KR100206201B1 - Nylon46 fiber and the manufacture method - Google Patents

Nylon46 fiber and the manufacture method Download PDF

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Publication number
KR100206201B1
KR100206201B1 KR1019940030009A KR19940030009A KR100206201B1 KR 100206201 B1 KR100206201 B1 KR 100206201B1 KR 1019940030009 A KR1019940030009 A KR 1019940030009A KR 19940030009 A KR19940030009 A KR 19940030009A KR 100206201 B1 KR100206201 B1 KR 100206201B1
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nylon
temperature
fiber
present
relative viscosity
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KR1019940030009A
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Korean (ko)
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KR960017953A (en
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김기웅
김학묵
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구광시
주식회사코오롱
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/60Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/08Melt spinning methods
    • D01D5/084Heating filaments, threads or the like, leaving the spinnerettes
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/08Melt spinning methods
    • D01D5/088Cooling filaments, threads or the like, leaving the spinnerettes
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/08Melt spinning methods
    • D01D5/098Melt spinning methods with simultaneous stretching
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02Yarns or threads characterised by the material or by the materials from which they are made
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Artificial Filaments (AREA)

Abstract

본 발명은 분자쇄의 전반복단위 중 90 몰% 이상이 폴리테트라메틸렌아디프아미드로 이루어진 상대점도 3.5 이상의 나일론46 폴리머를 방사온도 290~310℃, 방사속도 400~700m/분의 조건으로 방사하고, 구금직하부에 내부온도 300℃ 이상, 길이 200~400mm의 가열통을 통과시킨 다음, 단열판 통과 직후 20~50℃의 냉각풍으로 0.2m/분 이하의 속도로 냉각하고, 전체 연신비율을 5.0배 이상으로 하여 연신한 다음 100~180℃의 온도로 열고정하고 귄취하는 것을 특징으로 하는 나일론46 섬유 및 그의 제조방법으로서, 본 발명의 방법으로 제조된 나일론46 섬유는 특히 내마모성이 우수하여 재봉사용으로 적합하다.In the present invention, a nylon 46 polymer having a relative viscosity of 3.5 or more at least 90 mol% of the first half of the molecular chain made of polytetramethylene adipamide is spun under the conditions of spinning temperature of 290 to 310 ° C. and spinning speed of 400 to 700 m / min. After passing through a heating tube having an internal temperature of 300 ° C. or more and a length of 200 to 400 mm under the detention, immediately cooling the air at a rate of 0.2 m / min or less with a cooling wind of 20 to 50 ° C. immediately after passing through the insulation plate, and reducing the total draw ratio to 5.0. Nylon 46 fibers and a method for producing the same, characterized in that the heat is set to more than twice and then heat-set and odor at a temperature of 100 ~ 180 ℃, nylon 46 fibers produced by the method of the present invention is particularly excellent in wear resistance sewing Suitable.

Description

나일론-46 섬유 및 그의 제조방법Nylon-46 fiber and its manufacturing method

본 발명은 나일론-46 섬유에 관한 것으로, 더욱 상세하게는 내마모성이 우수하고 재봉사용으로 적합한 나일론-46 섬유 및 그 제조방법에 관한 것이다.The present invention relates to nylon-46 fibers, and more particularly, to nylon-46 fibers excellent in wear resistance and suitable for sewing use, and a method of manufacturing the same.

종래에는 나일론-66 섬유가 산업용 재봉사로 주로 사용되었으나 내마모성이 열세이므로 최근에는 나일론-46 재봉사가 많이 사용된다.Conventionally, nylon-66 fiber is mainly used as industrial sewing thread, but wear resistance is inferior, so recently, nylon-46 sewing thread is used a lot.

나일론-46 섬유를 사용하여 재봉사를 제조하는 방법으로는 일본 공개특허공보 소 61-75385호 등이 있으나 이 경우는 건열수축율이 낮아서 의류용 재봉사로는 적합하나 고속의 산업용 재봉사로는 충분한 물성의 확보가 어렵다.Japanese Unexamined Patent Publication (Kokai) No. 61-75385 is a method of manufacturing sewing thread using nylon-46 fiber, but in this case, the dry heat shrinkage rate is low, so it is suitable as a sewing thread for clothing, but secures sufficient physical properties as a high-speed industrial sewing thread. Is difficult.

