41 results about "Retention agent" patented technology

The invention belongs to the technical field of soil improvement, and particularly relates to a sandy soil functional water and fertilizer retention agent and a preparation method and application thereof.The preparation method specifically comprises the following steps that 1, modified bentonite, humic acid nano-microspheres and amino acid chelated microelement powder are mixed and stirred; 2, adding sodium alginate-cellulose composite gel and a magnesium ammonium phosphate-urea compound, and stirring to obtain a primary product, and 3, putting the primary product into a granulator, and granulating to obtain the sandy soil functional water and fertilizer retention agent. Through the synergistic effect of multiple components, the performance bottleneck of a single material is broken through, the components have the advantages of being all natural and degradable, the process is simplified, the cost is reduced, and compared with the prior art, the prepared retention agent has remarkable progress in water and fertilizer retention efficiency, environmental compatibility and comprehensive functions.

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.

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 invention discloses a stabilizer for a transparent PVC (Polyvinyl Chloride) product with good gamma-ray irradiation resistance. Comprising the following components in parts by weight: 10-20 parts of benzoic acid organic calcium salt, 10-20 parts of benzoic acid organic zinc salt, 10-20 parts of benzoic acid organic magnesium salt, 10-20 parts of benzoic acid organic aluminum salt, 20-30 parts of hydrotalcite, 5-10 parts of borate, 3-10 parts of a pyrimidine auxiliary color retention agent, 3-10 parts of a hindered amine light stabilizer and 5-10 parts of a thioester antioxidant. The hindered amine light stabilizer is a light stabilizer with a hindered amine methyl piperidine structure. The transparent PVC product added with the stabilizer has excellent gamma-ray irradiation resistance, and after the irradiation dose is 25kGy, the yellowness index YI of the transparent PVC product is less than 5.0, which indicates that the transparent PVC product added with the stabilizer does not change color in later application and storage processes after gamma-ray irradiation; the transparency is kept well, the light transmittance after irradiation is greater than 85%, and the transparency requirements of medical and food packaging are met; the mechanical property is well maintained, and the tensile strength retention rate after irradiation is greater than 90%.

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 purpose of the present invention is to provide a novel means capable of enhancing and / or maintaining the effect of an active ingredient for a long period of time. Provided is a retention agent for retaining an active ingredient, the retention agent comprising an oil-in-water emulsion containing water, a hydrophobic substance, a cyclodextrin, and a polysaccharide tackifier.

The present invention provides a polyether compound and a preparation method thereof and an application in a slump-preventing agent, so as to overcome the limitations of the prior art 6C polyether macromonomer having high reaction activity and the need to polymerize under a low temperature environment. The polyether compound has a structure shown in Formula I: wherein R1 is selected from: H or CH3, R2 is selected from: C2H4 or C3H6, and R3 is selected from: a polyether chain obtained by ring-opening polymerization of ethylene oxide and / or propylene oxide. The polyether compound is used to design and synthesize a water-retaining and slurry-raising concrete slump-preventing agent, which can achieve long-term slump-preserving without loss for 4 hours, and the process does not have the phenomenon of water seepage and delayed return, has the function of water-retaining and slurry-raising, and has good workability.

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.

A composition for oral administration of gamma aminobutyric acid (GABA), the composition comprising: GABA; at least one retention agent configured to increase retention of the composition, and the GABA contained in the composition, in the stomach for an extended period of time; and at least one slow release agent configured to allow extended release of the GABA from the composition. Additional embodiments of the composition, it method of administration and its use are disclosed herein.

The application provides an acid anhydride low-sensitivity polycarboxylic acid water reducing agent and a preparation method and application thereof, an intermediate is prepared by alcoholysis of maleic anhydride and ring-opening polymerization of maleic acid monoester and ethylene oxide, the carboxyl in the maleic acid ester is esterified by ethylene oxide, a part of carboxylic acid is protected, crosslinking of the main chain is prevented, and then the polymer quality is improved to prevent the generation of later-stage precipitation; and the esterification protects the carboxyl, further improves the slump flow retention performance, makes the slump flow retention agent content lower in the application process of the water reducing agent, and the effect is more obvious. Compared with the prior art, the isopentenyl alcohol polyoxyethylene ether is copolymerized with maleic anhydride and a functional monomer of the maleic anhydride to synthesize a high-conversion-rate low-sensitivity viscosity-reducing mother liquor, the solid content of the base liquid and the catalyst dosage are adjusted, so that the application can occur the polymerization reaction at normal temperature, and the energy consumption is low at normal temperature. The intermediate after functionalization of the maleic anhydride is used to participate in the free radical polymerization reaction, and the monomer conversion rate of the reaction product is generally higher than 80%.

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

The invention relates to the technical field of oral soluble film products, and discloses an oral soluble film and a preparation method thereof. The water content of the oral soluble film is larger than 5%, the tensile strength of the oral soluble film is not smaller than 10 MPa, the oral soluble film comprises a film forming material, an active substance, a first water locking agent and a second water locking agent, and the first water locking agent and the second water locking agent are synergists. The oral soluble film is high in moisture content, the loading capacity of active ingredients can be improved, the oral soluble film is high in dissolution speed in the mouth and fresh and cool in taste, the first water locking agent and the second water locking agent can form a three-dimensional network structure, and the toughness of the nicotine oral soluble film can be improved.

