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99 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.

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

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

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

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

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

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

Preparation method and application of novel benzyl cinnamate-vinyl toluene mixed matrix neutron / gamma discrimination plastic scintillator

The invention discloses a preparation method and application of a novel benzyl cinnamate-vinyl toluene (PVT) mixed matrix neutron / gamma discrimination plastic scintillator. The plastic scintillator is composed of a polymer matrix, a main fluorescent dye, a secondary fluorescent dye, a cross-linking agent and an initiator, the polymer matrix is benzyl cinnamate (RG) and vinyl toluene, the main fluorescent dye is 2, 5-diphenyloxazole (PPO), the secondary fluorescent dye is 7-diethylamino-4-methylcoumarin (MDAC), and the initiator is an initiator. The crosslinking agent is divinyl benzene (DVB), and the initiator is azodiisobutyronitrile (AIBN). The prepared plastic scintillator is polymerized based on a novel organic polymer matrix, and has good transparency. Compared with a plastic scintillator of the same type, the preparation time is greatly shortened by using the substrate, and the preparation efficiency is improved.
Owner:XIANGTAN UNIV

Resin particles, metal-coated particles, and resin material

Provided are resin particles capable of enhancing gap controllability of a connection structure when exposed to a high temperature environment. The resin particles according to present invention contain a polymer of polymerizable components. The polymerizable components include divinylbenzene and a (meth)acrylate compound having four or more (meth)acryloyl groups. The resin particles have a compression elastic modulus of 1000 N mm2 or more when compressed by 20% at 200°C.
Owner:SEKISUI CHEMICAL CO LTD

A chloramphenicol-containing organic porous polymer catalyst and a synthesis method and application thereof

The application provides a chloramphenicol-containing organic porous polymer catalyst and a synthesis method and application thereof, and belongs to the technical field of organic synthesis. The polymer catalyst comprises intermediates A, B and C, the intermediates A and B are styrene and divinylbenzene isomer mixtures respectively, and the intermediates A, B and C are synthesized through a polymerization reaction under the action of a free radical initiator. The polymer catalyst is a heterogeneous catalyst with a chloramphenicol chiral skeleton structure, can be synthesized by taking industrial waste chloramphenicol as a starting material, has the advantages of low cost, good catalytic efficiency, high enantioselectivity and multiple recycling, etc. The asymmetric catalytic synthesis using the catalyst can separate and recycle the catalyst from the reaction system through a simple filtration operation, has the technical advantages of simple experimental operation steps, recyclable catalyst, etc. The chloramphenicol polymer catalyst has good industrial application prospect when applied to the asymmetric alcoholysis ring-opening of a cyclic anhydride.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Preparation method of organic silicon hybrid porous resin microspheres for liquid chromatography, microspheres and application

The present application relates to a kind of organic silicon hybrid porous resin microspheres for liquid chromatography, the resin microspheres are polydivinyl benzene-g-methacryloyl oxy propyl trimethoxysilane porous resin microspheres, specifically, the copolymer of divinyl benzene and g-methacryloyl oxy propyl trimethoxysilane, and the particle size of microsphere is 30-40 μm.The specific surface area of original microsphere is 600-900 m 2 / g, and the specific surface area can reach 1000-1200 m 2 / g after crosslinking treatment.The resin microspheres of the present application are prepared by suspension polymerization method, which is simple and easy to scale up.The prepared original microspheres have good mechanical strength and contain a large number of reaction sites for modification, which can be modified according to different needs and suitable for different separation systems.
Owner:EAST CHINA UNIV OF SCI & TECH +1

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

The application provides an organic polymer carrier, a Z-N catalyst and a preparation method and application thereof. The organic polymer carrier is obtained by copolymerization of monomers including divinylbenzene and unsaturated catechol ester monomers; wherein the unsaturated catechol ester monomer has a structure shown in formula I: the catalyst has good stereodirecting ability, and when used for propylene homopolymerization, the obtained polypropylene has high stereoregularity and relatively wide molecular weight distribution characteristics.
Owner:PETROCHINA CO LTD

