132results 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 PHA (polyhydroxyalkanoate), PBAT (poly (butyleneadipate-co-terephthalate)) and PVOH (polyvinyl alcohol) blended water-based emulsion and application thereof in a paper-based barrier coating. The emulsion is prepared by performing melt blending on PHA and PBAT at 150-170 DEG C and then dispersing the mixture into a PVOH aqueous solution at 80-95 DEG C, and a plasticizer, a cross-linking agent and a surfactant can be added to improve the performance. And after coating paper, drying at the temperature of 80-150 DEG C to form the barrier film with the Cobb value of 10-15g / m and the Kit greater than or equal to grade 10. Compared with a traditional PE film or fluorine-containing coating, the system is more environmentally friendly and recyclable; pVOH is dissolved in pulping water, PHA and PBAT are easy to separate, and fibers are efficiently recycled; in compost, soil and marine environments, PHA and PBAT have wide biodegradability and are superior to PLA which is difficult to recycle and re-slurry and needs industrial compost. The method is suitable for 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 relates to the field of manufacturing of carbon fiber paper, in particular to a continuous preparation method and device suitable for continuous carbon fiber paper. The method comprises the following steps: preliminarily dispersing different types of carbon fibers in a device, further mixing and dissociating under the action of a dispersing agent, diluting, dispersing and homogenizing to obtain stable carbon fiber slurry. Then, in a designed continuous production device, a resin net is adopted as a receiving carrier, a carbon fiber paper wet green body is formed from the slurry under the vacuum adsorption effect, and continuous carbon fiber raw paper is obtained through specific step treatment and drying. And finally, performing carbonization treatment under different conditions to obtain a final carbon fiber paper product.

The invention relates to a method for applying starch to a paper or paperboard web, the method comprising the steps of: providing an aqueous suspension comprising starch particles and at least 1 wt %, based on the dry solid content of the suspension, of an amphiphilic polymer, creating a foam of the aqueous suspension, and applying the foam to the paper or paperboard web. The invention further relates to a paper or paper board product obtained by the method.

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 discloses a preparation method of special eye protection paper, which comprises the following steps: taking nano titanium dioxide and nano zinc oxide, mixing, adding propylene glycol, feeding into an ultrasonic disperser, dispersing to obtain a solution 1, taking acrylic resin, adding a polyurethane solvent, and uniformly stirring until the acrylic resin is completely dissolved to obtain a solution 2. The transparent and uniform coating is used, so that the original white and texture of the paper are kept, the visual experience of a user can be effectively improved, and a designer can enjoy clear paper texture and is not interfered by a light yellow ground color in daily drawing and design, so that the working efficiency and creation inspiration are improved; the raw materials such as propylene glycol, polyvinylpyrrolidone and the like adopted by the invention are non-toxic and harmless environment-friendly materials, do not contain harmful substances, have no adverse effect on human health and accord with the green and environment-friendly trend, and design workers do not need to worry about the release of the harmful substances in the use process.

There is provided a technology capable of controlling the occurrence of “migration” of a foam material to a contact object.The present technology provides a package material containing: a fibrous material that includes waste paper and / or pulp; a binder; sodium hydrogen carbonate; a surfactant; and a water-soluble softener, the water-soluble softener being a urea derivative having a chemical structural formula of R1,R2—N—CO—N—R3,R4 (R1 to R4 are each H or a saturated and / or unsaturated hydrocarbon group having 1 to 4 carbon atoms) and / or a water-soluble polyhydric alcohol having 3 to 15 carbon atoms, the number of carbon atoms and the number of hydroxyl (OH) groups in a molecular structure of the water-soluble polyhydric alcohol satisfying a relationship of the number of hydroxy groups<the number of carbon atoms.

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 present invention discloses an aqueous release coating, which comprises the following components by mass percentage: paraffin emulsion 30-40%, palm wax emulsion 30-40%, polyethylene wax emulsion 15-30%, release force regulator 1-3%, surfactant 1-3%, and aqueous polymer resin 1-3%. The present invention also discloses a preparation method of the aqueous release coating and its application in thermal transfer labels. The aqueous release coating disclosed by the present invention has no ink residue on the surface of the paper after release, and the aqueous release coating does not add organic solvents, has no VOC emissions, is environmentally friendly, has low cost, and the raw materials are friendly to the human body, and can be applied to the fields where human contact is possible.

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.

An aqueous dispersion comprising a nonionic surfactant (A), an anionic surfactant (B), and a wax (C) dispersed in water, wherein the wax (C) comprises an ester compound having a fatty acid-derived structural moiety and an aliphatic alcohol-derived structural moiety, and the content of the nonionic surfactant (A) is 40 to 99 parts by mass based on 100 parts by mass of the total of the nonionic surfactant (A), the anionic surfactant (B), and the wax (C), and is 5 to 50 parts by mass based on 100 parts by mass of the total of the nonionic surfactant (A), the anionic surfactant (B), the wax (C), and the water.

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