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183 results about "Divinyl benzene" patented technology

Divinylbenzene (DVB) consists of a benzene ring bonded to two vinyl groups. It is related to styrene (vinylbenzene) by the addition of a second vinyl group. It is a colorless liquid manufactured by the thermal dehydrogenation of isomeric diethylbenzenes.

High-strength toughened CPVC (Chlorinated Polyvinyl Chloride) pipe and preparation method thereof

The invention belongs to the technical field of CPVC pipe preparation, and provides a high-strength toughened CPVC pipe and a preparation method thereof. Firstly, butadiene and divinyl benzene are copolymerized to form a high-crosslinking structure, rigid support is provided, butyl methacrylate and acrylonitrile are copolymerized, flexibility and polarity are adjusted, interface bonding force is enhanced, and acrylic acid, epoxy acrylate and ethyl methacrylate are copolymerized to optimize compatibility with a matrix; secondly, through copolymerization of monomers such as 2-sulfonic acid ethyl methacrylate, polyethylene glycol methacrylate and dimethylacryloyloxyphosphonic acid, the polarity and flexibility of the compatilizer are adjusted, and the interface bonding strength of the compatilizer to a CPVC matrix and a modified elastomer is improved, so that the mechanical property of the composite material is remarkably improved; finally, nano SiO2 is subjected to surface modification through a silane coupling agent, so that the dispersity of the inorganic filler and the binding force with a matrix are improved, and the rigidity and the thermal stability of the composite material are enhanced.
Owner:SHANGHAI BST TUBING

Gel type imidazolyl anion exchange resin as well as preparation method and application thereof

The invention relates to the technical field of water treatment, and provides gel type imidazolyl anion exchange resin as well as a preparation method and application thereof. According to the method, the gel type styrene-divinyl benzene copolymer is taken as a matrix, and the adsorption selectivity of the gel type imidazolyl anion exchange resin on rhenium / technetium is regulated and controlled by grafting imidazole with alkyl side chains with different lengths, so that the removal rate of rhenium / technetium is increased. The gel type imidazolyl anion exchange resin provided by the invention has relatively high adsorption capacity on ReO4 <-> and TcO4 <->, high selectivity, wide applicable pH value and temperature range, strong acid and alkali resistance and irradiation stability, and wide application prospect.
Owner:JILIN UNIVERSITY

Mobile or stationary biocidal and virucidal air filters and room fans, as well as methods for the production and environmentally friendly disposal of their air filter materials.

Mobile or stationary air filter (L) or room fan (RL) according to Figure 1, comprising an outer wall (5), a (2) for generating an airflow (3) which is guided through an air filter material (1.1), an air inlet (2.1) and an air outlet (2.2), wherein the air filter material (1.1) contains poly(styrenesulfonic acid) (sulfonic acid biocide) (1.3) cross-linked with divinylbenzene and / or an acidic salt (1.3.1) (sulfonic acid biocide salt) of the sulfonic acid biocide (1.3) with biocidal cations, wherein the sulfonic acid biocide (1.3) and / or sulfonic acid biocide salt (1.3.1)(i) are positively and / or materially bonded to and / or in inert carriers and, in the fixed state, are in direct contact with carrier materials (1.1.7) on and / or in which biocidal Metal microparticles of a mean particle size d50 of 0.1 µm to <1,000 µm are fixed, and / or (ii) with carrier materials (1.1.7) on and / or in which biocidal metal microparticles of a mean particle size d50 of 0.1 µm to <1.000 µm are fixed, are mixed; its use and methods for the production and environmentally friendly disposal of air filter materials (1.1).
Owner:MUNCH ELKE

Low-dielectric and high-peel-strength hydrocarbon resin, composition for copper-clad plate and preparation method of composition

The invention discloses a low-dielectric and high-peel-strength hydrocarbon resin as shown in a formula (3), a composition for a copper-clad plate and a preparation method of the composition. The preparation method is characterized in that divinyl benzene and a phenolic compound containing double bonds are subjected to a polymerization reaction in the presence of a free radical initiator, a polymerization inhibitor and a solvent to obtain the low-dielectric and high-peel-strength hydrocarbon resin; the resin composition for the copper-clad plate is prepared by uniformly mixing 100 parts by mass of hydrocarbon resin with low dielectric and high peel strength, 10-20 parts by mass of maleimide resin, 0.1-0.5 part by mass of an initiator, 0.1-0.5 part by mass of an antioxidant, 60-80 parts by mass of filler and 70-140 parts by mass of a solvent at the temperature of 30-50 DEG C. The composition for the low-dielectric and high-peel-strength hydrocarbon resin and the copper-clad plate has the characteristics of high peel strength, low dielectric constant, low dielectric loss and the like, is good in product performance, and is suitable for the fields of artificial intelligence, 5G base stations, power amplifiers, automobile radars and the like. # imgabs0 #
Owner:SICHUAN DONGFANG INSULATING MATERIAL +1

