994 results about "Basalt fiber" patented technology

The invention discloses fiber reinforced concrete for bridge deck pavement and a preparation method thereof, and belongs to the technical field of concrete. The fiber reinforced concrete is prepared from the following raw materials: Portland cement, modified basalt fiber, a slow-release mineralizer, a stress-oriented dispersing aid and the like. The modified basalt fiber is a basalt fiber which is subjected to amino silanization through a silane coupling agent KH-550 and then is catalytically grafted with ethylenediamine tetraacetic acid and hydroxyethyl methylacrylate through DCC (dicyclohexylcarbodiimide); the slow-release mineralizer comprises calcium sulphoaluminate and silicon-based coated nano calcium sulfate; the silicon-based coated nano calcium sulfate is core-shell structure powder formed by coating a nano calcium sulfate core material with a silicon dioxide shell layer; the concrete is strong in interface bonding, excellent in dynamic fatigue resistance, good in durability and stable in volume, and the problem that the mechanical property, the durability and the dynamic anti-interference capability of the concrete cannot be considered at the same time is solved.

The invention belongs to the technical field of cement pole materials, and particularly relates to a high-strength cement pole material and a preparation method thereof. The high-strength cement pole material is prepared from the following components in parts by weight: 450 to 500 parts of cement, 60 to 80 parts of fly ash, 500 to 550 parts of fine aggregate, 800 to 1000 parts of coarse aggregate, 80 to 120 parts of slag powder, 30 to 50 parts of composite fiber, 5 to 10 parts of redispersible latex powder, 2 to 6 parts of water reducing agent and 100 to 150 parts of water, the composite fibers comprise modified basalt fibers and polypropylene reticular fibers. According to the high-strength cement pole material provided by the invention, the polypropylene reticular fibers and the specific modified basalt fibers act together, so that the cement pole material has high compressive strength and high breaking strength, and a cement pole prepared from the cement pole material has high flexural capacity.

The invention discloses solid waste-based fiber reinforced sprayed concrete and a preparation method thereof, and belongs to the technical field of concrete. The sprayed concrete is prepared from the solid waste-based cementing material, the fine aggregate, the basalt fiber, the water reducing agent, the accelerator and the water, the slag, the carbide slag, the fly ash and the cement serve as the solid waste-based cementing material, part of the cement is replaced by the fly ash and the slag, the slag can make up for the deficiency of the activity of the fly ash in the early stage, the early strength is rapidly improved, and the early strength is improved. The rebound rate is reduced; the fly ash further densifies the matrix in the later period by means of continuous pozzolanic reaction, so that the durability is enhanced; the basalt fibers, the accelerator and the water reducing agent are mixed, the hydration process is optimized, and the synergistic enhancement effect of the fibers and a matrix is achieved, so that the generation of early cracks and the development of later cracks are inhibited, and finally the sprayed concrete with high strength, high toughness and low shrinkage is obtained.

The invention discloses an industrial high-temperature-resistant cable, and belongs to the technical field of cables. The cable comprises a cable core and a sheath layer wrapping the cable core. The sheath layer comprises the following components in parts by weight: 32-38 parts of alkenyl polyvinyl chloride, 38-42 parts of methyl vinyl silicone rubber, 15-20 parts of modified basalt fibers, 1-2 parts of a vulcanizing agent, 6-10 parts of a plasticizer, 1-2 parts of a lubricant, 1-2 parts of a stabilizer and 0.3-0.8 part of an antioxidant. Functional modification is performed on the surface of the basalt fiber, so that the basalt fiber and a polymer matrix of the cable sheath can form a multi-layer and firm chemical structure, and the comprehensive performance of the sheath material is effectively improved.

The invention relates to the technical field of thermal insulation materials, in particular to an aerogel felt and a preparation method thereof.The aerogel felt is composed of a composite fiber base material and multi-component aerogel loaded in the composite fiber base material, the composite fiber base material comprises 65%-75% of alkali-free glass fibers, 15%-20% of modified polyimide fibers, 4%-6% of nanoscale carbon fibers and 8%-12% of basalt fibers, and the multi-component aerogel is loaded in the composite fiber base material. According to the multi-component aerogel, 78%-82% of tetraethoxysilane, 12%-14% of methyltrimethoxysilane, 4%-6% of dimethyldimethoxysilane and 2%-4% of vinyltrimethoxysilane serve as precursors, 1.5%-2.5% of aluminum oxide, 0.8%-1.5% of titanium oxide nanoparticles and 3%-4% of zinc borate are added, a multi-stage reinforced structure is formed, the mechanical property and flexibility of the aerogel felt are remarkably improved, the tensile strength reaches 400 kPa or above, and the tensile strength reaches 400 kPa or above. The flexibility is excellent.

