81results about How to "Improve surface roughness" patented technology

The utility model belongs to cigarette production equipment technical field discloses a kind of tipping paper curling device.The tipping paper curling device includes rack, guide plate component, paper scraping component and adjusting roller component, guide plate component is fixedly installed on rack, for guiding tipping paper;Paper scraping component is set in the downstream of guide plate component, and paper scraping component includes cutter shaft and doctor blade, cutter shaft is fixedly arranged on rack, and doctor blade is arranged along the axial direction of cutter shaft, and doctor blade is used to scrape tipping paper;Adjusting roller component includes fastening ring, connecting shaft and first paper guide roller, fastening ring is rotatably arranged on cutter shaft and is fixedly connected with connecting shaft, first paper guide roller is sleeved on connecting shaft and is rotatably connected with connecting shaft, and first paper guide roller is located between guide plate component and paper scraping component, and it can make the included angle between tipping paper and cutter shaft be acute, to solve the roughness of tipping paper surface processing effect, enhance the bonding firmness of tipping paper and glue.

The application discloses a preparation method of an aluminum shielding tape surface conductive self-repairing coating. First, a clean aluminum shielding tape surface is obtained through an in-situ reduction / etching pretreatment method based on an aluminum salt / fluoride salt compound solution; second, a conductive / self-repairing dual-effect enhancer is prepared and introduced into a conductive / self-repairing coating synthesized by polyether amine, diisocyanate, a multiple active amine compound, p-xylene glycol and aniline; finally, the solid content of the coating is adjusted and sprayed on the clean aluminum shielding tape surface to obtain the conductive self-repairing coating. The application converts the Al2O3 film on the aluminum surface into a new substance Al, simultaneously constructs a regular porous structure, increases the bonding strength of the film layer, improves the adaptability and self-repairing efficiency of the coating in cable manufacturing and subsequent operation through the construction of a coating with multiple dynamic hydrogen bonds and imine bond synergistic effect, and realizes good conductive enhancement effect and rapid thermal self-repairing purpose of the coating by using isocyanate modified carbon nanotubes as the enhancer.

This invention belongs to the field of precision machining technology, and discloses a structured contact wheel belt grinding device and control method with flow pressure regulation. It has the function of grinding structured surfaces of various sizes with the same structure, including a support structure and a structured surface grinding actuator. The support structure includes a base plate, ribs, a motor fixing component, and an electric actuator support. The structured surface grinding actuator includes a drive motor, a motor connecting shaft, a drive wheel, a sanding belt, a tension wheel, a tension wheel bracket, a tension wheel bracket fixing component, a guide wheel assembly, a guide wheel assembly bracket, an electric actuator, a force sensor mounting flange, a force sensor, a contact wheel frame fixing component, a contact wheel frame, a structured contact wheel, a ring clamp, hydraulic oil lines, and an electro-hydraulic servo valve. This invention is mainly used for structured surface belt grinding. It adjusts the hydraulic system loading parameters according to the real-time changes in grinding force during the grinding process to control the internal flow pressure of the structured contact wheel, thereby meeting the stable processing requirements of structured surfaces of different sizes.

The invention provides a microstructure electrode capable of realizing solder confinement infiltration and a preparation method thereof, a radial microgroove structure, an annular microgroove structure and a parallel line microgroove structure are sequentially engraved on the surface of the electrode to form functional combinations of different microstructures, and the microstructure electrode capable of realizing solder confinement infiltration is obtained. Fine machining of the microstructures on the surface of the electrode and functional combination of different microstructures are adopted, the wettability of the welding flux is enhanced through the radial microgroove structures in the center area, the spreading shape of the welding flux is controlled through the annular microgroove structures in the edge area, overflowing of the welding flux is restrained, and diffusion of the welding flux is guided through the parallel line microgroove structures in the connecting area. Therefore, through mutual combination and accurate processing of the microstructures with different functions, confinement infiltration of the welding flux on the surface of the electrode is realized, and the welding quality of the electronic element and the electrode is optimized.

