolecular structure.

This invention provides a bird safety glass film, its preparation method, and a bird safety glass assembly. By introducing specific types of silicon-containing monomers with a conjugated π-electron structure, liquid polysiloxane is prepared. Then, through cross-linking and curing, solid siloxane polymers are obtained from the liquid polysiloxane, forming a transparent macromolecular polymer film with a network structure. This film absorbs ultraviolet rays from sunlight while keeping visible light unaffected, thus achieving a visual effect that is visible to birds but transparent to humans. The network macromolecular structure results in a more uniform distribution of functional monomers and a more stable chemical state of functional groups, significantly improving the stability of the film or glass assembly and extending its service life, making it suitable for large-scale application.

The invention discloses a preparation method of castor oil-based biomass lubricant base oil, and belongs to the technical field of base oil. The preparation method comprises the following steps: ester exchange reaction, esterification reaction, epoxidation reaction, ring-opening reaction and bridging esterification reaction. The prepared base oil constructs a macromolecular structure through bridging esterification, so that the base oil is endowed with high viscosity; unstable carbon-carbon double bonds in the raw materials are eliminated through the epoxidation step, the flash point of the base oil is increased, and the service life of the oil product is prolonged; the introduced long-chain alkyl side chain effectively prevents molecules from crystallizing at low temperature, and the pour point is reduced; castor oil is used as an initial raw material, and the source is renewable; the final ester structure is easily decomposed by microorganisms and is environment-friendly; in a word, the biomass raw material is successfully converted into the base oil with'high viscosity index, low pour point, high flash point and good biodegradability 'through an innovative synthesis route, and the base oil has important application value in the technical field of base oil.

The application discloses a nanoscale organosilicon cluster phosphinic acid flame retardant and a preparation method thereof. The flame retardant is a reticular macromolecular structure flame retardant with group synergistic effect, which is prepared based on hypophosphorous acid, siloxane compound and free radical initiator. The flame retardant realizes the combination of siloxane and hypophosphorous acid in the same structure unit, and improves the flame retardant efficiency. Meanwhile, the structure unit contains hydroxyl functional groups, crosslinking with a matrix such as epoxy resin to improve the crosslinking density. The polymer particle size reaches the nanoscale through a physical method, and the mechanical properties of the material are improved. In addition, the application has high yield, and the preparation process and product post-processing process operation are simple. The flame retardant has the characteristics of high flame retardant efficiency and excellent compatibility, and is a halogen-free high-efficiency phosphorus-silicon synergistic flame retardant.

The preparation method comprises the following steps: adding 5-30 parts of tannic acid into a low-boiling-point polar solvent, adding 2-40 parts of isocyanate under stirring and nitrogen protection, carrying out a stirring reaction at room temperature to 70 DEG C for 0.5-10 h, adding 1-20 parts of hydroxyethyl acrylate, continuously carrying out a reaction at room temperature to 70 DEG C for 0.5-10 h, and carrying out a reaction at room temperature to 70 DEG C for 0.5-10 h so as to obtain the delayed-light-curing environment-friendly adhesive composition. The preparation method comprises the following steps: adding 5-30 parts of epoxidized soybean oil acrylic resin, 1-30 parts of bisphenol epoxy acrylate and 1-20 parts of a diluent, uniformly stirring, adding 1-6 parts of a cationic photoinitiator and 0.5-4 parts of a free radical photoinitiator, stirring, and evaporating to remove a solvent under reduced pressure to obtain the adhesive. The property of a natural material tannic acid is utilized, isocyanate is used for blocking to form a macromolecular structure containing isocyanate, the bonding strength of the adhesive is enhanced through introduction of an isocyanate group and bisphenol epoxy acrylate, the epoxidized soybean oil acrylic resin has the characteristics of being green and low in toxicity, and as one of the components of the adhesive, the epoxy soybean oil acrylic resin has the advantages of being environmentally friendly and low in toxicity. And the safety of the product can be obviously improved.

