107results about "Surfactants addition" patented technology

The present invention discloses a water-based emulsion of PHA, PBAT and PVOH and its application in paper-based barrier coatings. This emulsion is prepared by first melt-blending PHA and PBAT at 150-170 °C and then dispersing them into an aqueous PVOH solution at 80-95 °C. Plasticizers, cross-linking agents and surfactants can be added to improve the performance. After coating on paper and drying at 80-150 °C, a barrier film with a Cobb value of 10-15 g / m² and a Kit ≥ 10 grade is formed. Compared with traditional PE film laminating or fluorine-containing coatings, this system is more environmentally friendly and recyclable; PVOH dissolves in pulping water, PHA and PBAT are easily separated, and fibers can be efficiently recovered; in composting, soil and marine environments, PHA and PBAT have extensive biodegradability and are superior to PLA which is difficult to recycle and requires industrial composting. It is applicable to food, industrial, special packaging and agricultural paper products.

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.

The invention discloses an acid-neutral nano PHA paperboard reinforcing agent as well as preparation and application thereof, and belongs to the technical field of papermaking chemicals. The reinforcing agent is a bio-based nano water-based emulsion, and the core of the reinforcing agent is that a stable high-positive-charge nanoparticle interface is constructed under an acid-neutral window through the synergistic effect of polyphenol and an amine polymer. The environment-friendly wet strength agent solves the potential safety hazard of the traditional wet strength agent, and does not contain free formaldehyde and epichlorohydrin. The method has the outstanding advantages that the method is completely compatible with a modern papermaking acid-neutral process, and the defect that the similar bio-based technology needs to react under alkalinity is overcome; the adhesive is flexible to apply, can be efficiently used for wet end addition, or can be stably compounded with oxidized starch for surface sizing; the preparation method is simple, efficient and energy-saving, can realize excellent wet strength retention rate and dry strength improvement under the conditions of low addition amount and conventional industrial drying at 105 DEG C, and does not need extra high-temperature curing.

The invention discloses a water-based environment-friendly coating and local printing transfer paper thereof, and particularly relates to the technical field of water-based environment-friendly coatings. The water-based environment-friendly coating is prepared from a water-based epoxy ester dispersion, an organic silicon modified polyvinyl butyral emulsion, a gas-phase method aluminum oxide nano dispersion, a fluorocarbon surfactant, a self-crosslinking polyether thickening agent and a propylene glycol methyl ether acetate-water azeotropic quick-drying auxiliary agent. According to the coating, through cooperation of specific components and process control, the drying speed is remarkably increased, the surface drying time is shortened, meanwhile, shrinkage cavities are eliminated, the hardness of the coating is enhanced, and the edge transfer precision is improved. Corona treatment is adopted for the corresponding local printing transfer paper, gravure precise coating, infrared pre-drying and gradient hot air drying are matched, and finally clear separation and transfer of a coating are achieved through infrared laser scanning. The whole system is a water-based formula, is environment-friendly and safe, is suitable for the field of high-end printing, and has the comprehensive advantages of high drying speed, high precision, strong adhesive force, simplified process and the like.

The invention firstly provides a structure of environment-friendly bottomless paper type thermo-sensitive paper. The structure comprises a base material, and a thermo-sensitive coating and a silicone oil layer which are sequentially laminated on one surface of the base material, the thermosensitive coating comprises a color developing layer, a pre-coating layer and a bottom coating layer which are laminated in sequence, and the bottom coating layer is laminated on one surface of the base material; secondly, a coating system is provided, and a color developing agent comprises 4, 4 '-sulfonyl diphenol; the invention also provides a preparation method which is used for preparing the thermo-sensitive paper by adopting the structure and the coating system, and comprises the following steps: coating the color developing layer on the surface of the pre-coating layer by using curtain coating; a novel structure is designed, a basis is provided for the self-curling release performance of the thermo-sensitive paper, a coating system uses 4, 4 '-sulfonyldiphenol, so that the color saturation, the light resistance and the stability of the thermo-sensitive paper can be improved, the thermo-sensitive paper does not react with silicone oil, the release performance is improved, a curtain coating method is adopted based on the structure and the coating system, and the self-curling release performance of the thermo-sensitive paper is improved. And the coating uniformity, color development and other properties of the thermo-sensitive paper are effectively improved, and the environment-friendly thermo-sensitive paper which is fast in reaction, bright in color and high in definition during printing is integrally formed.

