313 results about "Diethylenetriamine" patented technology

The invention belongs to the technical field of thin film capacitors, and particularly relates to a chemical grafting modified polypropylene capacitor film material and a preparation method and application thereof. According to the preparation method of the chemical grafting modified polypropylene capacitor film material, provided by the invention, diethylenetriamine ethyl acrylate with a plurality of specific groups such as amino groups and carboxyl groups and unsaturated double bonds is synthesized through esterification reaction, and the diethylenetriamine ethyl acrylate is introduced into a polypropylene material through chemical grafting to obtain chemical grafting modified polypropylene; the prepared polypropylene capacitor film material has the excellent properties of good compatibility, difficulty in film breakage, capability of adsorbing and removing residual moisture, difficulty in oxidation corrosion, excellent breakdown resistance and the like, and the preparation method is a preparation method of the high-performance polypropylene capacitor film material; therefore, the technical problem that a polypropylene capacitor film material prepared in the prior art is low in performance is solved.

The invention discloses an efficient wet desulfurization synergist and a preparation method thereof, and relates to the technical field of flue gas desulfurization. The efficient wet desulphurization synergist comprises the following raw materials in parts by weight: 10-20 parts of sodium formate, 5-10 parts of citric acid, 20-30 parts of binary acid, 5-6 parts of a surfactant, 15-20 parts of magnesium salt, 12-18 parts of sodium salt and 2-5 parts of a pH buffer agent. The preparation method comprises the following steps: reacting cyanuric chloride with lauryl amine to generate a monosubstituted compound; then reacting with L-asparaginic acid to generate a disubstituted compound; reacting with diethylenetriamine to generate a bis-triazine ring compound; and finally, reacting with sodium 2-chloroethanesulfonate to generate the surfactant. The high-efficiency wet desulphurization synergist prepared by the invention has a desulphurization effect.

The present invention provides a polyester heat-shrinkable film containing recycled materials and a preparation method thereof, belonging to the technical field of polymer synthetic films. The raw materials of the polyester heat-shrinkable film include recycled PET polyester particles, PET polyester chips, and a modified masterbatch; the modified masterbatch is prepared from polyethylene terephthalate-1,4-cyclohexanedimethanol ester, triphenyl phosphite, polyethylene glycol block copolymer, nano-silica, and hyperbranched polyester amine; the polyethylene glycol block copolymer is prepared from polyethylene glycol and γ-valerolactone under the action of a catalyst; the hyperbranched polyester amine is prepared from trimethylolpropane, methyl crotonate, and diethylenetriamine. The product of the present invention has excellent properties such as excellent unidirectional anti-shrinkage performance and low haze.

The application discloses a self-repairing crystal anti-permeation high-durability cement-based material, a cement-based surface structure and a paving method thereof. The self-repairing crystal anti-permeation high-durability cement-based material comprises the following components in parts by weight: Portland cement 40-60 parts, wear-resistant aggregate 35-50 parts, water reducing agent 0.02-0.05 parts, retarder 0.2-0.5 parts, redispersible emulsion powder 1-2 parts, silica fume 1-2 parts, expanding agent 1-3 parts, chelating agent 1-6 parts and crystallization precipitant 1-6 parts; the total amount of the above components is 100 parts; the chelating agent is diethylenetriamine pentaacetic acid, and the weight ratio of the chelating agent to the crystallization precipitant is (0.5-2):1. The cement-based material has excellent self-repairing property, so that the strength, durability and anti-permeation property of the cement-based material are significantly improved.

The invention relates to the technical field of carbon dioxide capture, and discloses a carbon dioxide absorbent and a preparation method thereof, and the carbon dioxide absorbent comprises the following components by weight: 10-15 parts of diethylenetriamine and 2-3 parts of modified mesoporous silica. According to the invention, through a synergistic adsorption mechanism of diethylenetriamine and modified mesoporous silica, a relatively good CO2 capture capability is realized; the cage-shaped structure of the modified mesoporous silica has a high specific surface area and ordered pore channels, and provides sufficient loading sites and diffusion channels for diethylenetriamine; meanwhile, an amino auxiliary (containing a plurality of primary amine and secondary amine groups) introduced in the modification process and a polyamine structure of diethylenetriamine form an amino cluster, and a better adsorption effect is achieved.

