KR102658444B1 - Polyester non-woven fabric for engineering works and method for fabricating the same - Google Patents
Polyester non-woven fabric for engineering works and method for fabricating the same Download PDFInfo
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- KR102658444B1 KR102658444B1 KR1020230196070A KR20230196070A KR102658444B1 KR 102658444 B1 KR102658444 B1 KR 102658444B1 KR 1020230196070 A KR1020230196070 A KR 1020230196070A KR 20230196070 A KR20230196070 A KR 20230196070A KR 102658444 B1 KR102658444 B1 KR 102658444B1
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 52
- 229920000728 polyester Polymers 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 48
- 239000000835 fiber Substances 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000000843 powder Substances 0.000 claims description 25
- 239000005909 Kieselgur Substances 0.000 claims description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- 238000009987 spinning Methods 0.000 claims description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 229940065472 octyl acrylate Drugs 0.000 claims description 5
- ANISOHQJBAQUQP-UHFFFAOYSA-N octyl prop-2-enoate Chemical compound CCCCCCCCOC(=O)C=C ANISOHQJBAQUQP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 5
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 4
- 238000009960 carding Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 230000035699 permeability Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000002994 raw material Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 159000000007 calcium salts Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 239000012963 UV stabilizer Substances 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4274—Rags; Fabric scraps
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/20—Industrial for civil engineering, e.g. geotextiles
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/20—Industrial for civil engineering, e.g. geotextiles
- D10B2505/204—Geotextiles
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonwoven Fabrics (AREA)
Abstract
본 발명은 재생 폴리에스테르를 이용한 폴리에스테르 토목용 부직포로서, 흡습성이 개선된 토목용 부직포 및 이의 제조방법에 관한 것이다.The present invention is a polyester nonwoven fabric for civil engineering using recycled polyester, and relates to a nonwoven fabric for civil engineering with improved hygroscopicity and a method for manufacturing the same.
Description
본 발명은 물 흡수 효과가 우수한 토목용 부직포 및 이의 제조방법에 관한 것이다.The present invention relates to a nonwoven fabric for civil engineering with excellent water absorption effect and a method of manufacturing the same.
부직포(non-woven fabric)는 방적, 제직, 편성 등의 공정없이 열과 수지를 이용하여 섬유가 서로 얽히도록 기계적인 처리, 수분 및 열처리를 통해 섬유 상호 간 결합하여 원단 형태로 만들어진 것으로, 가볍고 통기성과 보온성이 있으며, 절단 부분이 풀리지 않는 특징을 갖는다.Non-woven fabric is made into a fabric by combining fibers with each other through mechanical treatment, moisture, and heat treatment to entangle the fibers using heat and resin without any processes such as spinning, weaving, or knitting. It is light, breathable, and durable. It has thermal insulation properties and the cut portion does not come loose.
부직포는 섬유상으로 형성될 수 있다면 어떠한 원료를 이용해서도 제작이 가능하며, 천연섬유, 합성섬유, 재생섬유, 유리섬유 등의 무기섬유 등으로 제작이 가능하며, 장섬유 뿐만 아니라 단섬유를 이용하여 제작하는 것 또한 가능하다.Non-woven fabric can be manufactured using any raw material as long as it can be formed into a fibrous form. It can be manufactured from natural fibers, synthetic fibers, recycled fibers, inorganic fibers such as glass fiber, etc., and can be manufactured using short fibers as well as long fibers. It is also possible to produce.
이러한 부직포는 의류, 산업분야, 토목건축분야, 농업 등의 다양한 분야에서 활용되고 있으며, 각 용도에 따라 적합한 물성을 만족하는 목적성 부직포의 개발도 활발히 이루어지고 있다.These nonwoven fabrics are used in various fields such as clothing, industry, civil engineering, and agriculture, and the development of purpose-built nonwoven fabrics that satisfy appropriate physical properties for each application is also being actively developed.
이 중, 토목용 부직포는 토목, 건설 현장에서 연약지반이나 구조물 경사면에 포설하여 지반의 지지력을 보강하고, 안정화를 위해 널리 사용되고 있다.Among these, nonwoven fabrics for civil engineering are widely used in civil engineering and construction sites to reinforce the bearing capacity of the ground and stabilize it by laying it on soft ground or slopes of structures.
토목용 부직포는 이질의 토양이 섞이지 않도록 토양의 분리 효과를 나타내고, 기계적 특성이 우수하여 쉽게 파괴되지 않는 특성을 가질 뿐만 아니라, 부직포가 설치된 위치의 지반 지력을 보강하는 기능을 가질 뿐만 아니라, 투수성이 우수하여 물은 통과시켜 배수성 또한 우수한 특성을 갖는다.Nonwoven fabric for civil engineering not only has a soil separation effect to prevent heterogeneous soils from mixing, and has excellent mechanical properties so that it is not easily destroyed, it also has the function of reinforcing the ground bearing capacity of the location where the nonwoven fabric is installed, as well as water permeability. It is excellent in allowing water to pass through and also has excellent drainage properties.
