阅读说明：本技术 一种铝包覆玻璃微粉的物理制备方法及系统 (Physical preparation method and system of aluminum-coated glass micro powder ) 是由 徐铭 贾菲 崔凯 于 2019-11-20 设计创作，主要内容包括：本发明涉及一种铝包覆玻璃微粉的物理制备方法及系统,所述物理制备方法包括以下步骤：采用物理法将铝涂敷于玻璃纤维的表面,形成全包覆的镀铝玻璃纤维；将得到的镀铝玻璃纤维进行预切割、粉碎处理,即得所述铝包玻璃微粉。发明通过物理方法制备铝包玻璃微粉具有制备效率高、安全、环境友好等突出特点,与现有技术中的化学合成法相比,该方法的制造成本优势及环保优势突出,利于广泛推广应用。(The invention relates to a physical preparation method and a system of aluminum-coated glass micro powder, wherein the physical preparation method comprises the following steps: coating aluminum on the surface of the glass fiber by adopting a physical method to form a fully-coated aluminum-plated glass fiber; and pre-cutting and crushing the obtained aluminized glass fiber to obtain the aluminum-clad glass micro powder. The method for preparing the aluminum-clad glass micropowder by the physical method has the outstanding characteristics of high preparation efficiency, safety, environmental friendliness and the like, and compared with the chemical synthesis method in the prior art, the method has the outstanding advantages of manufacturing cost and environmental protection and is beneficial to wide popularization and application.)

1. A physical preparation method of aluminum-coated glass micropowder is characterized by comprising the following steps:

1) coating aluminum on the surface of the glass fiber by adopting a physical method to form a fully-coated aluminum-plated glass fiber;

2) pre-cutting and crushing the aluminized glass fiber obtained in the step 1) to obtain the aluminum-clad glass micro powder.

2. The physical preparation method of claim 1, wherein the physical method in step 1) is selected from one of a vacuum evaporation method, a magnetron sputtering method, or a molten metal dip coating method.

3. The physical preparation method of claim 2, wherein the physical method in step 1) is a molten metal dip coating method.

4. The physical preparation method of claim 1, wherein step 1) specifically comprises: and drawing the glass fiber, and pressing the cooled glass fiber into the molten aluminum through a compression roller while drawing the glass fiber.

5. The physical preparation method of claim 4, wherein the depth range of the molten aluminum into which the glass fiber is drawn and pressed in step 1) is 5mm to 40 mm; the drawing and pressing speed of the glass fiber is 3-4 mm/s; the length of the glass fiber drawing is 0.5m-0.6 m; the temperature of the molten aluminum liquid is 680-800 ℃.

6. The physical manufacturing method of claim 5, wherein the glass fiber in step 1) is selected from one of an alkali-free glass system, a quartz glass system, or a high strength glass system; the aluminum liquid is pure aluminum or molten aluminum alloy, the aluminum alloy contains at least one of copper or zinc, and the molar content of aluminum in the aluminum alloy is more than 95% and less than 100%; the aluminum is coated to a thickness of 0.5 to 1.5 microns.

7. The physical preparation method of claim 1, wherein the precut length in step 2) is 3.5mm to 1.5 mm; the length-diameter ratio of the crushed aluminum-coated glass micro powder is less than 2:1, and the granularity of the crushed aluminum-coated glass micro powder is more than or equal to 300 meshes.

8. The physical preparation method according to claim 1, further comprising a step of grinding the fine aluminum-clad glass powder obtained in the step 2) with a grinding wheel having a mesh number of more than 400 mesh after the step 2); the grain diameter of the aluminum-clad glass micro powder after grinding treatment is 20-45 mu m.

9. A physical preparation system of aluminum-coated glass micro powder is characterized by comprising a glass fiber drawing machine, wherein a compression roller is arranged between a steering wheel and a winding wheel of the glass fiber drawing machine, and an aluminum liquid groove is arranged below the compression roller; one side of the glass fiber wire drawing machine is provided with a glass fiber chopping machine, and one side of the glass fiber chopping machine is provided with a crusher.

10. The physical preparation system of claim 9, wherein the aluminum bath contents are provided with molten aluminum liquid; the bottom of the aluminum liquid tank is provided with a PLC constant temperature thermocouple for controlling the temperature of the aluminum liquid; the circle center connecting line of the steering wheel and the winding wheel is vertical to the circle center connecting line of the bushing and the steering wheel; the pulverizer is an electric mechanical pulverizer; also comprises a grinding wheel with the mesh number larger than 400 meshes.

Technical Field

The invention relates to a preparation method and a system of aluminum-coated glass micro powder, in particular to a physical preparation method and a physical preparation system of the aluminum-coated glass micro powder.

Background

The aluminum-coated glass powder is an industrial raw material with wide application, has remarkable effects in the aspects of lubrication, paint modification or use as a composite material conductive additive and the like, and has excellent application effects in the military field, for example, the aluminum-coated glass powder can be used for infrared characteristic extinction and shielding effects of equipment or used as a precursor raw material of certain infrared interference materials.

Because aluminum is a metal material with high activity, the synthesis process of coating aluminum on glass powder by using a chemical synthesis method is generally unstable and high in cost, and in addition, triethyl aluminum, which is a raw material for chemically synthesizing the material, is an extremely flammable and spontaneous combustion material, has high danger and is not beneficial to reducing the preparation technology threshold of the material.

