184results about How to "Strong water absorption" patented technology

The invention relates to the technical field of concrete preparation, in particular to fiber-reinforced building solid waste recycled aggregate concrete and a preparation method thereof.The preparation method comprises the following preparation steps that S1, recycled coarse aggregate, slag, fly ash and river sand are mixed and stirred according to the proportion, and a cement mixture is obtained; s2, calcining the cement mixture for 2-3 hours to obtain cement clinker; s3, cement clinker, modified fibers, modified graphene oxide and tetrasodium iminodisuccinate are mixed according to the proportion and then poured into a stirrer to be stirred for 5-6 min; and S4, adding water into the stirrer according to the proportion, continuously stirring for 6-10 minutes, and taking out to obtain the fiber-reinforced building solid waste recycled aggregate concrete. According to the invention, the polystyrene fiber and the concrete are connected more tightly by using the modified fiber, and the polystyrene fiber can be subjected to multiple reactions with components in the concrete in an alkaline environment of the concrete to form a stable network structure, so that mechanical indexes such as crack resistance and breaking strength of the concrete are improved.

The invention belongs to the technical field of pipeline cleaning, and particularly relates to a dynamic wall pipeline with a cleaning structure, which comprises an arc-shaped shovel plate, a connecting spring is fixedly mounted on the back surface of the arc-shaped shovel plate, a bag body is fixedly mounted on one side, far away from the arc-shaped shovel plate, of the connecting spring, and a step end is arranged in the middle of the inner arc surface of the bag body. The ends, away from the arc-shaped shovel plates, of the connecting springs are fixedly installed on the surface of the step end. An arc-shaped groove is formed in the side, close to the step end, of the inner arc face of the bag. The arc-shaped shoveling plate usually has certain hardness and sharpness, stubborn dirt and sediments on the inner wall of a pipeline can be powerfully scraped off, hard-shell-shaped scaling, sticky oil dirt or solid particle accumulation can be effectively stripped off from the pipe wall through the scraping plate, the bag body has soft texture and good water absorption, and the bag body is not prone to falling off. The inner wall of the pipeline can be wiped carefully after the scraping plate scrapes most dirt, and residual sewage and small particles can be adsorbed, so that the inner wall of the pipeline is smoother and cleaner.

The invention relates to the technical field of power generation and energy storage, and discloses liquid cooling type new energy power generation and energy storage equipment which comprises a cabinet body. The energy storage equipment is mounted in the cabinet body; the temperature sensor is mounted on the side surface of the energy storage equipment; the cooling structure is arranged on the side surface of the energy storage equipment; the water removal structure is arranged on the side surface of the energy storage equipment; the water receiving structure is arranged on the side face of the energy storage equipment and located below the cooling structure; and the feedback structure is arranged on the side surface of the energy storage equipment. The mounting plate and the absorbent cotton on the mounting plate are driven to move through the connecting plate, the vertical plate and the connecting piece, the absorbent cotton is tightly attached to the side face of the outer-layer pipe, the absorbent cotton is clamped to the outer-layer pipe through the grooves in the absorbent cotton, and therefore condensate water generated on the surface of the outer-layer pipe can be effectively absorbed in the moving process; by means of the design, the situation that water mist is condensed into water drops and drips is avoided, and it is ensured that condensate water is effectively treated in time.

The invention provides a carbon nano tube film flexible electric heating composite fabric and a preparation method, and solves the technical problems that the existing heating fabric cannot be folded for multiple times, is poor in comfort and cannot be cut, the carbon nano tube film flexible electric heating composite fabric comprises an antibacterial layer, a waterproof layer, a heating layer and a substrate layer, the waterproof layer comprises an upper waterproof layer and a lower waterproof layer, the device is characterized in that an upper waterproof layer and an antibacterial layer are sequentially arranged at the upper end of the heating layer, a lower waterproof layer and a substrate layer are sequentially arranged at the lower end of the heating layer, and the heating layer comprises a heating element and a flexible electrode; the heating element is a carbon nanotube film made of multi-walled carbon nanotubes with two closed ends and placed in the same direction, the conductivity of the heating element in the longitudinal direction is larger than that in the transverse direction, and the surface of the carbon nanotube film is electrically connected with the flexible electrode in a longitude and latitude crossing mode. The method can be widely applied to the technical field of cloth preparation.

