JP2022057315A - Knitted or woven fabric having conductivity - Google Patents
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Abstract
Description
本発明は、導電性を有する編物又は織物に関する。 The present invention relates to a conductive knit or woven fabric.
これまで、各種の、導電性を有する編物又は織物が提案されている。例えば、特許文献１～４等には、導電性顔料を含有する編物又は織物が提案されている。 So far, various conductive knitted fabrics or woven fabrics have been proposed. For example, Patent Documents 1 to 4 and the like propose knitted fabrics or woven fabrics containing a conductive pigment.
ところで、本発明者が様々な導電糸、特に導電性顔料を含有する糸を用いた編物又は織物を検証したところ、伸長させた際に導電性能が低下するとの知見を得た。該導電性能の低下は、導電性を有する編物又は織物が伸長し得る用途、例えば、該編物又は該織物をウェアラブルの用途に用いた際、極めて不都合である。したがって、本発明は、伸長させても導電性能が殆ど低下しない編物又は織物を提供することを第一の課題とする。更に、本発明者は、表面が金属でコーティングされた糸を用いた編物や織物の場合は別として、導電性顔料が樹脂中に練り込まれたタイプの糸を用いた編物や織物の場合、必ずしも十分な除電効果を有してはいないとの知見も得た。したがって、本発明は、導電性顔料が樹脂中に練り込まれたタイプの糸を用いた編物又は織物であっても、十分な除電効果を有する編物又は織物を提供することを第二の課題とする。 By the way, when the present inventor verified a knitted fabric or a woven fabric using various conductive yarns, particularly yarns containing a conductive pigment, it was found that the conductive performance deteriorates when stretched. The decrease in conductive performance is extremely inconvenient when a knit or woven fabric having conductivity is used in an application in which the knit or woven fabric can be stretched, for example, when the knit or woven fabric is used in a wearable application. Therefore, the first object of the present invention is to provide a knitted fabric or a woven fabric whose conductive performance is hardly deteriorated even if it is stretched. Further, the present inventor has a case of knitted fabrics and woven fabrics using yarns in which a conductive pigment is kneaded into a resin, apart from knitted fabrics and woven fabrics using yarns whose surface is coated with metal. It was also found that it does not necessarily have a sufficient static elimination effect. Therefore, the second object of the present invention is to provide a knitted fabric or woven fabric having a sufficient static elimination effect even if the knitted fabric or woven fabric uses a type of yarn in which a conductive pigment is kneaded into a resin. do.
本発明（１）は、構成糸として導電糸が少なくとも用いられている編物又は織物において、
前記導電糸が、導電性を有するマルチフィラメント糸であり、
前記マルチフィラメント糸が、仮撚糸であり、且つ
前記編物又は前記織物を伸長させた場合、少なくとも一方向にて、前記編物又は前記織物の非伸長時における表面漏洩抵抗（ＪＩＳ Ｌ １０９４：２０１４）に対する、前記編物又は前記織物の最大伸長時における表面漏洩抵抗（ＪＩＳ Ｌ １０９４：２０１４）の変化率が、３０％以内であることを特徴とする編物又は織物である。
本発明（２）は、前記編物又は前記織物の帯電性半減期（ＪＩＳ Ｌ １０９４）が、１秒以下である、前記発明（１）の編物又は織物である。
本発明（３）は、前記マルチフィラメント糸を構成するフィラメントの少なくとも一が、前記フィラメントの表面の少なくとも一部に導電部を有しており、
前記導電部が、熱可塑性樹脂に導電性顔料が分散したペレットの溶融体から得られたものであり、
前記ペレットが、更に磁性体を含む、前記発明（１）又は（２）の編物又は織物である。
The present invention (1) is a knitted fabric or a woven fabric in which at least a conductive yarn is used as a constituent yarn.
The conductive yarn is a multifilament yarn having conductivity, and is
When the multifilament yarn is a false twisted yarn and the knit or the woven fabric is stretched, the surface leakage resistance (JIS L 1094: 2014) of the knit or the woven fabric when the knit or the woven fabric is not stretched in at least one direction. , The knitted fabric or the woven fabric, characterized in that the rate of change of the surface leakage resistance (JIS L 1094: 2014) at the time of maximum elongation of the knitted fabric or the woven fabric is within 30%.
The present invention (2) is the knitted fabric or woven fabric of the invention (1), wherein the charged half-life (JIS L 1094) of the knitted fabric or the woven fabric is 1 second or less.
In the present invention (3), at least one of the filaments constituting the multifilament yarn has a conductive portion on at least a part of the surface of the filament.
The conductive portion is obtained from a melt of pellets in which a conductive pigment is dispersed in a thermoplastic resin.
The pellet is the knit or woven fabric of the invention (1) or (2), further containing a magnetic material.
本発明（１）によれば、伸長させても導電性能が殆ど低下しない編物又は織物を提供することが可能となる。更に、本発明（１）及び（２）によれば、導電性顔料が樹脂中に練り込まれたタイプの糸を用いた編物又は織物であっても、十分な除電効果を有する編物又は織物を提供することが可能となる。 According to the present invention (1), it is possible to provide a knitted fabric or a woven fabric whose conductive performance is hardly deteriorated even if it is stretched. Further, according to the present inventions (1) and (2), even a knitted fabric or a woven fabric using a type of yarn in which a conductive pigment is kneaded into a resin can be a knitted fabric or a woven fabric having a sufficient static elimination effect. It will be possible to provide.