Disclosure of Invention

In view of the above, the present invention provides a physical preparation method and system for an aluminum-coated glass micro powder.

In order to achieve the above object, the present invention is achieved by the following means. According to the physical preparation method of the aluminum-coated glass micro powder, which is provided by the invention, the method comprises the following steps:

1) coating aluminum on the surface of the glass fiber by adopting a physical method to form a fully-coated aluminum-plated glass fiber;

2) pre-cutting and crushing the aluminized glass fiber obtained in the step 1) to obtain the aluminum-clad glass micro powder.

The technical measures can be further adopted to solve the problems in the prior art.

Preferably, in the physical preparation method of the aluminum-coated glass micropowder, the physical method in the step 1) is one selected from vacuum evaporation, magnetron sputtering and molten metal dip coating.

Preferably, the physical preparation method of the aluminum-coated glass micropowder comprises the step 1) of dip coating the molten metal.

Preferably, in the physical preparation method of the aluminum-coated glass micropowder, the step 1) specifically includes: and drawing the glass fiber, and pressing the cooled glass fiber into the molten aluminum through a compression roller while drawing the glass fiber.

Preferably, in the physical preparation method of the aluminum-coated glass micropowder, the depth range of the molten aluminum liquid into which the glass fibers are drawn and pressed in the step 1) is 5mm to 40mm, and preferably 20 mm.

Preferably, in the physical preparation method of the aluminum-coated glass micropowder, the drawing and pressing speed of the glass fiber in the step 1) is 3-4 mm/s; the length of the glass fiber drawing wire is 0.5m-0.6 m.

Preferably, in the physical preparation method of the aluminum-coated glass micropowder, the temperature of the molten aluminum liquid in the step 1) is 680-800 ℃, and is preferably 720 ℃.

Preferably, in the physical preparation method of the aluminum-coated glass micropowder, the glass fiber in the step 1) is selected from one of an alkali-free glass system, a quartz glass system or a high-strength glass system.

Preferably, in the physical preparation method of the aluminum-coated glass micropowder, in the step 1), the aluminum liquid is a molten liquid of pure aluminum or aluminum alloy, the aluminum alloy contains at least one of copper or zinc, and the molar content of aluminum in the aluminum alloy is greater than 95% and less than 100%.

Preferably, the physical preparation method of the aluminum-coated glass micropowder, wherein the coating thickness of the aluminum in the step 1) is 0.5 to 1.5 micrometers.

Preferably, in the physical preparation method of the aluminum-coated glass micropowder, the precut length in the step 2) is 3.5mm to 1.5 mm.

Preferably, in the physical preparation method of the aluminum-coated glass micropowder, the aspect ratio of the fiber of the aluminum-coated glass micropowder crushed in the step 2) is less than 2:1, and the particle size of the aluminum-coated glass micropowder is greater than or equal to 300 meshes.

Preferably, the physical preparation method of the aluminum-coated glass micropowder further comprises a step of grinding the aluminum-coated glass micropowder obtained in the step 2) by using a grinding wheel with the mesh number larger than 400 after the step 2).

Preferably, the physical preparation method of the aluminum-coated glass fine powder is one in which the particle size of the aluminum-coated glass fine powder after grinding treatment is 20 μm to 45 μm.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures. The physical preparation system for the aluminum-coated glass micro powder comprises a glass fiber drawing machine, wherein a compression roller is arranged between a steering wheel and a winding wheel of the glass fiber drawing machine, and an aluminum liquid tank is arranged below the compression roller; one side of the glass fiber wire drawing machine is provided with a glass fiber chopping machine, and one side of the glass fiber chopping machine is provided with a crusher.

Preferably, in the physical preparation system of the aluminum-coated glass micropowder, molten aluminum is contained in the aluminum liquid tank; and a PLC constant-temperature thermocouple is arranged at the bottom of the aluminum liquid tank and used for controlling the temperature of the aluminum liquid.

Preferably, in the physical preparation system of the aluminum-coated glass micropowder, a line connecting the centers of circles of the steering wheel and the winding wheel is perpendicular to a line connecting the centers of circles of the bushing and the steering wheel.

Preferably, in the physical preparation system of the aluminum-coated glass micropowder, the pulverizer is an electromechanical pulverizer.

Preferably, the physical preparation system of the aluminum-coated glass micropowder further comprises a grinding wheel with the mesh number larger than 400.

Preferably, in the physical preparation system of the aluminum-coated glass micropowder, the grinding wheel is a white corundum grinding wheel with a diameter of 280 mm.

By the technical scheme, the invention at least has the following advantages:

the method for preparing the aluminum-clad glass micro powder by the physical method has the outstanding characteristics of high preparation efficiency, safety, environmental friendliness and the like, and is beneficial to developing the manufacture of products by scientific research units such as small and medium-sized enterprises, schools and the like. Compared with the chemical synthesis method in the prior art, the method has the advantages of outstanding manufacturing cost advantage and environmental protection advantage, and is beneficial to wide popularization and application.

Drawings

FIG. 1 is a cross section of an aluminum clad glass fiber after crushing according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a physical preparation system of the aluminum-coated glass micropowder according to the embodiment of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to the physical preparation method and system of the aluminum-coated glass micro powder according to the present invention, and the specific implementation, structure, characteristics and effects thereof, in conjunction with the preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The materials, reagents and the like used in the following examples are commercially available