Anion chromatographic stationary phase based on carbon dot modified polystyrene-divinyl benzene and preparation method of anion chromatographic stationary phase

The invention discloses an anion chromatographic stationary phase based on carbon dot modified polystyrene-divinyl benzene and a preparation method of the anion chromatographic stationary phase. The stationary phase is prepared through a CDs agglomeration method or a CDs grafting method. The CDs agglomeration method comprises the following steps: quaternizing CDs, agglomerating the CDs on the surfaces of sulfonated PS-DVB microspheres through electrostatic interaction, and then carrying out hyperbranched modification to obtain the CDs agglomeration type PS-DVB anion chromatography stationary phase. The CDs grafting method comprises the following steps: grafting CDs on the surfaces of PS-DVB microspheres through covalent bonds by taking glycidyl methacrylate as an intermediate medium, and then carrying out hyperbranched modification to obtain the CDs grafted PS-DVB anion chromatography stationary phase. The stationary phase developed by the invention shows good application potential in the field of trace analysis of complex samples, and is expected to play an important role in actual analysis and detection work.
Owner:ZHEJIANG UNIV OF TECH

High-performance humidity sensing liquid as well as preparation method and application thereof

The embodiment of the invention discloses high-performance humidity sensing liquid as well as a preparation method and application thereof. The humidity sensing liquid is prepared from the following components in parts by weight: 5 to 8 parts of polyvinylpyrrolidone K-90, 0.5 to 1.5 parts of divinyl benzene, 3 to 4 parts of lithium chloride and 100 parts of distilled water. A humidity sensing film prepared from the humidity sensing liquid can keep a complete structure and stable performance at the high temperature of 260 DEG C, not only has excellent high temperature resistance, but also synchronously realizes high humidity response sensitivity, high detection precision and good long-term stability. The humidity sensing liquid can directly meet the humidity detection requirements of high-temperature scenes such as desulfurization and denitrification equipment, high-temperature flues and drying equipment in a steel mill, and has a wide application prospect.
Owner:BEIJING KUNLUN ZHONGDA SENSOR TECH CO LTD

A temperature-resistant and salt-resistant slow-expanding microsphere based on double emulsion, and a preparation method and application thereof

The application discloses a kind of temperature-resistant salt-tolerant slow swelling microspheres based on double emulsion and preparation method and application, it is related to oilfield chemical technical field, preparation method includes the following steps: emulsifier is weighed and dissolved in deionized water, ultrasonic dispersion is uniformly, then acrylamide, sulfonic monomer, hydrophobic monomer, polyoxyethylene ether functional monomer, di-vinyl benzene and initiator are added into the dispersion solution of emulsifier respectively, and water phase is prepared by stirring, water phase is slowly added into inner oil phase, and oil-in-water primary emulsion is obtained by high-speed stirring, then oil-in-water primary emulsion is added into outer oil phase and stirred to obtain double emulsion.Double emulsion is deoxidized by nitrogen, and the product is collected after aging at room temperature after stirring polymerization, washed, air-dried to constant weight, and temperature-resistant salt-tolerant slow swelling microspheres are obtained;In the application, the temperature-resistant salt-tolerant slow swelling microspheres prepared based on double emulsion template have spatial isolation effect of annular liquid film, the amphiphilic environment of emulsion provides multiphase reaction space for the synthesis of microspheres, and the microspheres have uniform particle size and excellent dispersity.
Owner:SOUTHWEST PETROLEUM UNIV

Magnetic lead ion imprinted polymer material as well as preparation method and application thereof

