29 results about "Trimethylolpropane triacrylate" patented technology

This invention relates to the field of packaging film technology and provides a low-temperature polyolefin packaging film and its preparation method. The packaging film comprises a three-layer co-extruded structure consisting of an outer layer, a middle layer, and an inner layer. The components of each layer are as follows: Inner layer: metallocene polyolefin, high-performance polypropylene, modified lignin nanofibers, and erucamide / silica composite microspheres; Middle layer: PCR, modified nano-kaolinite, and trimethylolpropane triacrylate; Outer layer: PCR, modified tourmaline nanotubes, benzoyl peroxide microcapsules, and polydopamine-coated chitosan. This invention uses PCR, which is more energy-efficient and environmentally friendly. The addition of modified lignin nanofibers to the inner layer improves tensile strength; the addition of modified nano-kaolinite to the middle layer improves thermal shrinkage; the addition of modified tourmaline nanotubes to the outer layer lowers the crosslinking reaction initiation temperature and improves shrinkage; and the addition of polydopamine-coated chitosan allows for reversible recombination upon damage, improving puncture strength.

The present application belongs to the technical field of cable material, and particularly relates to a resin composition, a cable insulation material, a cable and a preparation method. The resin composition comprises polyethylene, a crosslinking agent and a crosslinking aid. The crosslinking agent is selected from one or more of triallyl isocyanurate, trimethylolpropane trimethacrylate and trimethylolpropane triacrylate. The crosslinking aid is selected from one or more of triphenyl phosphite, dipropylene glycol diacrylate and tetraethylene glycol diacrylate. The cable insulation material made of the resin composition has a high irradiation crosslinking rate, which can significantly improve the irradiation processing speed of the subsequent cable and improve the cable output efficiency. In addition, the cable insulation material has good aging resistance, can meet the long service life requirement, saves the cable update cost and has good economic benefits.

This invention belongs to the field of packaging and printing materials, specifically relating to a high-temperature resistant water-based micro-crosslinked transfer coating. The raw materials for this high-temperature resistant water-based micro-crosslinked transfer coating consist of the following components: methacrylic acid, N-hydroxymethylacrylamide, butyl acrylate, methyl methacrylate, diallyl phthalate, 1,6-hexanediol diacrylate, tricyclodecanedimethylol diacrylate, trimethylolpropane triacrylate, di(trimethylolpropane)tetraacrylate, potassium persulfate, sodium bicarbonate, alkylphenol polyoxyethylene ether ammonium sulfate, nonylphenol polyoxyethylene ether, deionized water, ethanol, ammonia, wetting agent, defoamer, and film-forming agent. Its beneficial effects include a stable reaction process during the preparation of this high-temperature resistant water-based micro-crosslinked transfer coating, reducing the likelihood of slag formation or explosive polymerization; high gloss in the coating film; good adhesion to vacuum metallization; minimal fogging or whitening; high-temperature molding resistance up to 180℃; and easy peeling of PET film with a high yield.

This invention relates to a laser-engravable high-gloss black coating for automotive taillights and its preparation method, belonging to the field of coating preparation technology. The formulation of the laser-engravable high-gloss black coating is as follows (by weight): 40-60 parts polyurethane acrylate, 3-5 parts modified nano-bismuth oxide, 3-5 parts trimethylolpropane triacrylate, 1-3 parts 4-methylbenzophenone, 1-2 parts carbon black, and 0.5-1.5 parts leveling agent. The modified nano-bismuth oxide is prepared by treatment with ammonium molybdate solution and grafting with a silane coupling agent. Its layered structure synergistically enhances UV absorption efficiency and weather resistance with the molybdate layer. 4-methylbenzophenone and modified nano-bismuth oxide form a light absorption composite system, which, combined with the high cross-linking density network constructed by trimethylolpropane triacrylate, achieves narrow linewidth laser engraving precision. This invention solves the technical problems of low laser engraving precision, poor adhesion, and insufficient solvent resistance in traditional high-gloss black coatings, and is particularly suitable for precision marking applications such as automotive taillights.

