22 results about "Retention agent" patented technology

The application discloses a multi-carboxyl copolymer aqueous composition for pulp adding in packaging paperboard, synergism in short-stay pulp of packaging paper and fiber synergism in wet end of bamboo pulp paper, and a preparation and application method thereof, and belongs to the technical field of pulp and paper chemicals and wet end chemical control. The composition contains carboxyl-rich copolymer, and can be selected as high filtration rate homogeneous aqueous solution type, flexible type acid or bamboo pulp low cation density copolymer according to paper types, and is prepared through water phase free radical polymerization. In application, the composition is diluted and then added in a divided mode after a fan pump outlet to a pressure screen inlet or after a cationic polyacrylamide retention agent or in a bamboo pulp system. The method is beneficial to improving fiber combination, drainage stability, first-pass retention rate, white water stability and paper strength, and improving the adaptability of wet end dosing windows of different paper types.

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.

The utility model discloses a papermaking retention aid filtering and storing integrated device. The device comprises a storage barrel, the filter screen is arranged in the storage barrel and is in a drum shape, the lower end of the filter screen is clamped with the inner bottom surface of the storage barrel, and the upper end surface of the filter screen is closed; the outlet pipe is arranged on the outer side face of the storage barrel and communicated with the interior of the storage barrel, and the outlet pipe is fixedly connected with the outer side face of the storage barrel; the inlet pipe is arranged above the outlet pipe, one end of the inlet pipe penetrates through the outer side face of the storage barrel and then is fixedly connected with the filter screen, the inlet pipe is communicated with the interior of the filter screen, and the inlet pipe is fixedly connected with the outer side face of the storage barrel; the rotating motor is arranged in the storage barrel and below the filter screen, and the rotating motor is fixedly connected with the storage barrel; the stirring rod is arranged in the filter screen, and the lower end of the stirring rod penetrates through the inner bottom surface of the storage barrel and then is fixedly connected with a rotating shaft of the rotating motor. The papermaking retention aid storage device has the advantages that the stored papermaking retention aid is not easy to solidify, and impurities in the papermaking retention aid can be removed.

The invention discloses a pulp mixing method for improving fiber interlacing force, which comprises the following steps: increasing fiber brooming rate (greater than or equal to 35%) through stepped pulping, optimizing parameters of a mixer and a headbox to enhance pulp uniformity, moving a cationic polyacrylamide retention aid forwards to an inlet of the mixer, prolonging reaction time to 12s, and compounding with polyvinyl alcohol and quaternary ammonium salt auxiliaries. And meanwhile, a linkage control relation (the pressure is + 0.01 MPa when the network speed is increased by 50m / min) between the network speed and the pulp outlet pressure is established, and three-level monitoring of safety, early warning and abnormity is realized in combination with more than one hundred thousand parameter databases. According to the scheme, fiber agglomeration and forming instability are effectively reduced, the paper breaking rate is remarkably reduced, and the raw paper strength and the production stability are improved.

The present disclosure generally relates to aqueous cationic polyacrylamide (CPAM) dispersions, methods of preparation and methods of use thereof, particularly in the paper industry. For example, these CPAM dispersions may be used in any of the following: (i) sticky control in paper manufacturing (ii) fixing in paper manufacturing, (ii) sludge dewatering, and / or (iii) oil-water separation. Moreover, the present disclosure generally pertains to CPAM dispersions, wherein such CPAM dispersions are aqueous dispersions which are shelf stable at room temperature, methods of preparation and methods of use thereof in papermaking applications and in products such as paper-based products. The disclosed CPAM dispersions may be used as retention aids in papermaking processes, may increase retention of starch to a formed paper web and / or board web, and may provide increased dry strength to paper-based products.

