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83 results about "Oxygen inhibition" patented technology

Oxygen inhibition occurs when dissolved oxygen can act as a comonomer in a free-radical cure. Addition of oxygen to the growing polymer radical results in the formation of a relatively inactive peroxy radical. Oxygen inhibition is a potential problem of cures conducted in the open air.

Optical cement with dynamic bond exchange and gradient curing functions and preparation method thereof

The invention discloses an optical adhesive with dynamic bond exchange and gradient curing functions and a preparation method thereof, relates to an optical adhesive, and aims to solve the problems of interface failure and light transmission attenuation which are easy to occur in the existing optical adhesive. The invention starts from the following three points: 1, two-stage dynamic covalent cross-linking: 1, UV (ultraviolet) initiates acrylate polymerization to form a main network; part of unreacted epoxy groups are retained. 2, thermally activating dynamic boric acid ester bond exchange to realize network reconstruction and stress release; 2, a dual-wavelength gradient initiation system: a 365nm UV curing surface and a 405nm LED penetrate through a curing deep layer to avoid an uncured layer caused by oxygen inhibition; 3, a nano composite anti-reflection technology: mesoporous SiO (at) TiO core-shell nanoparticles (refractive index gradient matching) improve the light transmittance to gt; the content is 99.5%.
Owner:JIANGXI LIANGUAN NEW MATERIAL TECH CO LTD

UV photocuring hydrophobic antibacterial material for bathroom and preparation method thereof

The invention belongs to the field of bathroom materials, and discloses a UV photocuring hydrophobic antibacterial material as well as a preparation method and application thereof. The purpose of photocuring is achieved by introducing photocurable sulfydryl and vinyl into organic zirconium nanoparticles, titanium dioxide nanoparticles and organic silicon resin: the sulfydryl and vinyl are subjected to click reaction under the irradiation of ultraviolet light, so that the photocuring is rapid, the photocuring is not afraid of oxygen inhibition, the curing can be carried out in the air, and the use is more convenient and rapid. The introduction of the organic zirconium nanoparticles improves the hardness of the material, the introduction of the zwitterion modified titanium dioxide nanoparticles endows the material with antibacterial property, the introduction of the organic silicon resin improves the hydrophobic property of the material, and the prepared photocuring material has extremely high hardness, good adhesion and excellent hydrophobic and antibacterial properties. The hydrophobic antibacterial material is especially suitable for bathrooms.
Owner:KAIPING YUFA SANITARY WARE CO LTD +1

High chromaticity pigment flakes and foils

An article including at least one first metallic layer, at least one dielectric layer; and at least one second metallic layer is disclosed. The at least one dielectric layer can include at least one of (i) a photo-initiator, (ii) an oxygen inhibition mitigation composition, (iii) a leveling agent, and (iv) a defoamer.
Owner:VIAVI SOLUTIONS INC(US)

Composite photo-initiation system electronic adhesive as well as preparation method and application thereof

The invention provides a composite photo-initiation system electronic adhesive as well as a preparation method and application thereof, and relates to the technical field of anisotropic conductive adhesive films. The adhesive comprises a thermoplastic resin solution, an acrylate monomer, epoxy resin, a polyfunctional oligomer solution containing a carbon-carbon double bond and an epoxy group, an insulating inorganic filler, conductive particles and a composite photoinitiator solution, wherein the composite photoinitiator is composed of a free radical photoinitiator and a cationic photoinitiator, and acrylate free radical chain polymerization and epoxy resin cationic ring opening polymerization are synchronously triggered through ultraviolet light; and the polyfunctional oligomer is used as a molecular bridge to bond the two-phase curing network to form an interpenetrating cross-linked structure. The electronic adhesive provided by the invention realizes low-temperature rapid curing for 1-15 seconds, the curing shrinkage rate is reduced to below 1%, the reliability defect caused by oxygen inhibition, high shrinkage rate and phase separation of a traditional single system is solved, and the electronic adhesive is suitable for low-temperature efficient packaging of high-precision electronic components.
Owner:GUTAI (JIANGSU) NEW MATERIALS CO LTD

