Highly coercive fabric

FIELD: woven fabrics for magnetic systems, radioactive radiation shields, biologic process stimulation in living organisms.

SUBSTANCE: proposed highly coercive fabric is, essentially, reticular structure of linen weave of polyamide warp threads and shoot wires, and combination of acrylic copolymers and highly coercive neodymium-iron-boron alloy powder; linear density of warp threads and shoot wires is 20 to 100 tex, and their quantity per meter is 1 500 to 6 500, proportion of ingredients being as follows, mass percent: polyamide threads, 10-50; acrylic copolymers, 15-25, highly coercive neodymium-iron-boron alloy powder, 65-35.

EFFECT: enhanced flexibility and ergonomic efficiency, facilitated manufacture.

1 cl, 1 tbl, 3 ex

 

The invention relates to textile materials and can be used in magnetic systems, for protection against radioactive radiation, as well as for activation of biological processes in living organisms.

Known leaf-vysokokoertsitivnye material, which is made by mixing powder of a magnetic material based on rare earth elements with an elastic resin, such as epoxy [1]. The mixture of the resin and the powder is ground and rolled, getting material in the form of a sheet. The disadvantage of this material is substantial heterogeneity in the structure and, consequently, increased internal magnetic losses, and lower strength characteristics, including the tendency to brittle fracture.

Closest to the proposed material is a flat, flexible magnet, consisting of a binder polymer substance in the form of a mesh matrix and powder vysokokoertsitivnye material [2]. The mesh structure in this magnet is produced by manufacturing periodically arranged protrusions and depressions. The disadvantages of this material include: a large thickness, the increased loss of the magnetic flux and the lack of flexibility in the manufacture of products in solid form, in particular with a small radius of curvature.

The technical result due to the data of the image is Itanium, is a significant increase of flexibility, comfort and adaptability sheet vysokokoertsitivnye material with a periodic structure of the polymer matrix in the form of a grid.

This technical result is achieved by the fact that in vysokokoertsitivnye fabric with polymer mesh matrix containing powder vysokokoertsitivnye material according to the invention the polymer matrix is formed of a plain weave nylon core and weft threads with the introduction of its composition acrylic copolymers and powder vysokokoertsitivnye alloy neogoniolithon, with a linear density of main and weft threads is 20...100 Tex in the amount of 500...6500 threads per 1 m in the following ratio, wt.%.

polyamide yarn10...50
acrylic copolymers15...25
powder vysokokoertsitivnye
readinglanguage alloy65...35

The plain weave fabric of acrylic yarns in comparison with monolithic materials, polymer based, technologically advanced, as is made by traditional textile technology, is comfortable, flexible and high resistance to fracture. Used acrylic the copolymers are easily dispersed form solutions with powder vysokokoertsitivnye material and provide good traction powder with a nylon cloth.

Characteristics obtained on fabrics of different composition in accordance with this invention and the material, which was the prototype shown in the table.

Examples of specific implementation.

Example 1. Polyamide warp and weft to obtain tissue taken with a linear density of 20 Tex, the number of threads to 1 meter was $ 6500. The percentage weight fabric (polyamide fibers) was 50%, acrylic copolymers, 15%, powder vysokokoertsitivnye alloy of Nd2Fe14B 35%.

Example 2. As a matrix selected fabric weave density nylon yarns in the warp and weft equal to 3400 threads per meter. The linear density of the filaments was equal to 50 Tex. Acrylic copolymers and the fabric was, respectively, 20% and 30% by weight, and the proportion by weight vysokokoertsitivnye alloy of Nd2Fe14B was equal to 50%.

Example 3. Characteristics of polyamide fabric are as follows: the linear density of warp and weft threads 95 Tex, the number of threads to 1 metre in the warp and weft 1500, the proportion by weight of polyamide filaments 20%, acrylic copolymers, 20%, powder vysokokoertsitivnye material 60%.

The table shows that the main energy characteristics of the magnetic properties for the proposed vysokokoertsitivnye fabric in accordance with example 3 and prototype-(BH)max is almost the same. This result should be considered very positive, TC. the thickness of the offered fabric is approximately three times smaller than the prototype. Characteristics of flexibility, deformation, resistance to the spread of defects in the form of tears from the proposed material exceeds the corresponding value from the prototype 1.5...3 times. Vysokokoertsitivnye fabric easily acquires a different shape, in contact with the body, that is, it is ergonomic. Hard same with the protrusions on the surface of the material for the prototype above performance comfort is not. The content of the components of the proposed tissue is determined by its functional purpose.

