11053 results about "Glass fiber" patented technology

The invention provides a low-voltage cable, and relates to the technical field of cables, the low-voltage cable comprises a conductor layer, a support layer, a shielding layer and a sheath layer, the conductor layer is composed of multiple strands of fractal stranded conductors, and each fractal stranded conductor comprises an inner-layer superfine silver-plated copper wire, a middle-layer copper-clad aluminum wire and an outer-layer nickel-plated copper alloy wire; the supporting layer wraps the conductor layer and comprises an inner supporting layer, a dynamic framework layer and an outer restraint layer, the inner supporting layer is an obliquely wound aramid fiber woven belt, the dynamic framework layer is formed by alternately arranging shape memory polymers and carbon fiber composite belts, and the outer restraint layer is a spirally wound silica gel-glass fiber composite rope. The shielding layer comprises a tinned copper wire woven mesh; the sheath layer is a thermoplastic polyurethane matrix, a microcapsule self-repairing agent is dispersed in the thermoplastic polyurethane matrix, a microcapsule comprises a siloxane prepolymer, and the thermoplastic polyurethane matrix further comprises graphene nanosheets. Through collaborative design of the fractal stranded conductor layer, the dynamic skeleton support layer, the shielding layer and the self-repairing sheath, comprehensive improvement of cable performance is realized.

The present invention relates to an automatic winding drum taking and loading mechanism for a glass fiber drawing machine, comprising a middle bracket, an upper bracket, a winding drum pulling and pushing unit and a winding drum supporting unit; the winding drum pulling and pushing unit is mounted on the upper bracket, and the winding drum supporting unit is mounted on the middle bracket; the winding drum pulling and pushing unit comprises an upper linear module fixedly mounted on the upper bracket, a sliding assembly of the upper linear module is fixed with a combined bracket, and a pulling and pushing structure is mounted on the lower end of the combined bracket; the winding drum supporting unit comprises a middle support plate fixedly mounted on the middle bracket, a rear fixed flap and a weighing sensor are inherently provided on the upper side of the middle support plate, a front fixed flap is fixed on the weighing sensor, a supporting mechanism for driving the three supporting drum flaps to move is also mounted on the middle support plate, and a second camera is fixed to the end of the middle support rod. The present invention has the advantages of being able to reduce labor costs, improve the degree of automation, and avoid the risk of mechanical collisions to humans during human-machine collaborative work.

A fibrous insulation product comprising a plurality of randomly oriented glass fibers and a cross-linked formaldehyde-free binder composition at least partially coating the fibers is disclosed. The cross-linked formaldehyde-free binder composition is formed from an aqueous binder composition comprising 5.0% by weight to 37.0% by weight of at least one monomeric polyol having at least four hydroxyl groups and at least 50.0% by weight of a cross-linking agent comprising a polymeric polycarboxylic acid having at least two carboxylic acid groups, based on the total solids content of the aqueous binder composition. The glass fibers have an average fiber diameter in the range of 8 HT to 12 HT. The fibrous insulation product, after curing, has a density, when uncompressed, in the range of 0.30 pcf to 2.7 pcf.

The invention relates to the technical field of material engineering, in particular to a preparation method and application of a light heat insulation cement aerogel material.The preparation method comprises the following steps that an adhesive is taken and dissolved in water, and then the solution is cooled to the room temperature; adding a dispersing agent into the solution, then adding cement, uniformly stirring, adding a hydrophobic component, and uniformly stirring; reinforcing fibers are added and evenly stirred, and the reinforcing fibers are at least one of polymer fibers, carbon fibers and glass fibers; adding the foaming component, and uniformly stirring; pouring the solution into a mold, performing freezing pore-forming by using liquid nitrogen, and recovering to room temperature after the freezing pore-forming is finished; and then drying to obtain the cement aerogel material after the drying is finished. The cement aerogel material prepared by the invention has excellent characteristics of high strength, light weight, non-flammability and the like, is used for a buffer layer of an explosion-proof tank, and can integrally improve the performance of the explosion-proof tank.