This invention relates to the field of liquid bag film preparation technology, and in particular to a lightweight polyethylene liquid bag film and its preparation method. The lightweight polyethylene liquid bag film comprises the following raw materials: polyolefin matrix resin, 3-(4-vinylphenoxy)-1-propylene, (3-buten-1-yl) acrylate, calcium lignosulfonate, carboxylated butadiene-acrylonitrile latex, trimethylolpropane triacrylate, initiator, crosslinking agent, accelerator, antioxidant, and slip agent. In the preparation process, 3-(4-vinylphenoxy)-1-propylene and (3-buten-1-yl) acrylate form a long-chain branched structure in the system, improving the tensile strength of the finished product. Simultaneously, trimethylolpropane triacrylate is added to increase the entanglement between molecular chains, and calcium lignosulfonate and carboxylated butadiene-acrylonitrile latex are added to dissipate impact energy and inhibit crack propagation. Therefore, the resulting polyethylene liquid bag film also exhibits significant impact resistance.

This invention belongs to the field of UV coating technology, and particularly relates to a UV coating that requires no base coat and its preparation method. The raw materials for preparing the coating include the following components by weight: 20–35 parts acrylated epoxy resin, 15–25 parts polyurethane acrylate oligomer, 10–20 parts trimethylolpropane triacrylate, 2–6 parts fluorinated acrylate monomer, 3–8 parts photoinitiator, 0.5–2 parts polyether-modified siloxane leveling agent, 4–12 parts nanocomposite matte filler, 1–5 parts adhesion promoter, and 20–44.5 parts reactive diluent; pre-dispersed by stirring at a speed of 0 min for 20–40 minutes to obtain a premixed slurry; this invention achieves grade 0 adhesion for PET film through the synergistic effect of fluorinated monomer and adhesion promoter, solving the problem of easy peeling of flexible substrates; the fluorinated acrylate monomer achieves a surface tension ≤22 mN / m, realizing excellent hydrophobic and oleophobic properties; the nanocomposite matte filler stabilizes the gloss at 10–30 GU, meeting the requirements of high-end printing; the chemical energy density is 150–300 mJ / cm² (corresponding to 365–405). (nm light source), suitable for high-speed printing equipment.

This invention relates to an aqueous one-component thermosetting self-adhesive coating for thin-gauge silicon steel sheets and its preparation method. The aqueous one-component thermosetting self-adhesive coating for thin-gauge silicon steel sheets comprises the following components: modified epoxy resin, modified silica, additives, and deionized water. The modified epoxy resin is obtained by first blending polytetrahydrofuran glycol, sorbitol, and isophorone diisocyanate, and then reacting them with the epoxy resin. The modified silica is obtained by blending silica containing double bonds, isocyanate-modified acrylate monomers containing epoxy groups, and trimethylolpropane triacrylate. The modified epoxy resin of this invention introduces polyurethane and a network structure, which can improve insulation performance, compatibility, and heat resistance. The modified silica of this invention introduces urethane groups, epoxy groups, a network structure, and benzene rings, which can improve compatibility, adhesion, and heat resistance.

This invention discloses a method for preparing a novel (O1+W) / O2 emulsion using a compound of two surfactants in the field of chemical technology. The emulsion system comprises a fluorocarbon oil phase, an aqueous phase, and a hydrocarbon oil phase. By compounding two types of surfactants with different hydrophilic and hydrophobic properties, using an aqueous solution of fluorocarbon oil and FS-30 as the inner phase, and a Span series surfactant dissolved in ethoxylated trimethylolpropane triacrylate as the outer phase, the two are mixed and shaken to spontaneously form a novel (O1+W) / O2 emulsion with ETPTA as the continuous phase (O2) and containing fluorocarbon oil (O1) and water (W) internally. The emulsion droplets consist of two microregions with significantly different hydrophilic and hydrophobic properties. The preparation process is simple, inexpensive, and easy to apply industrially, providing a new technical pathway for the application of amphiphilic Janus materials in interface science, drug delivery, catalysis, and functional materials.