The invention provides a preparation method of conductive electrolytic paper, which comprises the following steps: uniformly mixing paper pulp and a conductive polymer solution, and then preparing the electrolytic paper, the conductive polymer solution comprises the following components in percentage by mass: 1%-10% of a conductive polymer, 0.1%-5% of a surfactant, 0.1%-10% of a cross-linking agent, 1%-20% of a conductivity improver and the balance of water. According to the preparation method, the appropriate conductive polymer solution and the paper pulp are ingeniously used for mixed papermaking in the papermaking process of the electrolytic paper, the density, strength and toughness of the electrolytic paper are improved, conductivity is achieved on the basis that the physical characteristics of existing electrolytic paper are enhanced, the paper resistance value is reduced, and the service life of the electrolytic paper is prolonged. The problem that the performance of the capacitor is unstable due to the fact that the liquid absorption effect of existing electrolytic paper on the conductive polymer solution is different is effectively solved, and the subsequent preparation process of the solid electrolytic capacitor is simplified.

According to an example aspect of the present invention, there is provided a method comprising: in a mould, forming a multi-layered foamed fibrous structure from foamed fibrous compositions, wherein each of the foamed fibrous compositions comprises cellulosic fibres, water, air, and at least one foaming agent; dewatering the foamed fibrous structure; hot-pressing the dewatered structure, to obtain a moulded fibrous product, wherein said at least one foaming agent comprises at least one surface-active foaming agent and / or at least one polymeric foaming agent, and wherein at least one of the foamed fibrous compositions comprises a hydrophobic agent.

According to an example aspect of the present invention, there is provided a method comprising: in a mould, forming a multi-layered foamed fibrous structure from foamed fibrous compositions, wherein each of the foamed fibrous compositions comprises cellulosic fibres, water, air and a foaming agent; dewatering the foamed fibrous structure; hot-pressing the dewatered structure, to obtain a moulded multi-layered fibrous product, in which method at least two different foaming agents are applied, wherein said at least two different foaming agents are selected, independently from each other, from the group of surface-active foaming agents and polymeric foaming agents.

To provide a biomass water-soluble surfactant composition that imparts excellent wettability, permeability and takes care of solubility in water and an environmental issue, and an ink in which the composition is blended, and a paper coating agent.SOLUTION: A water-soluble surfactant composition has a biomass degree of 10% or more, comprising: (A) an acetylene glycol represented by the following formula (1): (wherein R1 and R2 each are an alkyl group having 1 to 5 carbon atoms) and / or an ethoxylated acetylene glycol represented by the following formula (2): (wherein R3 and R4 each are an alkyl group having 1 to 5 carbon atoms, m and n each are positive numbers of 0.5 to 25, and m+n is 1 to 40); and (B) at least one bio-derived polyoxyalkylene-added nonionic surfactant.SELECTED DRAWING: None

The invention relates to a method for manufacturing a fibrous web, such as web of paper, board, tissue or the like. The method comprises obtaining at least one fibre suspension of lignocellulosic and / or cellulosic fibres and feeding the fibre suspension into an intermediate residence entity, such as pulper, storage tower or broke tower. Fibre suspension, which comprises bacterial endospores, is discharged out of the intermediate residence entity via an outlet after a residence time of at least 2 hours in the intermediate residence entity and after a time delay the fibre suspension is formed into a fibrous web. Bacterial endospores are sensitised by adding a germinant surfactant, which comprises a primary or secondary ammonium head group and a linear unsubstituted C12-alkyl tail, to the fibre suspension at an addition point, which is located at the lower part of the intermediate residence entity or after the outlet of the intermediate residence entity, but before the formation of the fibrous web.

