KR20230026644A - Hybrid yarn for protective clothing and base fabric and protective clothing using the same - Google Patents

Abstract

The present invention relates to a hybrid yarn (60) which is used as a base fabric for manufacturing protective clothes (50). According to the present invention, the hybrid yarn (60) for manufacturing protective clothes is manufactured by using basalt fiber as a core yarn (70) and being double covered with aramid fibers or oxidized polyacrylonitrile fibers as a first covering yarn (80) and a second covering yarn (85), thereby having excellent shape stability and durability at high temperature and when subjected to flames and having excellent barrier properties against molten metal.

Description

Hybrid yarn for protective clothing and base fabric and protective clothing using the same }

The present invention relates to a composite yarn for manufacturing safety protective clothing, a base fabric for manufacturing safety protective clothing using the same, and safety protective clothing, and by combining basalt fiber and aramid fiber, the high flame retardancy of basalt fiber and the soft touch and feel of aramid fiber are expressed. It relates to a composite yarn for manufacturing safety protective clothing that can be manufactured, a base fabric for manufacturing safety protective clothing using the same, and a safety protective clothing.

Safety protective clothing worn by workers at industrial sites includes firefighting clothing, bulletproof clothing, combat clothing, and working clothing, and requires physical properties such as high strength, heat resistance, and chemical resistance.

The safety protective clothing acts to protect workers' bodies from risk factors that may occur in industrial sites such as construction, manufacturing, sports and leisure, food, distribution, entertainment, power generation and electricity, medical care, resource extraction, research and development, and fire and disaster prevention. will do

It is reported that the growth rate of PBI (Polybenzimidazole) fiber will be high in the future, while aramid fiber accounts for more than 1/3 of the total market for the fiber used to manufacture these safety protective clothing.

Fibers for manufacturing safety protective clothing as described above require flame retardancy and heat resistance, and accordingly, aramid fibers or carbon fibers have been mainly used. In particular, safety protective clothing worn to protect the body of a worker in a high-temperature environment such as a furnace in a steel mill must have flame retardancy and barrier properties against molten metal. Worksites such as blast furnaces in steel mills are places where safety protective clothing is unavoidable due to the environment where molten iron and sparks of over 1,000 ℃ are splashed. It is not discharged, so workers tend to avoid it.

Workers working in extreme environments such as blast furnaces in steel mills are subjected to direct damage from thermal stress caused by convective heat and ultra-high temperature sparks and metal melts. blessing is required

In addition, since most of the safety protective clothing for the above purpose is made of leather, it shrinks at high temperatures, and is heavy and does not have ventilation. That is, leather has many disadvantages as a safety protective clothing, such as the inability to efficiently work as workers are restricted in their activities wearing safety protective clothing, and in particular, they suffer from dermatitis (sweat rash). In addition, aluminum-coated safety protective clothing has been developed and used, but it provides only a protective function against heat, and is heavy and thick, and the durability of the metal reflective layer coated with an aluminum layer is low, so improvement is required.

Looking at the prior art for the safety protective clothing, Korean Patent Registration No. 10-1009942 (2011. 01. 20.) uses OXIDANT for the ramp, and OXIDANT and panop for the weft ( PANOF) as a double woven fabric woven with two types of yarn, a fabric for flame-retardant clothing configured to provide a flame-retardant function and a flame-resistant clothing with good tensile strength and comfort on the inner surface is disclosed, Republic of Korea Patent Registration No. 10-1614873 (2016 04. 22.), a first layer made of aramid fibers, a second layer composed of a thin film made of Teflon-based resin, and a space formed on one side of the second layer and formed between the two fabrics are elastic. A fabric for safety protective clothing of firefighting suits and chemical protective clothing is disclosed, characterized in that it comprises; a third layer connected with pile yarns to form one fiber layer.

However, the safety protective clothing according to the prior art as described above has a problem in that the process step is very complicated and the production unit cost of products produced through the process is increased, thereby reducing the economic efficiency and value. In particular, there is a problem in that the performance such as the barrier property of molten metal during use in a high-temperature environment is rapidly deteriorated.

Therefore, it is urgently required to develop a textile material for manufacturing safety protective clothing that can protect the safety of workers working in extreme environments such as furnaces, has excellent activity for work efficiency, and can provide a pleasant working environment.

