153 results about "1-Chloropropane" patented technology

The invention discloses a zinc-bromine flow battery multifunctional bipolar plate and a preparation method and application thereof.The method comprises the steps that polyaniline is added into a cetyltrimethylammonium bromide ethanol solution, after stirring and ultrasonic treatment, a mixed solution is obtained and sprayed to the positive electrode side of a pretreated polypropylene bipolar plate, and after drying, the zinc-bromine flow battery multifunctional bipolar plate is obtained; the polyaniline modified polypropylene bipolar plate is obtained; the preparation method comprises the following steps: dissolving beta-cyclodextrin in a NaOH solution, adding epoxy chloropropane, stirring for reaction, washing to be neutral, drying, grinding and sieving to obtain a cyclodextrin polymer, dispersing the cyclodextrin polymer in a Nafion solution to obtain a cyclodextrin polymer solution, spraying the cyclodextrin polymer solution on the negative electrode side of a polyaniline modified polypropylene bipolar plate, and drying to obtain the multifunctional bipolar plate of the zinc-bromine flow battery. Polyaniline is loaded on the positive electrode side of the bipolar plate to reduce a bromine permeation source and bromine reaction activation energy, a cyclodextrin polymer Nafion solution is used for modifying and stabilizing the pH value of an electrolyte on the negative electrode side, uniform and compact deposition of zinc is promoted, formation of sharp dendrites is reduced, and the electrochemical performance and long-term stability of the battery are improved.

The invention discloses a preparation method of high-viscosity cationic starch, which belongs to the technical field of modified starch, and comprises the following steps: crosslinking epichlorohydrin, ball-milling and cationizing; the epoxy chloropropane crosslinking comprises the following steps: mixing starch, calcium hydroxide and deionized water, stirring at 40-50 DEG C, adding sodium stearoyl lactylate, stirring at 50-55 DEG C, naturally cooling to room temperature, adding sodium chloride and epoxy chloropropane, stirring, dropwise adding a potassium hydroxide aqueous solution, stirring, adjusting the pH value to 6, filtering, taking filter residues, washing and drying to obtain crosslinked starch; in the step of ball milling, calcium hydroxide, sucrose fatty acid ester SE-11 and deionized water are mixed and then subjected to ball milling, and a ball-milled material is obtained; the prepared high-viscosity cationic starch is high in paste liquid viscosity and cationic substitution degree, good in paste liquid viscosity stability, uniform in substitution degree and paste liquid viscosity, high in reaction efficiency in cationization and low in alkali consumption.

The invention belongs to the technical field of catalyst preparation, and particularly relates to a pentachloropropane dehydrochlorination catalyst and a preparation process of tetrachloropropene. The preparation process of the catalyst comprises the following steps: (1) modifying gamma-aluminum oxide powder by adopting an epoxy group-containing silane coupling agent to obtain activated gamma-aluminum oxide powder; (2) dispersing the activated gamma-aluminum oxide powder and polyamino POSS in a solvent, and stirring for reaction to obtain modified gamma-aluminum oxide powder; and (3) preparing trivalent metal salt-loaded modified gamma-alumina powder, and drying to obtain the pentachloropropane dehydrochlorination catalyst. The epoxy group-containing silane coupling agent not only improves the dispersion performance of alumina, but also plays a medium role, so that POSS is attached to the surface of alumina powder, and the stability of the catalyst is improved. Amino groups on POSS are used for complexing trivalent metal ions, and POSS micromolecules can also serve as a transmission track of a substrate, so that the catalytic activity is improved.

The application relates to the technical field of polyester fibers, and discloses a preparation method of antibacterial modified polyester hollow fibers; the preparation method takes nitrilotriacetic acid, chlorosulfoxide, epoxy chloropropane, eugenol and the like as raw materials, and obtains eugenol epoxy quaternary ammonium salt through acyl chloride reaction, quaternary ammonium reaction and esterification. The carboxyl groups in graphene oxide and the epoxy groups in eugenol epoxy quaternary ammonium salt are used to carry out ring-opening reaction, so that modified graphene is obtained; the modified graphene is uniformly mixed with polyethylene terephthalate, and through a series of steps, finally, the antibacterial modified polyester hollow fibers are obtained. The eugenol and quaternary ammonium salt are used to improve the antibacterial performance of the polyester hollow fibers, and the graphene is used to improve the mechanical performance of the polyester hollow fibers. The polyester hollow fibers prepared by the method have excellent mechanical performance and antibacterial performance.