The invention belongs to the technical field of building materials, and particularly relates to a micro-expansion anti-cracking waterproof composite deep groove filler and a preparation method thereof. The micro-bulking anti-cracking waterproof composite deep groove filler provided by the invention comprises cement, gypsum, mineral powder, nano silicon oxide, coarse aggregate, fine aggregate, modified fibers, an expanding agent, a polycarboxylate superplasticizer and water. According to the invention, polyacrylamide, calcium sulphoaluminate and magnesium oxide are adopted to jointly form an expanding agent, and early-stage-late-stage full-period shrinkage compensation is jointly formed in a concrete hydration process, so that the density of the concrete is effectively improved, and the waterproof performance of the concrete is further improved; according to the invention, sodium dodecyl benzene sulfonate and propylene glycol block polyether are adopted to carry out compound modification on graphene oxide, and gamma-aminopropyltriethoxysilane is connected to the surface of basalt fiber, so that the bonding strength of basalt fiber and a cement matrix and the compactness of the cement matrix are improved, and the waterproof and anti-cracking properties of concrete are further improved.

The invention relates to the technical field of basalt fiber reinforced composite material pipelines and preparation methods thereof, and discloses a pipeline named as a basalt fiber reinforced composite material pipeline and a preparation method thereof and a preparation method thereof. The invention aims to overcome the defects of continuity, interface bonding and mechanical properties of the conventional basalt fiber reinforced composite material pipeline. The pipeline is composed of a lining layer, a basalt fiber winding reinforcing layer and an outer protective layer, the reinforcing layer is formed by compounding basalt fiber bundles subjected to surface treatment and a resin matrix, and the reinforcing layer is of a multi-layer structure with different winding angles. The preparation method comprises the following steps: roughening the inner lining layer, infiltrating and accurately winding the fiber bundles, performing multi-section curing and forming the outer protective layer. According to the scheme, the macroscopic mechanical property of the pipeline is remarkably improved, the interface combination of fibers and a matrix is optimized, the integrity of the fibers is kept, efficient preparation is achieved, and the pipeline has the advantages of being excellent in corrosion resistance and ultraviolet resistance, long in service life and the like.

The invention discloses a basalt fiber reinforced ceramic tile binder and a preparation method thereof, and belongs to the technical field of ceramic tile binders. The basalt fiber reinforced ceramic tile binder is prepared from the following raw materials in parts by weight: 30 to 35 parts of cement, 40 to 50 parts of quartz sand, 1 to 2 parts of basalt fiber, 5 to 8 parts of calcium formate, 1 to 3 parts of redispersible latex powder, 1 to 1.5 parts of organic silicon modified polyurethane and 0.2 to 0.5 part of cellulose ether. The basalt fiber reinforced ceramic tile binder prepared by the invention has the advantages of relatively low slippage distance, good tensile bonding strength, water resistance, high temperature resistance and freeze thawing resistance stability.

The invention relates to a basalt reinforced high-density polyethylene composite material as well as a preparation method and application thereof. The basalt reinforced high-density polyethylene composite material comprises high-density polyethylene, a modified basalt reinforced filler and a compatibilizer, the basalt reinforced filler comprises modified basalt fibers and modified basalt scales. The modified basalt fibers and the modified basalt scales are added into the high-density polyethylene, the modified basalt fibers construct a three-dimensional supporting network to bear main loads, and the sheet structures of the modified basalt scales can prevent the material from deforming in the two-dimensional direction; the basalt reinforced high-density polyethylene composite material and the preparation method thereof have the advantages that the mechanical strength of the basalt reinforced high-density polyethylene composite material is enhanced synergistically, the prepared basalt reinforced high-density polyethylene composite material has the advantages of excellent mechanical strength, good wear resistance and corrosion resistance and the like, and the long-term use requirement of the material in a sea wave high-frequency friction environment is met.