In addition, in the case of the existing fabric for manufacturing safety protective clothing, it has a disadvantage that it is too stiff, so it is not only uncomfortable to wear, but also has limitations in activity, so workers who wear it are experiencing great difficulties.

The present invention has been made to solve the above problems, and has excellent activity so as to provide a pleasant working environment to workers wearing safety protective clothing, and safety with excellent flame retardancy, insulation, and metal molten metal blocking. It is an object of the present invention to provide a composite yarn 60 for manufacturing protective clothing, a base fabric 50 for manufacturing safety protective clothing using the same, and safety protective clothing. However, the problem to be solved by the present invention is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

In order to achieve the above object, the composite yarn 60 for manufacturing safety protective clothing of the present invention manufactures the base fabric 50 for manufacturing safety protective clothing and then manufactures the composite fabric 100 for manufacturing safety protective clothing using the base fabric 50 for safety protective clothing manufacturing. For manufacturing protective clothing, it is manufactured through a compounding process of basalt fiber and aramid fiber or oxidized polyacrylonitrile fiber, and the composite yarn 60 for manufacturing safety protective clothing is aramid fiber or oxidized polyacrylonitrile fiber It is 20 to 70% by weight, basalt fiber is composed of 30 to 80% by weight, the aramid fiber is para-aramid fiber or meta-aramid fiber, and the composite process is preferably a covering process.

In addition, the covering process is preferably a double covering process in which the first covered yarn 80 and the second covered yarn 85 cover the core 70. In this case, the core 70 is a basalt fiber and the first covered yarn (80) and the second covering yarn 85 are aramid fibers or oxidized polyacrylonitrile fibers, and the number of twists of the first covering yarn 80 and the second covering yarn 85 is 150 to 800 during the double covering process. TPM, preferably, the first covered yarn 80 has Z twist, and the second covered yarn 85 has S twist, and the total fineness of the composite yarn 60 for manufacturing safety protective clothing is 1,000 to 3,000 denier is particularly preferred.

In addition, when manufacturing the base fabric 50 for manufacturing safety protective clothing according to the present invention, the composite yarn 60 for manufacturing safety protective clothing is woven with a warp, and the composite yarn 60 for manufacturing safety protective clothing and basalt fiber are used as weft yarns. Alternately arranged, the base fabric 50 for manufacturing safety protective clothing may be woven with any one of plain weave, varied plain weave, twill weave, varied twill weave and dobby weave, wherein the warp density is 10 to 30 yarns/inch, and the weft density is 10 to 50 bones/inch, the thickness is 0.5 to 1.5 mm, and the basis weight is preferably 200 to 500 g/m ² .

The composite yarn 60 for manufacturing safety protective clothing of the present invention has excellent flame retardancy and heat resistance, no deformation due to high heat or flame, and in particular, excellent shape stability and durability because there is no shrinkage or relaxation caused by heat. In addition, by including basalt fiber, which has excellent barrier properties against molten metal such as aluminum or iron and is inexpensive, it is possible to provide safety protective clothing with excellent price competitiveness. In addition, the safety protective clothing according to the present invention has excellent flame retardancy and heat resistance, and exhibits flexible and soft characteristics, thereby giving a worker high wearing comfort and activity.

1 is a structural diagram of a fabric composite 100 for manufacturing safety protective clothing,
2 is a schematic diagram of a plied yarn (a), a spun yarn (b), and a double covering yarn (c) manufactured through a compounding process;
3 is a photograph of a composite yarn (a) for manufacturing safety protective clothing and a base fabric (b) for manufacturing safety protective clothing woven using the composite yarn according to the present invention;
4 is a product picture of the safety protective clothing manufactured using the fabric composite 100 for manufacturing safety protective clothing manufactured according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms. It is provided to fully inform you. In addition, for convenience of description, the size of components may be exaggerated or reduced in the drawings. In the drawings, variations of the depicted shape may be expected, depending on, for example, manufacturing techniques and/or tolerances. Therefore, the present invention should not be construed as being limited to the specific shape of the region shown in this specification, but should include, for example, changes in shape caused by manufacturing.

