59results about How to "Avoid oxygen inhibition" patented technology

The invention discloses a rapid curing coating applicable to a UV-LED (Ultraviolet-Light-Emitting Diode) light source. The coating comprises the following components in percentage by weight: 4-10 percent of a photoinitiator, 20-60 percent of a special oligopolymer, 10-50 percent of an active diluent, 6-12 percent of a promoter, 0.1-2 percent of an aid and 0-30 percent of a pigment. The rapid curing coating applicable to the UV-LED light source can be prepared by slowly stirring and mixing the components uniformly in sequence under the condition that sunlight or ultraviolet light irradiation is avoided and the relative air humidity is less than 70 percent, and keeping the temperature of a mixture below 50 DEG C in a stirring process. The rapid curing coating can be cured rapidly under low UV light intensity and energy, and has the characteristics of high luster, high adhesion and high wear resistance; the production efficiency of UV-LED photo-curing is increased to a great degree; and a highly-environmentally-friendly and highly-energy-saving UV-LED photo-curing technology is applied widely.

The invention discloses a flexible micro-nanofiber stranded wire with electromagnetic performance and a preparation method of the flexible micro-nanofiber stranded wire. Micro-nanofiber which is used for forming the flexible micro-nanofiber stranded wire in a twining way contains a photo-curing polymer material, a conductive material and magnetic nano particles; the micro-nanofiber is prepared from a fiber spinning precursor solution during solvent-free electrospinning; an electrospinning process is carried out under a mionectic ultraviolet irradiation environment; the spinning precursor solution contains liquid prepolymer of a photo-curing material, a photoinitiator, the conductive material and the magnetic nano particles and does not contain an organic solvent. The flexible micro-nanofiber stranded wire disclosed by the invention has excellent mechanical property and good electromagnetic performance; meanwhile, during the electrospinning preparation process, the organic solvent needs not to be added, the preparation process is safer and more environmental-friendly, and the flexible micro-nanofiber stranded wire is suitable for large-scale production.

The invention relates to the technical field of coatings and particularly relates to an elastic-feeling coating. Ultraviolet (UV) light-cured elastic-feeling paper gloss oil is composed of the following components in parts by weight: 18-22 parts of UV elastic resin, 22-28 parts of monomer, 8-12 parts of active amine, 3-7 parts of photoinitiator, 5-10 parts of elastic powder, 3-7 parts of gas phase silica matting powder, 0.5-2 parts of assistant and 22-26 parts of solvent, wherein the monomer is a mixture of isobornyl acrylate and 1,6-hexanediol diacrylate. The ultraviolet light-cured elastic-feeling paper gloss oil provided by the invention is suitable for high-speed roller coating, thereby improving the working efficiency, reducing the coating operation difficulty and avoiding personal injury.

The invention aims to provide a PVC (polyvinyl chloride) coating cured by using a UV (ultraviolet)-LED (light-emitting diode) light source and a preparation method of the PVC coating. The coating is prepared from the following raw materials by weight percent: 40-50% of polyurethane acrylate, 5-15% of modified acrylate oligomer, 5-10% of hyperbranched acrylate oligomer, 30-40% of acrylate reactive diluent, 3-7% of photoinitiator, 0.2-0.4% of auxiliary and 0-20% of color filler. The PVC coating has the advantages that the coating can be fast cured under the UV-LED light source, and has good adhesive force on PVC. The problems of slow curing speed and poor surface dryness of a photocured PVC coating under the UV-LED light source are completely solved.

The invention discloses a conductive micro-nanometer fiber stranded wire based on solvent-free electrospinning and a preparing method thereof. The conductive micro-nanometer fiber stranded wire comprises a photocuring material template stranded wire and a conductive macromolecule layer. The photocuring material template stranded wire is formed by winding micro-nanometer fiber cured by solvent-free electrospinning ultraviolet light. The conductive macromolecule layer is manufactured through an in-situ polymerization method and comprises conductive macromolecule layer bodies permeating into the template stranded wire and wrapping the template stranded wire. According to the conductive micro-nanometer fiber stranded wire, conductivity of the fiber stranded wire is further improved while excellent stretchability is kept, organic solvent does not need to be added in the electrostatic spun yarn preparing process, the preparing process is safer and more environmentally friendly, and the stranded wire is suitable for large-scale production.