Flame-retardant material for new energy automobile and preparation method of flame-retardant material

The invention discloses a flame-retardant material for a new energy automobile and a preparation method thereof, adipic acid, a modified monomer and hexamethylenediamine react to form a nylon structure, meanwhile, the nylon structure contains a modified filler, organophosphorus in the modified monomer and the modified filler can generate a large number of phosphorus-containing free radicals when the flame-retardant material is combusted, free radicals with high activity can be captured, and the flame-retardant material has a good flame-retardant effect. Sulfur, nitrogen and boron elements in the modified monomer and the modified filler are matched to generate a compact carbon layer on the surface layer of the material, so that oxygen is isolated, heat transfer is inhibited, incombustible gas is released to dilute the oxygen concentration, combustion is inhibited, and meanwhile, the modified filler has a very good smoke suppression effect; and smoke generated during combustion is reduced.
Owner:TIANJIN BAIMENG TECH DEV CO LTD

Organosilicone modified acrylic resin, UV-thermal dual-curing adhesive and preparation method of UV-thermal dual-curing adhesive

The invention relates to organosilicone modified acrylic resin, a UV-thermal dual-curing adhesive and a preparation method of the organosilicone modified acrylic resin. The organosilicone modified acrylic resin is obtained by reacting a bifunctional acrylate monomer and modified polysiloxane under the action of a polymerization inhibitor 1 and a catalyst 1; the modified polysiloxane is obtained by reacting hydrogen-containing silicone oil, allyl glycidyl ether and 1, 4-cyclohexanedimethanol divinyl ether under the action of a polymerization inhibitor 2 and a catalyst 2. The adhesive prepared by matching the organic silicon modified acrylic resin with auxiliaries such as a monomer and an initiator can be subjected to UV-heat dual curing, the surface is dry and comfortable after curing, the sticky'oxygen inhibition 'phenomenon is avoided, and the adhesive has good hardness; the adhesive force with various base materials including PC, aluminum materials, glass and PET is good; the shear strength retention rate of each base material after double 85 1000 hours of aging is 70% or above; the appearance is not obviously changed in a high-temperature aging test, and better heat resistance is shown.
Owner:GUANGZHOU BAIYUN CHEM IND +1

UV fixing glue for fixing photovoltaic module, preparation method and application

The invention provides a UV fixing adhesive for fixing a photovoltaic module, a preparation method and application, the UV fixing adhesive is characterized by comprising, by mass, 50-70% of polyurethane acrylic resin, 30-50% of a reactive diluent, 1-4% of a photoinitiator and 0-2% of fumed silica; the reactive diluent comprises an acrylic diluent and a thiol diluent in a mass ratio of (0.5: 1)-(6: 1); according to the selected polyurethane acrylic resin, the refractive index range of an acrylic acid diluent is 1.460 to 1.500, and the refractive index range of a mercaptan diluent is 1.500 to 1.525. According to the invention, the oxygen inhibition problem is solved by increasing the dosage of the photoinitiator and selecting the mercaptan diluent and the high-activity resin or monomer, meanwhile, the bright line problem is solved by selecting the resin or monomer within a certain refractive index range, and the trace problem is solved by selecting the yellowing-resistant and shrinkage-resistant resin or monomer, so that the glue has excellent curing and aging-resistant properties, and the service life of the glue is prolonged. And the light utilization rate of the photovoltaic module is improved.
Owner:CHANGZHOU SHICHUANG ENERGY CO LTD

