KR20190099926A - fire protective suitand method for producing the same - Google Patents

Abstract

A firefighter protective clothing according to the present invention is excellent in high heat resistance, chemical resistance, and durability, thereby being able to protect the body for a long time from a harsh environment such as high temperature, toxic gas and the like, and having excellent lightweightness, stretchability, touch and the like to have an effect of significantly improve activity.

Description

Fire protective suit and method for producing the same

The present invention relates to a fire protection suit and a method of manufacturing the same.

There is a growing public interest in the safety of firefighters, including reports of the firefighters' victims who are exposed to dangerous environments while working at the fire site. In order to ensure the safety of firefighters and to understand the characteristics of burns and accompanying damage occurring at the fire site, scientific analysis of the protective functions of protective equipment, including fire fighting clothing, is required. Therefore, the importance of the firefighting suit function is very important, it is necessary to develop a multi-functional firefighting suit that can protect the safety of the human body exposed to fire.

In general, fire protection suits have the property of protecting the operator's body from strong heat from fire or water vapor continuously from the hose and chemicals harmful to the human body.

However, conventional fire protection suits are difficult to continuously protect the human body from high temperatures during firefighting, and because of their limited activity due to lack of stretch and lightness, fire suppression and relief activities due to fatigue, stress accumulation and exhaustion, etc. There was a problem that the duration for the significantly reduced. In addition, these fire protection suits are unable to properly extinguish the fire due to the lack of heat resistance in the flames during a fire, and are not durable and can be easily torn if a sharp object is caught on the outer surface, thus preventing the human body from toxic gases and high temperatures. There was.

Recently developed high-performance fire fighting suits are made of aramid yarn and polyurethane yarn to express elasticity, but there is a problem that cyanide gas is detected from fire suit due to combustion by high temperature. Difficult to use because it causes fatal toxicity to the human body has been found.

Therefore, the most important function of fire protective clothing is the characteristics of high heat resistance and chemical resistance for the life protection of the wearer. However, in the case of the conventional firefighting suit, it is still not well known at high temperatures due to poor heat resistance, it is impossible to suppress the fire properly in the flame. Therefore, it is required to develop a fire protection suit that is excellent in heat resistance, light weight, stretch, touch and durability to efficiently relieve victims at high temperatures. If the fire protection protective clothing has excellent characteristics such as light weight, stretch, and feel, the wearer can effectively perform fire suppression and victim relief as the characteristics such as activity, quickness and agility are significantly increased.

Accordingly, there is a need to develop a fire protection suit having high heat resistance as well as protecting the body from heat and toxic gases such as high heat resistance, chemical resistance, durability, light weight, stretch resistance, and touch.

Korea Patent Publication No. 10-1614875 (2016.04.18) Korea Patent Publication No. 10-1614873 (2016.04.18.)

An object of the present invention is characterized by high heat resistance, chemical resistance, durability that can be suppressed early in the fire during fire suppression, protect their lives in the flame and rescue escape and victims faster It is to provide a fire protection suit and a method of manufacturing the same, which has a high functional characteristic and can protect the body continuously for a long time from a harsh environment such as high temperature and toxic gas.

Another object of the present invention is to provide a fire protection protective clothing and a method for manufacturing the same, which can protect the body from a harsh environment for a long time and have excellent properties such as light weight, stretch, and feel, thereby significantly improving activity.

The production method of the fire protection protective clothing according to the present invention is a rayon-based carbon fiber that does not burn even at a high temperature of more than 2800 ℃, the elastic woven carbon fiber is applied to the rayon-based carbon material is applied through a step of applying elasticity It is excellent in touch through the refining and bleaching steps, and has the effect of expressing excellent colors through the dyeing step.

Method for producing a fire protection protective clothing according to the present invention is a) a step of heat-setting after the elasticity and twist to the rayon-based carbon fiber, or heat-fixing after applying the rayon-based carbon fiber, b) the elasticity and elasticity Weaving the applied rayon-based carbon fibers to produce a fabric, c) refining and bleaching the fabric to the touch and d) heat-resistant capable of expressing color on the fiber surface of the refined and bleached fabric Coating the composition.

In one example of the present invention, the step a) is a twist of the ray-based carbon fiber twisted to 1,000 to 2,000 T / M, and then heat-setting to ensure that the firm elasticity and elasticity of the fabric, the flame can be prevented from entering It may be a step of applying elasticity, elasticity, fabric high density, etc. to the rayon-based carbon fiber which is a basic method for expressing high-density tissue.

