548 results about "High surface" patented technology

The invention relates to an antistatic PET (Polyethylene Terephthalate) base film for preparing a polaroid release film and a preparation method thereof, the release film base film is prepared by taking an optical-grade PET slice as a main body, adding modified PET with a specific structure and a modified SiO2 filler, and carrying out co-extrusion casting, a unique three-section stretching process and coating with a coating liquid. According to the invention, material modification and process improvement are carried out, specifically, an optical-grade PET slice is taken as a main body material, modified PET and a modified SiO2 filler with a specific structure are added, a film is prepared through co-extrusion casting and a unique three-section stretching process, and then the surface of the film is coated with a layer of antistatic coating liquid, so that the antistatic film is obtained. The finally prepared base film has low alignment angle, low transverse hot shrinkage rate and high surface adhesion, keeps the characteristics of high light transmittance and low haze of an optical-grade polyester film, endows the film with certain antistatic property, and is particularly suitable for being used as a release film of a high-end polaroid.

The invention discloses a quality detection system based on three-dimensional point cloud scanning and RGB image fusion, relates to the technical field of industrial automatic detection, and aims to solve the problem of high quality detection error rate caused by the fact that a detection result is easily interfered by visual angle change and illumination conditions in an existing detection method. According to the method, the color point cloud model under the unified coordinate system is constructed through space calibration and point pixel level registration, and the structural information and texture features of the workpiece are effectively reserved. Therefore, the problem that the quality detection error rate is high due to the fact that the detected object has curvature dramatic change, a strong reflection area or frequent shielding is solved. According to the method, the detection accuracy is improved, meanwhile, the robustness and the operation efficiency are high, the industrial workpiece detection requirements with complex curved surface structures and high surface quality requirements can be met, and the actual application requirements of an industrial site for an intelligent surface detection system are met.

The invention relates to the technical field of high polymer material processing, in particular to a blow molding method of a composite toughened film, which comprises the following steps: step 1, preheating matrix resin in preheating equipment; 2, feeding the mixed raw materials into a double-screw extruder for melt blending; 3, feeding the dried composite particles into a hopper of a single-screw blow molding extruder; 4, adjusting the air volume and the air pressure of the cooling system according to the monitoring result; and 5, the formed film pipe is folded into a flat shape through a guide component and led out through a traction roller, the traction speed and the extrusion speed are coordinated to control the traction ratio, corona treatment is conducted on the surface of the thin film to improve the surface energy, then rolling tension is controlled for rolling, and the rolling tension is controlled according to the elasticity and thickness of the thin film to prevent excessive stretching or loosening. The uniform distribution and proper compatibility of the composite toughening component improve the toughness of the film, and maintain the strength and barrier property of the film.

The invention belongs to the technical field of satellite-borne optical remote sensing imaging, and relates to a multi-point flexible adhesive supporting structure of a large-aperture satellite-borne rectangular lens group and an integration method. The supporting structure comprises a rectangular mirror body, an integrated rectangular mirror frame and an anti-radiation back plate; the rectangular mirror body is embedded into the integrated rectangular mirror frame; the integrated rectangular mirror frame is detachably connected with the anti-radiation back plate; bonding ring assemblies are mounted on the periphery of the integrated rectangular mirror frame, and the four side faces of the periphery of the rectangular mirror body are fixedly connected with the bonding ring assemblies in a bonding mode; the lower side bonding ring assembly and the upper side bonding ring assembly are matched in a one-rigid-one-flexible mode, and the right side bonding ring assembly and the left side bonding ring assembly are matched in a one-rigid-one-flexible mode. And the one-rigid and one-flexible matching form is that one component adopts a rigid structure, and the other component adopts a flexible structure. The problems of high surface shape precision microstress, high stability, space radiation resistance, universality of a supporting structure and the like of an existing satellite-borne rectangular mirror body are solved.

