阅读说明：本技术 含姜活性成分的涤纶大生物纤维及其制备方法 (Dacron macrobiological fiber containing active ingredients of ginger and preparation method thereof ) 是由 黄效华 甄丽 池姗 于 2021-08-19 设计创作，主要内容包括：本发明公开了一种含姜活性成分的涤纶大生物纤维及其制备方法,涤纶大生物纤维包括以下原料：涤纶聚酯切片、介孔SiO2纳米粉体、焦磷酸钠、季戊四醇、消光粉、直链烷基苯磺酸钠、烷基烯酮二聚体、富勒烯、抗氧化剂、聚乙烯胺、聚氯乙烯、聚丙烯、聚酰胺、玉米预糊化淀粉、瓜尔胶、乙醇、姜活性成分、分散剂。本发明能够有效的提高涤纶大生物纤维的抗拉伸性能,降低其损坏的风险,且提高涤纶大生物纤维的抗菌性能,有利于使用。(The invention discloses a terylene macrobiotic fiber containing active ingredients of ginger and a preparation method thereof, wherein the terylene macrobiotic fiber comprises the following raw materials: polyester chips, mesoporous SiO2 nano powder, sodium pyrophosphate, pentaerythritol, matting powder, linear alkyl benzene sulfonate, alkyl ketene dimer, fullerene, antioxidant, polyvinyl amine, polyvinyl chloride, polypropylene, polyamide, corn pregelatinized starch, guar gum, ethanol, ginger active ingredient and dispersing agent. The invention can effectively improve the tensile resistance of the polyester macrobiotic fiber, reduce the damage risk of the polyester macrobiotic fiber, improve the antibacterial property of the polyester macrobiotic fiber and is beneficial to use.)

1. The polyester macrobio-fiber containing active ingredients of ginger is characterized by comprising the following raw materials in parts by weight: 300 parts of polyester chips, 10-20 parts of mesoporous SiO2 nano powder, 0.5-2 parts of sodium pyrophosphate, 0.3-1 part of pentaerythritol, 1-3 parts of matting powder, 1-2 parts of linear alkyl benzene sulfonate, 0.2-0.8 part of alkyl ketene dimer, 0.5-0.8 part of fullerene, 0.1-0.3 part of antioxidant, 0.2-0.5 part of polyvinylamine, 1-2 parts of polyvinyl chloride, 1-3 parts of polypropylene, 1-2 parts of polyamide, 0.7-1 part of corn pregelatinized starch, 0.2-0.5 part of guar gum, 8-16 parts of ethanol, 1-3 parts of active ginger component and 1-3 parts of dispersant.

2. The terylene macrobio-fiber containing active ingredients of ginger as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 100 parts of polyester chips, 10 parts of mesoporous SiO2 nano powder, 0.5 part of sodium pyrophosphate, 0.3 part of pentaerythritol, 1 part of matting powder, 1 part of linear alkyl benzene sulfonic acid sodium, 0.2 part of alkyl ketene dimer, 0.5 part of fullerene, 0.1 part of antioxidant, 0.2 part of polyvinylamine, 1 part of polyvinyl chloride, 1 part of polypropylene, 1 part of polyamide, 0.7 part of corn pregelatinized starch, 0.2 part of guar gum, 8 parts of ethanol, 1 part of ginger active ingredient and 1 part of dispersing agent.

3. The terylene macrobio-fiber containing active ingredients of ginger as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 200 parts of polyester chips, 25 parts of mesoporous SiO2 nano powder, 1 part of sodium pyrophosphate, 0.8 part of pentaerythritol, 2 parts of matting powder, 1.5 parts of linear alkyl benzene sulfonic acid sodium, 0.6 part of alkyl ketene dimer, 0.6 part of fullerene, 0.2 part of antioxidant, 0.3 part of polyvinylamine, 1.5 parts of polyvinyl chloride, 2 parts of polypropylene, 1.5 parts of polyamide, 0.9 part of corn pregelatinized starch, 0.3 part of guar gum, 12 parts of ethanol, 2 parts of ginger active ingredient and 2 parts of dispersing agent.

