37 results about "Tributyl citrate" patented technology

The invention discloses a biodegradable polylactic acid composite material and a preparation method thereof, and relates to the technical field of polylactic acid materials. The method comprises the steps that firstly, chitosan activated through hydrochloric acid is subjected to graft modification through a KH550 silane coupling agent, meanwhile, nano-zinc oxide is subjected to surface modification through stearic acid, the chitosan and the nano-zinc oxide are mixed, spray drying is conducted, and antibacterial composite powder is prepared; the preparation method comprises the following steps: performing hydrochloric acid activation and KH570 silane coupling agent modification on nano silicon dioxide, performing hydroxypropylation modification on alkali lignin, and performing reflux crosslinking reaction on the modified alkali lignin, KH570 modified nano silicon dioxide, polycaprolactone, methyl methacrylate and azodiisobutyronitrile to prepare a heat-resistant reinforcer; uniformly mixing polylactic acid, poly (butylene succinate), the antibacterial composite powder, the heat-resistant reinforcer, tributyl citrate, polyethylene glycol and talcum powder, and extruding and granulating by using a twin-screw extruder to obtain the heat-resistant antibacterial material. The composite material prepared by the invention has excellent antibacterial property, heat resistance and biodegradability.

The invention discloses a recycled PP composite material with flame-retardant and antibacterial properties and a preparation method thereof, and relates to the technical field of recycled PP composite materials. The recycled PP composite material with flame-retardant and antibacterial properties is prepared from the following raw materials in parts by weight: 60 to 75 parts of recycled PP, 15 to 25 parts of modified magnesium hydroxide, 3 to 8 parts of modified chitosan, 2 to 5 parts of ethylene-vinyl acetate copolymer, 0.5 to 1.5 parts of silane coupling agent KH-550, 8 to 15 parts of ammonium polyphosphate, 0.3 to 0.8 part of calcium stearate, 1 to 3 parts of nano titanium dioxide and 0.2 to 0.6 part of tributyl citrate. The recycled PP composite material has the remarkable advantages that the recycled PP is used as a base material, so that the environment is protected and the cost is low; through compounding of modified magnesium hydroxide, modified chitosan and the like, the flame-retardant antibacterial coating has excellent flame-retardant and antibacterial properties; the preparation process is clear and controllable, the raw material compatibility is scientific, the compatibility of the components is good, the product performance is stable, and the application prospect is wide.

The present application relates to the technical field of feed additive, and discloses a lactation-promoting functional feed for lactating sows containing high-efficiency plant lactogenic factors, which is made of the following raw materials: sodium-based montmorillonite, fenugreek extract, motherwort extract, ion intensity regulator, lysophosphatidylcholine, tributyl citrate and high-purity silicon dioxide, and is prepared through the following steps: mixing and drying sodium-based montmorillonite with the ion intensity regulator to prepare a regulation carrier; adding fenugreek and motherwort extract and mixing them by strong shearing to form an active core; atomizing and spraying a mixture of lysophosphatidylcholine and tributyl citrate on the surface of the core to form a functional layer; and finally adding high-purity silicon dioxide and mixing uniformly to obtain the feed. Through the construction of the structure with ion-pretreated montmorillonite as the core and the functional layer as the shell, the present application realizes the protection, sustained release and efficient absorption of the active ingredients, and improves the bioavailability.

The invention discloses a preparation method of an efficient fireproof and flame-retardant coating for wires and cables, and belongs to the technical field of wire and cable coatings. Aiming at the defects of low flame-retardant efficiency, poor high-temperature-resistant stability and insufficient environmental protection property of the existing coating, performance breakthrough is realized through an innovative formula and process design. The flame-retardant coating comprises the following components in parts by weight: 30-40 parts of acrylate resin, 20-30 parts of a composite flame-retardant system (compounded by modified magnesium hydroxide, ammonium polyphosphate and pentaerythritol phosphate according to a ratio of 5: 3: 2), 1.5-3 parts of a high-temperature-resistant modified component, 4-6 parts of an environment-friendly coalescing agent (compounded by polyethylene glycol monomethyl ether and tributyl citrate according to a ratio of 1: 1), other auxiliaries and deionized water. The preparation method comprises the steps of raw material pretreatment, stepped stirring and mixing, and grinding by a sand mill. The flame-retardant grade of the prepared coating reaches grade A, the coating is free of cracking and falling at the high temperature of 1300 DEG C, VOC is smaller than or equal to 10 g / L, no heavy metal is detected, meanwhile, the adhesive force reaches grade 1, the flexibility is larger than or equal to 0.8 mm, the problem that multiple properties are difficult to consider in the prior art is solved, and the coating is suitable for coating of various high-low voltage electric wires and cables.

