KR20200075441A - Meltblown nonwoven fabric material for removing harmful chemicals and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a melt-blown nonwoven fiber material for removing harmful chemicals and a method for manufacturing the same. In more detail, the method of manufacturing a melt-blown nonwoven fiber material for removing harmful chemicals includes the steps of: melt-blowing spinning fibers; cooling and solidifying the melt blown spinning fibers; forming a fibrous web laminate through the cooled and solidified spinning fibers; padding the fibrous web laminate in an aqueous deodorant solution containing a reactive nano-catalyst particle deodorant; and drying the fibrous web laminate padded in the aqueous deodorant solution.

Description

MELTBLOWN NONWOVEN FABRIC MATERIAL FOR REMOVING HARMFUL CHEMICALS AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to a meltblown non-woven fabric material for removing harmful chemicals and a method for manufacturing the same.

In general, webs or nonwoven fabrics containing melt blown fibers are used for applications such as sound absorption, sound insulation, heat insulation, filtration of particulates, and/or water/oil separation. In particular, it is often known to be advantageous to use synthetic resins from different polymers at the same time, specifically, a melt-blowing die technique capable of simultaneously producing plastic filaments from two different polymers is known. .

The meltblown web can be made of fibers of different diameters. The use of a filtration medium formed of a mass of nonwoven meltblown support and filtration fibers disposed in the same location, the support fibers on average having a relatively larger diameter than the filtration fibers. Also known is a composite filtration media web of fibers containing a controlled dispersion of a mixture of sub-micron and sub-micron diameter polymer fibers.

However, the manufacturing technology of the above-mentioned two or more types of polymer resins or non-woven fabrics having a diameter becomes an increase factor of the first manufacturing cost, and quality variations and combinations are caused by management factors that need to closely control various elements in the non-woven fabric manufacturing process. The frequency is quite high. Therefore, the development of a meltblown nonwoven fabric in which the properties of a nonwoven fabric capable of increasing the deodorant adhesion efficiency and high content in the post-treatment process of the web obtained through the process control technology integrated with only one thermoplastic resin is expressed is still required. This is true.

The present invention is to solve the above-mentioned problems, the object of the present invention, while maintaining a high content of deodorant during post-treatment of the melt-blown non-woven fabric material padding deodorant having an adsorption and decomposition effect on a chemical agent, light weight The branch is to provide a meltblown non-woven fabric material for removing harmful chemicals that maximizes high bulkiness, micro porosity and specific surface area.

In addition, the meltblown non-woven fabric material for removing harmful chemicals that can maximize the efficiency of deodorant attachment by grasping the tendency of physical properties of the fiber material according to the change of controllable technical elements in the manufacturing process compared to the conventional meltblown manufacturing method It is to provide a manufacturing method.

However, the problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

A method of manufacturing a melt-blown non-woven fabric material for removing harmful chemicals according to an embodiment of the present invention comprises: melt spinning a spinning fiber; Cooling and solidifying the melt-blown spinning fibers; Forming a fibrous web laminate through the cooled and solidified spinning fibers; Padding the fibrous web laminate in an aqueous deodorant solution containing reactive nanocatalyst particle deodorant; And drying the fibrous web laminate padded with the deodorant aqueous solution.

According to one aspect, the spinning fiber may be a thermoplastic polypropylene having a fiber-forming ability.

According to one aspect, the viscosity of the thermoplastic polypropylene having the fiber-forming ability may be a melting index (Melting Index) of 400 g/10min to 1800 g/10min,

According to one aspect, the step of melt-blown the spinning fiber may be performed at a spin beam temperature condition of 235°C to 275°C.

According to one aspect, the step of cooling and solidifying the melt-blown spinning fiber may be performed under a hot air temperature condition of 240°C to 280°C and an air volume condition of 1.00 cmm to 2.00 cmm.

