55results about How to "Improve surface smoothness" patented technology

The utility model discloses an elastic nylon fabric which comprises a fabric layer, the fabric layer is formed by interweaving warp yarns and weft yarns in a plain weave mode, the warp yarns are of a ZS double wrap yarn structure formed by wrapping spandex with low-denier nylon, the twisting mode is that Z twisting and S twisting are conducted at the same time, and the twisting degree ranges from 1800 twists to 2000 twists. According to the elastic nylon fabric, a ZS double-wrapping structure is adopted in the warp direction of the elastic nylon fabric, the overall tension of wrapping yarn is ensured, and the elasticity and stability of the fabric are improved. Meanwhile, by adjusting the density in the warp direction and the weft direction, the fabric not only has an excellent cool feeling effect, but also has good anti-ultraviolet performance, and the air permeability is optimized.

The invention belongs to the field of stainless steel pickling, and particularly relates to an austenitic stainless steel whole-hydrochloric-acid-based stepped pickling method. At present, stainless steel pickling is mainly based on a mixed acid pickling (nitric acid and hydrofluoric acid) system, the problem of three-waste discharge exists in the pickling process, the pickling process is only suitable for removing ferritic stainless steel with weak binding force between an oxide layer and a metal matrix through pickling, and the oxide layers on the surfaces of ferritic cold plate stainless steel and austenitic stainless steel are difficult to remove. In order to solve the problems, hydrochloric acid is used for providing an acid environment, a pre-pickling and grading final pickling cooperative treatment method is adopted, a compact oxide layer on the surface of the austenitic stainless steel can be effectively removed, surface polishing and surface passivation can be achieved through the anodic polarization effect, and the stainless steel surface after pickling is free of pitting corrosion and intergranular corrosion phenomena; and the pickled stainless steel surface has high smoothness, the leveling and polishing quality of the BA plate can be remarkably improved, meanwhile, the production cost is low, and pickling waste liquid can be regenerated and recycled.

The present invention is a film-forming method for heat-treating a raw material solution atomized into a mist and performing a film-formation, and the method includes the following steps: atomizing the raw material solution or making the raw material solution into droplets to generate a mist; conveying the mist to a film-forming part by a carrier gas; and supplying the mist from a nozzle to a substrate, heat-treating the mist on the substrate, and performing the film-formation in the film-forming part, wherein with the area of an opening surface of the nozzle being S [cm2], the longest distance among distances between points in the opening surface and the surface of the substrate being H [cm], and the flow rate of the carrier gas supplied from the nozzle being Q [L / min], SH / Q≥0.015 results. Thus, the present invention provides: the film-forming method for suppressing abnormal growth and forming a film having good surface smoothness.

The invention provides a low-water-absorption glass bead modified PBT (polybutylene terephthalate) material and a preparation method thereof. The low-water-absorption glass bead modified PBT material comprises the following components in parts by weight: 70-100 parts of PBT resin; 0 to 30 parts of solid glass beads; 0-5 parts of a toughening agent; 0-2 parts of an antioxidant; 0-2 parts of a lubricant; 0-2 parts of black color master batch; 0-2 parts of a coupling agent; 0-5 parts of polytetrafluoroethylene wax; wherein the average particle size of the solid glass beads is 1-50 [mu] m; the average particle size of the polytetrafluoroethylene wax is 3-15 [mu] m, and the weight-average molecular weight of the polytetrafluoroethylene wax is 10000-30000 g / mol; the weight ratio of the solid glass beads to the polytetrafluoroethylene wax is (5-10): 1. According to the invention, the polytetrafluoroethylene wax is added into the solid glass bead modified PBT material, so that the shrinkage difference between the material flow direction and the vertical flow direction is effectively reduced, the water absorption rate of the material is remarkably reduced, the preparation process is simple, and the production process is easy to control.

