JP2000064125A - Metal fiber manufacturing method - Google Patents
Metal fiber manufacturing methodInfo
- Publication number
- JP2000064125A JP2000064125A JP10226989A JP22698998A JP2000064125A JP 2000064125 A JP2000064125 A JP 2000064125A JP 10226989 A JP10226989 A JP 10226989A JP 22698998 A JP22698998 A JP 22698998A JP 2000064125 A JP2000064125 A JP 2000064125A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- fiber
- fine
- powder
- green
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 74
- 239000002184 metal Substances 0.000 title claims abstract description 47
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 47
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 239000000843 powder Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 19
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 14
- -1 polyethylene Polymers 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000005238 degreasing Methods 0.000 claims abstract description 8
- 238000002074 melt spinning Methods 0.000 claims abstract description 7
- 239000004698 Polyethylene Substances 0.000 claims abstract description 6
- 239000004743 Polypropylene Substances 0.000 claims abstract description 6
- 229920000573 polyethylene Polymers 0.000 claims abstract description 6
- 229920001155 polypropylene Polymers 0.000 claims abstract description 6
- 239000012298 atmosphere Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 229910001111 Fine metal Inorganic materials 0.000 claims description 13
- 238000007747 plating Methods 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 abstract description 3
- 239000011230 binding agent Substances 0.000 description 5
- 238000010304 firing Methods 0.000 description 5
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000007772 electroless plating Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000005300 metallic glass Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 229910017709 Ni Co Inorganic materials 0.000 description 1
- 229910003267 Ni-Co Inorganic materials 0.000 description 1
- 229910003262 Ni‐Co Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Inorganic Fibers (AREA)
Abstract
(57)【要約】
【課題】 金属繊維を安価に製造する。
【解決手段】 ポリエチレンまたはポリプロピレンなど
の熱可塑性樹脂に金属微粉を混合後押し出し成形する溶
融紡糸法によりグリーン繊維にする工程と、グリーン繊
維に紫外線を照射して硬化させ樹脂が熱可塑性を持たな
いようにする工程と、樹脂が硬化したグリーン繊維を還
元性雰囲気で脱脂して焼結する工程を有している。
(57) [Summary] [PROBLEMS] To produce metal fibers at low cost. SOLUTION: A step of mixing a metal fine powder into a thermoplastic resin such as polyethylene or polypropylene and then extruding the mixture to obtain a green fiber by a melt spinning method, and irradiating the green fiber with ultraviolet rays to cure the resin so that the resin does not have thermoplasticity. And a step of degreasing and sintering the green fiber with the cured resin in a reducing atmosphere.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は極細の針金である金
属繊維の製造方法法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing metal fibers, which are fine wires.
【０００２】[0002]
【従来の技術】金属繊維は強度材料（例えば繊維強化プ
ラスチックスとして高級釣竿やゴルフシャフトなど）、
磁性材料（例えばパルス発生素子や小型平面インダクタ
など）として用いられる他、導電性材料としてカーペッ
トなどに織り込んで帯電防止用などに使われる。また、
Ｎｉ繊維を綿状に成形してＮｉ触媒として使用すること
もできる。2. Description of the Related Art Metal fibers are strong materials (such as high-grade fishing rods and golf shafts as fiber reinforced plastics),
In addition to being used as a magnetic material (for example, a pulse generating element or a small flat inductor), it is also used as an electrically conductive material in a carpet or the like for antistatic purposes. Also,
It is also possible to form Ni fiber into a cotton shape and use it as a Ni catalyst.
【０００３】かかる金属繊維は、金属の溶湯をノズルか
ら押し出して細線を作り、この細線を繰り返し引き抜き
加工することで繊維化することにより生産される。アモ
ルファス金属繊維の場合には、金属を急冷するので、回
転するドラムの内溝に遠心力により張り付いた冷却液層
に向け、溶融金属がノズルから吐出する。急冷固化した
アモルファス金属繊維は自動的にドラム内壁に巻き取ら
れて連続的に生産される。このようにしてできた細線を
繰り返し線引きすることにより極細の金属繊維が生産さ
れる。Such metal fibers are produced by extruding a molten metal from a nozzle to form fine wires, and repeatedly drawing the thin wires to form fibers. In the case of amorphous metal fibers, the metal is rapidly cooled, so that the molten metal is discharged from the nozzle toward the cooling liquid layer attached to the inner groove of the rotating drum by centrifugal force. The rapidly solidified amorphous metal fibers are automatically wound around the inner wall of the drum and continuously produced. Ultrafine metal fibers are produced by repeatedly drawing the thin wire thus formed.
【０００４】一方、熱変形しないポリビニールブチラー
ル樹脂（ＰＶＢ）を結合剤として用い、これに金属粉を
混入してスラリ化し、細いノズルから押し出してグリー
ン繊維にし、それを脱脂して焼結することにより金属繊
維を製造することもできる。On the other hand, a polyvinyl butyral resin (PVB) that does not undergo thermal deformation is used as a binder, metal powder is mixed into this as a binder, and it is slurried, extruded from a thin nozzle into green fiber, degreased and sintered. It is also possible to produce metal fibers.