This invention discloses an antistatic and high-toughness plastic packaging film and its preparation method, belonging to the field of polymer composite materials technology. The packaging film uses linear low-density polyethylene as the matrix resin, compounded with carbon nanotubes modified by methanesulfonic acid activation, silane coupling agent KH-570 grafting, and PEG-PLA block copolymer, supplemented with antioxidants, lubricants, and tributyl citrate. In the preparation process, the carbon nanotubes are first mildly acidified and activated, and then modified with multiple components. The raw materials are then premixed, extruded using a twin-screw extruder, and formed using casting stretching or blown film processes. This invention solves the problem of carbon nanotube agglomeration through composite modification, improving its interfacial bonding with the matrix, and reducing the surface resistivity of the resulting packaging film to 4×10⁻⁶. 7 With an Ω·cm content, it combines excellent antistatic properties with high toughness, overcoming the shortcomings of traditional carbon nanotube modified packaging films where antistatic and mechanical properties are difficult to coordinate, and is suitable for packaging fields such as food and electronic components.

This invention discloses a biodegradable polylactic acid (PLA) composite material and its preparation method, relating to the field of PLA material technology. The method includes: firstly, grafting and modifying hydrochloric acid-activated chitosan with KH550 silane coupling agent, and simultaneously surface-modifying nano-zinc oxide with stearic acid; then mixing and spray-drying the two to obtain an antibacterial composite powder; secondly, activating nano-silica with hydrochloric acid and modifying it with KH570 silane coupling agent, and hydroxypropylating modifying alkali lignin; then performing a reflux crosslinking reaction with KH570-modified nano-silica, polycaprolactone, methyl methacrylate, and azobisisobutyronitrile to obtain a heat-resistant reinforcement; finally, uniformly mixing PLA, polybutylene succinate, the antibacterial composite powder, the heat-resistant reinforcement, tributyl citrate, polyethylene glycol, and talc, and granulating the mixture using a twin-screw extruder to obtain the final product. The composite material prepared by this invention possesses excellent antibacterial properties, heat resistance, and biodegradability.

The invention relates to the field of wire harness films, and discloses an automobile wire harness film containing an environment-friendly flame retardant and a preparation method thereof.The wire harness film is prepared from polyvinyl chloride resin, a calcium-zinc stabilizer, an antioxidant tetra [beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, an antioxidant tris (2, 2, 6-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5- The high-temperature-resistant plastic is prepared from 2, 4-di-tert-butylphenyl) ester, polyethylene wax, acetyl tributyl citrate, modified aluminum hydroxide, ammonium polyphosphate, maleic anhydride grafted ethylene-vinyl acetate and toner. The modified aluminum hydroxide is prepared from gamma-aminopropyltriethoxysilane, an ethanol water solution, acetic acid and powdery aluminum hydroxide. The flame-retardant insulating material has relatively good flame retardance, insulating property and mechanical property.

The application relates to the technical field of degradable materials, and discloses an environment-friendly degradable polylactic acid straw and a preparation process thereof; the process comprises the following operation steps: step 1: chitosan is added into a mixed solution, uniformly mixed, amino-wood fiber-water solution and glutaraldehyde water solution are added, uniformly mixed, the pH is adjusted to 6.5-7, reaction is carried out at 40-45 DEG C for 2.5-3 hours, and then washing, drying and modification wood fiber are obtained; step 2: (1) modified polylactic acid, polyhydroxyalkanoate, modified wood fiber, tributyl citrate and triglyceride are uniformly mixed, and then dense mixing, discharging and crushing are carried out to obtain a composite master batch; (2) the composite master batch is sequentially subjected to extrusion forming, cooling and shaping and cutting to obtain the degradable polylactic acid straw.

