31results about How to "Increase the effective bonding area" patented technology

The invention relates to a bamboo fiber reinforced composite material and a manufacturing method thereof. The bamboo fiber reinforced composite material is formed by directional bamboo fiber felt and an adhesive layer; the upper surface and the lower surface and the thickness direction of the directional bamboo fiber felt are respectively provided with a series of longitudinal cracks which are disconnected uniformly and have nonuniform thickness; the manufacturing method thereof comprises the following steps: longitudinally splitting a section of bamboo tube into two semicircular bamboo tubesalong the diameter thereof, removing internal segments, defibering the internal arc surface of the semicircular bamboo tube by a driving roller and a defibering roller, then defibering the external arc surface of the semicircular bamboo tube, then carrying out glue applying, hot-pressing and forming the bamboo fiber reinforced composite material; the series of longitudinal cracks which are disconnected uniformly and have nonuniform thickness are defibered from both the internal arc surface and the external arc surface of the semicircular bamboo tube, simultaneously the bamboo green and bambooyellow are also removed, therefore, the bamboo fiber reinforced composite material and the manufacturing method thereof increase the effective gluing area of the bamboo material, improve the penetration path of the bamboo materials, lead the strength and hardness of the plywood to be greatly improved and having good processing performance.

A method of manufacturing solar cells comprises the steps of preparing a photovoltaic conversion substrate, and forming a collector layer and multiple conductive portions on a backlight surface of the photovoltaic conversion substrate, wherein the multiple conductive portions are arranged at intervals in a direction. The collector layer is formed by a screen plating process of a collector layer screen plating plate. The collector layer is equipped with multiple openings at intervals, includes multiple first collector portions that are correspondingly adjacent to the multiple openings respectively, and also includes a second collector portion which is thicker than each first collector portion. Each conductive portion overlaps at least one opening and at least one first collector portion. The collector layer screen plating plate is divided into multiple spaced non-sink-deposit zones used for forming the multiple openings, multiple half-sink-deposit zones used for forming the multiple first collector portions, and a sink-deposit zone used for forming the second collector portion.

The invention discloses a high-frequency impact treatment method for aluminum honeycomb cell end faces. The high-frequency impact treatment method for the aluminum honeycomb cell end faces is characterized by comprising the following steps that S1, a to-be-treated aluminum honeycomb is fixed, and to-be-treated aluminum honeycomb cell end faces are upward; S2, the initial relative positions betweena high-frequency impact tool and the to-be-treated aluminum honeycomb cell end faces are determined, and the machining path is determined; and S3, the high-frequency impact tool moves along the movement path and conducts high-frequency impact treatment on the to-be-treated aluminum honeycomb cell end faces on the movement path, and the aluminum honeycomb cell end faces undergoing high-frequency impact treatment are obtained. According to the aluminum honeycomb treated by the adoption of the high-frequency impact treatment method, the cell end face area is increased, the width of the honeycombwalls near the end faces are increased, the effective adhesion binding area is increased, the adhesion binding strength is improved, and then the mechanical performance of an aluminum honeycomb structural component is improved. In addition, the high-frequency impact treatment method for the aluminum honeycomb cell end faces has the advantages of being high in adhesion strength controllability, clean and environmentally friendly.

This application discloses a bamboo gun nail and its production method. The bamboo gun nail is made of a plurality of bamboo nails with equal thickness and width bonded in parallel to form a row. The nail heads of the bamboo nails are polygonal wedge-shaped or conical. The nail body of two adjacent bamboo nails is separated by adhesive. The thickness of the nail tail of the bamboo nail is greater than the thickness of the nail body, which are respectively square or rectangular. The bamboo nail is a reinforcement layer and a thin Bamboo layer-a layered structure at intervals, with a density greater than 1200kg / m 3 .