The application discloses a high-viscosity foaming material, a preparation method and application, and the preparation method comprises the following steps: S1, polypropylene, trimethylolpropane triacrylate, maleic anhydride, styrene and a peroxide initiator are reacted and extruded to obtain first modified polypropylene; S2, the first modified polypropylene is subjected to a melt amidation reaction with octadecylamine to obtain second modified polypropylene; and S3, the second modified polypropylene is plasticized and melted, mixed with a physical foaming agent, and then foamed and shaped to obtain the high-viscosity foaming material. The low-branching-degree long-chain branches, the aromatic ring side groups, the C18 long-chain alkyl groups and the amide groups are introduced into the polypropylene main chain, the aromatic ring side groups are used to induce the ordered arrangement of the C18 long-chain alkyl groups in the cooling process, the physical crosslinking nodes are formed, the long-chain branch entanglement skeleton and the amide hydrogen bond anchoring nodes are cooperated, the intelligent rheological regulation of low viscosity in a processing section and high viscosity in a foaming section is realized, and therefore the melt strength is effectively improved, and the stability of a cell structure in a foaming process is improved.

The application relates to the technical field of PETG sheet materials, in particular to a composite sheet based on electron beam curing and a preparation method thereof, wherein the composite sheet based on electron beam curing comprises a PETG substrate and a coating layer attached to the substrate; the coating layer comprises the following raw materials in parts by weight: 50-70 parts of polyurethane acrylate, 1-3 parts of a bifunctional fluorine-containing acrylate monomer, 15-25 parts of a bifunctional active diluent, 3-6 parts of trimethylolpropane triacrylate, 10-15 parts of modified silicon carbide, 1-2 parts of a dispersing agent and 1-2 parts of a leveling agent; and the composite sheet prepared by the application has the four-resistance properties of wear resistance, weather resistance, scratch resistance and corrosion resistance.

This invention provides a flame-retardant composite material synergistically reinforced with aluminum hydroxide functional filler and its preparation method. Modified aluminum hydroxide is added, which is an intermediate product of freshly prepared aluminum hydroxide coupled with KH570, and a composite formed by free radical polymerization of acrylate and trimethylolpropane triacrylate. By adding modified aluminum hydroxide to the composite material, on the one hand, the modified aluminum hydroxide exhibits good compatibility with the resin matrix, effectively improving the filler dispersion and reducing interfacial defects. Combined with glass fiber and inorganic fillers, it achieves synergistic reinforcement, significantly improving the material's mechanical properties. On the other hand, the modified aluminum hydroxide also possesses a three-dimensional network structure, enabling it to fully impregnate, coat, and interpenetrate with the resin matrix and other components, forming a tightly bonded, uniformly integrated composite system. This strengthens the bonding strength between phases, further enhancing the material's flame-retardant and mechanical properties.

This application relates to an antifouling PTFE hollow fiber membrane for municipal wastewater aeration and its preparation method, comprising: mixing PTFE resin powder, lubricant, and modified NaY zeolite, and allowing it to stand for aging to obtain PTFE material; pressing and extruding the PTFE material to obtain nascent PTFE hollow fibers; degreasing the nascent PTFE hollow fibers to obtain de-oiled PTFE hollow fibers; stretching the de-oiled PTFE hollow fibers to obtain PTFE stretched pipes; sintering and heat-setting the PTFE stretched pipes to obtain shaped PTFE hollow fiber membranes; subjecting the shaped PTFE hollow fiber membranes to plasma surface treatment to obtain surface-treated PTFE hollow fiber membranes; immersing the surface-treated PTFE hollow fiber membranes in a mixed solution of acrylic acid, trimethylolpropane triacrylate, and benzoyl peroxide, reacting to obtain treated PTFE hollow fiber membranes; and then washing and drying to obtain the finished product. This application can improve the mechanical strength and antifouling performance of the finished product.

