94 results about "Sisal fiber" patented technology

The invention discloses a woven carpet of various plant fibers, which is characterized in that warp yarns A comprise yarns A spun by sisal fibers, warp yarns B comprise yarns B spun by hemp fibers or blended by hemp fibers and cotton fibers, weft yarns are yarns C spun by banana tree stem fibers, the weft yarns are wound above or below the warp yarns A in a staggered manner, two warp yarns A are wound by the weft yarns each time, and the weft yarns are wound by the weft yarns each time. The warps B are located between every two adjacent warps A at intervals, the wefts wound below the warps A are wound below the warps B in a staggered mode or between the warps B and the warps A, and the directions of every two adjacent wefts vertically wound on the warps A and the warps B are opposite. According to the structure, the thickness of the woven carpet made of various plant fibers is increased, and the top surface of the carpet is made of natural plant fibers; the friction coefficient between the silica gel layers on the surfaces of the warps B and the ground is large, so that slipping between the carpet and the ground is avoided, the warps A and the wefts can be matched to be woven more tightly through the action of the silica gel layers, and the overall softness of the carpet is further improved.

The invention relates to the field of concrete, and particularly discloses self-compacting concrete and a preparation method thereof. The self-compacting concrete comprises the following raw materials in parts by weight: 320-370 parts of cement; 800 to 840 parts of coarse aggregate; 750 to 780 parts of fine aggregate; 12 to 19 parts of a fiber composition; 55 to 70 parts of fly ash; 20-35 parts of steel slag powder; 1-3 parts of a water reducing agent; 140 to 175 parts of water; 8-14 parts of an expanding agent; the fiber composition is hybrid fibers of steel fibers and sisal fibers, and the weight ratio of the steel fibers to the sisal fibers is (9-13): (3-6). The self-compacting concrete has the effects of inhibiting self-constriction and plastic constriction of the self-compacting concrete, reducing generation of harmful cracks and improving the strength and impermeability of the self-compacting concrete.

According to the steel wire rope composite rope core and the production method thereof, a composite structure composed of the composite core yarn and the outer layer core yarn is adopted, the composite core yarn is formed by weaving the sisal fiber yarn and the jute fiber yarn which have high oil storage performance in a staggered mode, and therefore the composite core yarn has certain strength and toughness, and meanwhile the manufacturing cost is reduced; meanwhile, the outer-layer core wire comprises an outer-layer steel wire layer consisting of outer-layer steel wires and a modified fiber layer consisting of modified PP fiber yarns; the overall strength and tensile strength of the composite rope core are improved by arranging the outer steel wire layer, and the PP fibers with low cost, the PE-based carbon fibers, the polymer polyethylene particles and the graphene are subjected to melt blending to obtain the modified PP fibers, so that the cost is further reduced while the tensile strength of the PP fibers is improved; therefore, the overall tensile capacity and strength of the composite rope core are effectively guaranteed; in addition, by arranging the fiber net layer and the steel wire net layer, the inner core wire structure can be fastened, core wires are prevented from loosening, and the strength of the composite rope core is further improved.

The invention relates to low-carbon low-thermal-conductivity geopolymer-based fully-recycled concrete and a preparation method thereof. The low-carbon low-thermal-conductivity geopolymer-based fully-recycled concrete comprises the following components in parts by weight: 400-500 parts of blast furnace slag; 25 to 90 parts of regenerated powder; 400 to 500 parts of recycled fine aggregate; 900 to 1000 parts of recycled coarse aggregate; 4-20 parts of sisal fiber; 200 to 250 parts of an alkali excitation liquid; 90 to 118 parts of water; 5-12 parts of a water reducing agent; and 1-4 parts of a retarder. The alkali excitation liquid comprises 135 parts of water glass and 90 parts of sodium hydroxide solution. Compared with the prior art, the recycled coarse aggregate and the recycled fine aggregate are used for replacing natural gravel aggregate, the slag and the recycled powder are mixed to serve as an alkali-activated precursor, and the chopped sisal fibers are doped to guarantee the toughness and the crack resistance of the concrete; the invention provides an application scheme for preparing geopolymer fully-recycled concrete by effectively absorbing building solid wastes and recycling a large amount of recycled concrete powder and sisal fibers, mainly focuses on'waste-free city 'construction, increases the utilization efficiency of the building wastes and industrial solid wastes, creates low-carbon low-thermal-conductivity concrete, and has a wide application prospect.