대한민국 등록특허 제1776399호는 토목용 폴리에스테르 부직포 및 그 제조방법에 관한 것으로서, 폴리에스테르 중합체를 방사하고 이젝터를 통하여 필라멘트를 연신시킨 후 충돌판의 충돌에 의한 필라멘트 개섬으로 컨베이어벨트 상에 웹을 형성시켜 열압착하거나 니들펀칭에 의해 기계적 강도를 부여하며 후가공 및 칼렌더 가공에 의해 형태안정성을 부여하여 제조하는 폴리에스테르 부직포의 제조방법에 있어서, 상기 폴리에스테르 중합체에는 UV 안정제가 함유된 마스터배치가 포함된 것을 사용하고, 필라멘트 연신 후 친수제가 표면에 도포되도록 하여 제조하는 제조방법을 개시하고 있다.Republic of Korea Patent No. 1776399 relates to polyester nonwoven fabric for civil engineering and its manufacturing method. After spinning polyester polymer and stretching the filament through an ejector, the filament is opened by collision with a collision plate to form a web on a conveyor belt. In the method of manufacturing a polyester nonwoven fabric manufactured by imparting mechanical strength by heat compression or needle punching and providing dimensional stability by post-processing and calendar processing, the polyester polymer includes a masterbatch containing a UV stabilizer. A manufacturing method is disclosed in which a hydrophilic agent is applied to the surface after stretching the filament.
한편, 폴리에스테르 섬유 등의 합성섬유는 전반적으로 소수 구조로 되어 있어 흡수성이 적고 정전기 발생하는 문제가 있는 바, 지속적인 사용이 반복되는 경우에는, 토양에 의해 기공이 막히게 되어 물을 배수하지 못하고 부직포가 그대로 머금고 유지하게 되어 물에 의한 손상이 발생되거나, 부직포 하부의 토양을 무르게하는 문제가 있는 바, 이를 해결하기 위하여, 수분 흡수성이 우수하면서도, 빠르게 건조되어 지속적으로 사용이 가능한 신규한 토목용 부직포에 대한 개발이 필요한 실정이다.On the other hand, synthetic fibers such as polyester fibers have an overall hydrophobic structure, so there is a problem of low water absorption and generation of static electricity. When continuous use is repeated, the pores are blocked by soil, preventing water from draining, and the non-woven fabric There is a problem of water damage or softening of the soil under the non-woven fabric as it is kept as is. To solve this problem, a new non-woven fabric for civil engineering that has excellent moisture absorption and dries quickly so that it can be used continuously Development is needed.
본 발명은 토목용 부직포로서, 요구되는 우수한 기계적 강도, 우수한 내후성, 우수한 투수성능을 만족하는 토목용 부직포를 제공하는 것을 목적으로 한다. The purpose of the present invention is to provide a nonwoven fabric for civil engineering that satisfies the required excellent mechanical strength, excellent weather resistance, and excellent water permeability.
본 발명은 물에 대한 흡수성이 우수하면서도, 자연적으로 빠르게 건조되도록 하여, 배수 효과와 투수 효과가 장시간 유지되는 효과를 갖는 토목용 부직포를 제공하는 것을 목적으로 한다.The purpose of the present invention is to provide a nonwoven fabric for civil engineering that has excellent water absorption, dries quickly and naturally, and maintains drainage and water permeability effects for a long time.
본 발명은 또한, 수분을 흡수한 상태에서 외부의 급격한 온도 및 습도 변화에도 우수한 흡습성을 유지하는 토목용 부직포를 제공하는 것을 목적으로 한다.Another object of the present invention is to provide a nonwoven fabric for civil engineering that maintains excellent hygroscopicity despite rapid changes in external temperature and humidity while absorbing moisture.
상기와 같은 과제를 해결하기 위한, 본 발명에 따른 흡습성이 향상된 토목용 폴리에스테르 부직포의 제조방법은,In order to solve the above problems, the method for manufacturing polyester nonwoven fabric for civil engineering with improved hygroscopicity according to the present invention is,
a) 재생 폴리에스테르 100 중량부와 비재생 폴리에스테르 20 내지 50 중량부를 혼합하는 단계;a) mixing 100 parts by weight of recycled polyester and 20 to 50 parts by weight of non-recycled polyester;
b) 물 50 중량부에 구연산 1 내지 5 중량부를 용해시키는 단계;b) dissolving 1 to 5 parts by weight of citric acid in 50 parts by weight of water;
c) 상기 b) 단계의 용액에 미세 다공성 규조토 분말 10 내지 20 중량부를 침지시킨 후, 탄산 칼슘을 상기 구연산의 1/10 몰 비율으로 첨가하는 단계;c) immersing 10 to 20 parts by weight of microporous diatomaceous earth powder in the solution of step b) and then adding calcium carbonate at a molar ratio of 1/10 of the citric acid;
d) 상기 c)의 용액을 여과하여 미세 다공성 규조토 분말을 수득하고 세척한 후 건조하는 단계;d) filtering the solution of c) to obtain microporous diatomaceous earth powder, washing it, and drying it;
e) 상기 d) 단계에서 얻어진 분말을 옥틸아크릴레이트 10 내지 20 중량부와 혼합하는 단계;e) mixing the powder obtained in step d) with 10 to 20 parts by weight of octylacrylate;
f) 상기 a) 단계의 혼합물을 용융시키며 상기 e) 단계에서 얻어진 혼합물을 첨가하는 단계;f) melting the mixture of step a) and adding the mixture obtained in step e);
g) 상기 f) 단계의 혼합 용융액을 냉각시킨 후, 다시 열을 가하여 용융 방사하여 섬유 원사를 제조하는 단계;g) cooling the mixed melt of step f) and then applying heat to melt-spun it to produce fiber yarn;
h) 상기 g) 단계의 섬유 원사를 부직포로 제조하는 단계;h) manufacturing the fiber yarn of step g) into a non-woven fabric;
를 포함한다.Includes.
구체적으로, 상기 g) 단계는 냉각된 혼합 용융액이 용융점도 100 내지 150 cPs인 상태까지 냉각시키고, 이를 다시 250 내지 300℃의 온도로 다시 용융시켜 1200~1,400m/min의 방사속도로 방사하는 것일 수 있다.Specifically, in step g), the cooled mixed melt is cooled to a melt viscosity of 100 to 150 cPs, melted again at a temperature of 250 to 300 ° C, and spun at a spinning speed of 1,200 to 1,400 m/min. You can.