The application discloses a batch preparation method of a silicon diamond infrared composite material and the silicon diamond infrared composite material, and the method comprises the following steps: taking a nano-diamond suspension as a crystal seed, and performing spin coating on a plurality of silicon substrates at 200-400 r / min for 10-30 s, and then performing high-speed spin coating, wherein the spin coating liquid is a diamond suspension; adopting an HFCVD method to deposit a diamond film on one side of the plurality of silicon substrates; the process parameters of the HFCVD method comprise that the distance between hot wires is 10-15 mm, the distance between the hot wires and the silicon substrates is 8-12 mm, and the temperature of the hot wires is 1000-1200 DEG C; and the diamond film is deposited on the other side of the plurality of silicon substrates. The method can batch-prepared diamond films with high antireflection performance and low surface roughness, realizes simultaneous processing of the plurality of silicon substrates in a single deposition, and greatly reduces equipment investment and preparation cost.

The application provides a superfine diamond ceramic bond tool bit and a preparation method and application thereof, relates to the technical field of grinding tools, and comprises a base material and a functional additive; the base material comprises the following raw materials in parts by mass: 10-30 parts of a ceramic bond, 50-70 parts of diamond abrasive, 1-20 parts of a filler and 1-20 parts of a nano polishing agent; wherein the diamond abrasive is an irregularly shaped diamond aggregate; the functional additive comprises a temporary binder and a dispersing agent, the temporary binder accounts for 1-10% of the total mass of the base material, and the dispersing agent accounts for 1-10% of the total mass of the base material. The superfine diamond is not caused to agglomerate in the mixing process by changing the mixing mode of the diamond and introducing the diamond in the form of an irregularly shaped diamond aggregate, and the surface roughness of a workpiece is greatly improved by adding a spherical nano polishing agent, and the process is simple, controllable and stable.

This utility model discloses an anti-slip mattress, including a palm fiber mat. Multiple silicone particles are evenly fixed to the bottom of the palm fiber mat. An anti-slip cloth is laid on top of the palm fiber mat, and a latex mattress is placed on the anti-slip cloth. Several wavy grooves are evenly spaced longitudinally on the top of the latex mattress. Positioning mechanisms are fixedly installed on both sides and the front of the palm fiber mat. Each positioning mechanism includes a positioning band, which is fixedly installed on the upper outer wall of the palm fiber mat. Several first sub-buckles are fixedly installed on one side of the top of the positioning band, with the first sub-buckles positioned close to the palm fiber mat. A female buckle is fixedly installed on the other side of the top of the positioning band. The female buckle and the first sub-buckles are locked together. This utility model solves the problem that existing nursing beds often experience mattresses and mattresses slipping during use, which not only affects patient comfort but also adds extra workload for caregivers.

This utility model belongs to the field of mechanical manufacturing technology, and specifically relates to an internal keyway planing device for a planer. It can process internal keyways of workpieces with unlimited length, and its installation and operation are relatively simple. It includes a tool holder, on which a pressure plate that can move vertically is provided. One end of the pressure plate is provided with a detachable tool rod, and the other end of the tool rod is provided with a detachable cutter head. The tool holder consists of an upper tool holder and a lower tool holder, integrally formed. The planing device has a simple and reasonable structural design, is easy to install, and the tool holder and pressure plate are made of medium carbon steel, while the tool rod is made of alloy structural steel, resulting in high strength and rigidity. The tool rod is accurately positioned without adjustment; the cutter head is installed in a square hole and secured with a locking screw. The extension height can be adjusted according to the keyway size, providing good adaptability, and the cutter head is easy to install and remove.

