17results about How to "Good printability" patented technology

The application discloses a preparation method of an electric field response self-assembly based photo-curing 3D printing ink, comprising the following steps: (1) mixing a photo initiator, a photosensitive resin and water to obtain a photosensitive resin aqueous solution; (2) uniformly mixing a polypeptide or an amino acid derivative with the photosensitive resin aqueous solution to obtain a mixed solution, and preparing the electric field response self-assembly based photo-curing 3D printing ink after self-assembly; the structure of the polypeptide is shown in the following formula (I)-(IV), and the amino acid derivative is shown in the following formula (V); the printing ink prepared by the application can self-assemble to form a certain microstructure (such as a tube, a fiber, a belt, a ball and the like), and under the action of an electric field, a structure with regular arrangement in macro and micro and enhanced mechanical properties can be obtained after 3D printing, so that the structure obtained by curing and forming the ink has excellent mechanical properties, good structural stability, a fidelity effect and good biocompatibility.

The utility model discloses a metal roll plate printing device convenient to adjust, which comprises a rack, a rolling assembly and an adjusting assembly are arranged on the rack, the adjusting assembly comprises electric transverse guide rails arranged on two sides of the rack, each group of electric transverse guide rails is provided with a mounting plate, and the mounting plates are arranged on the rack. A fixing block and an electric longitudinal guide rail are arranged above each set of mounting plates, a printing plate roller is arranged between the two sets of fixing blocks, and a control assembly is arranged on one side of the rack. The winding assembly is arranged so that winding operation and unwinding operation can be conveniently conducted on a metal winding drum plate to be printed, meanwhile, the adjusting assembly is arranged so that the transverse distance and the longitudinal distance between the printing plate roller and the plate pressing roller can be accurately and rapidly adjusted, the device adapts to the metal winding drum plates with different thicknesses and printing requirements, the applicability of the device is improved, and the practicability is high. And through the arrangement of the control assembly, the printing pressure can be accurately adjusted, the printing effect is more ideal, and different printing process requirements are met.

This invention relates to a method for desiliconizing green liquor in papermaking, belonging to the field of papermaking pulping chemical regeneration technology. This method aims to solve the technical problem in existing technologies where direct carbon dioxide is introduced into green liquor for desiliconization, resulting in the formation of colloids from the generated silicic acid, making subsequent solid-liquid separation difficult. The key points of the technical solution are: first, solid-liquid separation of the green liquor is performed to obtain a clear green liquor; then, white mud slurry is added to the clear liquor as seed crystals, and carbon dioxide gas is introduced to carry out a carbonization reaction, generating an easily separable silicon-containing suspension; next, solid-liquid separation is performed on the silicon-containing suspension to obtain a silicon-containing filter cake and a causticizing mother liquor; finally, calcium hydroxide is added to the causticizing mother liquor to carry out a causticizing reaction, obtaining white liquor and recyclable white mud slurry. This method is mainly applied to the desiliconization and purification of green liquor during the alkali recovery process in papermaking, and can utilize carbon dioxide in industrial flue gas to achieve carbon resource utilization; the separated silicon-containing filter cake can be further processed into activated calcium silicate products.

The invention provides silver-based conductive paste for a flexible electronic device, a preparation method and application, and relates to the technical field of new materials. The preparation method comprises the following steps: carrying out surface modification treatment on original nano silver powder by adopting organic acid to obtain modified nano silver powder; preparing an organic silicon rubber carrier which is composed of an organic solvent, a silane coupling agent and an additive; the modified nano silver powder is mixed with an organic silicon rubber carrier, homogenization treatment is carried out, the silver-based conductive paste is obtained, and the silver-based conductive paste has excellent dispersity and stability. According to the preparation method, agglomeration of the nano-silver particles is effectively prevented, the conductivity and applicability of the nano-silver paste are remarkably improved, and the preparation method is suitable for multiple fields such as electronic packaging.

This invention discloses a tungsten-copper electronic paste for medium-temperature co-fired ceramic substrates and its preparation method, belonging to the field of electronic pastes. By mass percentage, the paste consists of 80%–85% tungsten-copper powder, 5%–15% organic carrier, and 5%–10% binder phase. The preparation method includes: first preparing the organic carrier, then uniformly mixing the tungsten-copper powder and binder phase, followed by adding the organic carrier, and then thoroughly grinding and dispersing the mixture using a stirring and three-roll mill to obtain a uniform and stable tungsten-copper electronic paste. This invention, by optimizing the powder size and paste ratio, significantly reduces the sheet resistance of the conductive layer after sintering and improves conductivity while ensuring good co-firing compatibility with medium-temperature co-fired ceramics. The resulting paste exhibits excellent printability and rheological stability, with clear printed lines and a smooth surface. It shows no bubbling or delamination during sintering and is suitable for high-performance, high-reliability electronic packaging and substrate circuit manufacturing.