The invention provides a natural polymer shear strength improving agent for temperature-resistant tackifying water-based drilling fluid as well as a preparation method and application of the natural polymer shear strength improving agent. The shear strength improving agent is prepared from the following raw materials in parts by mass: 1 to 7 parts of carboxymethyl starch, 1 to 5 parts of 2-acrylamido-2-methylpropanesulfonic acid, 1 to 5 parts of dimethyl diallyl ammonium chloride, 1 to 5 parts of N-vinyl pyrrolidone, 1 to 5 parts of acrylamide, 0.01 to 0.05 part of an initiator I, 0.01 to 0.05 part of an initiator II, 0.01 to 0.07 part of a cross-linking agent epoxy chloropropane, 50 to 70 parts of water and 150 to 220 parts of absolute ethyl alcohol. According to the shear strength improving agent, natural high polymer materials are used, a polymer net structure is formed through polymerization reaction, the cross-linking agent is used for promoting the net structure to be tighter for tackifying, and the shear strength improving agent has better thermal stability, dynamic shear force, flocculation capacity and suspension stability while the cost and the environmental load are reduced.

The invention provides epoxy resin for halogen-free flame-retardant self-leveling powder coating and a preparation method of the epoxy resin, and belongs to the technical field of powder coating. The flame retardant is mainly prepared from anhydrous piperazine, bisphenol A diglycidyl ether, trihydroxymethyl phosphorus oxide, triethyl phosphite, epoxy chloropropane, sodium hydroxide, N-methyl iminodiacetic acid, ethylene glycol diglycidyl ether and other main raw materials through polymerization. The prepared epoxy resin and 2-phenylimidazoline are subjected to low-temperature curing (135 DEG C / 20 min) on the premise that an additional flatting agent does not need to be used, the flexibility of a coating film is good, the impact resistance grade is high, the impact performance reaches the condition that no cracking phenomenon exists in the front and back 60cm, the leveling grade reaches the grade 7 or above, the gloss is high and reaches 95% or above, the oxygen index reaches 34% or above, and the halogen-free flame retardant performance is excellent.

The invention provides halogen-free flame-retardant liquid epoxy resin, solid epoxy resin for powder coating and a preparation method of the solid epoxy resin, and belongs to the technical field of powder coating. The liquid epoxy resin disclosed by the invention is prepared by polymerizing 2, 4-diamino-6-phenyl-1, 3, 5-triazine, formaldehyde, triethyl phosphite, epoxy chloropropane, sodium hydroxide, DMF (Dimethyl Formamide) and the like. The contents of halogen-free flame-retardant elements nitrogen and phosphorus in the product are high, a solid epoxy resin product obtained by carrying out chain extension on liquid epoxy resin serving as a synthetic monomer of solid epoxy resin of the powder coating and bisphenol F is good in flame retardance, the oxygen index reaches 37% or above, and the flame retardance is high. A coating film obtained after the powder coating and an accelerated dicyandiamide curing agent are subjected to low-temperature rapid curing (150 DEG C / 10 min) is high in gloss and leveling grade and good in impact resistance, hardness and the like, and the application requirements of the powder coating are met.

The invention discloses a method for treating a metal surface through ethylene glycol butyl ether after a fire disaster. The treatment method comprises the following steps that modified ethylene glycol butyl ether is prepared; sequentially adding modified ethylene glycol butyl ether serving as a main chemical solution into the reaction kettle according to the quantitative percentage, and carrying out mixed reaction; standing the mixed chemical solution in the step S2 for 10-20 minutes, and adding water to dilute the mixed solution according to the remaining percentage of the volume of the reaction kettle; the ethylene glycol butyl ether is modified and serves as a main component of the cleaning solution, the sodium phosphate, the epichlorohydrin, the sodium pyrophosphate and the trichloroethylene are mixed according to a proper proportion, a proper amount of water is added for dilution, and the cleaning solution is obtained. Dirt formed by fire disasters on the metal surface can be effectively removed, and metal objects cannot be damaged.

