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1205results about "Inorganic compound addition" patented technology

Starch-cellulose composite material

A composite can include cellulose fiber; and foam binding the cellulose fiber. A method for manufacturing a composite can comprise mixing a plurality of ingredients to form a pre-foam mixture; foaming the pre-foam mixture to produce a foam; mixing the foam with cellulose fiber to form a composite material; and curing the composite material.
Owner:PRATT CORRUGATED HOLDINGS INC

Starch-cellulose composite material

A composite can include cellulose fiber and foam binding the cellulose fiber. A method for manufacturing a composite can comprise mixing a plurality of ingredients to form a pre-foam mixture, foaming the pre-foam mixture to produce a foam, mixing the foam with cellulose fiber to form a composite material, and curing the composite material.
Owner:PRATT CORRUGATED HOLDINGS INC

Large-size green packaging carton and preparation process thereof

The invention discloses a large-size green packaging carton and a preparation process thereof, and relates to the field of packaging box preparation. The environment-friendly composite material comprises the following raw materials in parts by weight: 50-80 parts of plant fiber slurry, 10-25 parts of a modified starch-based adhesive, 5-15 parts of a nanoscale inorganic reinforcing filler, 1-5 parts of a degradable water repellent agent, 0.5-3 parts of a cross-linking agent and 2-8 parts of starch and plant fiber composite buffer microspheres. According to the preparation method, full-environment-friendly raw materials such as plant fiber slurry and a modified starch-based adhesive are selected and matched with starch and plant fiber composite buffer microspheres, and optimized processes such as segmented temperature control pressurization molding, adhesive gelatinization treatment, stirring speed reduction and microsphere structure protection are combined; and through coating of the degradable polymer coating and micron-sized hydrophobic texture imprinting, synergistic improvement of high compressive strength, excellent buffering performance, excellent hydrophobic and damp-proof effects and high degradation rate of the carton is achieved.
Owner:ZHEJIANG DELI PACKAGING CO LTD

Aramid fiber filter paper as well as preparation method and application thereof

The invention particularly relates to a preparation method of aramid fiber filter paper, which comprises the following steps: step (1), aramid pulp fibers are added into a dispersion liquid for multiple times for dispersion treatment to obtain gradient-size aramid mixed fibers, and the dispersion liquid comprises a dispersing agent, strong base and a solvent; (2) mixing the gradient-size aramid fiber mixed fiber with water, and mechanically stirring at a high speed to obtain gradient-size aramid fiber mixed fiber slurry; and (3) processing and forming the gradient-size aramid fiber mixed fiber slurry to obtain the aramid fiber filter paper. The invention further relates to aramid fiber filter paper and application thereof. The aramid fiber filter paper disclosed by the invention is high in filter precision and low in filter resistance, and can be used as a hierarchical composite material.
Owner:CNNC NUCLEAR POWER OPERATION MANAGEMENT CO LTD +3

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

High-strength tipping paper base paper for cigarettes and preparation process of high-strength tipping paper base paper

The invention relates to the technical field of papermaking, and particularly provides high-strength tipping base paper for cigarettes and a preparation process of the high-strength tipping base paper. The tipping paper base paper for the cigarettes comprises a fiber raw material; functionalizing the nano cellulose; a cellulase; a dry strength agent; a wet strength agent; and a sizing agent. Nano cellulose is functionalized and a synergistic stepped enhancement mechanism is constructed, so that the synergistic breakthrough of the high-strength raw tipping paper for cigarettes in the aspects of strength, wet strength and air permeability is realized; after the functionalized nanocellulose is subjected to carboxylation treatment, the hydrogen bond and electrostatic adsorption between the functionalized nanocellulose and the fiber are enhanced, and the bonding strength in a dry state and a wet state is remarkably improved; meanwhile, the wet strength agent is added in stages, and the adsorption sequence of the dry strength agent is optimized, so that the reinforcing agent constructs a stable three-dimensional network framework in the paper sheet, and the end breaking risk under high-speed winding is effectively reduced.
Owner:ZHEJIANG TANGFENG SPECIAL PAPERS CO LTD

