JP2015098665A - Ultra fine aramid fiber - Google Patents
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- JP2015098665A JP2015098665A JP2013239075A JP2013239075A JP2015098665A JP 2015098665 A JP2015098665 A JP 2015098665A JP 2013239075 A JP2013239075 A JP 2013239075A JP 2013239075 A JP2013239075 A JP 2013239075A JP 2015098665 A JP2015098665 A JP 2015098665A
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- 229920006231 aramid fiber Polymers 0.000 title claims abstract description 36
- 239000004760 aramid Substances 0.000 claims abstract description 10
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 229920000570 polyether Polymers 0.000 claims description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 25
- 238000009987 spinning Methods 0.000 abstract description 11
- 238000010036 direct spinning Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 26
- 239000003921 oil Substances 0.000 description 20
- 229920003366 poly(p-phenylene terephthalamide) Polymers 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 229920001410 Microfiber Polymers 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- -1 polyparaphenylene terephthalamide Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 229920001494 Technora Polymers 0.000 description 1
- 229920000561 Twaron Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000004950 technora Substances 0.000 description 1
- MHSKRLJMQQNJNC-UHFFFAOYSA-N terephthalamide Chemical compound NC(=O)C1=CC=C(C(N)=O)C=C1 MHSKRLJMQQNJNC-UHFFFAOYSA-N 0.000 description 1
- 239000004762 twaron Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Abstract
Description
本発明は、マルチフィラメントからなる極細アラミド繊維に関する。さらに詳しくは、単糸繊度が太く毛羽や断糸が少ない極細アラミド繊維に関する。 The present invention relates to an ultrafine aramid fiber composed of multifilaments. More specifically, the present invention relates to an ultrafine aramid fiber having a single yarn fineness and few fuzz and yarn breakage.
従来細繊度の糸条を効率的に生産する方法として、太繊度の多条繊維を分割して細繊度の糸条を得る「分繊」と呼ばれる方法が提案されている。しかし、分繊時に各糸条に分けて取り出そうとしても、高強度かつ高弾性率、高耐熱性といった特性を有するアラミド繊維、特にパラ系アラミド繊維は、分繊時に毛羽や断糸が発生し易いため、安定に分繊することが難しい。 Conventionally, as a method for efficiently producing a yarn having a fineness, a method called “spreading” in which a multifilament having a fineness is divided to obtain a yarn having a fineness has been proposed. However, aramid fibers, especially para-aramid fibers, which have characteristics such as high strength, high elastic modulus, and high heat resistance, cause fluff and yarn breakage at the time of splitting even if they are separated and taken out at the time of splitting. Because it is easy, it is difficult to separate the fibers stably.
そこで、特許文献１には、分繊時における毛羽の発生が無く強度低下が生じないアラミド繊維として、油剤を付着させ、かつ交絡数を５〜６０個／ｍの範囲に限定した糸条が提案されている。この方法によれば、通常のアラミド繊維よりも細繊度（総繊度２２０ｄｔｅｘ）の糸条は得られるものの、本発明が目指している領域から見ると満足できる細繊度とは言えない。 Therefore, Patent Document 1 proposes a yarn in which an oil agent is attached and the number of entanglements is limited to a range of 5 to 60 / m as an aramid fiber that does not generate fluff during splitting and does not cause a decrease in strength. Has been. According to this method, although a yarn having a fineness (total fineness of 220 dtex) can be obtained as compared with a normal aramid fiber, it cannot be said that the fineness is satisfactory from the viewpoint of the present invention.
また、上記の特性を有するアラミド繊維、特にパラ系アラミド繊維は、製糸工程及び撚糸工程でガイドやロールから摩擦抵抗を受けることによって、毛羽や断糸が発生する問題点を有しており、結果として、強度が低いアラミド繊維が製造されることとなる。 In addition, aramid fibers having the above characteristics, particularly para-aramid fibers, have a problem that fluff and yarn breakage occur due to frictional resistance from guides and rolls in the yarn making process and the twisting process. As a result, an aramid fiber having low strength is produced.