The application relates to the field of epoxy resin modification, in particular to a preparation method of a self-emulsifying epoxy resin. The method overcomes the defects of the prior art, such as the need to add an emulsifier and mechanical stirring for emulsification, easy demulsification, low epoxy value and the like. The preparation method comprises the following steps: firstly, adding a Lewis acid into a mixed solution of polyethylene glycol and epoxy chloropropane to prepare one-side chlorinated polyethylene glycol; secondly, adding bisphenol A into the one-side chlorinated polyethylene glycol system to make the one-side hydroxyl group of the bisphenol A graft with polyethylene glycol through a Williamson ether reaction under the catalysis of alkali; and thirdly, adding epoxy chloropropane into the bisphenol A solution grafted with one-side polyethylene glycol to make the other-side hydroxyl group of the bisphenol A graft with an epoxy group under the catalysis of alkali, so as to prepare the epoxy resin with self-emulsifying effect. The raw materials of the reaction method are cheap and easy to obtain, the method is simple, the toxicity is relatively small, there is no by-product after the reaction is completed, and the environment pollution is relatively small. The reaction raw material utilization rate is high, the yield is high, the method meets the concept of green paint, and can be widely applied to the industrial production fields of paint and material.

The invention provides a method for separating chloropropene and chloropropane, which comprises the following steps of: (1) feeding circulating chloropropene into a coarse distillation tower for distillation separation to obtain chloropropene at the tower top, feeding a mixture flow obtained from a tower kettle into an extractive distillation tower from a feeding hole, performing extractive distillation on the mixture flow and an extracting agent, obtaining chloropropane at the tower top of the extractive distillation tower, and obtaining chloropropane at the tower bottom of the extractive distillation tower; obtaining a mixture flow of chloropropene and the extracting agent from the tower kettle; and (2) sending a mixture flow of chloropropene and the extraction agent obtained from the tower kettle of the extractive distillation tower to an extraction agent recovery tower for recovery, obtaining chloropropene from the tower top and obtaining the extraction agent from the tower kettle, and recycling the extraction agent to the extractive distillation tower. The circulating chloropropene is subjected to coarse rectification, extractive rectification and extraction agent recovery, so that the content of inert components in the circulating chloropropene is reduced, and the subsequent reaction efficiency is improved.

The invention relates to the technical field of fine chemical engineering, and discloses electronic-grade solid naphthyl epoxy resin as well as a preparation method and application thereof.The preparation method specifically comprises the following steps: (1) firstly, adding epoxy chloropropane and isopropanol into dihydroxy dinaphthyl methane of two isomers, and stirring and dissolving to obtain a mixture A; (2) dropwise adding alkali liquor into the mixture A, and carrying out etherification reaction to obtain a mixture B; (3) dropwise adding alkali liquor into the mixture B, carrying out ring-closure reaction, separating liquid and removing salt to obtain an organic phase layer solution C; (4) washing the organic phase layer solution C with water, and performing reduced pressure distillation to obtain an epoxy resin crude product; (5) adding a solvent into the epoxy resin crude product, heating and dissolving, dropwise adding alkali liquor, carrying out refining reaction, separating liquid and removing salt to obtain an organic phase layer solution D; and (6) washing the organic phase layer solution D with water, and carrying out reduced pressure distillation to obtain the alpha-naphthol bifunctional solid epoxy resin. The product disclosed by the invention is low in total chlorine content, high in purity, relatively high in yield and excellent in heat resistance, and can be applied to the fields of epoxy resin molding compounds, semiconductor chip packaging and the like.

