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476results about "Inorganic compound addition" patented technology

Biomass-based reinforcing agent for paper and application of biomass-based reinforcing agent

The invention discloses a biomass-based reinforcing agent for paper and application of the biomass-based reinforcing agent. The reinforcing agent comprises a biomass-based material, the biomass-based material comprises a micron-sized structure and a nano-sized structure distributed on the micron-sized structure. The reinforcing agent prepared by the invention has abundant nanostructures, is beneficial to physical crosslinking such as entanglement and bridging of fibers in paper pulp, and improves the wet strength of paper; the preparation of the reinforcing agent is a simple physical process, and a complex synthesis chemical process for synthesizing a polymer in a traditional organic reinforcing agent is avoided; the reinforcing agent is prepared by a dissolution regeneration method, so that the energy consumption is low, the solvent can be recycled and reused, no chemicals are consumed, and the reinforcing agent is environment-friendly; the reinforcing agent prepared by the invention can achieve a satisfactory wet strength effect at a lower content.
Owner:HANGZHOU GREEN MICRO-NANO TECH CO LTD

Cationic core-shell PHA (Polyhydroxyalkanoate) nano-emulsion enhancer as well as preparation and application

The invention discloses a cationic core-shell PHA nano-emulsion reinforcing agent as well as preparation and application thereof, and belongs to the technical field of papermaking chemicals. The problems that a traditional wet strength agent is poor in environmental protection property and difficult to recycle, and a conventional bio-based material needs high-temperature curing and is high in energy consumption are solved. According to the reinforcing agent, low-MFFT bio-based polyhydroxyalkanoate is used as a core, and a positive ion shell layer with strong positive charges is wrapped outside the core. The method has the core advantages that extra high-temperature curing is not needed, the film can be efficiently formed under the conventional 105 DEG C drying condition, and the energy consumption is remarkably reduced; meanwhile, high dry and wet strength and water resistance are achieved, the treated paper has excellent re-pulping recycling suitability, and the industrial pain point that traditional wet strength paper is difficult to recycle is solved.
Owner:DU BAI CHENG NEW MATERIAL TECH (SHANGHAI) CO LTD +3

Low-temperature heat-sealing water-based coated paper as well as preparation method and application thereof

PendingCN121556293AFlexible coversDefoamers additionPhytic acidCross linker
The invention relates to the field of packaging materials, and discloses low-temperature heat-sealing water-based coated paper and a preparation method and application thereof.The water-based coated paper comprises a base paper layer and a water-based coating, and the water-based coating comprises water-based ethylene-acrylic acid copolymer emulsion, modified nano-silica, a coalescing agent and water; a cardanol derivative is introduced into the water-based ethylene-acrylic acid copolymer emulsion as a functional component; the cardanol derivative is prepared by reacting epoxidized cardanol with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and then grafting with acryloyl chloride. The preparation method comprises the following steps: reacting epoxidized cardanol with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide; the modified nano silicon dioxide is prepared by mixing aminated nano silicon dioxide and chitosan and adding a cross-linking agent prepared by grafting phytic acid and ethylene glycol diglycidyl ether. The water-based coating paper prepared by the invention overcomes the defects that the existing BOPP film is not environment-friendly, and the conventional coating paper is high in heat sealing temperature and easy to stick; meanwhile, good mechanical properties, water resistance and flame retardance are achieved.
Owner:JIANGXI RUIZE PAPER-BASED ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD

Body paper for aluminum spraying and preparation method thereof

The invention discloses base paper for aluminum spraying and a preparation method thereof, and relates to the technical field of base paper. The preparation method comprises the following steps: pulping softwood pulp, then adding deionized water to dilute the softwood pulp until the mass concentration is 0.8%-1%, then adding modified gel particles, modified bentonite and a PAE wet strength agent, adjusting the pH value to 6.5-7.5, stirring for 40-60 minutes, and then adding deionized water to dilute the softwood pulp until the mass concentration is 0.5%-0.7% to obtain mixed paper pulp; and then making the mixed paper pulp into paper sheets, squeezing, drying, coating the surface layer coating on the surface of base material paper, and drying with hot air to obtain the body paper for aluminum spraying. According to the invention, the modified gel particles and the modified bentonite are added, so that the mildew-proof and moisture-proof capabilities of the base paper for aluminum spraying are effectively improved; the introduction of the surface coating further improves the mildew-proof and moisture-proof capabilities. Therefore, the method has a wider application prospect.
Owner:WELBON SPECIAL MATERIALS CO LTD

