Abstract: The present disclosure provides an exciter and an electronic product. The exciter comprises: a magnetic circuit assembly comprising a first housing and a magnet, and the magnet is connected to the first housing; a coil assembly comprising a second housing and a coil, and the coil is disposed in a magnetic field formed by the magnet, wherein the coil assembly is configured to be capable of generating a vibration relative to the magnetic circuit assembly, the coil is formed by winding a wire having a polygonal cross section. According to the present disclosure, the coil wire has a polygonal cross section, so that an interval between the wires can be reduced in the wound coil, the number of turns of the coil is increased in the same space, the effective length of the coil is increased, and the driving force generated from the coil is increased.

Abstract: A method for preparing a fiber composite material toughened by nano-particles, comprising: first dispersing agglomerated nano-particles uniformly in a low-viscosity, volatile dispersant by ultrasonic and micro-jet treatment (two-stage dispersion), and spraying the dispersant containing nano-particles uniformly on the fiber fabric through a high-pressure spray gun; after the liquid is removed from the fiber fabric, subjecting the nano-modified fiber fabric and resin to composite molding. The method provided by the present application is simple to operate, can be scaled up, and does not change the original manufacturing process of the fiber composite material. Moreover, the method provided by the present application requires only a very small amount of toughening components to achieve a significant increase in the interlaminar fracture toughness of the composite, which has great application prospects.

Abstract: A manipulating device comprising: a rocker, a supporting member a magnetic assembly and a coil assembly, wherein the rocker is rotatable around the supporting member; the coil assembly is formed to have an arc shape, an inner surface of the arc shape faces the rocker, the magnetic assembly is disposed on one end of the rocker adjacent to the coil assembly. According to the technical solution, by providing the magnetic assembly on the one end of the rocker adjacent to the coil assembly, the power for rotating the rocker is adjusted by interaction force between the magnetic assembly and the arc-shaped coil assembly, and the interaction force between the magnetic assembly and the coil assembly can be further adjusted by adjusting the magnitude of the current of the coil assembly.

Abstract: The application provides a fiber composite material reinforced and toughened by long-short carbon nanotubes and preparation method thereof, comprising: a) mixing a short carbon nanotube, a thermoset resin and an additive, to obtain resin matrix slurry; b) pouring the resin matrix slurry into a fiber preform and curing-molding, to obtain the fiber composite material reinforced and toughened by long-short carbon nanotubes; the short carbon nanotube has a length of 0.5-3 ?m and an average length of ?2 ?m; and the long carbon nanotube has a length of 50-1000 ?m. The present disclosure optimizes the spatial layout of long and short carbon nanotubes in the composite material, simultaneously achieving the dual purposes of the intralaminar reinforcement and the interlaminar toughening of the fiber composite material.

Abstract: A vibration apparatus comprising: a vibration assembly comprising a counterweight block, a first magnet group and an elastic member, the first magnet group is fixed on the counterweight block, the vibration assembly is suspended in the vibration apparatus through the elastic member; a stator assembly comprising a coil and a second magnet group, the second magnet group is installed in a winding hole of the coil; the first magnet group comprises at least two side magnets, magnetization directions of the two side magnets are perpendicular to a plane on which the coil is located, the side magnets are magnetized in opposite directions, a magnetization direction of the second magnet group is parallel to the plane, two poles of second magnet group are respectively attracted to poles of side magnets adjacent to the coil, the vibration assembly is configured to produce vibration relative to the stator assembly.

Abstract: Disclosed are a vibration sound device for an electronic product and the electronic product. The vibration sound device comprises a first housing, a magnetic assembly, a coil assembly and a second housing. The first housing includes a cavity and is opened at one side thereof. An interaction force is generated between the magnetic assembly in the first housing and the coil assembly on the second housing to drive the vibration sound device to vibrate so as to generate a sound. According to the present disclosure, the magnetic assembly and the coil assembly are configured in a sandwiched structure, so that the overall height of the vibration sound device is reduced, and thus space utilization of the electronic device is improved.

Abstract: The present invention provides a supramolecular hot melt adhesive. The present application also provides a method for preparing a supramolecular hot melt adhesive, comprising the steps of: A) dissolving a diol oligomer or diamine oligomer in a solvent, and reacting the mixture with diisocyanate under the action of a catalyst to obtain an initial reactant; B) mixing 2-amino-4-hydroxyl-6-methylpyrimidine, the initial reactant and a solvent for reaction; C) reacting the reactant obtained in step B) with a multifunctional crosslinking agent to obtain the supramolecular hot melt adhesive. The preparation method of the present invention constructs a supramolecular material with excellent strength, toughness and self-healing ability by a synergistic effect of multiple hydrogen bonds between carbamate or ureido group and pyrimidine group.