The invention discloses a modified plant fiber polylactic acid composite material and a preparation method thereof, and belongs to the technical field of composite materials. The modified plant fiber polylactic acid composite material comprises the following components in parts by weight: 11-13 parts of polylactic acid and 12-15 parts of thermal insulation gel liquid. According to the method, the performance of the polylactic acid material is improved in the mode that the thermal insulation gel liquid reinforced polylactic acid is prepared from the sisal fibers, meanwhile, the organic metal framework is prepared, the technical effect of reducing the water absorption of the sisal fibers is achieved, and meanwhile the bonding strength and damp-heat aging resistance of the composite material are improved.

The invention relates to the technical field of papermaking, in particular to food waterproof and oilproof paper and a preparation method thereof.The food waterproof and oilproof paper is composed of base paper and a coating layer covering the surface of the base paper; the base paper is prepared from the following raw materials: sisal fibers, polylactic acid fibers, water glass, nano silicon dioxide, starch and polyacrylamide; preparing a coating layer: coating the surface of base paper with the coating liquid, and then drying and calendering to obtain the coating layer; the coating liquid is prepared from the following raw materials: modified fucoidin, poly (butylene succinate), modified nano cellulose, sorbitol, polysilicate aluminum sulfate, polyvinyl alcohol, sodium thiosulfate and water. Through matching and combination of the raw materials, the food waterproof and oil-proof paper has certain antibacterial property and strength while improving waterproof and oil-proof properties, and the food fresh-keeping effect is improved.

The present invention relates to an ABS composite material and a preparation method thereof, belonging to the technical field of polymer materials. The present invention is obtained by modifying ABS and simultaneously blending it with sisal fiber, carbon fiber, long glass fiber, and copolymerized polypropylene; in the present invention, sisal fiber, carbon fiber, long glass fiber, and copolymerized polypropylene are blended with modified ABS powder, increasing the stiffness and strength of the ABS composite material; through fiber fracture, fiber pull-out, and the expansion of matrix cracks, the impact toughness of the ABS material is enhanced, achieving the effect of dissipating impact energy, and also improving the durability and lifespan of ABS products; ABS is modified to form modified ABS powder, improving the bonding force between modifier particles and fibers, enabling the ABS composite material to have good toughness, with significant improvement in mechanical properties. At the same time, the toughness, stiffness, and hardness of the products made of ABS are also improved.

The invention discloses a modified resin composition for a high-pressure-resistant and high-wear-resistant PVC (polyvinyl chloride) hose, and belongs to the technical field of PVC pipes. The sisal fibers are subjected to alkali treatment, impurities are removed and active sites are increased through insertion modification and alkali treatment of the magnesium aluminate spinel fibers, the magnesium aluminate spinel fibers improve the performance of the pipe due to the high length-diameter ratio and other characteristics of the magnesium aluminate spinel fibers, a stable enhanced network structure is formed in a PVC matrix, the surface hardness and wear resistance are improved, the pressure is shared, and the pressure resistance is improved. A bicyclo [2.2. 2] octane structure contained in the long-chain graft modifier disclosed by the invention has rigidity and steric hindrance effect, can uniformly disperse pressure to avoid breakage or excessive deformation of a molecular chain, and is coupled with an amino silane coupling agent to form a three-dimensional structure to improve pressure resistance and wear resistance. After sulfonic groups and a long-chain grafting modifier are introduced to the surfaces of the interspersed modified sisal fibers, the hydrophobic and oleophylic properties of the sisal fibers are improved, the compatibility with PVC is enhanced, agglomeration is avoided, friction is effectively resisted, and the processing fluidity of the material is improved.