The invention relates to the technical field of capacitor films, in particular to a high-temperature-resistant polypropylene capacitor film and a preparation method thereof.The high-temperature-resistant polypropylene capacitor film is prepared from, by weight, 94-98 parts of polypropylene resin, 1-3 parts of filler-doped modified balance adjusting agent, 0.5-2 parts of boron nitride-glass fiber combined agent, 0.05-0.4 part of nucleating agent, 0.2-0.4 part of antioxidant and 0.1-0.4 part of silane coupling agent; the high-temperature-resistant polypropylene capacitor film is obtained through the processes of melting extrusion molding, cooling shaping, preheating, two-way stretching, heat shaping, rolling and the like of the raw material composition. The polypropylene resin, the nucleating agent, the antioxidant and the silane coupling agent are blended, the filler-doped modified balance adjusting agent and the boron nitride-glass fiber coupling agent are added, and the raw materials are blended and coordinated, so that high feasibility of a two-way stretching process is guaranteed, breakdown resistance, mechanical strength and dielectric loss performance of the product are optimized, and the product has good mechanical properties. And meanwhile, the high-temperature-resistant and corrosion-resistant stability effects are remarkable.

The invention relates to the technical field of polypropylene, and discloses a high-strength polypropylene composite material as well as a preparation method and application thereof in an automobile bumper. The high-strength polypropylene composite material comprises the following components in parts by weight: 70-90 parts of polypropylene resin, 10-30 parts of polycarbonate resin, 25-40 parts of glass fibers, 3-10 parts of an allyl carbonate grafted polypropylene compatilizer and the like. The compatilizer contains carbonate groups similar to polycarbonate, so that the compatibility between polypropylene resin and polycarbonate resin is improved, and the compatilizer has higher mechanical properties. Moreover, the compatilizer contains carboxyl and can form interaction with the surface of the glass fiber, so that the compatibility between the glass fiber and the polypropylene resin is improved, the glass fiber has a better reinforcing effect, the tensile strength, the impact strength and the bending strength of the composite material are remarkably improved, and the compatilizer has good practical application in the aspects of automobile bumpers and the like.

The invention relates to the technical field of power transmission, and discloses a composite single-core power cable, comprising: a composite core composed of carbon fibers, glass fibers and a resin matrix containing a self-repairing microcapsule, the self-repairing microcapsule being capable of releasing a repairing monomer and repairing a microcrack when the composite core generates the microcrack; the conductor layer is arranged around the composite core and is composed of an aluminum conductor containing nano graphene; the insulating layer wraps the conductor layer and is made of a temperature-sensitive polymer material; and the outer sheath wraps the insulating layer and is made of a waterproof corrosion-resistant material. The composite core of the cable can recover more than 90% of original strength (the loss of tensile strength after repair is only 3%, which is recovered from 580Ksi to 570Ksi) within 24 hours after microcracks (such as the depth of 10mu m) generated by mechanical stress or fatigue in the operation process, and the self-repairing mechanism does not need manual intervention or external equipment, so that the self-repairing performance is greatly improved. And the sudden failure of the traditional cable caused by micro-damage accumulation is avoided.

The invention provides a low-dielectric glass fiber composition, a low-dielectric glass fiber and a preparation method thereof, and the low-dielectric glass fiber composition comprises the following components in molar percentage: 54 to 60 percent of SiO2, 21 to 32 percent of B2O3, 1.0 to 9.5 percent of Al2O3, 3 to 16 percent of alkaline earth metal oxide, 0.01 to 4.0 percent of ZrO2, 0.1 to 4.0 percent of TiO2, 0.01 to 2.0 percent of LiO2 and 0.5 to 5.0 percent of F2. Wherein the alkaline earth metal oxide comprises CaO and MgO, and according to the molar percentage, the CaO accounts for 0.01%-4.0%, and the MgO accounts for 0.5%-8.0%. According to the glass fiber, SiO2 and B2O3 are taken as main components of the glass, SiO2 can be taken as a network former of a glass structure, on one hand, part of B2O3 can form a [BO4] tetrahedral structure to enter a glass silica network structure so as to play a role in reinforcing a net, and on the other hand, B2O3 can effectively inhibit ion polarization so as to reduce the dielectric constant and dielectric loss of the glass fiber; according to the present invention, the specific type of the alkaline earth metal oxide is added, and the certain content of the Al2O3, the ZrO2, the TiO2, the LiO2 and the F2 is supplemented so as to further reduce the dielectric constant and the dielectric loss of the glass fiber, and the cooperative control of the components is beneficial to the improvement of the glass processing property and the guarantee of the glass fiber drawing stability.