The application discloses polyacrylonitrile primary fiber, polyacrylonitrile fiber and a preparation method and application thereof, and belongs to the technical field of high polymer materials and fiber manufacturing. A part of cyano groups on a molecular chain is converted into carboxylic acid salt by performing a partial hydrolysis reaction on polyacrylonitrile in a mixed system of an organic solvent and an inorganic alkali aqueous solution through ultrasonic assistance; the hydrolysis product is dissolved to prepare a spinning solution, and after jetting, in-situ acidification and coagulation and stretching in a coagulation bath containing a protonic acid, a polyacrylonitrile primary fiber containing a carboxyl group is obtained. After washing and stretching, the primary fiber is crosslinked and heat-drawn under high-temperature and negative-pressure conditions, so that the carboxyl groups between the molecular chains are dehydrated to form anhydride bonds, a three-dimensional network macromolecular structure is constructed, and a high-strength polyacrylonitrile fiber is obtained through relaxation and heat setting. The polyacrylonitrile fiber has a breaking strength greater than 9.0 cN / dtex, has the advantages of high strength, stable structure and strong controllability of process, and can be suitable for industrialized production of high-strength polyacrylonitrile fiber.

The invention belongs to the technical field of wastewater treatment, and discloses a self-emulsified oil wastewater remover and a preparation method thereof. The self-emulsified oil wastewater remover comprises the following raw materials in parts by weight: 30-50 parts of sulfomethylated tannin, 15-25 parts of aluminum sulfate, 0.5-2 parts of polyacrylamide, 1-3 parts of sodium hydroxide and 10-20 parts of polyaluminum chloride. According to the method, the sulfomethylated tannin is applied to removal of the self-emulsified oil wastewater, and the emulsification state of oil drops is effectively destroyed through the emulsification destroying effect of the sulfomethylated tannin, so that oil-water separation is promoted. The macromolecular structure and active groups of the modified tannin provide more adsorption sites and a stronger bridging effect, and the oil drop aggregation speed and efficiency are improved.

Provided herein are macromolecular structures comprising a surface, tethered moiety, and a macromolecular chain, compositions thereof, and methods of making the same. Also provided herein are systems and kits comprising the macromolecular structures.

The invention relates to the technical field of food processing, and discloses tremella aurantialba and blueberry anthocyanin synergistic antioxidant jelly and a preparation method thereof.The jelly is prepared from, by weight, tremella aurantialba polysaccharide, blueberry anthocyanin extract, a sweetening agent, a pH regulator and water. The beverage is prepared from the following raw material components: 2.0 to 5.0 percent of tremella aurantialba polysaccharide, 0.1 to 0.5 percent of blueberry anthocyanin extract, 5.0 to 10.0 percent of sweetening agent, 0.05 to 0.2 percent of pH (Potential of Hydrogen) regulator and the balance of water. Hydroxyl of tremella aurantialba polysaccharide can remove part of free radicals, meanwhile, the macromolecular structure of the tremella aurantialba polysaccharide can serve as a carrier to wrap anthocyanin molecules and promote dispersion and absorption of anthocyanin, blueberry anthocyanin efficiently removes the free radicals through electron transfer of phenolic hydroxyl, and under the synergistic effect of the tremella aurantialba polysaccharide and the blueberry anthocyanin, the DPPH free radical scavenging rate of the jelly is larger than 90%. Compared with single tremella aurantialba polysaccharide jelly, the removal rate is increased by 50-60%, and compared with single blueberry anthocyanin jelly, the removal rate is increased by more than three%, and the antioxidant function is remarkably enhanced.

The invention discloses a method for preparing a fully aromatic liquid crystal polyester and its fiber which is beneficial to the compounding of PPO resin, which is mainly prepared by co-spinning 85-97 parts of spinning-grade LCP resin and 3-15 parts of hyperbranched polyester-polyphenylene ether functional masterbatch. The hyperbranched polyester-polyphenylene ether functional masterbatch is a novel polyester-polyphenylene ether copolymer prepared by macromolecular structure design, and the polyester segment and polyphenylene ether segment in its molecular structure respectively give the copolymer compatibility with aromatic liquid crystal polyester and polyphenylene ether PPO resin, and its own spherical branched macromolecular structure gives the functional masterbatch high fluidity and low melt viscosity performance. When the hyperbranched polyester-polyphenylene ether functional masterbatch is co-spinned with conventional spinning-grade fully aromatic liquid crystal polyester, its own low viscosity and high fluidity characteristics can be utilized to realize that the branched polyester-polyphenylene ether functional masterbatch resin is preferentially enriched on the surface of the fully aromatic liquid crystal polyester fiber.