The invention provides a perfluoroethanone microcapsule and a preparation method thereof, and belongs to the technical field of fire extinguishing materials, the perfluoroethanone microcapsule comprises a core and a shell layer; the core comprises perfluorohexanone and fumed silica; the shell layer comprises isophorone diisocyanate, diethylenetriamine and a chlorine-containing monomer, and the isophorone diisocyanate, the diethylenetriamine and the chlorine-containing monomer are subjected to an interfacial polymerization reaction to form a polyurea-polyurethane hybrid network; the mass ratio of the shell to the core of the microcapsule is 1: (5-20); the anhydrous microcapsule core is constructed through an oil-in-oil type anhydrous interfacial polymerization system, so that the hydrolysis side reaction is fundamentally avoided, the microcapsule has higher stable encapsulation efficiency, and the reliability and long-term effectiveness of the product in the storage and use processes are ensured.

The invention discloses an amorphous PtNi self-supporting catalytic electrode, a preparation method thereof and a direct ammonia fuel cell, and belongs to the technical field of electrode materials. According to the technical scheme, the catalytic electrode adopts foamed nickel as a conductive framework substrate, and an amorphous PtNi alloy wall-shaped array structure grows on the foamed nickel in situ; the preparation method of the catalytic electrode comprises the following steps: pretreating the foamed nickel substrate; the preparation method comprises the following steps: adding platinum diacetylacetonate, potassium hydroxide, N, N-dimethylformamide and diethylenetriamine into ethylene glycol to prepare a precursor solution; and immersing foamed nickel into the precursor solution, and carrying out in-situ growth reaction under high-temperature and high-pressure conditions to obtain the amorphous PtNi self-supporting catalytic electrode. The catalytic electrode has the beneficial effects that the catalytic electrode shows high specific activity and extremely low apparent activation energy in ammoxidation reaction, still keeps 90% of current density after continuously working for 1000 hours, and shows excellent long-term stability and durability.

The invention discloses a preparation method and application of a metal sulfide adsorbent for adsorbing iodine and methyl iodide. The preparation method comprises the following steps: uniformly mixing an antimony source, a sulfur source, a deep eutectic solvent, polyamine and water to obtain a mixed solution; and transferring the mixed solution into a high-pressure reaction kettle, sealing, carrying out hydrothermal reaction at 110-220 DEG C for 2-9 days, cooling to room temperature to separate out crystals, and filtering, washing and drying to obtain the metal sulfide adsorbent. The invention also discloses application of the metal sulfide adsorbent in adsorption of iodine and methyl iodide. The metal sulfide adsorbent disclosed by the invention has a good adsorption effect on iodine and methyl iodide, and compared with an ethylenediamine-oriented metal sulfide adsorbent, the diethylenetriamine-oriented metal sulfide adsorbent has higher adsorption capacity on iodine and methyl iodide.

The invention discloses a preserving fluid for stably preserving sample DNA at normal temperature and a preparation method thereof, and belongs to the technical field of biological sample preservation. The preserving fluid comprises a lysis system, a nucleic acid protection system and a buffering and stabilizing system, the cracking system comprises a composite surfactant and an enzymolysis auxiliary agent; the composite surface active agent is prepared from polyether polyol fatty acid ester and cocamidopropyl hydroxy sulfobetaine; the enzymolysis auxiliary agent comprises lysozyme Lyso-V and protease K; the nucleic acid protection system comprises a nitrogen heterocyclic polyamine-carboxylic acid derivative and dextran sulfate; the nitrogen heterocyclic polyamine-carboxylic acid derivative comprises 1, 4, 7, 10-tetraazacyclododecane-N, N ', N' ', N ''tetraacetic acid, 1, 4, 7-triazacyclononane-N, N', N''-triacetic acid, disodium ethylene diamine tetraacetate-nitrogen heterocyclic derivative, and diethylenetriamine pentaacetic acid-piperazine derivative, and the nitrogen heterocyclic polyamine-carboxylic acid derivative comprises 1, 4, 7, 10-tetraazacyclododecane-N, N ', N '', N'' tetraacetic acid, 1, 4, 7-triazacyclononane-N, N', N ''-triacetic acid. The buffering and stabilizing system comprises an amphoteric buffering agent and a polymer stabilizer; the amphoteric buffering agent comprises 2-(N-morpholino) ethanesulfonic acid and N-tri (hydroxymethyl) methylglycine.

