CN-117282380-B - Magnetic field strength adjustable nano material magnetic field induction growth device

Abstract

The invention provides a magnetic field induction growth device for nano materials with adjustable magnetic field strength, which is characterized by comprising a furnace frame, a magnetic field unit, a heating furnace and a cooling unit, wherein the magnetic field unit is arranged in the middle of the furnace frame and used for providing a magnetic field, the heating furnace is arranged on the furnace frame and used for containing nano materials and heating the nano materials, and the cooling unit is used for cooling an upper permanent magnet and a lower permanent magnet.

Inventors

• LU WEI
• LU SHUNDA

Assignees

• 同济大学

Dates

Publication Date

20260505

Application Date

20220616

Claims (8)

1. 1. A magnetic field induced growth device for a nanomaterial with adjustable magnetic field strength, for heat treating the nanomaterial in a magnetic field to induce growth thereof, comprising: A furnace frame; the magnetic field unit is arranged in the middle of the furnace frame and is used for providing a magnetic field; A heating furnace arranged on the furnace frame and used for holding the nano material and heating the nano material under the action of the magnetic field, and A cooling unit for cooling the magnetic field unit, Wherein the magnetic field unit comprises an upper permanent magnet, a lower permanent magnet, a magnet fixing assembly and a moving assembly, the upper permanent magnet and the lower permanent magnet both comprise a plurality of small square NdFeB permanent magnets which are separated by a baffle made of nonferromagnetic materials, The magnet fixing assembly comprises an upper connecting plate, a lower connecting plate and a vertical connecting plate, wherein the upper connecting plate is fixedly connected with the upper permanent magnet, the lower connecting plate is fixedly connected with the lower permanent magnet, the vertical connecting plate is detachably connected with the upper connecting plate and the lower connecting plate respectively, The moving component is used for driving the magnet fixing component to move so as to lead the magnetic field unit to move to a preset position, the nano material in the heating furnace is positioned in the magnetic field formed by the magnetic field unit at the preset position, The cooling unit comprises a water pump, a water tank and a plastic hose, wherein the water tank is respectively connected with the upper permanent magnet and the lower permanent magnet through the plastic hose.
2. 2. The magnetic field strength adjustable nanomaterial magnetic field induced growth device of claim 1, wherein: The moving assembly comprises a screw rod, a moving part and a driving part, the length direction of the screw rod is perpendicular to the length direction of the heating furnace, the moving part is movably arranged on the screw rod, and the driving part is used for driving the moving part to move along the screw rod.
3. 3. The magnetic field strength adjustable nanomaterial magnetic field induced growth device of claim 1, wherein: wherein the heating furnace comprises a furnace shell, a furnace door, a furnace plug, a vent and a heating unit, the heating unit is used for heating the heating furnace, Openings are arranged on two sides of the furnace shell, the furnace shell surrounds to form a hearth, The furnace door is arranged at the opening and is used for opening or closing the opening, The furnace plug is arranged in the hearth, The air vent is arranged on the furnace door and is used for introducing protective gas into the furnace chamber.
4. 4. A magnetic field strength adjustable nanomaterial magnetic field induced growth device as claimed in claim 3 wherein: Wherein the heating unit comprises a resistance wire and a thermocouple, The resistance wires are arranged on the upper, lower, front and rear stainless steel plates of the furnace shell and are used for uniformly heating the hearth, The thermocouple is arranged on the lower stainless steel plate of the furnace shell, For measuring the temperature of the furnace.
5. 5. The magnetic field strength adjustable nanomaterial magnetic field induced growth device of claim 3, further comprising: The material placing frame is used for being placed in the hearth and comprises an upper stainless steel plate and a lower stainless steel plate, the upper stainless steel plate is used for containing the nano materials, and a plurality of rib rods are arranged in the middle of the upper stainless steel plate and the middle of the lower stainless steel plate.
6. 6. The magnetic field strength adjustable nanomaterial magnetic field induced growth device of claim 3, further comprising: The stainless steel reaction kettle is used for being placed in the hearth and used for containing the nano materials.
7. 7. The magnetic field strength adjustable nanomaterial magnetic field induced growth device of claim 5, wherein: The steel bar is fixedly connected with the lower stainless steel plate, and the steel bar is detachably connected with the upper stainless steel plate.
8. 8. The magnetic field strength adjustable nanomaterial magnetic field induced growth device of claim 4, further comprising: The control cabinet is provided with a control knob, a voltmeter, an ammeter and a temperature controller, The control knob is used for controlling the operation of the moving assembly, The voltmeter is used for displaying the total voltage of the magnetic field induction growth device of the nano material with adjustable magnetic field intensity, The ammeter is used for displaying the fed-in current, The temperature controller comprises a display screen and a button, wherein the display screen is used for displaying the temperature of the heating furnace, and the button is used for adjusting the power of the resistance wire.