In one embodiment of the present invention, the step a) is heat-fixed after entangled so that the number of interlacing carbon fiber yarns 10 to 30 / in order to give the rayon-based carbon fibers to reduce the defect rate and elasticity when we focus and weaving The rayon-based carbon fiber may be a step of applying yarn concentration, loom yield improvement, elasticity, and the like.

In one embodiment of the present invention, the step a) is a twist of the ray-based carbon fiber twisted to give a twist of 1,000 to 2,000 T / M, and then after the heat setting, after entangled to 10 to 30 / in It may be a step of applying the elasticity, elasticity, high density, focusing, weaving yield improvement, etc. to the rayon-based carbon fiber.

In one example of the present invention, the heat setting of step a) may be performed by applying a steam pressure of 80 to 120 ℃ to give twist and fabric morphological stability to the rayon-based carbon fiber.

In one embodiment of the present invention, step b) may be a step of producing a fabric so that the surface density is 400 g / m ² or less so that the flame can not contact the body in the flame.

In one embodiment of the present invention, step c) may be a step of refining and bleaching the fabric by contacting with 1 to 10% by weight aqueous sodium hydroxide solution.

In one example of the present invention, the heat resistant composition of step d) may include a heat resistant pigment, a heat resistant binder and a solvent. In this case, the heat resistant pigment is an oxide or a complex of oxides including any one or two selected from nickel oxide, antimony oxide, titanium dioxide, bismuth oxide, vanadium oxide, krum oxide, iron oxide, aluminum oxide, manganese oxide, copper oxide, and the like. Can be used. More preferably, the heat resistant composition may be a complex metal oxide in which the high heat resistant metal oxide is mixed or combined.

In one embodiment of the present invention, the heat resistant binder may be a binder such as epoxy resin, urethane resin. The solvent is not particularly limited but may be preferably coated with a heat resistant pigment according to the present invention by dispersing the composition in water and coating it onto a fabric.

In one embodiment of the present invention, the heat resistant composition may include 50 parts by weight to 300 parts by weight of the heat resistant pigment and 30 to 100 parts by weight of the heat resistant binder with respect to 100 parts by weight of the solvent.

In one example of the present invention, the average thickness of the coating layer formed on the fabric of the fabric in step d) may be 0.1 to 0.5 mm.

The method of manufacturing a fire protection suit according to an embodiment of the present invention may further include stabilizing by heat treatment at 130 to 170 ° C. after step d).

Fire protective clothing according to the present invention is excellent in high heat resistance, chemical resistance, durability has the effect of long-term continuous protection of the body from the harsh environment such as high temperature, toxic gas.

Fire protection clothing according to the present invention is able to continuously protect the body from the harsh environment for a long time, and excellent in the properties such as light weight, stretch, and feel, there is an effect that the activity is significantly improved.

Even if the effects are not explicitly mentioned in the present invention, the effects described in the specification and the inherent effects expected by the technical features of the present invention are treated as described in the specification of the present invention.

1 is a view showing a dispensing apparatus used in the method for manufacturing fire protection clothing according to an embodiment of the present invention.
2 is a view showing a toilet value used in the method for manufacturing fire protection suit according to an embodiment of the present invention.
3 is a view showing a winding device used in the method for manufacturing fire protection suit according to an embodiment of the present invention.
4 is a view showing the device for the coating used in the method for manufacturing a fire protection protective clothing according to an embodiment of the present invention.
5 is a final process schematic diagram of a method for manufacturing a fire protection protective clothing according to an embodiment of the present invention.

Hereinafter, a fire protection suit and a method of manufacturing the same according to the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings described herein are provided by way of example in order to fully convey the spirit of the invention to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented and may be embodied in other forms.

Method for manufacturing a fire protection protective clothing according to the present invention, a) by applying a twist to the rayon (Rayon) carbon fiber (Twist), or heat-setting, or after heat-lacing the rayon-based carbon fiber (Interace) to apply elasticity Step, b) weaving the elastically applied rayon-based carbon fiber to produce a fabric, c) refining and bleaching the fabric and d) coating the heat-resistant composition on the fiber surface of the refined and bleached fabric Steps.