The application relates to the papermaking technical field, and particularly discloses a paper pulp papermaking reinforcing agent and a preparation method thereof, which comprises the following raw materials in parts by weight: polyamide epoxy chloropropane resin 10-20 parts, silicon dioxide 1-2 parts, polyvinyl alcohol 1-5 parts, crosslinking agent 0.1-1 part, deionized water 120-150 parts, modifier 0.5-2 parts, wherein the modifier contains fluorine elements, silicon elements and organic amine groups in a molecular structure, and the dry tensile property, the wet tensile property, the folding resistance, the flame resistance and the wet / dry tensile index ratio of the paper pulp reinforcing agent are improved, and the paper pulp papermaking reinforcing agent prepared by the application can be widely applied to paper strengthening and has a wide application prospect.

The invention relates to the technical field of degumming agents, and discloses a preparation process of a degumming agent for a solar photovoltaic silicon wafer. The degumming agent comprises the following components in percentage by weight: 2-8% of tetramethylammonium hydroxide, 3-6% of organic alcohol amine, 0.5-1.5% of alkyl glycoside, 0.2-0.8% of a chelating agent, 0.5-3% of a functional additive and the balance of deionized water, the chelating agent is sodium gluconate; the functional additive comprises a sodium silicate corrosion inhibitor, a thickening agent and a penetrating agent; the preparation method comprises the following steps: S1, adding trimethylamine and epoxy chloropropane into tetrahydrofuran, carrying out stirring reaction at 60-65 DEG C for 8-15 hours, and removing a solvent to obtain a cationized intermediate; s2, adding the cationized intermediate into water, adding sodium carboxymethyl cellulose, uniformly stirring, heating and pressurizing to 120-130 DEG C, stirring and reacting for 8-12 hours, and removing the solvent to obtain the modified sodium carboxymethyl cellulose.

The invention discloses a temperature control reaction kettle for tetrachloropropane production, and relates to the technical field of tetrachloropropane production, the temperature control reaction kettle comprises a kettle body, the top and the bottom of the kettle body are respectively provided with a feed port and a discharge port, the kettle body is internally provided with a stirring assembly, the stirring assembly is rotatably connected with the kettle body, and the stirring assembly is connected with the kettle body. The stirring assembly is composed of a stirring set and a heat exchange set, the heat exchange set is located outside the stirring set, the stirring set is composed of a rotating body and a supporting base, a plurality of conveying pipes are arranged between the rotating body and the supporting base, the heat exchange set comprises a supporting column, the supporting column is provided with two heating rings, and the heating rings are arranged on the supporting column. A circulating pipe is arranged between the two heating rings, ethylene gas is conveyed through a conveying pipe and sprayed out in a rotating mode, revolution is carried out while hot water is conveyed through the spirally-wound circulating pipe, dynamic efficient heat exchange is achieved, ethylene gas in a conveying groove is preheated by the heating pipe in a rotating body, and a stirring plate with an electromagnet is arranged on the outer side of the circulating pipe. The device is used for adsorbing and controlling iron powder.

The invention relates to the technical field of chloropropane automatic water cutting tank cleaning, and discloses a chloropropane automatic water cutting tank automatic cleaning device which comprises a tank body, a flushing mechanism is arranged on the outer surface of the tank body, a vibration mechanism is arranged on the outer surface of the tank body, the flushing mechanism comprises a mounting frame, and a threaded rod is rotationally connected to the interior of the mounting frame; a rotating motor is fixedly mounted on the upper surface of the mounting frame, the top end of the threaded rod is fixedly connected with the output end of the rotating motor, the outer surface of the threaded rod is in threaded connection with a moving plate, a rotating gear is arranged below the moving plate, a conveying pipe is fixedly mounted on the inner wall of the rotating gear, and the rotating motor is fixedly mounted on the bottom surface of the moving plate; and a connecting gear is fixedly mounted at the output end of the rotating motor. According to the automatic cleaning device for the automatic chloropropane water cutting tank, by arranging the flushing mechanism, the problem that dead corners occur in flushing of the interior of the tank body due to the fact that the position of a spray head is fixed is solved, and then the influence on subsequent chloropropane water cutting is avoided.