According to one aspect, the step of melt-blown the spinning fibers is performed through spinneret, and forming the fibrous web laminate through the cooled and solidified spinning fibers is performed through a collector roller, The distance between the spinneret and the collector roller receiving the melt-blown spinning fibers is 400 nm to 800 nm, and the number of revolutions of the collector roller may be 3 mpm to 7 mpm.

According to one aspect, the reactive nanocatalyst particle deodorant, Zr-MOF (UiO-66-BDC-NH ₂ ), Zr(OH) ₄ , UiO-66, UiO-66-NH ₂ , UiO-66-NHMe, UiO-66-NMe ₂ , UiO-66-NO ₂ , UiO-67, UiO-67-NH ₂ , UiO-67-NHMe, UiO-67-NMe ₂ , UiO-67-NO ₂ , MOF-808 and NU It may include at least one selected from the group consisting of -1000.

According to one aspect, the concentration of the deodorant aqueous solution may be 2.5% to 20%.

According to one aspect, the step of padding the fibrous web laminate in an aqueous deodorant solution containing a reactive nanocatalyst particle deodorant may be performed at a mangle pressure of 1 bar to 3 bar.

According to one aspect, the step of drying the fibrous web laminate padded in the deodorant aqueous solution may be performed at a temperature condition of 120 °C to 160 °C.

According to an aspect, the deodorant aqueous solution containing the reactive nanocatalyst particle deodorant may further include an antibacterial agent.

According to the present invention, through a process optimized for spim beam temperature, hot air temperature, air volume conditions, etc., high bulkiness, micro porosity, and specific surface area can be maximized to realize a meltblown nonwoven fabric material having a high deodorant adhesion efficiency and content rate. In addition, by applying a reactive nano-catalyst particle deodorant to the melt-blown non-woven fabric material, it is possible to realize a melt-blown non-woven fiber material for removing harmful chemicals having excellent adsorption and decomposition performance.

1 is a flow chart for explaining a method of manufacturing a melt-blown fiber material for removing harmful chemicals according to an embodiment of the present invention.
2 is a diagram showing the structure of Zr-MOF.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms used in the present specification are terms used to appropriately represent a preferred embodiment of the present invention, which may vary according to a user's, operator's intention, or customs in the field to which the present invention pertains. Accordingly, definitions of these terms should be made based on the contents throughout the specification. The same reference numerals in each drawing denote the same members.

Throughout the specification, when one member is positioned “on” another member, this includes not only the case where one member abuts another member, but also the case where another member exists between the two members.

Throughout the specification, when a part “includes” a certain component, it means that the other component may be further included instead of excluding the other component.

Hereinafter, the melt blown fiber material for removing harmful chemicals of the present invention and a manufacturing method thereof will be described in detail with reference to examples and drawings. However, the present invention is not limited to these examples and drawings.

1 is a flow chart for explaining a method of manufacturing a melt-blown fiber material for removing harmful chemicals according to an embodiment of the present invention. Hereinafter, the present invention will be described with reference to FIG. 1.

A method of manufacturing a melt-blown fiber material for removing harmful chemicals according to an embodiment of the present invention comprises: a step of melt-blown spinning fibers (S100); Cooling and solidifying the melt-blown spinning fibers (S200); Forming a fibrous web laminate through the cooling-solidified spinning fibers (S300); Padding the fibrous web laminate on an aqueous deodorant solution containing reactive nanocatalyst particle deodorant (S400); And drying the fibrous web laminate padded in the deodorant aqueous solution (S500).

According to the present invention, through a process optimized for spim beam temperature, hot air temperature, air volume conditions, etc., high bulkiness, micro porosity, and specific surface area can be maximized to realize a melt blown fiber material having a high deodorant adhesion efficiency and content rate. , By applying a reactive nano-catalyst particle deodorant to the melt-blown fiber material, it is possible to realize a melt-blown fiber material for removing harmful chemicals having excellent adsorption and decomposition performance.