A problem to be addressed by the present invention is to enable a plating layer having excellent surface smoothness to be formed without compromising the various excellent properties inherent in polyphenylene sulfide resins, and to provide a plated molding which is excellent in adhesiveness of the plating layer and ensures high plating quality even in severe environmental degradation tests such as thermal shock cycle tests as well as a method of producing thereof. To solve the above problem, a main object of the present invention is to provide plated molding having a plating layer formed on a part or all of the surface of the molding that is molded with a polyphenylene sulfide resin composition including 30 to 200 parts by weight of a fibrous filler (B) based on 100 parts by weight of a polyphenylene sulfide resin (A), wherein an arithmetic mean roughness of the surface of the plating layer of the plated molding is 1.5 µm or less.

The preparation method of the yellowing-resistant nylon particle composite material comprises the following steps: S1, weighing 100 parts by weight of nylon, and adding the nylon into a reaction kettle; s2, adding 2, 2, 2-trifluoroethanol as a solvent into the reaction kettle, and stirring to form a uniform nylon dissolving solution; s3, conveying the nylon dissolving solution into a spray dryer through a peristaltic pump, and performing atomization, drying and powder collection under the protection of nitrogen; s4, placing the powder in a vacuum drying oven, and drying at 25 DEG C for 3 hours to obtain nylon powder; s5, mixing the nylon powder with the following raw materials in parts by weight: 1-2 parts of an ultraviolet light absorber, 1-2 parts of a hindered phenol antioxidant, 2-4 parts of adipic acid, 0.5-1.5 parts of sebacic acid, 0.1-0.5 part of dicumyl peroxide and 8-10 parts of silane coupling agent modified mica powder; and S6, carrying out melt blending on the mixture obtained in the step S5 in a twin-screw extruder to obtain the yellowing-resistant nylon particle composite material.

The utility model discloses a high-strength glass fiber pipe with a paint-free and highlight surface, which is characterized in that the pipe wall of the glass fiber pipe comprises an inner PET (polyethylene terephthalate) cloth layer, a middle structure layer and an outer PET cloth layer from inside to outside, the middle structure layer comprises a resin layer formed through a compression molding process and glass fiber filaments distributed in the resin layer or a plurality of glass fiber rods penetrating through the resin layer and extending in the axial direction, and pores of the outer PET cloth layer are filled with resin permeating outwards in the compression molding process; pores of the inner PET cloth layer are filled with resin which permeates inwards in the mold pressing process. During forming, part of resin of the resin layer penetrates through and fills pores of the outer PET cloth layer and the inner PET cloth layer, so that the surface smoothness is improved; by means of the colors of the outer PET cloth layer and the inner PET cloth layer, surface processing is not needed, the bottom exposure phenomenon is avoided, the production steps are simplified, the production efficiency is improved, and the production cost is reduced; and the resin penetrates through the outer PET cloth layer and the inner PET cloth layer to form an interlocking structure, so that the interlayer peeling strength is improved, and layering is prevented.

The invention belongs to the technical field of electric mechanism tests, and relates to an electric mechanism balancing detection loading device and method, and the device comprises a loading unit and a control unit. The loading unit is used for loading the tested electric mechanism; the control unit is used for controlling the loading unit to simultaneously acquire the load and the displacement of the tested electric mechanism under load; and whether balancing is carried out or not is judged according to the load and displacement of the loaded electric mechanism. The loading unit comprises a reduction gear motor, a chain, a magnetic powder clutch, a rack, a displacement sensor and a tension and compression sensor; the reduction gear motor drives the magnetic powder clutch through a chain; the magnetic powder clutch drives the rack, one end of the rack is connected to the loading platform after being connected with the displacement sensor, the other end of the rack is connected with the tested electric mechanism, and the other end of the tested electric mechanism is connected to the loading platform after being connected with the tension and compression sensor.