Conventionally, aramid, polybenzimidazole (PBI), polybenzoxazole (PBO), and the like have been used as yarns used in fire protection suits, but fire protection suits made of these yarns have been used. Its low heat resistance makes it easy to burn even at about 800 ° C, and it is practically impossible to protect the human body from the harsh environment of high temperature of 2,000 ° C or more. In addition, the rayon-based carbon fiber is excellent in rigidity and lack of stretch, it has been practically impossible to use as a fire protective clothing that requires agility.

However, in the present invention, the rayon-based carbon fiber is used as a yarn for the fabric used in fire protection clothing, and has high heat resistance that can withstand high temperatures of 2,000 ° C. or higher, and at the same time, a decrease in stretch property and lightness, which are disadvantages of the rayon-based carbon fiber. And the problem of lowering agility was solved by sequentially going through steps a) and steps b) to d) described later.

That is, in the manufacturing method of the fire protection protective clothing according to the present invention, the present invention through the process of applying the elasticity of the step a), specifically the step of applying heat by heat setting after twisting or entangled, the present invention is heat and stretch resistance Provide this significantly increased fire protection suit

Specifically, step a) is a-1) step of heat fixation after twisting the rayon-based carbon fiber, a-2) step of heat fixation after twisting the rayon-based carbon fiber or after twisting the rayon-based carbon fiber After the heat setting, the heat-fixed rayon-based carbon fibers may be selected from the a-3) step of heat-setting after entangled. When step a) is step a-1), it may be relatively excellent in terms of process efficiency and cost, and when step a) is step a-2), higher elasticity may be applied to the rayon-based carbon fiber. In addition, when the step a) is a-3), not only higher elasticity is applied to the rayon-based carbon fibers, but also higher elasticity may be maintained for a long time.

When step a) is step a-1) or step a-3), when twisting the rayon-based carbon fiber, the number of twists is not particularly limited, but the number of twists is 1,000 to 2,000 T / M. It may be desirable. If it satisfies this, excellent stretch property is provided, and high elasticity can be continuously maintained in the rayon-based carbon fiber after heat setting.

When step a) is step a-2) or step a-3), the optimal condition for expressing the rayon-based carbon fiber effect is given excellent stretchability when the number of entanglement is 10 to 30 / in, High elasticity can be applied.

When step a) is step a-2) or step a-3), when interlacing the rayon-based carbon fiber, the gap is not particularly limited, but it is preferable that the gap is 1 to 2.5 cm. Can be. If it satisfies this, excellent stretch property is provided, and high elasticity may be applied to the rayon-based carbon fiber.

As a specific example, the step a) is a twist of the ray-based carbon fiber to give a twist of 1,000 to 2,000 T / M, and then heat-set, after the entanglement so that the number of entanglement 10 to 30 / in It may be a step of applying elasticity to the fiber. If it satisfies this, excellent stretch is provided, and not only the high elasticity of the rayon-based carbon fiber can be continuously maintained after heat setting, but also the lightness can be significantly increased.

The heat setting of step a) is not particularly limited, but preferably, the rayon-based carbon fiber is heat-set by a wet method, specifically, a steam method using steam. As a preferred example, the heat setting is preferably performed by applying a steam pressure of 80 to 120 ℃ to the rayon-based carbon fiber. If it satisfies this, high oil absorption and absorbency is given to the rayon-based carbon fibers, after which the heat-resistant composition of the composition described below can be effectively penetrated and coated on the fibers of the fabric woven with rayon-based carbon fibers in step d). In addition, it is possible to prevent the problem that the diameter is difficult due to the tension during the dissolution of the rayon-based carbon fiber twist applied in step a). Thus, it is possible to provide a fire protection suit with significantly increased heat resistance, durability, and chemical resistance.

In addition, the heat setting is performed after the twisting or entanglement process in step a), thereby giving a soft bulky touch, not breaking or yellowing, and then improving uniformity and yield in coating the heat-resistant composition in step d). Effects such as wrinkle reduction are realized.

In the step a), the rayon-based carbon fiber may be used as a single yarn, but may be used a plywood or tri-plyed yarn in which two or more rayon-based carbon fibers are plyed. When the rayon-based carbon fiber of step a) is one of plywood or three plywood, heat resistance and durability may be further improved.

In the step a), the twisting process, the entanglement process, the heat-setting process technology for the existing yarn is to give a twist to the weaving yarn was developed, and the present invention is rayon-based carbon fiber has excellent bonding force between yarns In the following, the densification technique is possible, and the density can be freely adjusted during weaving, and the three techniques such as the entanglement treatment technique, the twisting technique, and the heat setting technique can exhibit characteristics when satisfied.

