CN107552588B - Continuous microfiber separation process for improving radiation resistance of metal - Google Patents
Continuous microfiber separation process for improving radiation resistance of metal Download PDFInfo
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Abstract
The invention discloses a continuous microfiber separation process for improving radiation resistance of metal, which has the advantages of simple process steps, simple and convenient operation method and low cost, and obviously improves the toughness, corrosion resistance, elongation at break and electric conductivity of metal fiber by adopting electroplating after the drawing process. In addition, the metal fiber prepared by the technical scheme of the invention is small in diameter and long in length through a continuous drawing process, and the radiation-proof clothes prepared by the metal fiber prepared by the invention are soft and comfortable, have high radiation-proof performance and can reduce the harm of radiation to human bodies.
Description
Technical Field
The invention relates to the field of metal fibers, in particular to a continuous microfiber separation process for improving radiation resistance of metal.
Background
As is well known, in modern life, various electronic devices, such as computers, mobile phones, microwave ovens, etc., generate a great deal of electromagnetic radiation, and scientific research and experiments prove that the radiation is harmful and useless to human bodies and should be avoided as much as possible, especially for pregnant women and infants, and the radiation should be reduced and prevented from being received.
The existing radiation-proof clothes on the market mainly reflect external electromagnetic radiation through a shielding layer of metal fibers so as to prevent the radiation from entering human bodies. However, the diameter of the existing metal fiber is relatively large, so that the radiation protection performance of the radiation protection clothes is relatively poor, and the comfort level is poor.
Disclosure of Invention
In view of the above, the present invention provides a continuous microfiber separation process for improving radiation resistance of metal, which can solve the technical problem of large diameter of metal fiber, thereby improving radiation resistance of radiation-proof clothes.
In order to achieve the above purpose, the invention provides the following technical scheme:
a continuous microfiber separation process for improving radiation resistance of metal comprises the following steps:
a) placing the metal block in an organic solvent for treatment, then washing with deionized water, and finally drying under nitrogen atmosphere;
b) placing the metal block dried in the step a) in electrolyte for electrochemical cleaning, then washing with deionized water, and finally drying under nitrogen atmosphere;
c) drawing the metal block dried in the step b) for three times, and carrying out vacuum annealing on the wire material drawn each time; placing the wire obtained after each annealing in electrolyte for electrochemical cleaning, then washing with deionized water, and finally drying under nitrogen atmosphere;
d) filling the wire material obtained after drying in the step c) into a copper pipe, and then compounding the copper pipe and the copper pipe on a broaching machine to obtain a composite pipe; then placing the composite tube in a vacuum annealing furnace for vacuum annealing treatment, and drawing the composite tube after the vacuum annealing treatment to obtain a fiber yarn;
e) and d) pickling the drawn composite tube in the step d) with a nitric acid solution to remove copper to obtain a fiber filament, then placing the fiber filament in an electroplating solution for electroplating, then washing with deionized water, and finally drying under a nitrogen atmosphere to obtain the metal fiber.
Preferably, the metal block comprises the following components in percentage by weight:
c: 0.02-0.03 wt%, Ni: 10-12 wt%, Cr: 16-17 wt%, Mo: 1.8-2.3 wt%, P: 0.02-0.035 wt%, Si: 0.4-0.5 wt%, Mn: 0.4-0.65 wt%, S: 0.0005 to 0.0015 wt%, the balance being iron.
Preferably, the organic solvent in step a) is acetone, isopropanol or methanol.
Preferably, the electrolyte in the step b) is NaCl with the mass concentration of 3-5%, the negative electrode is a hollow copper electrode, and the positive electrode is a metal block.
Preferably, in the step c), the pass deformation is controlled to be 3-5% in the first drawing process, the total deformation is 60% -90%, the bar is annealed in the drawing process, the annealing temperature is 400-600 ℃, and the annealing time is 40-60 min;
controlling the pass deformation to be 6-9% and the total deformation to be 70-90% in the second drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 600-700 ℃, and the annealing time is 30-50 min;
and controlling the pass deformation to be 10-15% and the total deformation to be 80-99% in the third drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 500-600 ℃, and the annealing time is 30-40 min.
Preferably, in the step d), the pass deformation is controlled to be 8-12%, the total deformation is 80-99%, and the section ratio of the composite pipe is 0.4-0.9.