This invention belongs to the field of papermaking and provides a high-efficiency antibacterial and mildew-resistant liquid crystal glass spacer paper and its preparation method. It includes: (1) Base paper preparation process: 100% bleached softwood pulp is selected as fiber raw material, pulped to 22-28°SR, without adding any wet end additives to ensure the cleanliness of the base paper, formed on the wire in the headbox, and then dewatered in the press section to obtain a basis weight of 48-52 g / m 2 (2) Surface treatment process: Select hydrophobically modified polyvinyl alcohol, mildew inhibitor and water-resistant agent to prepare surface sizing solution, the concentration of surface sizing solution is 2-4%, and apply sizing solution to the surface of the base paper, the amount of sizing is 0.8-2g / m 2 After drying in a drying cylinder, the material is calendered and then rolled to obtain a high-efficiency antibacterial and anti-mildew liquid crystal glass spacer. The liquid crystal glass spacer prepared by this method has good hydrophobic properties and anti-mildew effect, while also taking into account the characteristics of high cleanliness, low electrical conductivity, and high surface strength.

The present application discloses a micro-electromechanical structure and a manufacturing method thereof, a wafer, a microphone and a terminal. The manufacturing method comprises: forming a first back plate above a substrate; forming a second sacrificial layer on the first back plate; forming a diaphragm on the second sacrificial layer, the diaphragm extending to the substrate along the side wall of the second sacrificial layer and the side wall of the first back plate; and removing part of the second sacrificial layer, with the remaining second sacrificial layer serving as a second supporting portion. The manufacturing method reduces the risk of the release liquid corroding the side wall of the second sacrificial layer during the release process by allowing the diaphragm to cover the side wall of the second sacrificial layer.

The application provides a UV white ink and a preparation method thereof. The preparation raw materials of the UV white ink include, in parts by weight, 3-15 parts of silicone-modified acrylate prepolymer, 30-90 parts of monofunctional monomer, 1-10 parts of bifunctional monomer, 3-10 parts of photoinitiator, 1-15 parts of titanium white, 0.1-5 parts of dispersant and 0.1-5 parts of auxiliary agent. The silicone-modified acrylate prepolymer is used to improve the flexibility, smoothness and water resistance of the ink layer, and the specific functional monomer compound system is used to inhibit the curing shrinkage and enhance the adhesion, so that the UV white ink with excellent comprehensive performance is obtained, and is suitable for the inkjet printing of silica gel labels.

The utility model discloses a film surface acoustic wave resonator and a film surface acoustic wave filter, and relates to the field of semiconductor devices, at least one intermediate layer is inserted into at least one dielectric layer of the film surface acoustic wave resonator, so that the physical strength of the dielectric layer inserted with the intermediate layer can be improved, and the relatively thin dielectric layer has a relatively good fracture prevention effect; and for the relatively thick dielectric layer, the middle layer can help to improve the flatness and the surface smoothness in the material growth or sputtering process, so that the relatively thick dielectric layer can avoid relatively large roughness in the forming process. And the thickness of each inserted middle layer is less than 0.2 lambda, so that the propagation of a main acoustic mode is not directly influenced, but for other miscellaneous modes, due to the difference of acoustic propagation paths, reflection is generated at the positions of the middle layers to a certain extent, so that the resonance condition of the miscellaneous modes is destroyed, and the energy dissipation is reduced. And the energy is further limited in the reflection region, so that the Q value of the resonator can be further improved.

A method for forming a semiconductor structure includes: providing a substrate; forming a conductive structure material layer on the substrate; forming a mask layer on part of the conductive structure material layer; forming a repair film on the sidewall surface of the mask layer, wherein the roughness of the repair film surface is lower than that of the sidewall surface of the mask layer; etching the conductive structure material layer using the mask layer and the repair film as masks to form a plurality of conductive structures on the substrate. Thus, the performance of the semiconductor structure is improved.

The invention discloses a preparation method of a terylene gigging fabric, and belongs to the technical field of terylene fabrics, the preparation method of the terylene gigging fabric adopts a preparation method of first sanding and then flocking, the surface performance of the fabric is improved by first sanding, fluff is easy to adsorb, and the fluff is easy to adsorb by adopting a process of first sanding and then flocking. Easily-broken long fluff can be removed, the surface smoothness of the fabric can be improved, the color fastness can be improved to a great extent, the defects that a cloth cover wrinkles and fluff does not come out at the wrinkles are avoided, the fluff density and the fluff uniformity of the cloth cover are improved, the fluff is full, upright and uniform, the suede is soft and smooth, the soft touch feeling of the surface of the fabric is improved, and the stiff and smooth degree is similar to that of genuine leather; and the wear-resisting property is good. In the prior art, a one-step flocking process is adopted and then fluff is treated, but flocking is performed firstly and sanding is performed in a direction opposite to the movement direction of base cloth, so that the fabric has the defect of easy hemming, the process flow is difficult to carry out, and the plump and upright particle fluff effect cannot be obtained.