Hereinafter, the composite yarn 60 for manufacturing safety protective clothing, the base fabric 50 for manufacturing safety protective clothing using the same, and the safety protective clothing of the present invention will be described in detail with reference to the drawings. 1 attached to the present invention is a structural diagram of a fabric composite 100 for manufacturing safety protective clothing, and FIG. 2 is a schematic diagram of ply-twisted yarn (a), spun yarn (b), and double covering yarn (c) manufactured through a compounding process. 3 is a photograph of a composite yarn (a) for manufacturing safety protective clothing according to the present invention and a base fabric (b) for manufacturing safety protective clothing woven using the same, and FIG. 4 is a fabric for manufacturing safety protective clothing manufactured according to the present invention. It is a product picture of the safety protective clothing manufactured using the composite 100.

In general, as shown in FIG. 1, the fabric composite 100 for manufacturing safety protective clothing basically has an aluminum-coated metal reflective layer 10 on the surface to reflect radiant heat, and also, radiant heat residual heat and flame And a protective film layer 20 is provided to block the metal melt. In addition, in order to finally block radiant heat and protect against molten metal, a base fabric 50 for manufacturing safety protective clothing having flame retardancy and blocking of molten metal is bonded using an adhesive layer 40.

Safety protective clothing according to the present invention can be manufactured as shown in FIG. 4 by sewing the fabric composite 100 for manufacturing safety protective clothing described above by a known method.

The composite yarn 60 for manufacturing safety protective clothing according to the present invention for manufacturing the protective clothing is a composite yarn using aramid fiber or oxidized polyacrylonitrile (hereinafter referred to as PAN) fiber and basalt fiber through a compounding process. characterized in that it is manufactured.

The aramid fiber is a synthetic polymer having 85% or more of amide group (-CONH-) bonds directly connected to two aromatic rings, and is largely divided into meta-aramid fibers and para-aramid fibers. The para-aramid fiber has a high tensile strength of 20 to 26 g / d and a tensile modulus of elasticity of 460 to 1,100 g / d, and the meta-aramid fiber has a low level of strength and modulus compared to polyester, but excellent heat resistance, It has flame retardancy and electrical insulation, and is widely used in high-temperature filtering materials, insulating paper, and protective clothing.

According to a preferred embodiment of the present invention, para-aramid fibers and meta-aramid fibers may be used as the aramid fibers when manufacturing the composite yarn 60 for manufacturing safety protective clothing, and when manufacturing safety protective clothing requiring super heat resistance and flame retardancy It is preferable to use meta aramid fibers for manufacturing, and to use para aramid fibers when manufacturing safety protective clothing requiring excellent tensile strength, elastic modulus, flame retardancy and heat resistance at the same time.

Oxidized PAN fibers are fibers obtained through a stabilization step during the manufacture of PAN-based carbon fibers. After preparing polyacrylonitrile (PAN) precursor fibers, the polyacrylonitrile precursor fibers are stretched in a temperature range of 200 to 300 °C It can be produced by peroxidation treatment.

In addition, basalt fiber contains 45 to 52% of silicon dioxide (SiO ₂ ), 12 to 16% of aluminum oxide (Al ₂ O ₃ ), 6 to 18% of iron oxide, 10 to 20% of alkaline earth metal, and 2% of alkali. As a fiber produced by melt-spinning basalt composed of ~ 8%, etc., it has excellent heat resistance and can be used at extremely low temperatures from -260 ℃ to 800 ℃. In addition, the price of the basalt fiber is about $ 20 / kg, which is characterized by a relatively very low price compared to aramid fiber.

The basalt fiber is a fiber obtained from natural basalt melt and can be produced at low cost because the basalt fiber is abundant in Korea. In addition, it is possible to fiberize raw ore in its natural state without pretreatment, and in particular, it has excellent adhesion to high-strength fibers and has incombustibility.

In general, safety protective clothing can be largely classified into industrial and firefighting. The industrial safety protective clothing is a safety protective clothing worn by workers in an extremely high temperature environment such as a furnace, and the fire safety protective clothing refers to a safety protective clothing for protecting workers who work in close proximity to high-temperature radiant heat.