Preferably, the electroplating solution in step c) and step e) is an acid electroplating solution, the anode is a copper sheet, and the cathode is a wire or a fiber.
Preferably, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, wherein the concentration of the copper sulfate pentahydrate is 1-1.2 mol/L, the concentration of the perchloric acid is 1.2-1.6 mol/L, and the concentration of the polyethylene glycol is 0.04-0.06 mol/L.
Preferably, the polyethylene glycol is one of polyethylene glycol 4000, 6000 and 8000.
The continuous microfiber separation process for improving the radiation resistance of metal provided by the invention has the advantages of simple process steps, simple and convenient operation method and low cost, and the toughness, corrosion resistance, elongation at break and electric conductivity of metal fiber are obviously improved by adopting electroplating after the drawing process. In addition, the metal fiber prepared by the technical scheme of the invention is small in diameter and long in length through a continuous drawing process, and the radiation-proof clothes prepared by the metal fiber prepared by the invention are soft and comfortable, have high radiation-proof performance and can reduce the harm of radiation to human bodies.
Detailed Description
For a further understanding of the invention, preferred embodiments of the invention are described below in conjunction with the examples, but it should be understood that these descriptions are included merely to further illustrate the features and advantages of the invention and are not intended to limit the invention to the claims.
The invention provides a continuous microfiber separation process for improving radiation resistance of metal, which comprises the following steps:
a) placing the metal block in an organic solvent for treatment, then washing with deionized water, and finally drying under nitrogen atmosphere;
b) placing the metal block dried in the step a) in electrolyte for electrochemical cleaning, then washing with deionized water, and finally drying under nitrogen atmosphere;
c) drawing the metal block dried in the step b) for three times, and carrying out vacuum annealing on the wire material drawn each time; placing the wire obtained after each annealing in electroplating solution for electroplating, then washing with deionized water, and finally drying under nitrogen atmosphere;
d) filling the wire material obtained after drying in the step c) into a copper pipe, and then compounding the copper pipe and the copper pipe on a broaching machine to obtain a composite pipe; then placing the composite tube in a vacuum annealing furnace for vacuum annealing treatment, and drawing the composite tube after the vacuum annealing treatment to obtain a fiber yarn;
e) and d) pickling the drawn composite tube in the step d) with a nitric acid solution to remove copper to obtain a fiber filament, then placing the fiber filament in an electroplating solution for electroplating, then washing with deionized water, and finally drying under a nitrogen atmosphere to obtain the metal fiber.
According to the technical scheme, the process steps are simple, the operation method is simple and convenient, the cost is low, and the toughness, the corrosion resistance, the elongation at break and the electric conductivity of the metal fiber are remarkably improved by adopting electroplating after the drawing process. In addition, the metal fiber prepared by the technical scheme of the invention is small in diameter and long in length through a continuous drawing process, and the radiation-proof clothes prepared by the metal fiber prepared by the invention are soft and comfortable, have high radiation-proof performance and can reduce the harm of radiation to human bodies.
In the embodiment of the invention, the metal block comprises the following components in percentage by weight: c: 0.02-0.03 wt%, Ni: 10-12 wt%, Cr: 16-17 wt%, Mo: 1.8-2.3 wt%, P: 0.02-0.035 wt%, Si: 0.4-0.5 wt%, Mn: 0.4-0.65 wt%, S: 0.0005 to 0.0015 wt%, the balance being iron.
In embodiments of the invention, the organic solvent is acetone, isopropanol or methanol. The organic solvent can effectively remove impurities on the surface of the metal block.
In the embodiment of the invention, in the step b), the electrolyte is NaCl with the mass concentration of 3-5%, the negative electrode is a hollow copper electrode, and the positive electrode is a metal block.
In the example of the present invention, in step c), the three pulls are as follows: controlling the pass deformation to be 3-5% and the total deformation to be 60-90% in the first drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 400-600 ℃, and the annealing time is 40-60 min;
controlling the pass deformation to be 6-9% and the total deformation to be 70-90% in the second drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 600-700 ℃, and the annealing time is 30-50 min;
and controlling the pass deformation to be 10-15% and the total deformation to be 80-99% in the third drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 500-600 ℃, and the annealing time is 30-40 min.