Step b) is a step of producing a fabric by weaving the rayon-based carbon fiber is applied elasticity. The rayon-based carbon fiber can be woven into a three-dimensional structure, such as change weaving, twill weave, runner weave, and if this is satisfied, the wear resistance and strength can be further improved with the improvement of the stretch.

In a preferred embodiment, step b) may be a step of producing a fabric so that the surface density is 400 g / m ² or less. When the fabric is manufactured by weaving rayon-based carbon fibers elastically applied so that the surface density is 400 g / m ² or less, specifically 100 to 400 g / m ² , it has high heat resistance and stretch resistance and high weight Provide fire protection clothing with gender and agility.

In a preferred embodiment, in the step b) is a means for producing a fabric so that the surface density is 400 g / m ² or less, specifically 100 to 400 g / m ² , step b) is 6,400 to 9,200 It may be a step of making a fabric to be a pattern. If it satisfies this, it is possible to provide a fire protection clothing that is excellent in light weight and agility while improving the heat resistance, stretch resistance and wearing comfort by satisfying the above-described surface density.

When weaving in step b), a dispensing device, a toilet, a winding device may be used. The rayon-based carbon fiber is elastically applied in the above-described method, unlike conventional fibers, due to the difficulty of weaving with conventional rapier looms, it may be preferable to use a dispensing device, a yarn changing device and a winding device in the following method. have. Specifically, as shown in FIG. 1, the dispensing apparatus may be controlled and used so that the rotation speed is 15 to 20 m / min, and the change-up gear may be mounted to facilitate control. As shown in FIG. 2, the tension is controlled to be 5 to 15 g / Denier in the tension adjusting device of the toilet, so that the rotation speed may be reduced to within 2 to 4 g / Denier. . As shown in FIG. 3, when the fabric is wound, a tension of 8 to 16 g / denier may be applied and wound up as the winding tension control unit is attached to the winding device, and thus the winding speed may be reduced by 20% more than before. Can be.

Step c) is a step of refining and bleaching so that the heat-resistant composition of step d) can be effectively penetrated and coated on the fibers of the fabric woven in step b). Specifically, step c) may be a step of scouring and bleaching the fabric by dipping in an aqueous sodium hydroxide solution. At this time, various apparatuses can be used, for example, a relax continuous refiner can be used. As a result of the refining and bleaching steps, impurities such as carbon particles adhered to the surface of the fiber are removed, so that the heat-resistant composition can effectively penetrate and coat the fiber in step d). In addition, it is possible to secure high weight by reducing the shape stability of the fabric and the density during weaving. As well as the coating in step d), it is possible to give the fabric a uniform color and good adhesion, high stretch and elasticity.

The concentration of the aqueous sodium hydroxide solution is not particularly limited, and may be, for example, 1 to 10% by weight of sodium hydroxide based on 100 parts by weight of water. Temperature of the refining and bleaching step c), specifically, when refining and bleaching using an aqueous sodium hydroxide solution, the temperature of the sodium hydroxide aqueous solution is not significantly limited, for example, it is 70 to 120 ℃ can more effectively remove impurities It may be desirable. The refining and bleaching time is not significantly limited, for example 5 to 40 minutes, in one embodiment 20 minutes.

Step d) is a step of coating the heat resistant composition on the fibers of the refined and bleached fabric. In this case, the heat resistant composition may include a heat resistant pigment, a heat resistant binder, and a solvent.

Specifically, the heat resistant pigment may include an oxide of a metal including any one or two or more selected from chromium, antimony, titanium, nickel, copper, iron, bismuth, vanadium, cobalt, zinc, aluminum, and manganese. . That is, the heat-resistant pigment is an oxide or oxide of any one or two selected from nickel oxide, antimony oxide, titanium dioxide, bismuth oxide, vanadium oxide, krum oxide, iron oxide, aluminum oxide, manganese oxide and copper oxide, etc. Complexes can be used. More preferably, the heat resistant composition may be a complex metal oxide in which the high heat resistant metal oxide is mixed or combined.

In the case of using such a heat resistant pigment, oil absorption, light resistance, chemical resistance, heat resistance and the like may be preferable. Specific examples thereof include Yellow 501, Yellow 502, Yellow 503, Yellow 504, Yellow 505, Blue 601, Green 701, Brown 801, Brown 802, Black 901, Black 902, etc. of Hyundai Chemical Company.