The composite yarn 60 for manufacturing safety protective clothing according to the present invention is for manufacturing industrial safety protective clothing worn by workers in an ultra-high temperature environment such as the furnace, and is a compounding process using aramid fiber or oxidized PAN fiber and basalt fiber can be manufactured through

In this case, the composite process is preferably any one of a spinning process, a plied yarn process, and a covering process.

The spinning process consists of a process of unwinding the compressed-packed fibers and removing impurities, a carding process of making slivers, a drawing process of combining a plurality of slivers to improve the uniformity of slivers, and a roving process of making yarn. In addition, a spinning process of making the yarn thinner to maintain the desired thickness and strength of the yarn, and a winding process of winding the yarn into a skein or cone. Depending on the equipment used in the spinning process, it is divided into flyer spinning, ring spinning, and open-end spinning. In the spinning process according to the present invention, after cutting the fiber length to 30 ~ 55 mm, the carding process of removing impurities by breaking through it, the carding process of making an aggregate of infinitely long cotton, which is a sliver, and the uniformity by combining the slivers A spinning process to improve the spinning process and the spinning process of forming spun yarn from the sliver manufactured in the carding process at an air pressure of 0.50 to 0.60 MPa and a feed rate of 300 to 450 m/min; And through the winding process, the spun yarn as shown in (b) of FIG. 2 can be manufactured.

In addition, the ply-twisted yarn process is a process of twisting while combining two or more yarns, and can be performed using a two-for-one twisting machine or the like. In the present invention, the number of twists in the ply-twisted yarn process is 250 to 500 TPM (twist per meter), the heat setting temperature is 80 to 100 ° C, and the winding tension is preferably 30 to 35 N.

The heat setting is performed to suppress and stabilize the restoring force so that the yarn after the ply-twisted yarn is not untwisted. In the heat setting, the ply-twisted yarn shown in (a) of FIG. 2 can be manufactured by setting the inside of the setting machine in a vacuum state and applying steam at 80 to 100 ° C. for 60 minutes to complete the heat setting.

And as a compounding process, the covering process is a process of manufacturing the composite yarn 60 for manufacturing safety protective clothing with a structure in which the screening 70 is placed in the middle and the circumference is wrapped with covered yarn, and the composite yarn for manufacturing safety protective clothing manufactured through the covering process (60) has a structure in which the screening 70 is hidden and the coated yarn is exposed on the surface, so structural advantages such as elasticity and strength are realized by the screening 70, while functional properties such as texture, absorbency, dyeability, abrasion resistance, and antifouling property are realized. The characteristic can be exerted by the covering thread.

A single covering yarn covering the surface of the screening 70 using one covering yarn through the above covering process, and two covering yarns, that is, the first covering yarn 80 and the second covering yarn 80, as shown in FIG. 2(c). A double covering yarn covering the surface of the core 70 can be manufactured using the two covering yarns 85 .

In the present invention, the manufacturing process of the composite yarn 60 for manufacturing safety protective clothing manufactured through a composite process such as a spinning process, a plied yarn process, or a covering process as described above can be completed by winding it around a take-up roller.

According to the present invention, the composite yarn 60 for manufacturing safety protective clothing can be manufactured through a covering process, in which case the covering process includes the first covering yarn 80 and the second covering yarn as shown in FIG. 2(c). A double covering yarn produced by covering the surface of the screening 70 using 85 is particularly preferred.

That is, the double covering yarn manufactured by covering the surface of the core 70 using the first covered yarn 80 and the second covered yarn 85 as described above, the core 70 is made of basalt fiber, and the first The radiation 80 and the second covering yarn 85 are preferably made of aramid fibers or oxidized PAN fibers.

At this time, as shown in (c) of FIG. 2, it is preferable that the first covered yarn 80 has a Z twist and the second covered yarn 85 is made of a double covering yarn having an S twist.

The twist formed on the surface of the core 70 by the first covered yarn 80 and the second covered yarn 85 of the double covering yarn prepared as described above is preferably formed at 150 to 800 TPM (Twist per meter). do. If the twist formed by the first covering yarn 80 and the second covering yarn 85 on the surface of the double covering yarn is less than 150 TPM, the covering is not made firmly, and the composite yarn for manufacturing safety protective clothing ( 60) can be difficult to express. When the twist exceeds 800 TPM, a snail phenomenon occurs due to twisting of the composite yarn 60 for manufacturing safety protective clothing due to the high number of twists, so that the yarn protrudes to the surface of the woven fabric, resulting in the appearance of the fabric. this goes bad

In addition, excessive twist exceeding 800 TPM may be a factor in poor warp and weft weaving. Therefore, when the double covering yarn according to the present invention is compounded, it is particularly preferable that the twist formed on the surface of the core 70 by the first covered yarn 80 and the second covered yarn 85 is formed at 150 to 800 TPM.

