144results about "Filter paper" patented technology

The invention discloses a preparation method and application of a cationized composite paper-based material for filtering nano plastic, and belongs to the technical field of nano cellulose. The preparation method comprises the following steps: preparing cationized lignocellulose nanofibers through DES treatment, dissolving out lignin through DES treatment, fully mixing the lignin with a silane coupling agent KH-560 to obtain silanized lignocellulose nanofibers, and then loading a layer of nano lignocellulose material on the surface of a polyvinylidene fluoride filter membrane by adopting a vacuum suction filtration method, and finally, cross-linking polyethyleneimine to obtain the cationized composite paper-based material. The cationized composite paper-based material prepared by the invention is green and environment-friendly, has excellent hydrophilic, antibacterial and recycling performances, and has broad-spectrum effects on the size, concentration and type of carboxylated nano-plastics in efficient capture. The cationized composite paper-based material has the advantages that the carboxylated polystyrene nano-plastic filtering efficiency reaches 97.56%, the filtering flux reaches 1889.99 L.m <-2 >. H <-1 >. Bar <-1 >, the practical application performance of lignocellulose is further widened, and the cationized composite paper-based material has a good application prospect.

The invention discloses a paper composite filter material for reducing hydrocyanic acid and crotonaldehyde and a preparation method and application thereof, and the preparation method comprises the following steps: adding a gelator into a solvent to form a gelator solution; transferring the gelator solution into a liquid storage tank of an intaglio printing device, and printing and coating the gelator solution in the liquid storage tank onto a paper base material by using an anilox roller; the coated paper base material is conveyed to a low-temperature tunnel, so that nanofibers of a three-dimensional network structure are formed inside and on the surface of the paper base material in a self-assembly mode; and transferring the paper base material subjected to low-temperature treatment to a drying cylinder, and drying to obtain the paper composite filter material. According to the prepared paper composite filter material, the specific surface area in contact with smoke can be increased, the paper composite filter material can make full contact with the smoke in the process that the smoke passes through a filter stick, the interception capacity of the paper filter stick on hydrocyanic acid and crotonaldehyde in mainstream smoke of cigarettes is improved through amino and carboxyl groups on the surfaces of the nanofibers, and the sensory quality of the cigarettes with the paper filter stick is improved.

The invention discloses a method for preparing multifunctional oil-water separation paper through ZIF-67 in-situ growth on the surface of polydopamine coated fiber, and belongs to the technical field of preparation of fiber materials and composite materials thereof. The problems existing in an existing oil-water separation material preparation technology are solved. The method comprises the following steps: filter paper surface pretreatment; growing the MOF particles; and hydrophobic treatment. The product provided by the invention has self-cleaning and organic oil separation performances; the polydopamine and the silane with amino have rich amino, so that the polydopamine and the silane with amino have very high positive charge density during protonation, bacteria with negative charges can be attracted through electrostatic interaction, and the polydopamine and the ZIF-67 particles have a synergistic effect, so that the polydopamine and the ZIF-67 particles have an excellent inhibition effect on staphylococcus aureus. Oriented growth and controllability of MOF particles are achieved through loading of polydopamine on the surfaces of the fibers, and the super-hydrophobic paper is obtained; the method is simple, the process is easy to control, the cost is low, pollution is avoided, the oil-water separation performance is excellent, and the oil-water separation and antibacterial performance is achieved while the economic value of the filter paper is improved.

The invention discloses high-flux filter paper for water filtration and a preparation method thereof. The method comprises the following steps: by taking natural silkworm cocoons as a silk fibroin fiber raw material, preparing silk fibroin fibers through a synergistic effect of solvent dissolution and mechanical stripping; the silk fibroin fibers and the polyester long and short fibers form an interwoven network structure through a physical entanglement and electrostatic assembly technology; the silk fibroin fiber / polyester long fiber / polyester short fiber high-flux water filtering filter paper is prepared from polyester long and short fibers serving as a filtering framework and silk fibroin fibers through a wet papermaking process. The silk fibroin fiber / polyester long fiber / polyester short fiber high-flux water filtration filter paper obtained by the invention has high flux and high toughness through bionic cobweb multistage structural design, effectively filters water pollutants such as fine particulate matters and micro-nano plastic particulate matters, and is suitable for high-precision filtration in severe environments such as a cooling water system and radioactive wastewater treatment.