또한 나일론-46 재봉사로는 일본 공개특허공보 소 61-108744호, 61-75835호 등이 있으나 이러한 방법은 방적사를 사용하므로 내마모성이 우수한 산업용 재봉사를 제조하는 데에는 한계가 있다.In addition, Japanese Unexamined Patent Publication No. 61-108744, 61-75835, and the like as the nylon-46 sewing thread, but this method uses a spinning yarn, there is a limit in producing an industrial sewing thread having excellent wear resistance.

본 발명은 이러한 종래기술의 문제점을 해결하기 위한 것으로 방사조건, 가열통의 조건, 냉각조건, 열고정온도 등을 조정하여 재봉사용으로 유용한 내마성이 우수한 나일론-46 섬유를 제공하는 데에 그 목적이 있다.The present invention is to solve the problems of the prior art to provide a nylon-46 fiber excellent in wear resistance useful for sewing by adjusting the spinning conditions, heating conditions, cooling conditions, heat setting temperature and the like. There is this.

상기한 목적을 달성한 본 발명에 의하면 상대점도 3.5 이상, 밀도 1.164~1.190 , 200면 방향의 결정크기 20~35Å, 020면 방향의 결정크기 15~30Å, 장주기 50~70Å임을 특징으로 하는 나일론-46 섬유가 제공된다.According to the present invention to achieve the above object, the relative viscosity of 3.5 or more, density 1.164 ~ 1.190, the crystal size in the 200 plane direction 20 ~ 35Å, the crystal size in the 020 plane direction 15 ~ 30Å, long period 50 ~ 70Å 46 fibers are provided.

상기한 물성을 동시에 만족하는 나일론-46 섬유는 분자쇄의 전반복단위 중 90몰% 이상이 폴리테트라메틸렌아디프아미드로 이루어진 상대점도가 3.5~4.0인 나일론-46 폴리머를 방사온도 290~310℃, 방사속도 400~700m/분의 조건으로 방사하고, 구금직하부에 내부온도 300~350℃ 이고 길이 200~400mm의 가열통을 통과시킨 다음, 단열판 통과 직후 20~50℃의 냉각풍으로 0.1~0.2m/분의 속도로 냉각하고, 전체 연신비율을 5.0~6.0배로 하여 연신한 다음 100~108℃의 온도로 열고정하고 권취하는 것을 포함하는 방법으로 제조할 수 있다.Nylon-46 fiber which satisfies the above properties at the same time is a nylon-46 polymer having a relative viscosity of 3.5 to 4.0 consisting of polytetramethylene adipamide of 90 mol% or more of the first half of the molecular chain. , Spinning under the condition of 400 ~ 700m / min, and passing the heating tube of 300 ~ 350 ℃ and 200 ~ 400mm in length under the detention immediately, and then 0.1 ~ with cooling wind of 20 ~ 50 ℃ right after passing the insulation board. Cooling at a rate of 0.2 m / min, stretching to 5.0 ~ 6.0 times the total draw ratio can be prepared by a method comprising heat-setting and winding to a temperature of 100 ~ 108 ℃.

이하, 본 발명을 보다 상세하게 설명하기로 한다.Hereinafter, the present invention will be described in more detail.

본 발명의 섬유를 제조하기 위한 원료물질로 사용되는 나일론-46 폴리머는 분사쇄의 전반복단위중 90 몰% 이상이 폴리테트라메틸렌아디프아미드로 구성된 융점이 280℃ 이상인 폴리아미드이고, 96% 황산용액중에서 측정한 상대점도가 3.5이상, 바람직하게 3.5~4.0 이다.Nylon-46 polymer, which is used as a raw material for producing the fiber of the present invention, is a polyamide having a melting point of 280 ° C. or higher composed of polytetramethylene adipamide of at least 90 mol% of the first half of the spray chain. The relative viscosity measured in the solution is at least 3.5, preferably 3.5 to 4.0.