The composite yarn 60 for manufacturing safety protective clothing manufactured through the above composite process is preferably manufactured by combining the aramid fiber or oxidized PAN fiber with the basalt fiber in terms of price competitiveness. In this case, the aramid fiber or oxidized PAN It is preferable to consist of 20 to 70% by weight of fiber and 30 to 80% by weight of basalt fiber.

When the composite yarn 60 for manufacturing safety protective clothing is manufactured with the above composition ratio, durability and flame retardancy of the composite yarn 60 for manufacturing safety protective clothing can be secured, and safety protective clothing having excellent price competitiveness can be manufactured.

That is, the basalt fiber is the cheapest fiber, and it is preferable to include 30 to 80% by weight in the manufacture of the composite yarn 60 for manufacturing safety protective clothing of the present invention. That is, when the basalt fiber is included at less than 30% by weight, the manufacturing price of the composite yarn 60 for manufacturing safety protective clothing increases, and when it exceeds 80% by weight, there is a concern that the wearing comfort of the manufactured safety protective clothing is reduced. there is. Since the basalt fiber is a material that is far superior to aramid fiber in terms of flame retardancy and heat resistance, when the basalt fiber is included in 30 to 80% by weight, the composite yarn 60 for manufacturing safety protective clothing of the present invention has excellent flame retardancy, heat resistance and metal It is possible to improve the price competitiveness while expressing the barrier property of the melt.

That is, the composite yarn 60 for manufacturing safety protective clothing of the present invention manufactured with the above composition ratio complies with KS M ISO 4589-2 (plastic - combustion behavior by oxygen index) when manufacturing the base fabric 50 for manufacturing safety protective clothing. Measurement - Part 2: Room temperature test method) by the test method (limiting oxygen index, hereinafter LIO) can be manufactured to 28 or more.

The total fineness of the composite yarn 60 for manufacturing safety protective clothing of the present invention manufactured as described above is preferably 10 to 30 when manufactured through a spinning process, and when composited through a ply-twisted yarn process or a covering process, It is preferably 1,000 to 3,000 denier.

That is, in the case of the composite yarn 60 for manufacturing safety protective clothing having a total fineness of 1,000 to 3,000 denier, the base fabric 50 for manufacturing safety protective clothing is flexible, and the safety protective clothing can be conveniently worn, It can be easily detached.

The composite yarn 60 for manufacturing safety protective clothing of the present invention prepared as described above is particularly preferably manufactured in the form of a double covering yarn as shown in (c) of FIG. It is manufactured as a base fabric 50 for manufacturing protective clothing. That is, the base fabric 50 for manufacturing safety protective clothing manufactured using the composite yarn 60 for manufacturing safety protective clothing of the present invention is preferably manufactured in the form of a fabric as shown in (b) of FIG. , in particular, it is most preferable to be woven in a twill weave so as to increase the density of the fabric.

When weaving the base fabric 50 for manufacturing safety protective clothing woven in the twill weave, the composite yarn 60 for manufacturing safety protective clothing is woven in a warp, and the composite yarn 60 for manufacturing safety protective clothing and basalt fiber are alternately woven as weft yarns. It is preferable to arrange

That is, when weaving the base fabric 50 for manufacturing safety protective clothing according to the present invention, the warp yarn 1 uses the composite yarn 60 for manufacturing safety protective clothing, and the composite yarn 60 for manufacturing safety protective clothing is used as the weft yarn. It is preferable to weave with any one of plain weave, changed plain weave, twill weave, changed twill weave, and dobby weave by alternately supplying and basalt fibers.

In addition, according to the present invention, when weaving the base fabric 50 for manufacturing the safety protective clothing, the warp density is 10 to 30 yarns/inch, and the weft density is particularly preferably 10 to 50 yarns/inch.