Straw paper mulching film based on thermo-mechanical pulp as well as green preparation method and application of straw paper mulching film

The invention discloses a straw paper mulching film based on thermo-mechanical pulp as well as a green preparation method and application of the straw paper mulching film. The invention belongs to the field of biomass resource utilization. Aiming at the defects in the prior art, the invention provides a green preparation method of a straw paper mulching film based on thermo-mechanical pulp. According to the method, the staged hydrothermal grinding technology is adopted, washing is not needed, the acidic paper pulp is directly obtained, and the technological process is simplified. Meanwhile, the invention innovatively develops a green sizing agent taking chitosan as a main material. The sizing agent can be directly fused with acidic paper pulp, and acid and alkali do not need to be additionally added for adjusting the pH value. The dry tensile index of the straw paper mulching film is larger than or equal to 15 N.m / g, the wet tensile index is larger than or equal to 5 N.m / g, the burst index is larger than or equal to 3.5 kPa.m < 2 > / g, the contact angle is larger than or equal to 105 degrees, and the 2-hour water absorption rate is smaller than or equal to 50%.
Owner:HARBIN INST OF TECH +1

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

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

Production method of a high-strength aluminized base paper

The present invention belongs to the technical field of special paper preparation, and particularly relates to a production method of high-strength aluminized base paper, comprising the steps of: S1, beating: respectively beating long-fiber primary pulp and short-fiber primary pulp, wherein the beating degree of the long fiber is 40-50°SR, and the beating degree of the short fiber is 20-30°SR; S2, adding additives: adding modified inorganic filler, cationic starch and retention aid to the short-fiber pulp; S3, pulp mixing: mixing the long-fiber pulp and the short-fiber pulp according to a weight ratio, and then adding modified bamboo fiber, and uniformly stirring to form a mixed pulp; S4, wire drawing and papermaking; S5, spraying a surface treatment agent; S6, paper drying, calendering and winding. The aluminized base paper obtained by the production method of the high-strength aluminized base paper of the present invention has the advantages of high strength and good smoothness.
Owner:XIANHE CO LTD

Folding-resistant damp-proof packaging carton and preparation method thereof

The invention belongs to the technical field of packaging carton production, and discloses a folding-resistant damp-proof packaging carton and a preparation method thereof. The folding-resistant moisture-proof packaging carton is prepared from the following raw materials in parts by weight: 70 to 80 parts of papermaking wood flour, 8 to 10 parts of filler, 30 to 40 parts of modified plant fiber, 20 to 30 parts of high-toughness plant fiber-based composite material, 8 to 10 parts of carboxymethyl cellulose and 1 to 2 parts of additive. According to the folding-resistant damp-proof packaging carton and the preparation method thereof, the defects that a packaging carton is prone to being affected with damp, cracks exist after being folded for multiple times, and the packaging carton is difficult to reuse are overcome. Through the modified plant fibers and the high-toughness plant fiber-based composite material, the folding resistance of the packaging carton is effectively improved, and meanwhile, the moisture resistance of the carton is also improved.
Owner:GUANGZHOU XINQUAN CARTON 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

Wood-based panel surface decorative paper and preparation method therefor

PCT designated stageWO2025161064A1Defoamers additionSpecial paperEpoxyPolymer science
The present invention relates to the technical field of decorative paper, and in particular to wood-based panel surface decorative paper, comprising print base paper and an adhesive film layer covering the surface of the print base paper. The adhesive film layer is made of impregnation glue liquid. The impregnation glue liquid comprises the following raw materials in parts by weight: 75-85 parts of modified polyurethane emulsion, 5-9 parts of an epoxy resin, 6-10 parts of a filler, 4-7 parts of nanocellulose, 2-3 parts of a silane coupling agent, 1.5-2.5 parts of a film-forming auxiliary agent, 0.2-0.3 parts of a defoaming agent, and 20-30 parts of water. The wood-based panel surface decorative paper comprises print base paper and an adhesive film layer covering the surface of the print base paper; the adhesion between the adhesive film layer and the print base paper is good; and the wood-based panel surface decorative paper has good wear resistance, good water vapor resistance, good cold and hot cycle resistance, and other properties, can reduce formaldehyde emission and is environmentally friendly.
Owner:GUANGDONG FUMEI NEW MATERIAL TECH CO LTD