Strong cation exchange chromatographic filler as well as preparation method and application thereof

The invention relates to a strong cation exchange chromatographic filler as well as a preparation method and application thereof. The strong cation exchange chromatographic filler comprises sulfonated poly (glycidyl methacrylate)-divinyl benzene microspheres. The strong cation exchange chromatographic filler provided by the invention can simultaneously show excellent separation selectivity on rare earth elements, and also has long-term stability and excellent cycle performance, so that the economic cost is reduced, and the strong cation exchange chromatographic filler has relatively high economic benefits and is green and environment-friendly.
Owner:GANJIANG INNOVATION ACAD CHINESE ACAD OF SCI

Resin composition

InactiveJP2025009689AAcenaphthyleneImide
To provide a resin composition having a low dielectric constant, a low dielectric loss tangent, a high glass transition temperature, and a low peeling strength change rate.SOLUTION: A resin composition contains a resin mixture. The resin composition contains a first resin polymerized with a monomer mixture containing styrene, divinyl benzene, and ethylene, a second resin containing a polyphenylene ether resin modified with bismaleimide, a third resin block-polymerized with a monomer mixture containing styrene and butadiene, and acenaphthylene.SELECTED DRAWING: None
Owner:NANYA PLASTICS CORP

Organic acid anion pair polyion liquid as well as preparation method and application thereof

The invention relates to an organic acid anion paired polyion liquid catalyst as well as a preparation method and application thereof. Due to environmental pollution caused by halogen, a series of environment-friendly porous polyion liquid catalysts paired with organic acid anions are designed and synthesized, 1-vinyl imidazole and bis (2-chloroethyl) ether are used as raw materials, and the ionic liquid diethyl ether bis (1-vinyl imidazole) chloride is successfully prepared. Divinyl benzene is selected as a cross-linking agent and a structure stabilizer, and a stable copolymer is prepared. The copolymer is put into a sodium hydroxide solution to react for three days, hydroxyl replaces chloride anions to obtain a substance [ECD] OH, the [ECD] OH is put into an organic acid solution to react for three days, and finally, organic acid anions replace halogen anions, so that the pollution to the environment is reduced. The series of catalysts are stable in structure, and can efficiently catalyze carbon dioxide cycloaddition to generate cyclic carbonate under the conditions of no solvent and no cocatalyst.
Owner:LIAONING UNIVERSITY

High-strength screen cloth and preparation method thereof

The invention relates to the technical field of textile materials, and particularly discloses high-strength screen cloth and a preparation method thereof. The high-strength screen cloth is prepared from the following raw materials: caprolactam, p-phenylenediamine, adipic acid, diphenyldicarboxylic acid, a modified monomer, zinc diethyl hypophosphite, divinyl benzene, modified glass fibers, an antioxidant and a lubricant. The preparation method comprises the following steps: preliminarily polymerizing caprolactam, p-phenylenediamine, adipic acid, biphenyldicarboxylic acid and the modified monomer, then adding the modified glass fiber, zinc diethyl hypophosphite and divinyl benzene for continuous reaction to obtain a polyamide copolymer, and finally performing melt spinning and weaving on the polyamide copolymer, the antioxidant and the lubricant to obtain the required high-strength mesh cloth. The high-strength screen cloth prepared by the invention has excellent mechanical properties and aging resistance, is suitable for being applied to the fields with high-performance requirements, such as constructional engineering materials and special protective equipment, and is high in practicability and wide in application prospect.
Owner:福建俊诚纺织有限公司

Cross-linking agent, preparation method thereof and application of cross-linking agent in rubber preparation