본 발명에 있어서, 상기 h) 단계는, h-1) 상기 g) 단계의 섬유 원사를 오프닝하는 단계; h-2) 상기 h-1) 단계를 거친 섬유 원사를 블렌딩하하여 배출하는 호퍼링 단계; h-3) 상기 h-2) 단계를 거친 섬유 원사를 얇게 펼쳐진 웹으로 형성하는 카딩 단계; h-4) 상기 웹의 두께와 넓이를 조절하는 크로스 래핑 단계; h-5) 니들(needle)을 촘촘하게 설치한 니들 플레이트를 웹의 상부에서 상하로 반복 운동시키는 니들 펀칭 단계;를 더 포함하는 것일 수 있다.In the present invention, step h) includes the steps of h-1) opening the fiber yarn of step g); h-2) a hoppering step of blending and discharging the fiber yarn that has passed the step h-1); h-3) a carding step of forming the fiber yarn that has undergone step h-2) into a thinly spread web; h-4) a cross wrapping step of adjusting the thickness and width of the web; h-5) a needle punching step of repeatedly moving a needle plate with densely installed needles up and down on the upper part of the web; may be further included.
본 발명에 있어서, 상기 미세 다공성 규조토 분말은 100 내지 200 메쉬의 크기를 갖는 것이고, 상기 미세 다공성 규조토 분말은 평균 직경 1 내지 5 ㎛(마이크로미터)의 미세 기공을 포함하는 것일 수 있다.In the present invention, the microporous diatomaceous earth powder may have a size of 100 to 200 mesh, and the microporous diatomaceous earth powder may include fine pores with an average diameter of 1 to 5 μm (micrometer).
본 발명은 또한, 상술한 제조방법에 따라 제조된 토목용 부직포를 제공한다.The present invention also provides a nonwoven fabric for civil engineering manufactured according to the above-described manufacturing method.
본 발명에 따른 토목용 부직포는 요구되는 우수한 기계적 강도, 우수한 내후성, 우수한 투수성능을 만족하는 효과를 갖는다.The nonwoven fabric for civil engineering according to the present invention has the effect of satisfying the required excellent mechanical strength, excellent weather resistance, and excellent water permeability.
본 발명에 따른 토목용 부직포는 물에 대한 흡수성이 우수하면서도, 자연적으로 빠르게 건조되도록 하여, 배수 효과와 투수 효과가 장시간 유지되는 효과를 갖는다.The nonwoven fabric for civil engineering according to the present invention has excellent water absorption and dries naturally quickly, maintaining drainage and water permeability effects for a long time.
본 발명에 따른 토목용 부직포는 수분을 흡수한 상태에서 외부의 급격한 온도 및 습도 변화에도 우수한 흡습성을 유지하는 효과를 갖는다.The nonwoven fabric for civil engineering according to the present invention has the effect of maintaining excellent hygroscopicity even in a rapid external temperature and humidity change while absorbing moisture.
이하, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 각 구성을 보다 상세히 설명하나, 이는 하나의 예시에 불과할 뿐, 본 발명의 권리범위가 다음 내용에 의해 제한되지 아니한다.Hereinafter, each configuration of the present invention will be described in more detail so that those skilled in the art can easily implement it. However, this is only an example, and the scope of rights of the present invention is determined by the following contents. Not limited.
본 발명에 사용된 "바람직한" 또는 "바람직하게는"은 특정 조건에서 특정 장점을 갖는 본 발명의 실시예를 나타낸다. 그러나, 다른 실시예 또한 동일 조건 또는 다른 조건에서 바람직할 수 있다. 또한, 하나 이상의 바람직한 실시예는 다른 실시예가 유용하지 않다는 것을 의미하는 것은 아니며, 본 발명의 범위 내에 있는 다른 실시예를 배제하는 것도 아니다.As used herein, “preferred” or “preferably” refers to an embodiment of the invention that has certain advantages under certain conditions. However, other embodiments may also be preferred under the same or different conditions. Additionally, the identification of one or more preferred embodiments does not mean that other embodiments are not useful, nor does it exclude other embodiments that are within the scope of the invention.
본 명세서에 사용된 "포함한다"는 용어는 본 발명에 유용한 재료, 조성물, 장치, 및 방법들을 나열할 때 사용되며 그 나열된 예에 제한되는 것은 아니다.As used herein, the term “comprising” is used to list materials, compositions, devices, and methods useful in the present invention and is not limited to the listed examples.
특히, 본 발명에서 "포함한다"는 용어는 구성요소를 그대로 포함하는 상태, 구성요소를 전구물질로 하여 가공된 상태, 가공된 후에 구성요소를 만족하는 상태 등과 같이 다양한 상태를 지칭하는 것이며, 그 나열된 예에 제한되는 것은 아니다.In particular, in the present invention, the term "comprising" refers to various states, such as a state in which the component is included as is, a state in which the component is processed as a precursor, a state in which the component is satisfied after processing, etc. It is not limited to the examples listed.
본 발명은 흡습성이 개선된 토목용 부직포 및 이의 제조방법에 관한 것으로서, 토목용 부직포로서 요구되는 기계적 특성, 내후성, 투수성, 배수성 등의 기본 기능을 만족하면서도, 개선된 흡습성을 가져, 수분을 빠르게 흡수하며, 빠르게 건조하는 특성을 가져 우수한 흡습성을 장시간 동안 유지할 수 있는 효과를 갖는다.The present invention relates to a nonwoven fabric for civil engineering with improved hygroscopicity and a method of manufacturing the same. It satisfies the basic functions such as mechanical properties, weather resistance, water permeability, and drainage required for a nonwoven fabric for civil engineering, and has improved hygroscopicity, allowing moisture to be absorbed quickly. It has absorbent and fast-drying properties, allowing it to maintain excellent hygroscopicity for a long time.