The invention discloses a composite material hollow plate and a preparation method, and belongs to the technical field of composite material plate preparation. The composite material hollow plate comprises an outer plate and an inner plate, a plurality of corrugated supporting structures are connected between the outer plate and the inner plate, and a cavity is formed between every two adjacent corrugated supporting structures. A wear-resistant reinforcing agent is added into an outer plate material to improve the surface wear resistance, an epoxy-amine dual-core double-wall microcapsule is introduced into an inner plate material to enhance the crack repairing capacity, and a shape memory reinforcing agent is added into a corrugated supporting structure material to endow the material with the shape memory characteristic. The invention solves the technical problems of difficulty in consideration of strength and toughness, short service life, poor buffer performance, insufficient interface bonding strength and the like of the existing composite material hollow plate, and is particularly suitable for steel coil packaging and other application scenes requiring repeated use and high reliability.

The invention belongs to the technical field of coated glass, and particularly provides a deposition method of a metal seed layer in TGV metallization and magnetron sputtering equipment. The invention aims to solve the problem of serious surface discharge phenomenon caused by low adhesive force between a metal film and a glass substrate, low metal coverage rate and step rate in a through hole and high accumulated charge on the surface of glass in the existing TGV metallization process. The independent and controllable ion source is introduced to assist deposition, the ion source is started at different stages of metal film deposition, and directional and high-energy positive ion flow generated by the ion source is utilized to bombard the surface of the glass substrate so as to assist the magnetron sputtering process, so that the surface of the glass substrate is subjected to magnetron sputtering. Through shallow ion implantation, enhancement of surface migration energy of deposited metal atoms and neutralization of negative charges accumulated on the glass surface, the adhesive force between metal and a glass substrate is improved, the metal coverage rate and the step rate in a through hole are improved, surface discharge is inhibited, and therefore the process stability is improved.

The invention discloses a high-surface-quality invar alloy cold-rolled steel strip and a manufacturing method thereof.The manufacturing method comprises the working procedures of acid pickling, cold rolling and pre-pressing, coping, cold rolling and rolling, cleaning, annealing, leveling, shearing and packaging, the surface of an invar alloy hot-rolled steel coil is subjected to acid pickling through a mixed acid solution, cold rolling and pre-pressing are conducted through three-pass cold rolling and rolling, and the surface quality of the invar alloy hot-rolled steel coil is improved. At least three pairs of grinding heads are adopted for grinding, the grinding frequency is not less than 3 times, multi-pass cold rolling is carried out after grinding, the number n of rolling passes meets the condition that n is larger than or equal to 0.5 * m + 1, m is the thickness of the ground cold-rolled steel strip, and the unit is mm. According to the method, the technical problems that the surface quality of the invar alloy cold-rolled strip is difficult to control, the requirement is high and the like can be effectively solved, invar alloy products with high surface quality and high plate shape requirement are prepared, and the high-surface-quality use requirement of a user is met.

The invention discloses a positioning racking system for coating a large-size optical element. The positioning racking system comprises a main body structure, a lifting mechanism, a rotary bearing platform, a movement mechanism and a safety protection mechanism. A main body structure adopts a rigid design of composite support of a tripod and a tailstock. The lifting mechanism drives double ball screws to move synchronously through a worm and gear speed reducer, and precise lifting of the bearing platform is achieved. The rotary bearing platform can freely rotate by 360 degrees and is provided with a balance weight groove to adjust the gravity center. And the movement mechanism realizes flexible movement and stable support of the system. The safety protection mechanism integrates inclination angle, overload and limiting detection. The problems that a large-size and high-surface-shape-precision optical element is difficult to mount and position and poor in operation safety in the coating process are solved, and auxiliary mounting and positioning of a tool are safely, conveniently and precisely completed outside a coating machine.

The utility model discloses concrete 3D printing equipment which comprises a guide rail, a mechanical arm and a driving part for driving the mechanical arm to move along the guide rail, and a printing head set and an edge scraping part are arranged at the movable end of the mechanical arm. And the edge scraping part comprises two groups of scraping plates which are symmetrically arranged and is provided with an adjusting part, and the opening degree of the scraping plates is controlled through the adjusting part, so that the edge of the printed concrete is cleaned. The equipment further comprises a first linear module used for driving the edge scraping component to ascend and descend so as to adjust the edge cleaning mode in the printing process. The printing head set is composed of a fixed head and a movable head, the movable head is provided with a rotating part and a second linear module and used for adjusting the distance between the movable head and the fixed head, and therefore different printing requirements are met. The equipment can automatically adjust the position of the scraping part, accurately clean concrete edge residues, improve the printing quality and reduce manual intervention, and is particularly suitable for building projects with high surface quality requirements.