The invention provides three-vinylon rib and microcapsule self-repairing concrete and a preparation method thereof, and belongs to the technical field of building materials. Basalt fibers and polyvinyl alcohol fibers are blended, and obtained blended fibers are subjected to determinant three-dimensional weaving to prepare three-dimensional composite fibers; and soaking the three-dimensional composite fiber in epoxy resin, coating a mixture of diethylenetriamine and ethylenediamine, drying and curing to obtain the three-vinylon rib. And coating the epoxy resin with polyphenylene sulfide to prepare the microcapsule. And then mixing the three-vinylon rib and the microcapsule with concrete slurry to prepare the three-vinylon rib and microcapsule self-repairing concrete. The compressive strength and breaking strength of the three-vinylon rib and microcapsule self-repairing concrete obtained by adopting the method are remarkably improved, and meanwhile, the three-vinylon rib and microcapsule self-repairing concrete also has excellent self-repairing capability.

The invention relates to the technical field of chemical engineering, and discloses a hydrogen peroxide stabilizer and a preparation method thereof.The stabilizer is obtained in the mode that alpha-chlorinated acrylic acid and functional monomers are subjected to free radical polymerization and then hydrolyzed; the functional monomer is obtained by firstly carrying out ammonolysis reaction on diethylenetriamine and allyl glycidyl ether to obtain an intermediate, then mixing the intermediate with sodium chloroacetate and carrying out reaction under an alkaline condition, and by introducing the functional monomer containing the carboxylic acid group, the stability of hydrogen peroxide is improved; and invalid decomposition caused by metal ion catalysis is reduced.

The present invention relates to the field of new material technologies, and discloses a flame-retardant fabric, a preparation method thereof and an application thereof. The method includes: (1) performing a first contact reaction on diethylenetriamine, vinylsilane and epoxy group-containing silane to obtain diethylenetriamine-silane; (2) performing a first dilution of the diethylenetriamine-silane in solvent I, adjusting the pH to obtain a diethylenetriamine-silane solution, immersing the fabric in the diethylenetriamine-silane to perform a first immersion to obtain a flame-retardant treated fabric I; (3) performing a second contact reaction on tetrakis(hydroxymethyl)phosphonium sulfate, urea and water to obtain a pre-polymerized tetrakis(hydroxymethyl)phosphonium sulfate flame retardant; (4) immersing the flame-retardant treated fabric I in the pre-polymerized tetrakis(hydroxymethyl)phosphonium sulfate flame retardant to perform a second immersion to obtain a flame-retardant fabric. The flame-retardant fabric prepared by the method provided by the present invention has excellent flame-retardant effect, the method is simple and efficient, and there is no need for gas to participate in the reaction, the cost is low, and it is suitable for mass production.

The invention discloses a dental whitening gel and a preparation method thereof, and belongs to the technical field of oral medicine. Comprising the following components in percentage by mass: 10%-20% of urea peroxide, 0.5%-1% of sodium alginate, 1%-2% of tea tree oil, 2%-3% of dipotassium phosphate, 2%-4% of monopotassium phosphate, 3%-5% of carbomer, 3%-5% of glycerol, 59%-78% of deionized water and 0.5%-1% of pentasodium diethylenetriamine pentaacetate. The oral cavity cleaning agent has high safety, and does not have serious toxicity and irritation to the oral cavity.