The invention belongs to the technical field of drug-loaded release, and particularly relates to a Co-MOFs modified carboxymethylated filter paper composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: performing carboxymethylation treatment on filter paper to obtain carboxymethylated filter paper; soaking the carboxymethylated filter paper in a cobalt ion solution; and then adding an organic ligand solution to obtain the Co-MOFs modified carboxymethylated filter paper composite material. The preparation method has the advantages of mild reaction conditions and simplicity in operation; the Co-MOFs modified drug-loaded paper has good antibacterial performance and drug slow release performance, can be used as a medical dressing for promoting wound healing, and has important application value.

This invention relates to the field of vacuum cleaner technology, specifically to a simple dust collector, comprising a vacuum cleaner body and a suction tube. The vacuum cleaner body includes a collection shell and a main body shell connected in sequence. One end of the suction tube has a brush suction tube communicating with it, and the other end of the suction tube communicates with the collection shell. The collection shell and the main body shell are interconnected. The main body shell houses a cyclone mechanism, a battery pack, and a PCB control board. The cyclone mechanism is located inside the main body shell at the end where the main body shell connects to the collection shell. The PCB control board is located on one side of the battery pack, and both the cyclone mechanism and the PCB control board are electrically connected to the battery pack. The collection shell houses a filter mechanism. This simple dust collector is a small dust collector suitable for both home and vehicle use, meeting people's needs for vacuuming narrow crevices in vehicles, desktops, keyboards, etc. Its compact design makes it easy to carry and store; users can hold it directly on the outside of the main body without needing a separate handle.

The present invention relates to a preparation method for a bamboo fiber for filter paper, filter paper containing the bamboo fiber, and a preparation method for the filter paper. The preparation method for a bamboo fiber for filter paper of the present invention comprises the following steps: (1) material selection: selecting bamboo; (2) chemical treatment: using a chemical agent to perform chemical treatment on the bamboo selected in step (1); (3) defibering: defibering the material obtained by means of the chemical treatment in step (2), to obtain coarse pulp; and (4) screening: screening the coarse pulp obtained in step (3) to obtain the bamboo fiber. The bamboo fiber prepared in the present invention has the mechanical property of a high elastic modulus, and the air filter paper manufactured using the bamboo fiber has the properties of high air permeability, high stiffness and high bulk.

The present application relates to a kind of glass fiber filter paper and its preparation method and application.The glass fiber filter paper includes at least three layers of glass fiber layers, and the glass fiber layers between layer and layer are gradient arrangement;Three layers of the outer layer of the glass fiber layer is combined with non-woven fabric layer.The method includes: according to the proportion, at least three kinds of glass fiber, dispersing agent and water are uniformly mixed, and at least three kinds of glass fiber slurry are obtained;At least three kinds of glass fiber slurry are formed on the non-woven fabric laid on the paper forming net, and the glass fiber paper film is formed, is pressed and is initially dried, and at least three layers of dry paper film are obtained;At least three layers of paper film are released at the same speed, at the same time, the non-woven fabric on at least one middle layer paper film is removed, then at least three layers of paper film are glued and combined, and adhesive curing is carried out.The technical problem to be solved is how to make the thickness of glass fiber filter paper less than 0.5mm, the filter material quality less than 110g / m 2 , the breaking strength is higher than 210kPa, while the pollution capacity is higher than 160g / m 2 , and the filtering precision is better than β (10 μm) greater than 300.

This invention relates to a paper filter material, its preparation method, and its application. The preparation method of the paper filter material includes the following steps: S1. Preparing flash-dried pulp, mercerized pulp, cylinder-dried pulp, and water into a slurry; S2. Applying internal sizing to the slurry obtained in step S1, followed by molding, dewatering, and drying to obtain a base paper; S3. Applying surface sizing to the base paper obtained in step S2 using starch, followed by drying to obtain the paper filter material. The paper filter material obtained by this preparation method maintains good air permeability and high bulk. When used as a filter element, it forms a paper filter rod with low suction resistance and good suction resistance stability, which can replace current cellulose acetate filter rods, balancing production cost, environmental protection, and suction experience.