The invention relates to the field of composite materials, in particular to a preparation method of a basalt fiber hybrid woven impact-resistant high-bearing composite material. The basalt main fibers and the auxiliary reinforcing fibers are pre-mixed, carded and woven in a three-dimensional mode, in a constructed prefabricated body framework, the auxiliary reinforcing fibers cooperate with the basalt main fibers, the bearing stress is dispersed, the stretching and shearing effects under the impact load are resisted, the fracture resistance and deformation resistance of a prefabricated part are improved, the structural stability is enhanced, and the service life of the prefabricated part is prolonged. After impregnation and hot press molding, the advantages of the basalt fiber hybrid braided structure can be fully played, and the composite material is endowed with excellent impact resistance and high bearing performance.

The invention belongs to the technical field of continuous basalt fiber impregnating compounds, and particularly relates to an impregnating compound of a modified basalt fiber reinforced nylon composite material as well as a preparation method and application of the impregnating compound. The impregnating compound comprises the following effective components in percentage by mass: 70%-90% of a film-forming agent, 4.0%-8.0% of an organosilane coupling agent, 0.1%-1.5% of a lubricating agent, 1.0%-10% of a dispersing agent, 0.1%-1.0% of a wetting agent and 3%-10% of nano particle oxide. Related tests verify that the ablated basalt fiber which is not effectively treated is smooth in surface, and the nylon composite material reinforced by the ablated basalt fiber is in a state that the fiber is loosely bonded with a resin matrix and the surface is clean after the fiber is pulled out at a fracture interface, which shows that the interface bonding force is extremely weak and the stress transmission efficiency is low. Compared with the prior art, the basalt fiber treated by the nano ZnO modified impregnating compound provided by the invention has the advantages that the section form of a reinforced composite material is fundamentally improved: the fiber and resin interface bonding is very tight, and the fiber surface is coated by a large amount of resin, so that the obvious improvement of the interface bonding strength is clearly revealed.

The invention relates to the technical field of fiber reinforced composite materials, in particular to a basalt fiber reinforced composite board in a dynamic heavy load environment and a preparation method. The basalt fiber reinforced composite board comprises an upper surface layer, an upper reinforcing layer, a core layer, a lower reinforcing layer and a lower surface layer. According to the invention, rigid nanoparticles and carboxyl-terminated nitrile rubber are introduced to construct a rigid-flexible composite toughening system, and nano aluminum oxide and silicon dioxide are taken as rigid particles and are uniformly dispersed in an epoxy cross-linked network, so that slippage and crack propagation of molecular chains can be effectively hindered, and the rigidity and damage resistance of a matrix are improved; meanwhile, the carboxyl-terminated nitrile rubber is used as reactive liquid rubber, after carboxyl of the carboxyl-terminated nitrile rubber reacts with epoxy groups, the carboxyl-terminated nitrile rubber is distributed in a matrix in a sea-island structure and can serve as stress concentration points, a large amount of crazing and shear bands can be induced, and a large amount of impact energy can be consumed; and the impact toughness is greatly improved while the high strength of the material is maintained.

The invention belongs to the technical field of asphalt, and particularly relates to modified asphalt and a preparation method and application thereof.The modified asphalt comprises matrix asphalt and a modified asphalt additive, the modified asphalt additive comprises rubber powder, basalt fibers and lignin fibers, and the adding amount of the rubber powder is 24.3%, the adding amount of the basalt fibers is 0.32%, and the adding amount of the lignin fibers is 0.08%. According to the method, statistical analysis, prediction model development and numerical optimization are carried out by utilizing a response surface method (RSM), a formula capable of enabling the softening point to reach the maximum value is determined within the range of 15%-25% of rubber powder mixing amount, 0-0.4% of basalt fiber and 0-0.4% of lignin fiber content, a scientific basis is provided for actual production, and the quality and production efficiency of the modified asphalt are improved.

The invention discloses basalt fiber reinforced low-carbon environment-friendly asphalt and a construction method of the basalt fiber reinforced low-carbon environment-friendly asphalt on a high and cold road surface, and relates to the technical field of road engineering. The basalt fiber is subjected to ultrasonic treatment by a silane coupling agent KH-550 hydrolysate and dried, and the low-carbon additive is prepared from waste rubber powder and biological asphalt and is matched with an anti-stripping agent; adding biological asphalt, stirring at a high speed, adding basalt fibers in three times, stirring at a high speed, and finally adding an anti-stripping agent to prepare an asphalt composition; adding an asphalt composition for wet mixing, and then adding fibers for continuous mixing to obtain a mixture; after the lower bearing layer is preheated, a crawler-type paver paves at the temperature of 155-165 DEG C, and the speed and the loose paving coefficient are controlled; initial pressing, re-pressing and final pressing are carried out, and a double-steel-wheel and rubber-wheel road roller is used for rolling according to the temperature and the speed; and after compaction, the heat-insulating tarpaulin is covered. The low-temperature crack resistance and freeze-thaw resistance of the basalt fiber reinforced asphalt, the carbon emission reduction of the waste rubber powder and the biological asphalt and the construction quality guarantee through dynamic temperature control and intelligent compaction are realized, and the construction method is adaptive to the alpine regions and meets the requirements of green road construction.