Silica powder modified paperboard material of embossed frame paper for cigarettes and preparation method of silica powder modified paperboard material

The invention discloses a silica powder modified paperboard material of embossed frame paper for cigarettes and a preparation method of the silica powder modified paperboard material, and belongs to the field of advanced inorganic non-metallic materials. The material comprises bleached chemical wood pulp, core-shell structure in-situ modified nano silicon micropowder, an auxiliary agent and a latent temperature-sensitive cross-linking agent, a modification system contains a compound silane coupling agent and amino modified organosilane, and a dual network of static triple cross-linking and dynamic secondary cross-linking is formed; the nanometer silicon micro powder is of a core-micro-nano protrusion-shell multilevel structure, a shell layer is thermoplastic resin containing latent epoxy groups, and a double-peak particle size distribution design is adopted. The preparation process is realized through in-situ generation modification, high-speed shearing fusion and an embossing-shaping integrated closed-loop control process, and is adaptive to an existing fourdrinier papermaking production line. The product quantification is 210-220 g / m < 2 >, the transverse stiffness is larger than or equal to 210 mN.m, the embossing retention rate is larger than or equal to 99.5%, after 50 cycles at the temperature of-5 DEG C-40 DEG C and the humidity of 30%-80%, the stiffness is reduced by smaller than or equal to 3%, the barrier property is reduced by smaller than or equal to 6%, the printing adsorption uniformity error is smaller than or equal to 3%, and the barrier property and the environmental protection property are excellent. The method solves the problems of agglomeration, embossing resilience, multi-performance contradiction, poor environmental stability and other pain points of conventional modified filler, realizes the cooperation of low quantification and high performance, conforms to the high-end and green requirements of the tobacco industry, can pass the application of strategic emerging industry priority review channels, and has a wide application prospect.
Owner:JIANGSU JIAYI PACKAGING TECH CO LTD

Method for solving linting and dusting during paperboard printing

The invention discloses a method for solving linting and dusting during paperboard printing, and belongs to the technical field of papermaking. Comprising the following detailed steps: a slurry preparation process, surface sizing treatment and a drying and curing process, in the slurry preparation process, various high-quality fiber raw materials are carefully selected and mixed, the proportion of various fibers is accurately controlled according to the expected performance and quality requirements of the paperboard, and meanwhile, a proper amount of auxiliaries are added; and the binding force between the fibers and the strength of the paper are enhanced. The raw material ratio in the paperboard production process is precisely regulated and controlled, the specially-made composite surface sizing agent is adopted for surface treatment, and scientific and reasonable drying and curing processes are matched, so that the problems of linting and powdering of the paperboard in the printing process are effectively solved, and the printing quality and the production efficiency of the paperboard are improved.
Owner:ANHUI HUABANG NEW MATERIALS CO LTD

Preparation method of high-definition electronic screen protection paper

The invention relates to the technical field of papermaking, in particular to a preparation method of high-definition electronic screen protection paper. According to the method, regenerated cellulose fibers serve as main raw materials, functional composite fibers of a core-shell structure are constructed, a core layer is the regenerated cellulose fibers, a shell layer is a polypyrrole / graphene composite conductive layer, and the lasting antistatic performance is achieved; meanwhile, the surface-modified nano silicon dioxide aerogel particles are introduced, so that the optical performance and the mechanical strength are improved; then compounding with polyimide fibers modified by a silane coupling agent, adding a bio-based wet strength agent and a fluorocarbon defoaming agent, and carrying out the steps of plasma pretreatment, pulping, on-net papermaking, controllable drying, magnetron sputtering surface treatment and the like to prepare the protective paper. The obtained protective paper has the characteristics of being ultrathin, high in strength, high in light transmittance, lasting in antistatic property and the like, and is suitable for protection of high-end liquid crystal display screens and OLED screens.
Owner:ZHEJIANG KAIFENG NEW MATERIAL CO LTD

Carboxymethyl modified bamboo fiber diversion paper as well as preparation method and application thereof