The elongation at break and the conductivity of the high metal fiber can be effectively improved by adopting three times of drawing, and the diameter of the high metal fiber is reduced.
In the embodiment of the invention, in the step d), the pass deformation is controlled to be 8-12%, the total deformation is 80-99%, and the section ratio of the composite pipe is 0.4-0.9. The diameter of the high metal fibers can be reduced by adopting the steps.
To improve the corrosion resistance and elongation at break of the metal fibers, impurities in the metal block are separated. In the embodiment of the invention, the electroplating solution in the step c) and the step e) is an acid electroplating solution, the anode is a copper sheet, and the cathode is a wire or a fiber; in other embodiments, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, wherein the concentration of the copper sulfate pentahydrate is 1-1.2 mol/L, the concentration of the perchloric acid is 1.2-1.6 mol/L, and the concentration of the polyethylene glycol is 0.04-0.06 mol/L; in further embodiments, the polyethylene glycol is one of polyethylene glycols 4000, 6000, 8000.
In order to further illustrate the present invention, the following examples are provided to describe the continuous microfiber separation process for improving the radiation protection of metal according to the present invention in detail, but they should not be construed as limiting the scope of the present invention.
Example 1
a) Placing the metal block in acetone for treatment, then washing with deionized water, and finally drying under nitrogen atmosphere;
the metal block comprises the following components in percentage by weight:
c: 0.03 wt%, Ni: 10 wt%, Cr: 17 wt%, Mo: 1.8 wt%, P: 0.02 wt%, Si: 0.5 wt%, Mn: 0.4 wt%, S: 0.0005 wt% and the balance iron.
b) Placing the metal block dried in the step a) in electrolyte for electrochemical cleaning, then washing with deionized water, and finally drying under nitrogen atmosphere; the electrolyte is NaCl with the mass concentration of 3%, the negative electrode is a hollow copper electrode, and the positive electrode is a metal block;
c) drawing the metal block dried in the step b) for three times, and carrying out vacuum annealing on the wire material drawn each time; placing the wire obtained after each annealing in electroplating solution for electroplating, then washing with deionized water, and finally drying under nitrogen atmosphere;
controlling the pass deformation to be 3% and the total deformation to be 70% in the first drawing process, and annealing the bar in the drawing process, wherein the annealing temperature is 500 ℃ and the annealing time is 50 min;
controlling the pass deformation to be 6% and the total deformation to be 80% in the second drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 600 ℃, and the annealing time is 40 min;
controlling the pass deformation to be 10% and the total deformation to be 90% in the third drawing process, and annealing the bar in the drawing process, wherein the annealing temperature is 500 ℃ and the annealing time is 30 min;
the electroplating solution is an acid electroplating solution, the anode is a copper sheet, the cathode is a wire or a fiber, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, and in the mixed solution, the concentration of the copper sulfate pentahydrate is 1mol/L, the concentration of the perchloric acid is 1.2mol/L, and the concentration of the polyethylene glycol is 0.04 mol/L;
d) filling the wire material obtained after drying in the step c) into a copper pipe, and then compounding the copper pipe and the copper pipe on a broaching machine to obtain a composite pipe; then placing the composite tube in a vacuum annealing furnace for vacuum annealing treatment, and drawing the composite tube after the vacuum annealing treatment to obtain a fiber yarn;
the deformation of the control gate in the drawing process is 9 percent, the total deformation is 90 percent, and the section ratio of the composite pipe is 0.6;
e) pickling the drawn composite tube in the step d) with a nitric acid solution to remove copper to obtain a fiber wire, then placing the fiber wire in an electroplating solution for electroplating, then washing with deionized water, and finally drying under a nitrogen atmosphere to obtain metal fibers;
the electroplating solution is an acid electroplating solution, the anode is a copper sheet, the cathode is a wire or a fiber, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, and in the mixed solution, the concentration of the copper sulfate pentahydrate is 1mol/L, the concentration of the perchloric acid is 1.2mol/L, and the concentration of the polyethylene glycol is 0.04 mol/L.