The application relates to the field of chemical-proof fabrics, and particularly discloses a flame-retardant chemical-proof fabric and a preparation process thereof. The flame-retardant chemical-proof fabric comprises, from outside to inside, an outer layer, a bonding layer, a framework layer, a bonding layer and an inner layer which are sequentially contacted, the outer layer is a barrier layer, the inner layer is a barrier layer or an adsorption layer, the framework layer is selected from at least one of a composite fabric of aramid fiber / polyimide fiber, a basalt fiber cloth, a glass fiber cloth, a flame-retardant polyester cloth and a flame-retardant acrylic fiber cloth, the barrier layer is selected from at least one of a PVC / TPU composite film, a PVC film, a PTFE film, a PE film, silicone rubber, fluororubber, butyl rubber, chloroprene rubber and natural rubber, and the adsorption layer comprises a mixed fabric layer formed by nylon fiber and polyester fiber containing an adsorption material. The flame-retardant protective fabric has the advantages of high flame-retardant capacity, good chemical-proof effect, excellent puncture resistance and tensile resistance, can absorb moisture and sweat, and is comfortable to wear.

The invention relates to the technical field of fireproof plates, in particular to a basalt fiber fireproof plate based on a carbon-based protective layer and a preparation method of the basalt fiber fireproof plate, and the basalt fiber fireproof plate comprises the following raw materials in parts by weight: 90-100 parts of epoxy resin, 20-30 parts of a curing agent, 15-25 parts of modified basalt fibers, 10-20 parts of filler, 40-60 parts of a flame retardant, 1-2 parts of a coupling agent and 0.5-1 part of a defoaming agent. According to the preparation method, the basalt fiber is prepared through multi-step reaction of pretreatment, impregnation, pre-oxidation and carbonization, the basalt fiber is impregnated in treatment liquid with polyacrylonitrile as a precursor, polymer molecules are effectively attached, and the interface debonding phenomenon at high temperature is effectively inhibited through subsequent pre-oxidation and carbonization treatment under specific atmosphere and temperature programming; the excellent mechanical property stability of the material is kept in a long-term high-temperature environment.

The invention discloses an alkali-reducing protective agent for a reinforced cement-based cementing material for basalt fibers and application of the alkali-reducing protective agent, and belongs to the technical field of building materials. The alkali-reducing protective agent is prepared from the following raw materials in percentage by weight: 20 to 40 weight percent of active silicon dioxide aerogel, 15 to 30 weight percent of metakaolin, 10 to 25 weight percent of lithium slag powder, 5 to 15 weight percent of nano calcium carbonate, 3 to 8 weight percent of redispersible latex powder, 1 to 5 weight percent of water reducing agent and 0.5 to 2 weight percent of retarder. The invention also discloses an application of the alkali-reducing protective agent in a cement cementing material. According to the invention, the alkalinity of a set cement hole solution around the basalt fiber can be efficiently and enduringly reduced, physical and chemical dual protection barriers are formed on the surface of the basalt fiber, the alkali corrosion of the fiber is obviously delayed, and the long-term durability and enhancement efficiency of the basalt fiber are greatly improved.

The invention discloses polymer-based anti-crack concrete and a preparation method thereof, and relates to the technical field of concrete. When the polymer-based anti-crack concrete is prepared, acrylic acid is grafted on the surfaces of pretreated polypropylene particles to prepare modified polypropylene particles; coating sodium metasilicate with sodium alginate to prepare a self-repairing microcapsule; the preparation method comprises the following steps: hydrolyzing 3-glycidyl ether oxypropyl trimethoxy silane, and grafting the hydrolyzed 3-glycidyl ether oxypropyl trimethoxy silane on the surface of silicon dioxide to prepare modified silicon dioxide; mixing the modified polypropylene particles, basalt fibers and polyacrylonitrile fibers to obtain a solid functional component; cement, slag powder, silica fume, an expanding agent, a solid functional component, modified silicon dioxide, a water reducing agent, an air entraining agent, deionized water, river sand, gravel and the pre-wetted self-repairing microcapsule are mixed, and the polymer-based anti-crack concrete is prepared. The polymer-based anti-crack concrete prepared by the invention has excellent anti-crack, freeze-thaw-resistant and self-repairing properties.

