67 results about "Sisal fiber" patented technology

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 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 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 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 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.

The invention provides high-frequency foundation pier self-compacting concrete as well as a preparation method and application thereof. The concrete comprises a cementing material system, an aggregate system, a functional additive, a fiber reinforced system and a self-repairing component. Wherein the steel fibers are mixed with the sisal fibers subjected to plasma grafting treatment, so that the crack resistance is improved; the diatomite microcapsule loaded with bacillus is used as a self-repairing component to realize the self-healing of the crack. During preparation, the self-compactness and compactness of a concrete mixture are ensured through a step-by-step stirring and high-frequency vibration process. Through fiber modification treatment, a microcapsule self-repairing technology and process optimization, the concrete has low yield stress and high plastic viscosity, the crack resistance and durability in a high-frequency vibration environment are remarkably improved, the crack healing rate can reach 50%, and the concrete is suitable for high-frequency foundation pier construction of bridges, wind power, nuclear power and the like and has good engineering application value.

The invention relates to a use method of elastic gel particles, and belongs to the technical field of expansion plugging agents, the use method of the elastic gel particles comprises the following steps: preparation of a first tank: adding 27-28m < 3 > of clear water into a slurry preparation tank, and starting a stirrer; the plugging slurry is prepared through double tanks, the pumping pressure of a slurry pump is effectively controlled, the existing leakage amount is reduced to the lowest percentage of the initial leakage amount, and due to cooperative plugging of bentonite, elastic gel particles, a composite plugging agent and cottonseed hulls, the situation that single gel or rigid particles are prone to being diluted is avoided, and the effect of improving the success rate of large leakage plugging is achieved; by means of a heat conduction rapid balancing agent prepared from modified boron nitride nanosheets, sisal fibers, heat conduction ceramic fragments and an anti-deformation agent, the effect of rapidly conducting heat in the elastic gel particles is achieved, so that the maximum expansion speed of the elastic gel particles is obtained within a short time, and rapid plugging of a crack leakage layer is facilitated.

This invention discloses a steel wire strand and natural fiber composite rope for submarine cable laying and its manufacturing method, relating to the field of equipment for submarine cable construction. The rope comprises: high-strength steel wire compacted strands, a PVC plastic sheath, and natural sisal fiber strands. The PVC plastic sheath covers the outer surface of the high-strength steel wire compacted strands, and the natural sisal fiber strands are twisted onto the outer surface of the PVC plastic sheath. The high-strength steel wire compacted strands, PVC plastic sheath, and natural sisal fiber strands form a base rope. Multiple base ropes are twisted to form sub-ropes, and multiple sub-ropes are twisted to form the steel wire strand and natural fiber composite rope. Using high-strength compacted steel wire strands as the main strength component, it has higher metal density, structural strength, and load-bearing capacity compared to ordinary steel wire ropes. The outer surface of the high-strength compacted steel wire strands is sequentially provided with a PVC plastic sheath and natural sisal fiber strands, which simultaneously provides the advantages of high friction for easy gripping and low weight.

The present application relates to the technical field of fiber material drying, and particularly relates to an intelligent drying machine for fiber material production, which comprises electric rollers, a conveying belt, connecting plates, sliding blocks, a conveying assembly and a second driving assembly; at least one electric roller is installed on the upper shell; the conveying belt is arranged around 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 comprises two connecting plates; a plurality of sliding blocks are slidably connected to each connecting plate; the upper end of each sliding block is in the shape of a sharp corner; the sliding blocks can move in the holes of the conveying belt; the sliding blocks are used for fixing the sisal fibers, so that the fibers behind the sisal fibers are prevented from being pulled and arranged in disorder when the sisal fibers are taken out, the orderly performance of the subsequent sorting and collecting process is ensured, meanwhile, the sliding blocks are also used for pushing the sisal fiber layer out of the gap, so that hot air can flow through the gap to dry the sisal fibers, and the drying effect is improved.

The application relates to the adhesive technical field and discloses a sisal polishing wheel setting adhesive and a preparation method thereof, wherein the sisal polishing wheel setting adhesive is prepared by compounding a specific formula of vinyl-acrylic emulsion, silica sol, ethylene-vinyl acetate copolymer emulsion and a thickening agent; the vinyl-acrylic emulsion is prepared by deionized water, vinyl acetate, butyl acrylate, methyl methacrylate, acrylic acid, a functional monomer, a composite emulsifier and an oxidation-reduction initiation system through a specific pre-emulsification-step-by-step dropping process. The functional monomer is introduced to participate in copolymerization, a chemical bridge between a polymer and sisal fibers is constructed, the composite silica sol forms a Si-O-Si inorganic network and produces strong hydrogen bond action with the organic polymer chain, the VAE emulsion is added to improve the flexibility of the adhesive film and the wettability of the plant fibers, the three are synergistic, a stable interpenetrating network structure is formed, and the technical problems that the traditional setting adhesive is poor in temperature resistance, insufficient in wear resistance, difficult to consider environmental protection and performance at the same time are solved.