Example 2
a) Placing the metal block into a methanol agent for treatment, then washing with deionized water, and finally drying under a nitrogen atmosphere;
the metal block comprises the following components in percentage by weight:
c: 0.02 wt%, Ni: 12 wt%, Cr: 16-17 wt%, Mo: 2.3 wt%, P: 0.035 wt%, Si: 0.4 wt%, Mn: 0.65 wt%, S: 0.0015 wt% and the balance iron.
b) Placing the metal block dried in the step a) in electrolyte for electrochemical cleaning, then washing with deionized water, and finally drying under nitrogen atmosphere; the electrolyte is NaCl with the mass concentration of 5%, the negative electrode is a hollow copper electrode, and the positive electrode is a metal block;
c) drawing the metal block dried in the step b) for three times, and carrying out vacuum annealing on the wire material drawn each time; placing the wire obtained after each annealing in electroplating solution for electroplating, then washing with deionized water, and finally drying under nitrogen atmosphere;
controlling the pass deformation to be 5% and the total deformation to be 90% in the first drawing process, and annealing the bar in the drawing process, wherein the annealing temperature is 600 ℃ and the annealing time is 60 min;
controlling the pass deformation to be 9% and the total deformation to be 90% in the second drawing process, and annealing the bar in the second drawing process, wherein the annealing temperature is 700 ℃ and the annealing time is 30 min;
controlling the pass deformation to be 15% and the total deformation to be 99% in the third drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 600 ℃, and the annealing time is 40 min;
the electroplating solution is an acid electroplating solution, the anode is a copper sheet, the cathode is a wire or a fiber, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, and in the mixed solution, the concentration of the copper sulfate pentahydrate is 1.2mol/L, the concentration of the perchloric acid is 1.6mol/L, and the concentration of the polyethylene glycol is 0.06 mol/L;
d) filling the wire material obtained after drying in the step c) into a copper pipe, and then compounding the copper pipe and the copper pipe on a broaching machine to obtain a composite pipe; then placing the composite tube in a vacuum annealing furnace for vacuum annealing treatment, and drawing the composite tube after the vacuum annealing treatment to obtain a fiber yarn;
the deformation of each pass is controlled to be 12 percent in the drawing process, the total deformation is controlled to be 99 percent, and the section ratio of the composite pipe is 0.4;
e) pickling the drawn composite tube in the step d) with a nitric acid solution to remove copper to obtain a fiber wire, then placing the fiber wire in an electroplating solution for electroplating, then washing with deionized water, and finally drying under a nitrogen atmosphere to obtain metal fibers;
the electroplating solution is an acid electroplating solution, the anode is a copper sheet, the cathode is a wire or a fiber, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, and in the mixed solution, the concentration of the copper sulfate pentahydrate is 1.2mol/L, the concentration of the perchloric acid is 1.4mol/L, and the concentration of the polyethylene glycol is 0.06 mol/L.
Example 3
a) Placing the metal block in acetone for treatment, then washing with deionized water, and finally drying under nitrogen atmosphere;
the metal block comprises the following components in percentage by weight:
c: 0.025 wt%, Ni: 11 wt%, Cr: 16.5 wt%, Mo: 2 wt%, P: 0.03 wt%, Si: 0.45 wt%, Mn: 0.5 wt%, S: 0.001 wt%, the balance being iron.