The present invention relates to an antibacterial carpet prepared from sisal fibers and a preparation method thereof. The antibacterial carpet is sequentially provided with a bottom support layer, a first antibacterial functional layer, a second antibacterial functional layer, and a top support layer from bottom to top. By reasonably optimizing the composition ratio of each layer, the bottom support layer plays a role in absorbing the ground and preventing slipping, not mildewing, being resilient and deformable. The first antibacterial functional layer plays a role in antibacterial and preventing the connection between the bottom support layer and the functional layer from being insufficiently tight. The second antibacterial functional layer plays a role in antibacterial and preventing the antibacterial components from being melted and falling off due to being soaked by water. The top support layer plays a role in quickly absorbing water, moisture-proof, anti-slip, facilitating cleaning, and not leaving stains, perfectly solving the problems existing in the existing sisal carpets, such as not being suitable for water washing, poor elasticity, local swelling and hardening after a large amount of moisture absorption, easy color change under direct sunlight, and lack of antibacterial property.

The invention relates to the technical field of soil solidification, in particular to solidified shield waste clay and a preparation method thereof. The solidified shield waste clay comprises the following components in parts by weight: 1000 parts of waste clay, 20-80 parts of magnesium oxide, 40-100 parts of carbide slag, 60-80 parts of boric sludge, 10-15 parts of a composite additive and 2-3 parts of an activator, and the composite additive is formed by compounding modified sisal fiber, bio-enzyme-attapulgite and an anionic surfactant. The high-plasticity and high-water-content waste clay is efficiently cured, the performance of the high-plasticity and high-water-content waste clay is improved, and the problem about treatment of the waste clay generated during shield construction is solved; and through the synergistic effect of the inorganic soil stabilizer, the modified sisal fiber in the composite additive, the biological enzyme attapulgite and the anionic surfactant, the soil is promoted to form denser granules, the strength and water stability of the solidified soil are remarkably improved, and a new technical path is provided for resource utilization of the shield waste soil.

The present invention discloses a kind of ultra-high fracture toughness, high strength, high fluidity green ultra-high performance concrete and its preparation method, and belongs to the technical field of ultra-high performance concrete. The present invention uses alkali-activated concrete as a substrate, and by internally doping modified sisal fiber and modified graphene-PE fiber, obtains ultra-high fracture toughness, high strength, high fluidity green ultra-high performance concrete with the advantages of high mechanical strength, fast setting speed, good fluidity, high construction performance and durability, which can be widely used in bridge engineering and road engineering. The present invention uses industrial waste such as desulfurization ash and coal gangue as raw materials, which can solve the problems of industrial waste stacking, turn waste into treasure, save resources and protect the environment.

The invention belongs to the field of acoustic materials, and relates to a biomass full-degradable porous sound absorption material and a preparation method thereof. In order to solve the problems of poor low-frequency performance, high energy consumption in the production process, non-degradability and the like of the existing sound absorption material, sisal fibers are used as a framework, gelatinized starch is used as a binder, a cross-scale pore structure with the porosity of 70%-87% is realized by regulating and controlling the ratio of water to starch (the mass ratio is 3: 1-15: 1), and a highly through hierarchical pore network is formed by combining a freeze drying process. Through the design of the thickness (10-50 mm) and the backing cavity (10-50 mm), the low-frequency sound absorption performance is remarkably improved, the noise reduction coefficient reaches up to 0.73, the material has good mechanical performance (the tensile strength is 0.5-2.3 MPa) and heat insulation performance (the heat conductivity coefficient is 0.06-0.105 W / (m.K)), meanwhile, bio-based raw materials (sisal fibers and corn starch) are adopted, complete degradation can be achieved, and the production process is free of pollution. The low-frequency sound absorption bottleneck of a natural fiber material is solved, and the composite material is suitable for the fields of building sound insulation, traffic noise reduction and the like and has high efficiency, environmental protection property and economical efficiency.

The invention relates to the technical field of inorganic millstone preparation, and particularly discloses an inorganic millstone and a preparation method thereof. The inorganic millstone comprises cement, sand, aggregate, modified sisal fibers, glass, color pigment and a water reducing agent, the aggregate comprises calcined oyster powder, silicon dioxide modified ceramic powder and slag powder, and the modified sisal fibers are prepared by sequentially carrying out alkali treatment, titanium carbide coating and silane coupling agent treatment on sisal fibers. According to the inorganic millstone provided by the invention, the aggregate components and the fiber components are optimized, so that the prepared inorganic millstone has excellent strength and wear resistance, and a new idea is provided for preparation of the inorganic millstone.