The invention discloses a mono-component polysiloxane photoinitiator capable of overcoming oxygen polymerization inhibition. The mono-component polysiloxane photoinitiator has a specific structure represented by a formula shown in the description, wherein R is a photoinitiator. According to the initiator, a photoinitiator is introduced to a hydrogen-containing polyoxosilane lateral chain, a certain quantity of silicon-hydrogen bonds are reserved, and the action of overcoming oxygen polymerization inhibition is achieved by using the silicon-hydrogen bonds as a hydrogen donor. Simultaneously, the invention discloses a preparation method for the mono-component polysiloxane photoinitiator capable of overcoming oxygen polymerization inhibition. The method comprises the steps of mixing a terminal alkene containing photoinitiator with hydrogen-contained polysiloxane in an argon gas atmosphere, then, dissolving the mixture in a solvent, adding a proper amount of silicon hydrogenation catalyst,carrying out a reaction at a certain temperature, carrying out depressurizing to remove the solvent after the reaction is completed, thereby obtaining the mono-component polysiloxane photoinitiator.The photoinitiator has good compatibility with a light-curing system, a co-initiator is not required to be added additionally during light-curing, the efficiency of initiation is high, polymerizationcan be completed under aerobic conditions, and thus, the photoinitiator is environmentally friendly and energy-saving, meets the requirements of green chemistry and has a broad application prospect inthe field of light-curing.

A process for creating an image in a dry-film resist laminate. The dry-film resist laminate comprises in order, a peelable top layer, a layer of dry-film resist, a clear or translucent coating layer, and a peelable bottom layer. The top layer is peeled from the laminate and the laminate is applied to a surface using heat and pressure. Thereafter, an image is created in the layer of dry-film resist and the resist is developed to remove uncured portions of the layer of photoresist along with the clear or translucent coating layer.

The invention relates to a photo-cured epoxy-modified organic silicon coating composition and a preparation method thereof. The photo-cured epoxy-modified organic silicon coating composition based on100 weight parts mainly comprises a component A of 30-98 parts of one or more than one epoxy-modified organic silicon oligomer, a component B of 0.5-40 parts of one or more than one epoxy active diluent, a component C of 0.5-10 parts of one or more than one photo-curing initiator and a component D of 0.5-10.0 parts of fumed silica to adjust the viscosity and thixotropy of the composition. The photo-cured epoxy-modified organic silicon coating composition provided by the invention is especially suitable for organic silicon material surface coatings in the electronic industry and is compatible to an organic silicon pressure-sensitive adhesive material; and meanwhile, a formula designing main body is of an organic silicon structure; and the coating possesses excellent heat resisting property.

The invention belongs to the field of coatings, and concretely relates to an ultraviolet-curing gradient color electroplating intermediate paint. The ultraviolet-curing gradient color electroplating intermediate paint comprises, by weight, 6-36 parts of solvent-type polyurethane acrylate, 3-29 parts of thermoplastic acrylate, 0.8-12 parts of a reactive diluent, 0.5-8 parts of a nanometer color paste, 0.2-5.5 parts of an initiator, 0.1-0.6 part of an assistant and 35-90 parts of a diluent. The ultraviolet-curing gradient color electroplating intermediate paint effectively improves the dyeing defect, color spots and metal texture of a metal coating layer and different gradient color effects of the same metal coating surface; a free radical photoinitiator and a cationic photoinitiator are compounded to ensure the curing speed by the free radical photoinitiator and ensure deep curing by the cationic photoinitiator; and thiol acrylate cooperates with polyether polyurethane acrylate, and thesynergistic action of the two components ensures the sufficient curing of a film and reduce the sensitivity of the surface of the film to gases, water steam and outside impurities, so the prepared film has good aging resistance.

The invention relates to a thioxanthone photoinitiator containing sulfydryl and initiator aid amine and a preparation method of the thioxanthone. The preparation method comprises the following steps: by using a thioxanthone derivative containing an epoxy group as a raw material, firstly, converting the epoxy group into a circular thiocarbonate group by adding carbon disulfide which is reacted with the thioxanthone derivative containing the epoxy group; and then, carrying out a ring-opening reaction with amine containing a benzene ring to obtain the thioxanthone photoinitiator containing sulfydryl and initiator aid amine, wherein the obtained compound is of a good photo-initiating effect; R1, R2 and R3 are independently selected from hydrogen, halogen, hydroxyl, and C1-C22 alkyl; R4 is selected from H, C1-C2 alkane groups or benzyl; and R5 is selected from aromatic alkyls such as benzyl, phenethyl, phenylpropyl, and phenylbutyl containing benzene rings.