Acrylate modified polyether block silicone oil and preparation method thereof

The invention discloses acrylate modified polyether block silicone oil and a preparation method thereof. The acrylate modified polyether block silicone oil is prepared by reacting an epoxy polyether monomer with hydrogen-containing silicone oil in the presence of a catalyst to synthesize epoxy polyether block silicone oil, the epoxy polyether block silicone oil reacts with (methyl) acrylic acid in the presence of a polymerization inhibitor and a catalyst to obtain the acrylate modified polyether block silicone oil. The acrylate modified polyether block silicone oil integrates the advantages of acrylate modified silicone oil and epoxy modified silicone oil, an acrylate functional group is short in curing time, an epoxy functional group is not subjected to oxygen inhibition and the like, and a polyether unit is directly grafted into a silicone oil structure, so that the problem of poor compatibility of a polyether diluting monomer and the acrylate modified silicone oil can be avoided. Epoxy polyether group modification can improve anchoring performance on a film / paper base material, end-position and side-position acrylic acid modification is higher in reaction activity compared with single acrylic acid modified silicone oil, curing efficiency can be improved, crosslinking degree can be increased, and residual adhesion rate can be increased.
Owner:HUIZHOU YONGZHUO TECH CO LTD

Click photocuring material as well as preparation method and application thereof

The invention relates to a click photocuring material as well as a preparation method and application thereof, and relates to the field of heat-conducting insulating materials. The click photocuring material is prepared from the following raw materials: a photocuring monomer, a bifunctional or polyfunctional sulfhydryl compound, a photoinitiator and a modified heat-conducting particle filler, the click photocuring material is prepared through a thiol-ene click reaction. Compared with a traditional free radical and cation photocuring system, the click photocuring material has the advantages that the problems of oxygen inhibition, initiator residue, volume shrinkage and the like do not exist.
Owner:AKM ELECTRONICS INDAL PANYU +1

Low-smoke flame-retardant PVC floor film and preparation method thereof

The invention relates to the technical field of polyvinyl chloride, and discloses a low-smoke flame-retardant PVC floor film and a preparation method thereof.The low-smoke flame-retardant PVC floor film is prepared from, by weight, 100 parts of polyvinyl chloride resin, 5-20 parts of epoxidized soybean oil antistatic flame retardant and the like. The epoxidized soybean oil antistatic flame retardant contains a large number of phosphate flame-retardant groups and a benzene ring structure with high char-forming property, combusted phosphate is pyrolyzed to generate phosphoric acid substances, dehydration of a floor film is promoted to form a carbon layer, oxygen can be isolated, smoke escape is inhibited, and good smoke suppression and flame retardant effects are achieved. The epoxidized soybean oil antistatic flame retardant contains hydrophilic carboxyl and quaternary ammonium salt groups, so that the water contact angle of a polyvinyl chloride film can be reduced, the surface resistivity is reduced, and the surface hydrophilicity and antistatic performance of a floor film are improved.
Owner:DONGGUAN CHANGHAO PLASTIC PROD CO LTD

Adhesive composition for dicing tape and dicing tape including the same

The present invention provides an adhesive composition for a dicing tape, which may prevent the success rate of chip pick-up from decreasing due to an oxygen inhibition phenomenon occurring in a dicing process, and a dicing tape including the same. The adhesive composition for a dicing tape includes an adhesive binder, a reducing agent, and a photoinitiator.
Owner:LG CHEM LTD

An ultraviolet light-cured oxygen block polymerization inhibition device

The utility model discloses a kind of ultraviolet light solidification oxygen inhibition inhibiting device, comprising: horizontal transport processing platform, suit sealing support, a pair of hydraulic sealing door, ultraviolet light solidification structure and oxygen inhibition inhibiting structure, the utility model relates to ultraviolet light solidification technical field, full-sealing inert environment control system, adopt double hydraulic sealing door and gas replacement device linkage, realize the oxygen content≤50ppm oxygen-free environment by flow valve accurate control, cooperate with gas detector real-time monitoring, effectively inhibit oxygen inhibition effect, significantly improve the solidification quality of light-cured material surface layer;Multi-dimensional motion adjusting mechanism, longitudinal and transverse two-way positioning system constructed by three-stage screw module, cooperate with the vertical lifting assembly of electromagnetic drive, realize the repeat positioning accuracy of ±0.05mm of spray head group, can be compatible with 50-300mm width range of workpiece adaptive processing.
Owner:TIANJIN SDORF NEW MATERIAL R & D CO LTD