The invention provides a cationic waterborne epoxy hardener without containing free amine and a preparation method thereof, and relates to the technical field of epoxy hardeners, the method comprises the following steps: 1) mixing small molecular aldehyde and hydroxyethyl diethylenetriamine for reaction to obtain oxazolidine and aldimine terminated modified amine; (2) carrying out reaction on the modified amine and polyfunctional epoxy resin to obtain modified oxazolidine and aldimine-terminated modified resin amine; 3) mixing the modified oxazolidine and aldimine terminated modified resin amine, monofunctional glycidyl ether and water for reaction to obtain terminated modified resin amine; and 4) adding small molecular acid to neutralize the terminated modified amine, and transferring water to obtain the cationic waterborne epoxy curing agent without free amine. The paint film can be endowed with excellent boiling water resistance, acid and alkali resistance, neutral salt mist resistance and the like, the preparation process is simple, the production cost is low, and the paint is suitable for large-scale industrial application.

The invention provides degradation liquid capable of degrading amine cured epoxy resin, a degradation recovery method and a regeneration method of the amine cured epoxy resin. The degradation liquid comprises an amine compound, an inorganic alkali solution and water. Wherein the ratio of the amine compound is 15%-30%, the ratio of the inorganic alkali solution is 6%-20%, and the balance is water; the amine compound comprises monoethanolamine, diethylenetriamine and triethylene tetramine in a volume ratio of 1: (1-2): (1-2). In the degradation liquid disclosed by the invention, monoethanolamine realizes amidation of degradable weak bonds in an epoxy resin cured substance under the promotion of diethylenetriamine and triethylene tetramine, and realizes degradation of amine cured epoxy resin; the degradation liquid provided by the invention can be used for rapidly and completely degrading a degradable epoxy resin cured product at a relatively low degradation temperature (about 100 DEG C), the degradation product is simply separated and purified to resynthesize the degradable epoxy resin, and the degradation liquid can be recycled through simple distillation.

The present invention relates to a composite boron powder and a preparation method thereof. The composite boron powder is prepared by a secondary condensation method using a vinylidene fluoride / propylene alcohol copolymer as a compounding agent, a polyethylene glycol monobutyl ether acrylate / acrylonitrile / allylamine / hydroxyethyl acrylate copolymer as an auxiliary compounding agent, an epoxy resin as a high-strength composite adhesive, and diethylenetriamine as a curing agent. The amounts of the components are based on the mass of the boron powder: the mass of the vinylidene fluoride / propylene alcohol copolymer is 1-2% of the mass of the boron powder, the mass of the polyethylene glycol monobutyl ether acrylate / acrylonitrile / allylamine / hydroxyethyl acrylate copolymer is 0.3-1% of the mass of the boron powder, the mass of the epoxy resin is 2-3% of the mass of the boron powder, and the mass of the diethylenetriamine is 0.15-0.4% of the mass of the boron powder.

The invention discloses a modification method and application of double-layer impregnated modified aramid fiber, and the double-layer impregnated modified aramid fiber is prepared by the following steps: reacting hexamethylene diisocyanate and glycerol triglycidyl ether in a water phase to form a first-layer impregnation liquid, and carrying out first-layer impregnation modification on aramid fiber; and forming a second-layer impregnation liquid from ethylene glycol diglycidyl ether, diethylenetriamine, glycidyl methacrylate and butadiene-vinylpyridine rubber latex, performing second-layer impregnation modification on the aramid fibers, drying after double-layer modification to obtain double-layer impregnation modified aramid fibers, and blending and vulcanizing the double-layer impregnation modified aramid fibers and rubber to obtain the rubber-modified aramid fibers. The modified aramid fiber reinforced butadiene styrene rubber composite material can be prepared. By designing a two-step dipping treatment system containing isocyanate and epoxy bifunctional groups, efficient chemical modification of the aramid fiber surface is realized, and a good reaction interface with a rubber matrix is endowed.

The invention relates to the technical field of oilfield chemistry, and discloses an emulsifier, a response agent, a thick oil viscosity reduction method and application. The emulsifier is prepared from nano aluminum oxide, zwitterionic polyacrylamide and alkyl diethylenetriamine according to the mass ratio of 1 to (0.1 to 3) to (7 to 25); wherein the average particle size of the nano aluminum oxide is 30 to 300 nm. When the emulsifier provided by the invention is used for reducing the viscosity of the heavy oil, a stable emulsion can be obtained in the presence of CO2, quick demulsification can be realized by discharging CO2, the stability and quick response effect can still be kept after multiple cycles, and the emulsifier is particularly suitable for reducing the viscosity of the heavy oil.