The application provides a high-melt-strength impact polypropylene material and a preparation method thereof, and belongs to the technical field of polymer materials. The high-melt-strength impact polypropylene material is composed of the following chemical components: 50-70 parts of homopolymer polypropylene, 15-30 parts of copolymer polypropylene, 4-10 parts of random polypropylene, 4-10 parts of amorphous alpha-olefin copolymer, 0.3-1 part of nucleating agent, 1-5 parts of cashew phenol grafted polypropylene compatibilizer, 0.02-0.06 part of peroxide initiator, 0.5-1.5 parts of trimethylolpropane triacrylate, 0.3-0.8 parts of styrene, 0.2-1.0 parts of maleic acid diallyl ester, 0.2-0.8 parts of antioxidant and 0.2-0.5 parts of lubricant. The application realizes the ternary balance of high melt strength, high impact resistance and acceptable heat resistance of the polypropylene material through the synergistic effect of reaction chemistry, crystallization physics and interface engineering.

This invention discloses a UV-curable raw lacquer hybrid prepolymer coating and its preparation method, comprising: rosin acid, hydroxyethyl acrylate, p-toluenesulfonic acid, polymerization inhibitor, 4-acryloyloxybenzophenone, polyethylene glycol methyl ether acrylate, azobisisobutyronitrile, refined raw lacquer, trimethylolpropane triacrylate, leveling agent, and defoamer. The coating uses rosin acid as a rigid framework, forming a macromolecular photoinitiator by side-linking benzophenone photoinitiator groups and flexible polyether segments. Then, through a controllable UV pre-irradiation process, it undergoes free radical grafting with lacquer urushiol to construct a "rigid-tough tunable" hybrid network. This invention solves the problems of slow curing of raw lacquer, easy migration of small-molecule photoinitiators, and high coating brittleness in existing technologies. The coating uses a macromolecular photoinitiator design, with the initiating groups fixed to the rosin framework through chemical bonds, fundamentally solving the migration problem. Furthermore, the "pre-grafting" process improves compatibility, endowing the coating with excellent comprehensive properties.

This invention discloses a highly elastic and wear-resistant floor mat and its preparation method, relating to the field of sports floor mat technology. The elastic and wear-resistant floor mat comprises a four-layer functional structure, from bottom to top: a high-resilience foam layer (1), a dimensionally stable layer (2), an intermediate transition foam layer (3), and a surface wear-resistant layer (4). The surface wear-resistant layer is composed of the following raw materials in parts by weight: 52-62 parts modified polyether-type thermoplastic polyurethane elastomer, 1-1.5 parts UV stabilizer UV-531, 3.5-5.5 parts modified nano-silica, 9-13 parts thermoplastic polyester elastomer, 0.4-0.6 parts antioxidant 1010, 0.6-0.9 parts zinc stearate, 2-3 parts maleic anhydride-grafted polyolefin elastomer, 0.5-0.7 parts trimethylolpropane triacrylate, and 0.6-1.2 parts perfluorooctanoate ethyl ester. The high-resilience foam layer of this mat accounts for 55%-70% of its thickness, providing ample cushioning. The surface wear-resistant layer is modified for weather resistance, abrasion resistance, and easy cleaning. It is manufactured through continuous extrusion without glue, making it environmentally friendly and suitable for the needs of peakball sports.

The present invention provides an ultraviolet-curable ink composition for inkjet printing, which comprises a polymerization component and a photopolymerization initiator, the polymerization component comprising (A) a multifunctional amine-modified oligomer, (B) a nitrogen-containing monomer, (C) an aromatic ring-containing monomer, and (D) a multifunctional monomer, (A) comprising an acrylated amine compound having 2 photopolymerizable functional groups and 2 amino groups within the molecule, (B) comprising at least any one of acryloylmorpholine or vinylcaprolactam, (C) comprising benzyl acrylate and phenoxyethyl acrylate, (D) comprising at least any one of dipropylene glycol diacrylate, 1,6-hexanediol diacrylate, or ethoxylated trimethylolpropane triacrylate, the content of (A) being 0.8-11.0 mass%, the content of (C) being 32.0-75.0 mass%, and the content of (D) being 1.5-14.0 mass%.