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.

The application discloses a kind of light and thin solvent-free silicone oil release paper manufacturing process, belong to release paper manufacturing technical field, package following steps: paper selection, primer, drying primer, spraying release agent, scanning and scraping release layer, flatten release layer, drying release layer, water recovery, release paper winding, select low, thin base paper of grammage, then lower coating dry weight is used to primer to base paper is carried out primer and drying is formed to form film layer to obtain intermediate paper, when spraying release agent, atomizer will release agent atomization into particle and be sprayed to the surface of film layer of intermediate paper, let release agent particle be evenly attached to the surface of film layer of intermediate paper, then through scraper and two flatten rollers destroy the surface tension of release agent particle, let all release agent particles be fused together, the particle size of release agent particle after atomization is smaller, can reduce the thickness of release layer, then release layer is dried, water recovery is obtained after getting light and thin release paper of low grammage, low thickness.

Provided is toilet paper which is excellent in thickness feeling and water disintegrability, has sufficient softness, gives a sense of security for human bodies during use, and is environmentally friendly. Toilet paper has three or four plies. The basis weight is 12.5 to 15.5 g / m2 per ply. 80 to 100 mass% of fiber is softwood kraft pulp that is subjected to oxygen pulping and is not bleached with chlorine. The toilet paper contains a cationic fatty acid amide-based softener, and has a paper thickness of 120 to 150 µm per ply, a paper thickness of 400 to 600 µm as a whole of the toilet paper, and a water disintegrability of 10 seconds or less.

The utility model relates to the technical field of spraying machines, and discloses an automatic paper product surfactant spraying machine which comprises a supporting table, a supporting frame is fixedly connected to the upper surface of the supporting table, a fixing cover is fixedly connected to one side of the outer wall of the supporting frame, and a hydraulic cylinder is fixedly connected to one side of the outer wall of the fixing cover. A rack plate is fixedly connected to the output end of the hydraulic cylinder, a rotating shaft is rotationally connected to the interior of the supporting frame, a gear is fixedly connected to one side of the outer wall of the rotating shaft, the gear is in meshed connection with the rack plate, and a discharging disc is fixedly connected to one side of the outer wall of the rotating shaft. According to the paperboard clamping device, the handle is rotated, the lead screw drives the rotating block to move, and therefore paperboards with different thicknesses are fixed through the clamping assembly. And then, the hydraulic cylinder pushes the rack plate to slide in the fixing cover, the rack plate and the gear are meshed to rotate, the gear drives the rotating shaft and the discharging disc to rotate, overturning of the paperboard is achieved, and the double-face spraying effect is achieved. The operation improves the practicability of the device.

Title: Method for manufacturing an object based on cellulose fibers and object based on cellulose fibers thus manufactured The invention relates to a method for manufacturing an object based on cellulose fibers and an object based on cellulose fibers thus manufactured. The manufacturing method 10 is essentially such that it comprises the following steps: Mixing 12, with water, a dry matter comprising at least between 80 and 99%, preferably between 90 and 99%, of cellulose fibers and between 1 and 20%, preferably between 1 and 10%, of a water-soluble polymer, preferably natural, or of a water-retaining additive so as to obtain a pulp based on cellulose fibers at a concentration by weight of dry matter substantially between 10 and 70%, preferably between 20 and 50%, Without drying it, shaping the pulp 14 in a mold of the object to be manufactured, Drying 16, by thermocompression, the shaped pulp in the mold.Figure for abstract: Fig. 1.

The invention belongs to the technical field of carbon fiber surface treatment, and particularly relates to a carbon fiber surface treatment device, a chopped carbon fiber preparation system and a carbon fiber paper preparation method. In order to solve the problems of a fiber network structure, non-uniform pore distribution between fibers, random fiber overlapping points, adhesion between the fibers and the like, a discontinuous surface treatment mode is adopted, and a structure in which active site areas and non-active site areas appear periodically at intervals is formed on the surface of the carbon fiber; the chopped fibers are dispersed to prepare the carbon fiber paper, and due to the existence of the anionic surfactant, active sites on the chopped carbon fibers tend to gather towards surfactant groups more easily under the action of the double electric layer effect of particles; after dehydration and paper forming are completed, the active sites are in lap joint to form fiber connection points, and controllable lap joint of fibers at the active sites is achieved.