The invention discloses a method for preparing coffee filter paper by taking coffee grounds as filler, and belongs to the technical field of papermaking. The preparation method comprises the following steps: drying, crushing and sieving coffee grounds, and carrying out ultrasonic dispersion on sieved powder to prepare coffee grounds suspension; the method comprises the following steps: defibering wood pulp, mixing the defibering wood pulp with a wet strength agent solution, a retention and drainage aid and a coffee residue suspension, and then carrying out papermaking, squeezing, drying and water balance treatment to obtain the coffee filter paper. The waste coffee grounds are used as the functional filler, so that the efficient utilization of wastes is realized, the phenomena of resource waste and environmental pollution are reduced, the process is simple, and the preparation cost is low.

The invention relates to the technical field of filtering materials, and mainly relates to an air filtering material and a preparation method thereof. The invention relates to an air filtering material, which comprises the following components: 60-70 parts by weight of wood pulp fiber; 10 to 20 parts by weight of a modified PAN nanofiber; 1-3 parts by weight of a modified PTFE emulsion; 5 to 10 parts by weight of modified PLA; 0.1 to 1 part by weight of chitosan; and 0.01 to 0.1 part by weight of sodium polyacrylate. The preparation method of the air filtering material comprises the following steps: soaking wood pulp fibers in water, and pulping; mixing the pulped wood pulp fibers, the modified PAN nanofibers, the modified PTFE emulsion, the modified PLA, chitosan and sodium polyacrylate to obtain mixed paper pulp; carrying out papermaking by utilizing the mixed paper pulp; and drying and calendering to obtain the air filtering material. The air filtering material provided by the invention also has the effects of high moisture resistance and strong antibacterial property while ensuring high filtering performance.

The invention provides a nanocellulose styrene composite emulsion and application thereof in air filter paper, and relates to the technical field of functional paper preparation. According to the method, a nanocellulose solution is introduced into an oil phase containing styrene to be emulsified, the high-stability nanocellulose styrene composite emulsion is prepared, and the stability of the nanocellulose styrene composite emulsion is improved from two aspects: firstly, nanocellulose forms a compact covering layer on the surface of a liquid drop, so that demulsification fusion is prevented; and 2, a complex three-dimensional network structure in which fibers and liquid drops are mutually crosslinked is constructed by regulating and controlling the volume ratio of a water phase to an oil phase. After the emulsion is coated on the surface of the filtering base paper and is dried, styrene is subjected to in-situ polymerization in the drying process to form polystyrene microspheres, and firm bonding is generated between fibers and nano cellulose, so that the bonding force between a coating layer and the base paper is remarkably enhanced. The dry / wet tensile strength and bursting strength of the air filter paper prepared by the method are remarkably improved, and the overall stability is excellent.

The utility model discloses a multi-folding-edge filter element which comprises a filter element whole body, the filter element whole body is provided with a plurality of folding assemblies, the plurality of folding assemblies are formed by folding filter paper, the filter paper is circumferentially surrounded and fixed to form the filter element after being folded, each folding assembly comprises a first folding surface which is folded from outside to the center, and the first folding surfaces are symmetrically arranged; two symmetrical first V-shaped surfaces are folded towards the center of the filter element between the outer ends of the first folding surfaces, a second V-shaped surface is folded towards the outer side of the filter element in the middle of the inner end of each first folding surface, the depths of the first V-shaped surfaces and the second V-shaped surfaces are the same, the folding assemblies form the whole filter element, the contact surface of the whole filter element is 1.5 times more than that of a traditional filter element, and the filtering effect is enhanced.

The application relates to the field of deep filtration, in particular to an activated carbon deep filtration paperboard, a preparation method and a decoloring process using the same. The activated carbon deep filtration paperboard comprises a paperboard main body, one side of the paperboard main body is a liquid inlet surface, the other side of the paperboard main body is a liquid outlet surface, the paperboard main body comprises fibers, activated carbon particles and a binder; the activated carbon content of the paperboard main body is increased along the thickness direction of the paperboard main body from the liquid inlet surface to the liquid outlet surface; the total activated carbon content X of the paperboard main body is 45-80%; the paperboard main body is equally divided into a first region, a second region and a third region along the thickness direction from the liquid inlet surface to the liquid outlet surface; the difference between the wet weight of the paperboard main body after being completely wetted by pure water and the dry weight of the paperboard main body is M 差 ; the ratio Y of the M 差 to the wet weight M 湿 of the paperboard after being completely wetted by pure water is 30-80%; and the X / Y is 0.6-2. The activated carbon deep filtration paperboard has the advantages of improving the utilization rate of activated carbon particles and improving the adsorption effect and adsorption efficiency of the activated carbon deep filtration paperboard on impurities such as pigments in raw medicinal materials and synthetic drugs.