The invention relates to the field of diversion paper, in particular to carboxymethyl modified bamboo fiber diversion paper and a preparation method and application thereof.The preparation method comprises the steps that S1, bamboo fibers are soaked in sodium hydroxide to obtain an activation system containing activated bamboo fibers; s2, sodium chloroacetate is added into the activation system containing the activated bamboo fibers, and carboxymethylated bamboo fibers are obtained; s3, excessive acid is added into the carboxymethylated bamboo fibers, washing is performed after sufficient reaction, and carboxymethyl modified bamboo fibers are obtained; s4, after the carboxymethyl modified bamboo fibers and the unmodified bamboo fibers are mixed and dispersed, a cationic polyester wet strength agent is added for papermaking forming, and the carboxymethyl modified bamboo fiber diversion paper is obtained after drying. According to the carboxymethyl modified bamboo fiber diversion paper, carboxymethyl is introduced to the bamboo fibers, the hydrophilicity of the bamboo fibers can be effectively improved, the diversion efficiency of the carboxymethyl modified bamboo fiber diversion paper is improved, then the carboxymethyl modified bamboo fibers and the unmodified bamboo fibers are mixed to prepare the carboxymethyl modified bamboo fiber diversion paper, and the carboxymethyl modified bamboo fiber diversion paper further has ideal tensile strength.
Owner:SICHUAN HUANLONG NEW MATERIAL

Medical packaging box and preparation process

The invention discloses a packaging box special for medical treatment, and relates to the field of packaging boxes for medical treatment. The plant fiber composite material is prepared from the following raw materials in parts by weight: 80-95 parts of plant fiber slurry, 3-10 parts of chitosan, 5-15 parts of polylactic acid, 1-5 parts of nano silicon dioxide, 0.5-3 parts of an environment-friendly water repellent agent, 2-8 parts of reinforced fibers, 3-8 parts of a reversible moisture absorption phase change material and 0.1-0.5 part of a degradation indicating pigment. The plant fiber slurry is adopted as a bio-based framework, chitosan microfibers, polylactic acid, nano silicon dioxide, a reversible moisture absorption phase change material and other functional components are innovatively introduced, and an antibacterial trigger layer and degradation indication pigment on the inner surface are matched, so that the packaging box keeps good mechanical strength and structural stability, and meanwhile the packaging box has the advantages that the packaging box is not prone to deformation, and the service life is prolonged. And multiple functions of active on-demand antibiosis, dynamic humidity adjustment, visual degradation tracking and full bio-based degradability are achieved.
Owner:ZHEJIANG DELI PACKAGING CO LTD

Framework paper for cigarettes and preparation process thereof

The invention relates to the technical field of manufacturing of coated paperboards, in particular to frame paper for cigarettes and a preparation process of the frame paper. The problem that the mechanical property and the barrier property cannot be considered at the same time in the prior art is solved. According to the frame paper for the cigarettes, the bleached hardwood pulp and the softwood pulp are compounded, and the calcium carbonate and the nanocellulose crystals are added to prepare the high-uniformity modified paper base; then, polycaprolactone diol, isophorone diisocyanate, dimethylolpropionic acid and 1, 4-butanediol are subjected to a reaction, aminopropyltriethoxysilane is used for blocking, obtained polyurethane emulsion is mixed with gelatinized starch and flaky kaolin step by step, and the composite coating is prepared; coating double surfaces of the modified paper base with the composite coating, and performing step-by-step drying, hot-pressing shaping and curing to obtain the paper. Through multi-stage cooperation of paper base-coating-process, the frame paper has excellent mechanical properties, high printing stability and high barrier property, and is suitable for the field of high-grade cigarette packaging with strict performance requirements.
Owner:JIANGSU JIAYI PACKAGING TECH CO LTD

High-retention and high-weather-resistance titanium dioxide as well as preparation method and application thereof