≪導電糸≫
本発明に係る導電糸は、導電性を有するマルチフィラメント糸において、
前記マルチフィラメント糸を構成するフィラメントの少なくとも一本が、前記フィラメントの表面の少なくとも一部に導電部を有しており、
前記導電部が、熱可塑性樹脂に導電性顔料が分散したペレットの溶融体から得られたものであり、
前記ペレットが、更に磁性体を含み、且つ、
前記マルチフィラメント糸が、仮撚糸である
ことを特徴とするマルチフィラメント糸である。以下、本発明に係る導電糸の構造、成分、物性及び製造方法を詳述する。
≪Conductive thread≫
The conductive yarn according to the present invention is a multifilament yarn having conductivity.
At least one of the filaments constituting the multifilament yarn has a conductive portion on at least a part of the surface of the filament.
The conductive portion is obtained from a melt of pellets in which a conductive pigment is dispersed in a thermoplastic resin.
The pellet further contains a magnetic substance and
The multifilament yarn is a multifilament yarn characterized by being falsely twisted yarn. Hereinafter, the structure, composition, physical properties and manufacturing method of the conductive yarn according to the present invention will be described in detail.
＜構造＞
（マルチフィラメント糸）
本発明に係る導電糸は、マルチフィラメント糸である。ここで、マルチフィラメント糸は、一般的意義の通り、例えば、化学繊維の長繊維（フィラメント）を複数の孔を有する紡糸口金から複数本（例えば、数十本）の繊維束として紡糸されたものを指す。尚、本発明の導電糸を構成する複数のフィラメントの内、少なくとも一本は導電性を有している（好適には、全フィラメント数を基準として、導電性フィラメントの数が、１０％以上、２０％以上、３０％以上、４０％以上、５０％以上、６０％以上、７０％以上、８０％以上、９０％以上、１００％）。特に、フィラメント糸の外側に位置するフィラメントが導電性であることが好適である。尚、本発明における導電糸とは、導電性を有する限り特に限定されず、例えば、糸長１ｃｍ当たりの抵抗値が１００Ω以下の糸（２５℃）をいう。
<Structure>
(Multifilament yarn)
The conductive yarn according to the present invention is a multifilament yarn. Here, as the general meaning, the multifilament yarn is, for example, a long fiber (filament) of a chemical fiber spun from a spinneret having a plurality of holes as a bundle of a plurality of fibers (for example, several tens). Point to. Of the plurality of filaments constituting the conductive yarn of the present invention, at least one has conductivity (preferably, the number of conductive filaments is 10% or more based on the total number of filaments). 20% or more, 30% or more, 40% or more, 50% or more, 60% or more, 70% or more, 80% or more, 90% or more, 100%). In particular, it is preferable that the filament located on the outside of the filament yarn is conductive. The conductive yarn in the present invention is not particularly limited as long as it has conductivity, and refers to, for example, a yarn (25 ° C.) having a resistance value of 100 Ω or less per 1 cm of yarn length.
（仮撚糸）
本発明に係る導電糸は、仮撚糸である。ここで、仮撚糸は、一般的意義の通り、例えば、化学繊維の熱可塑性を利用してフィラメント糸にクリンプ形態を与えた、嵩高性や伸縮性を付与した糸である。該仮撚糸は、例えば、マルチフィラメント糸に撚りをかけた状態で加熱・冷却することで撚り変形を繊維に固定し撚る方向と逆方向に撚ることで製造可能である。尚、仮撚方式としては、フィラメント糸｛延伸糸；ＦＯＹ（Ｆｕｌｌｙ Ｏｒｉｅｎｔｅｄ Ｙａｒｎ）｝を仮撚り専業者が専用の工場で加工する方式；紡糸・延伸工程に引続き仮撚り工程を一貫して行う方式；高速で紡糸することにより、一部の延伸を行いＰＯＹ（半延伸糸；Ｐａｒｔｉａｌｌｙ Ｏｒｉｅｎｔｅｄ Ｙａｒｎ)として、そのＰＯＹを延伸・仮撚り工程を経て、ＤＴＹ（延伸加工糸；Ｄｒａｗ Ｔｅｘｔｕｒｅｄ Ｙａｒｎ）とする方式；を例示できる。
(False twisted yarn)
The conductive yarn according to the present invention is a false twisted yarn. Here, the false plying yarn is, as a general meaning, a yarn having a bulkiness and elasticity, for example, which gives a crimp form to a filament yarn by utilizing the thermoplasticity of a chemical fiber. The false twisted yarn can be manufactured, for example, by heating and cooling the multifilament yarn in a twisted state to fix the twisting deformation to the fiber and twisting the yarn in the direction opposite to the twisting direction. As a false twisting method, a filament yarn {drawn yarn; FOY (Fully Oriented Yarn)} is processed in a dedicated factory by a false twisting specialist; a method in which the false twisting process is performed consistently following the spinning / drawing process. A method in which a part of the yarn is drawn at a high speed to form a POY (partially oriented yarn), and the POY is subjected to a drawing / false twisting process to form a DTY (drawn yarn; Draw Textured Yarn). ; Can be exemplified.
（内部構造）
マルチフィラメントの少なくとも一部を構成する導電性フィラメントは、すべてが導電部から構成されるものであってもよく、一部が導電部であり他が非導電部（又は本発明での導電部と異なる導電部）から構成されるものであってもよい（例えば、芯鞘構造）。尚、一部が本発明に係る導電部から構成される導電糸の場合、該導電部の少なくとも一部（特に好適には長手方向）又は全部が導電糸表面に存在していることが好適である。
(Internal structure)
The conductive filament constituting at least a part of the multifilament may be entirely composed of a conductive part, and a part thereof is a conductive part and the other part is a non-conductive part (or the conductive part in the present invention). It may be composed of different conductive portions (for example, a core sheath structure). In the case of a conductive yarn partially composed of a conductive portion according to the present invention, it is preferable that at least a part (particularly preferably in the longitudinal direction) or all of the conductive portion is present on the surface of the conductive yarn. be.