The invention discloses a method for preparing an organic garbage carbon source by combining compound enzyme with nitrogen precipitation. The method comprises the following steps: firstly, carrying out enzyme pretreatment on an organic garbage material, and breaking a macromolecular structure of an organic matter by adopting a synergistic effect of amylase, cellulase and hemicellulase, so as to realize primary release and partial dissolution of a carbon source substance; then, sodium tetraphenylborate is added into the pretreatment system, nitrogen substances in the solution are selectively precipitated, and the nitrogen content of the system is reduced through centrifugal separation; on the basis, potassium persulfate and iron substances are added into the obtained turbid liquid, a Fenton-like reaction system is constructed, residual organic macromolecules are further oxidized and degraded, and the structure of the residual organic macromolecules is optimized, so that the availability and the stability of a carbon source are improved. In the whole technological process, all links have a synergistic effect, so that the organic garbage can be efficiently converted into a high-quality carbon source with a relatively high C / N ratio and a relatively high COD value, and the carbon source can be used as a stable exogenous carbon source in a sewage treatment system.

The invention belongs to the technical field of povidone iodine disinfectants, and discloses a povidone iodine disinfectant as well as a preparation method and application thereof. The raw materials comprise 3-6% of chitosan coated povidone iodine, 0.5-2% of a quaternary ammonium salt surfactant, 0.1-1% of potassium iodate, 0.1-0.5% of potassium iodide and the balance of water. The active component is chitosan-coated povidone iodine, firstly, chitosan is modified through oxygen plasma, the amino content of the chitosan is regulated and controlled, the number of oxygen-containing groups is increased, then povidone iodine is coated, and hydrogen bonds are formed between the modified chitosan and povidone iodine, so that a povidone iodine solid is fixed, and the stability of iodine is improved; the macromolecular structure of the chitosan can also play a role in slowly releasing free iodine. And meanwhile, the chitosan also has good biocompatibility and antibacterial activity, is small in irritation when being used for a specific part, and also can achieve an antibacterial effect.

The invention relates to the technical field of sewage treatment, in particular to a sulfur removal agent for sulfur-containing gas field produced water. The sulfur removal agent for the sulfur-containing gas field produced water, provided by the invention, is double interpenetrating network aerogel formed by double interpenetrating cross-linking of molecular chain phases of polyacrylamide and sulfonyl hydrazone modified guar gum. By interpenetrating molecular chains of polyacrylamide and modified guar gum, the obtained double interpenetrating network aerogel not only has the characteristics of polyhydroxy, carbonyl, good salt tolerance and macromolecular structure of guar gum, but also has the characteristics of rigid skeleton and abundant network structure of polyacrylamide; according to the present invention, the electrostatic acting force, the hydrogen-bond interaction, the intermolecular acting force and the adsorption effect among different functional groups such as the amino group, the hydroxyl group and the carbonyl group cooperate with each other, such that the S < 2-> in the weakly acidic or weakly alkaline (pH value is 6.5-9.5) sulfur-containing sewage can be effectively treated, the corrosion to the equipment cannot be caused, and the desulfurization agent is suitable for the desulfurization treatment of the sulfur-containing gas field produced water in different acid-base environments;

The invention discloses a reusable clean fracturing fluid system and a preparation method thereof. When the emulsion is mixed with water, a strong association effect is generated, a high-viscosity weak-elasticity sand-carrying fluid with a net structure is formed, and the proppant is brought into a crack. Under the action of formation temperature, pressure and a gel breaker, the fracturing fluid breaks gel, original macromolecular aggregates cannot be mutually entangled, and a viscoelastic macromolecular structure can be degraded into a micromolecular structure and then flows back to the ground. Therefore, dual protection significance of reservoir protection, environmental protection and the like is realized, and the method has a relatively good application prospect.

The invention provides acne-removing essence cream based on plant extraction components and a preparation method thereof. A macromolecular emulsifier 1 and a macromolecular emulsifier 2 are added into the acne-removing essence cream. The macromolecular emulsifier 1 is a product obtained by esterifying PEG100 stearate and acrylic acid and then carrying out free radical polymerization; the macromolecular emulsifier 2 is a product obtained by esterifying cetearyl glucoside and acrylic acid and then carrying out free radical polymerization on the esterified cetearyl glucoside and acrylic acid. Both the macromolecular emulsifier 1 and the macromolecular emulsifier 2 have macromolecular structures, so that the viscosity of the system can be improved, and meanwhile, a mutually wound network structure is easily formed among macromolecular chains, so that the cohesion of the system can be improved, and the viscosity of the system can be maintained. And on the other hand, a polymerization unit of the macromolecular emulsifier 2 contains a large number of hydroxyl groups, the density of hydrogen bonds after polymerization can be greatly improved, and the macromolecular emulsifier 2 can be more tightly combined with other components, so that the stability of the system is enhanced, and the viscosity of the system can be further stabilized.