4. The terylene macrobio-fiber containing active ingredients of ginger as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 300 parts of polyester chips, 20 parts of mesoporous SiO2 nano powder, 2 parts of sodium pyrophosphate, 1 part of pentaerythritol, 3 parts of matting powder, 2 parts of linear alkyl benzene sulfonic acid sodium salt, 0.8 part of alkyl ketene dimer, 0.8 part of fullerene, 0.3 part of antioxidant, 0.5 part of polyvinylamine, 2 parts of polyvinyl chloride, 3 parts of polypropylene, 2 parts of polyamide, 1 part of corn pregelatinized starch, 0.5 part of guar gum, 16 parts of ethanol, 3 parts of ginger active component and 3 parts of dispersing agent.

5. The terylene macrobiofiber containing active ingredients of ginger as claimed in claim 1, wherein the model of the matting powder is OK 52.

6. The dacron macrobio fiber containing active ingredients of ginger as claimed in claim 1, wherein said active ingredients of ginger comprise ginger essential oil, gingerol protease and diphenyl heptane, wherein gingerol comprises shogaols, gingerol glycols, gingerol, zingerone, gingerol, and parazingerone.

7. The terylene macrobio-fiber containing active ingredients of ginger as claimed in claim 1, wherein the polyvinylamine is a silane coupling agent.

8. The preparation method of the terylene macrobiotic fiber containing active ingredients of ginger is characterized by comprising the following steps:

s1: putting 0.5-2 parts of sodium pyrophosphate, 0.3-1 part of pentaerythritol, 1-3 parts of matting powder, 1-2 parts of linear alkyl benzene sodium sulfonate, 0.2-0.8 part of alkyl ketene dimer and 0.5-0.8 part of fullerene into a stirring box, stirring and mixing, taking out after stirring and mixing uniformly, putting into a grinding machine for grinding, and grinding particles with the particle size of 6-8 mu m to obtain mixed particles;

s2: placing 0.2-0.5 part of polyvinylamine, 1-2 parts of polyvinyl chloride, 1-3 parts of polypropylene, 1-2 parts of polyamide, 0.7-1 part of corn pregelatinized starch and 0.2-0.5 part of guar gum in a stirring box, simultaneously adding a proper amount of water, stirring and mixing uniformly, taking out the uniformly mixed raw materials, placing the raw materials into a heating tank for heating treatment, heating to 70-80 ℃ to prepare an anti-stretching solution, then concentrating to obtain anti-stretching crystals, and grinding and crushing for later use;

s3: sequentially adding 1-3 parts of active ginger components, 10-20 parts of mesoporous SiO2 nano powder and 1-3 parts of dispersing agent into 500mL of deionized water, and performing shear dispersion by using a magnetic stirrer, wherein the rotating speed of the magnetic stirrer is set to be 100-300 r/min; obtaining a nano composite dispersion liquid containing active ingredients, volatilizing a solvent to obtain a mesoporous SiO2 molecular nest containing the active ingredients of the parvum officinale, and grinding and crushing for later use;

s4: spinning, stretching and winding the mixed particles in the S1, the stretch-resistant crystals in the S2, the mesoporous SiO2 molecular nest containing the active component of the turmeric in the S3, 0.1-0.3 part of antioxidant and 300 parts of polyester chips by using a melt spinning method to prepare the polyester macrobio fiber containing the active component of the turmeric;

s5: and (3) soaking the polyester macrobio-fiber containing the active ingredient of the ginger prepared in the step (S4) in 8-16 parts of ethanol solution for 30-50min, taking out and naturally airing to prepare the disinfected polyester macrobio-fiber containing the active ingredient of the ginger.

Technical Field

The invention relates to the field of polyester macrobiotic fiber, in particular to polyester macrobiotic fiber containing active ingredients of ginger and a preparation method thereof.