The invention provides a high-shielding-property flame-retardant fire-resistant control cable and a preparation method thereof. The cable sequentially comprises a conductor core wire, a fire-resistant insulating layer, a composite shielding layer and a flame-retardant fire-resistant sheath layer from inside to outside, the invention discloses a preparation method of a traditional Chinese medicine. The flame-retardant fireproof sheath layer is prepared from the following raw materials: 35 to 45 parts of low-smoke halogen-free flame-retardant polyolefin, 15 to 20 parts of ethylene-vinyl acetate copolymer, 8 to 12 parts of polyolefin elastomer, 6 to 10 parts of magnetic montmorillonite-based hybrid electromagnetic shielding filler, 7 to 11 parts of core-shell type ceramic flame-retardant microcapsule, 1.0 to 1.5 parts of silane coupling agent, 2 to 4 parts of basalt fiber and 0.4 to 0.7 part of cross-linking agent. 0.6 to 1.0 part of lubricant, 0.7 to 1.1 parts of stabilizer and 0.3 to 0.6 part of antioxidant. The high-shielding flame-retardant fire-resistant control cable provided by the invention has excellent electromagnetic shielding, flame-retardant and fire-resistant properties, outstanding mechanical strength, good processing fluidity, effective inhibition of thermal degradation and oxidative degradation in high-temperature processing and use processes, and good heat resistance, dimensional stability and use stability.

The invention relates to a nanometer enhanced intelligent monitoring silicone rubber cable and a preparation method thereof, and the cable comprises a conductor unit and a nanometer composite insulating layer which is extruded at the outer side of the conductor unit; the gradient shielding structure is sequentially arranged on the outer side of the nano composite insulating layer in a sleeving mode, the gradient shielding structure, the inner tinned monofilament braid layer and the middle aluminum-plastic composite heat insulation wrapping tape are bonded through a conductive adhesive layer, and fiber bundles of the outer basalt fiber braid layer are embedded into surface grooves of the middle aluminum-plastic composite tape to form a mechanical interlocking structure; the distributed sensing unit is embedded between the middle shielding layer and the outer shielding layer, and the outer sheath layer is extruded on the outer side of the gradient shielding structure. According to the invention, the problems of poor aging resistance, weak shielding and sensing distortion of a traditional cable are solved. The tensile strength retention rate after aging at 150 DEG C is greater than or equal to 85%, the electromagnetic interference attenuation is improved by 14dB, the signal distortion rate during bending is less than or equal to 5%, and the cable is suitable for intelligent monitoring in high-temperature, high-humidity and strong-corrosion environments.

The invention discloses a preparation method of an aerogel laminated composite heat insulation pad, and relates to the technical field of aerogel heat insulation pads, and the preparation method comprises the following steps: mixing and dispersing a silane precursor and absolute ethyl alcohol, adding a basic catalyst, hydrolyzing to generate sol, and aging to form prefabricated sol; adding a flame retardant, a smoke retardant and reinforced fibers, dispersing and gelatinizing, and carrying out supercritical drying to obtain an aerogel block; and coating basalt fiber non-woven fabric with the aerogel slurry to form a base layer, laminating a plurality of layers, and carrying out hot-pressing curing, cooling, post-curing, cutting and edge covering to obtain the composite heat insulation pad. According to the invention, by optimizing the ratio of silane and a drying process, the pore structure and the thermal stability of the aerogel are obviously improved; the flame-retardant, mechanical and heat-insulating properties are improved through multi-component collaborative design, and the obtained heat-insulating pad has the characteristics of low heat conductivity, high strength, excellent flame retardance and light weight, and is suitable for multiple heat-insulating and flame-retardant fields.