本発明は、かかる従来技術の背景に鑑み、製糸工程及び撚糸工程における毛羽や断糸の発生が少なく、製糸及び撚糸工程通過性が良好な極細アラミド繊維を提供することを課題とする。 In view of the background of such conventional technology, an object of the present invention is to provide an ultrafine aramid fiber that is less likely to generate fuzz and breakage in the yarn making process and the twisting process, and has good passability in the yarn making and twisting process.
本発明は、単糸繊度３．５〜１０ｄｔｅｘの単糸を用いて総繊度を細くすることにより、上記課題を効率的に解決できるとの知見に基づいてなされたのである。 The present invention has been made based on the knowledge that the above problem can be solved efficiently by reducing the total fineness using single yarns having a single yarn fineness of 3.5 to 10 dtex.
すなわち、本発明は、単糸繊度が３．５〜１０ｄｔｅｘであり、かつ総繊度が１０〜１００ｄｔｅｘであり、かつ油剤が０．３〜５．０％付着しているアラミドマルチフィラメントであることを特徴とする極細アラミド繊維を提供する。 That is, the present invention is an aramid multifilament having a single yarn fineness of 3.5 to 10 dtex, a total fineness of 10 to 100 dtex, and an oil agent attached to 0.3 to 5.0%. The ultrafine aramid fiber is provided.
本発明のアラミド繊維は、細繊度の極細繊維でありながら単糸繊度が大きく、そのため破断強力が向上することによって単糸切れが抑制され、効率よく生産することができる。また、フィラメント数が少ないことで、糸条とガイドやロールとの接地面積が減少するため、糸条が受ける摩擦抵抗が低減されることで、製糸工程及び撚糸工程における毛羽の発生が抑制される。 The aramid fiber of the present invention has a high single yarn fineness even though it is an ultrafine fiber with a fineness. Therefore, the breaking strength is improved, so that the single yarn breakage is suppressed, and it can be produced efficiently. Moreover, since the contact area between the yarn and the guide or roll is reduced due to the small number of filaments, the frictional resistance received by the yarn is reduced, thereby suppressing the occurrence of fluff in the yarn making process and the twisting process. .
以下、本発明について詳細を説明する。 Hereinafter, the present invention will be described in detail.
本発明におけるアラミド繊維は、パラ系アラミド繊維又はメタ系アラミド繊維である。パラ系アラミド繊維としては、ポリパラフェニレンテレフタルアミド（東レ・デュポン社製「ケブラー」、テイジンアラミド・ビー・ブイ社製「トワロン」）、コポリパラフェニレン−３，４’−ジフェニルエーテルテレフタルアミド（帝人テクノプロダクツ社製「テクノーラ」）等がある。メタ系アラミド繊維としては、ポリメタフェニレンイソフタルアミド（デュポン社製「ノーメックス」、帝人テクノプロダクツ社製「コーネックス」等がある。 The aramid fiber in the present invention is a para-aramid fiber or a meta-aramid fiber. Examples of the para-aramid fiber include polyparaphenylene terephthalamide (“Kevlar” manufactured by Toray DuPont, “Twaron” manufactured by Teijin Aramid BB Co.), copolyparaphenylene-3,4′-diphenyl ether terephthalamide (Teijin Techno) Products "Technora"). Examples of the meta-aramid fiber include polymetaphenylene isophthalamide (“NOMEX” manufactured by DuPont, “CONEX” manufactured by Teijin Techno Products).
本発明におけるアラミド繊維としては、高強度、高弾性率、耐熱性に優れるパラ系アラミド繊維が好ましく、特に、耐切創性に優れるポリパラフェニレンテレフタルアミド（以下、「ＰＰＴＡ」と称する。）が好ましい。ＰＰＴＡは、テレフタル酸とパラフェニレンジアミンを重縮合して得られる重合体であり、少量のジカルボン酸及びジアミンを共重合したものも使用することができる。 As the aramid fiber in the present invention, a para-aramid fiber excellent in high strength, high elastic modulus and heat resistance is preferable, and polyparaphenylene terephthalamide (hereinafter referred to as “PPTA”) excellent in cut resistance is particularly preferable. . PPTA is a polymer obtained by polycondensation of terephthalic acid and paraphenylenediamine, and a copolymer obtained by copolymerizing a small amount of dicarboxylic acid and diamine can also be used.