The invention discloses a stone dry-hanging installation type fixed keel steel frame for a curtain wall, which includes a skeleton mechanism, the whole of the skeleton mechanism is made of steel material, and the sides of the skeleton mechanism are installed in a circular array with a plurality of triangles. Steel frame, the whole of the triangular steel frame is arranged in an equilateral triangle, and the front end of the triangular steel frame is installed with an outer ring plate frame; the invention relates to the field of building curtain walls; the keel steel frame can pass the various groups of the triangular steel frame The end corners are fitted and installed corresponding to each corner slot, so that the chuck rod is inserted into the inside of the shrinking rod hole, and at the same time, multiple sets of triangular steel frames are assembled in a circular array through the external fixed body as a whole to form a hexagonal stable structure. The frame can stably support, fix and install large areas of stone.

A method of manufacturing solar cells comprises the steps of preparing a photovoltaic conversion substrate, and forming a collector layer and multiple conductive portions on a backlight surface of the photovoltaic conversion substrate, wherein the multiple conductive portions are arranged at intervals in a direction. The collector layer is formed by a screen plating process of a collector layer screen plating plate. The collector layer is equipped with multiple openings at intervals, includes multiple first collector portions that are correspondingly adjacent to the multiple openings respectively, and also includes a second collector portion which is thicker than each first collector portion. Each conductive portion overlaps at least one opening and at least one first collector portion. The collector layer screen plating plate is divided into multiple spaced non-sink-deposit zones used for forming the multiple openings, multiple half-sink-deposit zones used for forming the multiple first collector portions, and a sink-deposit zone used for forming the second collector portion.

The invention discloses a rubber modified multielement resin material for disc brake pad and purposes. With the total mass of raw material components of the rubber modified multielement resin material as reference, the rubber modified multielement resin material comprises the following raw material components in percentage by mass: 1-5% of benzoxazine resin, 1-5% of cashew nut shell oil modified phenolic resin, 1-5% of epoxy resin, 1-15% of powder nitrile rubber, 0.5-3% of aramid fiber pulp, 5-20% of mineral fiber, 2-5% of red copper fiber, 1-7% of aluminum oxide, 1-5% of calcium hydroxide, 3-9% of synthesized graphite, 3-9% of granular coke, 2-9% of antimony sulfide, 5-15% of potassium titanate, and 15-45% of barite. The material is applied to the disc brake pad, reduces the wear of the brake pad, reduces the generation frequency of braking noise, and shows better performances on such aspects as friction loss, noise and heat stability.

The invention discloses a building board made of green recycled carbon fiber thermoplastic material, which includes a carbon fiber felt and a thermoplastic resin layer. The front and back sides of the carbon fiber felt are provided with transverse grooves, longitudinal grooves and vertical holes. Horizontal holes parallel to the front of the carbon fiber felt are opened on the facade, and the thermoplastic resin layer is heat-pressed on the front and back of the carbon fiber felt by a hot press. In the present invention, uniform transverse grooves, longitudinal grooves and vertical holes are pressed out on the front and back of the carbon fiber felt, which not only increases the effective bonding area between the carbon fiber felt and the thermoplastic resin layer, but also makes the carbon fiber felt and the thermoplastic resin layer form unevenness Combined structure, so as to improve the bonding strength between the thermoplastic resin layer and the carbon fiber felt; the thermoplastic resin powder in the vertical hole can be melted during hot pressing, so that the thermoplastic resin layer on the front and back of the carbon fiber felt is integrated with the thermoplastic resin in the vertical hole Thermoforming.

The invention discloses a fabrication method of a motor rotor assembly. The fabrication method comprises the steps of firstly, processing an inner hole of annular magnetic steel; secondly, electroplating the annular magnetic steel, attaching electroplating layers onto other surfaces except an inner surface of the annular magnetic steel after being electroplated, and enabling an axial direction of the annular magnetic steel to be in a horizontal direction; thirdly, coating a layer of binding agent on the inner hole of the annular magnetic steel, inserting a cylindrical core shaft into the annular magnetic steel from a first inner hole, and then allowing the cylindrical core to extent out of a second inner hole; fourthly, rotating the annular magnetic steel by 90 degrees so that the axial of the annular magnetic steel is in a vertical direction, and encapsulating a gap between of the second inner hole and the cylindrical core shaft with the binding agent, wherein the second inner hole is arranged above the first inner hole; and finally, maintaining the position of the annular magnetic steel unchanged after the encapsulation of the binding agent is completed, and completing the fabrication of the motor rotor assembly after the binding agent is naturally cured. The fabrication method has the advantages that no noise is generated during the high-speed rotation process, the motor rotor assembly has relatively large twisting force, the annular magnetic steel cannot be separated from the cylindrical core shaft, and the service lifetime of the motor is prolonged.