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 non-woven fabric (10) suitable as a lid of a capsule for preparing a beverage, in particular coffee or tea, the non-woven fabric (10) comprising a tear enhancement layer (20), an oxygen barrier layer (24), a retention filter layer (30), wherein the oxygen barrier layer (24) is arranged between the tear enhancement layer (20) and the retention filter layer (30), the non-woven fabric (10) further comprising at least one of a first adhesion layer (22), a second adhesion layer (26) and a water vapor barrier layer (28), wherein the first adhesion layer (22) is arranged between the tear enhancement layer (20) and the oxygen barrier layer (24), wherein the second adhesion layer (26) is arranged between the oxygen barrier layer (24) and the retention filter layer (30), wherein the water vapor barrier layer (28) is arranged between the oxygen barrier layer (24) and the retention filter layer (30). The present invention further relates to a lid for or of a capsule for preparing a beverage as well as to a capsule for preparing a beverage.

An embodiment relates to a filter material for coalescing a dispersed phase in a continuous phase. The filter material has binder fibers and irregular rayon fibers distributed among the binder fibers. The filter material does not include a non-fibrous resin. An embodiment relates to a filter assembly. The filter assembly has a particle filtration layer, a coalescing layer downstream of the particle filtration layer, and a growth medium downstream of the coalescing layer. The coalescing layer is bonded to the particle filtration layer. The growth medium has irregular rayon fibers and binder fibers distributed among the irregular rayon fibers. The growth medium does not include a non-fibrous resin.

An object of the present disclosure is to provide a filter medium for an air filter which does not contain a PFAS nor a siloxane compound and has a good physical property balance among the PF value, the water repellency, and the strength. A filter medium for an air filter according to the present disclosure is a filter medium for an air filter composed of a wet-laid nonwoven fabric, wherein the filter medium for an air filter contains a binder resin and a water repellent, the water repellent contains, as a main component, a hydrocarbon-based polymer free of fluorine and silicon in a molecule thereof, and the binder resin and the water repellent are crosslinked by an isocyanate crosslinking component.

The utility model discloses filter paper with a honeycomb structure, which relates to the technical field of filter paper and comprises a filter paper body, first filter holes are formed in the upper surface of the filter paper body, second filter holes are formed in the lower surface of the filter paper body, and the filter paper body comprises a first filter paper layer. A honeycomb group is adhered to the bottom of the first filter paper layer, and a second filter paper layer is adhered to the bottom end of the honeycomb group. According to the utility model, through the arrangement of the first filter paper layer, the second filter paper layer, the honeycomb core and the like, the first filter holes in the first filter paper layer can perform coarse filtration operation on liquid, and the liquid enters the honeycomb core and then passes through the second filter holes in the second filter paper layer to finish fine filtration work on the liquid, so that people do not need to finish coarse filtration and fine filtration work step by step; the time is effectively saved, the working efficiency is improved, and meanwhile, the strength of the filter paper is effectively enhanced due to the arrangement of the honeycomb structure.

The invention belongs to the technical field of water treatment and functional materials, and discloses a high-flow scale-inhibiting and antibacterial filtering material as well as a preparation method and application thereof. The large-flow scale-inhibiting and antibacterial filtering material is an integrated multi-layer composite filtering material, the first layer is a crude fiber layer, the second layer is a scale-inhibiting layer, the third layer is an antibacterial and active carbon layer, and the fourth layer is a supporting layer. The raw material of the scale inhibition layer is phosphonic acid cellulose, and the antibacterial component in the third layer and the fourth layer is quaternary ammonium salt cellulose. The unique layered structure of the filtering material ensures high filtering precision, realizes large flux of 6-8 L / min (0.1 m < 2 >), and can be directly used in a filtering process to play multiple effects. Within the service life of 5-10 tons of water flow, the residual chlorine removal rate of the material is larger than or equal to 90%, the antibacterial rate to escherichia coli and staphylococcus reaches 99% or above, and the scale inhibition rate reaches 95-99%. And the preparation process is simple, low in cost, environment-friendly and easy for large-scale production.