The invention discloses a foundation pit supporting structure, and relates to the technical field of foundation pit supporting, and the foundation pit supporting structure comprises a supporting plate, a plurality of water absorption pieces and a plurality of positioning rods; a plurality of mounting grooves are formed in one side of the support plate, and the plurality of water absorption pieces are respectively arranged in the plurality of mounting grooves; a plurality of penetrating holes are formed in the supporting plate in a penetrating mode, a sharp thorn is arranged at one end of the positioning rod, and after the sharp thorn penetrates into soil at the bottom of a foundation pit, the part, located in the penetrating holes, of the positioning rod blocks openings in the bottoms of the penetrating holes; a plurality of water passing spaces, a plurality of first water seepage holes and a plurality of second water seepage holes are further formed in the supporting plate; the water passing space is communicated with the mounting groove through the plurality of first water seepage holes, and the water passing space is communicated with the through hole through the plurality of second water seepage holes. The supporting effect can be effectively achieved on the surrounding foundation pit with the high soil humidity, and meanwhile the probability of water permeation can be effectively reduced.

The invention discloses a ternary sand-fixing water-retaining seepage-proofing fertility-increasing vegetation restoration and reconstruction method, and relates to the technical field of operation methods of sand ecological restoration, and the method comprises the following steps: S1, laying a layer of seepage-proofing material on the surface layer of a target planting area to reduce water seepage and enhance soil water-retaining capacity; s2, mixing a water-retaining agent with local sandy soil to form a water storage layer, and paving the water storage layer on the surface of the impermeable material to ensure that the plant root system can obtain water for a long time; s3, applying an organic fertility intensifier to the water storage layer to improve the organic matter content and nutrient supply capacity of the soil; s4, appropriate plants are selected for planting, after planting, the vegetation growth condition and the soil humidity are checked regularly, a water-retaining agent and an organic fertility increasing agent are supplemented in time according to needs, and it is ensured that the vegetation can grow healthily. The planting method provided by the invention has a remarkable yield increasing effect, the survival rate of plants can be effectively improved, and the effect of fixing sand for a long time is achieved.

The invention relates to three-dimensional modified polyvinyl alcohol hydrogel as well as a preparation method and application thereof, and relates to the technical field of evaporation materials, few layers of FLG and alpha type Bi2O3 are doped in polyvinyl alcohol hydrogel, and Ppy vapor deposition is performed on the surface of the hydrogel to obtain the three-dimensional modified polyvinyl alcohol hydrogel 3D-PVA coated Bi2O3-FLG / Ppy PEMs. After the material prepared by the method is finally optimized, the evaporation rate reaches 4.03 kg / (m < 2 >. H), meanwhile, the stable evaporation rate of 3.06 kg / (m < 2 >. H) is shown in an evaporation experiment for simulating northern sea water polluted by methylene blue dye, and the degradation effect on pollutants in evaporated water reaches 81% in an illumination experiment. The material prepared by the method not only has high evaporation rate in seawater desalination application, but also shows great potential and application prospect in treatment of seawater polluted by organic dye.

The invention belongs to the field of paper products, and particularly relates to a pulp composition for a high-quality paper product and application of the pulp composition. The bio-based additive comprises a component A, a component B and a component C, wherein the component A is one or two of a biomass material with a dendritic or network-shaped structure or a cationized biomass material with a dendritic or network-shaped structure; and optionally containing or not containing a component B: one, two or more selected from the group consisting of polyhydroxyalkanoates, alkyl ketene dimers, polyglycolide, polylactide, copolymers of butylene adipate and butylene terephthalate, polyoxyethylene stearate, cellulose esters and cellulose ethers. A large number of hydroxyl groups are distributed in the component A, the hydroxyl groups can form hydrogen bonds with cellulose and the like in fiber pure pulp to form a larger network structure, the prepared paper product is high in strength, meanwhile, the hydrogen bonds and the hydroxyl groups are beneficial to water interception, and the water absorption of the paper product can be improved.