Environment-friendly fireproof flame-retardant paper and preparation method thereof

The invention belongs to the technical field of environment-friendly paper materials, and provides environment-friendly fireproof flame-retardant paper and a preparation method thereof, and the environment-friendly fireproof flame-retardant paper is prepared from the following raw materials in parts by mass: 20-40 parts of alginate fiber, 50-80 parts of bamboo pulp fiber, 5-15 parts of a flame retardant, 2-5 parts of chitosan, 1-3 parts of nano silicon dioxide and 200-400 parts of water. The alginate fibers and the bamboo pulp fibers are used as main raw materials, and the phosphorus-nitrogen environment-friendly flame retardant and the modified magnesium hydroxide are compounded, so that the dual effects of natural flame retardance and chemical synergy are achieved; according to the invention, the flame retardant and the fibers are synchronously beaten, so that nonuniformity and agent waste caused by later-stage coating are avoided; the environment-friendly fireproof flame-retardant paper is prepared from environment-friendly materials, volatile organic compounds are not discharged in the whole process, the paper can be recycled and degraded, the binding force between modified magnesium hydroxide and fibers is high, and the physical performance of the paper can be further improved.
Owner:GUANGDONG HONGYUAN IND GRP CO LTD

A method for preparing carbon fiber paper for fuel cell gas diffusion layer

The present invention relates to the field of fuel cell technology, and in particular, to a method for preparing carbon fiber paper for a fuel cell gas diffusion layer. The method comprises the following steps: adding phenolic resin, dispersant, anti-settling agent, asphalt and graphitization template agent into a mixed solvent for mixing and dispersing to obtain a resin impregnation solution; immersing carbon fiber base paper into the resin impregnation solution for impregnation, drying, and then subjecting to hot pressing curing and graphitization treatment to obtain a final product. Asphalt is used to replace part of the phenolic resin, and a graphitization template agent is introduced to reduce the graphitization temperature of the carbon fiber paper and improve the graphitization degree of the resin carbon. By optimizing the formula of the resin impregnation solution, the problem that asphalt and graphitization template agent are difficult to disperse and easy to settle in the phenolic resin impregnation solution is solved, and the asphalt, phenolic resin and graphitization template agent are loaded on the carbon paper base paper by a one-step impregnation method. The method has the advantages of simple process, low graphitization temperature and low energy consumption, and the prepared carbon fiber paper has good conductivity.
Owner:LINENG NEW ENERGY TECH (BEIJING) CO LTD

Cigarette paper and aerosol-generating product

The invention relates to the technical field of cigarettes, and discloses cigarette paper and an aerosol generating matrix product. The cigarette paper is used for wrapping an aerosol generating substrate, accelerant particles are arranged on one side, in contact with the aerosol generating substrate, of the cigarette paper, and the accelerant particles comprise an SAPO 34 molecular sieve and a metal compound loaded on the SAPO 34 molecular sieve. The cigarette paper aerosol generating substrate can effectively reduce the smoke moisture content of a heated cigarette.
Owner:CHINA TOBACCO ZHEJIANG IND CO LTD

Paper pulp, paper pulp board, preparation method and application

The invention discloses paper pulp, a paper pulp board, a preparation method and application. The paper pulp provided by the invention comprises the following components in parts by weight: 15-50 parts of wood pulp, 10-30 parts of recycled paper pulp, 10-40 parts of barley straw fibers, 2.5-40 parts of vinasse fibers, 3-8 parts of a negative oxygen ion exciting agent, 0.5-8 parts of an adhesive, 0.5-4 parts of a sizing agent and 0-1 part of an additive. According to the provided paper pulp, waste of the wine making industry chain is fully utilized, barley straw fibers, vinasse fibers, wood pulp, recycled paper pulp, the negative oxygen ion exciting agent and the like are combined, the obtained paper pulp fiber is high in strength, and a carton finished product is high in compressive strength and free of peculiar smell. The paper pulp for preparing cartons with excellent performance is provided while the recycling of wastes of a wine brewing industry chain is realized.
Owner:CHINA RESOURCES SNOW BREWERIES CO LTD