Background

Polyester, also called polyester fiber, is a synthetic fiber obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol, called PET fiber for short, and belongs to a macromolecular compound, macrobiological fiber, which means that bioactive molecules are added into fiber (cotton, hemp, wool, silk, viscose, terylene, nitrile, brocade and the like) for modification, so that the produced active fiber with biological function is produced, therefore, the polyester macrobiological fiber is just to modify the polyester fiber by utilizing the bioactive molecules in ginseng/lucid ganoderma/medlar/saffron/ginger to endow the polyester fiber with corresponding biological function;

the existing polyester fiber containing the active ingredient of the ginger has poor antibacterial property and tensile resistance, the phenomenon of pulling damage caused by large pulling force often occurs in the using process, harmful substances are easily absorbed into the fiber, the body of a user is greatly damaged, the using requirement cannot be met, and the situation is comprehensively improved, so that the polyester macrobio fiber containing the active ingredient of the ginger and the preparation method thereof are provided.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides the terylene macrobiotic fiber containing the active ingredients of ginger and the preparation method thereof.

The invention provides a terylene macrobiotic fiber containing active ingredients of ginger, which comprises the following raw materials in parts by weight: 300 parts of polyester chips, 10-20 parts of mesoporous SiO2 nano powder, 0.5-2 parts of sodium pyrophosphate, 0.3-1 part of pentaerythritol, 1-3 parts of matting powder, 1-2 parts of linear alkyl benzene sulfonate, 0.2-0.8 part of alkyl ketene dimer, 0.5-0.8 part of fullerene, 0.1-0.3 part of antioxidant, 0.2-0.5 part of polyvinylamine, 1-2 parts of polyvinyl chloride, 1-3 parts of polypropylene, 1-2 parts of polyamide, 0.7-1 part of corn pregelatinized starch, 0.2-0.5 part of guar gum, 8-16 parts of ethanol, 1-3 parts of active ginger component and 1-3 parts of dispersant.

Preferably, the feed comprises the following raw materials in parts by weight: 100 parts of polyester chips, 10 parts of mesoporous SiO2 nano powder, 0.5 part of sodium pyrophosphate, 0.3 part of pentaerythritol, 1 part of matting powder, 1 part of linear alkyl benzene sulfonic acid sodium, 0.2 part of alkyl ketene dimer, 0.5 part of fullerene, 0.1 part of antioxidant, 0.2 part of polyvinylamine, 1 part of polyvinyl chloride, 1 part of polypropylene, 1 part of polyamide, 0.7 part of corn pregelatinized starch, 0.2 part of guar gum, 8 parts of ethanol, 1 part of ginger active ingredient and 1 part of dispersing agent.

Preferably, the feed comprises the following raw materials in parts by weight: 200 parts of polyester chips, 25 parts of mesoporous SiO2 nano powder, 1 part of sodium pyrophosphate, 0.8 part of pentaerythritol, 2 parts of matting powder, 1.5 parts of linear alkyl benzene sulfonic acid sodium, 0.6 part of alkyl ketene dimer, 0.6 part of fullerene, 0.2 part of antioxidant, 0.3 part of polyvinylamine, 1.5 parts of polyvinyl chloride, 2 parts of polypropylene, 1.5 parts of polyamide, 0.9 part of corn pregelatinized starch, 0.3 part of guar gum, 12 parts of ethanol, 2 parts of ginger active ingredient and 2 parts of dispersing agent.

Preferably, the feed comprises the following raw materials in parts by weight: 300 parts of polyester chips, 20 parts of mesoporous SiO2 nano powder, 2 parts of sodium pyrophosphate, 1 part of pentaerythritol, 3 parts of matting powder, 2 parts of linear alkyl benzene sulfonic acid sodium salt, 0.8 part of alkyl ketene dimer, 0.8 part of fullerene, 0.3 part of antioxidant, 0.5 part of polyvinylamine, 2 parts of polyvinyl chloride, 3 parts of polypropylene, 2 parts of polyamide, 1 part of corn pregelatinized starch, 0.5 part of guar gum, 16 parts of ethanol, 3 parts of ginger active component and 3 parts of dispersing agent.

Preferably, the model of the matting powder is OK 52.

Preferably, the active ingredients of ginger include ginger essential oil, gingerol protease and diphenylheptanes, wherein gingerol comprises shogaols, gingerol, zingiberones, gingerols, zingerones and parazingerones.

Preferably, the polyvinylamine is a silane coupling agent.