本発明のアラミド繊維における単糸繊度は、３．５〜１０ｄｔｅｘ、好ましくは４．０〜８．０ｄｔｅｘとするのが適当である。単糸繊度が３．５ｄｔｅｘ未満の場合には、単糸強力が弱く、特に油剤を付与する以前の工程中にあるロールやガイドから受ける摩擦抵抗により単糸切れを引き起こしやすくなるので好ましくない。一方、単糸繊度が１０ｄｔｅｘを超える場合には、紡出時の脱硫酸効率が著しく低下するため、生産性が著しく低下する原因となるので好ましくない。 The single yarn fineness in the aramid fiber of the present invention is suitably 3.5 to 10 dtex, preferably 4.0 to 8.0 dtex. When the single yarn fineness is less than 3.5 dtex, the single yarn strength is weak, and it is not preferable because the single yarn breakage is likely to be caused by the frictional resistance received from the roll or guide in the process before applying the oil agent. On the other hand, when the single yarn fineness exceeds 10 dtex, the desulfurization efficiency at the time of spinning is remarkably lowered, and this is not preferable because the productivity is remarkably lowered.
本発明のアラミド繊維の総繊度は、１０〜１００ｄｔｅｘの範囲であり、好ましくは２０〜１００ｄｔｅｘ、より好ましくは３０〜１００ｄｔｅｘの範囲である。総繊度が１０未満の場合には、紡糸におけるポリマー吐出量が過剰に少なくなり安定した吐出状態を保つことが難しくなるため、アラミド繊維を安定に生産することが難しくなる。一方、総繊度が１００を超える場合には、ロール・ガイドとの接触面積が増大し摩擦係数が高くなることで、毛羽や単糸切れを起こしやすくなる。 The total fineness of the aramid fiber of the present invention is in the range of 10 to 100 dtex, preferably 20 to 100 dtex, more preferably 30 to 100 dtex. When the total fineness is less than 10, the polymer discharge amount in spinning becomes excessively small, and it becomes difficult to maintain a stable discharge state, so that it is difficult to stably produce aramid fibers. On the other hand, when the total fineness exceeds 100, the contact area with the roll guide increases and the coefficient of friction increases, so that fluff and single yarn breakage are likely to occur.
アラミド繊維を構成するフィラメント数は２〜２８本である。例えば、５ｄｔｅｘの単糸を２０本程度束ねることによって、総繊度が１００ｄｔｅｘとなる。 The number of filaments constituting the aramid fiber is 2 to 28. For example, by bundling about 20 5 dtex single yarns, the total fineness becomes 100 dtex.
アラミド繊維の単糸の引張強度は、１５ｃＮ／ｄｔｅｘ以上であることが好ましく、より好ましくは１８ｃＮ／ｄｔｅｘ以上、特に好ましくは２１ｃＮ／ｄｔｅｘ以上である。１５ｃＮ／ｄｔｅｘ以上あれば、高強力繊維としての機能を充分発揮できるからである。この点からはパラ系アラミド繊維が望ましい。 The tensile strength of the single yarn of aramid fiber is preferably 15 cN / dtex or more, more preferably 18 cN / dtex or more, and particularly preferably 21 cN / dtex or more. This is because if it is 15 cN / dtex or more, the function as a high-strength fiber can be sufficiently exhibited. From this point, a para-aramid fiber is desirable.
本発明のアラミド繊維を得る方法には２通りあり、いずれの方法を適用しても良い。第１は、所望の紡糸口金から紡出した単糸繊度３．５〜１０ｄｔｅｘの単糸を、総繊度が１０〜１００ｄｔｅｘになるよう集束し、マルチフィラメントを直接得る方法である。 There are two methods for obtaining the aramid fiber of the present invention, and either method may be applied. The first is a method of directly obtaining a multifilament by converging single yarns having a single yarn fineness of 3.5 to 10 dtex spun from a desired spinneret so that the total fineness becomes 10 to 100 dtex.