Description

Magnetic field strength adjustable nano material magnetic field induction growth device Technical Field The invention relates to the technical field of material heat treatment, in particular to a nano material magnetic field induction growth device with adjustable magnetic field intensity. Background The research shows that the nano material after the magnetic field induction orientation has stronger magnetic coupling effect. The magnetic field induced orientation can transfer energy to substances in a micro-scale without contact, so that a series of changes such as orientation, migration, arrangement and the like of some molecules, atoms, colloids and micro-nano particles are generated, and the molecules, the atoms, the colloids and the micro-nano particles are automatically aggregated in the micro-scale to form a regular and ordered structure. The process of magnetic field induced orientation is essentially a result of competition between the various interaction forces acting on the magnetic particles. The one-dimensional, two-dimensional, three-dimensional and composite ordered structure material prepared by magnetic field induced orientation has special and excellent performances in the aspects of optics, mechanics, magnetism and the like, and has wide application prospect. Disclosure of Invention The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a nanomaterial magnetic field-induced growth apparatus with adjustable magnetic field strength. The invention provides a magnetic field induction growth device for nano materials with adjustable magnetic field strength, which is characterized by comprising a furnace frame, a magnetic field unit, a heating furnace and a cooling unit, wherein the magnetic field unit is arranged in the middle of the furnace frame and used for providing a magnetic field, the heating furnace is arranged on the furnace frame and used for containing nano materials and heating the nano materials, and the cooling unit is used for cooling an upper permanent magnet and a lower permanent magnet. The nano material magnetic field induction growth device with the adjustable magnetic field intensity can be characterized in that the magnetic field unit comprises an upper permanent magnet, a lower permanent magnet, a magnet fixing assembly and a moving assembly, wherein the upper permanent magnet and the lower permanent magnet all comprise a plurality of small square neodymium iron boron permanent magnets which are separated by a baffle made of nonferromagnetic materials, the magnet fixing assembly comprises an upper connecting plate, a lower connecting plate and a vertical connecting plate, the upper connecting plate is fixedly connected with the upper permanent magnet, the lower connecting plate is fixedly connected with the lower permanent magnet, the vertical connecting plate is detachably connected with the upper connecting plate and the lower connecting plate respectively, the moving assembly is used for driving the magnet fixing assembly to move so that the magnetic field unit moves to a preset position, and nano materials in the heating furnace are positioned in a magnetic field formed by the magnetic field unit at the preset position. The nano material magnetic field induction growth device with the adjustable magnetic field intensity can be characterized in that the moving assembly comprises a screw rod, a moving piece and a driving piece, the length direction of the screw rod is perpendicular to the length direction of the heating furnace, the moving piece is movably arranged on the screw rod, and the driving piece is used for driving the moving piece to move along the screw rod. The nanomaterial magnetic field induction growth device with the adjustable magnetic field intensity can be characterized in that the heating furnace comprises a furnace shell, a furnace door, a furnace plug, an air vent and a heating unit, wherein the heating unit is used for heating the heating furnace, openings are formed in two sides of the furnace shell, the furnace shell surrounds a furnace cavity, the furnace door is arranged at the opening and used for opening or closing the opening, the furnace plug is arranged in the furnace cavity, and the air vent is arranged on the furnace door and used for introducing protective gas into the furnace cavity. The nanomaterial magnetic field induction growth device with adjustable magnetic field intensity can be characterized in that the heating unit comprises a resistance wire and a thermocouple, wherein the resistance wire is arranged on the upper stainless steel plate, the lower stainless steel plate, the front stainless steel plate and the rear stainless steel plate of the furnace shell, the resistance wire is used for uniformly heating a hearth, and the thermocouple is arranged on the lower stainless steel plate of the furnace shell and is used for measuring the temperature of the he