Abstract: The present invention provides a method for preparing a thermoplastic elastomer with excellent resilience and high strength, comprising the steps of: A) adding at least two soft segment monomers into a solvent, and then adding a hard segment monomer to the mixture for reaction under the action of a catalyst to obtain an initial reactant; B) subjecting the initial reactant to react with a chain extending agent to obtain a thermoplastic elastomer. In the thermoplastic elastomer provided by the present application, the multiple hydrogen bonds in the hard segment monomer provide it with high strength and high modulus, and the thermodynamic incompatibility of the soft segment monomers provides it with excellent toughness and high resilience. Therefore, the thermoplastic elastomer provided by the present application has advantages of excellent strength, toughness, rapid resilience and high resilience rate.

Abstract: The present invention relates to the technical field of composite materials, and in particular to a fiber composite material and a preparation method thereof. The preparation method comprises: A) uniformly dispersing nanoparticles in a solvent to obtain a nanoparticle dispersion; B) uniformly spray-coating the nanoparticle dispersion on a chopped fiber nonwoven fabric, and drying the fabric to obtain a nano-modified chopped fiber nonwoven fabric; C) intercalating the nano-modified chopped fiber nonwoven fabric between fiber preforms, and subjecting the obtained material and a resin matrix to composite molding by a molding process to obtain a fiber composite material. In the present invention, firstly nanoparticles are uniformly dispersed in a solvent to obtain a nanoparticle dispersion; secondly, the chopped fiber and the nanoparticles cooperate to construct a multi-scale interlaminar toughening phase, which significantly improves the interlaminar fracture toughness of the fiber composite material.

Abstract: Disclosed are a vibration sound device for an electronic product and the electronic product. The vibration sound device comprises a first housing, a magnetic assembly, a coil assembly and a second housing. The first housing includes a cavity and is opened at one side thereof. An interaction force is generated between the magnetic assembly in the first housing and the coil assembly on the second housing to drive the vibration sound device to vibrate and sound. According to the present disclosure, the magnetic assembly and the coil assembly are configured into a nested form, so that the overall height of the vibration sound device is reduced, the space utilization rate and the assembly precision are improved, and enough utilization space is provided for an electronic device.

Abstract: A vibration exciter for an electronic product comprises a first vibration assembly comprising a first casing (101) and a magnetic circuit assembly below thereof; a second vibration assembly comprising a second casing (105) and at least two groups of coils (102) above thereof and on two sides of the magnetic circuit assembly; the magnetic circuit assembly comprises a central magnet (103b) and at least two side magnets (103a, 103b) in a vibration direction, the magnetizing directions of the two side magnets are parallel to an axial direction of the coils, directions of magnetic poles are opposite; the central magnet comprises at least two groups of magnets (103b, 1032b) in a direction perpendicular to the vibration direction, the magnetizing directions of the at least two groups of magnets are parallel to the vibration direction the directions of the magnetic poles are opposite. The electronic product is also disclosed.

Abstract: A manipulating device comprising: a rocker, a supporting member a magnetic assembly and a coil assembly, wherein the rocker is rotatable around the supporting member; the coil assembly is disposed opposite to the rocker, the magnetic assembly is disposed on one end of the rocker adjacent to the coil assembly; the magnetic assembly (3) comprising a central magnet (31) and at least one side magnets. By providing the magnetic assembly on the one end of the rocker adjacent to the coil assembly (4), the power for rotating the rocker is adjusted by interaction force between the magnetic assembly and the coil assembly, and the interaction force between the magnetic assembly and the coil assembly can be further adjusted by adjusting the magnitude of the current of the coil assembly.

Abstract: A manipulating device comprising: a rocker, a supporting member a magnetic assembly and a coil assembly, wherein the rocker is rotatable around the supporting member; the coil assembly is formed to have an arc shape, an inner surface of the arc shape faces the rocker, the magnetic assembly is disposed on one end of the rocker adjacent to the coil assembly. According to the technical solution, by providing the magnetic assembly on the one end of the rocker adjacent to the coil assembly, the power for rotating the rocker is adjusted by interaction force between the magnetic assembly and the arc-shaped coil assembly, and the interaction force between the magnetic assembly and the coil assembly can be further adjusted by adjusting the magnitude of the current of the coil assembly.