b) Placing the metal block dried in the step a) in electrolyte for electrochemical cleaning, then washing with deionized water, and finally drying under nitrogen atmosphere; the electrolyte is NaCl with the mass concentration of 4.5%, the negative electrode is a hollow copper electrode, and the positive electrode is a metal block;
c) drawing the metal block dried in the step b) for three times, and carrying out vacuum annealing on the wire material drawn each time; placing the wire obtained after each annealing in electroplating solution for electroplating, then washing with deionized water, and finally drying under nitrogen atmosphere;
controlling the pass deformation to be 4% and the total deformation to be 60% in the first drawing process, and annealing the bar in the drawing process, wherein the annealing temperature is 400 ℃ and the annealing time is 60 min;
controlling the pass deformation to be 8% and the total deformation to be 70% in the second drawing process, and annealing the bar in the drawing process, wherein the annealing temperature is 600 ℃ and the annealing time is 50 min;
controlling the pass deformation to be 12% and the total deformation to be 80% in the third drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 550 ℃ and the annealing time is 35 min;
the electroplating solution is an acid electroplating solution, the anode is a copper sheet, the cathode is a wire or a fiber, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, and in the mixed solution, the concentration of the copper sulfate pentahydrate is 1.1mol/L, the concentration of the perchloric acid is 1.4mol/L, and the concentration of the polyethylene glycol is 0.05 mol/L;
d) filling the wire material obtained after drying in the step c) into a copper pipe, and then compounding the copper pipe and the copper pipe on a broaching machine to obtain a composite pipe; then placing the composite tube in a vacuum annealing furnace for vacuum annealing treatment, and drawing the composite tube after the vacuum annealing treatment to obtain a fiber yarn;
the deformation of each pass is controlled to be 8 percent in the drawing process, the total deformation is controlled to be 99 percent, and the section ratio of the composite pipe is 0.9;
e) pickling the drawn composite tube in the step d) with a nitric acid solution to remove copper to obtain a fiber wire, then placing the fiber wire in an electroplating solution for electroplating, then washing with deionized water, and finally drying under a nitrogen atmosphere to obtain metal fibers;
the electroplating solution is an acid electroplating solution, the anode is a copper sheet, the cathode is a wire or a fiber, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, the concentration of the copper sulfate pentahydrate is 1.1mol/L, the concentration of the perchloric acid is 1.4mol/L, and the concentration of the polyethylene glycol is 0.05 mol/L.
Example 4
a) Placing the metal block in isopropanol for treatment, then washing with deionized water, and finally drying under nitrogen atmosphere;
the metal block comprises the following components in percentage by weight:
c: 0.22 wt%, Ni: 10.5 wt%, Cr: 16.3 wt%, Mo: 1.9 wt%, P: 0.25 wt%, Si: 0.43 wt%, Mn: 0.6 wt%, S: 0.0008 wt% and the balance iron.
b) Placing the metal block dried in the step a) in electrolyte for electrochemical cleaning, then washing with deionized water, and finally drying under nitrogen atmosphere; the electrolyte is NaCl with the mass concentration of 3.5%, the negative electrode is a hollow copper electrode, and the positive electrode is a metal block;
c) drawing the metal block dried in the step b) for three times, and carrying out vacuum annealing on the wire material drawn each time; placing the wire obtained after each annealing in electroplating solution for electroplating, then washing with deionized water, and finally drying under nitrogen atmosphere;
controlling the pass deformation to be 3.5% and the total deformation to be 80% in the first drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 500 ℃ and the annealing time is 50 min;
controlling the pass deformation to be 8% and the total deformation to be 90% in the second drawing process, and annealing the bar in the second drawing process, wherein the annealing temperature is 650 ℃ and the annealing time is 45 min;
controlling the pass deformation to be 13% and the total deformation to be 99% in the third drawing process, and annealing the bar in the drawing process, wherein the annealing temperature is 550 ℃ and the annealing time is 35 min;
the electroplating solution is an acid electroplating solution, the anode is a copper sheet, the cathode is a wire or a fiber, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, and in the mixed solution, the concentration of the copper sulfate pentahydrate is 1mol/L, the concentration of the perchloric acid is 1.5mol/L, and the concentration of the polyethylene glycol is 0.06 mol/L;
d) filling the wire material obtained after drying in the step c) into a copper pipe, and then compounding the copper pipe and the copper pipe on a broaching machine to obtain a composite pipe; then placing the composite tube in a vacuum annealing furnace for vacuum annealing treatment, and drawing the composite tube after the vacuum annealing treatment to obtain a fiber yarn;
the deformation of each pass is controlled to be 8 percent in the drawing process, the total deformation is controlled to be 90 percent, and the section ratio of the composite pipe is 0.8;
e) pickling the drawn composite tube in the step d) with a nitric acid solution to remove copper to obtain a fiber wire, then placing the fiber wire in an electroplating solution for electroplating, then washing with deionized water, and finally drying under a nitrogen atmosphere to obtain metal fibers;
the electroplating solution is an acid electroplating solution, the anode is a copper sheet, the cathode is a wire or a fiber, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, the concentration of the copper sulfate pentahydrate is 1.2mol/L, the concentration of the perchloric acid is 1.6mol/L, and the concentration of the polyethylene glycol is 0.05 mol/L.