第２は、所望の紡糸口金から紡出した単糸繊度３．５〜１０ｄｔｅｘの単糸を適宜な大きさの繊維束としたマルチフィラメントを従来公知の分繊機にて適宜分割して得る方法である。 The second is a method of obtaining a multifilament in which a single yarn having a single yarn fineness of 3.5 to 10 dtex spun from a desired spinneret and having a fiber bundle of an appropriate size is appropriately divided by a conventionally known splitting machine. is there.
ＰＰＴＡ繊維の場合は、ＰＰＴＡを濃硫酸に溶解した濃度１８〜２０重量％の粘調な溶液を、直径０．０５ｍｍ〜０．１ｍｍの吐出孔を環状に配置した口金から、せん断速度２５，０００〜５０，０００ｓｅｃ−１で吐出させ、わずかの間空気中に紡出後、水中へ紡糸し、紡糸浴中で凝固した繊維を水酸化ナトリウム水溶液で中和処理した後、１００〜３００℃で５〜１２０秒間、熱処理を行い、水分率２０％以下とすることで、製造することができる。紡糸工程通過時の張力を常に高張力に保つことで、繊維の交絡を抑制し、容易かつ安定的に分繊可能なアラミド繊維を製造することができる。 In the case of PPTA fiber, a viscous solution having a concentration of 18 to 20% by weight obtained by dissolving PPTA in concentrated sulfuric acid is applied to a shear rate of 25,000 from a die having annular discharge holes having a diameter of 0.05 mm to 0.1 mm. After discharging at ˜50,000 sec −1 and spinning in the air for a short time, spinning into water and neutralizing the fiber coagulated in the spinning bath with an aqueous sodium hydroxide solution, 5 at 100 to 300 ° C. It can manufacture by heat-processing for -120 second and making it moisture content 20% or less. By maintaining the tension at the time of passing through the spinning process at a high tension at all times, it is possible to suppress the entanglement of the fibers and to produce an aramid fiber that can be easily and stably separated.
そして、熱処理後の繊維は、一旦ボビンに巻き上げられた後、ボビンから巻き出されて、捲縮、撚糸等の加工処理が施され加工糸となる。繊維の捲縮処理、撚糸処理は従来公知の方法で行うことができる。 The heat-treated fiber is once wound on a bobbin and then unwound from the bobbin and subjected to processing such as crimping and twisting to become a processed yarn. The crimping treatment and twisting treatment of the fiber can be performed by a conventionally known method.
ＰＰＴＡ繊維に対する油剤の付与は、紡糸工程中、１度でも複数回に分けて実施しても良い。複数回に分けて行う場合は、有効成分量が低い油剤を付与した後、有効成分量が高い油剤を付与することが好ましい。 The application of the oil agent to the PPTA fiber may be carried out once or divided into a plurality of times during the spinning process. When performing by dividing into multiple times, it is preferable to apply an oil agent having a high active ingredient amount after applying an oil agent having a low active ingredient amount.
油剤の付着量は、水分量を０％に換算したアラミド繊維重量に対して、０．３〜５．０重量％が好ましく、より好ましくは０．５〜３．０重量％が適当である。油剤付着量が０．３重量％未満の場合には、油剤機能である制電性、平滑性が十分に発揮されなくなり、ロール・ガイドとの摩擦係数が高くなることで、製糸工程及び加工工程での毛羽や単糸切れ発生等の操業不調を引き起こすため好ましくない。一方、油剤付着量が５．０重量％を超える場合には、繊維表面に付着した余剰油剤がロール・ガイドと接触した際に脱落し、製糸工程及び加工工程でのスカム増加による操業不調を引き起こすため好ましくない。 The adhesion amount of the oil agent is preferably 0.3 to 5.0% by weight, more preferably 0.5 to 3.0% by weight, based on the weight of the aramid fiber with the water content converted to 0%. When the amount of the oil agent is less than 0.3% by weight, the antistatic property and smoothness which are oil agent functions are not sufficiently exhibited, and the coefficient of friction with the roll guide is increased, so that the yarn making process and the processing process are performed. This is not preferable because it causes malfunctions such as fluff and single yarn breakage. On the other hand, when the amount of the oil agent exceeds 5.0% by weight, the excess oil agent adhering to the fiber surface falls off when it comes into contact with the roll guide, causing an operation failure due to an increase in scum in the yarn making process and the processing process. Therefore, it is not preferable.