This invention discloses an aqueous acrylic emulsion comprising the following components in parts by weight: 570-640 parts of a base material, 290-350 parts of a monomer system, 2.5-4.5 parts of an initiator system, and 11-20 parts of a post-additive; wherein the base material is formed by uniformly mixing a high-viscosity acrylic resin liquid, an anionic surfactant, and deionized water in a mass ratio of (420-460):(2-4):(158-168); the monomer system is composed of styrene, butyl acrylate, isooctyl acrylate, hydroxyethyl methacrylate, and L-61 nonionic surfactant in a mass ratio of (38-50):(58-72):(190-210):(2-4):(9-11), after uniform mixing. The aqueous acrylic emulsion of this invention has the advantages of low film-forming temperature and high adhesion, and is mainly used as a binder for gravure printing inks and high-adhesion varnishes on plastic films. This invention also provides a method for preparing the aqueous acrylic emulsion.

The invention provides glass powder, dielectric paste and a thick film heating body. The glass powder is prepared from the following raw materials in percentage by weight: 15 to 40 percent of B2O3, 15 to 40 percent of MgO, 20 to 50 percent of CaO, 7 to 20 percent of SiO2 and 0.1 to 8 percent of glass powder additive, wherein the total weight of the raw materials of the glass powder is 100 percent. Based on the total weight of the dielectric paste being 100%, the dielectric paste comprises 55-80% of the glass powder, 0-5% of cobalt blue, 8-35% of an organic carrier, 3-15% of a diluent, 0.5-3% of an inorganic additive and 0.2-1% of an auxiliary agent. The invention also provides a thick film heating body prepared from the dielectric paste. A dielectric layer formed by the dielectric paste is compact, free of cracking, high in binding force with stainless steel, good in breakdown voltage resistance and excellent in electrical property.

The invention discloses a preparation method of conductive paste for a solar cell, and relates to the technical field of solar cell preparation. The preparation method comprises the following steps: adding a copper source, a surfactant, a dispersant and a brightness modifier into a solvent to obtain a first mixed solution; adding a reducing agent and a chelating agent into a solvent to obtain a second mixed solution; the first mixed solution and the second mixed solution are mixed according to the preset volume ratio, a third mixed solution is obtained, and seed copper powder with the preset mass fraction is added into the third mixed solution; the third mixed solution after the reaction is sequentially subjected to sedimentation cooling treatment, centrifugal treatment, drying treatment and grinding treatment, micron-sized copper powder is prepared, a conductive silver layer is deposited on the surface of the micron-sized copper powder through chemical reduction reaction, silver-coated copper powder is prepared, and the conductive paste is prepared through the silver-coated copper powder. The micron-sized copper powder prepared through the method can meet the high target size interval yield, the preparation cost is low, and the process compatibility is high.

The application provides an edible enzyme cross-linking color drawing coating, a preparation method and application, and belongs to the technical field of food packaging materials, and comprises the following components in percentage by weight: 4-10% of edible connecting material, 0.1-3% of biological cross-linking enzyme, 1-6% of microcapsule natural pigment, 1-5% of enzyme activity aid, 0.1-1% of rheological modifier, 1-5% of plasticizer, and the rest is solvent; the biological cross-linking enzyme comprises one or more combinations of glutamine transaminase, laccase, tyrosinase, polyphenol oxidase, peroxidase and lysine oxidase. The biological cross-linking enzyme is used to catalyze the connecting material and the casing substrate to form a covalent bond, so that the defects of weak adhesion and easy peeling of the traditional physical adsorption type coating are fundamentally overcome, the coating is non-toxic and non-residual, conforms to the clean label trend, realizes the perfect combination of food safety and excellent processing performance, and has high industrialization value.

The application discloses a kind of mask pastes, the mask pastes is made of the following raw materials: resin, organic solvent, inorganic filler, pigment;The resin includes resin A1, resin A2, resin B1 and resin B2, wherein the resin A1 has first hydrophilic group, the resin A2 has first lipophilic group, the number N1 of first hydrophilic group is 200-2000, the number M1 of first lipophilic group is 200-2000;The resin B1 has second hydrophilic group, the resin B2 has second lipophilic group, the number N2 of second hydrophilic group is 50-5000, the number M2 of second lipophilic group is 150-500.The resin component in the mask paste of the application is improved, different kinds of hydrophilic modified resin and lipophilic modified resin are matched with each other, which can not only meet the excellent water washing performance of the paste, but also meet the good printing resolution of the paste, and the application range is wider.

The invention discloses additive manufacturing Fe-Mn-Ni based maraging steel and a preparation method of the additive manufacturing Fe-Mn-Ni based maraging steel. The aging steel comprises the following chemical components in percentage by mass: 8%-12% of Mn, 3%-7% of Ni, 1%-3% of Al, 0.5%-1.5% of Mo, 0.25%-1.25% of Ti and the balance of Fe and inevitable impurities. According to the invention, Ni is partially replaced by Mn, so that a martensite matrix is ensured, and meanwhile, stable austenite is introduced to realize the obdurability balance of the material; meanwhile, by means of the synergistic effect of Al, Mo and Ti elements, a high-density nanoscale precipitated phase is formed in the aging process to guarantee the strength of the material. According to the alloy, Co-free maraging steel is achieved, and the raw material cost is greatly reduced. After optimization, the tensile strength of the material is not lower than 1250 MPa, the percentage elongation after fracture is not lower than 20%, and excellent balance of strength and plasticity is achieved.