The invention relates to the technical field of titanium dioxide production, in particular to high-retention and high-weather-resistance titanium dioxide as well as a preparation method and application thereof. Comprising a titanium dioxide base material and a coating layer located on the surface of the titanium dioxide base material, and the coating layer sequentially comprises an aluminum oxide film layer, a tin oxide film layer and an ascorbyl palmitate film layer from inside to outside. The preparation method comprises the following steps: preparing titanium dioxide-based material slurry, sequentially carrying out aluminum oxide coating and tin oxide coating, then carrying out water washing, flash evaporation and steam powdering, and adding ascorbyl palmitate in the steam powdering process to obtain the high-retention and high-weather-resistance titanium dioxide. The tin coating layer and the ascorbyl palmitate coating layer are introduced to the outer side of the aluminum oxide coating layer, so that the retention rate and weather resistance of titanium dioxide in paper are remarkably improved, and the use requirements of high-end paper are met; the white water treatment pressure can be reduced, and the economic benefit is improved.
Owner:LOMON BILLIONS GRP CO LTD +1

Preparation method of all-bamboo-fiber basic color paper cup body paper and product of all-bamboo-fiber basic color paper cup body paper

The invention discloses a preparation method of all-bamboo fiber basic color paper cup body paper and a product thereof, and the preparation method comprises the following steps: mechanically grinding bamboo chemical pulp fibers and bamboo chemical thermo-mechanical pulp fibers as raw materials, carrying out biological treatment on the bamboo chemical thermo-mechanical pulp fibers by using laccase / mediator, and preparing the paper cup body paper by adopting a three-layer composite papermaking process. The paper cup body paper is composed of a surface layer (bamboo chemical pulp), a core layer (bamboo chemical thermo-mechanical pulp treated by laccase / ABTS) and a bottom layer (bamboo chemical pulp), and aluminum sulfate, rosin size and CPAM are added in the papermaking process. The technical problems that the production cost is high due to the fact that traditional unbleached paper cup body paper depends on wood pulp, and bamboo pulp fibers are difficult to give consideration to high bulkness and high strength are solved, the raw material cost is low, the production process is environmentally friendly, the product has excellent physical strength, bulkness and water resistance, wood resource consumption can be reduced, and sustainable development of the papermaking industry is promoted.
Owner:FUJIAN AGRI & FORESTRY UNIV

Pulp sheets for fluff pulp, fluff pulp, and products containing fluff pulp

The present invention provides a pulp sheet for producing fluff pulp that has excellent deodorizing properties, good crushability, and easily recovers its bulk after compression. [Solution] A pulp sheet for producing fluff pulp is prepared by blending (A) softener kraft pulp, (B) metal ion-containing cellulose fibers having ionic substituents and containing ions of one or more metal elements selected from Ag, Au, Pt, Pd, Ni, Mn, Fe, Ti, Al, Zn, or Cu, and (C) softener, such that (C) is 0.1 to 50 parts by mass per 100 parts by mass of the total of (A) and (B).
Owner:NIPPON PAPER IND CO LTD

Co-MOFs modified carboxymethylated filter paper composite material as well as preparation method and application thereof

The invention belongs to the technical field of drug-loaded release, and particularly relates to a Co-MOFs modified carboxymethylated filter paper composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: performing carboxymethylation treatment on filter paper to obtain carboxymethylated filter paper; soaking the carboxymethylated filter paper in a cobalt ion solution; and then adding an organic ligand solution to obtain the Co-MOFs modified carboxymethylated filter paper composite material. The preparation method has the advantages of mild reaction conditions and simplicity in operation; the Co-MOFs modified drug-loaded paper has good antibacterial performance and drug slow release performance, can be used as a medical dressing for promoting wound healing, and has important application value.
Owner:山东中巽化工有限公司

An insulating oil and paper insulation system containing superhydrophobic nanoparticles, its preparation method and application

PendingCN122082290AAvoid heat damageImprove impregnation efficiencySpecial paperPaper/cardboardSuperhydrophobeNanoparticle
This invention relates to an insulating oil and an oil-paper insulation system containing superhydrophobic nanoparticles, as well as their preparation method and application, belonging to the field of electrical equipment insulation technology. This invention provides an insulating oil containing superhydrophobic nanoparticles, wherein the superhydrophobic nanoparticles are silane-modified nanoparticles, and the nanoparticles include at least one of SiO2, TiO2, and h-BN; the insulating oil includes at least one of mineral insulating oil, synthetic insulating oil, and natural ester insulating oil. This invention achieves the superhydrophobicity of the nanoparticles and good compatibility with the oil phase through silane modification. Adding silane-modified nanoparticles to the insulating oil effectively reduces the water content of the insulating oil and optimizes the interfacial performance of the oil-paper. Combined with the low-temperature, high-efficiency, and uniform rapid impregnation process of this invention, the overall electrical performance and service life of the oil-paper insulation system are significantly improved.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID CO LTD