The invention relates to the technical field of discharge aiding agents, in particular to a composite synergistic discharge aiding agent and a preparation method thereof. The composite synergistic discharge aiding agent is prepared from the following raw materials in percentage by weight: 6-10% of dodecyl dimethyl benzyl ammonium chloride, 2-4% of enzymolysis sodium lignin sulfonate, 1-3% of diethylenetriamine, 0.4-1.2% of a first additive, 0.2-0.4% of a second additive, 0.1-0.3% of a protective agent, 0.1-0.3% of a regulator and the balance of water. According to the invention, after the sodium lignin sulfonate is subjected to directional enzymolysis treatment by cellulase, the density of a sulfonic acid group is increased, the effect of inhibiting particle aggregation can be achieved, and meanwhile, residual cellulose in a molecular chain can be degraded, the molecular weight is reduced, and exposure of the sulfonic acid group is increased, so that the water solubility and the dispersing capacity of the sodium lignin sulfonate are improved; solid particles in a stratum can be better dispersed, pore channels are prevented from being blocked, and the use performance of the cleanup additive is effectively improved.

The invention provides a diesel oil anti-wear agent and a preparation process thereof, and belongs to the technical field of diesel oil additives, and the preparation process comprises the following steps: mixing and stirring diisooctyl maleate and xylene, adding diethylenetriamine and deionized water, carrying out heating reaction, adding toluene, 4-(aminomethyl) pyridine and ethylene oxide, carrying out mixing reaction, filtering, washing, and drying to obtain the diesel oil anti-wear agent. The pyridinium-based polyester hollow capsule is prepared; the preparation method comprises the following steps: mixing xylene, catechol, ethylene phosphonic acid, ammonium persulfate and deionized water, heating, dispersing in cyclohexane, adding polyvinyl alcohol, octadecyl methacrylate and azodiisobutyronitrile, mixing and reacting to obtain catechol phosphonate nano colloidal particles; mixing and stirring the fatty acid ester solution, the oleoyl fluorocarbon copolymer and the pyridinium-based polyester hollow capsule, adding the catechol phosphonate nano colloidal particles, continuously stirring, performing ultrasonic treatment, and degassing to obtain the diesel oil anti-wear agent. The diesel oil antiwear agent can improve the antiwear property and demulsibility of the diesel oil antiwear agent.

The invention discloses an additive for a vanadium battery electrolyte, the electrolyte and a preparation method of the electrolyte. The additive comprises an inorganic additive and an organic additive, the inorganic additive comprises magnesium aluminum silicate and modified nano silicon dioxide; the organic additive is prepared from diethylenetriamine and chitosan. The mass ratio of the inorganic additive to the organic additive is 3: (1.5-2.5); the mass ratio of the magnesium aluminum silicate to the modified nano silicon dioxide is 1: (1.2-1.5); the mass ratio of the diethylenetriamine to the chitosan is (0.8-1): 3.5. By utilizing the synergistic effect of the components of the additive, the oxidation of divalent vanadium ions can be effectively inhibited, the self-agglutination of pentavalent vanadium ions is prevented, the precipitation of the pentavalent vanadium ions is prevented, the stability of the vanadium battery electrolyte is greatly improved, the added additive has no influence on the acidity and viscosity of the vanadium battery electrolyte, and the service life of a vanadium battery electrolytic stack is prolonged.

The present invention discloses a composite sludge dewatering agent prepared from organic waste acid and its production system, which relates to the field of dewatering agent production. In terms of parts by weight, the raw material composition of the composite sludge dewatering agent prepared from organic waste acid includes: 30-60 parts of diethylenetriamine, 60-180 parts of concentrated hydrochloric acid, an appropriate amount of absolute ethanol, 75-125 parts of epichlorohydrin, 100-200 parts of wood powder, 50-100 parts of sodium hydroxide, 30-50 parts of cationic polyacrylamide, 50-100 parts of natural bamboo charcoal particles, and an appropriate amount of pure water. When producing this dewatering agent, the overall equipment is controlled through an operating platform. After adding an appropriate amount of raw materials to the etherification unit, a water pump will extract the upper-layer etherifying agent and flow it into the alkalization unit, and the purification device will also adsorb the waste gas generated during etherification. Then, the alkalization unit will mix and stir some raw materials such as wood powder with the etherifying agent, and finally form a dewatering agent.