구체적으로, 본 발명에 따른 토목용 부직포의 제조방법은, Specifically, the method for manufacturing nonwoven fabric for civil engineering according to the present invention is,
a) 재생 폴리에스테르 100 중량부와 비재생 폴리에스테르 20 내지 50 중량부를 혼합하는 단계;a) mixing 100 parts by weight of recycled polyester and 20 to 50 parts by weight of non-recycled polyester;
b) 물 50 중량부에 구연산 1 내지 5 중량부를 용해시키는 단계;b) dissolving 1 to 5 parts by weight of citric acid in 50 parts by weight of water;
c) 상기 b) 단계의 용액에 미세 다공성 규조토 분말 10 내지 20 중량부를 침지시킨 후, 탄산 칼슘을 상기 구연산의 1/10 몰 비율으로 첨가하는 단계;c) immersing 10 to 20 parts by weight of microporous diatomaceous earth powder in the solution of step b) and then adding calcium carbonate at a molar ratio of 1/10 of the citric acid;
d) 상기 c)의 용액을 여과하여 미세 다공성 규조토 분말을 수득하고 세척한 후 건조하는 단계;d) filtering the solution of c) to obtain microporous diatomaceous earth powder, washing it, and drying it;
e) 상기 d) 단계에서 얻어진 분말을 옥틸아크릴레이트 10 내지 20 중량부와 혼합하는 단계;e) mixing the powder obtained in step d) with 10 to 20 parts by weight of octylacrylate;
f) 상기 a) 단계의 혼합물을 용융시키며 상기 e) 단계에서 얻어진 혼합물을 첨가하는 단계;f) melting the mixture of step a) and adding the mixture obtained in step e);
g) 상기 f) 단계의 혼합 용융액을 냉각시킨 후, 다시 열을 가하여 용융 방사하여 섬유 원사를 제조하는 단계;g) cooling the mixed melt of step f) and then applying heat to melt-spun it to produce fiber yarn;
h) 상기 g) 단계의 섬유 원사를 부직포로 제조하는 단계;h) manufacturing the fiber yarn of step g) into a non-woven fabric;
를 포함한다. Includes.
이하에서는, 본 발명의 각 단계와 구성을 보다 상세히 설명한다.Below, each step and configuration of the present invention will be described in more detail.
상기 a) 단계는 폴리에스테르 원료를 혼합하는 단계로서, 재생 폴리에스테르 원료와 비재생 폴리에스테르 원료를 혼합하는 단계이다.Step a) is a step of mixing polyester raw materials, and is a step of mixing recycled polyester raw materials and non-recycled polyester raw materials.
상기 재생 폴리에스테르는 신규로 합성된 폴리에스테르 원료가 아닌, 재생 소재를 활용하여 사용된다. 이러한 재생 소재를 활용함으로써, 친환경성이 우수한 폴리에스테르 부직포를 제조할 수 있다.The recycled polyester is used using recycled materials, rather than newly synthesized polyester raw materials. By utilizing these recycled materials, polyester nonwoven fabric with excellent environmental friendliness can be manufactured.
상기 비재생 폴리에스테르는 신규 합성하여 얻어진 것으로서, 재생 폴리에스테르가 아닌 것을 의미한다. 본 발명에서는 재생 폴리에스테르의 함유량을 높게하면서도 토목용으로 적합한 물성을 만족하는 한편, 흡수성이 개선된 효과를 갖는다.The non-recycled polyester is obtained through new synthesis, meaning that it is not recycled polyester. In the present invention, while increasing the content of recycled polyester, it satisfies physical properties suitable for civil engineering purposes and has the effect of improved water absorption.
상기 함량보다 비재생 폴리에스테르의 함량이 과다한 경우에는, 친환경성이 저하되고, 제조단가가 증가하는 문제가 있다. 더욱이, 제조단가가 증가함에도 본 발명의 경우, 그 효과 측면에서는 큰 차이가 없으므로, 상기 비율로 사용함이 적합하다.If the content of non-recycled polyester is excessive than the above content, there is a problem that eco-friendliness is lowered and the manufacturing cost increases. Moreover, even though the manufacturing cost increases, in the case of the present invention, there is no significant difference in the effect, so it is suitable to use it in the above ratio.
상기 b) 단계는, 첨가제를 제조하기 위한 단계로서, 구연산에 물을 용해하여 수용액으로 제조한다. 물의 온도는 특별히 제한되지 않으나, 10 내지 20℃ 내외인 것이 바람직하다. 상기 구연산의 함량은 이보다 과다하여도 무방하나, 실제 반응에 참여하는 양에 비해 구연산이 과다하게 첨가되는 경우에는, 버려지는 재료의 양이 증가함으로 상기 함량범위로 첨가함이 바람직하고, 상기 함량보다 적은 경우에는, 후술하는 미세 다공성 규조토 분말의 미세 기공 내에 염석 반응에 의한 칼슘염 침전이 충분히 일어나지 않게 되며, 이로 인하여 기공의 내부를 채우며 다공성을 갖는 충진물이 충분히 형성되지 않게 되는 단점이 있다. 즉, 초미세 기공이 형성되기 어려운 문제가 있다.Step b) is a step for preparing an additive, and is prepared as an aqueous solution by dissolving water in citric acid. The temperature of the water is not particularly limited, but is preferably around 10 to 20°C. The content of citric acid may be more than this, but if citric acid is added excessively compared to the amount participating in the actual reaction, the amount of discarded material increases, so it is preferable to add it within the above content range, and more than the above content. In small cases, calcium salt precipitation by salting-out reaction does not sufficiently occur within the micropores of the microporous diatomaceous earth powder, which will be described later, and as a result, there is a disadvantage in that a porous filler that fills the inside of the pores is not sufficiently formed. In other words, there is a problem that it is difficult to form ultrafine pores.