This invention discloses a method for preparing a thermal insulation coating for curtain wall glass, specifically relating to the field of building materials technology. The thermal insulation coating is prepared from a fluorocarbon-fluorosilicone copolymer resin solution, modified composite filler, silica-modified microspheres, fluorocarbon particle dispersion slurry, 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, photoinitiator, 1-hydroxycyclohexylphenyl ketone, leveling agent, defoamer, and stabilizer. This invention achieves a synergistic effect of solar spectrum reflection blocking and phase transition temperature-triggered active infrared radiation heat dissipation by constructing a ternary composite system of reflective glass microspheres with titanium dioxide core-shell filler, barrier-type modified tin oxide antimony nanoparticles, and radiation-cooling tungsten-doped vanadium dioxide microparticles, thereby improving weather resistance.

The present invention provides a thermochromic ink suitable for various printing methods, a preparation method thereof, and a printed product thereof. The ink comprises the following raw materials, in percentage by mass: 15 wt % to 45 wt % of aromatic polyurethane acrylic resin, 5 wt % to 45 wt % of modified epoxy acrylic resin, 5 wt % to 10 wt % of ethoxylated trimethylolpropane triacrylate, 5 wt % to 10 wt % of 1,6-hexanediol diacrylate, 5 wt % to 10 wt % of tetrahydrofuran acrylate, 5 wt % to 10 wt % of acryloylmorpholine, 5 wt % to 10 wt % of a co-initiator, 0.5 wt % to 1.5 wt % of polyethylene wax, 4 wt % to 10 wt % of a photosensitizer, 0.5 wt % to 1.5 wt % of a thermal stabilizer and 5 wt % to 15 wt % of calcium carbonate. By introducing resins prone to yellowing under high-temperature environments into the ink formulation and in combination with an excess of active photosensitizers, the coating of the ink according to the present invention can exhibit an excellent irreversible color-changing effect within specific high temperature ranges.

This invention belongs to the field of additive manufacturing of metal materials, specifically relating to a photocurable metal component and its preparation method. The method for preparing the photocurable metal component includes the following steps: (1) photocuring and 3D printing a stainless steel slurry to obtain a metal blank; (2) thermally degreasing the metal blank to obtain a thermally degreased metal blank; (3) vacuum sintering the thermally degreased metal blank to obtain the photocurable metal component. In step (1), the stainless steel slurry comprises a stainless steel alloy, a photosensitive resin, a photoinitiator, and a dispersant; the photosensitive resin comprises 3-hydroxy-2,2-dimethylpropyl-3-hydroxy-2,2-dimethylpropyl diacrylate, 2-hydroxyethyl methacrylate phosphate, and trimethylolpropane triacrylate. This invention combines photocurable molding technology with powder metallurgy technology, which can maintain the mechanical properties and density of the material, and also maintain high surface precision when forming complex parts.

The application relates to a PVC cable material resin and a preparation method thereof, and belongs to the technical field of PVC cable material resin compositions. In the prior art, a large amount of antioxidants needs to be added to improve the aging resistance of the PVC cable material resin, and on the other hand, more other additives need to be added to consider other performances of the PVC cable material resin, which influences other performances of the PVC cable material. The raw materials of the application include vinyl chloride monomers, water, a dispersing agent, an initiator and a terminator, and the application is characterized in that the raw materials further include 2-(2-hydroxy-3-tert-butyl-5-methylbenzyl)-4-methyl-6-tert-butyl phenyl acrylate and trimethylolpropane triacrylate. The PVC resin produced by using the trimethylolpropane triacrylate, 2-(2-hydroxy-3-tert-butyl-5-methylbenzyl)-4-methyl-6-tert-butyl phenyl acrylate and vinyl chloride monomers for copolymerization has excellent wear resistance and aging resistance.