This invention relates to "a method for synthesizing monobromotrifluoropropylene," belonging to the field of organic chemical synthesis. In this method, pentachloropropane (CCl3-CH2-CHCl2), bromine gas (Br2), and anhydrous hydrogen fluoride (HF) are reacted with a fluorination catalyst to generate monobromotrifluoropropylene (CF3-CBr=CH2) in the gas phase. This invention utilizes inexpensive and readily available raw materials; the product separation and purification are simple; it is easy to industrialize; and it generates minimal industrial waste.

The invention provides a fluorination catalyst composition, a preparation method and application thereof, and a method for catalyzing 1, 1, 1, 3, 3-pentachloropropane to generate E-1-chloro-3, 3, 3-trifluoropropene, and belongs to the field of materials. The fluorination catalyst composition comprises a main catalyst and a third metal element loaded on the main catalyst, wherein the main catalyst is biomass charcoal simultaneously modified by a first metal element and a second metal element; wherein the first metal element comprises at least one of rare earth metal elements; the second metal element comprises at least one of Zr, Nb, Mo, V, Fe, Mn, Ti, Hf, Ga, In and Sn; the third metal element comprises at least one of Mg, Ca, Ba and Sr. The fluorination catalyst composition provided by the invention can efficiently catalyze 1, 1, 1, 3, 3-pentachloropropane to generate a gas phase fluorination reaction to generate E-1-chloro-3, 3, 3-trifluoropropene, has the advantages of high conversion rate, strong selectivity, long service life and the like, and is suitable for wide application.

The application discloses a method for preparing epichlorohydrin, which comprises the following steps: reacting a mixture containing chloropropene, hydrogen peroxide, polyhydric alcohol, a catalyst and an ionic surfactant in a batch kettle reactor to obtain a product containing epichlorohydrin. Compared with the traditional method, the reaction has less by-products, the product after the reaction of hydrogen peroxide is water, the addition of the ionic surfactant and the polyhydric alcohol promotes the mixing of the organic phase and the aqueous phase into a homogeneous phase, improves the selectivity, a large amount of solvent does not need to be added, solvent evaporation and recovery processes are avoided, the process is energy-saving and environment-friendly, the equipment process is simple, the yield and the selectivity are high, the method is suitable for large-scale production in industry, has great economic benefits, solvent evaporation and recovery are not needed, is beneficial to the production amplification in industry, the equipment maintenance cost is low, the system cost is relatively low, the environmental pollution is small, the operation is simple, the method is easy to repeat, and epichlorohydrin can be efficiently produced.

The application relates to a symmetrical zwitterion salt containing a double-sulfonimide structure and a synthesis method and application, and comprises the following steps: adding imidazole, a first 3-chloropropane sulfonamide (trifluoromethylsulfonyl) imide salt and a first MOH into a first organic solvent, carrying out a single grafting reaction under anhydrous and anaerobic conditions, filtering, rotary evaporating and drying to obtain a first product; adding a second 3-chloropropane sulfonamide (trifluoromethylsulfonyl) imide salt and MI into a second organic solvent, carrying out iodination reaction, standing and centrifugal separation to obtain supernatant containing a second product; mixing the supernatant and the first product to carry out secondary grafting reaction, and carrying out post-treatment to obtain the symmetrical zwitterion salt containing the double-sulfonimide structure. In the symmetrical zwitterion salt, the propylsulfonamide (trifluoromethylsulfonyl) imide groups are connected on both sides of the delocalized N atom, which is more conducive to cation dissociation, and the imidazole is used as a central group, the reaction activity is stronger, the internal salt is easy to form, and the yield is improved.

The invention belongs to the field of pharmaceutical chemical engineering and fine chemical engineering, and relates to a method for recovering 2-cyano-2-methylvaleric acid as shown in a chemical structural formula I. The method comprises the following steps: selecting methyl 2-cyanoacetate and 1-chloropropane, and carrying out catalytic dipropylation under the action of potassium carbonate to prepare methyl 2-cyano-2-valproate; hydrolyzing the latter to obtain 2-cyano-2-valproic acid (crude product) as shown in a formula III; adding water, alcohol and other polar solvents into the 2-cyano-2-valproic acid crude product, pulping, carrying out gradient crystallization, filtering, and carrying out low-temperature vacuum drying to obtain 2-cyano-2-valproic acid monohydrate and 2-cyano-2-methylvalproic acid monohydrate; the 2-cyano-2-valproic acid monohydrate is subjected to high-temperature decarboxylation hydrolysis through sulfuric acid, and valproic acid is prepared; and carrying out high-temperature decarboxylation hydrolysis on the 2-cyano-2-methylpentanoic acid monohydrate by using sulfuric acid to obtain the essence 2-methylpentanoic acid.