c) 단계는 상기 b) 단계의 수용액에 미세 다공성 규조토 분말 10 내지 20 중량부를 침지시키는 단계로서, 상기 미세 다공성 규조토 분말은 50 내지 100 메쉬의 크기를 갖는 것이고, 상기 미세 다공성 규조토 분말은 평균 직경 10 내지 12 ㎛(마이크로미터)의 미세 기공을 포함하는 것일 수 있다.Step c) is a step of immersing 10 to 20 parts by weight of microporous diatomaceous earth powder in the aqueous solution of step b), wherein the microporous diatomaceous earth powder has a size of 50 to 100 mesh, and the microporous diatomaceous earth powder has an average diameter of 10. It may contain micropores of between 12 ㎛ (micrometer).
앞서 설명한 구연산 수용액에 침지시키는 과정을 통해 상기 기공 내부로 구연산 수용액이 침투되고 후이어지는 탄산 칼슘의 첨가 반응에 의하여 칼슘염 침전이 기공 내에 형성된다.Through the process of immersing in the citric acid aqueous solution described above, the citric acid aqueous solution penetrates into the pores, and calcium salt precipitates are formed within the pores by the subsequent addition reaction of calcium carbonate.
상기 침전물은 조습성을 가지면서도, 구연산의 함량이 높지 않아 성겁고, 초미세 기공을 포함하는 형태로 기공 내부에 침전물을 형성함에 따라, 최종적으로 형성되는 폴리에스테르 섬유 원사 자체의 흡습성을 갖게 한다.The precipitate has moisture control properties, but is coarse due to its low citric acid content, and forms a precipitate inside the pores in the form of ultrafine pores, thereby making the polyester fiber yarn itself hygroscopic.
초미세 기공은 물을 흡수하였다가 공기 중으로 물 분자를 재방출할 수 있도록 물 분자를 나누어 초미세 기공 내에 저장하므로, 물의 흡수가 빠르면서도 공기 중으로 물 분자의 증발과 방출이 빠르게 일어나게 된다.Ultrafine pores divide water molecules and store them within the ultrafine pores so that water can be absorbed and then re-released into the air, so water is absorbed quickly and evaporation and release of water molecules into the air occur quickly.
이 때, 상기 탄산 칼슘의 함량은 구연산의 1/10의 몰 비율로 첨가된다. 즉, 몰비율을 기준으로 구연산 10 몰이 첨가된 경우에는, 탄산칼슘은 1몰의 비율로 첨가될 수 있다.At this time, the content of calcium carbonate is added at a molar ratio of 1/10 of citric acid. That is, when 10 moles of citric acid are added based on the molar ratio, calcium carbonate can be added at a ratio of 1 mole.
상기 c) 단계 후에는 반응 후의 미세 다공성 규조토 분말을 수득하여, 세척한 후, 건조하여 초미세 기공이 형성된 미세 다공성 규조토 분말을 얻는다.After step c), the reacted microporous diatomaceous earth powder is obtained, washed, and dried to obtain microporous diatomaceous earth powder with ultrafine pores formed.
이어서 e) 단계에서 상기 분말을 옥틸아크릴레이트 10 내지 20 중량부와 혼합하여 폴리머 혼합물의 형태로 제조하고, 이를 a) 단계에서 제조한 혼합물을 용융시키는 과정 중에 첨가하여 균일하게 혼합될 수 있도록 섞는다. 용융과정 중에 혼합됨으로써, 용융액 전체에서 균일하게 혼합될 수 있도록 한다.Then, in step e), the powder is mixed with 10 to 20 parts by weight of octylacrylate to form a polymer mixture, and this is added during the process of melting the mixture prepared in step a) and mixed so that it is uniformly mixed. By mixing during the melting process, it ensures uniform mixing throughout the melt.
이어서, 상기 용융액은 g) 단계에서 냉각시킨 후, 다시 열을 가하여 용융 방사함으로써 섬유 원사로 제조하게 되는데, 구체적으로, 용융점도 100 내지 150 cPs인 상태까지 냉각시키고, 이를 다시 250 내지 300℃의 온도로 다시 용융시켜 1200~1,400m/min의 방사속도로 방사한다.Subsequently, the melt is cooled in step g), and then heated again to produce fiber yarn by melt spinning. Specifically, it is cooled to a melt viscosity of 100 to 150 cPs, and then again heated to a temperature of 250 to 300°C. It is melted again and spun at a spinning speed of 1,200 to 1,400 m/min.
상기 용융점도를 제한하는 이유는, 폴리에스테르 용융액이 상기 초미세 기공이 형성된 미세 다공성 규조토 분말의 초미세 기공을 막는 것을 방지하기 위한 과정으로, 더 용융되어 점도가 낮아지지 않도록 제한한다.The reason for limiting the melt viscosity is to prevent the polyester melt from clogging the ultrafine pores of the microporous diatomaceous earth powder in which the ultrafine pores are formed, and to prevent further melting and lowering of the viscosity.