The application belongs to the field of new material preparation, and particularly relates to a preparation method of amino-modified biochar / SiO2 composite aerogel. The application prepares cellulose / SiO2 composite aerogel by taking cellulose as a template and tetraethyl orthosilicate as a silicon source, obtains biochar / SiO2 composite aerogel after high-temperature calcination, and then carries out amino modification on the biochar / SiO2 composite aerogel by using a polymer obtained by cross-linking reaction of 3-glycidoxypropyltrimethoxysilane and diethylenetriamine, to obtain amino-modified biochar / SiO2 composite aerogel. The amino-modified biochar / SiO2 composite aerogel prepared by the application has high selectivity for CO2 adsorption, and the preparation process is simple.

The invention provides a preparation method of an intercalated expanded graphite catalyst for catalyzing ozone, the catalyst and application, and belongs to the technical field of graphite materials. Firstly, expanded graphite is subjected to pre-oxidation treatment, the interlayer distance of the expanded graphite is increased, then the pretreated expanded graphite is subjected to intercalation and oxidation through an intercalation substance, an ion pair compound of trityl carbocation and heteropolyanion [P (Mo3O10) 4] 3 <-> with negative electricity is introduced into the interlayer of the expanded graphite, the compound is stably intercalated between the graphite layers, and the expanded graphite is prepared. Organic pollutants and ozone molecules in the wastewater are adsorbed, and the effective collision probability and the reaction rate between the ozone molecules and the organic pollutants are improved; finally, amine substances diethylenetriamine and triethylenetetramine are used for further treating the expanded graphite, and hydrogen bonds are combined with organic compounds such as phenols, so that the adsorption performance of the graphite is improved. The prepared catalyst is combined with ozone to realize good removal of tetracycline, phenol and COD (Chemical Oxygen Demand) in wastewater.

The invention relates to the technical field of radiotherapy auxiliary instruments, in particular to an injectable calcium sodium alginate hydrogel spacer for radiotherapy and a preparation method of the injectable calcium sodium alginate hydrogel spacer. Nano calcium carbonate is used as an adjusting switch, an adjustable mechanical and degradation performance foundation of the hydrogel is laid, and the material is endowed with unique bifunctional characteristics through the synergistic effect of the nano calcium carbonate, a contrast agent iodized oil and a degradation liquid diethylenetriamine pentaacetic acid. The hydrogel can quickly form gel after being injected, keeps long-term structural stability and clear CT imaging capability in vivo, and can monitor the position and form of the hydrogel in a lossless manner; and when the radiotherapy period is finished, the on-demand and rapid degradation of the hydrogel can be realized only by injecting the diethylenetriamine pentaacetic acid, so that the risk of long-term retention is avoided. In-vitro and in-vivo experiments prove that the material has good biocompatibility, can significantly reduce the radiation dose of normal tissues such as rectum and the like, realizes the technical span from invisibility and difficult degradation to visibility and degradability, and has great clinical transformation value.

The present invention discloses polyethyleneamine salts of sulphonyl oleic acid and a 5 hydrocarbon fuel additive composition comprising the same. The said polyethyleneamine salts of sulphonyl oleic acid is made by mixing a sulphonyl oleic acid with at least one polyethyleneamine. Wherein, the sulphonyl oleic acid is selected from at least one of (9Z)-8-sulfo-octadec-9-enoic acid or (9Z)-11-sulfo-octadec-9-enoic acid. The at least one polyethyleneamine is selected from triethylenetetramine (TETA), or diethylenetriamine 0 (DETA), pentamethyldiethylenetriamine, tetraethylenepentamine, 1,4,7-triazacyclononane, 1,1,1-Tris(aminomethyl)ethane, or cyclen. The hydrocarbon fuel additive composition is made of polyethyleneamine salts of sulphonyl oleic acid and a cosolvent system consisting of sulphonyl oleic acid and dioxane. Wherein, the said hydrocarbon fuel additive composition acts as a dual functional additive and synergistically improves the conductivity as well as 5 lubricity of a hydrotreated diesel fuel.