A fabric woven in a twill weave having the warp and warp yarn density as described above is flexible due to a small number of tissue points, and a thick and soft fabric can be obtained because the density can be increased. In addition, a large amount of basalt fiber included in the composite yarn 60 for manufacturing safety protective clothing is exposed on the surface, and aramid fiber or oxidized PAN fiber is exposed on the back surface. The basalt fiber has a heat resistance temperature of 900 ° C. or higher and prevents melt splashing from a furnace, etc., and the aramid fiber or oxidized PAN fiber blocks heat.

Therefore, in the case of the base fabric 50 for manufacturing safety protective clothing woven with twill having the warp and weft yarn density as described above, it is possible to manufacture a fabric composite 100 for manufacturing safety protective clothing that has excellent heat resistance and flame retardancy, and is especially soft and has excellent texture. do.

The thickness of the base fabric 50 for manufacturing safety protective clothing manufactured as described above is 0.5 to 1.5 mm, and the basis weight is preferably 200 to 500 g/m ² .

When the thickness of the base fabric 50 for manufacturing the safety protective clothing is 0.5 to 1.5 mm, the durability and flexibility of the manufactured safety protective clothing can be provided, and the tensile strength, tear strength, elasticity and resistance of the safety protective clothing chemistry can be further enhanced.

In addition, when the basis weight of the base fabric 50 for manufacturing the safety protective clothing is less than 200 g / m ² , a large number of fabrics must be laminated to perform the function of the safety protective clothing, so that the manufactured safety protective clothing becomes heavy. This occurs, and when the basis weight of the base fabric 50 for manufacturing the safety protective clothing exceeds 500 g/m ² , the safety protective clothing increases in thickness and becomes heavy, resulting in a decrease in activity of the operator.

When manufacturing safety protective clothing using the base fabric 50 for manufacturing safety protective clothing having a thickness and basis weight within the above ranges, a feeling of wearing is excellent, and radiant heat blocking and protection against molten metal may be the most excellent.

As shown in FIG. 1, the base fabric 50 for manufacturing safety protective clothing according to the present invention manufactured as described above has an aluminum-coated metal reflective layer 10 for reflecting radiant heat on the surface, and also, radiant heat residual heat And a protective film layer 20 is provided under the metal reflection layer to block flame and metal melt. The metal reflection layer 10 may be provided in plurality as shown in FIG. 1 in order to reflect radiant heat. In addition, in order to finally block radiant heat and protect against molten metal, the safety protective clothing according to the present invention is bonded to the base fabric 50 for manufacturing safety protective clothing having flame retardancy and metal melt blocking using an adhesive layer 40. A fabric composite 100 may be manufactured.

Safety protective clothing according to the present invention can be manufactured as shown in FIG. 4 by sewing the fabric composite 100 for manufacturing safety protective clothing described above by a known method.

Hereinafter, the present invention will be examined in more detail through examples. However, the present invention is not limited only to the following examples.

[Example 1]

Safety with a total fineness of 1,000 denier by using para-aramid fibers as the first covering yarn 80 and the second covering yarn 85 and using basalt fiber as the core 70 and applying 150 TPM twist through a double covering process. A composite yarn 60 for manufacturing protective clothing was manufactured. At this time, the composition ratio of the para-aramid fiber and the basalt fiber is 30:70% by weight, the first covered yarn 80 has Z twist, and the second covered yarn 85 has S twist and is double covered for safety protection. Composite yarn 60 for fabrication was manufactured. The composite yarn 60 for manufacturing safety protective clothing prepared as described above was used as a warp yarn, and basalt fiber was supplied as a weft yarn to prepare a plain weave fabric. At this time, the warp density of the fabric is 10 copies / inch, the weft density is 10 copies / inch, the thickness of the base fabric 50 for manufacturing safety protective clothing is 0.5 mm, and the basis weight is 200 g / m ² Weaved and used as a test piece did .

[Example 2]

A test piece was prepared under the same conditions as in Example 1, but the first covered yarn 80 and the second covered yarn 85 were woven using meta aramid fibers and then used as a test piece.