The present invention relates to the technical field of composite materials. Provided are a glass fiber-reinforced epoxy resin composite material and a preparation method therefor. In the present invention, an epoxy silane coupling agent solution is used for performing surface modification on glass fibers. An epoxy silane coupling agent contains a hydrolyzable group and an epoxy group. Silicon hydroxyl generated when the hydrolyzable group is hydrolyzed can be connected to the glass fibers, so as to effectively modify the surfaces of the glass fibers. The epoxy group can react with an epoxy resin matrix, thereby improving the infiltration effect of the epoxy resin on the glass fibers and improving the bonding performance of the interface of the glass fiber-reinforced epoxy resin composite material, and thus improving the mechanical properties of the glass fiber-reinforced epoxy resin composite material. The epoxy resin is cured and modified by using a functional curing agent or nanoparticles, so as to improve the ductility or strength of the epoxy resin, thereby improving the mechanical properties of the prepared glass fiber-reinforced epoxy resin composite material.

The invention discloses a high-performance green and environment-friendly single-component polymer cement waterproof dry blend and a preparation method thereof, and relates to the technical field of building materials, the high-performance green and environment-friendly single-component polymer cement waterproof dry blend comprises the following components: an inorganic cementing material, latex powder, graded quartz sand, a functional filler, cellulose ether, an organic silicon defoamer, a polycarboxylic acid water reducer and compound fibers; the functional filler is modified waste glass powder prepared through mechanical activation and silanization modification; the compound fiber is a mixture of modified glass fiber and modified polypropylene fiber; the preparation of the modified glass fiber comprises tannic acid and polyethyleneimine combined modification and graphene oxide modification, and the preparation of the modified polypropylene fiber comprises plasma activation. The polymer cement waterproof dry blend prepared by the method adopts the glass powder to replace natural mineral filler, is energy-saving and environment-friendly, and the cement matrix is modified by various fibers, so that the prepared polymer cement dry blend is excellent in comprehensive performance.

The invention provides an integrally-formed synthetic sleeper, a preparation process and a preparation device.The integrally-formed synthetic sleeper comprises a polyurethane resin matrix, continuous glass fibers are longitudinally arranged in the polyurethane resin matrix and used for longitudinal reinforcement of the synthetic sleeper, and a reinforcement layer composed of glass fiber fabric and polyurethane resin is arranged on the surface of the polyurethane resin matrix. The thickness of the reinforcing layer is 1 to 10 mm; the overall density of the synthetic sleeper is 0.64-1.4 g / cm < 3 >, and the polyurethane resin accounts for 35-50% of the total weight of the synthetic sleeper; the continuous glass fiber accounts for 35-60% of the total weight of the synthetic sleeper, and the glass fiber fabric accounts for 3-10% of the total weight of the synthetic sleeper; the overall strength of the composite sleeper can be remarkably improved, and transverse cracking is avoided; vOC generated in the production process of the synthetic sleeper and solid waste pollution caused by polishing are reduced.