This invention discloses a non-phosphorus ethylene cracking furnace coking inhibitor, its preparation method, and its application, applicable to the field of ethylene production technology. The inhibitor comprises the following components by weight percentage: dimethyl dithioaminodiethyl ester (7-32%), tributyl citrate (25-45%), dioctyl maleate (15-35%), pentaerythritol tetraisostearate (10-25%), sorbitan monooleate (5-20%), dioctyl adipate (3-15%), and butyl stearate (1-10%), as well as an organic solvent (a mixture of ethylene glycol ethyl ether, ethylene glycol butyl ether, propylene glycol methyl ether, isopropanol, and n-butanol), and is completely free of phosphorus. This inhibitor effectively prevents catalytic coking and inhibits gas-phase polymerization reactions through a dual mechanism of "physical shielding + chemical inhibition." Compared with existing coking suppression methods, this invention has higher coking suppression efficiency, less equipment corrosion, excellent storage stability, and environmental safety, making it suitable for various ethylene plants.

The invention discloses a reversible temperature-variable thermosensitive express waybill for cold-chain logistics, which comprises a base material layer and a composite thermosensitive coating coated on the surface of the base material layer, the base material layer is prepared from the following components in parts by mass: 30 to 45 parts of polyethylene-polylactic acid copolymer, 5 to 12 parts of modified nano montmorillonite, 10 to 18 parts of polybutylene adipate, 0.5 to 2 parts of antioxidant 1010 and 2 to 5 parts of plasticizer tributyl citrate; according to the invention, multiple innovative components are introduced to construct a composite thermosensitive coating system, so that reversible response to temperature change is realized, the color change cycle stability is excellent, temperature fluctuation in a cold-chain transportation process can be repeatedly monitored, and the defect of irreversible color change of an existing thermosensitive surface sheet is overcome; wherein the hydroxylated rare earth-organic ligand complex and the color former have a synergistic effect, so that the surface sheet presents obvious color change in different temperature intervals (for example, the surface sheet is dark blue at-18 DEG C or below, is light blue at 0-8 DEG C and is colorless at normal temperature), the temperature response sensitivity is high, and the color change response time is less than or equal to 5 seconds.

This utility model belongs to the field of chemical catalyst production technology, and particularly relates to a rapid acylation device for tributyl citrate, comprising: an acylation tank, a top cover fixedly installed on the top surface of the tank, a rotating tube rotatably installed between the top cover and the acylation tank, multiple second stirring rods fixedly installed on the outer wall of the rotating tube, two stirring columns fixedly installed on each side of the rotating tube, and a side groove opened on one side of each of the four stirring columns, a motor fixedly installed on the bottom surface of the acylation tank, the top end of the motor output shaft being fixedly connected to the bottom end of the rotating tube, the raw material being injected into the acylation tank through a feeding trough, and a sealing cover being fitted into the feeding trough to ensure a seal on the top cover, the motor being started to drive the rotating tube to rotate, and the stirring columns, second stirring rods, first stirring rods, and connecting rods stirring the raw material inside the acylation tank when the rotating tube rotates, thereby accelerating the acylation effect.

The present application relates to the technical field of packaging materials, in particular to a food-grade composite packaging material with air permeability and waterproofness and a production process thereof.The food-grade composite packaging material comprises a polypropylene waterproof layer, a microporous air-permeable layer, a polyvinylidene fluoride contact layer and a polyurethane adhesive binder; the microporous air-permeable layer comprises the following components: 40-60 parts by weight of polyvinyl alcohol modifier, 10-20 parts by weight of ammonium bicarbonate pore former, 2-5 parts by weight of tributyl citrate plasticizer, 0.5-2 parts by weight of butylated hydroxyl anisole antioxidant, 1-3 parts by weight of sodium dodecyl sulfate surfactant and 5-10 parts by weight of epoxy resin crosslinking agent; polyvinyl alcohol is selected as a base material, cellulose nanocrystals are selected as a particle filler, and 3-glycidyl ether oxypropyl trimethoxysilane is selected as a grafting modifier.The microporous air-permeable layer allows oxygen, carbon dioxide and other gas molecules to selectively permeate through the microporous structure formed by the pore former, maintains the gas exchange inside the package, prolongs the shelf life of food, and at the same time maintains the integrity of the package.