The invention relates to the technical field of preparation of cross-linking agents for rubber, in particular to a cross-linking agent, a preparation method of the cross-linking agent and application of the cross-linking agent in rubber preparation. The cross-linking agent is prepared through multi-stage structural design and functional modification and comprises the following steps: firstly, synthesizing a porous carrier by a template method, loading a divinyl benzene cross-linking agent after vinyl silane alkenylation modification, forming inner-layer packaging through Fe < 3 + >-tannic acid coordination, and performing surface functional modification by adopting 1, 9-decadiene to obtain the cross-linking agent. And finally, performing outer layer physical coating through low-melting-point paraffin. The cross-linking agent has a unique dual-threshold gating release characteristic, the outer paraffin provides physical protection at a mixing temperature, the inner coordination network is controllably dissociated at a vulcanization temperature, and on-demand release of cross-linking active components is realized. When the cross-linking agent is applied to rubber preparation, the uniformity of a cross-linking network can be remarkably improved, the cross-linking efficiency is improved, and the problems that a traditional cross-linking agent is easy to consume in advance, uneven in distribution and the like are solved.
Owner:GUANGXI RES INST OF NEW FUNCTIONAL MATERIALS CO LTD +3

High-strength antibacterial polypropylene composite material and preparation method thereof

The invention discloses a high-strength antibacterial polypropylene composite material and a preparation method thereof. The composite material comprises the following components in parts by weight: 100 parts of polypropylene, 15-25 parts of glass fiber, 1-8 parts of a compatilizer, 3-6 parts of unsaturated polyester, 1-5 parts of a stabilizer, 0.1-0.5 part of an initiator, 0.1-0.3 part of a metal ion antibacterial agent and 0.2-1.5 parts of an antioxidant, the stabilizer is selected from at least one of methyl methacrylate, acrylonitrile and divinyl benzene; the melting processing temperature of the polypropylene material is 160-175 DEG C. According to the invention, a micro-crosslinking structure is formed in the glass fiber reinforced polypropylene, so that the anisotropic shrinkage difference of the glass fiber reinforced polypropylene is effectively reduced, and the appearance quality defects caused by anisotropic characteristics of anisotropic shrinkage of the current glass fiber reinforced polypropylene material are reduced.
Owner:ZHEJIANG ATLANTENEW MATERIAL TECH CO LTD

Ablation-resistant tantalum ethoxide modified polyborosilazane resin as well as preparation method and application thereof

PendingCN120230295ASilazaneOligomer
The invention provides ablation-resistant tantalum ethoxide modified polyborosilazane resin as well as a preparation method and application of the ablation-resistant tantalum ethoxide modified polyborosilazane resin. The preparation method comprises the following steps: S1, reacting boron trichloride, methyl dichlorosilane and hexamethyldisilazane under the protection of an inert atmosphere to obtain a polyborosilazane fluid; s2, under the protection of inert atmosphere, reacting the polyborosilazane fluid, divinyl benzene and tantalum ethoxide in the presence of a catalyst to obtain a tantalum ethoxide modified polyborosilazane oligomer fluid; s3, under the protection of inert atmosphere, heating and curing the tantalum ethoxide modified polyborosilazane oligomer fluid to obtain the ablation-resistant resin. The tantalum ethoxide modified polyborosilazane resin disclosed by the invention has a high crosslinking degree and shows excellent high temperature resistance and oxidation resistance.
Owner:XI AN JIAOTONG UNIV

Method for synthesizing 1, 2-bis (4-vinyl phenyl) ethane

The invention discloses a method for synthesizing 1, 2-bis (4-vinylphenyl) ethane, which comprises the following steps: S1, under the protection of nitrogen, taking 4-vinylbenzyl chloride as a solvent and a reactant, and reacting in the presence of iodine, magnesium metal and ethylene glycol diethyl ether to generate the 1, 2-bis (4-vinylphenyl) ethane; s2, after the reaction is finished, heating, and filtering to remove magnesium chloride while the solution is hot; and S3, cooling and crystallizing to separate out the product 1, 2-bis (4-vinyl phenyl) ethane, and filtering and separating the product to obtain mother liquor which can be directly used for synthesizing the 1, 2-bis (4-vinyl phenyl) ethane. The method has the beneficial effects that the solubility of the product 1, 2-bis (4-vinylphenyl) ethane in 4-vinylbenzyl chloride can be effectively adjusted by introducing the additive ethylene glycol diethyl ether (EGDE), magnesium chloride can be removed by directly heating and filtering while the solution is hot after the reaction, then the product can be obtained by cooling and crystallizing the mother liquor, the process of the method is shorter than that of the existing method, a washing step is omitted, and the method is suitable for industrial production. And subsequent magnesium sulfate mother liquor drying and harsh solvent dehydration steps are avoided.
Owner:SHAANXI BASTEN TECH CO LTD