This invention discloses a dielectric ceramic substrate material with a negative capacitance temperature coefficient, its preparation method, and its application, relating to the field of functional ceramics technology. It comprises, by mass percentage, 76wt%~93.5wt% CaTiO. 3 2wt%~15.5wt% SrTiO 3 1wt%~8.5wt% MgTiO 3 The ceramic substrate material contains 1.5wt%~3.2wt% modifier and 2wt%~4.5wt% cooling agent. It possesses excellent flexural strength, good surface roughness, and bonding strength, making it suitable for fabricating miniaturized chip-type microwave monolayer ceramic capacitors with low dielectric loss. It exhibits a negative temperature coefficient of capacitance (-(1500±500)ppm / ℃, (-55~125)℃), which can compensate for capacitance drift caused by temperature changes and prevent signal distortion. Furthermore, it is flat, non-deformable, and has good rectangularity, exhibiting excellent surface properties.

The utility model provides a kind of fixture for solving machine tool commutation line, including wedge, base and processing platform, base and processing platform are integrated structure, wedge side is equipped with inclined plane, inclined plane is symmetrically provided with mounting hole, base is symmetrically provided with positioning hole, bolt is sequentially passed through positioning hole and mounting hole and is fixed on wedge with base, processing platform bottom surface is fixedly connected with base, processing platform top is equipped with concave spherical surface, concave spherical surface is downward inclined, concave spherical surface is used to carry lens mold, ball cutter is along concave spherical surface surface path from concave spherical surface edge highest point until concave spherical surface edge lowest point all the way downlink processing.The utility model changes concave spherical surface space posture, completely avoids the path that ball cutter drops again climbs in traditional processing, avoids generating commutation line, since all the way downlink cutting makes that tool mark is continuous even, can improve surface quality and surface roughness, since avoiding commutation impact, can prolong the service life of tool, reduce tool changing frequency.

The present application relates to the field of industrial manufacturing, and provides a defect correction method and system for additive manufacturing of aerospace engine turbine blades. The method comprises: adsorbing quantum dot markers on the surface of metal powder, collecting signal data in the additive manufacturing process to obtain a set of multi-dimensional monitoring characteristic parameters; constructing a graph neural network model, inputting the set of multi-dimensional monitoring characteristic parameters as node features, predicting the spatio-temporal evolution of the molten pool area to obtain a defect probability distribution field; performing multi-objective optimization on the process parameter vector through a Bayesian optimization algorithm to obtain an adaptive control parameter combination, and performing partition control on the manufacturing process; for residual defects of the partition control result, using a reinforcement learning strategy network to select a repair action sequence, inputting the repair action sequence into an execution unit to perform cross-level collaborative processing on the residual defects to obtain a repaired blade structure. The present application realizes intelligent prediction and active correction of defects in additive manufacturing of turbine blades.

The application discloses a kind of light foam sandy soil based on low-temperature resistant microbial curing agent and its preparation method, the light foam sandy soil includes solid matter and liquid matter, the mass ratio of solid matter and liquid matter is 3.5-6:1, the proportion of each substance in solid matter is 78-84wt% of sandy soil, 12-18wt% of composite activator, 4-6wt% of bacterial foam adsorbent, and the liquid matter is cementing solution.The preparation method includes the following steps: preparing low-temperature resistant microbial curing agent;The prepared low-temperature resistant microbial curing agent is mixed uniformly with sandy soil to obtain solid matter;The obtained solid matter is mixed uniformly with cementing solution, i.e. to obtain light foam sandy soil based on low-temperature resistant microbial curing agent.The technical scheme of the application significantly improves the survival rate and mineralization efficiency of the strain in low-temperature environment, and the light foam sandy soil prepared using the technical scheme has a lower mass per unit volume, higher compressive strength and higher permeability resistance.