나일론-46의 상대점도가 3.5 미만의 경우에는 방사중 체류시간이 길어져서 분해가 일어나므로 체류시간을 짧게 하고 방사온도도 올려야 하나 이 경우에도 분해가 일어나기 쉽다. 또한, 분해를 방지하기 위하여 체류시간도 짧게 하고 온도도 하향 조정하는 방법이 있으나 이 경우에는 유동성이 충분하지 못하여 방사중 압출기에서 장애가 일어나거나 구금하부에서 단사절이 일어난다. 상대점도가 3.5 이상의 경우에도 나일론-46 중합체를 290℃~310℃의 온도에서 400~700m/분의 방사속도로 용융방사하여야 원하는 물성을 얻을 수 있다.If the relative viscosity of nylon-46 is less than 3.5, the residence time during spinning is increased, so that the decomposition time should be shortened and the spinning temperature should be increased. In addition, in order to prevent decomposition, there is a method of shortening the residence time and adjusting the temperature downward, but in this case, the fluidity is not sufficient, so that a failure occurs in the spinning extruder or single cutting occurs in the lower part of the prison. Even when the relative viscosity is 3.5 or more, the nylon-46 polymer must be melt-spun at a spinning speed of 400 to 700 m / min at a temperature of 290 ° C to 310 ° C to obtain desired physical properties.

본 발명의 나일론-46 섬유는 강도가 9.0g/d 이상, 바람직하게 9.0~12.0g/d이며, 신도가 20% 이상, 바람직하게 20~30% 이고, 건열수축율은 6% 이상, 바람직하게 6~10%가 되어야 충분한 내마모성이 얻어진다.The nylon-46 fiber of the present invention has a strength of at least 9.0 g / d, preferably 9.0 to 12.0 g / d, an elongation of 20% or more, preferably 20 to 30%, and a dry heat shrinkage of 6% or more, preferably 6 It should be ˜10% to achieve sufficient wear resistance.

충분한 강도와 적당한 신도와 적당한 건열수축율에서 양호한 봉사가 되는데 필요한 내마모성이 얻어진다. 특히 산업용 봉재에서는 후직물을 고속으로 봉제하기 때문에 우수한 물성의 봉사가 필요하다.The abrasion resistance necessary for good service at sufficient strength, moderate elongation and moderate dry heat shrinkage is obtained. In particular, industrial sewing materials are required to serve excellent properties because the fabric is sewn at high speed.

또한 봉재시 많은 열이 발생하기 때문에 융점이 낮은 나일론-6와 나일론-66 보다는 융점이 높은 나일론-46이 훨씬 유리하므로 최근에는 후직이나 인조피혁 등에는 나일론-46 기능성 봉사가 많이 사용된다.In addition, since much heat is generated during sewing, nylon-46 having a higher melting point is more advantageous than nylon-6 and nylon-66 having a low melting point.

본 발명의 나일론-46 섬유는 강도가 9.0g/d 이상이 되어야 하는 바, 강도가 낮으면 충분한 작업성을 확보할 수가 없다. 또한 신도는 20% 이상이 되어야 작업성도 우수하고 본 발명이 목표로 하는 충분한 내마모성의 확보가 가능하다.The nylon-46 fiber of the present invention should have a strength of 9.0 g / d or more. If the strength is low, sufficient workability cannot be secured. In addition, the elongation must be 20% or more to ensure excellent workability and ensure sufficient wear resistance as the present invention aims.

그리고 종래의 나일론-46 봉사는 건열수축율을 3.0% 이하로 낮게 관리하여서 형태안정성을 유지하였으나, 본 발명에서는 건열수축율을 다소 높게 유지해서도 본 발명자가 목표로 하는 미세구조를 얻을 수 있다.In the conventional nylon-46 service, the dry heat shrinkage was kept low by 3.0% or less, but the shape stability was maintained. However, in the present invention, the microstructure targeted by the present invention can be obtained even though the dry heat shrinkage rate is kept somewhat high.

즉, 건열수축율을 6% 이상으로 하였을 때 미결정의 크기가 적게 되어서 상대적으로 연결고리의 수가 많아지고 균일하게 분포되어 장주기가 짧아지는 효과를 가져와서 구조가 치밀하게 되어서 내마모성이 증가하는 효과를 가져온다.In other words, when the dry heat shrinkage ratio is 6% or more, the size of the microcrystalline becomes smaller, so that the number of connection rings is relatively large and the distribution is uniformly distributed, resulting in the effect of shortening the long period, thereby increasing the wear resistance.

그러나, 건열수출율이 10%를 초과하여 너무 높을 때는 형태안정성이 나빠져서 퍼클링현상이 생긴다.However, when the dry heat export rate is too high, exceeding 10%, morphological stability deteriorates, resulting in percolling.