The invention discloses a superfine fiber water-based polyurethane foamed synthetic leather, comprising a base fabric and a foamed water-based polyurethane layer; the base fabric is a double-layer structure with a surface layer and an inner layer, the surface layer is a nap layer, and the inner layer is a lattice layer; the base fabric comprises a surface weft, an inner weft, a surface warp and an inner warp; the surface weft, the inner weft, the surface warp and the inner warp are all superfine fiber yarns; the surface weft and the surface warp are interwoven into the surface layer of the base fabric using a surface tissue, and the inner weft and the inner warp are interwoven into the inner layer of the base fabric using an inner tissue; the surface tissue is a satin texture with five three-fly wefts, and the inner tissue is a plain weave; the surface layer and the inner layer are connected by nodes formed by interweaving the surface warp and the inner weft, and nodes formed by interweaving the inner warp and the surface weft; the lattice layer of the base fabric has pores for water-based polyurethane to enter the base fabric, and the foamed water-based polyurethane layer is filled between the surface layer and the inner layer of the base fabric. The superfine fiber water-based polyurethane foamed synthetic leather has a good sense of thickness, a soft and delicate hand feel, a good surface smoothness and a good air permeability and water absorption.

This utility model discloses a packing assistance device for partitions, comprising two sets of guide assemblies respectively disposed on both sides of the upper end of the box. Each guide assembly includes a vertically positioned limiting guide plate parallel to the side wall of the box, and an auxiliary guide plate disposed on the outer side of the limiting guide plate facing the side wall of the box. The bottom of the auxiliary guide plate is flush with the side wall of the box, and a strip-shaped bent portion outlet matching the width of the partition is formed between the bottom of the auxiliary guide plate and the bottom of the limiting guide plate. One end of the top of the auxiliary guide plate extends outward relative to the other end of the box side wall, and a bent portion inlet with a smaller spacing at one end and a larger spacing at the other end is formed between the top of the auxiliary guide plate and the top of the limiting guide plate. This packing assistance device can guide and adjust the insertion angle of partitions with insufficient bending or outwardly flared bending portions during the process of inserting the partition into the box from top to bottom, ensuring that the lower end of the bent portion of the partition is inserted into the box in a state of parallel and close contact with the inner wall of the box.

The invention relates to the field of metal printing coatings, and particularly discloses high-wear-resistance UV curing metal printing gloss oil and a preparation method thereof. The high-wear-resistance UV curing metal printing gloss oil is prepared from the following raw materials in percentage by weight: 40 to 65 percent of free radical curing oligomer, 25 to 44 percent of free radical curing monomer, 2 to 4 percent of free radical initiator, 3 to 10 percent of adhesion promoter, 0.05 to 0.5 percent of flatting agent, 0.05 to 0.5 percent of defoaming agent and 0.5 to 2 percent of wax powder slipping agent. The preparation method comprises the following steps: mixing the wax powder slipping agent with part of the free radical curing monomer, and carrying out dull polish treatment to obtain wax slurry; uniformly mixing the free radical curing oligomer, the residual free radical curing monomer and the adhesion promoter to obtain a primary mixture; then adding a free radical initiator, and uniformly mixing to obtain a composite material; then adding wax slurry, a flatting agent and a defoaming agent, and uniformly mixing to obtain metal printing gloss oil; the lubricating oil has good lubricity and can form a firm and smooth surface protection film, so that the lubricating oil has high wear resistance.