The invention provides anti-burst and anti-impact sacrificial concrete and a preparation method thereof. The sacrificial concrete is prepared from the following components in parts by weight: 600 to 700 parts of cement, 250 to 350 parts of superfine fly ash, 100 to 150 parts of silica fume, 900 to 1100 parts of quartz sand, 70 to 120 parts of barium ferrite, 140 to 170 parts of steel fiber, 4 to 20 parts of sisal fiber, 193 to 213 parts of water and 15 to 20 parts of water reducing agent. The preparation method comprises the following steps: sequentially mixing and stirring the raw materials, pouring, forming and curing. The sacrificial concrete disclosed by the invention has good sacrificial property, and the water content of raw materials is lower than 5%, so that the hydrogen yield in the interaction process of a reactor core melt and a sacrificial material is reduced; and the sisal hemp is heated to form gaps and channels, so that the high-temperature bursting resistance is improved.

The aerosol generating article (10)(100)(1000) comprises an aerosol generating substrate (12)(112)(1004) and a downstream element (42)(150)(1008) provided downstream of the aerosol generating substrate (12)(112)(1004) and axially aligned with the aerosol generating substrate, the downstream element comprising a cellulosic filtration material. The fibrous material comprises a plurality of regenerated cellulose fibers selected from one or more of viscose fibers, modal fibers, lyocell fibers, and viscose rayon fibers, or a plurality of natural fibers selected from one or more of flax fibers, hemp fibers, jute fibers, kenaf fibers, ramie fibers, abaca fibers, phormium fibers, sisal fibers, coir fibers, cotton fibers, and kapok fibers. The cellulosic fibrous material further comprises an additive coating applied to multiple regenerated cellulose or natural fibers, the additive coating containing at least 5% by weight of exogenous lignin on a dry weight basis.

The invention relates to the technical field of adhesives, and discloses a high-strength impact-resistant acrylic foam adhesive tape and a preparation method thereof.The acrylic foam adhesive tape comprises an acrylic foam adhesive layer and a release layer, the acrylic foam adhesive layer is prepared by taking acrylate polymerization emulsion as a main raw material and mixing rosin resin, a foaming agent and the like; the acrylate polymerized emulsion has a shell-core structure, a shell layer is cross-linked acrylate, a core layer is sisal fiber, the existence of the sisal fiber enables the finally prepared foam tape to have the characteristic of high strength, the existence of a cross-linked modifier enables the molecular chain density of the acrylate polymerized emulsion to be improved, and the impact performance of the tape is enhanced. And the cross-linked modified body structure also contains rigid heterocyclic rings and active hydroxyl substituent groups, so that the impact resistance and the adhesive property of the adhesive tape can be improved.

The invention relates to the technical field of environment-friendly coatings, in particular to an environment-friendly coating based on a plant material and a preparation method of the environment-friendly coating. The environment-friendly coating comprises the following raw materials in parts by weight: 25-40 parts of a plant composition, 20-30 parts of waterborne epoxy ester resin, 10-20 parts of deionized water, 3-8 parts of radix puerariae residues, 5-10 parts of diatomite, 2-5 parts of bentonite, 1-3 parts of a thickening agent, 0.5-2 parts of a dispersing agent and 0.5-2 parts of a defoaming agent. According to the invention, the rich pore structure of the lotus seedpod charcoal powder and the fiber form of the sisal fibers are interwoven with each other, a stable three-dimensional network is constructed in a paint film, and paint film cracking caused by local stress concentration is avoided; meanwhile, the porous characteristic of the resin is cooperated with inorganic fillers such as diatomite and bentonite, the compactness of a paint film is enhanced, the film-forming property of the resin is optimized by the pomelo peel extract powder, the adhesive force of the paint film and a base material is enhanced, the overall flexibility of the paint is improved, and the service life is prolonged.