Minimum-boiling, heterogeneous azeotropic and azeotrope-like compositions including 1,1,2,2,3-pentachloropropane (HCC-240aa) and hydrogen fluoride (HF), as well as methods for using these azeotropic or azeotrope-like compositions in the production of trifluorochloropropenes.

The application discloses a synthesis method of pentachloropropane based on raw materials of vinyl chloride and carbon tetrachloride, and belongs to the technical field of new chemical materials. Main steps include raw material proportioning and pretreatment, nano-catalytic reaction, product initial extraction and purification, etc. The catalyst used is prepared by loading the composite of ferrous chloride and nano iron oxide on a mesoporous carbon carrier, and has excellent catalytic performance. The product is purified through vacuum distillation and an activated carbon adsorption column, and the purity can reach more than 99.7%. The method innovatively combines nano technology and specific reaction conditions, and has the advantages of high yield, high product purity and good catalyst stability. Compared with the traditional synthesis method, the technology significantly improves the production efficiency and reduces the energy consumption, provides an innovative and practical technical path for the industrial production of pentachloropropane, and has a wide application prospect.

The invention discloses a polycationic surfactant FCWS as well as a preparation method and application thereof, and belongs to the technical field of oilfield chemical assistants. The preparation method comprises the following steps: S1, dissolving 1, 5-diaminopentane in ethanol, adding epoxy chloropropane, and reacting at 25 DEG C for 24 hours to obtain an ethanol solution of an intermediate A; s2, an ethanol solution of the intermediate A and a dimethyl tertiary amine organic matter react for 36-48 h at the temperature of 80 DEG C, and the polycationic surface active agent FCWS is obtained. According to the invention, the prepared polycationic surfactant is adopted to modify the proppant, the settling velocity of the proppant is reduced, the proppant with excellent suspension capacity is obtained, and the proppant with excellent performance is provided for a reservoir yield-increasing transformation technology. The method is suitable for modifying the silicon dioxide-containing proppant.

The invention relates to a method for resource utilization of 1, 1, 2-trichloropropane, and the method comprises the following steps: (1) carrying out high-temperature cracking on a material flow containing 1, 1, 2-trichloropropane to obtain a material flow containing 3, 3-dichloropropene; and (2) carrying out chlorination on the material flow containing 3, 3-dichloropropene to obtain a material flow containing 1, 1, 2, 3-tetrachloropropane. According to the method disclosed by the invention, the propylene chlorination by-product 1, 1, 2-trichloropropane can be subjected to high-temperature cracking to obtain 3, 3-dichloropropene, and 1, 1, 2, 3-tetrachloropropane is obtained after the 3, 3-dichloropropene is chlorinated. The byproduct 1, 1, 2-trichloropropane is fundamentally solved, the process route is simple, the flow is short, the reaction conversion rate is high, the selectivity is good, and industrial implementation is facilitated.

The present application relates to the preparation method of magnesium valproate shown in chemical structural formula I: under the action of potassium carbonate and PTC, dimethyl malonate is subjected to dipropylization with 1-chloropropane in DMF solvent to prepare dimethyl dipropyl malonate shown in formula III; III is subjected to hydrolysis reaction to prepare dipropyl malonic acid shown in formula II; II is uniformly mixed with magnesium oxide, and heated to prepare magnesium valproate shown in formula I by decarboxylation, and the total yield of magnesium valproate is not less than 90.0%; the preparation reaction is as follows: wherein, the PTC for dipropylization is selected from quaternary ammonium salt, the reaction temperature is 50-140 DEG C, the reaction time is 4.0-14.0 h; the hydrolysis temperature is 70-95 DEG C, the time is 2.0-4.0 h; the decarboxylation temperature is 140-158 DEG C, and the time is 3.0-5.0 h.