Epoxy impregnated aramid fiber composite paper treatment method based on non-thermal atmosphere plasma

The invention relates to the technical field of material surface treatment, and discloses an epoxy impregnated aramid fiber composite paper treatment method based on non-thermal atmospheric plasmas, aramid fiber composite paper, a heterocyclic aramid fiber solution, an epoxy resin prepolymer, a curing agent and a solvent are prepared, after the aramid fiber composite paper is subjected to surface cleaning, non-thermal atmospheric plasma treatment is carried out, and the surface of the aramid fiber composite paper is dried to obtain the epoxy impregnated aramid fiber composite paper. The preparation method comprises the following steps: preparing a heterocyclic aramid solution, putting aramid composite paper into the heterocyclic aramid solution, carrying out primary impregnation, carrying out drying and curing after impregnation, preparing an epoxy resin prepolymer, putting the aramid composite paper into the epoxy resin prepolymer, carrying out secondary impregnation, removing excess resin after impregnation, and preparing the aramid composite paper with the excess resin removed, according to the method, the non-thermal atmosphere plasma treatment technology and the step-by-step impregnation technology are combined, the synergistic effect of heterocyclic aramid and epoxy resin can be fully exerted, and therefore the interface adhesive force between fibers is improved.
Owner:SHAANXI SHENGSHI CHENYANG TECH DEV 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

Ultrathin thermal insulation material and preparation method thereof

The invention belongs to the field of new materials, and relates to an ultrathin thermal insulation material and a preparation method thereof. Aiming at main problems of existing aerogel heat insulation products and actual requirements of related fields on efficient heat insulation products, in combination with functional characteristics of nano-porous silicon, natural plant fibers are taken as carriers, SiO2 aerogel, nano-porous silicon and other functional materials are uniformly mixed with the plant fibers, and the composite material is prepared. And an environment-friendly and degradable new product with heat preservation and heat insulation functions is obtained through a papermaking process. The heat conductivity coefficient of the obtained ultrathin heat preservation and insulation material is smaller than or equal to 0.025 W / (m.K), and a convenient method is provided for large-scale and continuous production of the low-cost ultrathin heat preservation and insulation material. The method is easy and flexible to operate, high in operability and easy to industrially popularize and apply.
Owner:LINYI SANHE BIOMASS TECH CO LTD

Raw material composition of enhanced surface sizing agent for corrugated paper and preparation method of raw material composition

The invention provides a raw material composition of an enhanced surface sizing agent for corrugated paper. The raw material composition comprises the following components in parts by weight: 2-10 parts of starch, 0.01-4 parts of amylase, 0.01-3 parts of carboxymethylcellulose and 5-30 parts of sodium sulfate. The invention also provides a preparation method of the enhanced surface sizing agent for corrugated paper, which adopts the raw material composition and specifically comprises the following steps: adding starch into a reactor, heating to a reaction temperature, and adding amylase for gelatinization reaction; after gelatinization is finished, reducing the temperature to room temperature, adding carboxymethyl cellulose, and stirring to fully mix the carboxymethyl cellulose and the carboxymethyl cellulose; adding sodium sulfate into the reactor, and fully stirring and reacting to obtain the enhanced surface sizing agent for the corrugated paper. The surface sizing agent is prepared by gelatinizing and modifying starch and adding carboxymethyl cellulose and sodium sulfate, and the surface strength of paper can be remarkably improved when the product is applied to corrugated paper. The preparation method is simple and obvious in effect.
Owner:SHANGHAI DONGSHENG NEW MATERIALS