The present application relates to the technical field of shoes, and provides an environment-friendly mosquito-repelling slipper and a production process thereof, which comprises the following steps: preparing the mosquito-repelling slipper by in-mold foaming of a composition, wherein the composition comprises the following components in parts by weight: 40-50 parts of type 3 polyvinyl chloride resin, 20-25 parts of tributyl citrate, 5-15 parts of dioctyl terephthalate, 1-3 parts of calcium carbonate, 1-1.5 parts of industrial soda foaming agent, 0.5-1 part of expanded microspheres, 0.3-0.5 part of internal lubricant, 0.3-0.5 part of external lubricant, 15-20 parts of mosquito-repelling traditional Chinese medicine powder and 2-3 parts of flame retardant. The present application solves the problems of the existing mosquito-repelling slippers, such as the non-ideal mosquito-repelling effect and the short mosquito-repelling duration.

The application discloses an easy-to-apply single-component polyurethane waterproof coating and a preparation method thereof, and belongs to the technical field of waterproof coatings. The raw materials of the easy-to-apply single-component polyurethane waterproof coating disclosed by the application include polyhydric alcohol, plasticizer, solid filler, isocyanate, catalyst and solvent; the polyhydric alcohol includes polyether dihydric alcohol and polyether trihydric alcohol; the plasticizer includes acetyl tributyl citrate; and the catalyst includes bismuth neodecanoate catalyst and dimorpholine diethyl ether catalyst. The easy-to-apply single-component polyurethane waterproof coating disclosed by the application replaces the traditional plasticizer chlorinated paraffin with acetyl tributyl citrate, and the bismuth neodecanoate catalyst and the dimorpholine diethyl ether (DMDEE) catalyst are compounded, so that the viscosity of the waterproof coating is effectively reduced, the construction is facilitated, and meanwhile, the drying speed of the waterproof coating is improved.

The application relates to the technical field of high-molecular environmentally-friendly materials, in particular to a biodegradable mulching film and a preparation method thereof. The preparation method comprises the following steps: uniformly stirring and mixing polybutylene succinate, polyhydroxyalkanoate, modified mica sheet powder, tributyl citrate, salicylic acid and 2,4,6-trimethyl-2,4,6-triphenylcyclotrisiloxane, melting and plasticizing the mixture in a screw extruder, extruding through a ring-shaped die, filling dry air into the center of the die, and simultaneously stretching the extruded high-temperature melt in the transverse and longitudinal directions through the cooperation of the cooling air ring installed at the die part, finally leading out through the traction device on the upper part of the rack, and then leading into the winding device to wind the finished product. The biodegradable mulching film has excellent barrier properties, good soil heat preservation effect and water evaporation prevention effect in the soil.

The application provides a preparation method of ultrasonic-bondable degradable water-jet non-woven fabric, and relates to the technical field of non-woven fabric preparation.The method comprises the following steps: uniformly mixing low-melting-point polybutylene succinate, polyphosphate and tributyl citrate to obtain material A; melting material A and high-melting-point polylactic acid by two screws of a two-component spinning machine respectively, spinning to obtain PLA / PBS composite fibers with a core-sheath structure, drying, and then cutting into PLA / PBS composite short fibers with a core-sheath structure; mixing the obtained composite short fibers with cellulose fibers, and using a web former to form a fiber web; treating the obtained fiber web by a high-pressure water-jet machine to obtain a water-jet fiber web; and drying to obtain the degradable water-jet non-woven fabric.The application uses the core-sheath PLA / PBS composite fibers, and the ultrasonic-bondable characteristic of the fibers can effectively bond the cellulose fibers and the bio-based fiber together, so that a new type of non-woven fabric with high strength, low labor cost and ultrasonic-bondability is formed.

The application discloses a degradable polyester plastic film and a preparation method thereof, which comprises the following raw materials and weight parts: PBAT resin 60-75 parts, polylactic acid 37-50 parts, PBS resin 14-23 parts, polycaprolactone 10-15 parts, glycidyl methacrylate grafted polylactic acid copolymer 5-10 parts, inorganic filler 5-10 parts, tributyl citrate 2-4 parts, chain extending compatibilizer ADR 1-2 parts, composite coupling agent 0.3-0.7 parts, dispersant 0.5-1 part and antioxidant 0.5-1 part. The degradable polyester plastic film has excellent toughness, strength and barrier property, and can be well applied in the field of packaging materials.