The application discloses a method for super-hydrophilic modification of polyamide fiber based on DES combined with multiple enzymes, and belongs to the technical field of functionalized textiles.The method for super-hydrophilic modification specifically comprises the following steps: immersing the polyamide fabric after refining treatment into DES for pretreatment, taking out and drying; then immersing into a protease modification solution for reaction; after the reaction is completed, washing, drying and balancing; then immersing into a mixed solution formed by laccase, TEMPO, trehalose and a buffer solution for reaction; after the reaction is completed, washing, drying, balancing and hydrophilic modification of the polyamide fabric are obtained; the super-hydrophilic modified polyamide fabric can reach a surface static contact angle of 9 degrees within 60 seconds, and the contact angle is reduced by 90.2 percent; the method has low energy consumption, is safe and environmentally friendly, and has good durability of hydrophilic modification.

The application discloses a kind of low reflection high adhesive photo surface treatment method, successively contain photo surface plasma treatment, UV film solution coating solidification, film outer surface plasma treatment etc., core is in UV film solution adding silane coupling agent type passivator;Photo surface uses atmospheric pressure plasma treatment, film outer surface uses low temperature plasma treatment, by controlling plasma treatment power, speed, working gas etc., realize the micro-nano rough structure construction of photo and film outer surface.The application utilizes double plasma treatment to realize physical roughening and reduce reflection, realizes the stability and chemical coupling of plasma activated surface by passivator, greatly improves the bonding strength of photo and film layer, and finally prepared film encapsulation photo film layer transmittance is greater than or equal to 90%, 60 degree glossiness is 10~30GU, while realizing low reflection effect without losing transparency, also has excellent wear resistance, bending performance.

This disclosure relates to a method for strengthening wind turbine blades. The method includes: grinding the surface of the blade body; applying masking tape to the blade body to form a ring structure, thus defining the ground area as a treatment area; applying an elastic protective material to the treatment area to form an elastic protective layer; applying an anti-icing protective layer onto the elastic protective layer; and removing the masking tape. By applying an elastic protective material to the blade body surface and then applying an anti-icing protective layer, a layered protective structure is formed. When the blade rotates, the elastic protective layer provides elastic cushioning for rainwater or sand impacting the blade, thereby protecting the blade body from damage. The anti-icing protective layer, while providing basic protection, also reduces the ice adhesion strength on the blade body surface, thus preventing ice buildup. Furthermore, this method can reduce the difficulty of strengthening the blades of in-service turbines and improve construction efficiency.

The utility model discloses a clamping end for printing equipment, which relates to the technical field of film production, and comprises a first cylinder part, a second cylinder part and a first transition frustum, and the first cylinder part is used for being assembled in a clamping system; the diameter of the second cylindrical part is smaller than that of the first cylindrical part; the first transition frustum is coaxially arranged between the first cylindrical part and the second cylindrical part, the large-diameter end of the first transition frustum is connected with the first cylindrical part, the small-diameter end of the first transition frustum is connected with the second cylindrical part, and the first cylindrical part, the first transition frustum and the second cylindrical part are jointly combined to form a first-step insertion table. According to the clamping end, the stepped inserting table design is adopted, the first transition frustum is arranged between the first cylindrical part and the second cylindrical part, the second transition frustum with the smaller taper is arranged between the second cylindrical part and the third cylindrical part, and a two-stage gradual change structure is formed. By means of the design, the cylinders of different sizes can be installed and borne, and the application range of the clamping end is widened.

The invention belongs to the technical field of concrete, and particularly relates to basalt fiber composite modified sprayed concrete and a preparation method thereof. The basalt fiber composite modified sprayed concrete is prepared from the following raw materials in parts by weight: 420 to 470 parts of cement, 200 to 220 parts of water, 830 to 860 parts of sand, 840 to 880 parts of gravel, 40 to 60 parts of admixture, 15 to 30 parts of modified basalt fiber, 2 to 6 parts of polycarboxylate superplasticizer and 5 to 12 parts of alkali-free accelerator. The modified basalt fiber is added into the sprayed concrete to serve as a reinforcing phase, the strength and impact toughness of the concrete can be improved, and the later strength of the concrete is guaranteed. The cerium trifluoride modified fly ash is added into the admixture, so that the rebound rate can be reduced, and the early strength of the concrete is improved.