이 상태에서 냉각을 멈춘 후, 용융방사기로 방사하여 섬유 원사를 제조한다.After cooling is stopped in this state, fiber yarn is manufactured by spinning with a melt spinning machine.
제조된 섬유 원사는 h) 단계에서 부직포로 제조된다.The produced fiber yarn is made into a non-woven fabric in step h).
구체적으로는, h-1) 상기 g) 단계의 섬유 원사를 오프닝하는 단계, h-2) 상기 h-1) 단계를 거친 섬유 원사를 블렌딩하하여 배출하는 호퍼링 단계, h-3) 상기 h-2) 단계를 거친 섬유 원사를 얇게 펼쳐진 웹으로 형성하는 카딩 단계, h-4) 상기 웹의 두께와 넓이를 조절하는 크로스 래핑 단계, h-5) 니들(needle)을 촘촘하게 설치한 니들 플레이트를 웹의 상부에서 상하로 반복 운동시키는 니들 펀칭 단계를 더 포함하여 3차원 조직을 포함하는 부직포로 제조된다.Specifically, h-1) opening the fiber yarn of step g), h-2) hoppering step of blending and discharging the fiber yarn that has passed step h-1), h-3) step of h-3) -2) a carding step of forming the processed fiber yarn into a thinly spread web, h-4) a cross wrapping step of controlling the thickness and width of the web, h-5) a needle plate on which needles are installed closely. It is manufactured as a non-woven fabric containing a three-dimensional structure by further including a needle punching step of repeatedly moving up and down on the top of the web.
니들펀칭 부직포는 섬유 간 화학적인 접착이 아닌 평행화된 섬유의 마찰저항과 니들링 공정에서 수직 방향으로 배열된 섬유 엉킴에 의해 강도가 좌우된다. 니들펀칭 부직포의 강도와 물성 향상을 부여하기 위해 대부분 후가공처리를 한다. The strength of needle-punched nonwoven fabrics is determined not by chemical adhesion between fibers, but by the frictional resistance of parallelized fibers and the entanglement of fibers arranged in the vertical direction during the needling process. Most needle-punched nonwoven fabrics undergo post-processing to improve their strength and properties.
부직포의 투과성에 많은 영향을 미치는 것은 직물의 단위면적당 중량이지만 니들펀칭 부직포에서는 제조공정 중 니들링에 의해 웹의 밀도와 두께에 따라 변하게 된다. 니들펀칭 부직포의 구조와 물성은 원료섬유 특성과 카딩(carding)에서 웹 제조 조건, 니들펀칭에서 침포의 종류 및 공정 인자에 따라 제조된 부직포에서 현저한 차이를 나타내므로 토목용 부직포로서 필요에 따라 각 목적에 적합한 수준으로 가공하는 것이 바람직하다.What greatly affects the permeability of nonwoven fabrics is the weight per unit area of the fabric, but in needle-punched nonwoven fabrics, this changes depending on the density and thickness of the web due to needling during the manufacturing process. The structure and physical properties of needle-punched non-woven fabrics show significant differences in the non-woven fabrics produced depending on the raw material fiber characteristics, web manufacturing conditions in carding, type of needle punching fabric, and process factors, so they are used as civil engineering non-woven fabrics for each purpose as needed. It is desirable to process it to a level suitable for it.
상기 섬유 원사를 가공하는 h) 단계의 공정은 부직포 제조기술에 관한 종래기술을 참고할 수 있다.The process of step h) of processing the fiber yarn may refer to prior art regarding nonwoven fabric manufacturing technology.
이하, 본 발명의 실시예를 기초로 보다 상세히 설명하나 이는 본 발명의 이해를 위한 하나의 예시적인 기재에 불과한 것일 뿐, 본 발명의 권리범위가 다음의 실시예로 한정되거나 제한되지 아니한다.Hereinafter, the present invention will be described in more detail based on examples, but this is only an exemplary description for understanding the present invention, and the scope of the present invention is not limited or restricted to the following examples.
<실시예 1><Example 1>
a) 재생 폴리에스테르 100 중량부와 비재생 폴리에스테르 30 중량부를 혼합하였다.a) 100 parts by weight of recycled polyester and 30 parts by weight of non-recycled polyester were mixed.
b) 물 50 중량부에 구연산 3 중량부를 용해시켰다.b) 3 parts by weight of citric acid were dissolved in 50 parts by weight of water.
c) 상기 b) 단계의 용액에 미세 다공성 규조토 분말 12 중량부를 침지시킨 후, 탄산 칼슘을 상기 구연산의 1/10 몰 비율으로 첨가하였다.c) After 12 parts by weight of microporous diatomaceous earth powder was immersed in the solution of step b), calcium carbonate was added at a molar ratio of 1/10 of the citric acid.
d) 상기 c)의 용액을 여과하여 미세 다공성 규조토 분말을 수득하고 세척한 후 건조하였다.d) The solution in c) was filtered to obtain microporous diatomaceous earth powder, which was washed and dried.
e) 상기 d) 단계에서 얻어진 분말을 옥틸아크릴레이트 13 중량부와 혼합하였다.e) The powder obtained in step d) was mixed with 13 parts by weight of octylacrylate.
f) 상기 a) 단계의 혼합물을 용융시키며 상기 e) 단계에서 얻어진 혼합물을 첨가하였다.f) The mixture obtained in step a) was melted and the mixture obtained in step e) was added.
g) 상기 f) 단계의 혼합 용융액을 냉각시킨 후, 용융점도 100 cPs인 상태까지 냉각시키고, 이를 다시 300℃의 온도로 다시 용융시켜 1,250m/min의 방사속도로 방사하여 섬유 원사를 제조하였다.g) After cooling the mixed melt in step f), it was cooled to a melt viscosity of 100 cPs, and then melted again at a temperature of 300° C. and spun at a spinning speed of 1,250 m/min to prepare a fiber yarn.
h) 상기 g) 단계의 섬유 원사를 폭 0.9m 150g/m3 중량의 부직포로 제작하였다.h) The fiber yarn of step g) above was made into a nonwoven fabric with a width of 0.9 m and a weight of 150 g/m 3 .