Abstract: The present disclosure provides an exciter and an electronic product. The exciter comprises: a magnetic circuit assembly comprising a first housing and a magnet, and the magnet is connected to the first housing; a coil assembly comprising a second housing and a coil, and the coil is disposed in a magnetic field formed by the magnet, wherein the coil assembly is configured to be capable of generating a vibration relative to the magnetic circuit assembly, the coil is formed by winding a wire having a polygonal cross section. According to the present disclosure, the coil wire has a polygonal cross section, so that an interval between the wires can be reduced in the wound coil, the number of turns of the coil is increased in the same space, the effective length of the coil is increased, and the driving force generated from the coil is increased.

Abstract: Disclosed are a vibration sound device for an electronic product and the electronic product. The vibration sound device comprises a first housing, a magnetic assembly, a coil assembly and a second housing. The first housing includes a cavity and is opened at one side thereof. An interaction force is generated between the magnetic assembly in the first housing and the coil assembly on the second housing to drive the vibration sound device to vibrate so as to generate a sound. According to the present disclosure, the magnetic assembly and the coil assembly are configured in a sandwiched structure, so that the overall height of the vibration sound device is reduced, and thus space utilization of the electronic device is improved.

Abstract: A vibration apparatus comprising: a vibration assembly comprising a counterweight block, a first magnet group and an elastic member, the first magnet group is fixed on the counterweight block, the vibration assembly is suspended in the vibration apparatus through the elastic member; a stator assembly comprising a coil and a second magnet group, the second magnet group is installed in a winding hole of the coil; the first magnet group comprises at least two side magnets, magnetization directions of the two side magnets are perpendicular to a plane on which the coil is located, the side magnets are magnetized in opposite directions, a magnetization direction of the second magnet group is parallel to the plane, two poles of second magnet group are respectively attracted to poles of side magnets adjacent to the coil, the vibration assembly is configured to produce vibration relative to the stator assembly.

Abstract: A vibration exciter for an electronic product comprises a first vibration assembly comprising a first casing (101) and a magnetic circuit assembly below thereof; a second vibration assembly comprising a second casing (105) and at least two groups of coils (102) above thereof and on two sides of the magnetic circuit assembly; the magnetic circuit assembly comprises a central magnet (103b) and at least two side magnets (103a, 103b) in a vibration direction, the magnetizing directions of the two side magnets are parallel to an axial direction of the coils, directions of magnetic poles are opposite; the central magnet comprises at least two groups of magnets (103b, 1032b) in a direction perpendicular to the vibration direction, the magnetizing directions of the at least two groups of magnets are parallel to the vibration direction the directions of the magnetic poles are opposite. The electronic product is also disclosed.

Abstract: Disclosed are a vibration sound device for an electronic product and the electronic product. The vibration sound device comprises a first housing, a magnetic assembly, a coil assembly and a second housing. The first housing includes a cavity and is opened at one side thereof. An interaction force is generated between the magnetic assembly in the first housing and the coil assembly on the second housing to drive the vibration sound device to vibrate and sound. According to the present disclosure, the magnetic assembly and the coil assembly are configured into a nested form, so that the overall height of the vibration sound device is reduced, the space utilization rate and the assembly precision are improved, and enough utilization space is provided for an electronic device.

Abstract: A linear vibration motor, comprising a stator assembly and a vibrator assembly. The stator assembly comprises a housing (1) having a receiving cavity, a magnet (2) located in the receiving cavity and jointly fixed to the housing (1), and a central magnetic yoke (3) of which at least one end is jointly fixed to the housing (1). The magnet (2) comprises a hollow portion (21) extending along the vibration direction of the vibrator assembly. The vibrator assembly comprises a coil (4) and a mass block (9). When the vibrator assembly vibrates, the coil (4) vibrates along with the vibrator assembly and is inserted into the hollow portion (21) of the magnet (2). The central magnetic yoke (3) runs through the coil (4). An resilient support member (5) is configured to suspend the vibrator assembly in the receiving cavity of the housing (1).

Abstract: A linear vibration motor, comprising a stator assembly and a vibrator assembly. The stator assembly comprises a housing (1) having a receiving cavity, a. magnet (2) located in the receiving cavity and jointly fixed to the housing (1), and a central magnetic yoke (3) of which at least one end is jointly fixed to the housing (1). The magnet (2) comprises a hollow portion (21) extending along the vibration direction of the vibrator assembly. The vibrator assembly comprises a coil (4) and a mass block (9). When the vibrator assembly vibrates, the coil (4) vibrates along with the vibrator assembly and is inserted into the hollow portion (21) of the magnet (2). The central magnetic yoke (3) runs through the coil (4). An resilient support member (5) is configured to suspend the vibrator assembly in the receiving cavity of the housing (1).