The invention relates to a polishing method of a semiconductor material, in particular to a chemical mechanical polishing method of an InP (Indium Phosphate) substrate, and aims to solve the problems of complex polishing solution formula, high cost, poor suitability of process parameters and InP materials and high surface defect rate in the conventional polishing method. The method comprises the steps of (1) preparing a polishing solution, (2) preparing a circular InP substrate, (3) setting technological parameters and polishing the circular InP substrate, and (4) carrying out acid treatment.The method has the advantages that the polishing solution is simple in formula and low in cost, the surface roughness Ra after polishing is extremely small, defects are few, the technological stability is good, and the method is suitable for industrial production.

The invention discloses an aviation composite material paddle and a preparation method thereof, and the preparation method comprises the following steps: curing a carbon fiber prepreg by using a mold pressing process to prepare a carbon beam as a main bearing structure; a carbon beam and a light core material are used as internal supports through a three-dimensional weaving technology, a skin is formed through wrapping and weaving, and an integrated fiber prefabricated body is obtained; preparing a toughened resin system for RTM (resin transfer molding), wherein the toughened resin system comprises liquid resin capable of being thermally cured, a curing agent and a carbon nanotube subjected to surface chemical modification; and placing the fiber preform in a mold, closing the mold, injecting the toughened resin system into a mold cavity, curing, and demolding to obtain the aviation composite material paddle. According to the invention, the preparation of the composite material paddle with high surface precision, light overall weight and excellent impact toughness is realized, and the preparation method is good in process repeatability and suitable for batch production.

The invention discloses an integrated fiber-reinforced thermoplastic prepreg tape as well as a preparation method and application thereof, and relates to the technical field of composite materials, the preparation method comprises the following steps: preparing a fiber-reinforced thermoplastic prepreg tape base material to be subjected to hot-press compounding and a wave-absorbing resin film; preheating the surface to be treated of the fiber reinforced thermoplastic prepreg tape base material; and laminating the wave-absorbing resin film on the to-be-treated surface of the preheated fiber-reinforced thermoplastic prepreg tape base material, carrying out hot-pressing compounding, fusing the wave-absorbing resin film with the resin on the to-be-treated surface of the fiber-reinforced thermoplastic prepreg tape base material, and cooling to obtain the integrated fiber-reinforced thermoplastic prepreg tape finished product. On the premise that the original excellent mechanical property of the prepreg tape is hardly influenced, the broadband wave-absorbing function is efficiently and stably integrated, the thermoplastic prepreg tape which is high in surface quality, high in interface bonding and integrated in structure and function is successfully prepared, and the thermoplastic prepreg tape has a wide application prospect in the field of high-end equipment such as aerospace and national defense military industry.

The invention discloses a graphene-based heat conduction film with a stable interface and a preparation method of the graphene-based heat conduction film. When the graphene film is prepared, a substrate with a reticulate pattern structure with a specific size is utilized, on one hand, separation of a graphene oxide precursor film with high surface energy from a matrix is facilitated, and on the other hand, more stable nucleation sites and interlocking interfaces are provided for in-situ growth of subsequent carbides. According to the in-situ growth method, a layer of superhard carbide coating which is compact in structure and is combined through strong chemical bonds can be generated on the surface of graphene in situ, the carbide coating can form a superstable interface with graphene, the graphene film is effectively protected, and the abrasion resistance, impact resistance and space environment erosion resistance of the graphene film are greatly improved.

The invention provides a ZIF-67 (at) Co / HPLFM composite material and a preparation method and application of the ZIF-67 (at) Co / HPLFM composite material, and the preparation method comprises the following steps: providing a hollow porous straw lignin fiber membrane (HPLFM); cobalt salt is dissolved in absolute ethyl alcohol, the hollow porous straw lignin fiber membrane is taken and placed in the mixed solution, absolute ethyl alcohol dissolved with 2-methylimidazole is dropwise added into the mixed solution after oscillation, and oscillation continues for a period of time; taking out the hollow porous straw lignin fiber membrane, washing, and freeze-drying to obtain a precursor material; and carrying out high-temperature calcination on the precursor material to obtain the ZIF-67 (at) Co / HPLFM composite material. The high surface activity and the porous hollow structure of the hollow porous straw lignin fiber membrane are utilized, ZIF-67 is loaded on HPLFM, the ZIF-67-coated Co / HPLFM composite material is obtained through further treatment, and the material has high specific surface area and excellent adsorption performance and has good application prospects in organic pollutant degradation by activating peroxymonosulfate.