The application discloses a high-solid low-surface-energy template paint for an aluminum alloy template, a preparation method of the template paint and an aluminum alloy template with a coating on a surface, and belongs to the technical field of template paints. The template paint mainly comprises the following components in percentage by mass: a hydrogen donor 40-60%, a hydrogen acceptor 20-40%, a latent catalyst 0.5-2%, modified silicon oil 0.5-5%, a solvent 10-15%, wherein the hydrogen donor is prepared by ring-opening reaction of liquid epoxy resin with amino alcohol and then ester exchange reaction with acetoacetic acid ester; and the hydrogen acceptor is composed of one or more of 1,6-hexanediol diacrylate, trimethylolpropane triacrylate and pentaerythritol triacrylate and diphenylmethane bismaleimide. The coating formed on the surface of the aluminum alloy template by the high-solid low-surface-energy template paint for the aluminum alloy template has the characteristics of excellent adhesion, good concrete demolding property, high impact resistance and excellent alkali resistance, and can be demolded for multiple times.

This invention relates to the field of gel materials technology and discloses a high-toughness, 3D-printable, dual-network cross-linked conductive hydrogel and its preparation method. The hydrogel is composed of the following components: N-hydroxymethylacrylamide, sodium alginate, modified carbon nanotube-polypyrrole composite conductive filler, terephthalaldehyde, calcium chloride, photoinitiator, deionized water, trimethylolpropane triacrylate, and antioxidant. This invention achieves a balance between high toughness, high conductivity, and 3D printing compatibility through component formulation and process optimization. By employing gradient heating post-treatment and vacuum drying processes to control the hydrogel's water content and network density, mechanical properties and conductive stability are further optimized. The 3D printing parameters are highly matched with the cross-linking system, enabling the fabrication of complex structural devices under ambient temperature and mild conditions, with high molding precision and strong interlayer bonding. It is widely applicable to flexible sensing, wearable electronics, biomedical devices, and other scenarios, possessing significant application value.

This invention relates to the field of functional film preparation technology, specifically to a method for preparing a wear-resistant, stain-resistant, transparent, and slip-resistant film, comprising a wear-resistant and hardening primer, a slip-resistant and transparent intermediate layer, and a wear-resistant and stain-resistant topcoat. The wear-resistant and hardening primer comprises hydroxyethyl acrylate modified amino resin, polyurethane oligomer, trimethylolpropane triacrylate, 1,6-hexanediol diacrylate, a mixed solvent, KH560 silane coupling agent, nano-alumina, polytetrafluoroethylene micropowder, photoinitiator 1173, silicone leveling agent, and isocyanate curing agent. The mixed solvent is composed of ethyl acetate and ethanol. This invention employs a three-layer synergistic coating system, significantly improving the bonding stability between the coating and the substrate, as well as between the coating layers, through functional differentiation design and interface optimization of the primer, intermediate layer, and topcoat.

The application discloses a kind of preparation methods of high wear-resistant waterproof optical cable material, steps include: (1) preparation doped cerium silicon oxide, obtain doped matrix powder;(2) doped matrix powder modification treatment, obtain modified powder;(3) ethoxylated trimethylolpropane triacrylate and dodecylamine are added in anhydrous ethanol, stirring in nitrogen atmosphere, water bath heating;Add modified powder and methyl acrylate, continue water bath incubation stirring, solid-liquid separation, washing, drying, obtain doped particles;(4) ethylene-vinyl acetate copolymer, metallocene polyethylene, the doped particles, 1,4-bis tert-butyl peroxide isopropyl benzene, maleic anhydride grafted polyethylene, ethylene-octene copolymer are mixed, and mixing is carried out in internal mixer after mixing, extrusion is formed wear-resistant layer in the outermost layer of optical cable after mixing, and the high wear-resistant waterproof optical cable is obtained.The high wear-resistant waterproof optical cable material prepared by the method has good tensile strength and water resistance.