Polypropylene flame-retardant plastic as well as preparation method and application thereof

The invention discloses polypropylene flame-retardant plastic as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The polypropylene flame-retardant plastic is prepared from the following raw materials in parts by mass: 70 to 80 parts of polypropylene, 15 to 25 parts of halogen-free flame retardant, 1 to 5 parts of flame-retardant synergist, 5 to 15 parts of flexibilizer, 0.1 to 0.5 part of antioxidant and 0.5 to 2 parts of lubricant. The halogen-free flame retardant with a specific structure is matched with the flame-retardant synergist, so that a compact and stable carbon layer can be formed on the surface of a polypropylene matrix, heat and oxygen are effectively isolated, and release of combustible gas is inhibited, so that the flame-retardant performance is remarkably improved, the combustion spreading speed is reduced, and the vertical combustion grade is improved.
Owner:WUHAI XINSHAN WENWU SPORTS TECH CO LTD

Acrylate polymer for OCA optical cement, single-layer OCA optical cement with gradient cross-linked structure, and preparation method and application of single-layer OCA optical cement

The invention provides an acrylate polymer for an OCA optical adhesive, a single-layer OCA optical adhesive with a gradient cross-linked structure and a preparation method and application, and relates to the technical field of optical adhesives, the oxygen inhibition effect in the UV curing process is ingeniously utilized, the gradient cross-linked structure with the upper portion being soft and the lower portion being hard is actively constructed in a single adhesive layer, and the single-layer OCA optical adhesive with the gradient cross-linked structure is obtained. Therefore, contradictory properties (such as softness / hardness, initial adhesion / high strength and filling / glue overflow resistance) are integrated, and the technical problem that the existing homogeneous OCA cannot give consideration to various properties is solved.
Owner:NINGBO EXCITON TECH +1

Yeast having high rubisco carboxylase activity and method for constructing the same

This invention aims to create a spatially isolated local reaction microenvironment for Rubisco by introducing a complete β-carboxysome microcompartment system. This design goal avoids oxygen inhibition, laying the foundation for ultimately achieving efficient and specific CO2 fixation. It provides a novel approach to overcome the fundamental problem of low efficiency of carbon-fixing enzymes in cytosols due to intense oxygen competition. By introducing the complete carboxysome system as a module, engineered yeast strains with high carboxylase activity and significantly improved ethanol production were obtained, providing a solid foundation for building next-generation yeast cell factories that produce high-yield ethanol using CO2 as a raw material.
Owner:HUAZHONG AGRI UNIV

A uv curable adhesive, its preparation method and curing process

The present application relates to the field of adhesive, especially to a kind of UV curing adhesive and preparation method and curing process, by weight parts, including the following components: modified polyurethane acrylate 30-50 parts, composite photoinitiator 3-8 parts, active diluent 20-40 parts, silane coupling agent 1-5 parts, auxiliary 0.5-3 parts;Modified polyurethane acrylate is side chain containing alkenyl end hydroxyl polysiloxane modified polyurethane acrylate, and its number average molecular weight is 2000-4000g / mol.The beneficial effects of the present application are: by the compounding of radical type and cationic photoinitiator, the surface curing of radical type photoinitiator is quickly realized, the cationic photoinitiator has the ability of anti-oxygen inhibition, can realize deep curing, avoid surface tack, ensure that adhesive layer is cured uniformly and completely, and the curing depth can reach more than 0.5mm.
Owner:DONGGUAN YIHUI ADHESIVE CO LTD

Micro-positive-pressure oxygen-prevention and retardation-of-polymerization silk-covered wire cable production line and production process thereof