＜成分＞
（導電性フィラメントの構成樹脂）
マルチフィラメントの少なくとも一部を構成する導電性フィラメントの構成樹脂（本発明に係る導電部、前記導電部とは異なる種類の導電部、非導電部）は、熱可塑性樹脂である。熱可塑性樹脂としては、特に限定されず、例えば、ポリエステル樹脂、ポリエステル系共重合体樹脂、ポリアミド樹脂（例えば、ナイロン）、ウレタン樹脂、ウレタン系共重合体樹脂、アクリル樹脂、アクリル系共重合体樹脂、軟質塩化ビニル樹脂、塩化ビニル系共重合体樹脂、オレフィン樹脂、オレフィン系共重合体樹脂、酢酸ビニル樹脂、酢酸ビニル系共重合体樹脂、スチレン樹脂、スチレン系共重合体樹脂、フッ素系共重合体樹脂等を挙げることができる。ここで、該導電性フィラメントが芯鞘構造等複数区画からなるものの場合、区画間で異なる構成樹脂であっても同一の構成樹脂であってもよい。尚、マルチフィラメントが導電性フィラメント以外のフィラメントを含む場合や導電性フィラメントが本発明に係る導電部以外の部位を含む場合には、該フィラメントや該部位の構成樹脂は、特に限定されず、例えば、導電性フィラメントの構成樹脂で挙げたものである。
<Ingredients>
(Constituent resin of conductive filament)
The constituent resin of the conductive filament (the conductive portion according to the present invention, the conductive portion different from the conductive portion, and the non-conductive portion) constituting at least a part of the multifilament is a thermoplastic resin. The thermoplastic resin is not particularly limited, and is, for example, a polyester resin, a polyester-based copolymer resin, a polyamide resin (for example, nylon), a urethane resin, a urethane-based copolymer resin, an acrylic resin, or an acrylic copolymer resin. , Soft vinyl chloride resin, vinyl chloride-based copolymer resin, olefin resin, olefin-based copolymer resin, vinyl acetate resin, vinyl acetate-based copolymer resin, styrene resin, styrene-based copolymer resin, fluorine-based common weight Combined resin and the like can be mentioned. Here, when the conductive filament is composed of a plurality of compartments such as a core-sheath structure, different constituent resins or the same constituent resins may be used between the compartments. When the multifilament contains a filament other than the conductive filament or the conductive filament contains a portion other than the conductive portion according to the present invention, the filament and the constituent resin of the portion are not particularly limited, for example. , Constituent resin of conductive filament.
（導電性顔料）
導電性フィラメントに含まれる導電性顔料は、導電性である限り特に限定されず、導電カーボン（例えば、カーボンブラック、カーボンナノファイバー、グラフェン、カーボンナノチューブ、フラーレン、これらの組み合わせ）、金属、金属酸化物等を挙げることができる。尚、該導電カーボンの電気抵抗率（２５℃）は、特に限定されず、例えば、０．０００１～１Ω・ｃｍである。ここで、電気抵抗率は、粉体抵抗測定システム（ＭＣＰ－ＰＤ５１型：ダイアインスツルメンツ社製）を用いて、炭素粒子に圧力をかけ続けながら抵抗値を測定し、圧力に対して収束した抵抗値Ｒ（Ω）と、圧縮された炭素粒子層の面積Ｓ（ｃｍ２）と厚みｄ（ｃｍ）から電気抵抗率ρ（Ω・ｃｍ）＝Ｒ×（Ｓ／ｄ）を算出する。
(Conductive pigment)
The conductive pigment contained in the conductive filament is not particularly limited as long as it is conductive, and is conductive carbon (for example, carbon black, carbon nanofiber, graphene, carbon nanotube, fullerene, a combination thereof), metal, metal oxide. And so on. The electrical resistivity (25 ° C.) of the conductive carbon is not particularly limited, and is, for example, 0.0001 to 1 Ω · cm. Here, the electrical resistivity is measured by measuring the resistance value while continuously applying pressure to the carbon particles using a powder resistance measuring system (MCP-PD51 type: manufactured by Dia Instruments), and the resistance value converged with respect to the pressure. The electrical resistivity ρ (Ω · cm) = R × (S / d) is calculated from R (Ω), the area S (cm 2 ) of the compressed carbon particle layer, and the thickness d (cm).