<비교예 1><Comparative Example 1>
상기 실시예 1에서, 섬유 원사를 재생폴리에스테르 100 중량부와 비재생 폴리에스테르 30 중량부 및 미가공된 미세 다공성 규조토 분말 12 중량부와 혼합하여 제조한 것을 제외하고는 실시예 1과 동일한 방법으로 제조하였다.Produced in the same manner as Example 1, except that the fiber yarn was mixed with 100 parts by weight of recycled polyester, 30 parts by weight of non-recycled polyester, and 12 parts by weight of unprocessed microporous diatomaceous earth powder. did.
<비교예 2><Comparative Example 2>
시중의 재생 폴리에스테르 토목용 부직포를 준비하였다.A commercially available recycled polyester nonwoven fabric for civil engineering was prepared.
<비교예 3><Comparative Example 3>
상기 실시예 1에서, g) 단계를 수행하는 대신, 혼합 용융액을 그대로 300℃의 온도로 용융시켜 1,250m/min의 방사속도로 방사한 것을 제외하고는 실시예 1과 동일한 방법으로 제조하였다.In Example 1, instead of performing step g), the mixed melt was melted as is at a temperature of 300°C and spun at a spinning speed of 1,250 m/min.
[실험방법][Experimental method]
1. 인장강도 및 신도1. Tensile strength and elongation
KS K 2630:2018에 의해 인장강도 및 연신율을 측정하였다.Tensile strength and elongation were measured according to KS K 2630:2018.
2. 흡습성 평가2. Hygroscopicity evaluation
각 부직포 시편을 50*50cm로 자른 후, 면적 60*60cm인 수조에 물을 1cm 높이로 채워넣고 부직포 시편을 넣었다.After cutting each nonwoven fabric specimen into 50*50cm, water was filled to a height of 1cm in a water tank with an area of 60*60cm, and the nonwoven fabric specimen was placed there.
시편을 꺼내어 수조 내 잔류하는 물의 양에 따라 다음과 같이 평가하였다.The specimen was taken out and evaluated as follows according to the amount of water remaining in the water tank.
(◎: 수조 내 물이 거의 남지 않음, ○: 수조 전체에 물이 잔류함, △: 0.5cm 이하의 높이로 물이 잔류함, ×0.5~1cm 미만의 높이로 물이 잔류함).(◎: almost no water remains in the tank, ○: water remains throughout the tank, △: water remains at a height of less than 0.5 cm, water remains at a height of less than ×0.5 to 1 cm).
3. 흡습 효과 유지 평가3. Evaluation of maintenance of moisture absorption effect
상기 2.의 시편을 꺼내어 30분간 물이 빠지기 좋게 널어두었다가 상기 2.의 실험을 반복하였다.The specimen of 2 above was taken out and left hanging for 30 minutes to allow water to drain, and then the experiment of 2 above was repeated.
상기 표 1을 참고하면, 실시예 1와 비교예 2 및 3 모두 인장강도와 인장신도가 모두 우수함을 확인할 수 있다.Referring to Table 1 above, it can be seen that both Example 1 and Comparative Examples 2 and 3 have excellent tensile strength and tensile elongation.
다만, 비교예 2와 3의 경우에는, 흡습성과 흡습 유지효과가 떨어짐을 확인할 수 있는 바, 본 발명에 따른 토목용 부직포는 기계적 특성을 만족하면서도, 흡습성과 흡습 유지 효과가 우수함을 확인할 수 있다.However, in the case of Comparative Examples 2 and 3, it can be confirmed that the hygroscopicity and moisture absorption retention effect are poor, and it can be confirmed that the nonwoven fabric for civil engineering according to the present invention satisfies the mechanical properties and is excellent in hygroscopicity and moisture absorption retention effect.
Claims (5)
a) 재생 폴리에스테르 100 중량부와 비재생 폴리에스테르 20 내지 50 중량부를 혼합하는 단계;
b) 물 50 중량부에 구연산 1 내지 5 중량부를 용해시키는 단계;
c) 상기 b) 단계의 용액에 미세 다공성 규조토 분말 10 내지 20 중량부를 침지시킨 후, 탄산 칼슘을 상기 구연산의 1/10 몰 비율으로 첨가하는 단계;
d) 상기 c)의 용액을 여과하여 미세 다공성 규조토 분말을 수득하고 세척한 후 건조하는 단계;
e) 상기 d) 단계에서 얻어진 분말을 옥틸아크릴레이트 10 내지 20 중량부와 혼합하는 단계;
f) 상기 a) 단계의 혼합물을 용융시키며 상기 e) 단계에서 얻어진 혼합물을 첨가하는 단계;
g) 상기 f) 단계의 혼합 용융액을 냉각시킨 후, 다시 열을 가하여 용융 방사하여 섬유 원사를 제조하는 단계;
h) 상기 g) 단계의 섬유 원사를 부직포로 제조하는 단계;
를 포함하는 토목용 부직포의 제조방법.A method for manufacturing polyester nonwoven fabric for civil engineering with improved hygroscopicity,
a) mixing 100 parts by weight of recycled polyester and 20 to 50 parts by weight of non-recycled polyester;
b) dissolving 1 to 5 parts by weight of citric acid in 50 parts by weight of water;
c) immersing 10 to 20 parts by weight of microporous diatomaceous earth powder in the solution of step b) and then adding calcium carbonate at a molar ratio of 1/10 of the citric acid;
d) filtering the solution of c) to obtain microporous diatomaceous earth powder, washing it, and drying it;
e) mixing the powder obtained in step d) with 10 to 20 parts by weight of octylacrylate;
f) melting the mixture of step a) and adding the mixture obtained in step e);
g) cooling the mixed melt of step f) and then applying heat to melt-spun it to produce fiber yarn;
h) manufacturing the fiber yarn of step g) into a non-woven fabric;
A method of manufacturing a nonwoven fabric for civil engineering comprising a.
