KR-20260062270-A - Smothering extinguishment sheet with Oxy-PAN based carbon fiber

KR20260062270AKR 20260062270 AKR20260062270 AKR 20260062270AKR-20260062270-A

Abstract

The suffocation fire extinguishing cloth comprising oxyphen-based carbon fibers according to the present invention is characterized by comprising: a precursor preparation step of preparing a precursor (PAN-based); an oxidation step of manufacturing an oxidized fiber by oxidizing the precursor while transporting it; a carbonization step of manufacturing an oxyphen-based carbon fiber by heating the oxidized fiber (1000℃); a surface treatment step of increasing chemical adhesion by roughening the surface of the oxyphen-based carbon fibers; and a weaving step of weaving the oxyphen-based carbon fibers, thereby producing an Oxy-PAN-based flame retardant layer, and an insulating layer provided on the outer side of the Oxy-PAN-based flame retardant layer.

Inventors

박철현
김늘새롬
강경모

Assignees

주식회사 라지

Dates

Publication Date: 20260507
Application Date: 20241028

Claims (7)

A precursor preparation step for preparing a precursor (PAN-based), and An oxidation step for manufacturing oxidized fibers by oxidizing while transporting a precursor, and A carbonization step of manufacturing oxyphen-based carbon fibers by heating oxide fibers (1000℃), and A surface treatment step that roughens the surface of oxyphen-based carbon fibers to increase chemical adhesion, and An Oxy-PAN-based flame retardant layer manufactured by sequentially performing weaving steps to weave oxyphen-based carbon fibers, and A suffocation extinguishing cloth comprising oxyphen-based carbon fibers, characterized by being composed of an insulating layer provided on the outer side of the above-mentioned oxy-PAN-based flame retardant layer.
A suffocating fire extinguishing cloth comprising an oxyphen-based carbon fiber, characterized in that, in claim 1, the precursor is acrylonitrile.
A suffocating fire extinguisher comprising oxyphen-based carbon fibers, characterized in that, in claim 2, the oxidation step is a process of heating a precursor within the range of 200 to 300°C.
A suffocating fire extinguisher comprising oxyphen-based carbon fibers, characterized in that, in claim 3, the carbonization step is a process of heating the oxidized fibers at a temperature of 1000℃ or lower.
A suffocating fire extinguisher comprising oxyphen-based carbon fibers, characterized in that, in claim 4, the insulating layer is made of silica ( SiO2 ).
A suffocating fire extinguishing cloth comprising oxyphen-based carbon fibers, characterized in that, in claim 5, the insulating layer is formed by applying liquid silica to the outer surface of an oxy-PAN-based flame retardant layer and then curing it.
In claim 6, the surface treatment step is, A suffocation extinguishing cloth comprising oxyphen-based carbon fibers characterized by a process of oxidizing carbonized fibers to roughen the surface.

Description

Smothering extinguishment sheet with Oxy-PAN based carbon fiber The present invention relates to a suffocation fire extinguishing cloth comprising oxyphen-based carbon fibers, which is easy to store and transport, and enables the extinguishing of a fire with only a simple process of covering a burning vehicle. The present invention relates to a suffocation extinguishing cloth comprising oxyphen-based carbon fibers that can improve ease of use by increasing flexibility without undergoing a graphitization process to increase carbon content. The present invention relates to a suffocation fire extinguishing cloth comprising oxyphen-based carbon fibers that can improve fire extinguishing performance by minimizing edge lifting when covering a fire extinguishing object due to flexibility, thereby increasing the air ingress blocking performance. The present invention relates to a suffocation extinguishing cloth comprising oxyphen-based carbon fibers that can improve heat resistance by not having conductivity, by controlling the carbon content through oxidation and carbonization processes, etc., of a polymer (PAN: Poly-Acrylinitrile) produced by applying heat and pressure to acrylonitrile. The present invention relates to a suffocation extinguishing cloth comprising oxyphen-based carbon fibers that have low thermal conductivity and high thermal insulation properties by avoiding a graphitization process so as not to increase the carbon content. Recently, as the demand for portable electronic products such as laptops and mobile phones has increased rapidly and the development of energy storage batteries, robots, and satellites has accelerated, research on high-performance secondary batteries capable of repeated charging and discharging is underway. Currently commercialized secondary batteries include nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries. Among these, lithium secondary batteries are gaining attention for their advantages, such as the fact that they can be freely charged and discharged with almost no memory effect compared to nickel-based secondary batteries, a very low self-discharge rate, and high energy density. Furthermore, as carbon energy is gradually depleting and concern for the environment grows, the world is focusing on the development of hybrid and electric vehicles. As such, the most critical component of hybrid or electric vehicles is the vehicle battery, which provides driving power to the vehicle motor. Meanwhile, one of the major social issues regarding batteries is the problem of battery safety. Ensuring battery safety is recognized as a critical issue, as battery explosions or fires can not only cause damage to the devices in which they are installed but also lead to additional fires. In particular, medium-to-large batteries used in hybrid or electric vehicles require a higher level of safety than small batteries used in general portable electronic devices. This is because medium-to-large batteries generate high voltage, which can inherently produce a significant amount of heat. Furthermore, in the case of vehicle batteries, a fire may occur if the battery pack operates excessively while exposed to high temperatures during the sweltering summer, or if a major impact is transmitted to the battery due to an accident such as a vehicle collision, causing the protection function to fail to operate properly or resulting in an internal short circuit. Accordingly, Korean registered patent No. 10-1937291 discloses a fire detection and extinguishing system for a tunnel, comprising fire detection sensors at regular intervals inside a tunnel (10) as shown in FIG. 1, a rail (200) in the longitudinal direction of the tunnel on the ceiling of the tunnel, a fire extinguishing body (300) including a storage tank in which fire extinguishing liquid or water is stored inside and a driving unit that moves along the rail, and a non-combustible cover means (400) that is detachably coupled to the lower part of the fire extinguishing body and has a weight at the edge. However, the conventional technology of Fig. 1 requires significant construction costs and has the problem of being inconvenient for maintenance and management. In addition, the non-combustible cover means (400) has a problem in that it is difficult to drop accurately at the point of fire occurrence, and in the event that a fire occurs in the vehicle battery and a thermal runaway phenomenon is caused, it cannot completely cut off the oxygen supply, making it practically impossible to extinguish the fire. Meanwhile, Korean published patent No. 10-2013-0028023 discloses a battery pack fire suppression device capable of quickly suppressing a fire when a fire occurs in the battery pack or when a risk of fire is detected, as shown in FIG. 2. However, the above-mentioned conventional technology requires the installation of fire detection sensors, fire extinguishing agent storage tanks, etc. inside t