The invention discloses a PA6 nylon composite material for a high-temperature-resistant filter screen and a preparation method of the PA6 nylon composite material, and relates to the technical field of composite materials. The invention discloses a PA6 nylon composite material for a high-temperature-resistant filter screen. The nylon material is prepared from the following raw materials in parts by weight: 60 to 80 parts of modified PA6 nylon, 10 to 20 parts of modified glass fiber, 2 to 5 parts of montmorillonite, 0.3 to 0.8 part of antioxidant 1010, 0.2 to 0.6 part of stearic acid, 0.5 to 1.0 part of ethoxylated fatty amine, 1 to 3 parts of nano titanium dioxide, 1 to 3 parts of polytetrafluoroethylene micro powder, 3 to 8 parts of aluminum hydroxide, 0.5 to 1.5 parts of chitosan, 1 to 3 parts of hyperbranched polyamide and 0.5 to 1.5 parts of urea-formaldehyde resin coated epoxy resin microcapsules. And 0.3 to 0.8 part of sodium polyacrylate. The PA6 nylon composite material for the high-temperature-resistant filter screen has remarkable advantages. The material disclosed by the invention is high in mechanical property, good in thermal stability and stable in size at high temperature; the self-cleaning, antibacterial and antistatic functions are realized, and the filtering efficiency is high; chemical corrosion resistance, wear resistance and low water absorption are achieved; part of the raw materials can be recycled, the environmental protection concept is met, and the use requirement of the high-temperature-resistant filter screen in a complex environment can be met.

The invention discloses a glass fiber particle assembly line-based magnetic suction quick-release vibration disc system and a detection method, and relates to the technical field of production and processing, the system comprises a data acquisition module for acquiring data of a vibration light-emitting chassis, a magnetic suction column, an assembly line and particles by means of a distributed sensor network, and transmitting the data to an intelligent self-adaptive control module after signal processing; the intelligent self-adaptive control module realizes intelligent dynamic regulation and control of the parameters of the magnetic suction quick-release vibration disc, optimizes the production process of the glass fiber particles, and automatically generates an accurate control instruction based on a data analysis result by integrating multi-source information and performing deep fusion and analysis, so that the production efficiency of the glass fiber particles is improved. Parameters such as the vibration frequency and amplitude of the vibration light-emitting chassis and the magnetic attraction strength of the magnetic attraction column are adjusted to meet the requirements in different production states, so that the system can quickly respond to changes in the production process, defective particles are reduced, and the production efficiency is improved.

The utility model belongs to the technical field of dies for producing vertical tails, in particular to an integrated die for manufacturing a built-in antenna of a vertical tail, which is characterized in that a lower die is provided with a positioning column, an upper die is provided with a positioning hole corresponding to the positioning column, the upper die and the lower die are respectively provided with a vertical tail chamber, and the vertical tail chamber is provided with a positioning hole corresponding to the positioning column. A glass fiber cloth is arranged in the vertical fin cavity, composite material cloth is arranged in the vertical fin cavity, foam is arranged in the composite material cloth, a sheet antenna is arranged in the foam, and an insert matched with the glass fiber cloth is arranged in the vertical fin cavity; the sheet antenna is provided with an antenna connecting line, and the lower die is provided with an antenna connecting line hole matched with the antenna connecting line.

The invention discloses a high-weather-resistance halogen-free flame-retardant polyamide composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The composite material comprises the following raw materials in parts by weight: 20-60 parts of polyamide resin A, 0-20 parts of polyamide resin B, 10-50 parts of glass fibers, 0.1-2 parts of an ultraviolet absorbent, 0.1-2 parts of a free radical scavenger, 10-20 parts of a halogen-free flame retardant, 1-15 parts of a flame retardant synergist and 0.5-5 parts of a conventional auxiliary agent. The preparation method comprises the following steps: uniformly mixing the polyamide resin A, the polyamide resin B, the ultraviolet absorbent, the free radical scavenger, the flame-retardant synergist and the conventional auxiliary agent in a high-speed mixer according to the proportion to obtain a mixture, then adding the mixture into a double-screw extruder through main feeding, side feeding of the halogen-free flame retardant through a first side feeding and side feeding of the glass fiber through a second side feeding, and carrying out extrusion molding to obtain the flame-retardant polyamide composite material. And carrying out melt blending and extrusion granulation to obtain the high-weather-resistance halogen-free flame-retardant polyamide composite material. The obtained high-weather-resistance halogen-free flame-retardant glass fiber reinforced polyamide composite material is excellent in mechanical property, flame retardance and weather resistance.