통상의 제조방법으로는 건열수축율이 6% 이하가 되었으나 본 발명에서는 100~180℃에서 열고정하여서 건열수축율이 6~10%인 저밀도의 나일론-46 섬유를 제조한다. 열고정온도가 100℃ 미만일 경우에는 건열수축율이 커지고 180℃를 초과할 경우에는 결정크기가 커져 내마모성이 저하되는 문제가 있다.Although the dry heat shrinkage is 6% or less by a conventional manufacturing method, the present invention heat-sets at 100 to 180 ° C. to produce low density nylon-46 fibers having a dry heat shrinkage of 6 to 10%. If the heat setting temperature is less than 100 ℃ dry heat shrinkage is large, if it exceeds 180 ℃ there is a problem that the crystal size is large, wear resistance is lowered.

특히 본 발명에서 분자쇄의 전 반복단위중 90몰% 이상이 폴리테트라메틸렌아디프아미드로 이루어져 있고, 상대점도가 3.5~4.0인 나일론-46 중합체를 용융방사하여 얻어진 강도가 9.0g/d 이상이며, 신도가 20% 이상이고, 건열수축율은 6~10%인 본 발명의 섬유는 밀도가 1.164~1.190, 200면 방향의 결정의 크기가 20~35Å, 020면 방향의 결정의 크기가 15~30Å, 장주기가 50~70Å으로서, 특히 내마모성이 우수하다.In particular, in the present invention, 90 mol% or more of all repeating units of the molecular chain is made of polytetramethyleneadipamide, and the strength obtained by melt spinning a nylon-46 polymer having a relative viscosity of 3.5 to 4.0 is 9.0 g / d or more. The fiber of the present invention having an elongation of 20% or more and a dry heat shrinkage of 6 to 10% has a density of 1.164 to 1.190 and a crystal size in the 200 plane direction of 20 to 35 mm 3 and a crystal size in the 020 plane direction of 15 to 30 mm It has a long cycle of 50 to 70 특히 and is particularly excellent in wear resistance.

이와 같은 본 발명의 저밀도의 나일론-46 섬유는 통상의 나일론-46 섬유에 비하여 결정간의 결속분자의 수가 압도적으로 많아서 마찰에 의하여 분자의 동일 길이에 있어서 동일확률로 분자쇄의 절단이 일어난다고 가정하면 저밀도의 나일론-46 섬유가 절단되지 않고 잔존하는 결정간을 연결하는 분자수가 많아진다. 따라서, 분자간의 장력이 커져서 내마모성이 우수하게 된다.Such low-density nylon-46 fibers of the present invention have a predominantly larger number of binding molecules between crystals than ordinary nylon-46 fibers, and assuming that the molecular chains are broken at the same probability in the same length of the molecule by friction. Low-density nylon-46 fibers are not cleaved and the number of molecules connecting the remaining crystals increases. Therefore, the tension between the molecules is increased, resulting in excellent wear resistance.

그러나, 섬유의 밀도, 200면 방향의 결정의 크기, 020면 방향의 결정의 크기, 장주기가 본 발명의 하한을 벗어나면 충분한 원사강력을 얻을 수가 없었고, 본 발명의 상한을 벗어난 경우는 결정화도가 높아지고 장주기가 커져서 충분한 내마모성을 얻을 수 없다.However, if the density of the fiber, the size of the crystal in the 200 plane direction, the size of the crystal in the 020 plane direction, and the long period were outside the lower limit of the present invention, sufficient yarn strength could not be obtained. The long cycle is getting bigger and not enough wear resistance is obtained.

본 발명의 나일론-46 섬유의 제조에는 용융부분의 길이가 비교적 길고 혼합이 충분히 일어나고 국지적인 발열이 없는 스크류형 압출기가 사용된다.The manufacture of the nylon-46 fiber of the present invention uses a screw-type extruder having a relatively long melted portion, sufficient mixing, and no local heat generation.

본 발명의 스크류는 스크류 출구에 혼합두(Mixing head)가 달려 있는 스크류가 좋으며, 이런 스크류를 사용하면 전단력에 의한 발열이 없고 충분한 혼합으로 내부와 벽부분의 온도차가 적어서 본 발명의 상대점도 범위내에서도 방사온도를 310℃ 이하로 낮추는 것이 가능하다.The screw of the present invention is preferably a screw having a mixing head at the screw outlet, and when such a screw is used, there is no heat generation due to shear force and the temperature difference between the inside and the wall part is small due to sufficient mixing, so that even within the relative viscosity range of the present invention. It is possible to lower the temperature to 310 ° C or lower.