The cold compress device comprises a circulating cold compress main machine and a cold compress bag connected with the circulating cold compress main machine, the circulating cold compress main machine and the cold compress bag are connected through a cooling water conveying pipe and a circulating water conveying pipe, and the upper side and the lower side of the center of the outer wall of the front end of the cold compress bag are each provided with a hook-and-loop fastener bandage. A novel water absorption protection device is additionally arranged at the rear end of the cold compress bag, when the cold compress bag is bound to a wound of a patient through a hook-and-loop fastener binding band, the water absorption protection device is located between the skin of the wound and the cold compress bag, in the cold compress process of the traumatic orthopedics department, the traditional cold compress device often makes the patient feel uncomfortable due to accumulation of condensate water, and the cold compress bag is inconvenient to use. The water absorption protection device can absorb condensate water generated on the skin and around the skin in time, the cold compress part is kept dry and comfortable, the comfort degree of a patient in the cold compress process is greatly improved, the patient does not need to bear the wet feeling brought by the condensate water, and therefore the water absorption protection device can better cooperate with treatment.

The invention discloses a lignocellulose modified ammonium polyphosphate hydrogel slow-release fertilizer and a preparation method thereof, and belongs to the technical field of slow-release fertilizers, the preparation method comprises the following steps: adding biomass into an alkaline solution for heating treatment, adding biomass into an acidic solution for heating treatment, and collecting a reaction solution; adding urea into the reaction solution, reacting under a heating condition to prepare an ammonium polyphosphate-lignocellulose mixture, grinding the ammonium polyphosphate-lignocellulose mixture into powder, and then adding the powder into a potassium persulfate solution to prepare a suspension; the preparation method comprises the following steps: adding potassium hydroxide, acrylic acid, acrylamide, urea and MBA into water under heating and nitrogen protection to obtain a mixed solution; mixing the suspension liquid with the mixed solution, heating and reacting under nitrogen and stirring conditions, dicing and drying to prepare the slow-release fertilizer which has good water and fertilizer retention capacity, relatively strong slow-release capacity, soil structure improvement capacity and heavy metal adsorption potential, and effectively solves the problems of poor water retention capacity and poor soil improvement effect in the prior art.

The invention provides citric acid-cyclodextrin derivative controlled-release composite supramolecular hydrogel and a preparation method thereof.The preparation method comprises the steps that citric acid and cyclodextrin are mixed and fully dissolved through ultrasonic treatment; adjusting the pH value of the solution to 0.5-2.0 to promote a cross-linking reaction, and carrying out the cross-linking reaction for 3-5 hours at 40-60 DEG C based on an optimized temperature condition; cooling the reacted solution to room temperature, and adding a proper amount of cross-linking agent for self-assembly to form gel; and after drying treatment, the gel is molded into a structure with a required form and a stable state. By optimizing the cross-linking reaction conditions of citric acid and cyclodextrin, the hydrogel with a unique net structure and mechanical strength is obtained. The material has excellent water absorption, biocompatibility and mechanical properties, and is especially suitable for the fields of tissue engineering, biomedicine and environmental protection. The preparation process comprises the steps of chemical treatment of raw materials, control of reaction conditions, self-assembly and cross-linking reaction, forming, drying and the like.

The invention provides a preparation method of a non-irritant cool mosquito-repellent wet tissue. The preparation method comprises the following steps: S1, selecting a spunlace non-woven fabric as a base material of the wet tissue; s2, preparing mosquito-repellent liquid which is prepared by mixing the following components in percentage by weight: 1 to 5 percent of mint extract, 1 to 5 percent of clove extract, 1 to 5 percent of bee sting extract, 1 to 5 percent of narcissus extract and the balance of water, and the mosquito-repellent liquid is prepared by mixing the following components in percentage by weight: 1 to 5 percent of mint extract, 1 to 5 percent of clove extract, 1 to 5 percent of bee sting extract, 1 to 5 percent of narcissus extract and the balance of water; s3, the base material is soaked in the mosquito repelling liquid medicine. According to the invention, natural Chinese herbal medicine extracts are adopted to prepare the mosquito-repelling liquid medicine, the mosquito-repelling liquid medicine is non-irritant to skin and suitable for long-term use, and the adopted mint extract has the effects of cooling fragrance, clearing heat and eliminating fire, and can effectively relieve skin itch; the adopted clove, bee sting and narcissus extracts have unique fragrance and mosquito repelling effect, and mosquito bites can be effectively prevented; and the spunlace non-woven fabric is adopted as a base material, and is soft in texture, breathable, good in water absorption and comfortable to use.