油剤の種類は特に限定されるものではなく、平滑剤、制電剤、乳化剤、添加剤等を混合分散させた従来公知の油剤を用いることができる。 The kind of oil agent is not particularly limited, and a conventionally known oil agent in which a smoothing agent, an antistatic agent, an emulsifier, an additive and the like are mixed and dispersed can be used.
油剤のなかでも、ポリエーテル及び／又はポリエステルを主成分とする油剤が、平滑性に優れており、走行糸条が接触する機材の摩耗が少なく、毛羽や糸切れも抑制される点で好ましい。 Among the oil agents, an oil agent mainly composed of polyether and / or polyester is preferable in that it has excellent smoothness, wear of the equipment that is in contact with the running yarn is small, and fluff and yarn breakage are suppressed.
ポリエーテル及びポリエステルは、従来公知の化合物を用いることができる。具体的な化合物としては、例えば、エチレンオキサイドとプロピレンオキサイドとの共重合体、エチレンオキサイドとプロピレンオキサイドとの共重合体の片末端又は両末端を脂肪酸で封鎖した化合物などのポリエーテル；多価アルコールと脂肪酸とのエステル化物のアルキレンオキサイド付加物、そのカルボン酸エステルなどのポリエステルが挙げられる。これらの主成分に、アニオン界面活性剤、非イオン界面活性剤、カチオン界面活性剤、鉱物油等を１種又は２種以上混合した油剤を適用できる。 A conventionally well-known compound can be used for polyether and polyester. Specific examples of the compound include polyethers such as a copolymer of ethylene oxide and propylene oxide, a compound in which one or both ends of a copolymer of ethylene oxide and propylene oxide are blocked with a fatty acid; polyhydric alcohol And polyesters such as an alkylene oxide adduct of an esterified product of a carboxylic acid and a carboxylic acid ester thereof. An oil agent obtained by mixing one or more of anionic surfactant, nonionic surfactant, cationic surfactant, mineral oil and the like with these main components can be applied.
アラミド繊維に付着した油剤量は、ｎ−ヘキサン等の有機溶媒で油剤成分のみ抽出し、溶媒を留去することにより測定することができる。 The amount of the oil agent adhering to the aramid fibers can be measured by extracting only the oil agent component with an organic solvent such as n-hexane and distilling off the solvent.
本発明のアラミド繊維は極細繊維であるため、該繊維を織編物の素材として或いはカバリング糸の鞘糸として用いることにより、軽量かつ着用感、フィット性に優れた衣料やスポーツ着を製造することができる。また、高密度で製織することが容易であるため、防弾チョッキ、作業用手袋などの防護衣料として好適な、カバーファクターが大きい織物を製造することができる。 Since the aramid fiber of the present invention is an ultrafine fiber, by using the fiber as a material for a woven or knitted fabric or as a sheath yarn for a covering yarn, it is possible to produce clothing and sports clothes that are lightweight and have excellent wearing feeling and fit. it can. Further, since it is easy to weave at a high density, it is possible to produce a woven fabric having a large cover factor that is suitable as protective clothing such as bulletproof vests and work gloves.
あるいは、電線ケーブル、光ファイバーケーブル、補強用糸として用いることにより、従来よりも細い高強度のケーブルを提供することができる。 Alternatively, a high-strength cable thinner than before can be provided by using it as an electric cable, an optical fiber cable, or a reinforcing thread.
以下、実施例により本発明をより詳細に説明する。ただし、本発明はこれら実施例により限定されるものではない。 Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.
