12results about How to "Change internal structure" patented technology

The invention discloses an anti-rut enhanced epoxy asphalt mixture and a preparation method thereof, belongs to the technical field of asphalt mixture processing, and is used for solving the technical problem that the anti-rut performance, the water stability and the low temperature resistance of an asphalt mixture in the prior art need to be further improved. The modified asphalt is prepared from the following components in parts by weight: 16 to 20 parts of matrix asphalt, 0.8 to 1 part of additive, 4 to 6 parts of reinforced elastomer, 3 to 5 parts of epoxy modified polysiloxane, 4 to 5 parts of modified reinforced fiber and 65 to 75 parts of aggregate, according to the invention, the asphalt mixture composed of the matrix asphalt and the aggregate is reinforced by the reinforced elastomer, the epoxy modified polysiloxane and the modified reinforced fibers, so that the rutting resistance of the epoxy asphalt mixture is effectively improved, and the water stability and low temperature resistance of the epoxy asphalt mixture are also improved.

The invention relates to the technical field of biology, in particular to a method for solid state fermentation of bagasse by using white rot fungi, which comprises the following steps: (1) activation and propagation of strains: pouring the white rot fungi into a PDA culture medium for activation and propagation; (2) raw material preparation: air-drying fresh bagasse, adding water to adjust the water content of the bagasse to 60-70%, and adjusting the pH to 4-6 with glacial acetic acid; and (3) preparing the bagasse feed, namely mixing the white rot fungi subjected to expanding culture according to 1-5% of the weight of an air-dried substance with bagasse of which the initial pH is adjusted to be 4-6, adding 1-5% of soluble sugar, and fermenting for 10-45 days to obtain the fermented bagasse feed. According to the white rot fungus fermented bagasse prepared by the method disclosed by the invention, the hemicellulose content of the bagasse can be reduced to 26.62%-22.45%, the lignin content can be reduced to 10.67%-8.66%, the crude protein content of the bagasse can be increased to 1.61%-2.12%, the lactic acid content can be increased to 26.57 mg / L-181.69 mg / L, and high-quality feed application of the bagasse can be realized.

The invention relates to the technical field of wave-absorbing materials, in particular to an iron-cobalt alloy carbon magnetoelectric composite wave-absorbing material and a preparation method and application thereof. The specific preparation method comprises the following steps: by taking potassium ferricyanide as a carbon source and a nitrogen source, carrying out a co-precipitation reaction with a Co source and sodium citrate in a solvent system to prepare the Prussian blue analogue; and then under a protective atmosphere, pyrolyzing the Prussian blue analogue at 400-600 DEG C, so that the Co nanoparticles are loaded on the surface of the carbon-nitrogen matrix to obtain the iron-cobalt alloy carbon magnetoelectric composite wave-absorbing material. According to the invention, C = N groups in metal coordinate bonds are mainly used as a carbon source and a nitrogen source, Co nanoparticles are used as magnetic particles, and the pyrolysis temperature is regulated to change the microstructure and the internal structure of the product, so that the regulation of electromagnetic parameters of the material is realized, and the wave-absorbing material with good impedance matching and attenuation performance is obtained.

The invention belongs to the technical field of base film products, and provides a solar backboard base film and a production process thereof. The material is prepared from the following raw materials in parts by weight: 25-70 parts of a block copolymer, 30-50 parts of a thermoplastic elastomer blend, 5-15 parts of a catalyst, 1-10 parts of insulating oil and 10-20 parts of an inorganic material, the preparation process of the solar backboard base membrane comprises the steps of S1, preparing standby slurry, S2, esterifying, S3, polycondensing and S4, preparing the membrane. Compared with the prior art, the base film is prepared by adding the insulating oil, so that the defect that the base film has a micro-pore structure in the prior art can be overcome, the internal structure of the existing base film is changed, gaps among a plurality of molecular groups of the internal structure are smaller, permeation of substances such as water vapor is prevented, the breakdown voltage of the solar back plate base film can be improved, and the service life of the solar back plate is prolonged. The electrical performance can be further improved, and high reliability and safety guarantee are achieved in the using process; the electric insulation property and the steam barrier property are excellent.