The invention relates to the technical field of fiber material drying, in particular to an intelligent drying machine for fiber material production, which comprises an electric roller, a conveying belt, a connecting plate, a sliding block, a conveying assembly and a second driving assembly, at least one electric roller is mounted on the shell I; a conveying belt is wound among all the electric rollers; a plurality of holes are formed in the conveying belt; a plurality of plate groups are connected to the conveying belt; each plate group consists of two connecting plates; a plurality of sliding blocks are connected to each connecting plate in a sliding manner; the upper end of the sliding block is in a sharp corner shape. The sliding block can move in the hole of the conveying belt; the sisal fibers are fixed through the sliding blocks, the problem of disordered arrangement caused by pulling fibers behind the sisal fibers when the sisal fibers are taken out is solved, it is ensured that the subsequent sorting and collecting procedures are conducted in order, meanwhile, the sliding blocks are also used for pulling sisal fiber layers out of the gaps, hot air can flow through the gaps to dry the sisal fibers, and the sisal fibers are dried. And the drying effect is improved.

The utility model discloses a sleeping and catching dual-purpose imitated corrugated cat scratching board, which relates to the field of pet supplies and comprises a cat scratching board body, winding parts are arranged on two sides of the cat scratching board body, the winding parts are sewn with the bottom of the cat scratching board body, a base is arranged at the bottom of the cat scratching board body, and connecting pieces are arranged in the winding parts. Corresponding threaded holes are formed in the front side and the rear side of the connecting piece and the front side and the rear side of the base, and bolts are connected into the threaded holes. According to the cat scratching plate, the first scratching-resistant layer and the second scratching-resistant layer are arranged on the two faces of the cat scratching plate body, after the first scratching-resistant layer is damaged in use, the second scratching-resistant layer can be used by turning over the cat scratching plate body, and therefore the purpose that the two faces can be scratched is achieved, and the cost for replacing the cat scratching plate body is reduced; according to the cat scratch board, the first scratch-resistant layer and the second scratch-resistant layer which are formed by weaving the sisal fibers are adopted, so that the cat scratch board body can be effectively prevented from being damaged, no paper scraps are generated, and the service life of the cat scratch board body is prolonged.

The invention provides composite expansive soil containing microorganisms-sisal fibers. The composite expansive soil comprises the sisal fibers, expansive soil, a bacillus pasteurii solution and a cementing solution. Wherein the mass part ratio of the bacillus pasteurii liquid to the cementing liquid is 3: (2-6); the mass part of the sisal fiber is 0.4-1.0; the concentration of the cementing liquid is 1.0 to 3.0 mol / L; the cementing liquid comprises the following components in parts by mass: 1 part of urea and 1-6 parts of calcium chloride. The composite expansive soil provided by the invention is improved by adopting a means of combining a microbe induced carbonate precipitation technology and fiber reinforcement, and the advantage complementation of microbe mineralization and physical reinforcement can be realized. The invention further provides a preparation method of the composite expansive soil containing the microorganisms-sisal fibers.

The invention relates to the technical field of butyronitrile gloves, and discloses a high-cleanliness wear-resistant anti-skid butyronitrile glove and a production process thereof.The butyronitrile glove is prepared by the steps that carboxyl butyronitrile latex serves as a base material, a wear-resistant functional additive and the like serve as auxiliary materials, slurry is prepared, then a glove model is soaked in the slurry for sizing, and finally the high-temperature vulcanization process is conducted, so that the high-cleanliness wear-resistant anti-skid butyronitrile glove is obtained. Wherein the wear-resistant functional additive is prepared by immobilizing a carbon nanotube on the surface of sisal fiber by using a macromolecular substance with an alternating structure as a connecting material, and the macromolecular substance structure contains a large number of silicon-oxygen bonds, so that a super-hydrophobic layer can be formed on the surface of the glove, and the glove is endowed with a self-cleaning effect; and the macromolecular substances can improve the compatibility between the sisal fibers and the carbon nanotubes and the glove base material, so that the antistatic performance of the glove is improved, and the glove has a high-cleanliness effect. In addition, after the carbon nanotubes are immobilized on the surfaces of the sisal fibers, a'ball 'effect can be formed, so that the wear resistance of the butyronitrile gloves is improved.