（磁性体）
導電性フィラメントに含まれる磁性体は、好適には強磁性体である。該強磁性体としては、例えば、酸化鉄、酸化クロム、コバルト、フェライト、非酸化金属磁性体（オキサイド）を挙げることができる。但し、軟磁性体であっても、後述する、導電性顔料に磁性体を付着させる工程にて磁場をかけることで、磁性体に磁力を生じさせればよい。ここで、各種磁性体｛酸化鉄、酸化クロム、コバルト、フェライト、非酸化金属磁性体（オキサイド）等の強磁性体｝を導電性フィラメント中に含有させて検証した結果、種類を問わず、該導電性フィラメントを含むマルチフィラメント糸で製造した編物又は織物に対し、（１）該編物又は該織物を伸長させた場合、少なくとも一方向にて、該編物又は該織物の非伸長時における表面漏洩抵抗（ＪＩＳ Ｌ １０９４：２０１４）に対する、該編物又は該織物の最大伸長時における表面漏洩抵抗（ＪＩＳ Ｌ １０９４：２０１４）の変化率を低下させることができ、更に、（２）該編物又は織物の帯電性半減期（ＪＩＳ Ｌ １０９４）を低下させることができた。特に、鉄を含有する磁性体（酸化鉄、フェライト）については、上記の効果が顕著であることが確認されている。
(Magnetic material)
The magnetic material contained in the conductive filament is preferably a ferromagnet. Examples of the ferromagnet include iron oxide, chromium oxide, cobalt, ferrite, and a non-metal oxide magnetic material (oxide). However, even if it is a soft magnetic material, a magnetic force may be generated in the magnetic material by applying a magnetic field in the step of adhering the magnetic material to the conductive pigment, which will be described later. Here, as a result of verification by incorporating various magnetic materials {ferrous materials such as iron oxide, chromium oxide, cobalt, ferrite, non-metal oxide magnetic material (oxide)} in the conductive filament, the said, regardless of the type. With respect to a knit or woven fabric made of a multifilament yarn containing a conductive filament, (1) when the knit or woven fabric is stretched, surface leakage resistance when the knit or woven fabric is not stretched in at least one direction. The rate of change in the surface leakage resistance (JIS L 1094: 2014) at maximum elongation of the knitted fabric or woven fabric with respect to (JIS L 1094: 2014) can be reduced, and (2) charging of the knitted fabric or woven fabric. The sex half-life (JIS L 1094) could be reduced. In particular, it has been confirmed that the above effects are remarkable for magnetic materials containing iron (iron oxide, ferrite).
（その他の成分）
本発明に係る導電性フィラメントは、特定用途に適した成分や製造原料由来成分等として、上記以外の成分を含んでいてもよい（例えば、酸化チタン等の顔料）。
(Other ingredients)
The conductive filament according to the present invention may contain a component other than the above as a component suitable for a specific application, a component derived from a manufacturing raw material, or the like (for example, a pigment such as titanium oxide).
＜物性＞
本発明に係る、導電性フィラメントを含むマルチフィラメント糸は、導電性顔料が構成樹脂に練り込まれているにも拘わらず、糸表面に導電性成分が塗布・貼付されているものと比較しても、遜色無い導電性・除電性を有する。また、糸表面に導電性成分が塗布・貼付されているものは、伸縮により導電性成分部分が裂かれたり剥離したりするため、導電性が徐々に劣化する。他方、本発明に係るマルチフィラメント糸は、導電性顔料が構成樹脂に練り込まれているため、伸縮しても導電性の劣化を招かない。更に、該マルチフィラメント糸は、伸縮前後における導電性能が殆ど変わらない。上記特性は、導電性フィラメントが磁性体を含有しているため、マルチフィラメント糸に仮撚加工が施されているため、と理解される。
<Physical characteristics>
The multifilament yarn containing a conductive filament according to the present invention is compared with a yarn in which a conductive component is applied / attached to the surface of the yarn even though the conductive pigment is kneaded into the constituent resin. However, it has conductivity and static elimination properties comparable to those of other filament filament filaments. Further, in the case where the conductive component is applied / attached to the surface of the yarn, the conductive component portion is torn or peeled off due to expansion and contraction, so that the conductivity gradually deteriorates. On the other hand, in the multifilament yarn according to the present invention, since the conductive pigment is kneaded into the constituent resin, the conductivity does not deteriorate even if it expands and contracts. Further, the multifilament yarn has almost the same conductive performance before and after expansion and contraction. It is understood that the above characteristics are due to the false twisting of the multifilament yarn because the conductive filament contains a magnetic material.
＜マルチフィラメント糸の製造方法＞
（原料）
本発明に係る導電部を構成するペレットとして、構成樹脂に導電性顔料と磁性体が含まれているペレットを製造する。該ペレットは、例えば、熱可塑性樹脂に導電性顔料と磁性体とを添加する工程、導電性顔料と磁性体とが添加された熱可塑性樹脂を溶融状態にて混錬する工程、により製造される。因みに、導電性顔料と磁性体を添加するに際し、磁性体を予め導電性顔料表面に付着させて添加する態様については、水系にて両親媒性分子を用いることが好適である。具体的には、例えば、導電性顔料として導電性カーボンを用い且つ導電性カーボンに付着させる磁性体として四酸化三鉄を選択する場合、導電性カーボンと両親媒性分子とを水溶液中で混合し、導電性カーボン表面に逆ミセルを形成させる。更に、この混合溶液中に、硫酸鉄（II）（ＦｅＳＯ４・７Ｈ２Ｏ）及び塩化鉄（III）（ＦｅＣｌ３・６Ｈ２Ｏ）を加え、塩基性環境下で加熱攪拌すると、逆ミセル内で鉄（II）イオン、鉄（III）イオン及び水酸化物イオンが反応し、逆ミセルを鋳型として四酸化三鉄が成長する。その結果、導電性カーボン表面に磁性体である四酸化三鉄を付着させることができる。尚、本発明に係る導電部における導電性顔料の配合量は、求められる除電性（帯電性半減期）や使用する導電性顔料の種類等により変わるが、導電性カーボンを使用する場合には、例えば、構成樹脂１００質量部に対して５～５０質量部である。また、磁性体の配合量は、求められる除電性（帯電性半減期）や引き伸ばした際の表面漏洩抵抗の変化量等により変わるが、導電性カーボンを使用する場合には、例えば、導電カーボン１質量部に対して０．０００１～１質量部である。
<Manufacturing method of multifilament yarn>
(material)
As pellets constituting the conductive portion according to the present invention, pellets containing a conductive pigment and a magnetic substance in the constituent resin are manufactured. The pellet is produced, for example, by a step of adding a conductive pigment and a magnetic substance to a thermoplastic resin, and a step of kneading the thermoplastic resin to which the conductive pigment and the magnetic substance are added in a molten state. .. Incidentally, when adding the conductive pigment and the magnetic substance, it is preferable to use an amphipathic molecule in an aqueous system as a mode in which the magnetic substance is attached to the surface of the conductive pigment in advance and added. Specifically, for example, when conductive carbon is used as the conductive pigment and triiron tetroxide is selected as the magnetic substance to be attached to the conductive carbon, the conductive carbon and the amphipathic molecule are mixed in an aqueous solution. , Invert micelles are formed on the surface of conductive carbon. Further, iron (II) sulfate (FeSO 4.7H 2 O) and iron ( III ) chloride (FeCl 3.6H 2 O) are added to this mixed solution, and when heated and stirred in a basic environment, the inside of the reverse micelle is reached. Iron (II) ion, iron (III) ion and hydroxide ion react with each other, and triiron tetroxide grows using the reverse micelle as a template. As a result, triiron tetroxide, which is a magnetic substance, can be attached to the surface of the conductive carbon. The blending amount of the conductive pigment in the conductive portion according to the present invention varies depending on the required static elimination property (chargeability half-life), the type of the conductive pigment used, and the like, but when conductive carbon is used, it is used. For example, it is 5 to 50 parts by mass with respect to 100 parts by mass of the constituent resin. The blending amount of the magnetic material varies depending on the required static elimination property (chargeability half-life), the amount of change in surface leakage resistance when stretched, and the like. When conductive carbon is used, for example, conductive carbon 1 It is 0.0001 to 1 part by mass with respect to the part by mass.