Sources of information

1. The Japan patent 2887295 B2, H 01 F 1/053, publ. 26.04.99.

2. U.S. patent 5621369, 6 H 01 F 7/02, publ. 15.04.97

Table
Characteristics tested vysokokoertsitivnye materials
OptionContent, wt.%The strength of the strip width of 50 mm with strain 5 mm, HElongation of the strips of fabric width 50 mmThe number of threads to 1 meterIndex of flexibility, relative unitThe maximum value of works by induction on the tension magnitno the field (NR) maxMGSA
Polyamide yarnAcrylic polymersThe powder of the alloy of Nd2Fe14B
The placeholder---3207,8-1004,20
Example 150153596014,565004102,6
Example 230205071012,63400260a 3.9
Example 310253564011,715001904,15

Vysokokoertsitivnye fabric having a network structure formed by the polymer, and containing powder vysokokoertsitivnye material, wherein the fabric is a combination of the mesh plain weave polyamide main and weft yarns, acrylic copolymers and powder vysokokoertsitivnye readinglatino alloy, with a linear density of main and weft threads is 20-100 Tex, and their number 1500-6500 threads per 1 m in the following ratio, wt.%:

Polyamide yarn10-50
Acrylic copolymers15-25
Powder vysokokoertsitivnye
readinglatino alloy65-35



 

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SUBSTANCE: proposed magnetically soft composite material produced in the form of very thin strip by casting flat flow of melt on cooling body surface followed by fast hardening has following composition[Fe]αMaMα"eMβfBdSicXgGbJh, where Fe is base; M is element of group incorporating Co and Ni; Mα" is element of groupincorporating Nb, W, Ta, Zr, Mo, and V; Mβ is element of group incorporating Cr and Mn; X is element of group incorporating C, Ge, Ga, P, and Sb; G is element of group incorporating Cu and/or Ag; J relates to high-melting compositions of BN, Si3N4, NbN, TyaN, ZrN, B4C, SiC, NbC, VC, W2C, ZrC in the form of colloidal solution clusters, proportion of ingredients being as follows, atom percent: 0 ≤ a ≤ 30; 1.5 ≤ e ≤ 3; 0 ≤ f ≤ 2; 6 ≤ d ≤10; 9 ≤ c ≤16; 0 ≤ g ≤ 2; 0.5 ≤ b ≤ 0.9; 0.2 ≤ h ≤ 0.5; α is the rest provided 70 ≤ α + a ≤ 80 condition is satisfied. Strip produced in the process can be longitudinally cut into desired widths by means of circular shears.

EFFECT: improved magnetic characteristics, facilitated alloying, eliminated strip fragility.

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FIELD: metallurgy; alloys used for producing transformers, reactors, and toroidal spiral cores.

SUBSTANCE: proposed Fe-Co-Ni base magnetically soft amorphous alloy is produced in the form of strip in the course of casting flat flow of melt on cooling body surface and high-speed hardening. Alloy composition formula is (Fe-Co-Ni)aAbLcBae, where A are amorphous-rendering elements: B, Si, P; L are alloying elements: V, Cr, Mn, Ge, Zr, Nb, Mo, W, Bi, Cu, proportion of ingredients being as follows, atom percent: 12 ≤ b ≤ 22; 0 ≤ c ≤ 7; 0.1 ≤ e ≤ 0.8; a is the rest. In the process strip can be obtained of different thickness and free from surface flaws and ruptures within single continuous casting cycle.

EFFECT: enhanced melt fluidity and density, reduced surface porosity of strip.

1 cl, 3 tbl, 3 ex

FIELD: woven fabrics for magnetic systems and radioactive radiation shields.

SUBSTANCE: proposed ferromagnetic fabric characterized in enhanced strength and magnetic characteristics, ability of absorbing and dissipating electromagnetic radiation has warp, polymeric binder, and powdered ferromagnetic material. Fabric warp is made by linen weave method. Warp threads and shoot wires are made of alternating lavsan and magnetically soft single threads. Number of threads per meter is 5 000 to 7 000. Magnetically soft threads are made either of supermalloy or molybdenum permalloy with diameter measuring 0.05 to 0.1 mm; linear density of lavsan threads is 10 to 20 tex. Proportion of fabric ingredients is as follows, mass percent: lavsan thread, 10-15; magnetically soft single threads, 20-25; binder (acrylic copolymers), 10-15; highly coercive alloy powder, 50-55.

EFFECT: enhanced radioactive radiation shielding efficiency of fabric.

1 cl, 1 tbl, 1 ex

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