Absorbent paper as well as preparation method and application thereof

PendingCN121976424AAntibacterial, highly effective and long-lastingGood dispersionSpecial paperReinforcing agents additionBiotechnologySodium bicarbonate
The invention relates to absorbent paper as well as a preparation method and application thereof. The method comprises the following steps: pulping plant fiber pulp, adding sodium bicarbonate for pretreatment, and washing to obtain pretreated paper pulp; adding a dispersing agent, a wet strength agent and a composite antibacterial component into the pretreated paper pulp, and uniformly mixing to obtain mixed paper pulp; the composite antibacterial component is prepared from chitosan, polylysine and a modified copper oxide dispersion liquid; feeding the mixed paper pulp into a rotary screen paper machine to produce upper-layer single-layer wrinkling base paper, then compounding the upper-layer single-layer wrinkling base paper with lower-layer single-layer semi-forming base paper on which the macromolecular water-absorbent resin particles are scattered, and then drying to obtain the water-absorbent paper. The antibacterial rate of the absorbent paper on various pathogenic bacteria is larger than or equal to 99.5%, the antibacterial rate is still larger than or equal to 97% after 20 times of water washing, and the absorbent paper is high in water absorption speed, stable in physical performance, safe, environmentally friendly, controllable in cost, capable of being widely applied to the fields of hygienic products, medical dressings, food packaging and the like, simple in preparation process and suitable for industrial production.
Owner:NUO CHEN CO LTD

Flexible fibrous paper and method of making same and fire resistant cable wrapping material

The present application belongs to the field of thermal insulation materials, and particularly relates to a flexible fiber paper and a preparation method thereof and a fire-resistant cable wrapping material. The flexible fiber paper comprises first fibers which are porous silica fibers, and the diameter of the first fibers is 300 nm to 2000 nm, and the porosity of the flexible fiber paper is 85% to 99.6%. The flexible fiber paper has high flexibility, and no fold marks are generated after 500 times of 180-degree bending, and the flexible fiber paper has high thermal insulation performance.
Owner:SHENZHEN ZHONGROU TECHNOLOGY CO LTD

Environment-friendly lining paper and preparation method thereof

The invention relates to the technical field of cigarette packaging materials, in particular to environment-friendly lining paper and a preparation method thereof. The problem that the environment-friendly lining paper is insufficient in tensile strength and barrier property is solved. Paper pulp fibers are compounded with nano fibrillated cellulose and homogenized under high pressure, cationized lignosulfonate and nano montmorillonite slurry are compounded in homogenized slurry, glyoxal is used for in-situ crosslinking, and an internal'brick-mud 'bionic barrier structure is constructed; after the paper sheet is formed, the surface of the paper sheet is coated with an acetylation modified hemicellulose blocking agent, thermocuring is carried out, a gradient structure is constructed cooperatively, the tensile strength, the water vapor blocking property and the aroma blocking property of the lining paper are improved, and the used raw materials are derived from biomass and natural minerals and are green and environment-friendly.
Owner:JIANGSU JIAYI PACKAGING TECH CO LTD

High-temperature-resistant insulation paper and preparation method thereof

The invention discloses high-temperature-resistant insulation paper and a preparation method thereof. The insulation paper comprises reinforced fibers, a heterostructure composite filler and a resin matrix, the heterostructure composite filler is composed of boron nitride nanosheets, surface modified mica powder and silicon dioxide nanowires growing on the surfaces of the boron nitride nanosheets in situ, and the silicon dioxide nanowires extend and are embedded into an interlayer structure of the surface modified mica powder, so that the silicon dioxide nanowires and the surface modified mica powder are connected into a whole; the resin matrix is formed by epoxy group modified organic silicon resin and sulfydryl modified polysiloxane through a synergistic curing process of firstly initiating a click chemical reaction by ultraviolet light and then initiating a condensation polymerization reaction by heat treatment. The preparation method comprises the steps of preparation of the heterostructure composite filler, preparation of a dual-curing resin composition, multi-layer papermaking of gradient slurry, introduction of resin and synergistic curing of ultraviolet light and heat treatment. The insulating paper is especially suitable for being used as an insulating part of electrical equipment under a high-temperature working condition.
Owner:YILI TECH TONGSHAN CO LTD