The invention also provides a preparation method of the terylene macrobiotic fiber containing the active ingredients of ginger, which comprises the following steps:

s1: putting 0.5-2 parts of sodium pyrophosphate, 0.3-1 part of pentaerythritol, 1-3 parts of matting powder, 1-2 parts of linear alkyl benzene sodium sulfonate, 0.2-0.8 part of alkyl ketene dimer and 0.5-0.8 part of fullerene into a stirring box, stirring and mixing, taking out after stirring and mixing uniformly, putting into a grinding machine for grinding, and grinding particles with the particle size of 6-8 mu m to obtain mixed particles;

s2: placing 0.2-0.5 part of polyvinylamine, 1-2 parts of polyvinyl chloride, 1-3 parts of polypropylene, 1-2 parts of polyamide, 0.7-1 part of corn pregelatinized starch and 0.2-0.5 part of guar gum in a stirring box, simultaneously adding a proper amount of water, stirring and mixing uniformly, taking out the uniformly mixed raw materials, placing the raw materials into a heating tank for heating treatment, heating to 70-80 ℃ to prepare an anti-stretching solution, then concentrating to obtain anti-stretching crystals, and grinding and crushing for later use;

s3: sequentially adding 1-3 parts of active ginger components, 10-20 parts of mesoporous SiO2 nano powder and 1-3 parts of dispersing agent into 500mL of deionized water, and performing shear dispersion by using a magnetic stirrer, wherein the rotating speed of the magnetic stirrer is set to be 100-300 r/min; obtaining a nano composite dispersion liquid containing active ingredients, volatilizing a solvent to obtain a mesoporous SiO2 molecular nest containing the active ingredients of the parvum officinale, and grinding and crushing for later use;

s4: spinning, stretching and winding the mixed particles in the S1, the stretch-resistant crystals in the S2, the mesoporous SiO2 molecular nest containing the active component of the turmeric in the S3, 0.1-0.3 part of antioxidant and 300 parts of polyester chips by using a melt spinning method to prepare the polyester macrobio fiber containing the active component of the turmeric;

s5: and (3) soaking the polyester macrobio-fiber containing the active ingredient of the ginger prepared in the step (S4) in 8-16 parts of ethanol solution for 30-50min, taking out and naturally airing to prepare the disinfected polyester macrobio-fiber containing the active ingredient of the ginger.

Compared with the prior art, the invention has the beneficial effects that:

the invention can effectively improve the tensile resistance of the polyester macrobiotic fiber, reduce the damage risk of the polyester macrobiotic fiber, improve the antibacterial property of the polyester macrobiotic fiber and is beneficial to use.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples.

Example one

The embodiment provides a terylene macrobiotic fiber containing active ingredients of ginger, which comprises the following raw materials in parts by weight: 100 parts of polyester chips, 10 parts of mesoporous SiO2 nano powder, 0.5 part of sodium pyrophosphate, 0.3 part of pentaerythritol, 1 part of matting powder, 1 part of linear alkyl benzene sulfonic acid sodium, 0.2 part of alkyl ketene dimer, 0.5 part of fullerene, 0.1 part of antioxidant, 0.2 part of polyvinylamine, 1 part of polyvinyl chloride, 1 part of polypropylene, 1 part of polyamide, 0.7 part of corn pregelatinized starch, 0.2 part of guar gum, 8 parts of ethanol, 1 part of ginger active ingredient and 1 part of dispersing agent, wherein the model of the matting powder is OK52, the ginger active ingredient comprises ginger essential oil, gingerol, ginger protease and diphenyl heptane substances, wherein the gingerol contains shogaol, gingerol, zingerone and paragingerol, and the polyvinylamine is a silane coupling agent.

The embodiment also provides a preparation method of the terylene macrobiotic fiber containing the active ingredients of ginger, which comprises the following steps:

s1: putting 0.5 part of sodium pyrophosphate, 0.3 part of pentaerythritol, 1 part of matting powder, 1 part of linear alkyl benzene sulfonate, 0.2 part of alkyl ketene dimer and 0.5 part of fullerene into a stirring box, stirring and mixing, taking out and putting into a grinding machine for grinding after uniform stirring and mixing, and grinding particles with the particle size of 6-8 mu m to obtain mixed particles;