The application discloses a kind of hydroxyl fluorine alkyl aromatic hydrocarbon derivatives modified binder and its preparation method and application, the binder is prepared by crosslinking of acrylic acid, epoxide chloropropane and p-hydroxy trifluoroalkyl styrene.The lipophilic group trifluoroalkyl and hydrophilic group hydroxyl (can form hydrogen bond between slurry) in the binder of the application, so that the hydrophobicity of polymer to slurry is regulated, can significantly improve the adhesion between binder and active material.The branched chain of the binder of the application enhances the structural stability of molecule, and increases the viscosity and suspensibility of slurry, so that when it is applied as binder in lithium battery negative electrode, electrode structure becomes more stable.

The invention discloses regenerated high-strength corrugating base paper, a preparation method thereof and a corrugated board for shoe boxes. The preparation method of the corrugating base paper comprises the steps that waste paper pulp is subjected to enzyme modification treatment and pulped, and then cationic starch, a polyamide epichlorohydrin wet strength agent, carboxylated cellulose nanocrystals and alkyl ketene dimer are added and mixed to obtain corrugated paper primary pulp; carrying out papermaking forming on the corrugated paper primary pulp, and carrying out squeezing dehydration and drying to obtain shaped paper; a reinforcing sizing material is applied to the surface of the sizing paper, and the sizing paper is dried and calendered to obtain corrugated base paper; the reinforced sizing material is prepared from 80 to 90 parts of a film-forming reinforcing agent, 3 to 5 parts of carboxylated reduced graphene oxide dispersion liquid, 1 to 2 parts of a carbodiimide cross-linking agent, 1 to 5 parts of a borate coupling agent and 5 to 8 parts of polydimethylsiloxane; the film-forming enhancer comprises a styrene-acrylic emulsion and a carboxylated styrene-butadiene emulsion, so that the obtained corrugating base paper has high strength and excellent moisture resistance, and is suitable for being made into a corrugated board for a shoebox.

The application discloses an anti-aging luggage cloth and a preparation method thereof. Polyethylene imine is mixed into PVC in a blending mode to obtain a PVC blending film. Water in the polyethylene imine aqueous solution plays a role of a pore forming agent in the film forming process. The volume originally occupied by water molecules forms a pore structure, which is beneficial to the subsequent loading of titanium dioxide and 2-mercaptobenzimidazole, improves the loading capacity, and further improves the anti-aging performance of the luggage cloth. Titanium acid tetraisopropyl ester and 2-mercaptobenzimidazole are added into an ethanol solution to avoid the direct addition of titanium dioxide powder and 2-mercaptobenzimidazole, and the problem of easy agglomeration. The titanium dioxide and 2-mercaptobenzimidazole jointly improve the anti-aging performance of the cloth. Then, under the action of a crosslinking agent, epoxy chloropropane, the titanium dioxide and 2-mercaptobenzimidazole are firmly attached to the PVC film and are not easy to fall off. After multiple water washing, the luggage cloth still has good anti-aging performance.

The utility model discloses a reaction system for continuously preparing pentachloropropane and tetrachloropropane, which comprises a reaction kettle, a heat exchanger, a static mixer and a Venturi ejector which are connected in sequence, the reaction kettle comprises a reaction kettle body, a stirring device, a magnetic attraction device and a cooling and heating device, wherein the stirring device, the magnetic attraction device and the cooling and heating device are respectively arranged on the reaction kettle body. According to the utility model, iron powder is skillfully fixed in the reaction kettle and is uniformly distributed, so that a larger contact area between liquid and solid phases is provided, the formation of a divalent iron complex is accelerated, and an effective catalyst is supplemented for a reaction system in time. A large amount of circulating liquid can quickly remove reaction heat, and after newly added carbon tetrachloride and auxiliaries are uniformly mixed, vinyl chloride or ethylene gas is uniformly dissolved in the circulating liquid through the venturi ejector, so that the vinyl chloride or the ethylene gas reacts quickly.