The utility model relates to the technical field of feeding structures of drawing frames, and discloses a full-automatic feeding mechanism which comprises an anti-winding structure, a conveying structure and a raw material structure, the anti-winding structure is arranged at the upper end of the raw material structure, the conveying structure is arranged at the right end of the raw material structure, the anti-winding structure comprises a shell, and a plurality of hooks are fixedly installed at the bottom of the shell. The top of the shell is fixedly provided with a support, the upper end of the support is connected with an adjustable gear motor, the bottom end of the adjustable gear motor is connected with a safety shaft sleeve, the bottom end of the safety shaft sleeve is connected with a driving shaft, the middle section of the driving shaft is fixedly provided with a driving gear, the driving gear is meshed with six driven gears, and each driven gear is connected with a driven shaft. The bottom ends of the driving shaft and each driven shaft are each fixedly provided with a rotating pipe, and the conveying structure comprises a conveying frame. According to the full-automatic feeding mechanism, fiber rods can be prevented from being wound in the feeding process, so that the fiber rods are orderly introduced into the machine for next-step processing.

The invention relates to the technical field of damage test equipment, in particular to a rock damage real-time monitoring device and method based on multiple detection couples.The rock damage real-time monitoring device based on the multiple detection couples.The rock damage real-time monitoring device based on the multiple detection couplescomprises a base, a shearing mechanism, a driving mechanism and clamping mechanisms symmetrically arranged on the base in a sliding mode; the two clamping mechanisms are used for clamping a rock sample, the shearing mechanism is arranged between the two clamping mechanisms and is used for shearing the rock sample, and the driving mechanism is used for driving the two clamping mechanisms to get close to each other or get away from each other; the device further comprises an acoustic emission monitoring system, an ultrasonic detection system and a monitoring system; the acoustic emission monitoring system, the ultrasonic detection system and the monitoring system are used for monitoring the state of the rock sample; one of the purposes is to solve the problem that an existing monitoring device cannot monitor behaviors of a rock sample in a complex stress state in real time; the second purpose is to provide a rock damage real-time monitoring method based on multiple detection coupling.

The present invention relates to a method for preparing a composite new material for signal hydrogen molecules, belonging to the technical field of composite materials. The preparation method of the present invention comprises firstly heat-treating activated carbon fibers, and then modifying the heat-treated activated carbon fibers through a series of chemical reactions. The modified composite new material has good adsorption effect on hydrogen and also has biocompatibility and good antibacterial property. The composite new material for signal hydrogen molecules prepared by the preparation method has excellent hydrogen supply capacity, which can reach up to 7.6mmol / g, which is much higher than hydrogen-rich water (0.8μmol / g). The effective hydrogen supply time is long-lasting, which can reach up to 23 days, which is much higher than the effective hydrogen supply time of hydrogen-rich water (about 3h). In addition, the antibacterial property is excellent, and the composite new material has good inhibitory effect on Escherichia coli and Staphylococcus aureus. The antibacterial method is physical antibacterial, so it is harmless to the human body and can be safely used in clinical hydrogen medicine.

This invention relates to the field of DC connection technology in the photovoltaic industry, specifically providing a board-end female DC connector, including a terminal block and a connector base. The terminal block has a pin at its upper end and a connector head at its lower end, and the connector base has an inner cavity. The connector base is provided with a retaining ring and a retaining seat. The pin of the terminal block is provided with a first limiting part, and the connector head is provided with a second limiting part. An anti-reverse ring is integrated between the first limiting part and the second limiting part of the terminal block, and the anti-reverse ring is provided with a slot. This invention changes the internal structure of the traditional connector base by providing a retaining ring and a retaining seat, making the connector base easier to mold. The retaining ring and retaining seat can cooperate to limit the movement of the upper and lower ends of the terminal block, making it less likely for the terminal block to fall off after assembly with the connector base. The protruding design can work together with the retaining seat to limit the radial movement of the terminal block, improving the connection effect between the terminal block and the connector base.