（実施例１）
通常の方法で得られたＰＰＴＡ（分子量約２０，０００）１ｋｇを４ｋｇの濃硫酸に溶解し、直径０．１ｍｍのホールを２５個有する口金から剪断速度３０，０００ｓｅｃ−１となるよう吐出し、４℃の水中に紡糸した後、１０重量％の水酸化ナトリウム水溶液で１０℃×１５秒の条件で中和処理した。その後、１５０℃×１５秒間の加熱処理をした後、ポリエーテルを主成分とする油剤を２．０重量％付与し、巻き取り工程にてボビンに巻き取り、水分率１０％のＰＰＴＡ繊維を得た。
Example 1
1 kg of PPTA (molecular weight of about 20,000) obtained by a normal method is dissolved in 4 kg of concentrated sulfuric acid, and discharged from a die having 25 holes with a diameter of 0.1 mm so that the shear rate is 30,000 sec −1 . After spinning in water at 4 ° C., it was neutralized with a 10% by weight aqueous sodium hydroxide solution at 10 ° C. for 15 seconds. Then, after heat treatment at 150 ° C. for 15 seconds, 2.0% by weight of an oil mainly composed of polyether is applied and wound on a bobbin in a winding process to obtain a PPTA fiber having a moisture content of 10%. It was.
（実施例２）
実施例１において、直径０．１ｍｍのホールを１２個有する口金を用いた以外は、実施例１と同様の方法で、ＰＰＴＡ繊維を得た。
(Example 2)
In Example 1, PPTA fibers were obtained in the same manner as in Example 1 except that a base having 12 holes having a diameter of 0.1 mm was used.
（実施例３）
実施例１において、紡糸以降巻き取り工程までで糸にかかる張力をいずれの工程においても１ｇ／ｄｔｅｘ以上の張力を保ったまま処理を行うことで得た総繊度１００ｄｔｅｘのＰＰＴＡ繊維を、分繊機にて２分割分繊を行って、総繊度５０ｄｔｅｘのＰＰＴＡ繊維を得た。
(Example 3)
In Example 1, PPTA fibers having a total fineness of 100 dtex obtained by carrying out processing while maintaining a tension of 1 g / dtex or more in any process from spinning to the winding process are applied to a splitting machine. The PPTA fiber having a total fineness of 50 dtex was obtained.
（比較例１）
実施例１において、直径０．１ｍｍのホールを５０個有する口金を用いた以外は、実施例１と同様の方法で、ＰＰＴＡ繊維を得た。
(Comparative Example 1)
In Example 1, PPTA fibers were obtained in the same manner as in Example 1 except that a base having 50 holes having a diameter of 0.1 mm was used.
（比較例２）
実施例１において、直径０．１ｍｍのホールを２５個有する口金から剪断速度２０，０００ｓｅｃ−１で吐出した以外は、実施例１と同様の方法で、ＰＰＴＡ繊維を得た。
(Comparative Example 2)
In Example 1, PPTA fibers were obtained in the same manner as in Example 1, except that the nozzle having 25 holes with a diameter of 0.1 mm was discharged at a shear rate of 20,000 sec −1 .
（比較例３）
実施例１において、油剤の付与量を０．２％とした以外は、実施例１と同様の方法で、ＰＰＴＡ繊維を得た。
(Comparative Example 3)
In Example 1, PPTA fibers were obtained in the same manner as in Example 1 except that the amount of oil applied was 0.2%.
＜ロールとフィラメント間の摩擦係数＞
得られたＰＰＴＡ繊維について、セラミックロール、梨地表面金属ロール、鏡面金属ロールとの摩擦係数を測定した。
<Friction coefficient between roll and filament>
About the obtained PPTA fiber, the friction coefficient with a ceramic roll, a satin surface metal roll, and a mirror surface metal roll was measured.
＜毛羽発生頻度＞
得られたＰＰＴＡ繊維について、撚糸加工を行った際の毛羽発生頻度を目視観察により評価した。
<Fuzzy frequency>
About the obtained PPTA fiber, the fluff occurrence frequency at the time of twisting was evaluated by visual observation.
実施例及び比較例で得たＰＰＴＡ繊維の物性、ならびに、単糸強度（ＪＩＳ Ｌ−１０１３準拠）の測定結果、摩擦係数及び毛羽発生の有無の評価結果を表１に示す。 Table 1 shows the physical properties of PPTA fibers obtained in Examples and Comparative Examples, measurement results of single yarn strength (based on JIS L-1013), evaluation results of friction coefficient and occurrence of fluff.