The invention relates to the technical field of cigarette filter stick paper, in particular to paper filter stick paper for cigarettes and a preparation method thereof, and the paper filter stick paper comprises the following raw materials in parts by weight: 250-300 parts of water, 35-40 parts of a first base material, 30-35 parts of a second base material, 6-8 parts of glycerol, 2-3 parts of triethyl citrate, 8-12 parts of aluminum hydroxide, 2-4 parts of citric acid and 8-12 parts of an additive. According to the invention, the corn starch selectively oxidized by sodium periodate is used as a first base material, and the bamboo pulp fiber subjected to fine treatment is used as a second base material, so that the traditional cellulose acetate is completely replaced, the biodegradation rate of the filter stick in the environment is obviously accelerated, and the pollution problem caused by material inertia is fundamentally solved.

The invention relates to the technical field of air filtration, in particular to bio-based flame-retardant air filter paper and a preparation method thereof. The bio-based flame-retardant air filter paper comprises: base paper; the flame-retardant adhesive layer is compounded on the surface of the base paper; the base paper is prepared from raw materials including poly (p-phenylene benzobisoxazole) fibers, broadleaf wood fibers and coniferous wood fibers; the flame-retardant adhesive layer is prepared from a flame-retardant adhesive solution; the flame-retardant glue solution comprises styrene-butadiene latex, a flame retardant, carboxymethyl cellulose, a lubricant, potassium zirconium carbonate and water; the flame retardant is prepared from raw materials including a phytic acid solution and anhydrous calcium chloride. According to the flame-retardant adhesive layer provided by the invention, specific flame retardants phytic acid and anhydrous calcium chloride are adopted and matched with other specific components, so that good interaction can be realized, the flame retardance of the flame-retardant adhesive layer can be effectively improved, and the obtained filter paper is relatively large in dust holding capacity, relatively excellent in filtering performance and bursting resistance and relatively long in service life; no halogen hydride gas is generated during combustion, so that the environment-friendly effect is achieved.

This invention discloses a high-efficiency disinfection air filter paper and its preparation method, relating to the field of filter material technology. The invention first utilizes ethylene (chloromethyl)dimethoxysilane to modify nano-titanium dioxide, N-(2,3-epoxypropyl)phthalamide, and chitosan to generate an antibacterial agent. This agent is then copolymerized with N-hydroxymethylacrylamide and acrylamide to form an antibacterial emulsion. A multi-layer polyvinylidene fluoride nanofiber composite membrane is then prepared by combining a scaffolded polyvinylidene fluoride fiber membrane with an ultra-fine polyvinylidene fluoride fiber membrane, achieving a low-resistivity filter paper. Finally, the antibacterial emulsion is sprayed onto the surface, promoting the fixation of the modified titanium dioxide onto the substrate surface and improving the filter paper's burst resistance. The filter paper prepared by this invention exhibits antibacterial, burst-resistant, and low-resistivity properties.

The invention discloses high-precision cationized lyocell fiber water filter paper and a preparation method thereof. Lyocell chopped fibers are used as raw materials, cationized Lyocell chopped fibers are prepared through solvent treatment, and then the cationized Lyocell micro-nano fibers are prepared through mechanical treatment. Cationized lyocell micro-nano fibers / cationized lyocell chopped fibers are obtained through a wet forming process to form an interlaced network structure; the cationized lyocell micro-nano fiber / cationized lyocell chopped fiber high-precision water filtration filter paper is prepared through a wet papermaking process. The cationized lyocell micro-nano fiber / cationized lyocell chopped fiber high-precision water filtration filter paper obtained by the invention has high precision, high flux and high toughness through multi-scale structural design, and can effectively filter water pollutants such as submicron particles and micro-nano plastic particles; the filter is suitable for high-precision filtration in the fields of food industry, electric power industry, water supply industry, biological medicine industry and the like.

This disclosure describes filtration media that are preferably glass-free or substantially glass-free. In some embodiments, the filtration media preferably exhibit filtration capacity and efficiency equal to or greater than similar glass-containing filtration media. The filtration media include bicomponent fibers, filtration efficiency fibers (e.g., PET fibers), and microfibrillated fibers. The filtration efficiency fibers include fibers having a fiber diameter in the range of 1 micron to 5 microns, and fibers having a fiber diameter of at least 0.1 micron and less than 1 micron.