To provide a new hepatic organoid maturation medium for induction or promotion of hepatocyte maturation within a hepatic organoid.SOLUTION: A hepatic organoid maturation medium comprises at least one selected from the group consisting of diethylenetriamine-N',N',N',N'',N''-pentaacetic acid, calcipotriene, and bleomycin.SELECTED DRAWING: Figure 8

The invention belongs to the technical field of chemical production, aims to solve the problem of catalyst deactivation caused by crystallization and wrapping in the existing hydrogenated bisphenol A (HBPA) production process, and provides a star polymer for inhibiting crystallization and wrapping in the HBPA production process as well as a preparation method and application thereof. The star polymer provided by the invention takes a polyfunctional group compound (such as pentaerythritol and diethylenetriamine) as a core, a polyacrylic acid main chain with the molecular weight of 5,000-20,000 g / mol is extended, a polyethylene glycol side chain with the molecular weight of 500-2,000 g / mol and the grafting rate of 20%-50% is grafted on the main chain, and through the hydrogen-bond interaction of a carboxylic acid group and HBPA crystals and the steric hindrance effect of the polyethylene glycol side chain, the molecular weight of the HBPA crystals is increased, so that the molecular weight of the HBPA crystals is increased, and the molecular weight of the HBPA crystals is increased. Devitrification wrapping is efficiently inhibited. The invention develops a method which is efficient and environment-friendly and does not introduce new impurities, is used for inhibiting the crystallization wrapping phenomenon in the hydrogenated bisphenol A production process, and has important industrial application value.

The invention relates to the technical field of composite films for BIB packaging inner bags, and discloses a high-barrier single-material sterile BIB packaging bag and a preparation process thereof, the preparation process comprises the following steps: using vanillin, 3-bromopropene, gallic acid, diethylenetriamine and 1, 3-acetonedicarboxylic acid as raw materials to prepare a gallic acid type grafting monomer; the preparation method comprises the following steps: carrying out melt grafting modification treatment on LDPE (Low-Density Polyethylene) resin by using a gallic acid type grafting monomer, and compounding with graphene oxide through pi-pi accumulation action and hydrogen-bond interaction to prepare the graphene-polyethylene composite master batch with an antioxidant function; the preparation method comprises the following steps: preparing a polyethylene master batch, introducing the master batch into a seven-layer co-extruded film to prepare a polyethylene co-extruded film, and preparing the high-barrier single-material sterile BIB packaging bag by taking the co-extruded film as a raw material of an inner bag of the BIB packaging bag. The polyethylene co-extruded film prepared by the invention still shows excellent mechanical properties and barrier properties after being treated by a radiation sterilization technology, and can be used instead of an existing aluminized polyester bag.

The invention discloses amido-modified hypercrosslinked resin, a preparation method thereof and application of the amido-modified hypercrosslinked resin to adsorption of chlorine-containing VOCs (Volatile Organic Compounds). The preparation method comprises the following steps: chloromethylation: swelling hypercrosslinked NDA-88 resin in 1, 2-dichloroethane, adding anhydrous FeCl3 as a catalyst, and carrying out chloromethylation reaction at 35-40 DEG C to obtain chloromethylated resin; and amination: mixing the chloromethylated resin with an amination reagent diethylenetriamine, carrying out amination reaction at 140-150 DEG C, and carrying out post-treatment to obtain the amino modified hypercrosslinked resin. The amino-modified hypercrosslinked resin has high adsorption capacity and long penetration time for chlorine-containing VOCs (Volatile Organic Compounds) such as dichloromethane, chlorobenzene and the like, is stable in performance under the relative humidity of 50%, and is small in adsorption performance attenuation after multiple times of thermal regeneration. The resin is simple in preparation method, excellent in performance and suitable for efficient purification treatment of industrial chlorine-containing VOCs waste gas.