According to one aspect, the spinning fiber may be a thermoplastic polypropylene having a fiber-forming ability.

According to one aspect, the viscosity of the thermoplastic polypropylene having the fiber-forming ability may be a melting index (Melting Index) of 400 g/10min to 1800 g/10min,

According to one aspect, the step of melt-blown the spinning fiber may be performed at a spin beam temperature condition of 235°C to 275°C.

Melt blown step (S100) according to an embodiment of the present invention melt melt index (Melting Index) Melting blown composite spinning by using a thermoplastic polymer resin having a viscosity of 400 g/10min to 1800 g/10min viscosity as a main component It is a step of melt-blown with a spinning fiber through a spinning nozzle of the spin beam temperature at this time is preferably 235 ℃ to 275 ℃. When the temperature of the spin beam is lower than 235°C, defects may be generated in the step of forming a fibrous web laminate that is subsequently performed by deterioration of spinning stability and fusion polymer crystals. When the temperature is higher than 275°C, the viscosity of the polymer increases. Due to excessive elongation of the fibers, variations in fiber diameter or fine polymer short fibers are blown into the atmosphere other than the web lamination, which can cause deterioration in quality.

According to one aspect, the step of cooling and solidifying the melt-blown spinning fiber may be performed under a hot air temperature condition of 240°C to 280°C and an air volume condition of 1.00 cmm to 2.00 cmm.

Cooling and solidifying step (S200) according to an embodiment of the present invention is a very important factor in forming a non-woven fabric, and the hot air temperature and the air volume are important factors, and the hot air temperature is 240°C to 280°C, and the air volume is 1.00 cmm to 2.00 cmm. It is preferred. If the hot air temperature is lower than 240 °C, the physical properties of the non-woven fabric may be reduced due to rapid solidification, and if it is higher than 280 °C, it may lead to a decrease in touch and air permeability due to re-fusion, and when the air volume is lower than 1.00 cmm It may cause a problem in formation, and when it is higher than 2.00 cmm, the stretching ratio of the fiber is increased by high pressure, thereby causing a variation in the diameter of the filament.

According to one aspect, the step of melt-blown the spinning fibers is performed through spinneret, and forming the fibrous web laminate through the cooled and solidified spinning fibers is performed through a collector roller, The distance between the spinneret and the collector roller receiving the melt-blown spinning fibers is 400 nm to 800 nm, and the number of revolutions of the collector roller may be 3 mpm to 7 mpm.

The step of forming the fibrous web laminate according to an embodiment of the present invention (S300) is an important factor for determining the final quality weight and thickness of the nonwoven fabric, and the collector roller receiving the fibers of the spinneret and the melt-blown spinning fibers for spinning. It can be adjusted by the distance and the number of revolutions of the collector roller. In order to manufacture a melt-blown nonwoven fabric containing a deodorant, the distance between the spinneret and the collector roller is preferably 400 mm to 800 mm, and the rotation speed of the collector roller is 3 mpm to 7 mpm. When the distance between the spinneret and the collector roller is 400 mm or less, the fiber density becomes dense due to excessive decompression pressure, and thus, bulkiness and air permeability are expected to be reduced, and if it is 800 mm or more, the ability to form a nonwoven fabric may be deteriorated. In addition, when the number of rotations of the collector roller is 3 mpm or less, the weight of the nonwoven fabric may be increased due to excessive adhesion, which may limit the application.

According to one aspect, the harmful chemicals are bis-(2-chloroethyl)sulfide, pinacolyl methyl phosphonofluoridate, ethyl N,N- Dimethylphosphoroamidocyanidate, isopropyl methylphosphonofluoridate, trichloronitromethane, O-ethyl S-(2-diisopropylamino ) Ethyl methylphosphonothioate (O-ethyl S-(2-diisopropylamino)ethyl methylphosphonothioate) and may be one containing at least one chemical agent selected from the group consisting of derivatives thereof.