[Example 3]

Safety with a total fineness of 3,000 denier by using oxidized PAN fibers as the first covering yarn 80 and the second covering yarn 85, and using basalt fiber as the core 70 and applying 800 TPM twist through a double covering process. A composite yarn 60 for manufacturing protective clothing was manufactured. At this time, the composition ratio of the oxidized PAN fiber and the basalt fiber is 20:80% by weight, the first covering yarn 80 has a Z twist, and the second covering yarn 85 has an S twist to cover the protective clothing A composite yarn 60 for manufacturing was manufactured. The composite yarn 60 for manufacturing safety protective clothing prepared as described above was used as a warp yarn, and the composite yarn 60 for manufacturing safety protective clothing and basalt fiber were alternately supplied as weft yarns to manufacture a twill weave fabric. At this time, the warp density of the fabric is 30 copies / inch, the weft density is 50 copies / inch, the thickness of the base fabric 50 for manufacturing safety protective clothing is 1.5 mm, and the basis weight is 500 g / m ² Weaved and used as a test piece did .

[Example 4]

A test piece was prepared under the same conditions as in Example 3, but the first covered yarn 80 and the second covered yarn 85 were woven using meta aramid fibers and then used as a test piece.

In addition, the physical properties of the test pieces of Examples 1 to 4, that is, tensile strength, dimensional change rate, tear strength and burst strength, were evaluated in the following manner, and the results are shown in Table 1.

1) Tensile elongation

The tensile strength of the test pieces of Examples 1 to 4 was measured in accordance with ISO 13934-1 (Textile - Tensile properties of fabrics - Part 1 - Determination of maximum force and elongation at maximum force using the strip method).

2) Rate of dimensional change

The dimensional change rate of the test pieces of Examples 1 to 4 was measured in accordance with KS K ISO 5077 (textile - measurement of dimensional change by washing and drying).

3) Tear strength

The tear strength of the test pieces of Examples 1 to 4 was measured in accordance with KS K 0537 (Tear strength test method for fabrics).

4) Burst strength

The bursting strength of the test pieces of Examples 1 to 4 was measured in accordance with KS K ISO 13938-1 (Textile - Bursting property of fabric - Part 1: Hydraulic method for measuring bursting strength and bursting expansion).

tensile strength
(N) tensile elongation
(%) dimensional change rate
(%) tear strength
(N) burst strength
(kPa) slope weft slope weft slope weft Example 1 2,700 3,800 4.2 7.0 0.6 550 460 2,961 Example 2 2,685 3,842 4.8 7.6 0.6 562 465 2,966; Example 3 2,763 3,890 4.0 7.3 0.5 572 471 3,022 Example 4 2,798 3,902 4.6 7.0 0.7 575 477 3,043

Looking at Table 1, in the case of the test pieces of Examples 1 to 4 for the base fabric 50 for manufacturing safety protective clothing manufactured according to the present invention, the tensile strength measured in accordance with ISO 13934-1 is 2685 N in the warp direction to 2,798 N, and 3,800 N to 3,902 N in the weft direction. In addition, it can be seen that the tensile elongation is 4.0 to 4.8% in the warp direction and 7.0 to 7.6% in the weft direction.

In addition, the dimensional change rate measured according to KS K ISO 5077 is 0.5 to 0.7%, and the tear strength measured according to KS K 0537 is 550 to 575 N in the warp direction and 460 to 477 N in the weft direction. can be seen to indicate

And it can be seen that the bursting strength measured in accordance with KS K ISO 13938-1 represents 2,961 to 3,043 kPa.

In addition, the physical properties of the test pieces of Examples 1 to 4, that is, limit flame diffusion characteristics, molten aluminum resistance, molten iron resistance, flame heat transfer index and radiant heat transfer index, etc. were evaluated in the following manner, and the results are shown in Table 2 shown in

1) Characteristics of limiting flame diffusion

The limit flame spread characteristics of the test pieces of Examples 1 to 4 prepared as described above, that is, the after-flame time and the after-burn time, were measured according to ISO 15025 (Protective clothing - Protection against flame - Method of test for limited flame spread). That is, the flame retardancy was evaluated by measuring the limit flame diffusion characteristics by placing the test piece vertically and exposing it to a flame for 10 seconds for ignition on the surface to measure the after-flame time and after-burn time.