The invention relates to the technical field of packaging materials, in particular to an environment-friendly biodegradable plastic packaging material and a preparation method thereof.The environment-friendly biodegradable plastic packaging material is prepared from, by weight, polylactic acid, polybutylene adipate, modified bamboo fiber powder, polyethylene glycol, tributyl citrate and nano-hydroxyapatite; according to the technical scheme, due to the fact that the bamboo fiber powder modified in multiple steps is adopted, surface impurities and part of lignin are removed through alkali treatment, then the binding force between the bamboo fiber powder and a polymer matrix is enhanced through silane coupling agent modification, fiber surface active sites are further increased through follow-up plasma activation, and the surface activity of the bamboo fiber powder is improved. The compatibility of the bamboo fiber powder and a polylactic acid matrix is thoroughly improved through final polylactic acid grafting coating, so that the bamboo fiber powder can be uniformly dispersed in the matrix, the reinforcing and toughening effects of the bamboo fiber powder are fully exerted, and the problems that traditional natural fibers are prone to agglomeration and poor in combination with the matrix are solved.

The invention belongs to the technical field of heating bodies, and particularly relates to a process for preparing a heating body based on a powder injection molding method. The preparation method comprises the following steps: mixing metal oxide powder and a dispersing agent, and drying to obtain premixed powder; mixing the premixed powder with a binder, and granulating to obtain injection particles; carrying out injection molding on the injection particles to obtain an injection molding green body; degreasing and sintering the injection molded green body to obtain a heating body; wherein the raw materials of the metal oxide powder comprise lanthanum oxide, strontium carbonate and manganese oxide; the binder is prepared from several raw materials of paraffin, high-density polyethylene, stearic acid, hydrogenated rosin glyceride, polycaprolactone, acetyl tributyl citrate, sorbitan monooleate and an antioxidant; the dispersing agent comprises oleic acid and / or sorbitan monooleate. The heating body prepared by the invention is relatively high in heating rate; the thermal shock resistance is better.

The application relates to the field of medical dressings, in particular to a waterproof liquid band-aid and a preparation method thereof, which comprises xylan esterification derivatives, polyvinyl alcohol, castor oil, chitin / carbon nanoparticle microspheres, polyphenol substances, allicin, acetyl tri-butyl citrate, glycerol and a solvent. The liquid band-aid prepared by the application has excellent waterproof and breathable properties after film formation, and the tensile strength is greater than or equal to 8.90 MPa, and the mechanical properties and the antibacterial properties are excellent.

The application discloses a straw cellulose modified composite material and a preparation method and application thereof, and belongs to the technical field of environment-friendly composite materials. The composite material is composed of modified straw cellulose, polylactic acid, tributyl citrate, calcium stearate, titanium nitride, a compatilizer and an antioxidant. The modified straw cellulose is obtained by the reaction of straw cellulose as a biomass conversion material with a silane coupling agent and amino chitosan. The silane coupling agent is used to construct the covalent bond between the straw cellulose and the polylactic acid, and the firm grafting and fixing of chitosan on the straw cellulose is realized through an amide bond, so that the problems of weak interface bonding force of each component in the composite material and easy loss of the loaded antibacterial agent are solved synchronously, the composite material is suitable for the preparation of daily necessities such as toothbrush handles, and meets the requirements of environmental protection and industrial production, and has a wide application prospect.

This application discloses a process for fabricating ultra-large MIM hardware, comprising: mixing metal powder and binder in a mixer to form a feedstock; injecting the feedstock into a mold cavity for pressure holding, cooling and demolding to obtain an ultra-large MIM hardware blank; degreasing the ultra-large MIM hardware blank to obtain a blank; and placing the blank in a sintering furnace for partial pressure sintering. The binder comprises, by mass ratio, 85%-91% polyoxymethylene, 2%-5% polyethylene glycol, 2%-3% polypropylene wax, 1%-2% high-density polyethylene, 0.5%-1% nano-SiO2 double-grafted material, 0.5%-1.5% polyethylene wax, 0.5%-1.5% 2,6-di-tert-butyl-p-cresol, and 1%-3% low molecular weight polycaprolactone. The nano-SiO2 double-grafted compound consists of nano-SiO2 first grafted with tributyl citrate and then grafted with polyethylene wax. After grafting, the tributyl citrate segments improve the feed flowability and extensibility, and promote the dispersion of nano-SiO2. The polyethylene wax segments can enhance the interfacial compatibility between nano-SiO2 and non-polar components such as polypropylene wax and high-pressure polyethylene. After degreasing, the nano-SiO2 particles inhibit pore expansion and support atomic diffusion in the early stage of sintering.