This invention discloses a production line and process for silk-insulated wire and cable with gradient temperature control, micro-positive pressure, and oxygen inhibition, belonging to the field of silk-insulated wire processing technology. The production line is equipped with wire feeding, straightening, wrapping, varnish impregnation, UV curing, and winding equipment arranged coaxially and at the same height along the cable conveying direction. The UV curing equipment integrates a micro-positive pressure oxygen inhibition system and a segmented gradient constant temperature heating module. The system can construct and maintain a micro-positive pressure inert gas environment of 100-500 Pa gauge pressure within the curing chamber, effectively isolating oxygen and inhibiting the UV curing oxygen inhibition effect. The heating module can form a continuous linear temperature gradient field of 20℃ to 45℃±2℃ within the curing chamber. The low-temperature deep curing zone strengthens the curing of the inner layer of the insulating varnish, while the heated surface curing zone achieves post-crosslinking and curing of the coating surface, solving the industry pain point of asynchronous curing of the inner and outer layers of the insulating varnish.
Owner:ZHEJIANG TIANMA CABLE +1

A UV-moisture dual-cured high-temperature-resistant hot melt acrylic adhesive tape and a preparation process thereof

The application discloses a UV and moisture dual-cured high-temperature-resistant hot-melt acrylate pressure-sensitive adhesive tape and a preparation process thereof, and belongs to the technical field of high polymer materials. The pressure-sensitive adhesive tape comprises a base material and an adhesive layer. Raw materials of the adhesive layer comprise acrylate prepolymer containing a side chain containing a vinyl ether group, modified terpene resin containing a phenolic hydroxyl group, alicyclic epoxy functional silane, a cationic photoinitiator and an antioxidant. By controlling the molar ratio of the phenolic hydroxyl group and the vinyl ether, the tackifying resin is chemically grafted into the polymer network by using the cationic chain transfer reaction, and the double mechanism of the light-induced cationic polymerization and the acid-catalyzed moisture curing is combined, so that the problems of poor temperature resistance and oxygen inhibition of the traditional hot-melt adhesive are solved. The tape has excellent high-temperature shear resistance, high initial adhesion and deep curing characteristics, and the preparation process has good hot-melt processing stability.
Owner:ZHAOQING SENRONGDI NEW MATERIAL TECH CO LTD

Positive pole piece and preparation method thereof, secondary battery and electric equipment

The invention relates to the technical field of secondary batteries, in particular to a positive pole piece, a preparation method of the positive pole piece, a secondary battery and electric equipment. The positive pole piece comprises a positive current collector and a positive active layer, and the positive active layer comprises a positive active material, a conductive agent, a binder and an oxygen inhibition catalyst; the mass fraction A of the oxygen inhibition catalyst in the positive electrode active layer, the specific surface area S of the positive electrode active material and the porosity P of the positive electrode plate meet the following relational expression: A * S * P / 50 is more than 0.5 and less than 1.5. By controlling the parameters A, S and P of the positive plate to meet the specific relational expression of A * S * P / 50 being more than 0.5 and less than 1.5, the oxygen evolution reaction of the positive active material can be effectively inhibited, the structural stability of the positive active material is improved, the phase change problem is improved, and the phenomena of structural collapse and particle cracking are relieved, so that the cycle performance of the battery is improved.
Owner:LIYANG HINA BATTERY TECH CO LTD

Sulfydryl silicon resin, application thereof and organic silicon pressure-sensitive adhesive

The invention relates to the technical field of organic silicon materials, and discloses sulfydryl silicon resin, application thereof and an organic silicon pressure-sensitive adhesive, the sulfydryl silicon resin is obtained by catalyzing hydrolysis and polycondensation of an M-chain-link silane monomer, a T-chain-link silane monomer and a Q-chain-link silane monomer in an isopropanol aqueous solution of strong acid; the organic silicon pressure-sensitive adhesive is synthesized from sulfydryl silicon resin, double-end vinyl silicone oil and a free radical photoinitiator; the sulfydryl silicon resin is prepared from a silane end-capping reagent, sulfydryl silane, tetraethoxysilane and the like; a sulfydryl group is grafted to a silicon resin side chain to prepare the light-cured sulfydryl silicon resin, after light curing, the light-cured sulfydryl silicon resin can meet the application requirements of a light-cured organic silicon pressure-sensitive adhesive by utilizing a chemical reaction between sulfydryl and vinyl, and the problems of oxygen inhibition and the like existing in an acrylic acid light curing system are solved.
Owner:HUIZHOU UNIV