The invention belongs to the technical field of filter materials, and particularly relates to a preparation method of an aramid fiber filter material with controllable filter precision, which comprises the following steps: S1, dividing an aramid fiber precursor into three parts, and respectively processing the three parts into superfine nanofiber, medium-precision fiber and crude fiber; s2, mixing the following components to prepare a dispersion liquid system: deionized water, a nonionic surfactant, a cationic surfactant, a dispersing aid, a pH regulator and an organic cosolvent; s3, adding superfine nanofibers, medium-precision fibers and crude fibers in different mass ratios into the dispersion liquid system, and stirring until the materials are fully and uniformly mixed to obtain aramid fiber dispersion liquid with different filtering precisions; s4, performing vacuum filtration on the aramid fiber dispersion liquid to form a wet film; and after drying treatment, carrying out hot press molding by adopting a hot press process to finally obtain the aramid fiber filter material with controllable filter precision. According to the method, the filtering precision of the filter material can be accurately regulated and controlled, fiber agglomeration is effectively prevented, and the dispersion uniformity of fibers in a solution is improved.

The present invention relates to a material suitable for manufacturing hydrophobic cellulose-based light-weight products, such as foams and foam papers, comprising any type of cellulose pulp from either soft wood or hardwood, 2 to 10 wt.% of hydrophobic suspension (OAF) to pulp, 0.5 to 5wt% of Chitosan solution in organic acids to pulp, 3 to 10 wt.% of surfactants to the pulp. The invention also relates to a process of making said material and a use thereof.

The invention discloses a compound color fixing agent and a preparation method and application thereof, and belongs to the technical field of papermaking chemicals, the preparation method of the compound color fixing agent comprises the following steps: adding a bio-based polycation component into an acetic acid solution, heating and stirring to obtain a bio-based polycation stock solution; and adding amphiphilic polycyclodextrin and a surfactant into the bio-based polycation stock solution, and carrying out homogenization treatment to obtain the compound color fixing agent. The compound color fixing agent provided by the invention comprises bio-based polycations, amphiphilic polycyclodextrin and a surfactant, the amphiphilic polycyclodextrin with a hydrophobic cavity is connected with C3-C5 alkyl and quaternary ammonium salt groups, through a multi-component compounding design, by utilizing a synergistic effect of host-guest inclusion, electrostatic interaction and hydrophobic interaction, the color fixing agent has a good color fixing effect, and the color fixing agent has a good color fixing effect. And a coating with an interpenetrating network structure is constructed on the surface of the paper, so that fixation of the dye is realized.

The present invention relates to a material suitable for manufacturing hydrophobic cellulose-based light-weight products, such as foams and foam papers, comprisingany type of cellulose pulp from either soft wood or hardwood,2 to 10 wt. % of hydrophobic suspension (OAF) to pulp,0.5 to 5 wt % of Chitosan solution in organic acids to pulp, 3 to 10 wt. % of surfactants to the pulp. The invention also relates to a process of making said material and a use thereof.

To provide a method for efficiently removing a silicon compound contained in paper, and a removing agent.SOLUTION: The method for removing the silicon compound from the paper comprises a step of treating a raw material slurry containing the paper having a layer containing the silicon compound and water and having a solid content derived from the paper with a solvent containing a cationic surfactant.SELECTED DRAWING: None

The present invention provides certain paper enhancing compositions, typically aqueous compositions, for use in the manufacture and coating of paper, and paper products. The paper enhancing compositions provide certain paper processing advantages and distinct final paper product characteristics. The present invention further provides carbonate enhancing composition useful for preparing enhanced carbonate compositions used in the paper manufacturing processes.