According to one aspect, the harmful chemical may be one containing at least one selected from the group consisting of neuroactive agents and blistering agents.

According to one aspect, the reactive nanocatalyst particle deodorant, Zr-MOF (UiO-66-BDC-NH ₂ ), Zr(OH) ₄ , UiO-66, UiO-66-NH ₂ , UiO-66-NHMe, UiO-66-NMe ₂ , UiO-66-NO ₂ , UiO-67, UiO-67-NH ₂ , UiO-67-NHMe, UiO-67-NMe ₂ , UiO-67-NO ₂ , MOF-808 and NU It may include at least one selected from the group consisting of -1000.

According to one aspect, the concentration of the deodorant aqueous solution may be 2.5% to 20%.

As a preferred example, the reactive nanocatalyst particle deodorant may be Zr-MOF (UiO-66-BDC-NH ₂ ). Zr-MOF is UiO-66-BDC-NH ₂ as Zr ⁴⁺ and 2-Aminoterephthalic acid. It is a porous structure made of a base. In particular, the Zr-based MOF has a simple manufacturing method and is cheaper than other porous structures, and has high porosity, high thermal stability, and hydrolysis stability.

2 is a diagram showing the structure of Zr-MOF. Referring to FIG. 2, Zr-MOF has amino and carboxylic acid functional groups at the ends of the unit structure, and these are the three major odor-causing substances such as ammonia, isogilacetic acid, and neutral and acid/base neutralization reactions to characterize the properties of the substance. Transform. In addition, since MOF is a porous structure having pores of ~11 이므로, it is also possible to adsorb odor-causing substances, thereby expressing deodorizing properties through a combination of chemical and physical deodorization functions. In addition, when the deodorant is added to the melt-blown nonwoven fabric material according to the present invention, it is preferable that the Zr-MOF concentration is 2.5% to 20%, and if the concentration is 2.5% or less, the deodorant property is poor, and when it is 20% or more, 99 Good quality can be confirmed by more than %, but it may increase in cost.

According to one aspect, the step of padding the fibrous web laminate in an aqueous deodorant solution containing a reactive nanocatalyst particle deodorant may be performed at a mangle pressure of 1 bar to 3 bar.

By controlling the pressure of the mangle during the padding operation, the pick-up rate (or the amount of adhesion) of the reactive nanocatalyst particle deodorant for the fibrous web laminate can be controlled.

If the pressure of the mangle is less than 1 bar, the amount of deodorant picked up on the fibrous web stack may be uneven, which may cause problems in weight variation of each part of the treated fabric, and the pressure of the mangle is 3 When the bar is exceeded, pick-up is reduced in the fibrous web laminate of the treatment aid, and there is a fear that the fabric is damaged when a thick fabric is used.

In the case of the non-woven material applied as a preferred example of the fiber material of the present invention, the thickness of the fabric itself is thicker than that of the general fabric and the pores are wider than that of the general fabric, so it is advantageous to support high-content catalyst particles, but the preferred mangle pressure ( It is necessary to select a mangle pressure of 2 bar to 2.5 bar).

According to one aspect, the step of drying the fibrous web laminate padded in the deodorant aqueous solution may be performed at a temperature condition of 120 °C to 160 °C.

In order to remove the solvent of the fabric immersed in the padding process, drying must be performed at an appropriate temperature. In the case of the melt-blown non-woven fabric material used in the present invention, the melting point is lower than that of a general material such as PET or cotton, so temperature conditions are selected You have to be careful. If the drying temperature is too high, the fiber whose main component is PP will cause deformation, and if the drying temperature is low, the non-woven fabric containing a large amount of processing liquid after immersion will remain undried.

According to one aspect, the step of drying the fibrous web laminate padded in the deodorant aqueous solution is performed in several steps, either discontinuously or continuously, and a first drying step performed at a temperature condition of 145°C to 160°C; A second drying step performed at a temperature condition of 130°C to 145°C; And a third drying step performed at a temperature condition of 120°C to 130°C.