The application discloses a preparation method of heat-resistant resin and organic silver paste electronic paste, comprising the following steps: S1, preparation of heat-resistant modified carrier: mixing bismaleimide resin and phenolic epoxy resin, adding silane coupling agent, heating and stirring; then cooling, adding organic solvent and rheological additive, continuing to stir and vacuum defoaming to obtain the heat-resistant modified carrier, the heat-resistant resin system of bismaleimide and phenolic epoxy blending is adopted, the decomposition temperature is as high as 300 DEG C or above, the adhesion force decline rate of the silver layer to the substrate is less than 10% under long-term aging test at 200 DEG C, which is far superior to traditional epoxy silver paste.

The present invention provides a polyethylene composition and a biaxially stretched film comprising the thereof, the composition having excellent mechanical properties and tensile stability, as well as excellent film processability and production efficiency, and is suitable for producing biaxially stretched films with high shrinkage resistance, printability and transparency.

The invention relates to fiber-reinforced 3D printing bio-ink and a preparation method thereof.The fiber-reinforced 3D printing bio-ink is prepared from, by mass, 1.0-20.0 parts of gelatin, 0.1-10.0 parts of sodium alginate, 0.01-10 parts of pretreated bacterial cellulose dispersion liquid and 60-100 parts of water, and the pretreated bacterial cellulose dispersion liquid is prepared through the following steps that water is added into bacterial cellulose gel to be smashed, and the smashed bacterial cellulose gel is dried to obtain the fiber-reinforced 3D printing bio-ink; a colloid mill is used for circulation for 2-4 times, the rotating speed is 5000-15000rpm, the gap is 30-100 microns, vacuum defoaming is conducted for 10-20 min, and the pretreated bacterial cellulose dispersion liquid is obtained.

This invention provides a multi-component copolyester and its preparation method, belonging to the field of polyester technology. The multi-component copolyester of this invention comprises: component A, a dicarboxylic acid compound, based on the total molar amount of component A, including: a1, 35-65 mol% aliphatic dicarboxylic acid; a2, 35-65 mol% aromatic dicarboxylic acid or its derivatives; component B, 1,4-butanediol; and component C, a third monomer, based on the total molar amount of components B and C, wherein component C accounts for 5-30 mol%. The crystallinity of the multi-component copolyester is 5-22%, and the zinc content in the multi-component copolyester is ≤100 ppm, and the titanium content is ≤120 ppm. The multi-component copolyester of this invention uses waste polyester as raw material and, through primary alcoholysis, secondary alcoholysis, transesterification, and polycondensation steps, obtains a multi-component copolyester with low heavy metal content, suitable crystallinity, good printability, and good biodegradability.

The present application relates to the technical field of laminated glass interlayer film, and particularly relates to a kind of interlayer synergistic anti-aging PVB composite interlayer film and its preparation method and application.The present application is based on the technical route of interlayer synergistic antioxidant system, adopts the multilayer structure of "core sound insulation layer+double surface layer", and constructs interlayer synergistic antioxidant system by precisely distributing different types of antioxidants, realizes interlayer function synergy, improves the compatibility of antioxidant and heat shielding material, while ensuring sound insulation and thermal insulation performance, significantly improves the anti-aging stability of interlayer synergistic anti-aging PVB composite interlayer film, solves the technical problems that the existing PVB interlayer film has single antioxidant adding mode or unreasonable distribution, poor compatibility with heat shielding material, leading to sound insulation performance attenuation, serious yellowing and heat insulation efficiency decline during long-term use, and has wide application prospect.

This invention provides a direct-write printing method for preparing a three-dimensional porous polyimide-hollow glass microsphere composite material and the resulting material. The method includes: S1 preparing a soluble polyimide-hollow glass microsphere composite material; S2 preparing a direct-write printing composite ink; S3 direct-write printing and humidification pre-gelling; S4 solvent-inducing phase transition curing to create pores; and S5 low-temperature drying to obtain the finished product. This invention utilizes chemical bonding to construct an organic-inorganic cross-linked network, avoiding interfacial gaps and filler sedimentation. It eliminates the need for photosensitizers and high-temperature treatment, resulting in a simple process, high molding precision, and low shrinkage. The prepared composite material possesses a nanoscale three-dimensional interconnected porous structure with strong interfacial bonding, lightweight yet high strength, and excellent thermal insulation properties. It effectively solves the problems of easy collapse, uneven pore size, and complex processes in existing 3D printing of porous polyimide materials, making it suitable for applications such as thermal insulation, sound absorption, and catalyst support.