The utility model provides a filter paper structure with good chromatography performance, which relates to the field of detection reagent consumables, and comprises a filter paper mechanism, the filter paper mechanism comprises strip-shaped filter paper, a filtrate line prefabricating groove and a paper anti-falling block, and an anti-inclination mechanism is arranged on the outer wall of the filter paper mechanism. The anti-inclination mechanism comprises a paper stabilizing shell, a hollow groove, a paper L-shaped supporting plate and a paper extending plate, a stabilizing assembly is arranged at the top of the anti-inclination mechanism, and the stabilizing assembly comprises a single-sided adhesive, an isolating membrane and an extending sheet. The bottom of the paper stabilizing shell is in contact with the top of the test tube, the strip-shaped filter paper is supported by the paper L-shaped supporting plate, the top of the test tube is plugged by the plug, then the paper extension plate and the paper L-shaped supporting plate are stabilized, and the strip-shaped filter paper is supported by the paper L-shaped supporting plate, so that additional supporting points are prevented from being provided for the strip-shaped filter paper; the strip-shaped filter paper cannot incline and bend after being placed, so that the chromatography performance is improved.

The invention discloses carboxylic butadiene-styrene latex for automobile filter element paper, and relates to the technical field of preparation of butadiene-styrene latex for automobile filter element paper. The styrene-butadiene latex comprises the following raw materials in percentage by mass: 22%-25% of butadiene, 15%-20% of styrene, 2%-3% of methacrylic acid, 1%-2% of monomethyl itaconate, 0.5%-1% of maleic anhydride, 0.5%-1% of fumaric acid, 0.6%-0.9% of N-hydroxyethyl acrylamide, 0.3%-0.5% of diacetone acrylamide, 1.2%-1.8% of a compound emulsifier, 0.2%-0.4% of an initiator, 0.5%-1% of modified nano silicon dioxide and the balance of deionized water. When the carboxylic butadiene-styrene latex disclosed by the invention is applied to preparation of automobile filter element paper, the wear resistance and the filtering efficiency of an automobile filter element can be remarkably improved, the interface bonding energy of the latex and fibers is improved, and the water absorption rate is reduced.

The present disclosure provides a home-compostable and heat-sealable cellulosic nonwoven, methods for manufacturing the same, and an article including the same. The cellulosic nonwoven includes: a first ply including first fibers and a heat-sealable binder, wherein the heat-sealable binder includes a non-fibrous biodegradable polymer; a second ply including second fibers and a sizing agent, wherein the sizing agent is hydrophobic, wherein the first fibers and the second fibers each independently include cellulosic fibers, and wherein the second ply is disposed on the first ply.

A filter element is disclosed made from a gathered paper web that may be crimped, embossed, and / or corrugated. In accordance with the present disclosure, the paper web is treated with at least two different additives. The first additive comprises amphiphilic molecules, having hydrophilic and hydrophobic ends such as a ketene dimer that has one or more branching groups. The second additive, on the other hand, may comprise a polymer component such as a polyalkylene glycol. The filter element may also be treated with a polyamine or an amino acid or salt thereof. In one embodiment, the filter element may be incorporated into the filter of a smoking article. The two additives together may improve smoke taste, reduce some smoke phenols, and reduce some smoke carbonyls.

The invention discloses high-dust-holding-capacity filter paper as well as a preparation method and application thereof, and belongs to the technical field of filtration. According to the high-dust-holding-capacity filter paper provided by the invention, the fibers on the inflow surface and the cationic water repellent agent are stirred and reacted together with the fibers in a pulp tank, and the surface layer can resist water after the raw paper is dried, so that resin cannot permeate the fibers on the surface layer during single-side sizing, the accurate distribution of the resin can be effectively improved, and the dust holding capacity and the water resistance of the filter paper are improved; the resin impregnation can provide physical properties for the filter paper; wherein the resin is obtained by heating, curing and molding bisphenol A epoxy resin and polyether amine D230 acrylate microspheres, and a certain high crosslinking strength and pore structure is provided for the filter material by constructing a multi-stage energy dissipation mechanism. The fiber on the surface layer of the filter paper is subjected to controllable water-resistant modification so as to accurately control the distribution of resin, and meanwhile, the resin solution is subjected to collaborative optimization, so that the high dust holding capacity, high water resistance and high strength which cannot be achieved by traditional filter paper are realized.