UV anaerobic adhesive based on composite initiator and preparation method thereof

The invention relates to the technical field of anaerobic adhesives, in particular to a UV anaerobic adhesive based on a composite initiator and a preparation method thereof.The UV anaerobic adhesive is at least prepared from, by weight, 55-75 parts of acrylate resin, 20-30 parts of diluting monomer, 1-5 parts of cationic photoinitiator, 0.5-5 parts of free radical photoinitiator, 1.5-3 parts of peroxide initiator and 2.5-6 parts of auxiliaries. And on the basis that the provided product is rapidly cured and molded after UV illumination, the oxygen inhibition effect is greatly reduced, the curing shrinkage rate is reduced, the bonding strength is improved, the limitation of a bonding material is also reduced, and the application range is wider.
Owner:YIK SHING TAT (SHENZHEN) NEW MATERIAL CO LTD

Anti-oxidation polymerization-inhibition high-temperature-resistant UV curing adhesive and preparation method thereof

The invention provides an anti-oxidation polymerization-inhibition high-temperature-resistant UV curing adhesive and a preparation method thereof. The anti-oxidation polymerization-inhibition high-temperature-resistant UV curing adhesive contains polyfunctional group mercaptan, tertiary amine and fumed silica. The anti-oxidation polymerization-inhibition high-temperature-resistant UV curing adhesive is prepared from the following raw materials: 40 to 60 parts of acrylate, 20 to 40 parts of acrylate monomer, 10 to 30 parts of polyfunctional group mercaptan, 1 to 5 parts of photoinitiator, 1 to 5 parts of tertiary amine, 1 to 10 parts of fumed silica and 1 to 3 parts of additive. On the basis of a'thiol-ene 'click reaction of thiol and acrylate, the oxygen inhibition effect of the curing adhesive is improved, acrylic acid chain type free radical polymerization is carried out, molecular chains are closely crosslinked, the structural strength and mechanical property of the curing adhesive are improved, and the curing adhesive is more resistant to high temperature. In the curing adhesive system, tertiary amine has an inhibition effect on oxygen inhibition, and fumed silica is used as a filler to enhance the mechanical strength and further improve the mechanical properties at high temperature. The anti-oxidation polymerization-inhibition high-temperature-resistant UV curing adhesive disclosed by the invention has the characteristics of rapid curing, good surface dryness, excellent mechanical properties, high temperature resistance and the like.
Owner:TRINA SOLAR CO LTD

Preparation method of sodium acrylate and derivative thereof and PEGDA (Polyethylene Glycol Diacrylate) copolymerized hydrogel

The invention relates to the technical field of high polymer materials, and discloses a preparation method of sodium acrylate and derivatives thereof and PEGDA (polyethylene glycol diacrylate) copolymerized hydrogel, which comprises the following steps: S1, carrying out deep deoxidization pretreatment on raw materials containing sodium methacrylate monomers, a polyethylene glycol diacrylate cross-linking agent and water, and preparing under the protection of inert gas to obtain a prepolymerized solution; s2, carrying out polymerization reaction by adopting a programmed thermal management process to obtain a gel prepolymer; s3, carrying out hot press molding treatment on the gel prepolymer to obtain cured hydrogel; and S4, carrying out multi-stage deep purification treatment on the cured hydrogel. According to the method disclosed by the invention, the three technical problems of oxygen inhibition, thermal runaway and toxic residue of products in free radical polymerization are effectively solved by systematically controlling a reaction source, a process and a product. The prepared hydrogel is high in batch-to-batch reproducibility, uniform in network structure and suitable for industrial large-scale production, and the biocompatibility reaches the medical implantation level standard.
Owner:梁杰