Wear-resistant decorative paper and method for producing the same

The application relates to the field of decorative materials, in particular to a wear-resistant decorative paper and a preparation method thereof. The preparation method of the wear-resistant decorative paper comprises the following steps: coating wear-resistant paint on the surface of base paper to form a wear-resistant coating layer through drying treatment, so that the wear-resistant decorative paper is prepared; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate and methyl methacrylate, so that the wear-resistant paint has good adhesion; the wear-resistant paint is prepared by using divinylbenzene and styrene, so that the hardness and strength of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using vinyl silicone oil, so that the flexibility and water / oil repellency of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate, methyl methacrylate, divinylbenzene, styrene and vinyl silicone oil, so that the prepared wear-resistant decorative paper has excellent wear resistance.
Owner:HANGZHOU LINAN HUIMEI DECORATION MATERIALS CO LTD

A fast-hardening early-strength high-compressive-strength freeze-resistant cement material and a preparation method thereof

ActiveCN121758135BCalcium silicateMeth-
The application provides a fast-hardening early-strength high-pressure and freeze-resistant cement material and a preparation method thereof, belongs to the technical field of cement materials, and the cement material comprises silicate cement clinker, natural anhydrous gypsum, calcined kaolin, calcined quartz powder, a silicon-aluminum-titanium composite mineralized early-strength freeze-resistant agent, a crystal bridge-pore dual functional agent and the like. The silicon-aluminum-titanium composite mineralized early-strength freeze-resistant agent is prepared by sintering, quenching and heat reaction of bauxite, silica fume, titanium dioxide, anhydrous calcium chloride and trisodium citrate, and surface modification by KH-550. The crystal bridge-pore dual functional agent comprises a calcium silicate hydrate crystal bridge agent and a polymer-SiO2 composite elastic pore forming agent. The polymer-SiO2 composite elastic pore forming agent is prepared by shearing emulsification of an oil phase prepared from styrene, butyl acrylate, divinylbenzene and polyglyceryl-10 diisostearate and an aqueous phase prepared from deionized water, sodium dodecyl sulfate and polyethylene glycol allyl methyl ether, ammonium persulfate reaction and tetraethyl orthosilicate reaction.
Owner:LIAOYANG TIANRUI CEMENT CO LTD

Self-toughening hydrocarbon copolymer for high-frequency high-speed copper-clad plate and preparation method of self-toughening hydrocarbon copolymer

The invention relates to the technical field of hydrocarbon resin, in particular to a self-toughening hydrocarbon copolymer for a high-frequency high-speed copper-clad plate and a preparation method of the self-toughening hydrocarbon copolymer. According to the invention, divinyl benzene, styrene and 4-tert-butyl styrene are used as main raw materials, and atom transfer radical polymerization is adopted to prepare the hydrocarbon copolymer containing vinyl. On the basis, a styrene-butadiene-styrene block copolymer (SBS) is directly added in a polymerization reaction to prepare the hydrocarbon copolymer with a self-toughening effect, and the hydrocarbon copolymer shows better formability. And finally, preparing a glue solution by using the prepared hydrocarbon copolymer, di-tert-butylperoxy isopropyl benzene, an antioxidant 1010 and xylene as raw materials, and heating, curing and molding to obtain a finished product. The prepared finished product has good heat resistance, water absorption, dielectric property and thermal expansion coefficient, and can be applied to the field of high-frequency and high-speed copper-clad plates.
Owner:EAST CHINA UNIV OF SCI & TECH

Phosphoric acid functionalized porous polyion liquid for uranium-containing wastewater treatment as well as preparation method and application of phosphoric acid functionalized porous polyion liquid