The present invention provides composite fiber paper and a method for preparing the same. The method comprises: feeding polypropylene fibers into a fiber deflaker and adding water to deflake them to obtain polypropylene fiber slurry; feeding para-aramid fibers into the fiber deflaker containing the polypropylene fiber slurry and continuing to add water to deflake them to obtain composite fiber slurry; feeding a dispersant, a surfactant, an inorganic filler, and the composite fiber slurry into a pulping tank, adding water to mix them, and preparing a pulp; and sequentially wet-sheeting the pulp, dehydrating it by pressing, drying it, and hot-pressing it to obtain composite fiber paper. The para-aramid fibers used in the present invention are plasma-pretreated para-aramid fibers. The present invention can produce durable composite fiber paper with excellent antibacterial properties.

To provide a paper softener imparting an excellent touch to paper while causing slight paper strength reduction when added to pulp slurry, and paper containing the paper softener.SOLUTION: The paper softener includes: a compound having a carbon number in a specified range, i.e., at least one species selected from (a1) polyoxyalkylene monoalkyl (or alkenyl) amine and (a2) polyoxyalkylene monoalkyl (or alkenyl) propylenediamine, as a component (A); and a compound having a carbon number in a specified range, i.e., at least one species selected from (b1) polyoxyalkylene monoalkyl (or alkenyl) ether, (b2) polyoxyalkylene monoalkyl (or alkenyl) ester and (b3) polyoxyalkylene monoalkyl (or alkenyl) ether monoalkenyl ester, as a component (B).SELECTED DRAWING: None

The invention discloses a self-emulsifying bio-based polyester stabilized multi-class bio-based polymer water-based emulsion as well as a preparation method and application thereof, and belongs to the technical field of bio-based high polymer materials and water-based resin. According to the preparation method disclosed by the invention, a dual-interface synergistic stabilization mechanism is constructed by adopting the self-emulsifying bio-based polyester containing furandicarboxylic acid and the rosin-based component, so that efficient emulsification and interface compatibility of various hydrophobic bio-based film-forming polymers such as polyhydroxyalkanoate and polylactic acid are realized. The emulsion prepared by the invention has excellent storage stability and machining adaptability, maintains extremely high bio-based content and extremely low volatile organic compound residue while remarkably improving the water resistance, oil resistance and gas barrier property of a paper-based coating, and completely meets the safety standard of food contact-grade materials. According to the preparation process, the microstructure of dispersed phase particles is accurately regulated and controlled through phase inversion and high-pressure homogenization, and an ideal green coating solution is provided for high-performance environment-friendly paper-based packaging.

The present invention relates to a release agent composition for papermaking, an emulsion, a preparation method and a use method thereof. The release agent emulsion of the present invention comprises (a) a hydrophobic material; (b) a cationic surfactant, comprising a quaternary ammonium salt type surfactant; and (c) a nonionic surfactant, comprising a polyoxyethylene type nonionic surfactant, wherein the emulsion is free of anionic surfactants, and wherein the emulsion has a particle size of about 0.05-1 μm. The release agent emulsion manufactured according to the method of the present invention has a small particle size, a narrow particle size distribution, and good stability, and thereby has significant application meanings in the papermaking process, especially in the production of crepe paper.

The present invention provides certain paper enhancing compositions, typically aqueous compositions, for use in the manufacture and coating of paper, and paper products. The paper enhancing compositions provide certain paper processing advantages and distinct final paper product characteristics. The present invention further provides carbonate enhancing composition useful for preparing enhanced carbonate compositions used in the paper manufacturing processes.

The present invention relates to a method for producing a solid cellulose foam. The method includes depositing a first wet cellulose foam to obtain a first wet foam deposit, followed by providing score lines at least partially through the height of the first wet foam deposit to form pillars of wet cellulose foam. During drying of the first wet foam deposit, gaps are formed along the score lines, separating the pillars. In a subsequent deposition step, a second wet cellulose foam is deposited to obtain a subsequent wet foam deposit that fills the gaps between the pillars. After drying, a solid cellulose foam is obtained that includes the pillars of the first solid foam deposit and the subsequent solid cellulose foam deposit that fills the gaps between the pillars.