KR100782176B1 - Adiabatic fiber material with refractory mix spinning yarns and manufacturing method thereof - Google Patents

Abstract

An adiabatic fiber material using refractory mixed yarns and a manufacturing method thereof are provided to use the adiabatic fiber material continuously for a long time even at the temperature over 1000 deg.C, to secure good stability by restraining expansion and contraction caused by the change of temperature, and to utilize the adiabatic fiber material as an electric insulator by using SiO2(Silicon Dioxide). A refractory adiabatic fiber material is produced by weaving or knitting mixed yarns composed of para-aramid fiber of 30~60wt.% and silica fiber of 40~70wt.%. The para-aramid fiber has fiber length of 30~120mm and 1~6 deniers and the silica fiber has fiber length of 60~150mm and 2~8 deniers. The silica fiber contains SiO2 of 95~98wt.%, Al2O3(Aluminum Trioxide) of 0.5~3.5wt.%, and simple impurities of 1.5wt.%.

Description

Insulator using fire-resistant blended yarn and method for manufacturing thereof Adiabatic fiber material with refractory mix spinning yarns and manufacturing method

1 is a manufacturing process diagram of the refractory blended yarn according to the present invention

Figure 2a to 2e shows the shape of the braid according to the present invention

Figure 2a is a circular braid, Figure 2b is a triangular braid,

Figure 2c is a cross-sectional view of Figure 2b, Figure 2d is a four-sided braid,

FIG. 2E is a cross-sectional view of FIG. 2D

 The present invention relates to a heat-insulating fiber using a fire-resistant blended yarn and a method of manufacturing the same, and more particularly, to a heat-insulating material using a fire-resistant blended yarn made by mixing and spinning para-aramid fibers and silica fibers without using conventional asbestos, and a method of manufacturing the same. It is about.

   In general, the fiber products are combustible materials, there is a method of fire-resistant treatment to prevent the combustion by fixing the fire retardant to the fiber products to give a fire resistance, but these refractory fiber products are a cause of price increases due to the complicated refractory treatment process, Not only the fireproof agent may be released due to friction during handling, but after a certain period of time, there is a problem that the fire resistance deteriorates easily and the combustion of organic fibers causes toxic gases.

   The fire-resistant fiber is mainly used for clothing such as firefighting clothing or for interior decoration such as interior curtains, carpets, tables, and desks in buildings such as hotels, inns or large buildings. It is used for internal products such as airplanes to prepare for fire hazards.

   In addition, carbide fibers, asbestos fibers, glass fibers, etc. are known as fire resistant fibers, but carbide fibers are obtained by carbonizing cellulose fibers, acrylic fibers, etc., but are somewhat heat resistant, but at high temperatures, they decompose naturally after a certain time. As it tends to be lost, it is not suitable to be used by itself. Asbestos fiber is mainly used alone, but its use is limited because of its carcinogenicity and toxicity. Especially, a lot of dust is generated and it can be inhaled through the respiratory system. In case of fatal adverse effects of the fiber.

   Therefore, a method of producing a composite heat-resistant fiber having good heat resistance by blending aramid fibers having good tensile strength and elongation with carbon fibers having good heat resistance has been filed by the applicant as 10-2005-0120506, which has a degree of heat resistance However, when 3 to 5 minutes have elapsed at a high temperature of 1000 ° C. or more, the fiber is completely decomposed and its shape is lost.

  The present inventors have devised to solve the disadvantages of the blended yarns of aramid fibers and carbon fibers to provide a fiber that maintains the shape of the fibers intact even after a long time at high temperature. By mixing silica fibers having good stability, the inventors have invented fire resistant fibers having excellent fire resistance and thermal barrier properties and heat insulating materials using the same.

   The present invention for solving the drawbacks of the prior art as described above by mixing and spinning the para-aramid fibers and silica fibers with good shape stability even at high temperatures without containing carcinogenic toxic substances such as asbestos, the shape to the flame It is to provide a heat insulator using a fire-resistant blended yarn having excellent heat insulation effect by maintaining.

  It is a second object of the present invention to provide a fiber product for use as a heat-resistant composite tape by providing a variety of heat shielding fiber products in various forms by weaving or knitting using the blended yarn. .

   The present invention for achieving the above-mentioned objects is described in detail below.

   The present invention provides a fire-resistant blended yarn composed of 30 to 60% by weight of 1 to 6 denier paraaramid fibers having a fiber length of 30 to 120 mm and 40 to 70% by weight of silica fibers having a fineness of 60 to 150 mm and 2 to 8 deniers. It is woven or knitted to form a heat insulator in the form of tape, tube, fabric and braid.