Method for preparing 3,3',4,4'-benzophenonetetracarboxylic acid

The present invention discloses a method for oxidizing 1,1-bis-(3,4-dimethylphenyl)-alkane with nitric acid in a pressure vessel to produce 3,3',4,4'-benzophenonetetracarboxylic acid and simultaneously form nitric oxide, wherein the nitric oxide is sent from the pressure vessel to an absorption vessel, and the nitric oxide in the absorption vessel reacts with molecular oxygen and water to generate an aqueous nitric acid solution, thereby preventing the emission of nitric oxide and avoiding the risk of oxygen inhibiting the oxidation of nitric acid. Furthermore, when the nitric acid from the absorption vessel is used to oxidize the 1,1-bis-(3,4-dimethylphenyl)-alkane, the consumption of nitric acid is reduced.
Owner:EVONIK FIBERS

A modulus uv-controllable dual-curing conductive adhesive film and a preparation method and application thereof

The application discloses a modulus UV-controllable double-curing conductive adhesive film and a preparation method and application thereof, and belongs to the technical field of electronic packaging materials. The conductive adhesive film comprises an A component, a B component and a conductive filler. The A component comprises a functional acrylate copolymer prepared from a monomer mixture through solution polymerization. The monomer mixture comprises soft monomers, hard monomers, hydroxyl-containing monomers, epoxy-containing monomers, polymerizable benzophenone photoinitiators, silane coupling agents and free radical polymerization initiators. The B component comprises one or a combination of latent epoxy curing agents, conductive accelerators, curing accelerators and anti-settling agents. The application completely solves the problem of oxygen inhibition, realizes controllable adjustment of the modulus and pressure sensitivity of the adhesive film, has no small molecule residue, has excellent conductive performance and good storage stability.
Owner:NANTONG GAOMENG NEW MATERIAL

Nano plastic removing oil and preparation method thereof

The invention relates to the technical field of plastic removal processes, and discloses nano plastic removal oil and a preparation method thereof, the plastic removal oil comprises the following components: 8-12 wt% of a photoinitiator, 48-52 wt% of modified polyurethane acrylate, 8-10 wt% of modified polyester acrylate, 25-28 wt% of an active monomer, 0.4-0.6 wt% of a leveling agent, 0.8-1.0 wt% of a surface energy increasing agent, 1.6-2.0 wt% of an oxygen inhibition inhibitor, and 0.4-0.6 wt% of a defoaming agent. The preparation method of the nano plastic-removing oil is simple and convenient to operate, all the components are stirred and mixed step by step, the temperature, the proportion and the stirring speed are accurately controlled, and it is ensured that the performance of the nano plastic-removing oil is stable. The preparation method comprises the following steps: proportionally blending monomers into an agent A for later use, and blending modified polyurethane acrylate and the like into an agent B for later use; adding the photoinitiator into the agent A, heating, stirring and dissolving, adding the agent B, and uniformly stirring; and finally, adding auxiliaries, uniformly stirring, filtering and barreling. According to the method, all the components are fully reacted and uniformly dispersed, and the product quality and performance are guaranteed.
Owner:HUIZHOU JIAMAI NEW MATERIAL TECHNOLOGY CO LTD