This invention discloses a matte heat-sealable film and its preparation method, relating to the field of heat-sealable film preparation. The matte heat-sealable film includes a heat-sealable layer, which is made of a composition comprising the following components in parts by weight: 60 parts of random copolymer polypropylene, 15 parts of low-density polyethylene, 8 parts of heat-shrinkable microsphere precursor, 5 parts of tackifying resin, 0.3 parts of slip agent, and 0.4 parts of antioxidant. The heat-shrinkable microsphere precursor is a core-shell structured microsphere, with the core layer copolymerized from isoborneol methacrylate and trimethylolpropane triacrylate, and the shell layer being a long-chain alkylsiloxane graft layer. Its average particle size is 8 μm, and its volume shrinkage rate at 130°C is 8%. This invention, by introducing the heat-shrinkable microsphere precursor to form an in-situ micro-wrinkled structure within the heat-sealable layer, can impart a matte appearance to the film without using inorganic matting agents.

The application relates to a stain-resistant decorative paper and a preparation method thereof. The stain-resistant decorative paper comprises impregnated paper and a stain-resistant coating layer coated on the outer surface of the impregnated paper, wherein the stain-resistant coating layer is formed by curing a stain-resistant coating material on the impregnated paper; the stain-resistant coating material comprises the following raw materials in parts by weight: modified acrylic resin 40-50 parts, bisphenol A epoxy acrylate 15-20 parts, ethoxylated trimethylolpropane triacrylate 10-15 parts, nano-silicon dioxide 5-9 parts, nano-zinc oxide 4-8 parts, polyoxyethylene ether 3-5 parts, film-forming aid 2-4 parts, photoinitiator 2-4 parts, ethyl acetate 5-10 parts, and water 20-30 parts. The stain-resistant decorative paper has good stain resistance, wear resistance and scratch resistance, and has a long service life; the preparation method is simple in process, convenient to operate, high in production efficiency, and beneficial to industrial production.

The application relates to the technical field of photoresist materials, in particular to a super-thick dry film photoresist for copper column electroplating and a preparation method thereof. The super-thick dry film photoresist comprises the following components: modified polyurethane acrylate 38-48 parts, a first active diluent 12-18 parts, a second active diluent 5-10 parts, a plasticizer 5-10 parts, a photoinitiator 3-8 parts, a leveling agent 0.5-1.5 parts, and a defoaming agent 0.1-0.3 parts; the first active diluent is composite modified dipentaerythritol hexaacrylate, and the second active diluent is trimethylolpropane triacrylate; the photoresist can form a super-thick and defect-free film layer, and the adhesion, electroplating solution corrosion resistance and pattern resolution of the film layer are improved, thereby meeting the stringent requirements of the copper column electroplating process.

The application relates to the technical field of catalysts, in particular to a precious metal catalyst based on additive manufacturing and a preparation method thereof. The preparation method of the precious metal catalyst based on additive manufacturing comprises the following steps: 1) uniformly mixing chloroplatinic acid hexahydrate, oleylamine and an organic solvent, stirring at 40-50 DEG C for 1-3 hours, then removing the organic solvent to obtain a compound; 2) uniformly mixing the compound prepared in the step 1) with 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, a photoinitiator and a pore former, then adding alumina powder and a dispersant, ball milling, defoaming and preparing a slurry; 3) performing 3D printing on the slurry prepared in the step 2), and cleaning to obtain a green body; 4) first heat treating the green body obtained in the step 3) at 280-330 DEG C for 3-5 hours, then heat treating at 350-450 DEG C for 1-2 hours, then heat treating at 850-950 DEG C in a hydrogen-containing atmosphere for 2-4 hours, and cooling, thereby obtaining the catalyst. The catalyst prepared in the application can greatly reduce the peeling and loss of precious metals.