The invention relates to a springback-reducing sprayed concrete admixture suitable for alpine and low temperature and application of the springback-reducing sprayed concrete admixture. The springback-reducing sprayed concrete admixture comprises the following components: 50-80 parts of a water reducing agent; 5 to 30 parts of a graphene oxide-nano chitin copolymer; 400 to 500 parts of a nano active component; 20-40 parts of an auxiliary material; and 300 to 450 parts of water. Nano chitin (ChNF) prepared by a TEMPO method is subjected to silanization modification and then is grafted with graphene oxide to obtain GO-ChNF. In the concrete, the graphene oxide, the nano chitin and the nano active component are compounded in proportion, a two-dimensional lamellar structure of GO and the nano chitin can be bridged between hydration products and cooperate with auxiliary materials to achieve a lubricating effect, the flowing working performance of the sprayed concrete is improved while the bonding performance is not lost, spraying construction is smooth, pipe blockage is avoided, and the service life of the sprayed concrete is prolonged. The construction efficiency is improved and the cost is reduced. The copolymer can reduce the porosity in the concrete by 15-20%, and can form a barrier layer on a concrete interface, thereby effectively preventing harmful substances such as moisture, chloride ions and the like from invading, protecting the internal structure of the concrete and improving the durability of a support system.

The invention relates to the technical field of new materials, and discloses an amino-terminated phosphorus-containing starch modified polyethylene flame-retardant composite material which is prepared by using polyethylene grafted phosphorus-containing starch as a modifier, carrying out blending modification on high-density polyethylene and using a polyethylene molecular chain introduced by a phosphorus-containing starch side chain as a compatilizer. The polyethylene grafted phosphorus-containing starch and the high-density polyethylene have good interfacial compatibility, the influence on the mechanical tensile strength and other mechanical properties of the high-density polyethylene is avoided, meanwhile, the starch is used as an expansion carbon source, and the side chain grafted phosphaphenanthrene derivative is used as a phosphorus-containing flame retardant, so that the phosphorus-containing flame-retardant polyethylene is prepared. The high-density polyethylene prepared by the preparation method has the advantages that the high-density polyethylene is used as a raw material, phosphoric acid compounds and phosphorus-oxygen free radicals are generated by thermal decomposition during combustion, and the phosphoric acid compounds are high in water absorption, so that the starch can be dehydrated and carbonized, a continuous and stable carbon barrier layer is formed in the high-density polyethylene, and smoke escape can be inhibited, molten drops can be prevented, and oxygen and heat insulation effects can be achieved.

The invention discloses plant waste-based module soil for facade planting, and belongs to the technical field of biomass composite materials, the plant waste-based module soil comprises foaming polyurethane, an antibacterial agent and plant waste; the foamed polyurethane is prepared from a polyol component and an isocyanate component; the antibacterial agent is obtained by carrying out grafting reaction on epoxy quaternary ammonium salt and polyethyleneimine. According to the plant waste-based module soil, foaming polyurethane, an antibacterial agent and plant waste serve as raw materials, a light foaming material of a three-dimensional net structure is formed, the material contains a large number of organic substances and has the performance of being high in water absorption, high in water retention rate and the like, and the plant waste-based module soil is endowed with certain antibacterial property by adding the antibacterial agent; under the condition that the good antibacterial effect is guaranteed, the water absorption and water retention effects of the plant waste-based module soil are improved, and the plant waste-based module soil can be used as an excellent three-dimensional greening integral culture medium.

The invention discloses a preparation method of high-toughness dust-free paper, and relates to the technical field of dust-free paper preparation, the high-toughness dust-free paper comprises 10-60 parts of a first layer, 10-30 parts of a second layer and 10-20 parts of a third layer, the first layer comprises wood pulp fiber, the second layer comprises polypropylene fiber, the third layer comprises high-molecular water-absorbent resin and aramid fiber, and the third layer comprises water-absorbent resin and aramid fiber. The wood pulp fibers have the characteristic of soft texture, so that the dust-free paper does not scratch or damage the surface of an object in the wiping process, and the polypropylene fibers and the aramid fibers are added, so that the strength and the toughness of the dust-free paper are further enhanced, the dust-free paper is more durable, the dust-free paper can be kept stable in a severe working environment, and the service life of the dust-free paper is prolonged. The dust-free paper is not easy to age or deform, and the molecular structure of the aramid fibers can keep stable under high-temperature and high-pressure occasions, so that static electricity generated in the use process of the dust-free paper can be effectively reduced, and sensitive equipment and components are protected from being damaged by the static electricity.