This invention relates to the field of decorative materials technology, specifically providing a PVC composite decorative panel made from sisal fiber, comprising the following raw materials in parts by weight: 90-100 parts PVC resin, 1-20 parts epoxidized soybean oil, 15-20 parts coupling agent-modified heavy calcium carbonate, 5-10 parts ionic liquid-modified light calcium carbonate, 10-35 parts ionic liquid-modified sisal fiber, 0.2-3 parts foaming agent, 0.1-1.2 parts internal lubricant, 0.1-1.2 parts external lubricant, 1-6 parts flame retardant, 0.1-1 part first coupling agent, and 0-0.5 parts heat stabilizer. This invention effectively solves the problem of deteriorated material mechanical properties caused by inorganic fillers.

The invention relates to the technical field of adhesives, and discloses sisal hemp polishing wheel sizing glue and a preparation method thereof.The sisal hemp polishing wheel sizing glue is formed by compounding vinyl acetate-acrylic emulsion, silica sol, ethylene-vinyl acetate copolymer emulsion and a thickening agent according to a specific formula, the vinyl acetate-acrylic emulsion is prepared from deionized water, vinyl acetate, butyl acrylate, methyl methacrylate, acrylic acid, a functional monomer, a compound emulsifier and a redox initiation system through a specific pre-emulsification-step dropwise adding process. According to the invention, a functional monomer is introduced to participate in copolymerization, and chemical bridging of a polymer and sisal fibers is constructed; a Si-O-Si inorganic network is formed by compounding silica sol, and the Si-O-Si inorganic network and an organic polymer chain generate strong hydrogen-bond interaction; by adding the VAE emulsion, the flexibility of an adhesive film and the wettability to plant fibers are improved, and the three components cooperate to form a stable interpenetrating network structure, so that the technical problems that the traditional sizing adhesive is poor in temperature resistance, insufficient in wear resistance and difficult to give consideration to both environmental friendliness and performance are solved.

The invention belongs to the technical field of materials, and particularly relates to a flame-retardant high-strength polypropylene composite material and a preparation method thereof.The composite material is prepared by taking polypropylene as a base material and taking a compatilizer, an elastomer, a flame-retardant reinforcing additive and the like as additives through mixing and extrusion processes. Wherein the flame-retardant reinforced additive is prepared by modifying a macromolecular modifier with a phosphaphenanthrene-phenyl sulfone alternate connection structure on the surface of the sisal fiber, and the macromolecular modifier can act with a compatilizer in a melt extrusion process to improve the compatibility between the sisal fiber and polypropylene, so that the flame-retardant performance of the sisal fiber is improved. A micro cross-linked network is formed at the joint of the sisal fiber and the polypropylene, and a mortise and tenon joint type connecting structure is generated, so that the effect of greatly improving the mechanical strength of the material by adding a small amount of the material is achieved. In addition, the structure of the macromolecular modifier also contains a large number of flame-retardant elements, so that the flame-retardant property of the material can be effectively enhanced.

The invention relates to the technical field of paper-plastic composite bags and discloses a waterproof and wear-resistant paper-plastic composite bag and a preparation method thereof. The invention controls the amount of catalyst added and the amount of dodecene added in the preparation process of long-chain alkyl hydrogenated silicone oil to prepare high-hydrogen-containing long-chain alkyl hydrogenated silicone oil, and adds the oil to trimethylolpropane triacrylate to prepare modified silicone oil; controls the amount of four acrylic monomers added, namely, methyl methacrylate, isooctyl acrylate, hydroxyethyl acrylate, and glycidyl methacrylate, to prepare high melt index polyacrylate and low melt index polyacrylate, which are melt-blended with sisal fiber-modified nano-alumina to prepare a polyacrylate film; and finally, hot-pressed with kraft paper to prepare a waterproof and wear-resistant paper-plastic composite bag.