The invention discloses a magnetic lead ion imprinted polymer material as well as a preparation method and application thereof, and belongs to the technical field of magnetic ion imprinted materials. According to the method, 1, 3, 5-tri (4-aminophenyl) benzene and 2, 5-divinyl-1, 4-phthalaldehyde are adopted as monomers, and the magnetic COF material with high porosity is successfully constructed on the surface of Fe3O4 (at) SiO2 (at) KH-570 through Schiff base reaction. A magnetic COF material is used as a substrate, through a surface imprinting strategy, double bonds on the surface of the magnetic COF material and vinylpyridine are subjected to an ion imprinting polymerization reaction, and the ion imprinting-magnetic covalent organic framework material (MCOF (at) IIP) is prepared. The method has the advantages of being simple and rapid to operate, mild in reaction condition and easy to control, and the prepared product is high in porosity, good in stability and high in adsorption selectivity and has wide application prospects in the aspects of adsorption removal and extraction separation of heavy metal ions.
Owner:HUANGGANG NORMAL UNIV +1

Immobilized catalyst for synthesis of gamma-chloropropyltrichlorosilane and preparation method thereof

The invention provides an immobilized catalyst for synthesis of gamma-chloropropyl trichlorosilane and a preparation method of the immobilized catalyst. The preparation method of the catalyst comprises the following steps: (1) mixing octavinyl-POSS, divinyl benzene and diallylamine in a solvent, and reacting under the initiation of AIBN to obtain POSS-DVB-N; and (2) mixing the POSS-DVB-N with chloroplatinic acid, reacting at 50-100 DEG C for 1-6 hours, filtering and drying to obtain the POSS-DVB-N / chloroplatinic acid composite material. The heterogeneous catalyst POSS-DVB-N-Pt provided by the invention has excellent oxygen resistance, selectivity and cycle stability, gamma-chloropropyl trichlorosilane can be successfully synthesized under normal pressure and without inert gas protection, and the yield is up to 95% or above.
Owner:江西晨光新材料股份有限公司 +1

Highly branched asymmetric styrene-butadiene-styrene copolymer and its preparation method and use in shoe soles

The application discloses a kind of highly branched asymmetric styrene-butadiene-styrene copolymer and its preparation method and application in shoe sole.The highly branched asymmetric styrene-butadiene-styrene copolymer of the application has three-dimensional network structure, which is asymmetric styrene-butadiene-styrene copolymer as arm, divinylbenzene as coupling core point, with high degree of branching, good oiling performance, good processing performance and other characteristics, blending granulation with polystyrene, processing operating oil and the like, without vulcanization, shoe sole product can be obtained by injection molding or compression molding process, simple and environment-friendly process, DIN abrasion of product is less than 70mm 3 , dry and wet skid friction coefficient is greater than 0.8, and can be widely applied in high wear-resistant, high non-slip shoe sole.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Amphoteric ion exchange resin as well as preparation method and application thereof

The invention provides amphoteric ion exchange resin and a preparation method and application thereof, and relates to the technical field of resin separation and purification, the preparation method comprises the following steps: (1) uniformly mixing styrene, divinyl benzene, N-vinyl pyrrolidone, a primary amine group-containing monomer, a quaternary amine group-containing monomer, an initiator and a pore-foaming agent to obtain an oil phase; (2) uniformly mixing the oil phase with an aqueous solution of a dispersing agent, and initiating polymerization reaction to obtain initial resin microspheres; (3) dispersing the initial resin microspheres in an organic solvent, and adding a polysuccinimide solution for reaction to obtain grafted resin microspheres; and (4) dispersing the grafted resin microspheres in an organic solvent, and adding beta-alanine, triethylamine and water for hydrolysis reaction to obtain the amphoteric ion exchange resin. The zwitter-ion exchange group loading capacity of the prepared zwitter-ion exchange resin can be controlled and adjusted, and the zwitter-ion exchange resin has excellent hydrophilicity and biocompatibility and meets the requirements of more application scenes of the zwitter-ion exchange resin.
Owner:SHENZHEN POLYTECHNIC

Resin composition, prepreg and application of prepreg in rigid-flex printed circuit board