The invention relates to the field of papermaking, and particularly provides a retention method of a nano titanium dioxide filler based on a paper-based facing material. The retention method comprises the following steps: S100, mixing nano titanium dioxide with dopamine under an alkaline condition, so as to obtain titanium dioxide coated with polydopamine; s200, mixing the titanium dioxide coated with the polydopamine with the cationic guar gum containing the boron group, so as to obtain a composite retention aid; and S300, adding the composite retention aid into the paper pulp, and carrying out wet end retention treatment and net forming treatment to obtain the paper-based facing material. The efficient retention aid is prepared by polymerizing and coating the nano titanium dioxide with dopamine under the alkaline condition and compounding with the cationic guar gum containing the boron group, so that the retention aid rate and dispersity of the nano titanium dioxide at the wet end are improved, and the performance of the paper-based facing material is improved; and on the other hand, the retention aid dosage is reduced, the process is mild and environment-friendly, and the adaptability of subsequent procedures is considered.

The application discloses a preparation method of waterproof and oil-proof base paper for coated paper, and belongs to the technical field of coated paper. The base paper raw material comprises pulp and pulp preparation additives. The pulp preparation additives comprise retention aids, filter aids, in-pulp sizing agents, in-pulp reinforcing agents, system process additives and fluorescence eliminating agents. The in-pulp sizing agents comprise rosin size and aluminum sulfate. The rosin size is anionic. The aluminum sulfate is added to a batching pool, and the rosin size is added to a flow feeding position. The application can quickly and stably control the paper fluorescence value to be less than or equal to 0.1%, and can meet the safety of food paper containers. The paper edge penetration stability is stably controlled to be less than or equal to 3 mm (10 min in 95 DEG C hot water), and the water resistance and stability of subsequent processing into a drinking cup, a face bowl and the like are improved.

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.

The invention provides an additive capable of prolonging the airing time of cement-based ceramic tile glue and a preparation method thereof, and the preparation method comprises the following steps: pretreatment of animal glue: dissolving an alkaline substance in water to form an alkaline solution, heating, adding the animal glue into the alkaline solution, stirring, cooling to room temperature, titrating with diluted hydrochloric acid until the mixture is weakly acidic, and standing for 24 hours; a hydrolyzed animal glue solution is obtained; preparing a mixed solution, namely adding a slump retaining agent into the hydrolyzed animal glue solution, and uniformly stirring to obtain the mixed solution; preparing powder: pouring the mixed solution on a tray, drying for a certain time under a certain temperature condition, taking out to obtain a solid mixture, crushing, grinding, sieving, and uniformly mixing with an inhibitor and an anti-caking agent to obtain a finished product. The additive provided by the invention can effectively prolong the airing bonding strength of the cement-based ceramic tile adhesive, and has no influence on slippage of ceramic tiles, the raw material components and the preparation process are relatively simple, and no harmful substances are generated in the whole preparation process.

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 discloses a composition of superplasticizer and workability retention agent (100) for increasing the workability of limestone calcined clay cement binder for concrete and mortar. The composition includes sulphonated naphthalene formaldehyde (104) ranging from 5 to 70%, sodium hexametaphosphate (106) ranging from 5 to 70%, sodium carbonate ranging from 0.1 to 15% and sodium silicate (meta) nonahydrate ranging from 0 to 85% proportion by weight. The weight ratio of sodium hexametaphosphate to sodium carbonate is in the range 4.5 to 5. The superplasticizer is added in a dosage range of 0.05 to 5% of weight of the limestone calcined clay cement binder. The workability loss is reduced to less than 8% for water to binder ratios 0.35 and 0.40 on adding the superplasticizer.

The invention provides an efficient multi-element retention and drainage aid process for papermaking and a retention and drainage aid. The multi-element retention and drainage aid is prepared from a ternary retention aid, silica sol, adipic dialdehyde modified polyamide resin, adipic dialdehyde cationic polyacrylamide, positive starch and positive polyacrylamide. The ternary retention aid is negative polyacrylamide. By accurately controlling the adding position of the retention aid, fine fibers and filler are successfully and effectively captured and retained in the early stage of paper material formation, the retention rate is remarkably increased, and the dehydration speed of the paper material in a net part is increased. According to the precise adding strategy provided by the invention, the retention and drainage effect is qualitatively improved, and then the forming quality and the production efficiency of the paper sheet are improved.

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.

The application discloses an on-line dissolving device for adding retention aid, which comprises a rack, a fluid conveying pipeline connected with an external water source, a feeding bin mounted on the rack, a mixing assembly comprising a mixing bin mounted on the rack, a water inlet pipeline and a water outlet pipeline both communicating with the mixing bin, the water inlet pipeline and the water outlet pipeline both communicating with the fluid conveying pipeline, the mixing bin communicating with an output end of the feeding bin, and an incident water flow of the water inlet pipeline being substantially tangent to an inner wall of the mixing bin. The application forms spiral turbulent flow in the mixing bin through the tangent incident water flow, forcibly disperses retention aid particles by centrifugal force and makes the particles roll along the wall, and fundamentally destroys the formation condition of colloidal particles. Compared with a traditional stirring mode, the dynamic shear force is more uniform and continuous, and the caking problem caused by excessively high local concentration is avoided. The synergistic design of the conical mixing bin and the spiral guide piece further optimizes the water flow path, fully disturbs the particles in a small space, and significantly increases the dissolving contact area.

The present invention relates to an anti-foaming additive composition comprising water, at least one anti-foaming agent, at least one surfactant and at least one retentive agent; the present invention relates also to method for abating foam formation by using said anti-foaming additive composition in a papermaking process.