The silica fiber has a content of 95% to 98% by weight of silicon oxide (SiO ₂ ), 0.5 to 3.5% by weight of aluminum trioxide (Al ₂ O ₃ ) and 1.5% by weight of other components, so that the it has the property of maintaining a shape a prolonged continuous even above 1000 ℃ and do not substantially stretch in accordance with the change of temperature and excellent in stability, SiO ₂ is and forms a main component, which is a simple impurities that are mixed in the silica fiber Since the content of other components, i.e., impurities is extremely small, it may have a good effect as an electric insulator.

   In addition, as a method of manufacturing the heat-insulating fiber using the fire-resistant blended yarn of the present invention, 1 to 6 denier para-aramid fibers having a fiber length of 30 to 120 mm, and a fiber length of 60 to 150 mm and fineness of 2 to 8 denier silica fibers are prepared. A blend surface process of forming a wrap by mixing them in a ratio of 30 to 60% by weight of para-aramid fibers and 40 to 70% by weight of silica fibers;

   Carding process for preparing slivers by uniformly arranging fibers while removing contaminants by forming sliver wraps by putting the fabrics prepared in the horn-tapping process first and then arranging the sliver wraps. )fair,

   12 ~ 14 strands of the prepared slivers are mixed again to remove the short fibers, cuts, and miscellaneous cuts in the carding process, and to make a more powerful combed yarn. (Combing) process,

   Drawing process of producing thinner slivers by drawing and pulling 4 to 5 strands

   Roving process for manufacturing the roving while further stretching the sliver manufactured in the softening process, giving a slight twist,

   Spinning process for drawing yarn while drawing and twisting the irradiation made in the spinning process to the required thickness,

   Water Conditioning and Winding process, in which the yarn manufactured in the spinning process is swamped to maintain the process moisture content and rewound in a cone, spool or bobbin depending on the purpose of use.

   Pulverizing and twisting process of doubling and twisting two or more threads in order to increase the strength of the yarn manufactured in the raid and winding process,

    Re-winding process to rewind the bobbin, sprue or cone while swiping to maintain the optimal condition of yarns manufactured in the weaving and weaving process,

   Weaving and knitting fastening, weaving or knitting using rewinding fire-resistant blended yarn to manufacture tape, tube, fabric or braid type insulation fibers,

   It consists of the processing process which processes the tape-like, tubular-shaped, or braid-type heat insulation fiber obtained by the manufacturing and knitting process according to a use.

   The fire-resistant blended yarn of the present invention decomposes and disappears after a long time at a high temperature of 1000 ° C. or higher, but the silica fiber maintains its shape, and is suitable for use as a heat insulating material in a workplace such as steel ingot which requires high heat. Become a blended yarn.

   In addition, the heat-insulating fiber using the fire-resistant blended yarn manufactured by the above process is manufactured into a tape, tube, fabric or braid type by a loom, a knitting machine or other means, and then processed and processed into building interior materials, automobile airplanes, and the like. Interior products, such as clothing for firefighting suits, interior coverings such as building curtains, carpets, tables, desks, furniture, etc., as well as various asbestos substitutes, between hot tops and ingots during steelmaking. It can be used for sealing materials, high pressure hose tube and welding spark sheet for preventing the flow of iron.

   If the fiber length of the para-aramid fiber is less than 30mm and the fiber length of the silica fiber is less than 60mm in the manufacture of the blended yarn, it is difficult to spun the spinning, the fiber length of the para-aramid fiber is longer than 120mm and the fiber length of the silica fiber is longer than 150mm The fiber is entangled when combed in the carding process, which is not suitable. Especially, the silica fiber is easily broken. The fineness can be selected according to the purpose of use, but the fineness of the para-aramid fiber is less than 1 denier. In the case of, if the yarn is cut in the carding process, the composition is reduced, and if it is thicker than 6 denier, there is a risk of slipping when mixing with silica fiber, and silica fiber tends to be more easily cut than para-aramid fiber. It is to use a slightly coarse fiber.

   In addition, the reason why the fiber length of the silica fiber is longer than that of the para-aramid fiber is also because the silica fiber tends to be more easily cut than the para-aramid fiber.

   On the other hand, it is natural for the workability that cylinders and doffers are used in the blending process and the carding process depending on the degree of fineness and fiber length of the raw material used, and in general, when the fineness is long or the fiber length is long, Use high or high density and vice versa to use high or low density of cloth, which requires careful attention.

   Also, in general, the number of revolutions (RPM) of the take-in, cylinder, worker, stripper, cylinder, and doffer is adjusted according to the supply and discharge amount of the fiber and the draw ratio. It is natural to do that.