The invention discloses a method for preparing iron oxide red by using iron-containing electroplating waste acid liquid, and belongs to the technical field of electroplating waste liquid, the method comprises the following steps: 1, adding an iron source into acidic iron-containing electroplating waste liquid; then impurity removal treatment is carried out to remove interfering ions, and a high-content ferrous solution is obtained; step 2, diluting the high-content ferrous solution, adding an alkaline precipitator for neutralization, and adding a particle size retention agent which is a hyperbranched surfactant; introducing air to obtain precursor slurry; step 3, carrying out filter pressing and washing on the precursor slurry, and removing chloride ions and sodium ions to obtain a filter cake; dispersing the filter cake in water, adding a seed crystal, and roasting by adopting segmented temperature control to obtain iron oxide red; soluble sulfide and permanganate are compounded to remove impurities, a hyperbranched surfactant is used as a particle size retention agent, crystal nucleus agglomeration is inhibited through a steric hindrance effect, heterogeneous nucleation sites are provided, and crystal growth is guided in combination with segmented temperature control.

The present invention relates to the use of a non-anionic functionalized polymer in pulp and paper industry as retention aids.

The present invention relates to a thermal runaway prevention material and a method for producing same and, more specifically, to: a thermal runaway prevention material characterized by comprising a bio-soluble ceramic fiber (BSF), an aramid fiber, diatomaceous earth, a sizing agent, and a retention agent; and a method for producing same.

The utility model discloses a flavor retention agent mixing treatment mechanism which comprises a mixing main body, a plurality of groups of stirring blades are rotatably arranged in the mixing main body, a flip structure is arranged on one side of the top of the mixing main body, a box cover is arranged on one side of the flip structure, and a pressing assembly is arranged on the box cover in a penetrating manner. A material pressing plate is arranged on the side, close to the material mixing main body, of the material pressing assembly, a plurality of outer material jacking ends and inner material jacking ends which are distributed in a staggered mode are arranged at the bottom of the material mixing main body, and a plurality of drying assemblies are arranged on the peripheral side of the material mixing main body in an embedded mode and used for mixing and processing raw materials in different states; and the multiple sets of stirring blades are located on the inner side of the material pressing plate, the material pressing assembly comprises a driving end arranged on the box cover in a penetrating mode, the telescopic end of the driving end extends to the middle of the material mixing body, and the driving end is fixedly connected with the material pressing plate. The flavor retention agent mixing treatment mechanism can be used for mixing raw materials in different states, and is high in mixing speed and mixing sufficiency.

The application discloses a preparation process of a calendered paper with improved calendering firmness, and belongs to the papermaking technical field.The technical scheme is as follows: including pulp plate, chain plate conveying, pulper, unloading pool, defibrator, grinding machine, pulp forming pool, pulp forming pool pump, pre-coating pool, pre-coating pool pump, off-machine white water tank, flushing pulp pump, pressure screen, headbox, net part, pressing part, Yankee dryer, film transfer sizing machine, 1800 dryer, calender, winding part, rewinding, packaging and warehousing;100% bleached kraft pulp is used, the beating degree of the pulp forming is controlled to be 30-35SR, the adding amount of chemical reagents, such as talcum powder, sizing agent AKD, cationic corn starch and retention aid, a new surface sizing agent is added, and the moisture of the paper is controlled, so that the synergistic effect between various factors and conditions is achieved, the paper sheet and the PE film are more closely combined, and the problem of poor calendering in the production process of the calendered paper is solved.

The present application relates to the technical field of strengthening retention aid, and discloses a preparation method of high-efficiency strengthening retention aid containing nanocellulose and application thereof in papermaking, which comprises the following steps: step one: nanocellulose raw materials are added into water for pretreatment, then a modification reagent is added for first modification treatment, so that a modified nanocellulose solution is obtained; step two: starch raw materials and a starch degradation reagent are added into the modified nanocellulose solution for second modification treatment, so that a modified nanocellulose starch solution is obtained; step three: a cationic reagent and a catalyst are added into the modified nanocellulose starch solution for third modification treatment, so that a cationic modification solution is obtained; and step four: a neutralizing reagent, a strengthening agent and a bactericide are added into the cationic modification solution, so that the strengthening retention aid is obtained. Through cationization of nanocellulose and starch, the present application effectively improves the reaction efficiency of cations, and obtains a more stable liquid product, so that the application effect is improved.