The invention discloses a preparation process of a Yellow River superfine sand 3D printing concrete material, which comprises the following steps: (1) immersing microcrystalline glass fine aggregate into a sodium silicate or potassium solution for treatment, and then drying to obtain pretreated fine aggregate; (2) dispersing sepiolite micro powder and the pretreated fine aggregate into water, and heating to obtain modified fine aggregate a; and (3) mixing the modified fine aggregate a with the liquid phase obtained by solid-liquid separation to form a mixture, then placing the mixture in a carbon dioxide atmosphere for carbonization treatment, and then performing heating treatment to decompose silicic acid into silicon dioxide to obtain modified fine aggregate b. And (4) mixing Portland cement, the modified fine aggregate b, Yellow River superfine sand, silica fume, a water reducing agent and fibers as raw materials, adding mixing water, and uniformly stirring to obtain the 3D printing concrete material. According to the process, the bleeding phenomenon caused by the Yellow River superfine sand is relieved, and the prepared concrete has the characteristics of good extrusion performance and stable shape after printing.

The invention discloses a cat litter using ardealite as a raw material and a preparation method thereof, and relates to the technical field of cat litter production, the cat litter is prepared by using ardealite as a main raw material and adding an organic binder and an inorganic binder, and the preparation process comprises the steps of material mixing, granulation, drying and the like. The ardealite cat litter particles prepared by the invention can be quickly clustered when meeting water, so that the effect of absorbing cat urine is achieved; the improved ardealite cat litter has unique chemical properties, can naturally inhibit bacteria and deodorize, and has unique characteristics of a soil conditioner, and the agglomerated ardealite cat litter can be converted into nutrient soil to be discarded as household garbage, so that the ardealite cat litter is green, environment-friendly and pollution-free.

The invention relates to the technical field of adsorbent preparation, in particular to an imidazolium salt polymer adsorbent as well as a preparation method and application thereof. The preparation method of the imidazolium salt polymer adsorbent comprises the following steps: mixing a polybromophenyl organic compound, imidazole, alkali and a catalyst, and carrying out nucleophilic substitution reaction under the action of the catalyst and the alkali to obtain a triimidazolyl organic monomer; the preparation method comprises the following steps: dissolving a triimidazolyl organic monomer and 1, 4-di (bromomethyl) benzene in an organic solvent, and carrying out quaternization reaction to obtain the imidazolium salt polymer adsorbent. The imidazolium salt polymer adsorbent prepared by the method disclosed by the invention not only can accurately identify and adsorb Cr2O7 < 2-> and remarkably improve the removal efficiency of Cr2O7 < 2->, but also can keep an efficient working state in a wide pH value range. Meanwhile, the material can be easily separated from wastewater and can be repeatedly used after being subjected to simple regeneration treatment, so that cyclic utilization of resources is realized.

The invention discloses a chitosan nanofiber-based hemostatic sponge and a preparation method thereof, and belongs to the field of dressing preparation. The chitosan nanofiber-based hemostatic sponge is mainly prepared from chitosan nanofibers, alginate, amorphous calcium salt and a cross-linking agent. The chitosan nanofiber is used as a main framework of the hemostatic sponge, and blood cells and platelets can be conveniently adsorbed due to a large number of amino groups and high porosity; due to the existence of alginate, blood clots can be conveniently formed after the hemostasis sponge absorbs blood; the existence of calcium promotes the initiation of a blood coagulation cascade reaction and synergistically accelerates the hemostasis effect. The three components are combined to complement each other, so that the hemostatic sponge has more excellent hemostatic performance, and an excellent blood coagulation and hemostasis effect is achieved after all aspects are integrated.