（プロセス）
マルチフィラメント糸を構成するフィラメントがすべて導電性フィラメント糸である場合の一製造例を説明する。該導電性フィラメント糸は、例えば、まず、溶融状態にある前記ペレットを押出機の紡糸口金から押出して複数のフィラメントを得る工程、その後、これらに撚りをかけてマルチフィラメント糸とする工程、次いで、加熱・冷却することで撚り変形を繊維に固定する工程、その後、撚る方向と逆方向に撚る工程、にて製造可能である。
(process)
A manufacturing example will be described in which all the filaments constituting the multifilament yarn are conductive filament yarns. For the conductive filament yarn, for example, first, the pellet in a molten state is extruded from a spinneret of an extruder to obtain a plurality of filaments, and then these are twisted to form a multifilament yarn, and then. It can be manufactured by a step of fixing the twisting deformation to the fiber by heating and cooling, and then a step of twisting in the direction opposite to the twisting direction.
≪導電性を有する編物又は織物≫
＜原料糸＞
原料糸としては、本発明に係るマルチフィラメント糸のみでも、本発明に係るマルチフィラメント糸に加え他の糸を使用してもよい。尚、織物又は編物における導電性マルチフィラメント糸は、求められる性質にもよるため特に限定されないが、例えば、混率５％以上、混率１０％以上、混率１５％以上、混率２０％以上、混率２５％以上、混率３０％以上、混率５０％以上、混率５７％以上、混率１００％である。ここで、他の糸としては、特に限定されず、例えば、合成繊維、例えば、ナイロン、ポリエステル、アクリル、ピエロン、ビニリデン、ポリ塩化ビニル、ポリオレフィン（例えば、ポリエチレン、ポリプロピレン）、ポリウレタン、ベンゾエート、ポリクラール、再生樹脂、例えば、レーヨン、キュプラ、半合成樹脂、例えば、アセテート、プロミックス；天然繊維、例えば、植物繊維、例えば、綿、カボック、黄麻、亜麻、大麻、芋麻、ラミー、マニラ麻、サイザル麻、ヤシ、ビンロウジュ、動物繊維、例えば、絹、羊、ラクダ、アルパカ、カシミア、モヘア；を挙げることができる。ここで、編物又は織物に対してより伸縮性を持たせる観点から、合成繊維を用いる場合には、該合成繊維も仮撚加工が施されたものを使用することが好適である。
≪Knitted fabric or woven fabric with conductivity≫
<Raw material thread>
As the raw material yarn, only the multifilament yarn according to the present invention may be used, or other yarns may be used in addition to the multifilament yarn according to the present invention. The conductive multifilament yarn in the woven fabric or knitted fabric is not particularly limited because it depends on the required properties, but for example, the mixing ratio is 5% or more, the mixing ratio is 10% or more, the mixing ratio is 15% or more, the mixing ratio is 20% or more, and the mixing ratio is 25%. As described above, the mixing ratio is 30% or more, the mixing ratio is 50% or more, the mixing ratio is 57% or more, and the mixing ratio is 100%. Here, the other threads are not particularly limited, and for example, synthetic fibers such as nylon, polyester, acrylic, pieron, vinylidene, polyvinyl chloride, polyolefin (for example, polyethylene, polypropylene), polyurethane, benzoate, polyclar, and the like. Recycled resins such as rayon, cupra, semi-synthetic resins such as acetate, promix; natural fibers such as plant fibers such as cotton, cabock, arsenic, flax, cannabis, potato hemp, ramie, Manila hemp, sisal hemp, Palms, bin rouge, animal fibers such as silk, sheep, camels, alpaca, cashmere, mohair; can be mentioned. Here, when a synthetic fiber is used, it is preferable to use a synthetic fiber that has been subjected to false twisting processing from the viewpoint of giving the knitted fabric or the woven fabric more elasticity.