The utility model discloses a high-efficiency sisal fiber decorticator which comprises a decorticator body, and a feeding groove is formed in one side of the decorticator body. The plurality of rotating rods are rotationally mounted in the decorticating machine body; the plurality of decorticating rollers are fixedly connected to one ends of the plurality of rotating rods in a sleeving manner respectively; the conveying mechanism is arranged on one side of the decorticator body, and the conveying mechanism is used for conveying fibers; a feeding hole is fixedly formed in one side, close to the feeding groove, of the decorticating machine body, and one end of the feeding hole penetrates out of the feeding groove; the conveying mechanism is arranged on one side of the decorticating machine body, fibers in sisal are decorticated through the decorticating roller, the decorticated fibers fall onto the surface of the conveying belt when passing through the limiting plate, the transmission rod is driven by the second driving motor to rotate, the conveying belt is driven by rotation of the transmission rod to rotate, and then the fibers are conveyed into the storage box to be collected. Mixing of fibers and sisal hemp residues is avoided, and the decorticating efficiency is improved.

The invention relates to solid-waste-based cementing material synergistic fiber solidified soil and a preparation method thereof. The solid-waste-based cementing material synergistic fiber solidified soil is prepared from wet soil, a solid-waste-based cementing material, sisal fibers, water and anhydrous sodium sulfate, the moisture content of the wet soil is the optimal moisture content of the soil; the mass mixing amounts of the solid waste-based cementing material, the sisal fiber, the water and the anhydrous sodium sulfate are respectively 10%, 0.6%, 4.5% and 0.3% of the dry soil; the preparation method comprises the following steps: drying, crushing and screening the undisturbed soil; wet soil is prepared according to the optimal water content; cleaning the sisal fibers, naturally drying the sisal fibers to constant weight, and then immersing the sisal fibers in a NaOH solution; wrapping the sisal fibers with a solid waste-based cementing material; sequentially adding the sisal fibers, the solid waste-based cementing material and the anhydrous sodium sulfate into the wet soil, and mixing; weighing water and adding the water into the mixture to obtain a mixture; according to the technical scheme, the overall mechanical property of the solidified soil can be remarkably improved.

The invention discloses a bio-based flame-retardant conveyor belt and a preparation method thereof. The bio-based flame-retardant conveyor belt is prepared from the following raw materials: 18-22% of sisal fibers, 12-15% of nano cellulose whiskers (with the diameter of 20-50nm), 35-40% of a PLA / PBAT blend, 4-6% of acetyl tributyl citrate, 3-5% of phytic acid ionic liquid and 12.5-16% of a functional additive. Through the synergistic enhancement of the sisal fibers and the nanocellulose whiskers, the efficient flame retardance of the phytic acid ionic liquid and the compounding effect of the functional aids, the product has excellent flame retardance, mechanical strength and ultraviolet aging resistance, and is particularly suitable for severe working condition environments such as mines and metallurgy.

The present invention belongs to the technical field of concrete, and specifically relates to a high-strength composite fiber expansion crack-resistant agent reinforced concrete, its preparation method and application. The concrete comprises the following components in parts by weight: 400-450 parts of sulfoaluminate cement, 200-250 parts of fly ash, 600-650 parts of sand, 900-950 parts of crushed stone, 10-15 parts of expansion agent, 3-7 parts of water reducing agent, 1-2 parts of defoaming agent, 200-250 parts of water, 6-10 parts of sisal fiber, 6-10 parts of flat glass fiber, and 2-4 parts of whiskers. The composite fiber expansion crack-resistant agent of the present invention can improve the crack resistance of concrete from both physical and chemical aspects, providing double protection for concrete. On the one hand, a large number of organic and inorganic fibers play a role in micro reinforcement and network support, inhibiting the cracking process of concrete; on the other hand, the expansion component reacts with the hydration products of cement and generates moderate expansion, which can prevent the shrinkage cracking of concrete, improve the crack resistance of concrete, and increase the compressive and flexural strengths of concrete.

The invention discloses a high-performance acoustic vibrating diaphragm based on modified biomass fibers and a preparation method and application of the high-performance acoustic vibrating diaphragm in the technical field of electroacoustic conversion devices, and the acoustic vibrating diaphragm is prepared from the following raw materials in parts by mass: 40-60 parts of a polymer matrix, 25-40 parts of modified biomass fibers, 3-8 parts of carbon nanotubes, 3-8 parts of a compatilizer, 0.8-3 parts of a dispersing agent and 0.3-1.5 parts of an antioxidant; the modified biomass fibers are at least one of modified wool fibers, modified cotton fibers, modified ramie fibers or modified sisal fibers, and the modified biomass fibers are obtained by modifying chopped biomass fibers with a silane coupling agent, immersing the modified biomass fibers in a siloxane solution and performing heat treatment with acid steam. Through raw material modification process optimization and biomass fiber selection, accurate balance of Young modulus, loss factors and density is realized, and the bottleneck that parameters of an existing vibrating diaphragm are difficult to consider is thoroughly solved.