The invention belongs to the technical field of paper packing materials, and discloses a paper packing material strengthening process which comprises the following steps: taking ultra-thin corrugated paper of which the quantitation is less than or equal to 80g / m as a raw material; the method comprises the following steps: physical ultrasonic activation or chemical oxidation activation of fibers, fine screening of fibers, compounding and adding of an environment-friendly reinforcing agent, additional addition of a retention aid, control of corrugated forming parameters, preparation of a double-sided differentiated coating, addition of a specific auxiliary agent, low-temperature hot air curing and infrared curing or microwave curing, and recovery of waste heat of steam tail gas in the curing process. A wear-resistant additive is added into an outer surface coating, surface tension is controlled to guarantee printability, finally, the advantage of light weight is kept, meanwhile, ring crush strength is improved by more than or equal to 30%, edge crush strength is improved by more than or equal to 25%, the environmental protection index reaches the standard, and the purchase cost can be reduced by more than 25%. The method adapts to existing equipment and multiple application scenes, and industrialization can be rapidly achieved.

The present invention discloses a kind of through-hole polypropylene foamed beads with high through-hole retention rate and its molded parts.The foamed beads contain hollow through-holes throughout the foamed beads.The core layer material of the foamed beads contains a certain amount of through-hole structure retention agent, which can make polypropylene crystals grow rapidly at a higher temperature, accelerate the transition of polypropylene from melt form to solid semi-crystalline state, and thus solidify the structure form of the through-holes inside the filaments; at the same time, the core layer material also contains a synergistic aid, which can absorb a large amount of heat during the extrusion process, further solidifying the through-hole structure of the particles. During the extrusion process of the particles, even if the water temperature for cooling the filaments is slightly higher or the cutting knife for cutting the filaments is slightly dull, the polypropylene particles can still maintain a relatively high through-hole rate, and the corresponding foamed beads have a relatively short production cycle during molding, especially a relatively short water cooling cycle, greatly improving the production efficiency.

A soft food thickener is disclosed as including a gel-forming and water-binding agent, a starchy polysaccharide, a high-temperature solidification and shape retention agent, and a viscosity stabilizing and shear-resistant thickening agent.

The invention relates to a coloring method for enabling the surface of an oak floor to be jade gray, which comprises the following steps of: coating a ferrous sulfate solution on the surface of the floor to form ferrous tannate with tannic acid before surface oil coating and painting processes in the floor processing process, and finally oxidizing the ferrous tannate into the iron tannate, then coating the surface of the floor with an oxidizing agent for oxidation treatment, bleaching with a bleaching agent and ion neutralization with a reducing agent in sequence, finally coating the surface of the floor with a water-based color retention agent for color retention treatment, and drying the floor for surface oiling and painting processes in the floor processing process. According to the principle that chemical substances permeate into the wood surface layer to generate chemical change reaction, after the color of the floor surface is changed for several times in the whole process, various products finally precipitate on the floor surface and are presented on the floor surface layer in a jade gray color, so that the color is the natural color grown on the floor wood surface and returns to nature.

To provide a new means capable of retaining an active ingredient in a plant tissue or a plant processed product and maintaining the effect exhibited by the active ingredient for a long time.SOLUTION: A retention agent used for retaining an active ingredient in a plant tissue or a plant processed product, comprising an oil-in-water emulsion containing water, a hydrophobic substance, cyclodextrin, and a polysaccharide thickener.SELECTED DRAWING: None