＜構造＞
編物の構造としては、特に限定されず、例えば、緯編み、経編み、例えば、丸編み、横編み、天竺編み、サーマル／ワッフル編み、鹿の子編み、リバーシブル鹿の子、フライス編み、スムース編み／インターロック編み、裏パイル、裏起毛を挙げることができる。また、織物の構造としても、特に限定されず、例えば、平織、綾織／斜文織、朱子／繻子織を挙げることができる。
<Structure>
The structure of the knitted fabric is not particularly limited, and is not particularly limited, for example, weft knitting, warp knitting, for example, circular knitting, weft knitting, heavenly knitting, thermal / waffle knitting, piqué, reversible piqué, milling, smooth knitting / interlock knitting. , Back pile, back brushed. The structure of the woven fabric is not particularly limited, and examples thereof include plain weave, twill weave / twill weave, and satin weave / satin weave.
＜物性＞
（表面漏洩抵抗）
本発明に係る編物又は織物は、該編物又は該織物を伸長させた場合、少なくとも一方向にて、該編物又は該織物の非伸長時における表面漏洩抵抗（ＪＩＳ Ｌ １０９４：２０１４）に対する、該編物又は該織物の最大伸長時における表面漏洩抵抗（ＪＩＳ Ｌ １０９４：２０１４）の変化率が、３０％以内、２５％以内、２０％以内、１５％以内、１０％以内、７．５％以内、５％以内、２．５％以内、１％以内であることが好適である。また、本発明に係る編物又は織物は、該編物又は該織物を伸長させた場合、少なくとも一方向にて、該編物又は該織物の非伸長時における表面漏洩抵抗（ＪＩＳ Ｌ １０９４：２０１４）に対する、該編物又は該織物の最大伸長の１／２伸長時における表面漏洩抵抗（ＪＩＳ Ｌ １０９４：２０１４）の変化率が、３０％以内、２５％以内、２０％以内、１５％以内、１０％以内、７．５％以内、５％以内、２．５％以内、１％以内であることが好適である。尚、該物性は、本発明のマルチフィラメント糸のみで達成しなくとも、他の導電糸と組み合わせて実現してもよい。また、表面漏洩抵抗は、好適には、１×１０１０Ω以下、５×１０９Ω以下、１×１０９Ω以下、５×１０８Ω以下、１×１０８以下、５×１０７以下である。下限値は、例えば、１×１０３Ω、１×１０４Ω、１×１０５Ωである。
<Physical characteristics>
(Surface leakage resistance)
The knit or woven fabric according to the present invention is the knitted fabric with respect to the surface leakage resistance (JIS L 1094: 2014) of the knitted fabric or the woven fabric when the knitted fabric or the woven fabric is stretched, in at least one direction when the knitted fabric or the woven fabric is not stretched. Or, the rate of change of the surface leakage resistance (JIS L 1094: 2014) at the maximum elongation of the woven fabric is within 30%, within 25%, within 20%, within 15%, within 10%, within 7.5%, 5 It is preferably within%, within 2.5%, and within 1%. Further, the knitted fabric or woven fabric according to the present invention has a resistance to surface leakage resistance (JIS L 1094: 2014) when the knitted fabric or woven fabric is stretched, in at least one direction, when the knitted fabric or woven fabric is not stretched. The rate of change of the surface leakage resistance (JIS L 1094: 2014) at the time of 1/2 elongation of the maximum elongation of the knitted fabric or the woven fabric is within 30%, within 25%, within 20%, within 15%, within 10%, It is preferably 7.5% or less, 5% or less, 2.5% or less, and 1% or less. It should be noted that the physical characteristics may not be achieved only by the multifilament yarn of the present invention, but may be realized by combining with other conductive yarns. The surface leakage resistance is preferably 1 × 10 10 Ω or less, 5 × 10 9 Ω or less, 1 × 10 9 Ω or less, 5 × 10 8 Ω or less, 1 × 10 8 or less, 5 × 10 7 or less. Is. The lower limit is, for example, 1 × 10 3 Ω, 1 × 10 4 Ω, 1 × 10 5 Ω.
（帯電性半減期）
本発明に係る編物又は織物の帯電性半減期（ＪＩＳ Ｌ １０９４）は、１秒以下、０．５秒以下、０．１秒以下、０．０７５秒以下、０．０５秒以下であることが好適である。尚、該物性は、本発明のマルチフィラメント糸のみで達成しなくとも、他の導電糸と組み合わせて実現してもよい。
(Charging half-life)
The chargeability half-life (JIS L 1094) of the knitted fabric or woven fabric according to the present invention is 1 second or less, 0.5 seconds or less, 0.1 seconds or less, 0.075 seconds or less, 0.05 seconds or less. Suitable. It should be noted that the physical characteristics may not be achieved only by the multifilament yarn of the present invention, but may be realized by combining with other conductive yarns.
≪用途≫
本発明に係る編物又は織物の用途としては、例えば、ウェアラブルウエア（スマートウエア）用途の生地（例えば、リモート医療用途、人体モニタ、コネテッドカー等のウェアラブル端末、人体内の静電気の除電による効果の利用）、スマートヒーター、通電することで暖かくなる生地（試作完了）・寒冷地用の衣料等を挙げることができる。
≪Use≫
Applications of the knitted fabric or woven fabric according to the present invention include, for example, fabrics for wearable wear (smart wear) (for example, remote medical applications, wearable terminals such as human body monitors and connected cars, and utilization of the effect of static electricity elimination in the human body). , Smart heaters, fabrics that warm up when energized (trial production completed), clothing for cold regions, etc.