The invention relates to the technical field of radioactive wastewater treatment materials, in particular to phosphoric acid functionalized porous polyion liquid for uranium-containing wastewater treatment as well as a preparation method and application of the phosphoric acid functionalized porous polyion liquid. According to the preparation method of the phosphoric acid functionalized porous polyionic liquid for uranium-containing wastewater treatment, provided by the invention, 1-allyl-3-vinyl imidazole chloride ionic liquid is taken as a monomer, ethylene glycol dimethacrylate or p-divinyl benzene is taken as a cross-linking agent, and the porous polyionic liquid is obtained through polymerization reaction; and carrying out phosphoric acid anion exchange to prepare the phosphoric acid functionalized porous polyion liquid. The phosphoric acid functionalized porous polyion liquid has the characteristics of high U (VI) adsorption capacity, excellent selectivity and environmental friendliness, uranium-containing wastewater can be efficiently treated, and the problems that a traditional adsorption material is low in adsorption capacity, insufficient in selectivity and large in use amount of an organic solvent are solved.
Owner:EAST CHINA UNIV OF TECH

BCB photoresist and preparation method thereof

The invention discloses a BCB photoresist and a preparation method thereof, and belongs to the technical field of photoresists. Comprising the following raw materials in parts by weight: 60-70 parts of modified BCB resin, 20-30 parts of a solvent, 1-3 parts of anthraquinone-2-sodium sulfonate and 5-9 parts of triallyl isocyanurate. Wherein the modified BCB resin is prepared from the following raw materials: 4-vinyl benzocyclobutene, p-divinyl benzene, an RAFT (Reversible Addition-Fragmentation Chain Transfer) reagent and an anti-impact modifier, and the anti-impact modifier not only improves the impact resistance of the cured photoresist, but also has photosensitivity and broadens the ultraviolet response range; sodium anthraquinone-2-sulfonate is added into the raw materials of the BCB photoresist as a nano sensitizer, so that the ultraviolet absorption is further enhanced, and the developing contrast is improved; in conclusion, the photoresist prepared by the invention has both impact resistance and photosensitivity, is stable in performance, and has important application value in the technical field of photoresist.
Owner:BEIJING GUANGYIN POLYMER TECHNOLOGY CO LTD

Detection method for volatile methylsiloxane in microenvironment air, acquisition equipment and application of detection method and acquisition equipment

The invention relates to the technical field of environment monitoring, and discloses a detection method and collection equipment for volatile methylsiloxane in microenvironment air and application of the detection method and collection equipment. According to the equipment disclosed by the invention, a solid-phase extraction column, an adapter, a connecting pipe and a sampling pump are connected in sequence; a sieve plate for supporting the filler and preventing the filler from escaping is arranged in the solid-phase extraction column; a filler of the solid-phase extraction column is a modified polystyrene-divinyl benzene copolymer, and the surface of the filler is modified by 0.5-10wt% of non-ionizable hydroxyl. According to the invention, simultaneous sampling and efficient detection of as many as 13 components of cyclic and chain siloxane (D4-D9, L3-L9) are realized; the adsorption and elution efficiency is remarkably improved, complete desorption can be realized only by about 2.0 mL of eluent, and the dosage of an organic solvent is reduced; the method can maintain high recovery rate and repeatability, and is suitable for rapid and sensitive detection of siloxane in indoor microenvironment air.
Owner:BEIJING NORMAL UNIV AT ZHUHAI

Resin catalyst for synthesizing CPME as well as preparation method and application of resin catalyst

The invention discloses a resin catalyst for synthesizing CPME and a preparation method and application thereof, and belongs to the technical field of fine chemical catalysis, and the preparation method comprises the following steps: by taking styrene, divinyl benzene and 4-vinyl cyclohexene as monomers, carrying out suspension copolymerization in the presence of a pore-foaming agent, a dispersing agent, an initiator and a water-phase polymerization inhibitor to prepare a copolymer white ball, and then carrying out extraction, washing and drying to obtain the resin catalyst for synthesizing CPME. And drying, screening, sulfonating with sulfur trioxide, and washing to obtain the product. According to the invention, a third monomer 4-vinyl cyclohexene is introduced into a traditional styrene-divinyl benzene copolymerization system, and the rigid cyclic structure can significantly enhance the thermal stability of a resin skeleton; the perfluorinated chain segments in the dispersant can be directionally arranged to the surfaces of resin particles in the polymerization process to form a hydrophobic protection layer, so that the stability of a catalyst and the selectivity of cyclopentene at a relatively high temperature can be remarkably improved.
Owner:DAN DONG MING ZHU TE ZHONG SHU ZHI YOU XIAN GONG SI