The invention discloses a UV-curable electrospun colored micro-nanofiber stranded wire and its preparation method. Micro-nanofiber for being twisted into the stranded wire is colored. The micro-nanofiber contains a photo-curing polymer material and color phototherapy gel. The micro-nanofiber is prepared from a solvent-free electrospinning precursor solution. The electrospinning process is carried out in a mionectic UV-irradiation environment. The electrospinning precursor solution contains a liquid prepolymer of a photo-curing material, a photoinitiator and phototherapy gel, and contains no organic solvent. The stranded wire has rich and full colors, has good color fastness, is not easy to fade and has good tensile mechanical property. Meanwhile, there is no need to add an organic solvent during the electrospinning preparation process. The preparation process is safer and more environmentally-friendly. The preparation method is suitable for large-scale production.

The invention discloses free radical-cationic water-based hybrid light-cured resin and a synthesis method thereof, the light-cured resin synthesized by the method solves the problem of pungent smell of current amine neutralizing resin, a product printed by adopting the water-based hybrid light-cured resin can be directly washed with water, and chemicals are prevented from being used; meanwhile, byutilizing the advantages of free radical type resin and cationic type resin, the photocuring speed of the resin is balanced, the volume shrinkage of a 3D printed product is reduced, the occurrence ofoxygen inhibition is effectively relieved, and the surface drying of the 3D printed product or a surface coating is promoted.

The invention belongs to the field of organic functional materials, and particularly relates to a heteropolycyle compound having photo-activity and a preparation method thereof, wherein the structureof the compound is represented as the formula (I). The heteropolycyle compound in the invention has excellent photo-activity, wherein the compound has a large specific surface area due to the heteropolycyle structure, so that oxygen inhibition is effectively overcome. The compound, used for initiating polymerization of a monomer, is high in conversion rate. The preparation method is gentle in reaction conditions, wherein the reactions are carried out under normal pressure, so that the method is simple in operation; the method employs accessible raw materials, is low in cost, is environment-friendly and pollution-free, and is suitable for large-scale industrial production.

The invention relates to the field of optical counterfeiting prevention, and discloses a protective ultraviolet curing coating composition with the solid content being 100%, a coating prepared from the same, and application of the coating. The coating composition comprises, on the basis of taking the total weight of the coating composition as a reference, 58-88 wt% of a component not containing hydroxyl and capable of being subjected to cationic curing, 5-20 wt% of a component containing hydroxyl and capable of being subjected to cationic curing, 2-12 wt% of a component capable of being subjected to free radical curing, 1-6 wt% of a surface modification component capable of being subjected to free radical curing, and 2-10 wt% of a composite initiation system of a cationic initiator and a free radical initiator. The coating composition has the characteristics of low viscosity and high curing speed; and through the formed protective coating, chemical resistance, bending resistance, scratch resistance and stain resistance of an optical anti-counterfeiting product can be obviously improved, and thus the circulation life of the optical anti-counterfeiting product is prolonged.

The invention discloses a photosensitive resin composition and a water washing resin plate. The photosensitive resin composition comprises the following ingredients in parts by mass: 55-75 parts of sulfydryl modified PVA (polyvinyl alcohol) resin, 60-80 parts of solvent, 22-45 parts of active monomer, 2-10 parts of plasticizer, 1-3 parts of photoinitiator, 0.01-0.05 parts of polymerization inhibitor and 0-0.1 parts of other assistant, wherein sulfydryl accounts for 0.5-10wt% of the sulfydryl modified PVA resin; and a degree of saponification of the PVA resin is 60-95mol%. Sulfydryl modified PVA is used as matrix resin in the photosensitive resin composition; sulfydryl and a carbon-carbon double bond of the active monomer are subjected to 'sulfydryl-ethylene' photocuring; oxygen inhibitioncan be effectively overcome; and steps of 'viscosity removal' and 'post exposure' in a platemaking process are simplified.

The invention discloses a large-scale solvent-free electrospinning method for preparing micro-nano fibers of light-curing materials, which comprises the following steps: (1) configuring a spinning precursor solution of light-curing materials; (2) electrospinning micro-nano fibers: (1) The prepared spinning precursor solution is placed in the liquid storage mechanism of the electrospinning device connected to the spinning nozzle, and the spinning nozzle and the collecting pole of the electrospinning device are placed in a hypoxic environment for electrospinning. Spinning, in the process of electrospinning, the ultraviolet light source is used to irradiate the jet ejected from the spinning nozzle, and the light-curing material micro-nano fibers can be collected on the collecting pole of the electrospinning device. The method is simple to operate, effectively avoids the environmental pollution caused by the volatilization of organic solvents, is safe and environmentally friendly, and is suitable for large-scale production of micro-nano fibers of light-curing materials. The fibers are generally short and irregular, the curing is incomplete, and the technical problems that cannot be mass-produced.