≪導電性フィラメント糸の製造≫
ＳＷＣＮＴ（Ｎａｎｏ－Ｌａｂ）０.５ｇを３０％アンモニア水（ＣＨＡＰＳ含有：１ｇ／２０ｍＬ）５０ｍＬに入れ、自動乳鉢で練り、混合した。更に、自動乳鉢で混合しながら、０.７Ｍ硫酸鉄（II）（ＦｅＳＯ４・７Ｈ２Ｏ）５０ｍＬ及び１.２Ｍ塩化鉄（III）（ＦｅＣｌ３・６Ｈ２Ｏ）６０ｍＬを加え、１５分間攪拌した。その後、界面活性剤として１％ラウリン酸ナトリウム水溶液を加え、８７℃で５０分間加熱攪拌することにより、処理液を得た。得られた処理液中に含まれているＳＷＣＮＴを洗浄及び乾燥することにより、四酸化三鉄が付着したＳＷＣＮＴ分散体を得た。その後、乾燥した該ＳＷＣＮＴ分散体を溶融したポリエステル樹脂に添加し十分に混錬し、ＳＷＣＮＴ分散ポリエステル樹脂ペレットを得た。次いで、慣用手法にて、該ペレットの溶融体を押出機の紡糸口金から押出し、撚りをかけてマルチフィラメント糸とした後、慣用手法にて仮撚加工を施し、実施例に係る導電性マルチフィラメント糸を製造した。また、同様の手法にて、導電部が鞘側である芯鞘型の導電性マルチフィラメント（芯はポリエステル樹脂）も製造した（１６０Ｄ／３２Ｆ）。図１は、該導電性マルチフィラメントの全体写真である。また、図２は、該導電性フィラメント糸を構成する一本のフィラメントの断面写真である。
≪Manufacturing of conductive filament yarn≫
0.5 g of SWCNT (Nano-Lab) was placed in 50 mL of 30% aqueous ammonia (CHASPs content: 1 g / 20 mL), kneaded in an automatic mortar and mixed. Further, while mixing in an automatic mortar, 50 mL of 0.7 M iron (II) sulfate (FeSO 4.7H 2 O) and 60 mL of 1.2 M iron ( III ) chloride (FeCl 3.6H 2 O) are added and stirred for 15 minutes. bottom. Then, a 1% aqueous sodium laurate solution was added as a surfactant, and the mixture was heated and stirred at 87 ° C. for 50 minutes to obtain a treatment liquid. The SWCNTs contained in the obtained treatment liquid were washed and dried to obtain a SWCNT dispersion to which triiron tetroxide was attached. Then, the dried SWCNT dispersion was added to the molten polyester resin and sufficiently kneaded to obtain SWCNT-dispersed polyester resin pellets. Next, the melt of the pellets is extruded from the spinneret of the extruder by a conventional method, twisted to form a multifilament yarn, and then false-twisted by a conventional method to carry out a false twisting process according to the embodiment. Manufactured yarn. Further, by the same method, a core-sheath type conductive multifilament (core is polyester resin) having a conductive portion on the sheath side was also manufactured (160D / 32F). FIG. 1 is an overall photograph of the conductive multifilament. Further, FIG. 2 is a cross-sectional photograph of one filament constituting the conductive filament yarn.
≪導電性編物の製造≫
前記導電性マルチフィラメント糸を用い、丸編みの編物を製造した（目付：３１０ｇ／ｍ）。この際、導電性マルチフィラメント糸は横方向に用いた。また、導電性マルチフィラメント糸の混率は１７％とした。また、導電性マルチフィラメント糸以外の糸として、綿３０／１（混率７５％）及びポリウレタン糸３０Ｄ（混率８％）を用いた。尚、比較例として、磁性体を含有しないことを除き前記導電性マルチフィラメントと同様の製法にて得られたマルチフィラメントを用いた丸編みの編物も製造した。
≪Manufacturing of conductive knits≫
A circular knitted fabric was produced using the conductive multifilament yarn (weight: 310 g / m). At this time, the conductive multifilament yarn was used in the lateral direction. The mixing ratio of the conductive multifilament yarn was 17%. Further, as the yarn other than the conductive multifilament yarn, cotton 30/1 (mixing ratio 75%) and polyurethane yarn 30D (mixing ratio 8%) were used. As a comparative example, a circular knitted fabric using a multifilament obtained by the same manufacturing method as the conductive multifilament except that it does not contain a magnetic material was also manufactured.
≪物性≫
（表面漏洩抵抗）
本実施例に係る導電性編物を縦横両方向に伸長させ、ＪＩＳ Ｌ １０９４：２０１４に基づき、該編物の非伸長時における表面漏洩抵抗に対する、該編物の１／２伸長時及び最大伸長時における表面漏洩抵抗を測定した。その結果、特に導電性フィラメントが配置されている方向における表面漏洩抵抗は、表１に示すように、伸長前後で変わらず、低い値であったと共に、その値もほぼ変わらなかった。他方、本比較例に係る編物は、本実施例に係る導電性編物と比較し、そもそも表面漏洩抵抗の値自体が遥かに高く、導電性が求められる用途に不向きであった。尚、導電性マルチフィラメント糸の混率を変えたもの（下記表２の「２」＝１４％、下記表２の「４」＝１１％）、目付量を変えたもの（下記表２の「３」＝３３７ｇ／ｍ）についても試験し、本実施例（下記表の「１」）とほぼ同等の結果であった。
≪Physical characteristics≫
(Surface leakage resistance)
The conductive knit according to this embodiment is stretched in both vertical and horizontal directions, and based on JIS L 1094: 2014, surface leakage during non-stretching and maximum stretching of the knit with respect to surface leakage resistance during non-stretching of the knit. The resistance was measured. As a result, as shown in Table 1, the surface leakage resistance, especially in the direction in which the conductive filament was arranged, did not change before and after elongation, was a low value, and the value was almost unchanged. On the other hand, the knitted fabric according to the present comparative example has a much higher surface leakage resistance value than the conductive knitted fabric according to the present embodiment, and is not suitable for applications requiring conductivity. The mixing ratio of the conductive multifilament yarn was changed (“2” = 14% in Table 2 below, “4” = 11% in Table 2 below), and the basis weight was changed (“3” in Table 2 below). "= 337 g / m) was also tested, and the results were almost the same as those of this example (“1” in the table below).