A sludge dehydration and drying device and method, belonging to the technical field of sludge treatment, wherein the device comprises a heating pre-dehydration chamber and upper and lower filter cloths and a high-pressure dehydration assembly, the upper and lower filter cloths pass through the sludge conveying channel formed by the heating pre-dehydration chamber, the upper and lower filter cloths are fed and collected along the channel, the heating pre-dehydration chamber is provided with a feed port for inputting sludge, the outer sides of the upper and lower filter cloths are provided with sliding rollers, the heating pre-dehydration chamber is provided with a flue gas inlet to heat and condition the sludge in the filter cloth interlayer online to achieve heating pre-dehydration, one end of the heating pre-dehydration chamber is provided with a high-pressure dehydration assembly, the high-pressure dehydration assembly comprises a high-pressure dehydration tank and a matching hydraulic cylinder, the high-pressure dehydration tank is provided with a circulating cloth mechanism to reciprocately fold the interlayer filter cloth in the high-pressure dehydration tank, and the hydraulic cylinder presses the multi-layer filter cloth for high-pressure dehydration. The present invention realizes deep drying and dehydration, and finally obtains a sludge moisture content of <10%, and has the advantages of high dehydration efficiency, low operating cost, strong practicality, etc.

The utility model discloses a medical delactation bra, and relates to the technical field of brassieres, the medical delactation bra comprises a bra main body, the bra main body is formed by mutually attaching a bra surface layer and a bra inner layer which are the same in shape, cup stickers are arranged between the bra surface layer and the bra inner layer, and mutually-communicated and mutually-independent cavities are arranged in the cup stickers; the cavities are filled with mirabilite particles, the bra surface layer is provided with a zipper, and cavity inlets are formed in the positions, facing the zipper, of the cups. According to the application, the interior of the bra main body is filled with the mirabilite particles, the mirabilite can reduce milk secretion and relieve breast distending pain during delactation, and meanwhile, the mirabilite also has relatively strong water absorption and can absorb part of milk and relieve the moist feeling when the bra is worn.

The utility model discloses a sealing foam with stronger water absorption capacity, which comprises an upper foam main body, a lower foam main body, a water absorption component and a fastener, the lower foam main body is adhered to the bottom of the upper foam main body, and the water absorption component is adhered to the bottom of the lower foam main body. The water absorption assembly comprises a water absorption box bonded to the right side of the upper foam body and the right side of the lower foam body, an iron net arranged on the water absorption box, a drying agent placed in the water absorption box and a blocking cover connected with the right side of the water absorption box through a hinge. The fastener comprises a fixed seat arranged at the top end of the water absorption box, a fastening knob in threaded connection with the fixed seat and a rotating plate rotationally connected with the fastening knob. Through the arrangement of the water absorption assembly, under the condition that sealing of the sealing foam is not affected, the effect of high water absorption capacity is achieved, water is prevented from entering, and meanwhile the blocking cover can be fixed or released through the arrangement of the fastener so that the drying agent can be replaced conveniently.

The invention provides a preparation method of a hydrogel mask containing silk fibroin, and relates to the technical field of cosmetics. The silk fibroin hydrogel mask comprises the following main components: silk fibroin, polyvinyl alcohol and D-sorbitol. The preparation method of the silk fibroin hydrogel mask comprises the following steps: dissolving polyvinyl alcohol at high temperature; and adding silk fibroin and D-sorbitol, uniformly mixing, injecting into a mold, carrying out circulating freezing and thawing, and obtaining the silk fibroin hydrogel mask through a physical cross-linking method. The silk fibroin hydrogel mask disclosed by the invention has the advantages of good mechanical property, good viscoelasticity and toughness, mildness, skin friendliness, high water-retaining property and remarkable moisturizing effect, and can be directly used as a mask.

The present invention relates to a bulked yarn having a bulkiness of 10 cm < 3 > / g or more, the bulked yarn comprising a first fiber and a second fiber, the first fiber comprising an artificial protein fiber which contains an artificial protein and which can shrink after contact with water, and the second fiber having a lower shrinkage rate after contact with water than the first fiber, and the bulked yarn having a bulkiness of 10 cm < 3 > / g or more.

The present application relates to the technical field of bamboo fiber composite material, in particular to a purification preparation method of bamboo fiber reinforced natural polymer composite material. The bamboo raw material is crushed and treated by steam explosion to obtain primary bamboo fiber; the primary bamboo fiber is sequentially subjected to organic solvent dewaxing treatment and oxidation system selective delignification treatment to obtain purified bamboo fiber; the purified bamboo fiber is treated in a tannin acid solution to form a polyphenol interface layer on the surface thereof; and a solution containing polyvalent metal ions is added to the treated bamboo fiber to form a coordination cross-linking interface layer on the surface of the bamboo fiber. The present application constructs a stable interface layer between the fiber and the natural polymer matrix. The interface layer can effectively transfer stress, significantly improve the tensile strength, bending strength and shear strength of the composite material, and solve the problem of weak interface and easy delamination of traditional natural composite materials.