2) Flame heat transfer index and radiant heat transfer index

The flame heat transfer index of the test pieces of Examples 1 to 4 prepared as described above was conducted in accordance with KS K ISO 17492 (heat and flame blocking protective clothing - measurement of thermal transmittance when simultaneously exposed to flame and radiant heat), and the radiant heat transfer index was It was measured in accordance with KS K ISO 6942 (Protective clothing - Protection against heat and fire - Test method: Evaluation of materials and material components when exposed to radiant heat sources). At this time, the flame heat transfer index and the radiant heat transfer index measured the time required for the temperature to rise by 12 ° C, and the average value was used as data by performing the experiment three times.

3) Resistance of molten aluminum and resistance of molten iron

The molten aluminum resistance of the test piece prepared as described above was measured according to 7.4 of ISO 11612 (Standard for Protective Clothing to protect against Heat and Flame), and the molten iron resistance was measured according to 7.5 of ISO 11612.

Characteristics of limiting flame spread Molten aluminum
resistance (g) molten iron
resistance (g) flame fever
Delivery index (sec.) radiant heat
Delivery index (sec.) Afterburn time
(sec) remaining time
(sec) Example 1 0 0 undamaged undamaged 6.2 100.9 Example 2 0 0 Undamaged Undamaged 6.5 101.3 Example 3 0 0 Undamaged Undamaged 6.0 100.6 Example 4 0 0 Undamaged Undamaged 5.9 101.0

Looking at Table 2, in the case of the limit flame diffusion characteristics measured according to ISO 15025, both the after-flame time and the after-ash time are 0 seconds. .

In particular, the resistance of molten iron measured according to 7.5 of ISO 11612 and the resistance of molten aluminum measured according to 7.4 of ISO 11612 were all measured without damage in the test pieces of Examples 1 to 4.

In addition, it was measured that the flame heat transfer index measured according to KS K ISO 17492 was 5.9 to 6.5 seconds, and the radiant heat transfer index measured according to KS K ISO 6942 was 100.6 to 101.3 seconds. The standards for protective clothing in the United States and Europe consider the time required for the internal temperature of the protective clothing to rise by 12 ° C as important, which is the minimum time for a person wearing the protective clothing to take off the fire protection clothing without getting burned. indicates

As described above, the base fabric 50 for manufacturing safety protective clothing according to the present invention has excellent flame retardancy and heat resistance, almost no damage by high heat or molten metal, and almost no shrinkage and relaxation by direct and indirect heat. Therefore, it is possible to provide the composite yarn 60 for manufacturing safety protective clothing having excellent physical properties, shape stability and durability, and also, by including basalt fiber, it is possible to provide inexpensive safety protective clothing.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10: metal reflective layer
20: protective film layer
40: adhesive layer
50: base fabric for manufacturing safety protective clothing
60: composite yarn for manufacturing safety protective clothing
70: screening
80: 1st cloth yarn
85: 2nd cloth yarn
100: fabric composite for manufacturing safety protective clothing

Claims (8)

Composite yarn 60 for manufacturing safety protective clothing manufactured through a compounding process of basalt fiber and aramid fiber or oxidized polyacrylonitrile fiber.
The method of claim 1,
The composite yarn 60 for manufacturing safety protective clothing is composed of 30 to 80% by weight of basalt fiber and 20 to 70% by weight of aramid fiber or oxidized polyacrylonitrile fiber. .
The method of claim 1,
The aramid fiber is a composite yarn (60) for manufacturing safety protective clothing, characterized in that para-aramid fiber or meta-aramid fiber
The method of claim 1,
Composite yarn (60) for manufacturing safety protective clothing, characterized in that the total fineness of the composite yarn (60) for manufacturing safety protective clothing is 1,000 to 3,000 denier
A base fabric (50) for manufacturing safety protective clothing manufactured using the composite yarn (60) for manufacturing safety protective clothing according to any one of claims 1 to 4.
The method of claim 5,
The base fabric 50 for manufacturing safety protective clothing is woven with any one of plain weave, varied plain weave, twill weave, varied twill weave and dobby weave.
A fabric composite 100 for manufacturing safety protective clothing manufactured using the base fabric 50 for manufacturing safety protective clothing of claim 6.
Safety protective clothing manufactured using the fabric composite 100 for manufacturing safety protective clothing of claim 7.

Images