Denitrification nitrogen removal complex microbial inoculant strain incubator

The utility model belongs to the technical field of denitrifying nitrogen removal complex microbial inoculant culture, in particular relates to a denitrifying nitrogen removal complex microbial inoculant strain culture box, and aims to solve the problems that the reaction rate of denitrifying bacteria is influenced by oxygen entering the culture box in the opening and closing process of a box door and the culture and growth of the denitrifying bacteria are not facilitated due to the lack of an oxygen inhibition mechanism in the culture box. According to the scheme, the culture box comprises a culture box body, a sealing door is rotationally installed at a box opening of the culture box body, a plurality of trays are arranged in the culture box body, a plurality of culture dishes are placed on the trays, and a rotating assembly is arranged in the culture box body and used for driving the trays to rotate. When the incubator is used, the oxygen absorbent is used for inhibiting the content of oxygen in the incubator body, so that the activity of denitrifying bacteria is ensured, the content of the oxygen in the incubator body is rapidly inhibited through the matched use of the infusion pump and the annular atomizing spray head, and the situation that the reaction rate of the denitrifying bacteria is influenced by the oxygen brought in when the sealing door is opened is avoided.
Owner:BEIJING TESI ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD

Photosensitive resin composition for flexographic printing plate and flexographic printing plate produced using the same

To provide a photosensitive resin composition for a flexographic printing plate, allowing accurate reproduction of a microcell pattern on the surface of a flexographic printing plate even in the absence of an oxygen barrier layer and without special apparatus or additional steps, while exhibiting excellent reproducibility of isolated dots, and a flexographic printing plate produced using the same.SOLUTION: A photosensitive resin composition for flexographic printing plates comprises (A) a conjugated diene polymer, (B) a photopolymerizable unsaturated compound, (C) a photopolymerization initiator, and (D) an oxygen inhibition suppressant.SELECTED DRAWING: None
Owner:TOYOBO MC CORP

A liquid crystal elastomer based on orthogonal click chemistry, its preparation method and a liquid crystal driving element

The present invention discloses a liquid crystal elastomer, a preparation method thereof and a liquid crystal driving element. The liquid crystal elastomer is obtained by carrying out a polymerization reaction on a liquid crystal monomer, a chain extender and a crosslinking agent. The liquid crystal monomer is selected from bis-terminal vinyl liquid crystal monomers and bis-terminal epoxy liquid crystal monomers. The chain extender is selected from dimercapto monomers. The crosslinking agent is selected from one or more of trithiol monomers and tetrathiol monomers. The liquid crystal elastomer of the present invention is based on orthogonal click chemistry, and the polymerization process is divided into two steps. The first step is to generate a lightly crosslinked network through base-catalyzed thiol-epoxy click chemistry. After mechanically stretching the sample of the first step, the second step of crosslinking is carried out through free-radical-initiated thiol-ene click chemistry to obtain a single-domain liquid crystal elastomer. The present invention realizes the fixation of the crosslinked network through thiol-ene click chemistry, and can effectively solve problems such as oxygen inhibition of polymerization and large volume shrinkage rate. Moreover, the single-domain liquid crystal elastomer of the present invention has excellent stability.
Owner:UNIV OF SCI & TECH BEIJING

An aqueous UV coating spray cure system

PendingCN122424980ANitrogen gasLED lamp
The application discloses a water-based UV coating spraying and curing system, and relates to the technical field of coating spraying and curing.The system comprises a hardware execution module, an inert gas protection and recovery module, a sensing and detecting module, a PLC intelligent control module, a communication module and a composite UVLED curing module; high-purity nitrogen is used to build a micro-positive-pressure oxygen-free curing atmosphere, so that oxygen inhibition, yellowing and pinhole defects are eliminated; a one-way heat conduction structure is arranged in the curing module, one-way heat pipes, one-way heat conduction sheets or gradient heat conduction layers are matched with phase change heat storage layers and graphene heat conduction nets, LED lamp beads are instantaneously and unidirectionally led out, a heat insulation buffer layer is matched to block heat backflow, and heat disturbance of the inert gas flow field is avoided.The curing environment is stable, heat dissipation is efficient, and coating consistency is good, so that the application is suitable for high-end coating scenes such as furniture, 3C electronics and automobile parts, and problems such as oxygen inhibition, heat disturbance and uneven curing of traditional equipment are solved.
Owner:SUQIAN YUYOU TECHNOLOGY CO LTD