   In addition, in order to maintain the prepared blended yarn in optimum conditions, it is preferable to squeeze each process after the spinning process so as to maintain the normal process moisture content, which is also required in the weaving and knitting process.

   On the other hand, as shown in the drawing, the braid made of fire resistant blended yarns is inserted into the gaps of various structures such as the gap of the hot top of steel ingots by manufacturing a polygonal braid of triangle or quadrilateral using a circular braid knitting device as well as a circular cross section. It prevents heat transfer by zooming and keeps the shape of silica fiber even after a long time at high temperature, so it can work safely without leakage of hot water. Other fabrics made of fire-resistant blended yarn of the present invention are used as an inner protective packaging material. In this case, it keeps its shape even at high temperature, so it can protect the internal material from fire.

   Reference numeral 10 denotes a screening, 20 a partial irradiation, and 30 a braid.

The present invention as described above

First, it can be used continuously for more than 1000 ℃ for a long time, and it has excellent stability because it has little elasticity according to the change of temperature.Since SiO ₂ is the main component, it has a good effect as an electric insulator. It is possible to maintain the shape with little shrinkage and relaxation by heat, thereby reducing the risk of high temperature.

  Second, even at high temperatures, carcinogenic or toxic components such as glass fiber or asbestos fiber are not detected and dust is not generated, so it can be safely used.

  Third, after manufacturing into tape type, tube type, fabric type or braid type by loom, knitting machine or other means and processing, it is for building interior materials, interior products such as automobile airplanes, clothing for firefighting, etc. Interior as a cover of furniture such as curtains, carpets, tables and desks, as well as various asbestos substitutes, sealing materials to prevent flow of hot water between the hot top and ingots during steelmaking operations, and high pressure hoses. Its uses are various, such as for tubes and spatter sheets. Fourth, the fiber is relatively soft, so that the work can be made according to the desired shape such as gap blocking, packing, or covering material of pipes or hoses.

Claims (5)

  In the fire-resistant insulator, 30 to 60% by weight of 1 to 6 denier para-aramid fibers having a fiber length of 30 to 120 mm, 60 to 150 mm of fiber length, and 40 to 70% by weight of silica fibers having 2 to 8 deniers of fineness An insulator using a fire resistant blended yarn, characterized in that the insulator is formed by weaving or knitting the blended yarn. The method of claim 1, wherein the silica fiber has a silicon oxide (SiO ₂ ) content of 95% to 98% by weight, aluminum trioxide (Al ₂ O ₃ ) content of 0.5 to 3.5% by weight of simple impurities mixed in the silica fiber 1.5 weight% of heat insulators using fire-resistant blended yarns, characterized by the above-mentioned. delete delete   In the method for producing a fire-resistant blended yarn, 1 to 6 denier para aramid fibers having a fiber length of 30 to 120 mm and silica fibers having a fiber length of 60 to 150 mm and fineness of 2 to 8 deniers are prepared and these are para-aramid fibers 30 to 60. A blend surface process of forming a wrap by mixing at a ratio of 40% by weight to 40% by weight of silica fibers;    Carding process for preparing slivers by uniformly arranging fibers while removing contaminants by forming sliver wraps by putting the fabrics prepared in the horn-tapping process first and then arranging the sliver wraps. )fair,    12 ~ 14 strands of the prepared slivers are mixed again to remove the short fibers, cuts, and miscellaneous cuts in the carding process, and to make a more powerful combed yarn. (Combing) process,    Drawing process of producing thinner slivers by drawing and pulling 4 to 5 strands    Roving process for manufacturing the roving while further stretching the sliver manufactured in the softening process, giving a slight twist,    Spinning process for drawing yarn while drawing and twisting the irradiation made in the spinning process to the required thickness,    Water Conditioning and Winding process, in which the yarn manufactured in the spinning process is swamped to maintain the process moisture content and rewound in a cone, spool or bobbin depending on the purpose of use.    Pulverizing and twisting process of doubling and twisting two or more threads in order to increase the strength of the yarn manufactured in the raid and winding process,     Re-winding process to rewind the bobbin, sprue or cone while swiping to maintain the optimal condition of yarns manufactured in the weaving and weaving process,     Weaving and knitting process of weaving or knitting using rewinding fire resistant blended yarn to produce tape, tube, fabric or braid type insulation fibers, tape, tubular, fabric or obtained from weaving and knitting process A method of manufacturing a heat insulator using a fire-resistant blended yarn, characterized by comprising a processing step of processing a braid-type insulating fiber in accordance with the use.

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