Ink composition and ink jet recording method

Provided is an ink composition containing a water-insoluble colorant, a dispersant, a resin A, a resin B, and water, the resin A being a resin obtained by polymerizing at least a C1-C4 alkyl methacrylate and a C2-C6 alkyl acrylate, and the resin B being a resin obtained by polymerizing at least a styrene monomer and divinyl benzene. In addition, the present invention provides an ink jet recording method using the ink composition, a recording medium to which the ink composition is adhered, and an ink jet printer provided with a container filled with the ink composition.
Owner:NIPPON KAYAKU CO LTD

Organic polymer carrier, ethylene oligomerization catalyst system and preparation method and application thereof

The invention provides an organic polymer carrier, an ethylene oligomerization catalyst system and a preparation method and application thereof. The organic polymer carrier is obtained by copolymerizing divinyl benzene and a monomer containing a polydentate pyridine imine ligand; wherein the monomer containing the polydentate pyridine imine ligand has a structure as shown in a formula I: # imgabs0 #, in the formula I, two R1 are the same or different and are independently selected from H, halogen, C1-C7 alkyl groups and derivatives thereof, and C6-C10 aryl groups and derivatives thereof; x is 0-3. The catalyst system has good ethylene oligomerization activity and alpha-olefin selectivity, and is long in service life.
Owner:PETROCHINA CO LTD

Organic polymer carrier, ethylene oligomerization catalyst system and preparation method and application thereof

The invention provides an organic polymer carrier, an ethylene oligomerization catalyst system and a preparation method and application thereof. The organic polymer carrier is obtained by copolymerizing divinyl benzene and a monomer containing a bidentate pyridine imine ligand; wherein the monomer containing the bidentate pyridine imine ligand has a structure as shown in a formula I: # imgabs0 #, in the formula I, R1 and R2 are respectively and independently selected from H, halogen, C1-C7 alkyl and derivatives thereof; r3 is selected from H, halogen, C1-C7 alkyl groups and derivatives thereof, and C6-C10 aryl groups and derivatives thereof; r4 is selected from H, C1-C4 alkyl and derivatives thereof; x is 0-3. The catalyst system has good ethylene oligomerization activity and alpha-olefin selectivity, and is long in service life.
Owner:PETROCHINA CO LTD

A preparation process and method of chloro(bromo)styrene

The invention discloses a process and method for preparing chloro(bromo)styrene by dehydrating chloro(bromo)phenylethanol using a pipeline reactor, wherein the process uses a nitrated sulfonic acid resin as a catalyst, and the catalyst preparation process is to sulfonate the resin beads obtained by polymerizing divinylbenzene, and then introduce a nitro group to further enhance the acidity of the resin catalyst to improve the activity of the catalyst. The process of the present invention uses a pipeline reactor to realize the conversion of chloro(bromo)phenylethanol to chloro(bromo)styrene, and the process is simple, the operating conditions are mild (reaction temperature 100-220°C, reaction pressure is normal pressure), the catalyst activity is high, and the product selectivity is good.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Hafnium carbide precursor and preparation method thereof

PendingCN121495042ABenzoleMaterials science
The invention belongs to the field of superhigh-temperature ceramic materials, and particularly relates to a hafnium carbide precursor and a preparation method thereof.The preparation method comprises the steps that n-propyl alcohol hafnium and two special modified compounds are mixed in an inert atmosphere, dicumyl peroxide, benzophenone, triethanolamine and divinyl benzene are added for stirring, and the hafnium carbide precursor is obtained; adding tetrahydrofuran, stirring at a constant temperature to form a homogeneous solution, and finally filtering to obtain a precursor; the two modified compounds are vinyl tris (diethylamino) hafnium and acryloyloxy dibenzoyl hafnium complexes respectively, and the preparation method is realized through substitution reaction of hafnium tetrachloride and amine compounds and coordination reaction of n-propanol hafnium, dibenzoylmethane and acryloyl chloride respectively. The obtained hafnium carbide precursor contains a hafnium source, a modified compound, a cross-linking agent and a solvent, through molecular design, the ceramic yield is remarkably increased, the cracking temperature is reduced, the oxidation resistance and sintering density of final ceramic are improved, and the preparation method is suitable for preparing an ultra-high-temperature ceramic material.
Owner:FORSMAN TECH (BEIJING) CO LTD

Hydrogenated asymmetric long-chain branched sbs polymer and method for its preparation