The invention relates to the technical field of pharmaceutical preparations, and particularly discloses a refreshing and anti-fatigue traditional Chinese medicine composition and a preparation method thereof. The invention discloses a refreshing and anti-fatigue traditional Chinese medicine composition. Comprising succinylated pachymaran, an ethyl cellulose aqueous dispersion, acetyl tributyl citrate, polyoxyethylene sorbitan monooleate, an ethanol aqueous solution, chitosan oligosaccharide, ginsenoside Rg1 nano-micelles, polyvinylpyrrolidone, deionized water, pseudo-ginseng powder, ginseng powder, a pachymaran extract, a Chinese wolfberry fruit polysaccharide extract and a lotus plumule alkali extract. The composition is prepared from microcrystalline cellulose, cross-linked povidone, colloidal silicon dioxide and magnesium stearate. According to the refreshing and anti-fatigue traditional Chinese medicine composition disclosed by the invention, the inner layer directly forms a nano-fiber net film with an ultra-large specific surface area on the surface of the tablet core through an electrostatic spinning technology, and the nano-fiber net film can generate an extremely strong capillary action after meeting water, so that a rapid disintegration effect is realized.

The invention provides a modified TPU (thermoplastic polyurethane) supercritical foaming sole material and a preparation method thereof, and the modified TPU supercritical foaming sole material is prepared from the following raw materials in parts by mass: 50 to 90 parts of aliphatic polyether polyurethane, 10 to 50 parts of aliphatic polyester polyurethane, 2 to 6 parts of polyethylene oxide-b-polycaprolactone, 0.5 to 2.5 parts of nano organic montmorillonite and 0.2 to 1.0 part of polyether modified siloxane foam stabilizer. 0.4 to 1.0 part of a fatty acid ester lubricant and 1.0 to 2.0 parts of a tributyl citrate plasticizer. The raw materials are firstly subjected to injection molding to form a cold blank, then are foamed at high pressure and high temperature through supercritical carbon dioxide and nitrogen blended fluid, and finally are subjected to secondary compression molding, so that the prepared sole material can meet excellent rebound resilience, energy regression rate, compression performance and layered tearing performance under extremely light and soft conditions, and belongs to a leading level in the industry.

The invention discloses a high-compatibility starch-based biodegradable plastic and a preparation method of the high-compatibility starch-based biodegradable plastic. The degradable plastic comprises the following raw materials: 50 to 70 parts of thermoplastic starch, 30 to 60 parts of polylactic acid, 10 to 40 parts of PBAT and / or PBS, 0.5 to 10 parts of acetyl tributyl citrate, 5 to 15 parts of a plasticizer, 3 to 10 parts of a flexibilizer, 0.5 to 10 parts of polyethylene glycol, 2 to 10 parts of a compatilizer auxiliary agent, 1 to 3 parts of a degradation accelerator, 0.3 to 2 parts of a lubricant, 0.5 to 3 parts of a hydrolysis assistant, 0.5 to 2 parts of a grafting connecting agent, 2 to 15 parts of an inorganic filler, 3 to 8 parts of a compatibilizer and 0.05 to 0.5 part of an antioxidant. And 0.5 to 10 parts of a nano filler. The method has the advantages that the comprehensive mechanical property of the material is improved, the application range of the material is widened, the thermal stability of the material is improved, and the rigidity and dimensional stability of the material are improved.

The invention discloses a chlorination reaction process in a sucralose preparation method, which comprises the following steps: reacting N-formyl-2-cyanopyrrolidine and oxalyl chloride in an acetylated tributyl citrate solvent under the reaction condition of 0-10 DEG C, and filtering, washing and drying after the reaction is finished to prepare N-chloromethylene-2-cyanopyrrolidine hydrochloride which is used as a chlorinating agent; respectively pumping an acetylated tributyl citrate solution of sucrose-6-ethyl ester and an acetylated tributyl citrate solution of the chlorinating agent into a continuous flow chlorination reaction system to obtain a chlorinated reaction solution; carrying out on-line membrane separation extraction on the chlorinated reaction liquid, and carrying out counter-current extraction by using isopropyl acetate to obtain an extraction phase and a reaction phase; and adsorbing, distilling and purifying the reaction phase, and recycling the recovered acetylated tributyl citrate solvent. According to the technical scheme, waste solvent discharge and waste water generation are reduced from the source, the three-waste treatment cost is reduced, and the economical efficiency and the environmental protection property of the whole process are improved.