Example 5
a) The metal block is placed in methanol for treatment, then is washed by deionized water, and finally is dried under nitrogen atmosphere;
the metal block comprises the following components in percentage by weight:
c: 0.028 wt%, Ni: 11.5 wt%, Cr: 16.7 wt%, Mo: 2.2 wt%, P: 0.3 wt%, Si: 0.47 wt%, Mn: 0.6 wt%, S: 0.0012 wt% and the balance iron.
b) Placing the metal block dried in the step a) in electrolyte for electrochemical cleaning, then washing with deionized water, and finally drying under nitrogen atmosphere; the electrolyte is NaCl with the mass concentration of 4%, the negative electrode is a hollow copper electrode, and the positive electrode is a metal block;
c) drawing the metal block dried in the step b) for three times, and carrying out vacuum annealing on the wire material drawn each time; placing the wire obtained after each annealing in electroplating solution for electroplating, then washing with deionized water, and finally drying under nitrogen atmosphere;
the pass deformation is controlled to be 4.5% in the first drawing process, the total deformation is 80%, the bar is annealed in the drawing process, the annealing temperature is 600 ℃, and the annealing time is 60 min;
controlling the pass deformation to be 7% and the total deformation to be 80% in the second drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 600 ℃, and the annealing time is 40 min;
controlling the pass deformation to be 10% and the total deformation to be 80% in the third drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 600 ℃, and the annealing time is 440 min;
the electroplating solution is an acid electroplating solution, the anode is a copper sheet, the cathode is a wire or a fiber, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, and in the mixed solution, the concentration of the copper sulfate pentahydrate is 1.1mol/L, the concentration of the perchloric acid is 1.4mol/L, and the concentration of the polyethylene glycol is 0.06 mol/L;
d) filling the wire material obtained after drying in the step c) into a copper pipe, and then compounding the copper pipe and the copper pipe on a broaching machine to obtain a composite pipe; then placing the composite tube in a vacuum annealing furnace for vacuum annealing treatment, and drawing the composite tube after the vacuum annealing treatment to obtain a fiber yarn;
the deformation of each pass is controlled to be 10 percent in the drawing process, the total deformation is 80 percent, and the section ratio of the composite pipe is 0.7;
e) pickling the drawn composite tube in the step d) with a nitric acid solution to remove copper to obtain a fiber wire, then placing the fiber wire in an electroplating solution for electroplating, then washing with deionized water, and finally drying under a nitrogen atmosphere to obtain metal fibers;
the electroplating solution is an acid electroplating solution, the anode is a copper sheet, the cathode is a wire or a fiber, the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, and in the mixed solution, the concentration of the copper sulfate pentahydrate is 1.1mol/L, the concentration of the perchloric acid is 1.4mol/L, and the concentration of the polyethylene glycol is 0.06 mol/L.
The diameter, elongation at break, and tensile strength of the metal fibers prepared in examples 1 to 5 were measured, and the results are shown in Table 1.
TABLE 1 test results of examples 1 to 5
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Metal fiber diameter (mum) | 6.2 | 6.4 | 6.0 | 6.1 | 6.3 |
| Elongation at Break (%) | 1.24 | 1.14 | 1.21 | 1.8 | 1.2 |
| Tensile Strength of fiber (CN) | 6.8 | 7.2 | 6.9 | 7.1 | 7.0 |
| Conductivity (MS/m) | 21.6 | 20.8 | 21.2 | 21.3 | 20.6 |
The metal fiber prepared in example 5 is made into radiation-proof clothes, and the results are shown in table 2 after being tested by the China Shanghai test center:
TABLE 2 radiation protection test values
The above-mentioned continuous microfiber separation process for improving radiation protection of metal provided by the present invention is described in detail, and the principle and the embodiment of the present invention are explained in detail by using specific examples, and the description of the above-mentioned examples is only used to help understanding the method of the present invention and the core concept thereof, and it should be noted that, for those skilled in the art, the present invention may be modified and modified without departing from the principle of the present invention, and the modified and modified aspects also fall into the protection scope of the claims of the present invention.