Double anti-mite fruit cultivating bag paper and preparation method thereof

The invention relates to the technical field of agricultural paper, in particular to double anti-mite fruit cultivating bag paper and a preparation method thereof. The preparation method comprises the following steps: pulping: respectively pulping natural-color bamboo pulp and natural-color softwood pulp, then mixing, adding water, and uniformly mixing to obtain pulp; papermaking: sequentially adding iron oxide yellow, aluminum sulfate, rosin size and a wet strength agent into the pulp, adding water for dilution, and drying after papermaking to obtain fruit cultivating bag body paper; sizing: taking oxidized cassava starch, adding water, preparing starch slurry, heating, continuously stirring until the starch is completely gelatinized, taking starch gelatinized liquid, adding neem oil, putting into a high-speed homogenizing emulsifying machine, emulsifying to obtain neem oil anti-mite emulsion, uniformly mixing the neem oil anti-mite emulsion with wax emulsion to obtain anti-mite glue liquid, immersing the fruit cultivating bag body paper into the anti-mite glue liquid, and drying to obtain the fruit cultivating bag. And taking out and drying to obtain the double anti-mite fruit cultivating bag paper. The composite material has physical barrier and long-acting anti-mite functions, and the risk of insect attack invasion is greatly reduced.
Owner:QINGDAO JIEZHONG NEW MATERIAL TECHNOLOGY CO LTD

Method for producing a sound-absorbing panel

Method for producing of a sound-absorbing panel (F), comprising a step of preparing a predetermined amount of cellulose fibres and a step of immersing the cellulose fibres in a first water basin (100) to form a cellulose pulp (P1). The method then comprises a step of preparing a predetermined amount of textile fibres (V) and a step of mixing, in water, the cellulose pulp (P1) with the textile fibres (V) to obtain a final pulp (P3) and a step of depositing the final pulp (P3) on a forming mould (300). The method then comprises a step of pressing at least the final pulp (P3) in order to cause an at least partial removal of the water contained in the final pulp (P3) making a fibre mat (T) and a step of drying the fibre mat (T) so as to cause evaporation of the water remained in the fibre mat (T) making a sound-absorbing panel (F).
Owner:IMPACT ACOUSTIC AG

Degradable waterproof and oilproof paper pulp molded product and preparation method thereof

PendingCN119824732AWaste product additionPaper/cardboardPolymer sciencePulp fibre
The invention discloses a degradable waterproof and oilproof paper pulp molded product and a preparation method thereof. The preparation method comprises the following steps: S1, pretreatment of polyhydroxybutyrate; s2, preparing modified starch; s3, coating the polyhydroxybutyrate with the modified starch; s4, preparation of modified montmorillonite; and S5, preparing the paper pulp molded product. According to the paper pulp molded product, the degradable oleophobic and hydrophobic high polymer material polyhydroxybutyrate is introduced, the degradability of the paper pulp molded product is guaranteed, the waterproof and oil-proof performance of the paper pulp molded product is improved, the polyhydroxybutyrate is coated with the modified starch, the compatibility of the polyhydroxybutyrate and paper pulp fibers is improved, and the paper pulp molded product has the advantages of being environmentally friendly and free of pollution. The overall quality of a paper pulp molded product is ensured; meanwhile, the added modified montmorillonite and the modified starch coated polyhydroxybutyrate can synergistically improve the barrier property of a paper pulp molded product, and the waterproof and oil-proof properties of the paper pulp molded product are jointly improved.
Owner:DONGGUAN POLYTECHNIC

Preparation process of collection paper literature deacidification test paper

The invention discloses a preparation technology of collection paper literature deacidification test paper, and belongs to the technical field of papermaking engineering. The method comprises the following steps: firstly, determining physicochemical indexes of the deacidification test paper according to ontology characteristics of precious ancient books and recent modern paper literatures, then taking saponified rosin size as an internal sizing agent, taking talcum powder as a filler, taking cationic polyacrylamide (CPAM) as a retention aid, and finally, carrying out papermaking and drying to obtain the deacidification test paper. The performance of the product prepared by the process is basically consistent with that of recent modern literature paper, the product has the capability of replacing a paper literature body to carry out lossy testing, and a more reliable, more comprehensive and more economical basis can be provided for constructing a deacidification effect evaluation system.
Owner:NANJING FORESTRY UNIV