The application discloses a dynamic plasticizing regulation type PVC environment-friendly stabilizer composite method and relates to the technical field of PVC processing aids.The dynamic plasticizing regulation type PVC environment-friendly stabilizer comprises the following raw materials in parts by weight: 20-30 parts of modified calcium stearate, 50-70 parts of modified tributyl citrate, 60-90 parts of hydrotalcite, 12-22 parts of organic tin, 18-28 parts of pentaerythritol, 16-22 parts of compound antioxidant, 4-10 parts of nano silicon dioxide, 22-32 parts of bio-based fatty acid, 2-6 parts of graphene quantum dots, 12-16 parts of methyl methacrylate-butadiene-styrene copolymer, 3-6 parts of antistatic agent, 10-14 parts of phosphorus-containing flame retardant, 4-10 parts of stearic acid and 3-7 parts of nano montmorillonite.The application modifies calcium stearate and tributyl citrate, endows the stabilizer with dynamic plasticizing regulation capability, and has multiple functions such as high-efficiency thermal stability and flame retardation.The raw materials are environment-friendly, can realize low-temperature rapid plasticizing, reduce energy consumption, and have excellent mechanical properties and strong weather resistance, are suitable for multiple scenes such as pipe materials and electronic packaging, and meet the green and intelligent development trend.

The invention relates to the technical field of flooring materials, in particular to a fireproof high-strength plastic flooring material and a production process thereof. The fireproof high-strength plastic floor material is prepared from the following components in parts by weight: 45 to 65 parts of matrix resin, 20 to 30 parts of composite filler, 10 to 12 parts of acetyl tributyl citrate, 6 to 8 parts of calcium-zinc composite stabilizer, 6 to 9 parts of aluminum hypophosphite, 3 to 5 parts of nano silicon dioxide, 2 to 3 parts of maleic anhydride grafted POE (Polyolefin Elastomer), 1 to 2 parts of oxidized polyethlene wax, 0.5 to 1 part of antioxidant and 0.5 to 1 part of ultraviolet light absorber, wherein the composite filler is prepared from surface modified aluminum hydroxide, a compound layered silicate nano composite material and zinc borate coated calcium carbonate. According to the fireproof high-strength plastic floor material provided by the invention, the flame retardance of the plastic floor material is improved, and the strength, toughness, tear resistance, wear resistance and dimensional stability of the material are improved.

The application discloses a low-temperature sintering copper-tin conductive paste and a preparation method thereof, relates to the technical field of conductive paste, and provides the following steps: taking modified copper powder, tin powder and modified carbon nanotubes, mixing under a nitrogen atmosphere, and obtaining conductive powder; taking terpineol, tributyl citrate and acetic acid, stirring, and obtaining a solvent; taking the conductive powder, adding the conductive powder into the solvent, stirring, and grinding, so as to obtain the low-temperature sintering copper-tin conductive paste. The silver layer prepared on the copper powder by chemical plating is uniform and dense, on one hand, the silver layer protects the copper powder from further oxidation before sintering; on the other hand, the silver layer on the copper powder promotes the wettability of the copper powder and molten tin liquid, is beneficial to the spreading of the molten tin liquid, and promotes the compatibility between the molten tin liquid and the silver-nanoparticle-loaded carbon nanotubes, so that the conductivity of the conductive paste is improved.

The invention discloses a degradable non-woven fabric and a preparation process thereof, and relates to the technical field of degradable high polymer materials. The degradable non-woven fabric is prepared from the following raw materials in parts by weight: 45 to 60 parts of modified polylactic acid, 15 to 25 parts of modified bamboo fiber, 8 to 15 parts of polycaprolactone, 5 to 10 parts of poly (butylene succinate), 2 to 5 parts of tributyl citrate, 1 to 3 parts of nano-hydroxyapatite, 0.5 to 1.2 parts of vitamin E and 0.3 to 0.8 part of polyaspartic acid. The degradable non-woven fabric is scientific in raw material ratio, takes the modified polylactic acid and the modified bamboo fibers as cores, and has good degradability and mechanical properties. The preparation process is accurate and controllable, the compatibility of the raw materials is improved through multi-stage modification, the internal stress can be eliminated through the procedures of melt spinning, hot rolling forming and the like, the finished product is environmentally friendly and stable in quality, and practicability and ecological friendliness can be effectively considered.