The present invention relates to the technical field of damage test equipment, and in particular to a real-time monitoring device and method for rock damage based on multiple detection couplings, wherein the real-time monitoring device for rock damage based on multiple detection couplings comprises a base, a shearing mechanism, a driving mechanism and a clamping mechanism symmetrically slidably arranged on the base, the two clamping mechanisms are used to clamp rock samples, the shearing mechanism is arranged between the two clamping mechanisms and is used to shear the rock samples, and the driving mechanism is used to drive the two clamping mechanisms to move closer to or away from each other; it also comprises an acoustic emission monitoring system, an ultrasonic detection system and a monitoring system, the acoustic emission monitoring system, the ultrasonic detection system and the monitoring system are used to monitor the state of the rock samples; one purpose is to solve the problem that the existing monitoring device cannot monitor the behavior of the rock sample under a complex stress state in real time; the second purpose is to propose a real-time monitoring method for rock damage based on multiple detection couplings.

This invention relates to the field of microwave absorbing materials technology, specifically to an iron-cobalt alloy carbon magnetoelectric composite microwave absorbing material, its preparation method, and its applications. The specific preparation method includes the following steps: using potassium ferricyanide as the carbon and nitrogen source, a co-precipitation reaction is carried out with a Co source and sodium citrate in a solvent system to prepare a Prussian blue analog; then, under a protective atmosphere, the Prussian blue analog is pyrolyzed at 400–600℃, causing Co nanoparticles to be loaded onto the surface of a carbon-nitrogen matrix, resulting in the iron-cobalt alloy carbon magnetoelectric composite microwave absorbing material. This invention mainly uses the C≡N groups in the metal coordination bonds as the carbon and nitrogen sources, and Co nanoparticles as magnetic particles. By controlling the pyrolysis temperature, the microstructure and internal structure of the product are altered, thereby controlling the electromagnetic parameters of the material and obtaining an absorbing material with good impedance matching and attenuation performance.

The utility model relates to the technical field of centrifugal casting molds, in particular to a centrifugal casting mold structure with a controllable inner structure, which comprises a centrifugal casting mold main body, a casting hole is arranged in the middle of the centrifugal casting mold main body, and a casting inner core is arranged in the casting hole. Limiting rings are arranged on the left side and the right side of the centrifugal casting mold body and located on the outer side of the casting hole, through holes are formed in the left side and the right side of each limiting ring, threaded rods are arranged in the through holes, rotating discs are arranged at the outer ends of the threaded rods, and threaded grooves corresponding to the threaded rods are formed in the outer wall of the end of the casting inner core. According to the centrifugal casting mold, the arranged casting inner core can be connected with the casting hole in a sliding mode, so that various types of casting inner cores can be conveniently replaced, and the purpose of changing the internal structure of the centrifugal casting mold main body can be achieved by replacing various casting inner cores; and the internal structure of the centrifugal casting mold main body can be controlled in a diversified manner.

The utility model relates to bearing processing technical field, concretely is a kind of positioning tool for bearing processing, it includes: disc body, including three-jaw chuck, the surface of three-jaw chuck is provided with locating dog; positioning mechanism, including locating knob, the surface of three-jaw chuck is rotatably connected in locating knob.The utility model is connected through locating knob and worm, rotates locating knob and drives worm rotation, to drive worm gear to rotate on the surface of fixed shaft, then through the connection of worm gear and connecting threaded rod, the action position of adjusting block can be adjusted by connecting threaded rod, through the connection of adjusting block and hinge lever, the movable block can be moved to the side away from adjusting block by hinge lever with the movement of adjusting block, then through the connection of movable block and locating dog, the radial positioning of bearing can be carried out, to change the internal structure of positioning mechanism in this way, reach the effect of improving the service life of three-jaw chuck.