The invention relates to a low-alignment-angle high-heat-resistance release film base film for a polaroid and a preparation method thereof, and the release film base film is prepared by taking an optical-grade PET slice as a main body material, adding modified PET and modified SiO2 filler with a specific structure, and carrying out co-extrusion casting and a unique three-section stretching process. According to the modified PET, a 2-(pyridine-3-yl) terephthalic acid comonomer and ionic liquid intercalated montmorillonite are introduced, so that the rigidity and heat resistance of a molecular chain are improved, and a heterogeneous nucleation point is provided; the surface of the modified SiO2 filler is grafted with a terpolymer, so that good compatibility with a matrix and internal lubrication are realized; according to the preparation method, a transverse-longitudinal-transverse three-section stretching sequence and step-by-step increasing temperature control are adopted to cooperatively regulate and control orientation and crystallization of molecular chains; and finally, the optical-grade polyester film with low alignment angle, low transverse thermal shrinkage rate and high surface adhesion is prepared, and is particularly suitable for being used as a release film of a high-end polaroid.

The invention relates to a talcum powder filled polypropylene composite material based on surface modification and process cooperation and an injection molding pocking mark defect inhibition method. The material is composed of co-polypropylene, acidic salt-titanate composite modified talcum powder, flaky mica (5-10 [mu] m), a POE flexibilizer, a zeolite molecular sieve, an MAH-g-PP compatilizer, a zinc stearate dispersant and the like. According to the invention, the three measures of surface modification treatment, formula design and process purification technology are combined, and the problem of pitting defects (surface pits and white spots) generated in the injection molding process of the talcum powder filled polypropylene composite material is mainly solved. Through filler surface modification treatment, formula design and a process purification technology, the hard spot defect rate is reduced by about 85%, and the method is suitable for products with high surface quality requirements, such as automobile bumpers and instrument panels.

The invention relates to an intelligent roller grinding method for producing high-surface-grade strip steel. The intelligent roller grinding method comprises the steps that S1, the surface of a roller is plated with chromium; s2, a model approximator of the relation between the roller surface roughness and the grinding process state parameters is established; wherein the grinding process state parameters comprise the roller speed, the grinding depth and the grinding wheel speed; and intelligent roughness identification is achieved by optimizing state parameters in the grinding process. According to the method, the surface roughness of the roller is predicted online by establishing the roughness and grinding process state parameters, so that high-quality and high-efficiency production of cold-rolled high-grade surface products is supported, and it is guaranteed that a unit operates stably and the product quality meets the requirement.

This invention relates to a wear-resistant shovel blade for engineering machinery and its preparation method, belonging to the field of engineering machinery parts manufacturing technology. The specific preparation method involves: after rolling, quenching, and high-temperature tempering, the shovel blade material undergoes carburizing treatment using ion plating. Then, a W transition layer and a WTiTaB boride gradient coating with varying composition are prepared using magnetron sputtering. This invention combines the WTiTaB boride gradient coating, physical vapor deposition, and carburizing technology, which can mitigate the difference in physical properties between the boride coating and the substrate material of the shovel blade, improve the surface hardness and support of the substrate material, and result in high surface hardness, core toughness, and excellent tribological properties. Compared with traditional carburizing processes, the surface hardness is increased by nearly three times, the surface treatment time is shortened by more than 90%, and the wear rate is reduced by 78-83%.

A micro-electromechanical-system (MEMS) device may be formed to include an anti-stiction polysilicon layer on one or more moveable MEMS structures of a device wafer of the MEMS device to reduce, minimize, and / or eliminate stiction between the moveable MEMS structures and other components or structures of the MEMS device. The anti-stiction polysilicon layer may be formed such that a surface roughness of the anti-stiction polysilicon layer is greater than the surface roughness of a bonding polysilicon layer on the surfaces of the device wafer that are to be bonded to a circuitry wafer of the MEMS device. The higher surface roughness of the anti-stiction polysilicon layer may reduce the surface area of the bottom of the moveable MEMS structures, which may reduce the likelihood that the one or more moveable MEMS structures will become stuck to the other components or structures.