The heat resistant binder may include any one or two or more selected from epoxy resins, silicone resins, urethane resins, and the like. The epoxy resin and the silicone resin may be used as commonly used, for example, the silicone resin may include polydimethylsiloxane and the like. As a non-limiting example, the epoxy resin may include RIKARESIN HBE-100, RIKARESIN DME-100, RIKARESIN L-100, RIKARESIN BPO-20E, RIKARESIN BPO-60E, and the like. As a non-limiting example, the urethane resin may include PUD-5001 of Aekyung Chemical Co., Ltd. The weight average molecular weight of such a resin may have the value of what is normally used, for example, 1,000-100,000 g / mol can be mentioned.

The solvent may be water or an ionic liquid, and examples of the ionic liquid include N-ethyl-N-methylpiperidinium bis (trifluoromethanesulfonyl) imide (PP12 TFSI) and N-ethyl-N, N-dimethyl-N-methoxymethylammonium bis (trifluoromethanesulfonyl) imide (N112.101 TFSI) and the like can be used. When a fabric coated with a heat-resistant composition comprising the heat-resistant pigment, heat-resistant binder and solvent described above is used, it is possible to provide a fire protection suit that can withstand a long time even at a high temperature of about 2,800 ° C or more.

When the heat-resistant pigment is included in the heat-resistant composition is coated on the fiber of the fabric, there is an excellent effect of heat resistance, strength resistance, solvent resistance, chemical resistance that does not change color in the flame even at a high temperature of more than 1,300 ℃. Since the color of the pigment may be determined according to the type of the metal oxide of the metal oxide and combinations thereof, the upper heat-resistant pigment may be appropriately adjusted to set the required color.

When the heat resistant binder is included in the heat resistant composition and coated on the fiber of the fabric, the adhesion between the fiber phase of the fabric and the pigment is significantly improved, and there is an effect of maintaining the adhesion without modification even at high temperatures. Fabrics woven with rayon-based carbon fibers have low affinity for heat-resistant pigments. However, general binders do not have good adhesion between the fabrics and pigments. However, when the heat-resistant binders are used, they have excellent heat resistance and high electron mobility. Excellent heat dissipation and antistatic effect, there is an effect that the crack does not occur even in a high temperature environment for a long time.

As the solvent, water may be used, and even when an ionic liquid is used, the toxicity is relatively low and environmentally friendly, and has high heat resistance to maintain a liquid state even at high temperatures, and thus can dissolve the material well above the organic solvent. The fibrous binding reaction of the heat resistant pigment by the binder can be effectively carried out with high efficiency. In particular, when the ionic liquid is used, the ionic liquid penetrates and diffuses into the fabric, so that the low elasticity and high wrinkle properties peculiar to rayon-based carbon fibers are significantly reduced, thereby significantly improving soft characteristics.

The heat resistant composition is not particularly limited in its composition ratio, but for example, in the example of the present invention, the heat resistant composition may be used in an amount of 50 parts by weight to 300 parts by weight of the heat resistant pigment and 100 parts by weight of the heat resistant binder with respect to 100 parts by weight of the solvent. It may include 30 to 100 parts by weight. When the heat resistant composition is included, the heat resistant composition can be more significantly adsorbed and penetrated onto the fiber. In addition, when the heat-resistant composition includes the heat-resistant binder content based on 100 parts by weight of the solvent, the adhesion between the fiber and the heat-resistant pigment may be improved, the strength may be further improved, and the heat-resistant properties by the heat-resistant pigment may be significantly improved. Can be.

Although the average thickness of the coating layer formed on the fibers of the fabric in step d) is not limited significantly, for example, it may be desirable to satisfy 0.1 to 0.5 mm. If it satisfies this, as well as having excellent heat resistance, it is possible to minimize the problem, such as peeling of the heat-resistant pigment coated on the fiber by physical force can be improved more durable.

The coating method of step d) may use any of a variety of known methods as long as it is a method of coating the heat-resistant composition on the fibers. For example, a wet method, an immersion method, a knife coating method, a roller-to-roller method, and the like may be used. It may be more preferable to use the roller-to-roller method shown in FIG. When using the roller-to-roller method, a guide gauge may be installed so that the color may be uniformly expressed so that the tension is 5 to 10 g / denier so as to coat the heat-resistant composition on the fiber.