This invention relates to the field of parts processing technology, and in particular to a burnishing cutter and its method of use. The burnishing cutter includes a shank, a burnishing element, a bearing, a mounting component, and a locking component. The shank has a mounting hole that matches the burnishing element, and the burnishing element is rotatably mounted in the mounting hole. The shank also has a receiving cavity and a through hole, which are sequentially connected. The bearing is rotatably mounted in the receiving cavity via the mounting component, and the outer ring of the mounted bearing contacts the burnishing element, forming a contact point one. The locking component is located in the through hole and can contact the outer ring of the bearing, forming a contact point two. By adjusting and fixing the position of the locking component, the compressive force it applies to the outer ring of the bearing at contact point two can be changed, thereby adjusting the flexibility of the bearing rotation and changing the relative motion between the burnishing element and the surface of the part. After burnishing high-toughness materials such as titanium alloys using this burnishing cutter, a surface roughness of Ra0.2 can be achieved.

The utility model belongs to the technical field of machining, and particularly relates to a tumbling processing device for a steel pipe, which comprises a processing box body, the top end of the processing box body is fixedly connected with a feeding plate; a grinding mechanism is arranged on the inner wall of the processing box body; a vibration mechanism is arranged in the processing box body; a discharging assembly is arranged in the middle of the inner wall of the processing box body; a chip collecting mechanism is arranged at the bottom end of the processing box body; the polishing mechanism comprises a first motor, a driving shaft, a driving gear, a driven gear and a polishing roller; the first motor is fixedly connected to the side wall of the processing box body; the driving shaft penetrates through the machining box and is rotationally connected with the output end of the first motor. The driving gear and the driven gear are mutually meshed and connected; the middle part of the driving shaft is fixedly connected with a polishing roller; through the structural arrangement of the grinding rollers, the surface roughness is improved through the rolling effect, the surface hardness and the abrasion resistance are improved, meanwhile, tiny surface defects such as scratches and burrs are eliminated, and the comprehensive performance and the appearance quality of the steel pipe are improved.

The application discloses a method for improving the metalization connection strength of n-type Bi2Te3-based thermoelectric elements based on anchoring effect, and comprises the following steps: configuring a n-type Bi2Te3-based wafer surface treatment agent, the composition of which comprises 40-50% sulfuric acid (volume), 1-2% nitric acid (volume), and the rest is water; immersing a clean n-type Bi2Te3-based wafer into the surface treatment agent to perform surface etching; then immersing the etched n-type Bi2Te3-based wafer into ultrapure water to perform ultrasonic treatment; performing metalization connection on the ultrasonically treated n-type Bi2Te3-based wafer through electroplating or chemical plating, the plated metal is easy to form anchoring effect with the n-type Bi2Te3, the metalization connection strength is improved; and finally performing scribing and cutting to obtain the Bi2Te3-based thermoelectric elements with high metalization connection strength. The application makes the n-type Bi2Te3-based wafer have high surface roughness before electroplating, which is beneficial to forming anchoring effect with the plated metal such as nickel, so that the Bi2Te3-based thermoelectric elements with high metalization connection strength are obtained, and the thermoelectric elements are not physically damaged, and the product qualification rate can be improved.

The invention belongs to the technical field of composite board preparation, and particularly relates to a polyurethane honeycomb core composite board preparation device and a preparation method thereof.The polyurethane honeycomb core composite board preparation device comprises a mounting frame, the side wall of the mounting frame is connected with a controller, the upper side wall of the mounting frame is fixedly connected with a supporting frame, and the supporting frame is of an inverted-L-shaped structure; a first electric push rod is fixedly connected to the upper side wall of the supporting frame, and the movable end of the first electric push rod penetrates through the supporting frame and is fixedly connected with a lifting plate. The two back plates of the polyurethane honeycomb core composite plate are roughened in advance, so that the surface roughness of the back plates can be effectively improved, the contact area between an adhesive and the back plates is increased, the interface anchoring effect is enhanced, the bonding strength and interface reliability between the back plates and the adhesive layer and between the back plates and the honeycomb core are remarkably improved, the defects of layering, debonding and the like are reduced, and the service life of the composite plate is prolonged. Meanwhile, the stability and the service life of the plate under high and low temperature, damp and hot and external force are improved.

