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Magnetic field loomage as well as preparation method and application thereof

A magnetic field and fabric technology, applied in the direction of magnetic field/electric field shielding, shielding, fabrics, etc., can solve the problems of hard fabrics, easy to rust and break, poor wearability, etc.

Inactive Publication Date: 2009-05-06
NAVY MEDICINE RES INST OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] CN1234910C introduces a multifunctional aluminum-based flexible shielding material preparation technology, which uses an electrochemical method to coat a layer of soft magnetic alloy film on the aluminum base to achieve the purpose of reflection and electromagnetic shielding, and is suitable for high-frequency electromagnetic shielding, electric field shielding and In the fields of low-frequency magnetic shielding, visible light reflection, infrared radiation reflection, etc., there is no mention of whether the constant magnetic field and the extremely low-frequency electromagnetic field have a shielding effect
[0007] There is a document in our country that introduces a ferromagnetic wire fabric, the wire diameter is thick, the thinnest is 0.7mm, and the fabric is hard, easy to rust and break, and has poor wearing performance.
[0008] The above-mentioned shielding materials have various defects, and it is difficult to meet the requirements of having a certain wearing performance, effectively shielding a constant magnetic field and an extremely low frequency electromagnetic field (DC ~ 300Hz), and being applicable to personal protection.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Magnetic field loomage as well as preparation method and application thereof
  • Magnetic field loomage as well as preparation method and application thereof
  • Magnetic field loomage as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of permalloy wire:

[0037] Permalloy 1J85 drawn into filaments, wire diameter 0.15mm;

[0038] Softening annealing: the annealing temperature is 1050°C~1080°C, and the passing speed of the permalloy wire is 2~8 m / min;

[0039] Magnetic annealing: first keep the temperature in the annealing furnace at 1050°C-1150°C for 5 hours, then cool at a rate of 150°C / hour to 500°C-700°C, then quickly cool at a rate of 400°C / hour to 200°C, and then air-cool ( cooled in air) to room temperature.

[0040] The prepared permalloy wire is soft and has certain magnetic properties.

[0041] The above permalloy wire is used as the weft yarn, and 32 s / 2 Combed cotton yarn is used as warp yarn, after warping, it is weaved on the machine.

[0042] The fabric structure uses 5 pieces of 2-flying satin weave.

[0043] The warp density is 272 / 10cm, and the weft density is 400 / 10cm.

[0044] Test results: see Table 1.

[0045] Table 1

[0046]

Embodiment 2

[0048] Preparation of permalloy wire:

[0049] Permalloy 1J79 drawn into filaments, wire diameter 0.10mm;

[0050] Softening annealing: the annealing temperature is 1050°C~1080°C, and the passing speed of the permalloy wire is 2~8 m / min;

[0051] Magnetic annealing: Firstly, control the temperature in the annealing furnace at 1050°C to 1150°C for 5 hours, then cool to 500°C to 700°C at a rate of 150°C / hour, then quickly cool to 200°C at a rate of 500°C / hour, and then air cool to room temperature.

[0052] The prepared permalloy wire is soft and has certain magnetic properties.

[0053] Adopt 21 s The combed polyester-cotton yarn is used as the warp yarn; the above-mentioned permalloy wire is used as the weft yarn, which is woven on the machine after warping.

[0054] The organizational structure is 3 / 1 right twill.

[0055] The fabric warp density is 312 / 10cm; the weft density is 440 / 10cm. ,

[0056] Test results: see Table 2.

[0057] Table 2

[0058]

Embodiment 3

[0060] Preparation of permalloy wire:

[0061] Permalloy 1J79 drawn into filaments, wire diameter 0.035mm;

[0062] Softening annealing: the annealing temperature is 1050°C~1080°C, and the passing speed of the permalloy wire is 2~8 m / min;

[0063] Magnetic annealing: First, control the temperature in the annealing furnace at 1050°C to 1150°C for 2 hours, then cool to 500°C to 700°C at a rate of 200°C / hour, then quickly cool to 200°C at a rate of 450°C / hour, and then air cool to room temperature.

[0064] The prepared permalloy wire is soft and has certain magnetic properties.

[0065] Adopt above-mentioned permalloy wire to make weft yarn, above-mentioned permalloy wire and 80 s / 2 The combed cotton yarn is arranged in a 2:1 arrangement as the warp yarn, and is weaved on the machine after warping. 3 / 1 right twill weave is applied in the fabric weave structure.

[0066] The warp density is 360 / 10cm, and the weft density is 272 / 10cm.

[0067] The fabric is soft and dimensi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to magnetic field shielding textile fabrics, a preparation method and application of the magnetic field shielding textile fabrics. The invention discloses the magnetic field shielding textile fabrics, which are formed by interlacing of permalloy wires and wearing yarns. The magnetic field shielding textile fabrics which are prepared by the permalloy wires can effectively attenuate a stationary magnetic field and a low-frequency magnetic field with DC - 300 Hz, are soft, can be cut, and can be applied to individual protection and magnetic field source shielding.

Description

technical field [0001] The invention relates to a fabric, in particular to a fabric with a magnetic field shielding function and a preparation method and application thereof. Background technique [0002] Magnetic field shielding generally refers to the shielding of DC and low frequency magnetic fields (below 100kHz). Generally, two methods are used: one is to shield the magnetic field source, shield the magnetic field in a specified space, and prevent it from spreading outward. The other is to shield the interfered source and attenuate the influence of the ambient magnetic field on the interfered source. Compared with high-frequency electromagnetic fields (0.1MHz-300GHz), magnetic field shielding has certain difficulties. In engineering, magnetic field shielding is mostly made of metal plates, metal sheets or metal foils with high magnetic permeability materials such as steel and iron, and then designed into closed shells such as boxes and shells. Metal plates and metal ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D15/00H05K9/00C21D9/52G12B17/02D03D15/25D03D15/50
Inventor 刘洪凤张富丽李亿光刘丽英李荣杰
Owner NAVY MEDICINE RES INST OF PLA
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