The utility model discloses environment-friendly water-free direct-injection wood pulp cotton which comprises a containing box, a pressing sleeve is connected to the outer side of the containing box in a sleeved mode, a wood pulp cotton body is installed in the containing box, a sliding groove is formed in the outer side wall of the containing box, and the pressing sleeve is connected to the interior of the sliding groove in a sliding mode. The first springs are fixedly installed at the inner bottoms of the sliding grooves, the lower ends of the left end and the right end of the pressing sleeve are slidably connected with limiting rods, one ends of the limiting rods penetrate and extend to the inner side wall of the containing box, and the outer sides of the limiting rods are connected with second springs in a sleeving mode. According to the environment-friendly water-free direct-injection wood pulp cotton, the wood pulp cotton has good water absorption, so that water is prevented from being injected and flowing, meanwhile, mould breeding can be effectively prevented, the cleaning efficiency is improved, cleanliness and sanitation are kept, then the wood pulp cotton can be effectively protected against external pollution, damage and pollution, and the environment-friendly water-free direct-injection wood pulp cotton is worthy of popularization and application. Meanwhile, the risks of pollution and bacterial infection are reduced, and then the overall attractiveness and usability are improved.

The invention belongs to the technical field of cleaning supplies, and particularly relates to a cleaning tool which comprises a mop and a mop bucket body, and a clean water area and a placement area are arranged in the mop bucket body; the mop comprises a mop head and a mop rod which are hinged to each other, and a plurality of long wiping strips are arranged below the mop head; the water throwing basket is rotationally connected into the mop bucket body, and the bottom of the water throwing basket is divided into a cleaning area and a water storage area; and a locking device is arranged on the spin-drying basket / mop bucket body. When the locking device takes effect, the mop head is placed in the water throwing basket, the mop head rotates, the water throwing basket is static relative to the bucket body of the mop bucket, the liquid outlet device in the clean water area discharges liquid, clean water flows to the long wiping strip and the water storage area, and the long wiping strip can be cleaned through the cleaner in the water throwing basket. When the locking device does not take effect, the liquid outlet device does not discharge liquid, the mop head can drive the water throwing basket to rotate synchronously, and the cleaner fixedly arranged in the water throwing basket does not clean the long wiping strip. The invention provides a cleaning tool which is good in cleaning effect and saves labor.

The invention provides a low-water-absorption glass bead modified PBT (polybutylene terephthalate) material and a preparation method thereof. The low-water-absorption glass bead modified PBT material comprises the following components in parts by weight: 70-100 parts of PBT resin; 0 to 30 parts of solid glass beads; 0-5 parts of a toughening agent; 0-2 parts of an antioxidant; 0-2 parts of a lubricant; 0-2 parts of black color master batch; 0-2 parts of a coupling agent; 0-5 parts of polytetrafluoroethylene wax; wherein the average particle size of the solid glass beads is 1-50 [mu] m; the average particle size of the polytetrafluoroethylene wax is 3-15 [mu] m, and the weight-average molecular weight of the polytetrafluoroethylene wax is 10000-30000 g / mol; the weight ratio of the solid glass beads to the polytetrafluoroethylene wax is (5-10): 1. According to the invention, the polytetrafluoroethylene wax is added into the solid glass bead modified PBT material, so that the shrinkage difference between the material flow direction and the vertical flow direction is effectively reduced, the water absorption rate of the material is remarkably reduced, the preparation process is simple, and the production process is easy to control.

The invention discloses a levonorgestrel tablet and a preparation method thereof. The levonorgestrel tablet is prepared from the following components: 0.75 part of levonorgestrel, 20 to 30 parts of lactose, 20 to 25 parts of corn starch, 0.8 to 1.0 part of corn starch slurry, 1 to 2 parts of colloidal silicon dioxide, 1 to 2 parts of talcum powder and 1 to 2 parts of magnesium stearate. The colloidal silicon dioxide provided by the invention can cooperate with the corn starch to help the tablet to be disintegrated more quickly in vivo, so that the release rate of the medicine is accelerated. The dissolution rate of the prepared levonorgestrel tablet reaches 65.6%-70.7% in 30 minutes, and the dissolution rate of the prepared levonorgestrel tablet reaches up to 86.0% in 60 minutes.