The application discloses an ultrasonic rolling assisted laser additive manufacturing method and device, and belongs to the technical field of additive manufacturing. The ultrasonic rolling system is fixed on the laser deposition device through a support, and a forming base plate is fixed in a cooling water tank, so that synchronous ultrasonic rolling and temperature regulation and control are realized on a deposited layer in an additive process. By applying ultrasonic vibration in a molten pool solidification stage, grains are refined, and internal defects are reduced. The rolling module adopts a roller type structure design, ensures effective ultrasonic transmission, utilizes the integrated ultrasonic vibration roller to apply high-frequency vibration pressure behind the molten pool, generates plastic deformation on the material in a high-temperature plastic state, reduces residual stress, improves surface roughness, densifies and optimizes the microstructure. Through water cooling temperature control, the influence of thermal accumulation of the deposited layer on the ultrasonic rolling layer is reduced, the interlayer organization consistency is improved, and the overall organization uniformity regulation and performance improvement of the laser additive manufacturing component are realized.

This invention provides a method, apparatus, and semiconductor device for atomic layer etching of hafnium oxide. The method includes performing multiple cycles of etching on the hafnium oxide layer on the top surface of the device to be etched within a reaction chamber until the hafnium oxide layer reaches the target etching requirement. Each cycle includes: adjusting the temperature of the device to be etched to a target reaction temperature; providing a process gas containing a chlorine-based gas; dissociating the process gas into a plasma containing ions and chlorine radicals; filtering the ions in the plasma to obtain chlorine radicals, and reacting the chlorine radicals with the top surface of the hafnium oxide layer at the target reaction temperature to generate a hafnium tetrachloride layer; and heating the device to be etched to a target sublimation temperature to vaporize and discharge the hafnium tetrachloride layer. This invention can reduce the damage to hafnium oxide during etching and achieve higher etching uniformity and precision.

The embodiment of the present application provides a method for reducing rubber pressing defects of medium and high grade silicon steel, and relates to the technical field of silicon steel production process. The method for reducing rubber pressing defects of medium and high grade silicon steel comprises the following steps: reducing the elongation range of a tension leveller; reducing the insertion depth value range of a straightening roll of the tension leveller; and reducing the insertion depth value range of two bending rolls of the tension leveller. The elongation range of the tension leveller is mainly used for straightening the silicon steel. Since the silicon steel is pickled before being straightened, the surface roughness of the silicon steel after pickling is increased. Reducing the insertion depth value range of the straightening roll and the two bending rolls of the tension leveller can reduce the pressing amount of the straightening roll and the bending roll on the surface of the silicon steel plate, reduce the friction between the silicon steel plate and the tension leveller, avoid the rubber on the surface of the work roll from adhering to the surface of the silicon steel plate, eliminate the accumulation of rubber powder, effectively avoid defects on the surface of the silicon steel, and improve the surface quality of the silicon steel.

The application provides a method for improving the bonding force of a neodymium iron boron deposition layer based on a reinforced ion exchange deposition technology, and belongs to the technical field of rare earth permanent magnet material preparation. The method comprises the following steps: neodymium iron boron magnet cleaning pretreatment, removing contaminants and metal oxides on the surface of the magnet; activating the neodymium iron boron magnet by acid corrosion to obtain a pretreated magnet with a rough surface; soaking the pretreated magnet in an electrolyte and connecting the magnet to a negative electrode; and performing ion exchange deposition on the surface of the magnet to be deposited by applying a pulse variable frequency electric field on the surface of the magnet to prepare a deposition layer; wherein, the surface of the magnet is first modified by micro-electrolysis, and then the ion exchange deposition is performed by applying a variable frequency electric field. In the initial stage, the surface of the magnet is continuously subjected to micro-electrolytic corrosion by a stable current to regulate the interface state and then realize surface modification, which is beneficial to the effective bonding of the deposition layer formed by the subsequent ion exchange deposition.