The utility model relates to the field of concrete detection platforms, in particular to a basalt fiber concrete crack resistance detection platform which comprises a detection cabinet and supporting legs fixed at the lower end of the detection cabinet, a through groove is formed in the upper end of the detection cabinet in a penetrating mode, and a rotating module for adjusting the angle of concrete is installed in the detection cabinet. To-be-detected concrete is placed at the upper end of the rotating module, a moving module is arranged at the upper end of the detection cabinet, a top plate is installed in the moving module, a first hydraulic cylinder is installed at the lower end of the top plate, and a pressing block for applying pressure to the concrete is installed at the power output end of the first hydraulic cylinder. A rotating shaft is rotatably connected in the first bearing seat, an inclined plate is fixedly connected to the upper end of the rotating shaft, a fan is mounted on the inclined surface of the inclined plate, a rotating assembly is mounted at the upper end of the detection cabinet, and the rotating shaft adjusts the angle of the fan through the rotating assembly; according to the utility model, the solidification process of concrete is accelerated, and the position of the pressing block and the angle of the concrete can be easily adjusted.

The invention belongs to the technical field of asphalt concrete, and relates to modified asphalt concrete for a high-temperature-cold-shock environment and a preparation method of the modified asphalt concrete. The invention provides a preparation method of modified asphalt concrete used in a high temperature-cold shock environment, and the preparation method comprises the following steps: mixing basalt fiber, tannic acid and polyaniline, and stirring at 90-120 DEG C at a rotating speed of 150-300 rpm for 1-3 h to obtain modified basalt fiber; the preparation method comprises the following steps: heating asphalt until the asphalt is softened, adding SBS, and stirring and mixing to prepare SBS modified asphalt; and uniformly mixing the modified basalt fiber, the SBS modified asphalt and aggregate to obtain the modified asphalt concrete. The modified asphalt concrete provided by the invention still keeps relatively excellent mechanical and anti-permeability performances in a high-temperature-cold shock environment, and is suitable for an environment with a large cold and hot temperature difference as hydraulic asphalt concrete.

The invention discloses aerogel thermal-insulation waterproof mortar and a preparation method thereof. The mortar is prepared from cement, hydrophobic aerogel, interface modified asphalt rubber powder, a composite phase change heat conduction material, blast furnace slag micro powder, silica fume, nano montmorillonite, titanium dioxide aerogel powder, expanded vermiculite, shape memory polymer emulsion, chitosan, charcoal powder, carbon fibers, basalt fibers and the like. The preparation method comprises the following steps: carrying out plasma treatment and modification with an organosilicon waterproofing agent to obtain hydrophobic aerogel; carrying out interface modification on the asphalt rubber powder by adopting a titanate coupling agent; a phase change microcapsule-carbon nanotube heat conduction network is constructed through ball milling compounding; a basic framework is formed by adopting a graded mixing process, and then functional components are introduced; and finally, realizing cross-linking curing of the shape memory polymer and the chitosan through ultrasonic assistance and programmed temperature control. The mortar prepared by the invention realizes integration of multiple functions, and effectively solves the technical problems of single performance and poor durability of a traditional thermal insulation material.

The invention discloses a high-flame-retardant plate and a production process thereof, and relates to the technical field of flame-retardant materials. The high-flame-retardant plate is prepared from the following raw materials in parts by weight: 90 to 110 parts of magnesium oxide, 15 to 20 parts of magnesium chloride, 30 to 35 parts of magnesium sulfate, 1.5 to 3 parts of modified polyvinyl alcohol, 1 to 2 parts of starch, 0.3 to 0.8 part of modified borax, 0.2 to 0.5 part of silane coupling agent KH-550, 1 to 2 parts of absolute ethyl alcohol, 2.5 to 3.5 parts of nano zinc borate, 2 to 4 parts of chlorinated paraffin-70, 0.5 to 1 part of nano titanium dioxide, 5 to 10 parts of basalt fiber and 0.2 to 0.5 part of calcium stearate. And 90 to 110 parts of deionized water. The raw materials of the high-flame-retardant plate are subjected to condensation cross-linking and nanometer enhancement of the modified polyvinyl alcohol and esterification and chelation treatment of the modified borax, so that the flame-retardant compatibility is improved. In production, pre-dispersion of the silane coupling agent and synergistic mixing of the starch paste are matched with precise viscosity regulation and control and stepped sanding, so that uniformity of the slurry is ensured. And hot pressing parameters are optimized, so that the plate is high in density and excellent in flame retardance and surface precision.