PendingCN121517885AAcenaphthyleneDielectric
The invention provides a resin composition, a prepreg and application of the prepreg in a rigid-flex printed circuit board, and the resin composition comprises the following components by weight: 10-100 parts of polyphenyl ether resin; 10 to 50 parts by weight of a styrene-divinyl benzene copolymer; 5 to 40 parts by weight of a styrene-butadiene-styrene block copolymer; 5 to 40 parts by weight of an acenaphthylene-styrene-divinyl benzene copolymer; the molar percentage of a styrene unit in the styrene-divinyl benzene copolymer is 5 to 90 percent; the molar percentage of a styrene unit in the styrene-butadiene-styrene block copolymer is 15 to 70 percent; the molar percentage of a styrene unit in the acenaphthylene-styrene-divinyl benzene copolymer is 15 to 80 percent. Through cooperation of polyphenyl ether resin and three copolymers, the dielectric property, heat resistance, copper foil adhesion, reactivity and CVL film adhesion of the resin composition are regulated and controlled, and the resin composition with excellent and extremely low dielectric property, heat resistance, non-fluidity and high adhesion is obtained.
Owner:SHENGYI TECH SUZHOU

A bifunctional polymer-based ammonia adsorbent and a method for preparing the same

The application discloses a kind of dual-functional polymer-based ammonia adsorbent and preparation method thereof, which can efficiently adsorb low-concentration ammonia.The application is prepared by the following steps: first, quaternary ammonium reaction of vinyl imidazole and functional halogenated alkane, then chelation reaction of metal chloride, so that the product is dual-functional, then free radical copolymerization reaction of di-vinyl benzene, to obtain dual-functional polymer-based ammonia adsorbent with porous structure.The obtained polymer-based adsorbent contains weak acidic group and metal ion, and has ultra-high adsorption capacity for low-concentration ammonia (adsorption capacity for 3 vol.% ammonia can be as high as 10.8 mol / kg), and excellent regeneration performance and ammonia adsorption selectivity.The dual-functional polymer of the application has high adjustability of functional groups, and has good industrial application potential.
Owner:FUZHOU UNIV

Catalyst, preparation method thereof and method for catalytically synthesizing triacetonamine by using catalyst

The invention belongs to the technical field of material synthesis, and discloses a catalyst, a preparation method thereof and a method for catalytically synthesizing triacetonamine by using the catalyst. The catalyst comprises a styrene-divinylbenzene copolymer skeleton, acetylacetone metal salt crosslinked on the styrene-divinylbenzene copolymer skeleton through chemical bonds, and acidic sites loaded on the styrene-divinylbenzene copolymer skeleton. The preparation method comprises the following steps: step 1, preparing a styrene-divinylbenzene copolymer skeleton; uniformly stirring styrene or a styrene derivative, divinyl benzene, a pore-foaming agent and an initiator to obtain an oil phase; step 2, dissolving acetylacetone metal salt in a solvent, and uniformly mixing with the oil phase to obtain an oil phase system; step 3, mixing the dispersing agent solution and the polymerization inhibitor solution to obtain a water phase system; step 4, putting the oil-phase system into the water-phase system to prepare resin pellets; step 5, acidification; and 6, washing and drying. When the catalyst disclosed by the invention is used for catalytically synthesizing triacetonamine, the conversion rate is high, and the selectivity is strong.
Owner:NANKAI UNIV

A biomass gel and its preparation method and application

The present application relates to the field of gel material, disclose a kind of biomass gel and its preparation method and application, the method comprises: (1) in inert atmosphere 1, in the presence of mixed solvent 1, polyether, 2-acrylamide-2-methylpropane sulfonic acid, dimethylaminoethyl methacrylate, divinyl benzene and initiator are polymerized to obtain intermediate;(2) in inert atmosphere 2, in the presence of mixed solvent 2, the intermediate is crosslinked with biomass raw material, ferric salt, to obtain biomass gel;The biomass raw material is selected from at least one of alkali lignin, dealkalized lignin, sodium lignosulfonate, calcium lignosulfonate, tannic acid, cellulose and inulin;Using the method of the application, a kind of biomass gel resistant to high temperature, salt and not easy to dissociate can be prepared.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)