The application relates to the technical field of biosensors, and discloses a glucose sensor with a three-dimensional microcavity and a manufacturing method thereof, wherein the sensor comprises a substrate provided with at least one microcavity penetrating through the substrate; a conductive layer covering at least one side surface of the substrate and an inner wall of the microcavity, wherein the conductive layer located on the inner wall of the microcavity forms a three-dimensional microcavity sensing area; and a sensing film arranged in the three-dimensional microcavity sensing area and used for reacting with glucose to generate an electrochemical signal; the three-dimensional microcavity sensing area simultaneously provides an electrical connection path of the conductive layers on both sides of the substrate and a loading space of the sensing film. The sensor provided by the application has a high specific surface area feature, can improve the accuracy and long-term stability of the sensor, and is suitable for continuous monitoring of glucose and other physiological markers. Moreover, the manufacturing steps are highly standardized, batch production is easy to realize, and the consistency and stability of product performance are good.

This invention relates to the field of composite machining equipment technology, and discloses a CNC milling composite machining equipment for machining ring grooves in hardware. The equipment includes a machine tool, a milling section located on the rear side of the machine tool, and a center support base mounted on the inner wall of the machine tool bottom, in front of the milling section. A gantry slide seat one and a gantry slide seat two are slidably mounted on the right side of the center support base from left to right. This CNC milling composite machining equipment for machining ring grooves in hardware effectively solves the problems in the prior art. When performing composite machining on flange gear shafts, the flange extends from the shaft end to form a cantilever structure. During milling the end face groove, the cutting force is perpendicular to the flange end face, causing bending vibration of the flange. Furthermore, during milling the annular groove, the cutting force is axial, leading to axial movement of the part and causing the depth accuracy of the annular groove to exceed tolerances. Simultaneously, the vibration generated during machining causes wavy grooves on the bottom of the groove and exacerbates tool wear.

This invention discloses a hydrophobic nano-silica modified basalt fiber and its preparation method. The method includes using basalt fiber as a matrix, introducing silicon-oxygen bonds through hydrolysis and condensation with a silane coupling agent, and then constructing a "micro-nano dual structure" through chemical bonding and physical adsorption of hydrophobic nano-SiO2. The hydrophobic nano-SiO2 is trimethylchlorosilane-modified gas-phase SiO2. The preparation process includes three steps: fiber pretreatment, silanization treatment, and nano-SiO2 grafting. By optimizing parameters such as ultrasonic power, reaction temperature, and dispersion concentration, the surface roughness of the modified basalt fiber is improved, enhancing the interfacial adhesion between the basalt fiber and the asphalt matrix. The method is simple and controllable, suitable for asphalt pavement engineering, and improves its durability.

This invention discloses a release film for multilayer ceramic capacitors and its preparation method in the field of polymer composite materials. The release film uses polyethylene terephthalate as the matrix, combined with a bimodal nanoparticle system composed of specific spherical silica and alumina. It innovatively introduces a bifunctional modifier containing perfluoroalkyl and siloxane groups, as well as a hyperbranched multi-arm block polyester siloxane synergistic interface modifier. The preparation process includes key steps such as nanoparticle surface modification, functional masterbatch melt blending and extrusion, and biaxial stretching molding. Through the synergistic effect of the two special modifiers, the dispersibility of nanoparticles in the matrix is ​​significantly improved, and the interfacial bonding strength is enhanced. This results in a release film with extremely low surface roughness and excellent anti-adhesion properties, while also exhibiting good heat resistance and dimensional stability, fully meeting the requirements of high-end multilayer ceramic capacitor manufacturing processes.