저배향의 미연신사를 얻기 위하여는 가열통을 사용하여야 하며, 가열통은 불활성 기체 또는 과열수증기가 방사상으로 분사되어 가열통내의 온도를 300℃ 이상, 바람직하게 300~350℃로 유지하며 기체배기구로 배기되고, 냉각류는 냉각류 흡입구로 들어와서 필라멘트를 균일하게 냉각한 후 냉각류 배기구로 빠져 나간다.In order to obtain low-oriented undrawn yarn, a heating tube should be used, and the heating tube is sprayed radially with inert gas or superheated steam to maintain the temperature in the heating tube at 300 ° C or higher, preferably 300 to 350 ° C, The exhaust flows into the cooling flow inlet, cools the filament uniformly, and exits into the cooling flow exhaust.

또, 상부의 더운 공기가 영향을 미치지 않도록 가열통과 냉각통 사이에는 단열판이 설치된다.Moreover, a heat insulation board is provided between a heating cylinder and a cooling cylinder so that the hot air of an upper part may not be affected.

여기서 가열통의 길이는 200~400mm 가 적당한 바, 가열통의 길이가 200mm 보다 짧으면 고화점이 올라가서 모우가 심해지고, 400mm 보다 길면 고화점이 너무 내려와서 응력이 상승하여 배향도가 증가된다.In this case, the length of the heating vessel is suitable for 200 to 400 mm. If the length of the heating vessel is shorter than 200 mm, the solidification point rises and the severity increases.

본 발명의 섬유는 가열통을 통과한 후 단열판 직후에서 서냉하여 전연신배율 5.0 이상, 바람직하게 5.0~6.0배로 권취한다. 여기서 서냉이라 함은 냉각온도가 20℃ 이상 50℃이하이고, 냉각속도는 0.2m/분 이하로 유지하는 것을 말한다.After passing through a heating tube, the fiber of this invention is cooled slowly immediately after a heat insulation board, and wound up by 5.0 or more times, preferably 5.0 to 6.0 times the total draw ratio. Here, slow cooling means that the cooling temperature is 20 ° C. or more and 50 ° C. or less, and the cooling rate is maintained at 0.2 m / min or less.

본 발명의 미연신사는 장기간 공기중에 방치하면 수분을 흡수하여 구정이 성장하여 연신시에 모우를 발생하므로 직접 연신하는 것이 좋다.The unstretched yarn of the present invention absorbs moisture when left in the air for a long time, so that it is preferable to draw directly because the spherical growth grows and generates a swell during stretching.

이하, 본 발명을 실시예 및 비교예를 통하여 더욱 구체적으로 설명하겠는 바, 본 발명이 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited by the Examples.

이하에서 특성 평가방법은 다음과 같다.Hereinafter, the characteristic evaluation method is as follows.

※ 상대점도 : 96.0±0.2 중량% 황산용액중에서 중합체 농도가 10㎎/㎖가 되도록 시료를 용해시켜서 시료용액을 만든 후 25±0.5℃의 온도에서 수낙하 초수 6~7초의 오스트왈드점도계를 이용하여 용액의 상대점도를 측정하였다. 황산용액도 동일한 점도계를 이용하였으며, 시료용액과 동일한 황산 20㎖의 낙하시간을 T0로 하고 시료용액 20㎖의 낙하시간을 T1으로 할 때, 상대점도(RV) = T1/ T0이다.※ Relative Viscosity: Dissolve the sample in 96.0 ± 0.2 wt% sulfuric acid solution to make the polymer concentration 10mg / ml, and use the Ostwald Viscometer with 6 ~ 7 seconds of falling water at the temperature of 25 ± 0.5 ℃. The relative viscosity of the solution was measured. The same viscosity meter was used for sulfuric acid solution. Relative viscosity (RV) = T 1 / T 0 when the same dropping time of sulfuric acid as 20 mL was set to T 0 and the falling time of 20 mL of sample solution was set to T 1 . .

※ 강도 및 절단신도 : JIS-L1017 방법을 이용하였다.※ Strength and Elongation at Break: JIS-L1017 method was used.