The invention relates to the field of detection, in particular to a glass fiber asphalt shingle quality detection device. Traditional detection equipment has significant limitations which are mainly embodied in that only impact at a single position can be simulated or randomness is lacked, and diversified impact conditions possibly encountered by asphalt shingles in actual use cannot be accurately reflected. The glass fiber asphalt shingle quality detection device comprises a shell, and a frame body and the like are arranged in the shell; the frame body is of an open structure, and a placing frame is arranged in the frame body in a sliding mode. According to the invention, the two electric push rods drive the lifting frame, the two push blocks and the two transverse shafts to move synchronously, so that the knocking block can carry out repeated impact test on the asphalt shingle body, and the continuity and consistency of the test are ensured; not only is the efficiency of the knocking test improved, but also the flexibility of force adjustment in the detection process is improved, and the impact resistance requirements of different asphalt shingle bodies can be met; through multiple impact tests, the quality evaluation of the asphalt shingle can be ensured to be more comprehensive and accurate.

The invention discloses a high-strength low-density proppant as well as a preparation method and an in-situ generation method thereof. The proppant is prepared by compounding recycled glass fiber reinforced plastic powder or glass fiber powder with different meshes and recycled glass fiber reinforced plastic powder in different proportions and blending a styrene system / unsaturated polyester resin system in different proportions. The glass fiber reinforced plastic powder as the filler can improve the mechanical properties of the proppant, such as strength and toughness. The matrix is made of polystyrene or unsaturated polyester or other high polymer materials and is low in density. Therefore, the proppant has the characteristics of high strength and low density. The invention discloses a preparation method of a high-strength and low-density proppant, which can produce the high-strength and low-density proppant with uniform particle size distribution on a large scale by adopting a suspension polymerization method, and can efficiently recover a large amount of glass fiber reinforced plastic wastes. The suspension polymerization method is simple to operate, the produced proppant is high in roundness and sphericity, the mining cost of a coal-bed gas well can be reduced, and the yield of coal-bed gas can be increased.

The invention provides a long glass fiber reinforced flame-retardant ceramic polypropylene material and a preparation method thereof. Comprising the following components in parts by weight: 0-20 parts of polypropylene, 30-60 parts of flame-retardant long glass fiber master batch and 40-70 parts of ceramic master batch. According to the invention, the multi-gradient melting point glass powder, the phosphorus flame retardant, the tetrapod-like zinc oxide whisker, the long glass fiber and the ceramic forming filler are matched, so that a carbon layer can be kept compact in structure and high in structural strength during combustion, resists flame pressure and is not damaged; an interlayer structure blocks a heat conduction path, the back surface temperature is obviously reduced, and the material is prevented from softening and collapsing. The obvious effects of ablation resistance, good processing, high strength, good flame retardance, low cost and light weight are achieved.

The invention provides a large-size fan blade double-heat-transfer-mode microwave pyrolysis system and method.In the system, ceramic chips inlaid with SiC wave-absorbing agents are arranged on the surface of a conveying belt of a material conveying unit, and a tunnel type microwave pyrolysis reactor utilizes microwaves to conduct microwave pyrolysis on the large-size fan blade under the assistance of the ceramic chips inlaid with the SiC wave-absorbing agents; the pyrolysis unit is used for pyrolyzing fan blade materials conveyed into the material conveying unit by the material conveying unit; the pyrolysis gas treatment unit is used for purification-fractional condensation and collection of organic components; and the glass fiber treatment unit realizes carbon residue separation and low-loss recovery of glass fibers through ultrasonic infiltration. The problems that waste fan blades are difficult to recycle, performance degradation of recycled glass fibers is serious, and recycling benefits are low are solved, the requirement for continuously preparing high-strength glass fiber products and co-producing liquid oil through large-size retired fan blades can be met, and microwaves can be driven through wind power generation; and a gas device is additionally arranged to supply partial energy to the system, so that the resource recovery rate and the energy utilization rate are greatly improved.