本発明のアラミド繊維は、単糸繊度が大きいので、従来のアラミド繊維に比べて単糸の引張強度が高く単糸切れを抑制することができ、また、フィラメント数が少ないので、撚糸工程等におけるロール素材との接触面積が小さく、その結果、摩擦抵抗が低減し毛羽発生を抑制することができた。 Since the aramid fiber of the present invention has a large single yarn fineness, the tensile strength of the single yarn is higher than that of the conventional aramid fiber and single yarn breakage can be suppressed. The contact area with the roll material was small, and as a result, the frictional resistance was reduced and the generation of fluff could be suppressed.
本発明のアラミド繊維は、毛羽の無い極細繊維であるため、新規な特性を付与する繊維として各種用途に有用である。 Since the aramid fiber of the present invention is an ultrafine fiber without fluff, it is useful for various applications as a fiber that imparts new characteristics.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017053179A (en) * | 2015-09-11 | 2017-03-16 | 東レ株式会社 | Structure and manufacturing method thereof |
| US20180223453A1 (en) * | 2015-08-07 | 2018-08-09 | Kolon Industries, Inc. | High strength copolymerized aramid fibers |
| WO2019216385A1 (en) | 2018-05-10 | 2019-11-14 | 帝人株式会社 | Wholly aromatic polyamide fiber |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3767756A (en) * | 1972-06-30 | 1973-10-23 | Du Pont | Dry jet wet spinning process |
| JPS63315630A (en) * | 1987-06-17 | 1988-12-23 | 今井 淑夫 | Composite yarn for knitting |
| JPH02216280A (en) * | 1988-10-26 | 1990-08-29 | Teijin Ltd | Wholly aromatic polyamide fiber |
| JP2004250835A (en) * | 2003-02-21 | 2004-09-09 | Teijin Ltd | Para-oriented aramid fiber |
| JP2007009378A (en) * | 2005-07-04 | 2007-01-18 | Du Pont Toray Co Ltd | Cut resistant textile product |
| JP2010150699A (en) * | 2008-12-25 | 2010-07-08 | Teijin Techno Products Ltd | Method for producing fine multifilament aramid fiber |
| JP2012028121A (en) * | 2010-07-22 | 2012-02-09 | Teijin Techno Products Ltd | Aromatic polyamide fiber wire cord |
| JP2012214298A (en) * | 2012-06-01 | 2012-11-08 | Kojima Giken Kogyo Ltd | Mechanism for positioning between conveyance device and processing device |
-
2013
- 2013-11-19 JP JP2013239075A patent/JP6284221B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3767756A (en) * | 1972-06-30 | 1973-10-23 | Du Pont | Dry jet wet spinning process |
| JPS63315630A (en) * | 1987-06-17 | 1988-12-23 | 今井 淑夫 | Composite yarn for knitting |
| JPH02216280A (en) * | 1988-10-26 | 1990-08-29 | Teijin Ltd | Wholly aromatic polyamide fiber |
| JP2004250835A (en) * | 2003-02-21 | 2004-09-09 | Teijin Ltd | Para-oriented aramid fiber |
| JP2007009378A (en) * | 2005-07-04 | 2007-01-18 | Du Pont Toray Co Ltd | Cut resistant textile product |
| JP2010150699A (en) * | 2008-12-25 | 2010-07-08 | Teijin Techno Products Ltd | Method for producing fine multifilament aramid fiber |
| JP2012028121A (en) * | 2010-07-22 | 2012-02-09 | Teijin Techno Products Ltd | Aromatic polyamide fiber wire cord |
| JP2012214298A (en) * | 2012-06-01 | 2012-11-08 | Kojima Giken Kogyo Ltd | Mechanism for positioning between conveyance device and processing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180223453A1 (en) * | 2015-08-07 | 2018-08-09 | Kolon Industries, Inc. | High strength copolymerized aramid fibers |
| JP2017053179A (en) * | 2015-09-11 | 2017-03-16 | 東レ株式会社 | Structure and manufacturing method thereof |
| WO2019216385A1 (en) | 2018-05-10 | 2019-11-14 | 帝人株式会社 | Wholly aromatic polyamide fiber |
| KR20200139230A (en) | 2018-05-10 | 2020-12-11 | 데이진 가부시키가이샤 | Wholly aromatic polyamide fiber |
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