The invention discloses an Ag / Fe3O4 synergistically modified basalt fiber and PVDF (Polyvinylidene Fluoride) composite material and a preparation method thereof, Ag nano particles and Fe3O4 nano particles are simultaneously modified on basalt fibers, and the limitation of a traditional single modification function is broken; the modified basalt is used for preparing the oriented PVDF composite material, so that the piezoelectric property and the electromagnetic shielding property of the prepared PVDF composite material are synchronously improved, the PVDF composite material can be directly used as a material for preparing structural parts such as equipment shells, cabins and automobiles, self-sensing and self-shielding intelligent structures are manufactured, and the PVDF composite material can be used as a novel PVDF composite material product. Good application prospects and economic values are realized.

The invention discloses a composite material containing siloxane benzoxazine interface modified basalt fibers and a preparation method of the composite material, and belongs to the technical field of polymer composite materials. Benzoxazine is adopted for surface grafting modification of basalt fibers for the first time, and the composite material is prepared through the following steps that firstly, a piranha solution is used for treating the surfaces of the basalt fibers, so that a large number of hydroxyl groups are formed on the surfaces of the basalt fibers; and then siloxane-containing benzoxazine is hydrolyzed and grafted on the hydroxyl on the surface of the fiber. According to the method, not only is the surface roughness of the fiber increased, but also a crosslinkable oxazine ring group is introduced. In the heating curing process, the oxazine ring is subjected to ring-opening reaction, and forms a cross-linked structure with the basalt fiber and the epoxy resin, so that the interface bonding force between the fiber and the resin is remarkably enhanced. In addition, flexible aliphatic chains contained in the siloxane-containing benzoxazine can improve the toughness of the composite material, further improve the mechanical properties of the composite material, and facilitate the expansion of the application range of the basalt fiber composite material.

The invention relates to the field of high-performance composite materials, and discloses a basalt fiber / weather-resistant polyurethane resin-based composite material as well as a preparation method and application thereof. Comprising the following steps: mixing polyether polyol, polyester polyol, a blocked isocyanate prepolymer and a DA monomer to react to obtain a polyurethane prepolymer; mixing a polyurethane prepolymer, a nano silicon dioxide modifier, a hindered amine light stabilizer, a microencapsulated latent curing agent and a phosphorus-nitrogen synergistic flame retardant to obtain a polyurethane resin mixture; the preparation method comprises the following steps: coating the surface of basalt fiber with a silane coupling agent to obtain modified basalt fiber, forming an epoxy nano-alumina coating and a polyurethane resin mixture layer on the surface of the modified basalt fiber, soaking in a polyurethane resin mixture, and curing to obtain the basalt fiber / weather-resistant polyurethane resin-based composite material. According to the scheme, the basalt fibers are coated in a gradient manner to form a chemical-physical synergistic enhancement structure, so that the interfacial force between the polyurethane resin and the basalt fibers is enhanced.

The invention provides a method for predicting the stability of a basalt fiber asphalt mixture, relates to the field of road engineering and intelligent prediction, and aims to optimize the mix proportion design process of the basalt fiber asphalt mixture and accurately predict the stability of the basalt fiber asphalt mixture. By combining feature engineering, regression algorithm comparison, model optimization and interpretability analysis, the mechanical property, the crack resistance and the high temperature resistance of the asphalt mixture are remarkably improved, and meanwhile, the dynamic optimization of the performance of the mixture under different use conditions is realized; according to the method, the problem of accurate prediction of the performance change of the asphalt mixture under different environmental conditions is solved through a more scientific, intelligent and adaptive novel mix proportion design thought, and the comprehensive performance of the asphalt mixture and the sustainability of road engineering are improved; based on the characteristics of the basalt fiber, the mix proportion of the asphalt mixture is optimized, the manual intervention and test times are reduced, and the design efficiency and accuracy are improved.

The invention relates to the technical field of wharf structures, and discloses a wharf structure reinforced by basalt fiberboards, which comprises a pile foundation, a pile cap mounted at the top of the pile foundation, a prefabricated cross beam mounted at the top of the pile cap and a panel mounted at the top of the cross beam, an insertion groove for insertion of the insertion plate is prefabricated in the top of the pile cap, a first prefabricated hole is prefabricated in the insertion plate, second prefabricated holes are prefabricated in the two sides of the insertion groove, a split bolt is arranged in the first prefabricated hole, and the two ends of the split bolt are located in the two second prefabricated holes correspondingly and are in threaded connection with limiting nuts correspondingly; basalt fiber boards are prefabricated at the bottoms of the cross beams and abut against the pile caps. The stability of the wharf structure can be improved.