Claims (4)
1. A continuous microfiber separation process for improving radiation resistance of metal is characterized by comprising the following steps:
a) placing the metal block in an organic solvent for treatment, then washing with deionized water, and finally drying under nitrogen atmosphere;
b) placing the metal block dried in the step a) in electrolyte for electrochemical cleaning, then washing with deionized water, and finally drying under nitrogen atmosphere;
c) drawing the metal block dried in the step b) for three times, and carrying out vacuum annealing on the wire material drawn each time; placing the wire obtained after each annealing in electrolyte for electrochemical cleaning, then washing with deionized water, and finally drying under nitrogen atmosphere;
d) filling the wire material obtained after drying in the step c) into a copper pipe, and then compounding the copper pipe and the copper pipe on a broaching machine to obtain a composite pipe; then placing the composite tube in a vacuum annealing furnace for vacuum annealing treatment, and drawing the composite tube after the vacuum annealing treatment to obtain a fiber yarn;
e) pickling the drawn composite tube in the step d) with a nitric acid solution to remove copper to obtain a fiber wire, then placing the fiber wire in an electroplating solution for electroplating, then washing with deionized water, and finally drying under a nitrogen atmosphere to obtain high-metal fibers;
in the step c), the pass deformation is controlled to be 3-5% in the first drawing process, the total deformation is 60% -90%, the bar is annealed in the drawing process, the annealing temperature is 400-600 ℃, and the annealing time is 40-60 min;
controlling the pass deformation to be 6-9% and the total deformation to be 70-90% in the second drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 600-700 ℃, and the annealing time is 30-50 min;
controlling the pass deformation to be 10-15% and the total deformation to be 80-99% in the third drawing process, annealing the bar in the drawing process, wherein the annealing temperature is 500-600 ℃, and the annealing time is 30-40 min;
in the step c) and the step e), the electroplating solution is an acid electroplating solution, the anode is a copper sheet, and the cathode is a wire or a fiber;
the acid electroplating solution is a mixed solution of copper sulfate pentahydrate, perchloric acid and polyethylene glycol, wherein the concentration of the copper sulfate pentahydrate is 1-1.2 mol/L, the concentration of the perchloric acid is 1.2-1.6 mol/L, and the concentration of the polyethylene glycol is 0.04-0.06 mol/L;
the polyethylene glycol is one of polyethylene glycol 4000, 6000 and 8000;
the metal block comprises the following components in percentage by weight:
c: 0.02-0.03 wt%, Ni: 10-12 wt%, Cr: 16-17 wt%, Mo: 1.8-2.3 wt%, P: 0.02-0.035 wt%, Si: 0.4-0.5 wt%, Mn: 0.4-0.65 wt%, S: 0.0005 to 0.0015 wt%, the balance being iron.
2. The continuous microfiber separation process according to claim 1, wherein said organic solvent in step a) is acetone, isopropyl alcohol or methanol.
3. The continuous microfiber separation process according to claim 1, wherein in the step b), the electrolyte is NaCl with a mass concentration of 3-5%, the negative electrode is a hollow copper electrode, and the positive electrode is a metal block.
4. The continuous microfiber separation process according to claim 1, wherein in step d), the controlled pass deformation amount during the drawing process is 8% to 12%, the total deformation amount is 80% to 99%, and the section ratio of the composite tube is 0.4 to 0.9.
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| CN201710724847.8A CN107552588B (en) | 2017-08-22 | 2017-08-22 | Continuous microfiber separation process for improving radiation resistance of metal |
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| CN203026194U (en) * | 2012-11-19 | 2013-06-26 | 江苏华旺科技有限公司 | High-strength copper-plated stainless steel wire |
| CN103611757A (en) * | 2013-12-10 | 2014-03-05 | 西部新锆核材料科技有限公司 | Method for preparing zirconium metal filaments |
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| EP1361932A1 (en) * | 2001-02-21 | 2003-11-19 | Pall Corporation | Process for making fine metallic mesh |
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| US5454163A (en) * | 1993-09-16 | 1995-10-03 | Mcdonald; William K. | Method of making a foraminous article |
| CN1535324A (en) * | 2001-07-20 | 2004-10-06 | �����ʩ���عɷݹ�˾ | Bundle drawn stainless steel fibers |
| CN203026194U (en) * | 2012-11-19 | 2013-06-26 | 江苏华旺科技有限公司 | High-strength copper-plated stainless steel wire |
| CN103611757A (en) * | 2013-12-10 | 2014-03-05 | 西部新锆核材料科技有限公司 | Method for preparing zirconium metal filaments |
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