The invention provides composite laser shock peening equipment and a turbine blade laser shock peening method. The composite laser shock peening equipment comprises a first laser, a second laser, a third laser and a fourth laser, wherein the first laser outputs large-energy laser shock with single pulse energy larger than 1J to a first target area; the second laser outputs small-energy laser shock with single pulse energy at dozens of to hundreds of mJ levels to a second target area; the movement system is used for clamping and moving the to-be-machined part to the first target area or the second target area; the water restraint loading system is used for applying a water restraint layer; and the control system is used for adjusting working parameters of the modules. The invention further provides a turbine blade composite laser shock peening method implemented through the equipment, and the problem that double requirements of improvement of deep residual compressive stress and improvement of high surface residual compressive stress cannot be considered in a single process mode is solved through a large-energy and small-energy composite laser shock peening process.

This invention relates to the field of laser cladding technology, specifically to a broadband coaxial laser cladding equipment, comprising a protective shell with a nozzle module fixedly connected to its surface; and a feeding module fixedly connected to the surface of the protective shell for directional conveying of a metal sheet, the metal sheet passing through the inner side of the nozzle module. This invention, by incorporating a spot shaping component, can convert a circular laser spot into a rectangular spot. Furthermore, by combining the metal sheet as the cladding material, compared to traditional circular spot and metal powder cladding methods, it effectively increases the width of a single cladding pass and the scanning coverage area per unit time. This effectively solves the problems of excessively long process cycles and low processing efficiency in the manufacturing and remanufacturing of large parts, achieving large-area rapid cladding. Simultaneously, as the cladding material is a metal sheet, it avoids the problems of high surface roughness, low powder utilization, and severe environmental pollution caused by powder adhesion.

The invention discloses a macro-micro cooperative driving cable parallel spraying robot for the surface of large equipment. The robot is composed of a macro robot, a moving platform and a spraying module. The macro robot adopts a detachable metal static platform frame and a four-drive rope to cooperatively control multi-degree-of-freedom movement of a disc-shaped movable platform, and three-dimensional accurate positioning is achieved through an XY linear translation table and a scissor type lifting mechanism. The innovativeness lies in that four-wheel-drive parallel rope layout and model prediction anti-interference control are adopted, and vibration errors are effectively restrained; a micro mechanical arm and a four-axis linkage rotating platform are integrated, and multiple sensors are arranged to achieve high positioning precision; a four-head atomizing nozzle system is innovated, spraying of primer, colored paint and varnish is completed through 90-degree step-by-step rotation, and the high surface coverage rate is achieved through an S-shaped alternate path. And the color paint saturation is controlled by combining six-valve flow. The device can be quickly reconstructed to adapt to different working conditions, the spraying efficiency is greatly improved, and the device is particularly suitable for high-quality spraying operation of large equipment such as airplanes and ships.

The utility model discloses a wide wood bamboo board high-precision vertical fragmentation device, which comprises a frame and a fragmentation mechanism arranged on the frame, the fragmentation mechanism comprises a transmission belt, a hold-down mechanism and a saw blade, the transmission belt is vertically arranged so that the transmission surface faces the side surface, and the hold-down mechanism is arranged on the transmission belt. The saw blade is arranged in front of the conveying belt in parallel and is used for cutting and slicing conveyed materials when moving up and down, the two groups of pressing mechanisms are respectively arranged in front of the conveying belt relative to the front sequence and the rear sequence of the saw blade, and the pressing mechanisms are matched with the conveying belt to clamp and limit the materials and convey the materials when the conveying belt runs. According to the utility model, uniform thickness and high surface precision of sliced wood-bamboo plates are ensured; the processing efficiency is improved, the labor intensity is reduced, the manufacturing cost is reduced for enterprises, meanwhile, the processing precision of the sliced wide-width wood-bamboo boards is guaranteed, and the defective rate is reduced.

This invention relates to the technical field of granite workpiece processing, and in particular to a granite workpiece grinding device and method. The device includes a frame, a gantry frame mounted on the frame via a traveling mechanism, a lifting mechanism mounted on the gantry frame, a sliding mechanism mounted on the lifting mechanism, and a grinding mechanism mounted on the sliding mechanism via a mounting mechanism. The grinding mechanism includes a granite grinding plate, a handle mounted on the granite grinding plate, and multiple diamond-shaped grooves formed on the end face of the granite grinding plate away from the handle. This invention achieves high surface grinding precision and efficiency for granite workpieces.