The invention discloses a glass fiber reinforced epoxy resin composite material and a preparation method thereof, and relates to the technical field of composite materials, and the preparation method comprises the following steps: carrying out organic solvent immersion treatment, cleaning and drying on glass fibers to obtain pretreated glass fibers; respectively carrying out phytic acid modification treatment on the pretreated glass fibers and hollow alumina microspheres; performing plasma surface treatment on the glass fibers and the hollow aluminum oxide microspheres subjected to the phytic acid modification treatment; mixing and dispersing epoxy resin, a curing agent, the glass fibers subjected to plasma surface treatment and the hollow aluminum oxide microspheres according to a preset mass ratio; carrying out vacuum degassing on the mixture; and injecting the degassed mixture into a mold for step-by-step curing. The preparation method has the beneficial effects that active groups are introduced to the surfaces of the glass fibers through phytic acid treatment, the number of the active groups is further increased by combining plasma surface treatment, and the interface bonding capacity of the glass fibers and an epoxy resin matrix is remarkably improved.

The invention discloses a high-strength long glass fiber reinforced polyamide composite material and a preparation method thereof, and belongs to the field of polymer composite materials. The high-strength long glass fiber reinforced polyamide composite material is prepared from the following raw materials in parts by mass: 31 to 54.5 parts of polyamide resin, 30 to 60 parts of high-modulus alkali-free glass fiber, 4 to 10 parts of graphene oxide master batch, 1 to 3 parts of compatilizer, 0.5 to 3 parts of chain extender master batch and 0.5 to 2 parts of processing aid, the graphene oxide master batch is formed by crosslinking and attaching graphene oxide to polyamide resin PA6; according to the preparation method, the problem of dispersity of graphene oxide in polyamide resin is solved, nylon molecular chains and hydroxyl groups on the surface of graphene oxide are subjected to cross-linking combination under the action of the cross-linking agent, nylon molecules are effectively grafted to graphene oxide lamellas, and the graphene oxide and the glass fibers have a synergistic enhancement effect, so that the graphene oxide / glass fiber composite material is prepared. The mechanical property of the long glass fiber reinforced polyamide composite material is greatly improved, and meanwhile, the composite material is endowed with good conductivity.

The invention discloses an organic fiber AGM separator and application thereof, and belongs to the field of storage batteries. The organic fiber AGM separator comprises high-alkali glass wool, medium-alkali glass fiber, bi-component polyester fiber and slurry containing a nitrogen-doped reduced graphene oxide / lead oxide composite material, the nitrogen-doped reduced graphene oxide / lead oxide composite material is prepared by the following steps: uniformly ultrasonically dispersing graphene oxide, deionized water and absolute ethyl alcohol, slowly dropwise adding aniline, and ultrasonically stirring to obtain a mixed solution; and adding lead acetate powder into the mixed solution, carrying out ultrasonic stirring, hydrothermal reaction, washing and freeze drying, and carrying out pyrolysis in a rare gas atmosphere to obtain the nitrogen-doped reduced graphene oxide / lead oxide composite material. After being prepared into slurry, the AGM separator substrate is coated with the slurry, and then acid leaching and curing are carried out; the material has excellent dendritic stabbing resistance, and the service life of the storage battery is prolonged.

The invention relates to the technical field of insulating materials, in particular to insulating powder and a preparation method thereof. The invention discloses a flame-retardant coating which comprises the following components in parts by weight: 15-25 parts of epoxy resin, 10-20 parts of aluminum hydroxide, 5-12 parts of nano boron nitride, 1-3 parts of a silane coupling agent KH-560, 3-8 parts of polytetrafluoroethylene micro powder, 2-6 parts of fluorine-modified montmorillonite, 4-9 parts of melamine cyanurate, 2-5 parts of nano titanium dioxide, 1-4 parts of a fluorine-modified graphene oxide-polyaniline composite material and 0.5-2 parts of pentaerythritol stearate. The anti-corrosion coating is prepared from the following components in parts by weight: 1 to 3 parts of nano zinc oxide, 5 to 10 parts of glass fiber, 2 to 5 parts of polyhedral oligomeric silsesquioxane-polyimide copolymer, 1 to 4 parts of ferrocenyl epoxy resin and 0.5 to 2 parts of perfluorooctyltriethoxysilane. The insulation powder is high in corrosion resistance, excellent in insulation, heat dissipation and mechanical performance, environmentally friendly in processing, good in adaptability, capable of prolonging the service life of equipment and reducing the cost, suitable for special environments and wide in popularization prospect.