The invention provides an optical fiber manufacturing technique including a line cutting step, a pre-treatment step, a negative pressure glue absorbing step, a pre-heating step, a step of penetrating fibers through a sleeve and a solidification step. The invention has beneficial effects that excessive concave or convex volume of optical fibers relative to an end face of a ceramic insert core is prevented and fiber breakage proportion is also reduced; optical fiber height of an optical fiber patch cord product is controlled in a range from -100nm to +50nm and the optical fiber height reject ratio is controlled within 0.1 %.

The invention discloses a method for three-dimensional jet-printing, forming and casting of a core. The method comprises the comprises the following steps: (1) spreading film covering sand to form a thin layer, and selectively injecting bonding liquid into the film covering sand by using a three-dimensional jet-printing device so that particles in the film covering sand can be bonded with one another to form a first layer; (2) forming a second layer by using the same method in the step (1), repeating the step (1) until a part is formed completely, and standing the part in a powder bed for a period of time so as to obtain an initially formed blank; and (3) heating the initially formed blank at the temperature of 170-220 DEG C until the bonding liquid completely volatilizes, and cross-linking and curing with phenolic resin, so that the casting of the core is finished. According to the method, the method for three-dimensional jet-printing, forming and casting of the core is simplified; the film covering sand can be accumulated layer by layer without drying conditions among layers, so that the fast casting forming of the core is finished; finally, a produced piece is relatively high in intensity, low in cost and high in efficiency; the method can be used for producing the casting core with the large size and a fine structure, and has a wide application prospect.

Provided is a method for raising the hot pressing bonding rate of a PMMA micro fluidic chip formed by injection moulding. The invention is directed to the field of micro manufacture technology, especially relates to a method for raising the hot pressing bonding quality of a micro fluidic chip. The method is characterized in that carrying out water processing before hot pressing bonding; unlike a traditional hot pressing bonding process flow of from ultrasonic cleaning to drying in a baking oven to hot pressing bonding, a new process flow of from ultrasonic cleaning to water processing to drying the surface with nitrogen to hot pressing bonding is adopted. According to the invention, problems of complex processing method, high cost and negative influence on system operational performance in processing methods such as ultraviolet ray and MMA monomer surface modification and the like are overcome. The processing method is characterized by high efficiency, low cost, unchanged microfluid system performance and simple operation. At a same hot pressing bonding technological parameter, compared to untreated chips, the effective bonding areas of the chips treated with the method provided in the invention substantially increase, the bonding rates averagely increase 20 percent, thereby the bonding quality of the chips is effectively improved.

A radial adjustment and fastening device for processing ultra-precision optical grazing incidence mirrors, which relates to the field of optical design and manufacture, includes a fastening seat for mounting the mirror, a plurality of radial adjustment mechanisms installed on the fastening seat, and a Multiple glue blocks on the fastening seat; the radial position of the reflector in the fastening seat is adjusted by a radial adjustment mechanism; the circumferential position of the reflector in the fastening seat is adjusted by the glue blocks. Fastening the radial position of the reflector through the radial adjustment mechanism can effectively solve the sinking caused by the influence of gravity on the reflector during the processing process, improve the coaxiality between the axis of the mirror surface and the axis of the fastening seat, and at the same time The axiality should be controlled within 0.1μm, which improves the machining accuracy of the mirror surface. Two injections of glue through the glue block can increase the effective bonding area between the reflector and the fastening seat, improve the bonding force between the reflector and the fastening seat, play a role in stabilizing the fastening, and realize the mirror in the Radial fixation and circumferential fixation during machining.