High-strength corrugating base paper and production method thereof

The invention belongs to the technical field of papermaking, and particularly relates to high-strength corrugated base paper and a production method thereof. The method comprises the following steps: respectively preparing waste paper pulp and natural color chemithermomechanical pulp with 20-35-degree SR beating degree through independent preparation lines; then, mixing the two kinds of pulp in a drifting system according to the proportion of 20-50% of natural color chemimechanical pulp, and adding a ternary retention aid composed of cationic retention aids polyacrylamide with the molecular weight of 8-10 million and cationic retention aids polyacrylamide with the molecular weight of 3-6 million and bentonite; and finally, the mixed pulp is put on a net to be formed, surface sizing is conducted on paper sheets, and sizing paint comprises corn starch, starch converting enzyme, styrene acrylate emulsion, AKD emulsion and aluminum sulfate. Through the synergistic effect of branching pulping, proportion optimization, a special chemical system and surface treatment, high-proportion waste paper replacement is achieved, meanwhile, the paper forming strength is guaranteed and improved, the production cost is effectively reduced, and remarkable economic benefits are achieved.
Owner:SHANDONG RENFENG SPECIAL MATERIALS

High-strength water-resistant corrugated paper and its application in waterproof cartons

This invention belongs to the field of corrugated paper technology, specifically relating to a high-strength, water-resistant corrugated paper and its application in waterproof cartons. This invention involves comprehensively treating the corrugated core paper using an impregnation solution and a coating. The impregnation solution utilizes modified silica sol and boron quantum dots to modify titanium dioxide, while the coating is modified to remove hydroxyethyl cellulose. This process yields a high-strength, water-resistant corrugated paper that significantly increases edge crush strength, improves the oxygen index, and effectively reduces water absorption.
Owner:广东世腾智慧科技有限公司 +1

A substrate material for gas diffusion layers and its use in polymer electrolyte membrane fuel cells

The application provides a kind of gas diffusion layer base material and its application in polymer electrolyte membrane fuel cell, the preparation of base material includes the following steps: S1, graphene oxide is added to n-hexane, nanofibrous iron-nickel alloy powder and melamine are stirred, the solution is moved to high-pressure reactor for hydrothermal reaction, calcination is carried out under inert gas atmosphere, product is obtained, the product is stirred in hydrochloric acid solution, filtration and washing are carried out, and N / C@Ni material is obtained;S2, short carbon fiber, modified polyurethane and adhesive are prepared into raw paper by dry papermaking or wet papermaking;S3, N / C@Ni material is added to anhydrous ethanol to obtain a solution, the raw paper of S2 is immersed in the solution, vacuum treatment, hot pressing, carbonization, and the target gas diffusion layer base material is obtained.The gas diffusion layer base material of the application has the characteristics of thin thickness and stable structure, can reduce the waterlogging phenomenon of fuel cell, improve the mass transfer capacity, and has good application prospect.
Owner:WUHAN TEXTILE UNIV

Boron nitride-based flexible heat-conducting composite film as well as preparation method and application thereof

The invention belongs to the technical field of thermal interface materials, and particularly relates to a boron nitride-based flexible heat-conducting composite film and a preparation method and application thereof.The preparation method comprises the following steps that h-BN powder and water are mixed and subjected to ball milling, centrifugation is conducted after ball milling, supernate is taken, and BNNS dispersion liquid is obtained; carrying out differential centrifugation on the obtained BNNS dispersion liquid to obtain large-sheet-diameter BNNS, and carrying out uniform ultrasonic dispersion on the large-sheet-diameter BNNS in a differential alcohol organic solvent to obtain large-sheet-layer BNNS organic dispersion liquid; the preparation method comprises the following steps: performing oxidation modification on cellulose nanofibers by adopting a TEMPO oxidation method, and uniformly dispersing the oxidized and modified cellulose nanofibers in water to obtain an aqueous dispersion of the oxidized and modified CNF; the preparation method comprises the following steps: mixing an organic dispersion liquid of large-lamellar BNNS with an aqueous dispersion liquid of oxidation modified CNF, firstly stirring, and then carrying out ultrasonic mixing to obtain a BNNS / CNF composite dispersion liquid; and carrying out suction filtration on the BNNS / CNF composite dispersion liquid to obtain a wet film, and drying and tabletting the wet film to obtain the boron nitride-based flexible heat-conducting composite film. The preparation method is suitable for continuous and large-scale preparation of the high-performance boron nitride-based composite heat-conducting film.
Owner:SHANDONG INST OF ADVANCED TECH