（帯電性半減期）
本実施例に係る導電性編物の帯電性半減期を、ＪＩＳ Ｌ １０９４に基づき測定した。その結果、表２に示すように、検出限界未満と、極めて短時間で除電できた。尚、本比較例に係る編物は、本実施例に係る導電性編物と比較し、帯電性半減期が遥かに長く、除電が求められる用途に不向きであった。
(Charging half-life)
The chargeable half-life of the conductive knitted fabric according to this example was measured based on JIS L 1094. As a result, as shown in Table 2, static elimination was possible in an extremely short time, which was below the detection limit. The knitted fabric according to this comparative example has a much longer chargeable half-life than the conductive knitted fabric according to this example, and is not suitable for applications requiring static elimination.
以上のように、本発明においては、導電性糸に磁性体を含有させることに加え、仮撚加工を施すことで、伸長前後における表面漏洩抵抗の低下抑制を実現できると共に、帯電性半減期を極めて短時間とすることが可能となる。
As described above, in the present invention, in addition to containing a magnetic material in the conductive yarn, by performing false twisting processing, it is possible to suppress a decrease in surface leakage resistance before and after elongation, and to achieve a chargeability half-life. It can be done in an extremely short time.
Claims (3)
前記導電糸が、導電性を有するマルチフィラメント糸であり、
前記マルチフィラメント糸が、仮撚糸であり、且つ
前記編物又は前記織物を伸長させた場合、少なくとも一方向にて、前記編物又は前記織物の非伸長時における表面漏洩抵抗（ＪＩＳ Ｌ １０９４：２０１４）に対する、前記編物又は前記織物の最大伸長時における表面漏洩抵抗（ＪＩＳ Ｌ １０９４：２０１４）の変化率が、３０％以内であることを特徴とする編物又は織物。 In knitted fabrics or woven fabrics in which at least conductive yarns are used as constituent yarns.
The conductive yarn is a multifilament yarn having conductivity, and is
When the multifilament yarn is a false twisted yarn and the knit or the woven fabric is stretched, the surface leakage resistance (JIS L 1094: 2014) of the knit or the woven fabric when the knit or the woven fabric is not stretched in at least one direction. , The knit or woven fabric, characterized in that the rate of change of the surface leakage resistance (JIS L 1094: 2014) at the time of maximum elongation of the knitted fabric or the woven fabric is within 30%.
前記導電部が、熱可塑性樹脂に導電性顔料が分散したペレットの溶融体から得られたものであり、
前記ペレットが、更に磁性体を含む、請求項１又は２記載の編物又は織物。 At least one of the filaments constituting the multifilament yarn has a conductive portion on at least a part of the surface of the filament.
The conductive portion is obtained from a melt of pellets in which a conductive pigment is dispersed in a thermoplastic resin.
The knit or woven fabric according to claim 1 or 2, wherein the pellet further contains a magnetic substance.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020165499A JP2022057315A (en) | 2020-09-30 | 2020-09-30 | Knitted or woven fabric having conductivity |
| JP2021023974A JP6931900B1 (en) | 2020-09-30 | 2021-02-18 | Conductive knit or woven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020165499A JP2022057315A (en) | 2020-09-30 | 2020-09-30 | Knitted or woven fabric having conductivity |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2021023974A Division JP6931900B1 (en) | 2020-09-30 | 2021-02-18 | Conductive knit or woven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2022057315A true JP2022057315A (en) | 2022-04-11 |
Family
ID=77554520
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020165499A Withdrawn JP2022057315A (en) | 2020-09-30 | 2020-09-30 | Knitted or woven fabric having conductivity |
| JP2021023974A Active JP6931900B1 (en) | 2020-09-30 | 2021-02-18 | Conductive knit or woven |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2021023974A Active JP6931900B1 (en) | 2020-09-30 | 2021-02-18 | Conductive knit or woven |
Country Status (1)
| Country | Link |
|---|---|
| JP (2) | JP2022057315A (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02193180A (en) * | 1989-03-20 | 1990-07-30 | Toei Sangyo Kk | Fiber for brush |
| JP3128349B2 (en) * | 1992-09-28 | 2001-01-29 | 株式会社クラレ | Composite magnetic fiber |
| US5744090A (en) * | 1997-01-13 | 1998-04-28 | Xerox Corporation | Process for the manufacture of conductive fibers usable in electrostatic cleaning devices |
| JP2007002374A (en) * | 2005-06-27 | 2007-01-11 | Nippon Ester Co Ltd | Conductive conjugated fiber and conductive fabric |
| JP2017203220A (en) * | 2016-05-09 | 2017-11-16 | ユニプラス滋賀株式会社 | Magnetizable fiber, method for producing the same, twisted yarn and magnetized fabric |
-
2020
- 2020-09-30 JP JP2020165499A patent/JP2022057315A/en not_active Withdrawn
-
2021
- 2021-02-18 JP JP2021023974A patent/JP6931900B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP6931900B1 (en) | 2021-09-08 |
| JP2022058088A (en) | 2022-04-11 |
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| A761 | Written withdrawal of application |
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