Modified gypsum, preparation method thereof and application of modified gypsum in corrugated base paper production

The invention relates to the technical field of papermaking, in particular to modified gypsum, a preparation method of the modified gypsum and application of the modified gypsum in corrugated base paper production. According to the invention, the stabilizer is added to modify the gypsum, so that the obtained modified gypsum not only has the advantage of crystal morphology, but also has obviously reduced solubility in water, and can be stable for a long time. When the modified gypsum is used for preparing corrugated base paper, the papermaking cost can be remarkably reduced under the condition that the mechanical property of paper is met.
Owner:CHENGDU WINTRUE HLDG CO LTD

Corrugated high-flame-retardant heat-conducting ceramic fiber paper and preparation method thereof

The invention discloses corrugated high-flame-retardant heat-conducting ceramic fiber paper and a preparation method thereof, and relates to the technical field of ceramic fiber paper.The preparation method comprises the following steps that 1, raw materials are prepared through a wet method; 2, preparing ceramic fiber paper; 3, forming a corrugated structure; 4, sintering and heat conduction treatment; 5, post-treatment; the corrugated structure is formed by the following steps: 1, dipping; 2, drying; and 3, forming the corrugated structure. The epoxy resin impregnation liquid is used for impregnating the fiber paper, and can effectively permeate into the ceramic fiber paper to be combined with the fiber surface to form a firm three-dimensional network structure in the impregnation process, so that the bonding force between fibers and the overall strength of the paperboard are remarkably improved; the ceramic fiber paper is immersed in a suspension composed of silica sol and high-thermal-conductivity inorganic filler aluminum oxide in the final preparation stage, so that the fiber paper has good stability and low flammability at high temperature, the forming quality of the corrugated structure is improved, and the flame-retardant and heat-insulating performance of the material is further improved.
Owner:NANTONG YUANSHUN REFRACTORY FIBRE CO LTD

Odor control pulp composition

The present technology relates to fluff pulp having improved odor control and methods of making such fluff pulp. A fluff pulp is provided that includes bleached kraft fibers and a copper ion content of from about 0.2 ppm to about 50 ppm by weight of the bleached kraft fibers. The bleached kraft fibers include a length-weighted average fiber length of at least about 2 mm, a copper number of less than about 7, a carboxyl content of greater than about 3.5 meq / 100 grams; an ISO brightness of at least 80; and a viscosity of from about 2 cps to about 9 cps.
Owner:GCF USA HOLDINGS LLC

Preparation method of nanocellulose / SiC / MXene-CoFeC composite electromagnetic shielding paper

The invention discloses a preparation method of nano cellulose / SiC / MXene-CoFeC composite electromagnetic shielding paper, and belongs to the technical field of preparation of flexible and ultrathin electromagnetic shielding composite materials. The method comprises the following steps: preparing an MXene solution; preparing CoFeC powder; siC particle surface treatment; and 4, preparing the functional paper. The ultrathin paper-based composite material with a multi-element composite flexible structure is constructed by taking flexible paper made by nano cellulose as an element and respectively loading FeCo-C magnetic particles derived from MOF, SiC nano particles loaded with surface positive charges and an MXene layer. The MXene layer is tightly combined with the cellulose through a hydrogen bond, and the positive charges loaded on the surfaces of the SiC particles can be electrostatically combined with the MXene and the nanocellulose. The introduction of the magnetic material and the SiC particles and the two-dimensional MXene realize the establishment of a multi-layer structure to promote the electromagnetic wave reflection to generate an absorption-reflection-reabsorption process, so that the electromagnetic attenuation can be effectively enhanced.
Owner:NORTHEAST FORESTRY UNIV

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