Multi-layer composite digital printing paperboard

The utility model discloses a multilayer composite digital printing paperboard, which relates to the field of paperboard structures and comprises a surface layer, a core layer and a bottom layer, and a composite water-resistant system formed by combining zirconium carbonate amine and alkenyl succinic anhydride is adopted in pulp of the surface layer, the core layer and the bottom layer. According to the multilayer composite digital printing paperboard, a composite water-resistant system formed by combining zirconium carbonate amine and alkenyl succinic anhydride is specially added into the paper pulp of the surface layer, the core layer and the bottom layer of the multilayer composite digital printing paperboard, so that the zirconium carbonate amine and the alkenyl succinic anhydride are uniformly distributed in the paper pulp of each layer, the composite water-resistant system plays a key role, and the overall water-resistant performance of the paperboard is remarkably improved. Even in a humid environment, the paper board is not prone to absorbing water, the problems of deformation, strength reduction and the like can be avoided, and therefore the paper board can be well matched with a water vapor contact packaging scene, and the using effect is guaranteed.
Owner:ZHEJIANG RONGSHENG PAPER IND HLDG

Biodegradable acoustic damping material and method for producing the same

A biodegradable sound-absorbing acoustic damping material and a method for producing the same are provided. The material comprises a mixture of dried seaweed powder, fine cellulose fiber raw materials, and water. The preparation of the material involves mixing all the components into a homogeneous paste, shaping the paste, and then dehydrating it to obtain a solid paste.
Owner:SEA CORK STUDIO INC

A 50-160g one-time molding flame-retardant double-coated paper and its preparation method

Brief Introduction: This invention discloses a 50-160g one-piece, single-piece flame-retardant offset paper and its preparation method. It is compatible with both white and natural colors, and is produced using a single papermaking machine. In-pulp flame retardancy and on-machine online flame-retardant sizing are completed simultaneously, eliminating the need for secondary processing. The product combines excellent printing and writing performance with B1-level flame retardancy, making it suitable for office, printing, writing, and archival paper applications. It features stable processing, comprehensive protection, and high market value.
Owner:HEBEI MODA PAPER CO LTD

Degradable carton containing modified plant fibers and preparation method of degradable carton

The invention discloses a degradable carton containing modified plant fibers and a preparation method of the degradable carton, and relates to the technical field of carton production. According to the degradable carton containing the modified plant fiber, the degradable carton is formed by splicing corrugated boards, and the corrugated boards are prepared from, by mass, 45-60 parts of the modified plant fiber, 25-35 parts of paper pulp, 5-10 parts of a biodegradable adhesive, 5-15 parts of filler, 1-5 parts of a reinforcing agent, 0.5-3 parts of a waterproof agent and 90-110 parts of deionized water. Through synergistic modification of alkali treatment and an exclusive interface coupling agent, hydrophilic hydroxyl groups on the surfaces of the natural plant fibers are effectively hydrophobized, and the interface compatibility and dispersion uniformity between the fibers and a paper pulp matrix are remarkably improved, so that the overall compressive strength and structural stability of the carton are greatly improved; the problem that the mechanical property is reduced due to direct use of natural plant fibers is solved.
Owner:SHANGHAI HUIXIONG PACKAGING CO LTD

Wet strength improved fibrous non-woven fabrics, in particular paper, uses of these wet strength fabrics as well as production methods of the same

PendingUS20260009172A1Surfactants additionReinforcing agents additionFiberPolymer science
Novel environmentally friendly, wet strength improved fibrous non-woven fabrics, optionally paper, impregnated with a mixture including a silicon component, further including water and / or an alcohol and / or a surfactant and a catalyst. Also encompassed are methods for production and uses of such wet strength improved fibrous non-woven fabrics.
Owner:TECH UNIV DARMSTADT