This invention discloses a hydrogenated asymmetric long-chain branched SBS polymer and its preparation method. The polymer is obtained by selective hydrogenation of a branched styrene-butadiene / divinylbenzene-styrene triblock copolymer with high vinyl content and asymmetric long chains. The polymer exhibits a bimodal narrow distribution and a dendritic structure with asymmetric long-chain branching. It possesses characteristics such as high oil fillability, high oil retention, low deformation, high cohesiveness, and high tensile strength, exhibiting superior overall physical properties compared to existing SEBS.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Hybrid nano self-repairing agent, preparation method, antifriction lubricating grease and application

The invention discloses a hybrid nano self-repairing agent and a preparation method thereof, anti-friction lubricating grease and application, and belongs to the field of mechanical lubrication.The preparation method of the hybrid nano self-repairing agent comprises the steps that firstly, composite nano metal particles CoCuAg are synthesized; 2, the surface of CoCuAg is coated with a SiO2 / Al2O3 nano inorganic modified coating, and a CM composite material of a core-shell layer structure is obtained; 3, placing the CM composite material in a mixed solvent of deionized water and absolute ethyl alcohol, and adding polyvinyl alcohol to obtain a surface modified CM solution; ethyl cellulose, sodium dodecyl benzene sulfonate and polyvinylpyrrolidone are added into the surface modified CM solution, and a prepolymer CM solution is obtained; heating the prepolymer CM solution, adding methyl acrylate, methyl methacrylate, benzoyl peroxide and divinyl benzene, and reacting to obtain the organic / inorganic hybrid PCM nano self-repairing agent. The invention provides lubricating grease specially designed for industrial mechanical friction equipment. The lubricating grease has excellent wear resistance and excellent self-repairing capability.
Owner:JINLING INST OF TECH

An activated carbon-based hard carbon material, a preparation method and application thereof

The application provides a kind of hard carbon material based on activated carbon and its preparation method and application, it is related to electrochemical energy storage technical field.The preparation method of hard carbon material based on activated carbon includes: activated carbon is dipped in initiator, is obtained after stirring, drying mixed material;The mixed material is pre-crosslinked with vinyl monomer, then the pre-crosslinked product is heat treated, finally carbonization;The vinyl monomer includes one or more of styrene, divinyl benzene, methyl acrylate, 1,4-butadiene, propylene, acrylonitrile, ethyl acrylate, acrylic acid, acrylamide.The hard carbon material provided by the application is prepared by the preparation method.The hard carbon material provided by the application is used for lithium, sodium ion battery negative material.After activated carbon is filled with vinyl monomer, crosslinking and carbonization, the hard carbon material is prepared, and the electrochemical performance and cycle life are better, the sodium storage capacity is excellent, and it is a better lithium, sodium ion battery negative material.
Owner:INST OF COAL CHEM CHINESE ACAD OF SCI

A medical high-barrier packaging film and a preparation method thereof

The application discloses a kind of medical high-barrier packaging film and preparation method, it is related to packaging film field.The application is when preparing medical high-barrier packaging film, mica sheet is grafted [3-(trimethoxysilyl) propyl] succinic anhydride after with glycerol phosphocholine, maleic anhydride reaction and obtain modified mica sheet;1.4-pyrazine dimethylaldehyde and 4-amino-3-mercapto benzoic acid are reacted and copolymer is obtained;Then caprolactam, 1,4-diamino-2,5-divinyl benzene and copolymer are reacted and polyamide particle is obtained;Polyamide particle and modified mica sheet are reacted and medical high-barrier packaging film is obtained.The medical high-barrier packaging film prepared by the application has excellent barrier property, antifouling property, antibacterial property and mechanical property.
Owner:JIANGSU ZHONGJIN MATAI MEDICINAL PACKAGING

Organic polymer carrier, Z-N catalyst and preparation method and application thereof

The invention provides an organic polymer carrier, a Z-N catalyst and a preparation method and application thereof. The organic polymer carrier is obtained by copolymerizing monomers including divinyl benzene and unsaturated 1, 3-propylene glycol ether monomers; wherein the unsaturated 1, 3-propylene glycol ether monomer has a structure as shown in a formula I: # imgabs0 #, and the catalyst has the characteristics of good olefin insertion, stereotactic ability, catalyst activity, narrow molecular weight distribution and the like.
Owner:PETROCHINA CO LTD