The utility model relates to the technical field of maternal and child products, in particular to a moisture absorption object capable of preventing displacement and side leakage, a protection pad, a sanitary towel and menstrual period trousers, which comprises a high-molecular water-absorbent resin layer and a fluff pulp layer coated outside the high-molecular water-absorbent resin layer, an opening is integrally formed in the upper surface of the fluff pulp layer, a deformation groove integrally formed with the high-molecular water-absorbent resin layer is formed below the opening, a weak groove is further integrally formed in the position, corresponding to the deformation groove, of the lower surface of the fluff pulp layer, and side guardrails made of sisal fiber materials are arranged on the two sides of the upper surface of the fluff pulp layer. When the clothes penetrate through the moisture absorption object, the upper surface of the moisture absorption object is turned upwards along the deformation grooves to expand through extrusion force of the clothes on the moisture absorption object, and liquid flowing out towards the two sides is absorbed through the side guardrails.

The utility model discloses sisal combing equipment, which relates to the technical field of sisal fiber processing and comprises a first support, a conveyor belt rotatably mounted at the top of the first support, a spray header fixedly mounted at the top of the first support, a second support fixedly mounted on one side of the first support, and a third support fixedly mounted on one side of the second support. And a first motor is fixedly mounted on one side of the first bracket. Compared with the prior art, the device has the advantages that by arranging the rubbing assembly, the rubbing plate is driven to rub the sisal fibers in a crankshaft connecting rod mode, so that the sisal fibers can be more easily subjected to sisal residue removal and carding, and by arranging the combing assembly, a second connecting rod, a third connecting rod and the combing plate form a double-rocker mechanism; and the combing plate combs back and forth from bottom to top under the rotation of the second connecting rod, so that the damage and breakage of the sisal fibers caused by striking and collision are reduced, the toughness of the sisal fibers is better, and the quality of the sisal fibers is improved.

The invention discloses sisal fiber-based fluorescent carbon dots and a preparation method and application thereof in dye adsorption, and the preparation method comprises the following steps: step 1, adding sisal fibers into a mixed solution composed of sodium hypochlorite, TEMPO, sodium bromide and deionized water, adjusting the pH value to 9-10, reacting at room temperature for 4 hours, then quenching the reaction with ethanol, washing the obtained mixture with tap water to neutralize, and drying to obtain sisal fiber-based fluorescent carbon dots; washing with deionized water, and drying to obtain carboxylated sisal fiber; step 2, taking the carboxylated sisal fibers as a carbon source, adding polyethyleneimine as a nitrogen source, and performing microwave treatment to obtain the sisal fiber-based fluorescent carbon dots. According to the invention, CDs are grown on SF in situ by a simple microwave method, the SF-N-CDs material with high strength, rich functional groups on the surface and high pore structure is obtained, and the adsorption capacity of the SF-N-CDs material on methyl blue dye can be remarkably improved.

The application relates to the papermaking technical field and particularly relates to a food waterproof and oil-proof paper and a preparation method thereof, which is composed of a base paper and a coating layer covering the surface of the base paper; the base paper comprises the following preparation raw materials: sisal fiber, polylactic acid fiber, water glass, nano silicon dioxide, starch and polyacrylamide; the coating layer is prepared by coating a coating liquid on the surface of the base paper and then drying and calendering to obtain the coating layer; the coating liquid comprises the following preparation raw materials: modified fucoidan, polybutylene succinate, modified nano cellulose, sorbitol, polyaluminum silicate sulfate, polyvinyl alcohol, sodium thiosulfate and water. The food waterproof and oil-proof paper has the advantages that the waterproof and oil-proof properties are improved, the food preservation effect is improved, and the food has certain antibacterial property and strength.

The invention provides a method for manufacturing a filter tip fragrant thread by using sisal fibers. The method comprises the following steps: (1) pretreating the sisal fibers to form a core thread; (2) preparing a modified solution by using nano silicon dioxide; (3) soaking the core wire in the modification liquid, performing ultrasonic oscillation, and drying to obtain the core wire after preliminary modification treatment; (4) spraying or dip-coating tobacco essence or tobacco balsam on the core wire subjected to the primary modification treatment, and drying to obtain the core wire subjected to fragrance preparation; and (5) soaking the core wire subjected to fragrance preparation into the modification liquid, taking out the core wire after soaking is completed, drying and twisting to obtain the filter tip fragrant wire. The sisal hemp short fibers are applied to the tobacco industry with high added value, and sustainable development of the sisal hemp industry is facilitated.