The invention discloses a wire distributing device for glass fiber reinforced plastic grating preparation and a production device with the same. The wire distributing device comprises a rack and a plurality of first clamping mechanisms sequentially arranged on the rack in the first direction, and each first clamping mechanism comprises a first left clamping assembly and a first right clamping assembly; the wire distributing device further comprises a wire shearing mechanism arranged on the outer side of the first left clamping assembly, a liftable movable base and a plurality of second clamping mechanisms sequentially arranged on the movable base in the first direction. The second clamping mechanisms comprise the second left clamping assembly and the second right clamping assembly. The second left clamping assembly is located between the wire shearing mechanism and the first left clamping assembly, the first right clamping assembly is used for integrally clamping the free end of the glass fiber, a concave part is arranged in the first right clamping assembly, and a clamping convex part used for stretching into the concave part is arranged in the second right clamping assembly. According to the wire distributing device for preparing the glass fiber reinforced plastic grating and the production device with the wire distributing device, the glass fiber reinforced plastic grating which is overall uniform and relatively good in quality can be prepared.

The utility model belongs to the technical field of glass fiber production equipment, and particularly relates to an expansion piece overturning type mechanical arm capable of automatically sleeving a machine head wire winding barrel. The expansion piece turnover type mechanical arm comprises an automatic cylinder feeding mechanism and a turnover cylinder conveying mechanism. The automatic cylinder feeding mechanism comprises a lifting feeding set, a first-stage cylinder feeding mechanism and a second-stage cylinder feeding mechanism. The overturning cylinder feeding mechanism comprises a supporting base, an overturning mechanism and an expansion piece rotating mechanism. The expansion piece overturning type mechanical arm and the control method thereof have the technical effects that the barrel feeding efficiency is high, and the wire winding barrel cannot be damaged.

The invention relates to a sensor head (20), wherein the sensor head (20) comprises a sensor element (11), a glass fiber and / or an optical waveguide (6). The sensor element (11) is mechanically and optically connected to the first end of the glass fiber or the optical waveguide (6) such that the glass fiber or the optical waveguide (6) can irradiate the sensor element (11) with pump radiation of a pump radiation wavelength, which the glass fiber or the optical waveguide (6) transports in the direction of the sensor element (6), and the glass fiber or the optical waveguide (6) can detect fluorescence radiation with a fluorescence radiation wavelength from the interior of the sensor element (11) and transports it in the direction away from the sensor element (6). The sensor head comprises a ceramic ferrule (7) with an inner tube along its longitudinal axis.The optical fiber (6) is inserted into the inner tube of the ferrule (7) so that the sensor element (11) is located at the other end of the ferrule (7) and / or protrudes from the inner tube of the ferrule (7). The ferrule (7) is inserted into a hollow tip (3) so that the sensor element (11) is preferably located at the tip of the hollow tip (3). The hollow tip (3) is inserted into a ceramic tube (2). The sensor head (20) comprises a shuttle (8). The glass fiber or the optical fiber (6) is guided within the shuttle (8). The shuttle (8) is inserted within the ceramic tube (2). The hollow tip (3) closes the ceramic tube (2). A holder (1) is pushed or plugged onto the ceramic tube (2). The glass fiber or the optical fiber (6) is guided outside the sensor head (2) in an outermost fiber shield (5).The sensor element (11) comprises crystals with paramagnetic centers that emit fluorescence radiation upon irradiation with pump radiation of the pump radiation wavelength. The crystal can, in particular, comprise diamond with NV centers and / or ST1 centers and / or TR1 centers as paramagnetic centers.