The present application relates to the technical fields of data line terminal press fitting equipment with positioning mechanism, and discloses a data line terminal press fitting equipment with positioning mechanism, which comprises a bottom plate, the top of the bottom plate is sequentially provided with a terminal pressing mechanism and a wire pressing mechanism from left to right, and the top of the bottom plate is fixedly connected with a lifting mechanism located at the left side of the terminal pressing mechanism. The data line terminal press fitting equipment with positioning mechanism has the advantages of high press fitting efficiency and high positioning accuracy, solves the problem that the existing data line terminal mostly needs to be manually clamped into the clamping groove for press fitting, and the manually placed data line terminal is easily affected by the data line to cause the data line terminal to be skewed, has low positioning accuracy, and the terminal is easily affected by the torsion of the data line during the press fitting process, causing the terminal to be raised and affecting the pass rate of the data line terminal press fitting, and has poor press fitting efficiency and low pass rate.

The utility model relates to the field of automobile parts manufacturing and discloses a die-casting mold for an automobile gearbox housing. When aluminum liquid in a mold cavity cools to form a semi-solid casting, an extrusion drive mechanism drives a pressing head to extend toward the surface of the casting through a push rod. The pressing head gradually squeezes the surface of the casting, not only gradually squeezing to form a threaded hole position, but also guiding the gas near the squeezing point to the threaded hole position, thereby reducing the generation of pores on the casting surface and improving the surface smoothness of the automobile gearbox housing.

The application discloses monodisperse smooth spherical silver powder, a preparation method and application thereof, wherein the silver powder has a particle size distribution parameter D100 of less than or equal to 4.0 microns, a sphericity ratio range of 0.85 to 1.15, and a specific surface area range of 0.60 to 0.75 m 2 / g. In view of the trend of narrow line width of the metalized printing of the crystalline silicon solar cell, the silver powder as the conductive phase of the silver paste needs to have a smaller D100 value and higher monodispersity. The application realizes high sphericity of the silver particles by constructing high supersaturation, inhibits agglomeration by combining two types of surface adsorbents with adsorption effect, and then adjusts the D100 value and optimizes the smoothness of the surface by Ostwald ripening process, so as to obtain the silver powder with excellent monodispersity, small D100 value, high sphericity and smooth surface, which effectively meets the high-precision requirement of the narrow line width printing of the photovoltaic cell, and is suitable for the field of high-performance conductive paste preparation.

This invention provides a glass fiber reinforced polyamide composite material, its preparation method, and its application. The glass fiber reinforced polyamide composite material comprises a polyamide matrix, glass fibers, and a rigid flow aid; the rigid flow aid is at least one of a three-armed aromatic polyamide; the structural formula of the three-armed aromatic polyamide is as follows: The preparation method includes: mixing the polyamide matrix, glass fibers, rigid flow aid, and optionally a surface compatibilizer, followed by molding to obtain the glass fiber reinforced polyamide composite material. The composite material prepared by this invention exhibits improved surface smoothness, reduced fiber floating phenomenon, and enhanced mechanical strength.

The invention relates to a preparation method of a flame-retardant and light-resistant core-shell type water-based acrylate resin coating, which comprises the following steps: adding water, an emulsifier and methacrylic acid into a reaction container, uniformly mixing and stirring, heating to 40-45 DEG C, stirring and reacting for 60 minutes, adding a monomer A, 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and an organic molybdenum compound, and emulsifying for 60-90 minutes; heating to 80-90 DEG C, dropwise adding an initiator, reacting for 1-2 hours, and reacting for 1-2 hours at 70-90 DEG C to obtain a core-layer emulsion; and simultaneously dropwise adding all monomers B and an initiator into all the obtained core-layer emulsion for 1 hour, keeping the temperature and stirring to react for 1.5 hours, adding hydroxypropyl propargyl ether and a coumarin derivative, reacting at 60-70 DEG C for 1 hour, cooling to 50 DEG C, adding an emulsifier, reacting for 30 minutes, and adding ammonia water to adjust the pH value to 7-8, thereby obtaining the flame-retardant and light-resistant core-shell type water-based acrylate resin coating. The obtained acrylate resin is good in molten drop resistance and light resistance.