s2: placing 0.2 part of polyvinylamine, 1 part of polyvinyl chloride, 1 part of polypropylene, 1 part of polyamide, 0.7 part of corn pregelatinized starch and 0.2 part of guar gum in a stirring box, simultaneously adding a proper amount of water, stirring and mixing uniformly, taking out the uniformly mixed raw materials, placing the raw materials into a heating tank for heating treatment, heating to 70-80 ℃ to prepare a stretch-resistant solution, then performing concentration operation to obtain a stretch-resistant crystal, and grinding and crushing for later use;

s3: sequentially adding 1 part of active ginger component, 10 parts of mesoporous SiO2 nano powder and 1 part of dispersing agent into 500mL of deionized water, and shearing and dispersing by using a magnetic stirrer, wherein the rotating speed of the magnetic stirrer is set to be 100-300 r/min; obtaining a nano composite dispersion liquid containing active ingredients, volatilizing a solvent to obtain a mesoporous SiO2 molecular nest containing the active ingredients of the parvum officinale, and grinding and crushing for later use;

s4: spinning, stretching and winding the mixed particles in the S1, the stretch-resistant crystals in the S2, the mesoporous SiO2 molecular nest containing the active component of the turmeric in the S3, 0.1 part of antioxidant and 100 parts of polyester chips by using a melt spinning method to prepare the polyester macrobio fiber containing the active component of the ginger;

s5: and (3) soaking the polyester macrobio fiber containing the active ingredients of the ginger prepared in the step (S4) in 8 parts of ethanol solution for 30-50min, taking out and naturally airing to prepare the disinfected polyester macrobio fiber containing the active ingredients of the ginger.

Example two

The embodiment provides a terylene macrobiotic fiber containing active ingredients of ginger, which comprises the following raw materials in parts by weight: 200 parts of polyester chips, 25 parts of mesoporous SiO2 nano powder, 1 part of sodium pyrophosphate, 0.8 part of pentaerythritol, 2 parts of matting powder, 1.5 parts of linear alkyl benzene sulfonic acid sodium, 0.6 part of alkyl ketene dimer, 0.6 part of fullerene, 0.2 part of antioxidant, 0.3 part of polyvinylamine, 1.5 parts of polyvinyl chloride, 2 parts of polypropylene, 1.5 parts of polyamide, 0.9 part of corn pregelatinized starch, 0.3 part of guar gum, 12 parts of ethanol, 2 parts of ginger active ingredient and 2 parts of dispersing agent, wherein the model of the matting powder is OK52, the ginger active ingredient comprises ginger essential oil, gingerol and diphenyl heptane substances, wherein the gingerol comprises gingerol phenols, gingerol, zingerone and parazingerone, and the polyvinylamine is a silane coupling agent.

The embodiment also provides a preparation method of the terylene macrobiotic fiber containing the active ingredients of ginger, which comprises the following steps:

s1: putting 1 part of sodium pyrophosphate, 0.8 part of pentaerythritol, 2 parts of matting powder, 1.5 parts of linear alkyl benzene sulfonate, 0.6 part of alkyl ketene dimer and 0.6 part of fullerene into a stirring box, stirring and mixing, taking out and putting into a grinding machine for grinding after uniform stirring and mixing, and grinding particles with the particle size of 6-8 mu m to obtain mixed particles;

s2: placing 0.3 part of polyvinylamine, 1.5 parts of polyvinyl chloride, 2 parts of polypropylene, 1.5 parts of polyamide, 0.9 part of corn pregelatinized starch and 0.3 part of guar gum in a stirring box, simultaneously adding a proper amount of water, stirring and mixing uniformly, taking out the uniformly mixed raw materials, putting the uniformly mixed raw materials into a heating tank for heating treatment, heating to 70-80 ℃ to prepare a stretch-resistant solution, then performing concentration operation to obtain stretch-resistant crystals, and grinding and crushing for later use;

s3: sequentially adding 2 parts of active ginger component, 25 parts of mesoporous SiO2 nano powder and 2 parts of dispersing agent into 500mL of deionized water, and shearing and dispersing by using a magnetic stirrer, wherein the rotating speed of the magnetic stirrer is set to be 100-300 r/min; obtaining a nano composite dispersion liquid containing active ingredients, volatilizing a solvent to obtain a mesoporous SiO2 molecular nest containing the active ingredients of the parvum officinale, and grinding and crushing for later use;

s4: spinning, stretching and winding the mixed particles in the S1, the stretch-resistant crystals in the S2, the mesoporous SiO2 molecular nest containing the active component of the turmeric in the S3, 0.2 part of antioxidant and 200 parts of polyester chips by using a melt spinning method to prepare the polyester macrobio fiber containing the active component of the ginger;

s5: and (3) soaking the polyester macrobio fiber containing the active ingredient of the ginger prepared in the step (S4) in an ethanol solution of 12 parts of ethanol for 30-50min, taking out and naturally airing to prepare the disinfected polyester macrobio fiber containing the active ingredient of the ginger.