The invention relates to the technical field of spandex fabrics, in particular to a flame-retardant spandex fabric and a preparation method thereof.The flame-retardant spandex fabric comprises a spandex base layer, inner layers are fixedly arranged on the upper surface and the lower surface of the spandex base layer, and improved layers are fixedly arranged on the outer surfaces, away from the spandex base layer, of the inner layers; the spandex base body layer is formed by weaving elastic fibers, and the elastic fibers comprise spandex fiber lines. According to the flame-retardant spandex fabric, the spandex base body layer is matched with the inner layer and the improved layer to form the flame-retardant spandex fabric, the spandex base body layer is formed by spirally winding the glass fiber threads and the hemp fiber threads on the outer walls of the spandex fiber threads, and the elastic performance of a product is optimized.

The invention discloses an underground chamber structure of a compressed air energy storage power station, a construction method and a parameter optimization design method, and belongs to the field of compressed air energy storage and underground space engineering. A hard rock stratum building chamber is determined through systematic site selection investigation, a high-performance concrete lining (containing fiber reinforcement) and a polyurethane buffer layer are adopted to synergistically improve the stability, and a vinyl ester resin-based glass fiber reinforced plastic three-layer composite structure serves as a sealing layer (including a bonding layer, a reinforcement layer and an impermeable layer); the processes of sand blasting pretreatment, stepped joint and the like are combined to guarantee the sealing performance; meanwhile, on the basis of a finite element model, structural parameters are optimized by taking the lowest whole life cycle cost as a target and taking strength, deformation, leakage rate and the like as constraints, and a recommended parameter combination of each structural layer is obtained in combination with an orthogonal experimental design and an improved genetic algorithm. The method is suitable for various geological conditions, the safety, economical efficiency and adaptability of the compressed air energy storage power station are effectively improved, and the method is suitable for large-scale application and popularization.

The invention relates to the technical field of polyurethane pultrusion, in particular to a preparation method of a polyurethane pultrusion resin composite material, which comprises the following steps: drawing glass fiber into a glue dipping tank filled with polyurethane resin for dipping; heating the impregnated glass fiber in a pre-forming mold to obtain a pre-cured gel forming body; when it is judged that preparation of the pre-cured gel forming body does not meet the preset standard according to the scattering intensity standard deviation of the pre-cured gel forming body, preparation parameters are adjusted; the pre-cured gel forming body meeting the preset standard is put into a pultrusion mold for pultrusion, and a cured forming body is obtained; when it is judged that the preparation of the cured molded body does not meet a preset standard according to the average ripple amplitude, determining an adjustment strategy for the preparation of the cured molded body to do not meet the standard according to the curvature variance of the surface lines; and pulling and naturally cooling the cured molded body meeting the preset standard to obtain the polyurethane resin composite material. The preparation efficiency of the resin composite material is improved.

The invention discloses an insulating tape for a new energy battery and a preparation method of the insulating tape, and relates to the technical field of new energy battery assemblies. The insulating tape for the new energy battery is prepared by coating pretreated glass fiber cloth with a coating, the coating is prepared from the following raw materials in parts by weight: 15 to 20 parts of modified polyimide resin, 2 to 4 parts of epoxy resin E-51, 71 to 77 parts of an ethanol / butanone mixed solvent, 3 to 5 parts of modified nano silicon dioxide, 0.2 to 0.4 part of a silane coupling agent KH-550, 0.1 to 0.3 part of polydimethylsiloxane, 0.1 to 0.2 part of paraffin-based mineral oil and 0.3 to 0.5 part of triethylene tetramine. The glass fiber cloth pretreatment material comprises deionized water and a 5%-8% sodium hydroxide solution. The insulating adhesive tape for the new energy battery contains the modified polyimide resin, so that the high temperature resistance and electrolyte resistance of the adhesive tape can be enhanced, the insulativity is improved, and the modified nano silicon dioxide is good in dispersity. The preparation process is fine, the glass fiber cloth is fully pretreated, the preparation process is standard, and the use requirements of new energy batteries can be met.