The invention belongs to the technical field of paper industry manufacturing, and particularly relates to a high-temperature-resistant and oil-stain-resistant food paper bag and application of the high-temperature-resistant and oil-stain-resistant food paper bag in fried food packaging. According to the invention, the coating layer is compounded on the base paper layer, the starch component of the coating layer is modified, and meanwhile, the functional lignocellulose composite material and amino modified magnesium oxide are introduced, so that the high-temperature-resistant and oil-resistant food paper bag is prepared, the bursting strength of the food paper bag is effectively improved, the high-temperature-resistant performance is enhanced, and the service life of the food paper bag is prolonged. And meanwhile, a good oil-proof grade is obtained.

A method for producing a carboxyl group-containing liquid nitrile rubber is provided, the method comprising: bringing a latex of a carboxyl group-containing liquid nitrile rubber into contact with a mono- or divalent metal salt under a condition at a pH of 5 or less to salt out and separate the carboxyl group-containing liquid nitrile rubber from an aqueous phase.

The invention relates to the technical field of metal corrosion prevention, in particular to a wear-resistant and corrosion-resistant aluminum alloy and a surface treatment process thereof. The aluminum alloy plate is sequentially subjected to polishing, hanging, oil removal, water washing, alkali corrosion, water washing, pure water washing, bright dipping, water washing, pure water washing, hard anodic oxidation, hanging, water washing, pure water washing and blow-drying, and the surface-treated aluminum alloy plate is obtained. The polyurethane coating is obtained by adding raw materials such as hydroxyl-terminated fluorosiloxane, fluorine-containing polyol, quaternary ammonium salt polyol, polypropylene glycol, isophorone diisocyanate, a composite graphene material and the like. And the polyurethane coating is brushed to the surface of the surface-treated aluminum alloy plate, and the wear-resistant and corrosion-resistant aluminum alloy finished product is obtained. The finished product prepared by the invention has excellent wear resistance, corrosion resistance and antibacterial property, so that the finished product has a wide application prospect in the technical field of metal corrosion prevention.

This invention provides a method for preparing large-diameter polyphenylsulfone (PPS) monofilaments, comprising the following steps: mixing PPS and a lubricant and then performing melt extrusion to obtain a melt; extruding the melt through a spinneret to obtain nascent monofilaments; sequentially subjecting the nascent monofilaments to oil bath cooling, drawing, and winding to obtain cooled and shaped nascent monofilaments; and sequentially subjecting the cooled and shaped nascent monofilaments to slow drawing and heat setting to obtain large-diameter PPS monofilaments; the slow drawing speed is 3–5 m / min. The addition of a lubricant in this invention improves the flowability and extrusion stability of PPS, preventing melt fracture during extrusion. The subsequent oil bath cooling improves the surface smoothness of the cooled nascent monofilaments, which is beneficial for subsequent drawing. The slow drawing speed allows for slow cold drawing of the nascent monofilaments, which not only enables molecular chain orientation but also prevents filament breakage, thereby obtaining large-diameter PPS monofilaments.

The invention relates to the technical field of polishing devices, in particular to a polishing device for flute processing, which comprises an external control part, a mounting part is arranged outside the external control part, an internal polishing part is arranged in the mounting part, a flute fixing part is arranged in the mounting part, and an external polishing part is arranged in the mounting part; when the outer grinding frame moves to the position of the bamboo ring, the punching and grinding frame can stretch out by rotating the rear control frame, the surface of the bamboo ring is pointedly ground, meanwhile, the bamboo ring is prevented from mechanically blocking the movement of the moving frame and the outer grinding frame, it is ensured that the grinding assembly smoothly moves along the outer wall of the flute, and unified grinding of the flute body and the bamboo ring is achieved; the polishing continuity and uniformity of the outer wall of the bamboo flute are guaranteed, and the problems that in the intelligent manufacturing equipment industry, when the polishing assembly moves along the outer wall of the flute to conduct polishing operation, the bamboo ring can mechanically block the polishing assembly, the polishing assembly cannot move smoothly, and then the polishing continuity and uniformity of the outer wall of the flute are affected are effectively solved.