EXAMPLE III

The embodiment provides a terylene macrobiotic fiber containing active ingredients of ginger, which comprises the following raw materials in parts by weight: 300 parts of polyester chips, 20 parts of mesoporous SiO2 nano powder, 2 parts of sodium pyrophosphate, 1 part of pentaerythritol, 3 parts of matting powder, 2 parts of linear alkylbenzene sulfonate, 0.8 part of alkyl ketene dimer, 0.8 part of fullerene, 0.3 part of antioxidant, 0.5 part of polyvinylamine, 2 parts of polyvinyl chloride, 3 parts of polypropylene, 2 parts of polyamide, 1 part of corn pregelatinized starch, 0.5 part of guar gum, 16 parts of ethanol, 3 parts of ginger active ingredients and 3 parts of dispersing agent, wherein the model of the matting powder is OK52, the ginger active ingredients comprise ginger essential oil, gingerol protease and diphenyl heptane substances, the gingerol contains gingerol phenols, gingerol, zingiberol, zingerone and parazingerone, and the polyvinylamine is a silane coupling agent.

The embodiment also provides a preparation method of the terylene macrobiotic fiber containing the active ingredients of ginger, which comprises the following steps:

s1: putting 2 parts of sodium pyrophosphate, 1 part of pentaerythritol, 3 parts of matting powder, 2 parts of linear alkyl benzene sodium sulfonate, 0.8 part of alkyl ketene dimer and 0.8 part of fullerene into a stirring box, stirring and mixing, taking out and putting into a grinding machine for grinding after stirring and mixing uniformly, and grinding particles with the particle size of 6-8 mu m to obtain mixed particles;

s2: placing 0.5 part of polyvinylamine, 2 parts of polyvinyl chloride, 3 parts of polypropylene, 2 parts of polyamide, 1 part of corn pregelatinized starch and 0.5 part of guar gum in a stirring box, simultaneously adding a proper amount of water, stirring and mixing uniformly, taking out the uniformly mixed raw materials, placing the raw materials into a heating tank for heating treatment, heating to 70-80 ℃ to prepare a stretch-resistant solution, then performing concentration operation to obtain stretch-resistant crystals, and grinding and crushing for later use;

s3: sequentially adding 3 parts of active ginger component, 20 parts of mesoporous SiO2 nano powder and 3 parts of dispersing agent into 500mL of deionized water, and shearing and dispersing by using a magnetic stirrer, wherein the rotating speed of the magnetic stirrer is set to be 100-300 r/min; obtaining a nano composite dispersion liquid containing active ingredients, volatilizing a solvent to obtain a mesoporous SiO2 molecular nest containing the active ingredients of the parvum officinale, and grinding and crushing for later use;

s4: spinning, stretching and winding the mixed particles in the S1, the stretch-resistant crystals in the S2, the mesoporous SiO2 molecular nest containing the active component of the turmeric in the S3, 0.3 part of antioxidant and 300 parts of polyester chips by using a melt spinning method to prepare the polyester macrobio fiber containing the active component of the ginger;

s5: and (3) soaking the polyester macrobio fiber containing the active ingredient of the ginger prepared in the step (S4) in an ethanol solution of 16 parts of ethanol for 30-50min, taking out and naturally airing to prepare the disinfected polyester macrobio fiber containing the active ingredient of the ginger.

For the polyester macrobio fibers containing active ingredients of ginger prepared in the first to third examples, compared with the conventional polyester macrobio fibers containing active ingredients of ginger, the experimental data are shown in the following table:

as can be seen from the above table, the polyester macrobio fiber containing active ingredients of ginger provided by the invention is obviously improved, and the second embodiment is the best embodiment.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.