According to one aspect, the step of drying the fiber material padded in the dispersion may be performed through a plurality of drying chambers.

In a padding-drying facility according to an exemplary embodiment of the present invention, a drying chamber is composed of 7 cells, and temperature conditions of each chamber can be separately set. Considering that the Tm of PP is about 160° C., chambers 1 to 3 were selected to be 150° C., chamber 4 to 140° C., and chambers 5 to 7 to 125° C. were selected. When drying, there was concern about damage to the fibers due to high temperature conditions, but a large amount of deodorant was picked up to the nonwoven fabric immediately after being immersed in the processing solution, thereby counteracting the effect of direct drying hot air on the nonwoven fabric.

According to an aspect, the fibrous web laminate may be further included;

According to an aspect, the deodorant aqueous solution containing the reactive nanocatalyst particle deodorant may further include an antibacterial agent.

According to one aspect, the step of antibacterially processing the fiber material may be performed through an exhaustion method before the step of padding the fibrous web laminate to an aqueous deodorant solution containing the reactive nanocatalyst particle deodorant.

According to one aspect, the step of antibacterially processing the fiber material may be performed simultaneously with the step of padding the fibrous web laminate in an aqueous deodorant solution containing a reactive nanocatalyst particle deodorant.

Hereinafter, the present invention will be described in more detail by examples and comparative examples.

However, the following examples are only for illustrating the present invention, and the contents of the present invention are not limited to the following examples.

Examples 1 to 5

The melt-blown equipment required for the production of PP non-woven fabric was 402 Hole, L/D (3.0/0.30mm) detention, and a melt-blown non-woven fabric material for removing harmful chemicals was prepared according to the flow chart in FIG.

The spinning process conditions of the nonwoven fabric for each specimen listed in Table 1 below were performed by fixing the fixed factor for the remaining process conditions when changing the variation factor, and Table 2 below shows the properties of the spun nonwoven fabric.

Melt-blown unit fixing
factor Fluctuation factor One 2 3 4 5 Example 1 Spin beam temperature ℃ 255 235 245 255 265 275 Example 2 Hot air temperature ℃ 250 240 250 260 270 280 Example 3 Hot air volume cmm 1.50 1.00 1.25 1.50 1.75 2.00 Example 4 Distance between collector rollers mm 400 400 500 600 700 800 Example 5 Current roller rotation speed mpm 3 3 4 5 6 7

Melt-blown weight
(g/m
2
) thickness
(0.01mm) Air permeability
(cm
3
/cm
2
/sec) Porosity
(um) Example 1 Spin beam temperature 18.6~19.7 19.0~20.0 7.8~16.8 - Example 2 Hot air temperature 18.7~19.1 18.0~19.4 11.7~16.0 - Example 3 Hot air volume 18.6~19.4 18.2~19.0 8.2~23.8 13.5~23.3 Example 4 Distance between collector rollers 18.7~20.8 18.8~20.5 12.9~17.4 - Example 5 Corrector roller speed 8.56~18.5 8.0~18.4 14.4~37.2 16.8~23.7

Example 6

The prepared PP nonwoven fabric sample was immersed in the prepared deodorant aqueous solution (1.25, 2.5, 5, 10, 20% ows) for about 1 minute, and the excess deodorant aqueous solution was removed from the nonwoven fabric under the conditions of padding mangle roller press 1 ton. Here, immersion and padding were performed three times to maximize the deodorant content of the nonwoven fabric, and after the padding, the deodorant content and the add-on rate of the polypropylene nonwoven fabric were measured, and the deodorization rate according to each treated material is shown in Table 3 below.