인장시험기 : 저속신장형Tensile Testing Machine: Low Speed Extension Type

인 장 속 도 : 300mmTensile Speed: 300mm

시 료 길 이 : 250mmSample length: 250 mm

분 위 기 : 20℃, 65% RHAtmosphere: 20 ℃, 65% RH

※ 건열수축율 : 시료를 20℃, 65% RH 분위기하에서 24시간 이상 방치한 후 시료의 0.1g/d 에 해당하는 초하중을 달아서 측정한 시료의 길이를 L0, 초하중이 달린 상태로 150℃의 오븐에서 30분간 방치한 후 오븐에서 측정한 길이를 L로 하여 아래의 식으로 구하였다.※ dry heat shrinkage ratio: the length of a sample left to stand for 24 hours under 20 ℃, 65% RH atmosphere after strapping of early summer corresponding to 0.1g / d of the sample was measured in the sample state of the L 0, with early summer 150 ℃ After leaving in an oven for 30 minutes, the length measured in the oven was determined to be L by the following equation.

※ 밀도 및 결정의 크기 : 밀도는 비중법으로 측정하였으며 결정의 크기는 X선으로 측정하여 쉐러식으로 계산하였다.※ Density and crystal size: Density was measured by specific gravity method and crystal size was measured by X-ray.

※ 가봉성 : 절사수는 본봉미싱에서 4,000rpm, 스티치수는 15 스티치/3cm으로 데님생지를 50매 봉제하였을 때 끊어지는 회수를 나타내며, 가방매수는 데님생지를 끊어지지 않고 봉제할 수 있는 최대매수를 말한다.※ Gabon: The number of cuts is 4,000rpm at the main sewing machine and the number of stitches is 15 stitch / 3cm, which indicates the number of times broken when 50 sheets of denim dough are sewn, and the number of bags is the maximum number of stitches that can be sewn without cutting off the denim dough. Say.

※ 퍼클링성 : 통상의 방법으로 세탁 및 다림질하여 봉제품을 관찰 후 퍼클링의 정도를 표현하였다.※ Percling: After washing and ironing in the usual way, the degree of percling was expressed after observing the sewing product.

※ 내마모성 : 내마모성은 내마모성 시험기(Textile Research Journal, Vol. 59, No. 9, P495~500)를 이용하여 바늘직경은 1.27mm, 바늘간 간격은 12.7mm, 간격은 18.0mm, 바늘지지대 이동거리는 100mm, 이동회수는 1.0회전/초, 하중은 1.36g/d로 끊어질 때 까지의 회수를 측정한 것이다.※ Abrasion resistance: Wear resistance is 1.27mm in needle diameter, 12.7mm in distance between needles, 18.0mm in interval, 18.0mm in interval, and 100mm of needle support movement using abrasion resistance tester (Textile Research Journal, Vol. 59, No. 9, P495 ~ 500) , The number of movements until the break was 1.0 revolutions / sec and the load was 1.36 g / d was measured.

[실시예 1]Example 1

황산 상대점도 3.8인 나일론-46 고분자를 압출기에서 305℃로 용융하여 직경이 0.50mm인 구금으로 방사하여 210 데니어 36 필라멘트가 되도록 하였으며, 구금직하부에는 가열된 질소를 방사상으로 공급하여 분위기 온도가 300℃가 되도록 유지하였으며, 주위에는 길이가 300mm이고, 온도가 320℃인 가열통을 설치하였으며, 가열통 하부에는 냉각속도 0.1m/초, 냉각풍 온도를 30℃로 조절하여 냉각된 필라멘트를 500m/분 방사하고 5.3배로 연신후 다음 표1의 온도로 열고정한 후 물성을 조사하여 표1에 나타내었다.The nylon-46 polymer with sulfuric acid relative viscosity of 3.8 was melted at 305 ° C. in an extruder and spun into a mold having a diameter of 0.50 mm to form 210 denier 36 filaments. It was maintained at ℃, and around 300mm in length, and installed a heating vessel having a temperature of 320 ℃, the cooling filament by adjusting the cooling rate 0.1m / sec, the cooling wind temperature to 30 ℃ in the lower portion of the heating tube 500m / After spun off and stretched to 5.3 times and heat-set to the temperature of the following Table 1, the physical properties are shown in Table 1.

또, 본 시험사의 밀도를 비중법으로 조사하였으며, X선법으로 미세구조를 조사하였다. 시험이 끝난 시험사는 3합하여 본봉미싱으로 4,000rpm, 스티치수는 15스티치/3cm으로 데님생지를 50매 봉제하여 가봉성을 조사하였으며, 다림질 후에 퍼클링정도를 육안으로 관찰하였다.In addition, the density of the test yarn was investigated by specific gravity method, and the microstructure was examined by X-ray method. The tester who finished the test, sewn 50 pieces of denim dough with 4,000rpm and 15 stitches / 3cm stitching with a main sewing machine, and examined the sealability after ironing.