The invention discloses a starch modified UV (ultraviolet) adhesive and a preparation method thereof, and the starch modified UV adhesive is prepared from the following raw materials in parts by mass: 2-4 parts of acrylic polyester A with a structure as shown in a formula 1, 2-3 parts of acrylic polyester B with a structure as shown in a formula 2, 3-5 parts of mercaptan, 0.5-0.7 part of a photoinitiator, 0.05-0.1 part of a silane coupling agent, 0.2-0.5 part of fumed silica and 1-4 parts of starch. The UV adhesive is high in curing speed and can be fully stripped without residual adhesive after high-temperature water bath ultrasonic treatment, the stripping process is simple to operate, and the UV adhesive is environment-friendly.

The invention aims to provide a PVC (polyvinyl chloride) coating cured by using a UV (ultraviolet)-LED (light-emitting diode) light source and a preparation method of the PVC coating. The coating is prepared from the following raw materials by weight percent: 40-50% of polyurethane acrylate, 5-15% of modified acrylate oligomer, 5-10% of hyperbranched acrylate oligomer, 30-40% of acrylate reactive diluent, 3-7% of photoinitiator, 0.2-0.4% of auxiliary and 0-20% of color filler. The PVC coating has the advantages that the coating can be fast cured under the UV-LED light source, and has good adhesive force on PVC. The problems of slow curing speed and poor surface dryness of a photocured PVC coating under the UV-LED light source are completely solved.

The invention discloses a water-washable letterpress photosensitive resin composition and its products. Its main feature is that the photosensitive resin is a hydrophilic polyamide resin modified by a mercapto compound, and the mercapto compound includes: alkyl mercaptan, sulfur Alcohol esters, aryl mercaptans, etc., use the mercapto groups and the ethylenic unsaturated bonds of the surrounding active monomers for photocuring during exposure, which can effectively overcome oxygen inhibition and simplify the steps of "debonding" and "post-exposure". On the other hand, the cracking-type and hydrogen-extracting-type compound photoinitiators are used in the resin composition, and the photosensitive wavelength ranges of different photoinitiators are fully utilized to complement each other and improve the utilization efficiency of ultraviolet light. The photosensitive resin composition prepared by the above method is applied in water-washing letterpress, and has good sensitivity, dot reduction ability and image-text flushability.

The present invention discloses a UV-curing-based solvent-free electrostatic spinning apparatus. The apparatus comprises a high voltage power supply, a liquid storage mechanism, a spinning nozzle, an oxygen isolating mechanism, an ultraviolet light source and a collector; the anode of the high voltage power supply is connected with the spinning nozzle; the spinning nozzle is communicated with the liquid storage mechanism for storing spinning precursor solution; the collector is connected with the cathode of the high voltage power supply or directly grounded; the oxygen isolating mechanism comprises a sealing box, the inside of which is anoxic or mionectic; the spinning nozzle and the collector are positioned in the sealing box; the ultraviolet light source is positioned in the sealing box or ultraviolet light emitted by the ultraviolet light source can enters into the sealing box; and the ultraviolet light source can irradiate space between the spinning nozzle and the collector. The apparatus can be used for continuously preparing photo-curing material micro-nano fiber in batches. The apparatus is simple in operation and safe and environment-friendly, environmental pollution caused by organic solvent volatilization can be effectively avoided, and the apparatus is especially suitable for large-scale commercial production of the photo-curing material micro-nano fiber.

The invention belongs to the field of coatings, and specifically relates to a room temperature self-repairing coating and a preparation method thereof. The coating material includes the following raw materials in parts by weight: 60-80 parts of self-repairing polythiourethane resin matrix, 15-25 parts of photocurable resin 10-20 parts of photocurable monomer diluent, 2-5 parts of photoinitiator. The coating material of the present invention effectively improves the defects of existing self-healing coatings such as low self-healing rate, limited number of repairs, and the use of external energy or healing agents, and has the characteristics of anti-fouling, abrasion resistance, and impact resistance. Good overall performance advantages.

The invention relates to the field of optical anti-counterfeiting, and discloses a protective ultraviolet light curing coating composition with 100% solid content and its coating and application, wherein, based on the total weight of the coating composition, the coating composition includes 58 ‑88wt% cationically curable component not containing hydroxyl groups, 5‑20wt% cationically curable component containing hydroxyl groups, 2‑12wt% free radical curable component, 1‑6wt% free radical curable Cured surface modification components, and a compound initiation system of 2-10wt% cationic initiator and free radical initiator; the coating composition has the characteristics of low viscosity and fast curing speed. The formed protective coating can significantly improve the chemical resistance, bending resistance, scratch resistance and stain resistance of optical anti-counterfeiting products, thereby prolonging the circulation life of optical anti-counterfeiting products.