The invention discloses retention rate enhancing and low-temperature initiating polyacrylamide for papermaking, which is prepared from the following components in parts by weight: 85 to 95 parts of acrylamide, 15 to 20 parts of dimethyl diallyl ammonium chloride, 10 to 12 parts of acryloyloxyethyl trimethyl ammonium chloride, 2 to 5 parts of ammonium sulfate, 4 to 8 parts of adipic acid, 0.03 to 0.06 part of EDTA-5Na (Ethylene Diamine Tetraacetic Acid), 0.02 to 0.05 part of initiator VA-044 and 0.02 to 0.03 part of sodium hypophosphite. The cleaning agent is prepared from the following components in parts by weight: 0.02-0.03 part of ammonium persulfate, 0.02-0.03 part of ammonium ferrous sulfate and 372-380 parts of deionized water. The invention also provides a preparation method of the polyacrylamide and application of the polyacrylamide as a papermaking retention aid. Polyacrylamide polymerization reaction is carried out at low temperature, external heating is not needed, energy consumption is reduced, in addition, chain termination reaction is effectively inhibited by low temperature, high-activity free radical concentration is ensured by synergistic initiation of the initiator VA-044, and the product is high in molecular weight, narrow in distribution, high in bridging efficiency and not prone to excessive flocculation. And high retention efficiency and good paper sheet uniformity are achieved.

The invention discloses a high-water-retention low-shrinkage flexible light-weight kitchen and bath vertical leveling agent and a preparation method thereof. The high-water-retention low-shrinkage flexible light-weight kitchen and bath vertical leveling agent is prepared from 325-mesh heavy calcium carbonate, 40-70-mesh washed sand, 42.5 ordinary portland cement, 200-mesh stone powder, 40-70-mesh glass beads, rubber powder, wood fibers, 6MM polypropylene fibers, an anti-cracking agent, an anti-sagging agent and a thickening water-retaining agent according to a specific ratio. The preparation method comprises the following four mixing steps: firstly mixing the basic aggregate and the cementing material, then adding the functional additive, then mixing the vitrified microbeads, and finally adding water and stirring. The water retention rate of the leveling agent is larger than or equal to 99.0%, the 28d shrinkage rate is smaller than or equal to 0.04%, the dry density is 785-843 kg / m, the strength and the adhesive property reach the standard, the construction hand feeling is smooth, the lever lifting frequency is small, the wall surface is flat and fine, the leveling agent is suitable for the humid environment of kitchens and bathrooms, the preparation process is simple and controllable, and the leveling agent is suitable for large-scale production.

This disclosure relates to compositions for the delivery of fragrances. The composition comprises a substrate and a fragrance emulsion printed on the surface of the substrate and dried, wherein the fragrance emulsion comprises (i) a fragrance, (ii) a carrier comprising modified starch and disaccharides and / or disaccharide alcohols, and optionally (iii) a retention aid. This disclosure also relates to methods for producing such compositions. This disclosure also relates to consumer products or consumer packaging containing such compositions.

The invention relates to the technical field of papermaking, in particular to a water-in-oil emulsion type nano cross-linked copolymer papermaking retention aid and a preparation method thereof. The water-in-oil emulsion type nano cross-linked copolymer papermaking retention aid comprises the following components: a water phase, an oil phase and a phase inversion agent, the mass ratio of the water phase to the oil phase is (7.2-7.5): (2.5-2.8), and the water phase comprises the following components in parts by weight: 10-15 parts of a template polymer, 300-320 parts of acrylamide, 80-120 parts of a cationic monomer, 0.01-0.04 part of a structure regulator, 200-300 parts of water and 0.1-0.5 part of an initiator; the oil phase comprises the following components in parts by weight: 220-260 parts of white oil and 25-35 parts of an emulsifier; the molecular weight of the template polymer is 500,000-1,000,000, and the retention rate of the filler and the strength of finished paper can be remarkably improved.

The present invention relates to a ceramic paper and a method for preparing same, and more specifically, to a ceramic paper and a method for preparing same, the ceramic paper being characterized by comprising polycrystalline alumina fibers, a binder, a retention agent, a dispersing agent, and a thickening agent.

The invention discloses a biomass-based retention aid for papermaking and application of the biomass-based retention aid. The retention aid provided by the invention 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 biomass-based material in the retention aid adopts a wet process, the biomass-based material is obtained by obtaining a stable dispersion liquid, and the retention aid disclosed by the invention does not influence the water filtering efficiency of paper pulp while improving the retention rate of fine fibers and inorganic particles.