내마모성은 원사를 3합하여 본딩처리하고 내마모성 시험기로 내마모성을 조사하였다.The abrasion resistance was bonded by combining three yarns and examined for abrasion resistance with an abrasion resistance tester.

[비교예 1~3][Comparative Examples 1-3]

비교예1은 상대점도를, 비교예2 및 3은 열고정온도를 변경하여 실시예1과 같은 방법으로 시험하여 물성 및 봉제성을 조사하였다.Comparative Example 1 was tested in the same manner as in Example 1 by changing the relative viscosity, Comparative Examples 2 and 3 heat-setting temperature to investigate the physical properties and sewing.

상기 실시예 및 비교예에서 제조된 나일론-46 섬유의 물성을 평가하여 그 결과를 다음 표1에 나타내었다.The physical properties of the nylon-46 fibers prepared in Examples and Comparative Examples were evaluated, and the results are shown in Table 1 below.

Claims (3)

상대점도가 3.5~4.0이고, 밀도 1.164~1.190이고, 200면 방향의 결정크기 20~35Å, 020면 방향의 결정크기 15~30Å, 장주기 50~70Å임을 특징으로 하는 나일론-46 섬유.Nylon-46 fiber, characterized in that the relative viscosity is 3.5 to 4.0, the density is 1.164 ~ 1.190, the crystal size of 20 to 35 Å in the 200 plane direction, the crystal size of 15 to 30 Å in the 020 direction, 50 to 70 장 long period. 제1항에 있어서, 상기 나일론-46 섬유는 강도가 9~12g/d 이고, 신도가 20~30%이고, 하기 식으로 계산한 건열수축율이 6~10%임을 특징으로 하는 나일론-46 섬유.The nylon-46 fiber of claim 1, wherein the nylon-46 fiber has a strength of 9 to 12 g / d, an elongation of 20 to 30%, and a dry heat shrinkage ratio of 6 to 10% calculated by the following formula. (식중 L0는 0.1g/d의 하중하에서 시료길이를 나타내고, L은 180℃에서 30분간 열처리한 다음 0.1g/d의 하중하에서의 시료길이를 나타낸다.)(Wherein L 0 represents the sample length under a load of 0.1 g / d, and L represents the sample length under a load of 0.1 g / d after heat treatment at 180 ° C. for 30 minutes.) 분자쇄의 전반복단위 중 90 몰% 이상이 폴리테트라메틸렌 아프아미드로 이루어진 상대점도가 3.5~4.0인 나일론-46 폴리머를 방사온도 290~310℃, 방사속도 400~700m/분의 조건으로 방사하고, 구금직하부에 내부온도가 300~350℃이고, 길이 200~400mm의 가열통을 통과시킨 다음, 단열판 통과 직후 20~50℃의 냉각풍으로 0.1~0.2m/분의 속도로 냉각하고, 전체 연신비율을 5.0~6.0배로 하여 연신한 다음 100~180℃의 온도로 열고정하고 권취하는 것을 특징으로 하는 나일론-46 섬유의 제조방법.At least 90 mol% of the first half of the molecular chain is spun nylon-46 polymer having a relative viscosity of 3.5 to 4.0 consisting of polytetramethylene afamide under a spinning temperature of 290 to 310 ° C. and a spinning speed of 400 to 700 m / min. After passing through a heating tube with a temperature of 300 ~ 350 ℃ and a length of 200 ~ 400mm under the detention, immediately after passing through the insulation board, cool it at a rate of 0.1 ~ 0.2m / min with a cooling wind of 20 ~ 50 ℃, A stretching method of 5.0 to 6.0 times the stretching ratio, and then heat-fixed and wound to a temperature of 100 ~ 180 ℃ manufacturing method of nylon-46 fibers.
KR1019940030009A 1994-11-16 1994-11-16 Nylon46 fiber and the manufacture method KR100206201B1 (en)

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KR100335511B1 (en) * 1995-12-26 2002-11-07 주식회사 코오롱 Nylon-46 fiber and manufacturing method thereof

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KR100829484B1 (en) * 2002-03-22 2008-05-16 주식회사 코오롱 A polyamide 4.6 multi filament, and a process of preparing for the same

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Publication number Priority date Publication date Assignee Title
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