상기 g) 단계는 냉각된 혼합 용융액이 용융점도 100 내지 150 cPs인 상태까지 냉각시키고, 이를 다시 250 내지 300℃의 온도로 다시 용융시켜 1200~1,400m/min의 방사속도로 방사하는 것인, 토목용 부직포의 제조방법.
According to paragraph 1,
In step g), the cooled mixed melt is cooled to a melt viscosity of 100 to 150 cPs, melted again at a temperature of 250 to 300 ° C, and spun at a spinning speed of 1200 to 1,400 m / min. Manufacturing method of nonwoven fabric.
상기 h) 단계는,
h-1) 상기 g) 단계의 섬유 원사를 오프닝하는 단계;
h-2) 상기 h-1) 단계를 거친 섬유 원사를 블렌딩하하여 배출하는 호퍼링 단계;
h-3) 상기 h-2) 단계를 거친 섬유 원사를 얇게 펼쳐진 웹으로 형성하는 카딩 단계;
h-4) 상기 웹의 두께와 넓이를 조절하는 크로스 래핑 단계;
h-5) 니들(needle)을 촘촘하게 설치한 니들 플레이트를 웹의 상부에서 상하로 반복 운동시키는 니들 펀칭 단계;
를 더 포함하는 것인, 토목용 부직포의 제조방법.
According to paragraph 1,
In step h),
h-1) opening the fiber yarn of step g);
h-2) a hoppering step of blending and discharging the fiber yarn that has passed the step h-1);
h-3) a carding step of forming the fiber yarn that has undergone step h-2) into a thinly spread web;
h-4) a cross wrapping step of adjusting the thickness and width of the web;
h-5) a needle punching step of repeatedly moving a needle plate with densely installed needles up and down on the upper part of the web;
A method of manufacturing a nonwoven fabric for civil engineering, further comprising:
상기 미세 다공성 규조토 분말은 50 내지 100 메쉬의 크기를 갖는 것이고,
상기 미세 다공성 규조토 분말은 평균 직경 10 내지 12 ㎛(마이크로미터)의 미세 기공을 포함하는 것을 특징으로 하는 토목용 부직포의 제조방법.
According to paragraph 1,
The microporous diatomaceous earth powder has a size of 50 to 100 mesh,
A method of producing a nonwoven fabric for civil engineering, characterized in that the microporous diatomaceous earth powder contains micropores with an average diameter of 10 to 12 ㎛ (micrometers).
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JP2003020522A (en) * | 2001-07-11 | 2003-01-24 | Toray Ind Inc | Moisture conditioning conjugated fiber |
KR100744454B1 (en) * | 2005-11-10 | 2007-08-01 | 길한산업 주식회사 | Fabrication method for regenerated non-woven fober of engineering works |
KR20100129987A (en) | 2009-06-02 | 2010-12-10 | 도레이첨단소재 주식회사 | Polypropylene spunbond nonwoven fabric and the preparing process thereof |
KR101545288B1 (en) * | 2015-03-24 | 2015-08-19 | (주)바이오소재 | Eco friendly material pellet having good maintenance effect of freshness, and manufacturing method thereof |
KR102169080B1 (en) * | 2020-08-07 | 2020-10-22 | 주식회사 주목씨지알 | Pile yarn composition for artificial turf that is easy to reduce carbon and collect fine dust, and pile yarn made from the composition |
KR20220003409A (en) * | 2020-07-01 | 2022-01-10 | 코오롱인더스트리 주식회사 | Recycled fiber, Composite for vehicle and method for preparing the same |
-
2023
- 2023-12-29 KR KR1020230196070A patent/KR102658444B1/en active IP Right Grant
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2024
- 2024-04-12 KR KR1020240049544A patent/KR20240056690A/en active Application Filing
- 2024-04-12 KR KR1020240049543A patent/KR20240056689A/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003020522A (en) * | 2001-07-11 | 2003-01-24 | Toray Ind Inc | Moisture conditioning conjugated fiber |
KR100744454B1 (en) * | 2005-11-10 | 2007-08-01 | 길한산업 주식회사 | Fabrication method for regenerated non-woven fober of engineering works |
KR20100129987A (en) | 2009-06-02 | 2010-12-10 | 도레이첨단소재 주식회사 | Polypropylene spunbond nonwoven fabric and the preparing process thereof |
KR101545288B1 (en) * | 2015-03-24 | 2015-08-19 | (주)바이오소재 | Eco friendly material pellet having good maintenance effect of freshness, and manufacturing method thereof |
KR20220003409A (en) * | 2020-07-01 | 2022-01-10 | 코오롱인더스트리 주식회사 | Recycled fiber, Composite for vehicle and method for preparing the same |
KR102169080B1 (en) * | 2020-08-07 | 2020-10-22 | 주식회사 주목씨지알 | Pile yarn composition for artificial turf that is easy to reduce carbon and collect fine dust, and pile yarn made from the composition |
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KR20240056690A (en) | 2024-04-30 |
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