The invention discloses a manufacturing process of a touch film. The touch film comprises a transparent base material, a sensing layer and a writing layer; a UV printing layer is obtained by UV printing material under ultraviolet irradiation, and the UV printing material is obtained by the following steps: mixing aliphatic polyurethane triacrylate, 1, 6-hexanediol diacrylate, ethylene glycol diglycidyl ether, castor oil polyglycidyl ether and alkyl modified organosiloxane into a stirring dispersion machine, and mixing at a stirring speed of 400-600r / min for 10-15min to obtain a material; and feeding the obtained material 2 into the bead mill, and grinding until the particle size is 300-400nm to obtain the UV printing material. According to the manufacturing process of the touch film, the crosslinking rate of all components in the UV printing material is improved, so that the UV printing material can be cured without too much heat energy, and the oxygen inhibition phenomenon of the UV printing material is effectively avoided.

A technology for manufacturing a writable touch film is disclosed. The UV printing material is obtained by the following steps: step 1, putting the aliphatic polyurethane triacrylate, 1, 6 hexanedioldiacrylate, ethylene glycol diglycidyl ether, castor oil polyglycidyl ether and alkyl modified organosiloxane into a stirring and dispersing machine for mixing to obtain the material 1; 2, adding theweight parts of the hydroxymethyl butyl ester, the organic thermoset polymethylurea resin, 4- Acryloylmorpholine, 2-Hydroxyl-2-Methyl-1-Phenyl-1-Acetone, sulfonyloxy ketone and coloring pigment, further mixing to obtain material 2; Step 3, the material 2 obtained in the step 2 is sent to a bead mill for grinding until the particle size is 300-400nm, and UV printing material is obtained. The invention can write the manufacturing process of the touch film, and the prepared UV printing layer has high printing accuracy, high curing hardness and scratch resistance.

The invention discloses a low-energy UV-curable polyurethane acrylate prepolymer, a preparation method thereof, and a UV-curable coating. In parts by weight, the raw materials of the prepolymer include: 100 parts of diol polymer, 35-150 parts of diisocyanate 6-37 parts of carboxyl-containing chain extender, 5-40 parts of acrylate end-capping agent, 3-30 parts of mercaptan end-capping agent, 0.1-0.5 parts of polymerization inhibitor, and 0.1-0.5 parts of organotin catalyst. The prepolymer provided by the invention contains a mercapto group, which can effectively overcome oxygen inhibition, requires less energy for curing, and at the same time, the carboxyl group can inhibit the Michael addition reaction of the mercapto group and acrylate. The prepolymer has the advantages of fast UV curing speed, good toughness and stable storage.

The invention relates to a method for realizing different post-press processing effects on the surface of printed matter by using a variable data ink-jet printing method. The method of the present invention includes the following steps: 1) printing synergistic ink on surface A to form synergistic graphics; 2) drying the synergistic graphics; Pressing to form a complex; 4) UV curing the complex; 5) separating the complex. The method of the present invention is easy to operate, environmentally friendly and safe, and the process is simple. It is also suitable for absorbing or non-absorbing substrates, and can meet the needs of hot stamping on the surface of printed matter, local UV glazing, 3D grating, laser, embossment, shiny particle decoration, etc. Post-press digital enhancement needs.

The invention discloses a coating material for wear-resistant teaching blackboards, and a preparation method of the coating material. The coating material for the wear-resistant teaching blackboards is prepared from the following components: aliphatic polyurethane triacrylate, 1, 6 hexanediol diacrylate, ethylene glycol diglycidyl ether, alkyl modified polysiloxane, 2-methyl methacrylate, hydroxyltoluene butyl ester, organic thermosetting polymethyl urea resin, 4-acryloyl morpholine, sulfonyloxy ketone, 2-hydroxy-2-methyl-1-phenyl-1-acetone and Pigment BK7. The invention provides the coatingmaterial for the wear-resistant teaching blackboards and the preparation method of the coating material; the coating material is rapid in curing speed and strong in adhesion to a base material; secondly, the viscosity between the components of the coating material can be reduced, the inkjet smooth printing is facilitated, a spray nozzle is not easily blocked, and the yield is high; furthermore, the viscosity and surface tension of the coating material containing the Pigment BK7 are reduced, and the stability is good.