Zr-MOF concentration (OWS) 1.25 2.5 5 4 5 Add-on rate (%) 1.14 3.25 5.54 15.67 40.95 Zr-MOF (g/m2) 0.21 0.62 1.03 2.96 7.60 Deodorization rate (%) 21.43 21.43 12.5 55.36 94.64

As described above, although the embodiments have been described by a limited embodiment and drawings, those skilled in the art can make various modifications and variations from the above description. For example, even if the described techniques are performed in a different order than the described method, and/or the described components are combined or combined in a different form from the described method, or replaced or replaced by another component or equivalent Appropriate results can be achieved. Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (11)

Melting blown the spinning fibers;
Cooling and solidifying the melt-blown spinning fibers;
Forming a fibrous web laminate through the cooled and solidified spinning fibers;
Padding the fibrous web laminate in an aqueous deodorant solution containing reactive nanocatalyst particle deodorant; And
Including the step of drying the fibrous web laminate padded in the aqueous deodorant solution;
Method of manufacturing a meltblown nonwoven fabric material for removing harmful chemicals.
According to claim 1,
The spinning fiber,
It is a thermoplastic polypropylene having a fiber-forming ability,
Method of manufacturing a meltblown nonwoven fabric material for removing harmful chemicals.
According to claim 2,
The viscosity of the thermoplastic polypropylene having the fiber forming ability,
Melting Index (Melting Index) of 400 g/10min to 1800 g/10min,
Method of manufacturing a meltblown nonwoven fabric material for removing harmful chemicals.
According to claim 1,
The step of melt-blown the spinning fibers,
It is carried out at a spin beam temperature conditions of 235 ℃ to 275 ℃,
Method of manufacturing a meltblown nonwoven fabric material for removing harmful chemicals.
According to claim 1,
Cooling and solidifying the melt-blown spinning fibers,
It is carried out under the hot air temperature conditions of 240 ℃ to 280 ℃ and air volume conditions of 1.00 cmm to 2.00 cmm,
Method of manufacturing a meltblown nonwoven fabric material for removing harmful chemicals.
According to claim 1,
The step of melt-blown the spinning fiber is performed through spinneret,
The step of forming a fibrous web laminate through the cooled solidified spinning fibers is performed through a collector roller,
The distance between the spinneret and the collector roller receiving the melt-blown spinned fiber is 400 nm to 800 nm,
The number of revolutions of the collector roller is 3 mpm to 7 mpm,
Method of manufacturing a meltblown nonwoven fabric material for removing harmful chemicals.
According to claim 1,
The reactive nano-catalyst particle deodorant,
Zr-MOF(UiO-66-BDC-NH ₂ ), Zr(OH) ₄ , UiO-66, UiO-66-NH2, UiO-66-NHMe, UiO-66-NMe ₂ , UiO-66-NO ₂ , UiO-67, UiO-67-NH ₂ , UiO-67-NHMe, UiO-67-NMe ₂ , UiO-67-NO ₂ , comprising at least one selected from the group consisting of MOF-808 and NU-1000 ,
Method of manufacturing a meltblown nonwoven fabric material for removing harmful chemicals.
According to claim 1,
The concentration of the deodorant aqueous solution,
2.5% to 20%,
Method of manufacturing a meltblown nonwoven fabric material for removing harmful chemicals.
According to claim 1,
The step of padding the fibrous web laminate in an aqueous deodorant solution containing a reactive nanocatalyst particle deodorant,
Is carried out at a mangle (Mangle) pressure of 1 bar to 3 bar,
Method of manufacturing a meltblown nonwoven fabric material for removing harmful chemicals.
According to claim 1,
Drying the fibrous web laminate padded in the aqueous deodorant solution,
It is carried out at a temperature condition of 120 ℃ to 160 ℃,
Method of manufacturing a meltblown nonwoven fabric material for removing harmful chemicals.
According to claim 1,
The deodorant aqueous solution containing the reactive nano-catalyst particle deodorant,
It further comprises an antibacterial agent,
Method of manufacturing a meltblown nonwoven fabric material for removing harmful chemicals.

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