The method of manufacturing a fire protection suit according to an embodiment of the present invention may further include, after step d), e) stabilizing by heat-treating the coating layer coated on the fabric. For the heat treatment, it may be preferable to use a thermal spraying tender method or an ion beam irradiation method. When stabilizing the pigment-coated fabric through a thermal spraying method or an ion beam irradiation method in step e), there is an effect that can maintain a high adhesion even in a high temperature environment, such as in the environment of fire. In particular, when stabilized through the ion beam irradiation method, the effect of maintaining the adhesion in a high temperature environment can be significantly improved.

When using the thermal spray tender method in step e), the temperature may be 130 to 170 ℃. In this case, the time may be sufficiently dry, for example, 0.1 to 5 minutes.

When using the ion beam irradiation method in step e), the temperature may be 90 to 150 ℃, as an example may be 120 ℃. At this time, the time may be enough to dry enough, for example, 0.1 to 20 seconds, in one embodiment may be 5 seconds.

The method of manufacturing a fire protection suit according to an embodiment of the present invention may further include forming a water repellent layer by applying a water repellent composition on a coating layer formed on the fabric after the step d) or the e). have. The water repellent may be a compound having various known water repellent properties, for example, any one selected from polysiloxane, polydimethylsiloxane, oligosiloxane, methylphenyl polysiloxane, methoxysilane, ethoxysilane, propoxysilane and isopropoxysilane, etc. Or it may be preferable to use a silicone-based water repellent compound containing two or more. The use amount of the water repellent composition is not particularly limited, for example, the water repellent composition may be used in 50 to 500 parts by weight based on 100 parts by weight of the solvent used to form the coating layer.

The method of manufacturing a fire protection suit according to an embodiment of the present invention may further include a post-processing step after step d) or step e). The post-processing step may illustrate a method of coating various resins, and in this case, a pattern, a pattern, and the like may be printed. In addition, the pre-coating process may be further performed so that transfer of a pattern, a pattern, and the like is performed well before.

Claims (13)

a) applying heat to the rayon-based carbon fiber after twisting or heat-setting the rayon-based carbon fiber
b) manufacturing the fabric by weaving the rayon-based carbon fiber to which the elasticity is applied
c) refining and bleaching the fabric, and
d) coating the heat resistant composition on the fiber surface of the refined and bleached fabrics
Manufacturing method of fire protection clothing comprising a. The method of claim 1,
Wherein the step a) is a step of twisting the rayon-based carbon fiber to give a twist of 1,000 to 2,000 T / M and then heat-set to apply the elasticity to the rayon-based carbon fiber manufacturing method of fire protection clothing. The method of claim 1,
Wherein the step a) is a step of applying the elasticity to the rayon-based carbon fiber after entangled so that the number of entanglement of the rayon-based carbon fiber 10 to 30 / in. The method of claim 1,
In step a), the twist of the rayon-based carbon fiber is twisted to give 1,000 to 2,000 T / M, and then the heat setting is performed. The manufacturing method of the fire protection suit which is an authorization stage. The method of claim 1,
The heat setting of the step a) is a method of manufacturing a fire protective clothing is carried out by applying a steam pressure of 80 to 120 ℃ to the rayon-based carbon fiber. The method of claim 1,
B) step is to prepare a fabric so that the surface density is 400 g / m ² or less manufacturing method of fire protective clothing. The method of claim 1,
The step b) is the manufacturing method of the fire protection clothing, the step of manufacturing the fabric so that the total number of inclination 6,400 to 9,200 copies. The method of claim 1,
The step c) is the step of scouring and bleaching the fabric by contacting the aqueous solution of 1 to 10% by weight of sodium hydroxide. The method of claim 1,
The heat resistant composition comprises a heat resistant pigment, a heat resistant binder and a solvent,
The heat-resistant binder is a manufacturing method of fire protection clothing comprising at least one selected from epoxy resin and urethane resin. The method of claim 9,
The heat-resistant composition is 50 to 300 parts by weight of the heat-resistant pigment and 30 to 100 parts by weight of the heat-resistant binder with respect to 100 parts by weight of the solvent. The method of claim 10,
Method for producing a fire protective clothing of the average thickness of the coating layer formed on the fiber of the fabric in step d). The method of claim 1,
The manufacturing method of the fire protection suit,
After the step d), e) heat treatment to stabilize the manufacturing method of the fire protection suit further comprising. Fire protection suit manufactured by the manufacturing method of the fire protection suit of any one of Claims 1-12.

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