The invention relates to automobile film surface protection, and provides a scratch-resistant coating composition and a preparation method thereof. The composition is prepared from polymer resin containing an acrylate group, polysiloxane acrylate containing a hydrolyzable alkoxy silicon group, composite silane modified double-particle-size nano silicon dioxide, a photoinitiator, an organic silicon cross-linking agent and an auxiliary agent, wherein the nano silicon dioxide is composed of a small-particle-size group and a large-particle-size group; and gamma-methylacryloyloxypropyl silane and gamma-glycidoxypropyl silane are respectively grafted to the two monomers. A micro-thin transparent hard coating is formed on the surface of a polyester base material through staged ultraviolet curing and damp-heat curing, so that the coating has high surface hardness and abrasion resistance and excellent damp-heat aging adhesive force and whitening resistance while keeping high light transmittance and low haze.

The present application relates to a kind of compositions that can be engraved with high surface hardness white mark and its preparation method and application.The compositions that can be engraved with high surface hardness white mark include polymethyl methacrylate, styrene-acrylonitrile copolymer, acrylate rubber and black and white laser marking agent.The compositions that can be engraved with high surface hardness white mark provided by the present application are black and white after laser, and the white mark obtained has the same surface hardness as the composition before engraving, showing excellent scratch resistance.

The invention provides a silicon wafer surface grinding method and device. The method comprises the steps that a first supply unit is controlled to supply a first grinding material to a grinding area; receiving and responding to the switching signal; controlling a second supply unit to supply a second grinding material to the grinding area; wherein the first grinding material and the second grinding material are different in particle size. An automatic switching double-mortar-barrel liquid supply mode is adopted in a single process of the same equipment, large-particle-size grinding materials are adopted in the coarse grinding stage so that the material removal efficiency can be improved, small-particle-size grinding materials are automatically switched in the fine grinding stage so that surface damage generated in the coarse grinding stage can be removed, the product yield and quality are improved, and the product quality is improved. And the cost and the risk caused by multi-equipment processing are avoided, and the silicon wafer with high surface quality is efficiently obtained.

The application discloses a preparation method of iron-based metal hollow spheres, and belongs to the technical field of porous metal materials. The method comprises the following steps: coating stainless steel powder on the surface of anhydrous calcium chloride spherical particles by mechanical mixing with anhydrous ethanol as a binder to obtain composite particles, and then sequentially drying, sintering and ultrasonic cleaning to obtain the iron-based metal hollow spheres; the sintering comprises the following steps: first, drying the composite particles and then keeping the temperature at 750 DEG C for 60-120 min; then keeping the temperature at 800 DEG C for 30-120 min; finally, increasing the temperature to 1100 DEG C-1200 DEG C and keeping the temperature for 120-180 min. The preparation method has the advantages of controllable process, high product yield, low cost, mass production and the like. In addition, the pore size, wall thickness and particle size of the iron-based metal hollow spheres prepared by the method can be flexibly controlled, and the metal hollow spheres have high surface density, good sphericity and high strength.

The present invention provides a slurry composition in which magnetic material powder has excellent dispersibility and excellent dispersion stability and which enables production of a sheet having high surface smoothness and high adhesiveness to substrates. Provided is a slurry composition containing: a polyvinyl acetal resin; magnetic material powder; and a Na ion, the slurry composition having a Na ion content of 1,000 to 3,000 μg / g relative to the polyvinyl acetal resin.

The invention concerns a method for producing a 6xxx series aluminium sheet comprising the steps of homogenizing an ingot made from a 6XXX series aluminium alloy; cooling the homogenized ingot with a cooling rate in a range of from 150° C. / h to 2000° C. / h directly to the hot rolling starting temperature; hot rolling the ingot to a hot rolling final thickness and coiling at the hot rolling final thickness with such conditions that at least 90% recrystallization is obtained while controlling the temperatures of hot rolling, in particular the relationship between the hot rolling starting temperature and the hot rolling exit temperature and / or controlling the grain size after coiling; cold rolling to obtain a cold rolled sheet.