【０００５】[0005]
【発明が解決しようとする課題】金属の溶湯から細線を
作り、これを繰り返し引き抜き加工して金属繊維を製造
する方法では、引き抜き加工するときに金属は加工硬化
を起すので、そのたびに焼鈍して軟化させねばならず非
常に手間がかかる。したがって、金属繊維は高価にな
る。また、ＰＶＢ樹脂を結合剤として用いてグリーン繊
維を作り、それを焼成して金属繊維を製造する方法で
は、ＰＶＢが高価であるとともに、有機溶剤を溶媒とし
て用いてスラリ化するため製造コストが高い。さらに、
このような結合材を用いて高速でスラリを押し出す方法
では溶媒が抜けた部分が孔となり、グリーン繊維の空隙
率が大きく、グリーン繊維が容易に切れてしまう。SUMMARY OF THE INVENTION In the method of producing a metal fiber by making thin wires from a molten metal and repeatedly drawing the metal, the metal undergoes work hardening during the drawing process. It has to be softened, which is very time-consuming. Therefore, the metal fiber becomes expensive. Further, in a method of producing green fibers by using PVB resin as a binder and firing the green fibers, PVB is expensive, and the production cost is high because an organic solvent is used as a solvent to make a slurry. . further,
In the method in which the slurry is extruded at a high speed using such a binder, the portion where the solvent has escaped becomes a hole, the porosity of the green fiber is large, and the green fiber is easily cut.
【０００６】本発明は、以上述べた問題点に鑑み案出さ
れたもので金属微粉と熱可塑性樹脂の混合物を溶融紡糸
して製造されたグリーン繊維を熱可塑性を失わせるよう
に加工して焼成することにより金属繊維を安価に製造す
ることを目的とする。The present invention has been devised in view of the above-mentioned problems. The green fiber produced by melt spinning a mixture of fine metal powder and a thermoplastic resin is processed and burned so as to lose the thermoplasticity. By doing so, the purpose is to produce metal fibers at low cost.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、請求項１に記載された発明の金属繊維の製造方法
は、ポリエチレンまたはポリプロピレンなどの熱可塑性
樹脂に金属微粉を混合後押し出し成形する溶融紡糸法に
よりグリーン繊維にする行程と、グリーン繊維に紫外線
を照射して硬化させ樹脂が熱可塑性を持たないようにす
る工程と、樹脂が硬化したグリーン繊維を還元性雰囲気
で脱脂して焼結する工程を有している。In order to achieve the above object, the method for producing a metal fiber according to the first aspect of the present invention is such that a fine metal powder is mixed with a thermoplastic resin such as polyethylene or polypropylene and then extrusion molding is performed. The process of making the green fiber by the spinning method, the step of irradiating the green fiber with ultraviolet rays to cure it so that the resin does not have thermoplasticity, and the degreasing and sintering of the resin-hardened green fiber in a reducing atmosphere. Have a process.
【０００８】請求項２に記載された発明の金属繊維の製
造方法は、ポリエチレンまたはポリプロピレンなどの熱
可塑性樹脂に金属微粉を混合後押し出し成形する溶融紡
糸法によりグリーン繊維にする工程と、グリーン繊維に
金属メッキ処理をする工程と、金属メッキしたグリーン
繊維を還元性雰囲気で脱脂して焼結する工程を有してい
る。According to the second aspect of the present invention, there is provided a method for producing a metal fiber, which comprises a step of forming a green fiber by a melt-spinning method in which a fine metal powder is mixed with a thermoplastic resin such as polyethylene or polypropylene and then extruded to form a green fiber. It has a step of performing a metal plating process and a step of degreasing and sintering the metal-plated green fiber in a reducing atmosphere.
【０００９】金属微粉と熱可塑性樹脂の混合重量比は、
金属微粉／樹脂＝９０／１０〜 ６０／４０であること
が好ましい。The mixing weight ratio of the fine metal powder and the thermoplastic resin is
Fine metal powder / resin = 90/10 to 60/40 is preferable.
【００１０】金属はＮｉであってもよい。The metal may be Ni.
【００１１】次に本発明の作用を説明する。熱可塑性樹
脂の金属微粉を混ぜて溶融して紡糸することにより容易
に極細なグリーン繊維が得られる。このグリーン繊維は
そのまま焼成すると溶融して原形を失ってしまうので、
紫外線を照射して硬化させ、加熱しても溶融しない状態
で脱脂・焼結するようにしてもよいし、グリーン繊維に
金属メッキ処理することによりグリーン繊維に外殻を形
成し、内部の樹脂が溶融しても原形を失わないようにし
て脱脂・焼結するようにしてもよい。焼結により金属微
粉同士が密着し金属繊維になる。Next, the operation of the present invention will be described. Ultrafine green fibers can be easily obtained by mixing fine metal powders of thermoplastic resin, melting and spinning. If you fire this green fiber as it is, it will melt and lose its original shape,
It may be hardened by irradiation with ultraviolet rays and degreased / sintered in a state where it does not melt even when heated. Degreasing and sintering may be performed without losing the original shape even when melted. By sintering, the fine metal powders come into close contact with each other and become metal fibers.
【００１２】[0012]
【発明の実施の形態】以下、本発明の１実施形態につい
て図面を参考しつつ説明する。図１は溶融紡糸方法を示
す概念図である。図２は本発明の金属繊維の製造方法の
フローシートであり、（Ａ）は請求項１記載の発明のフ
ローシート、（Ｂ）は請求項２記載の発明のフローシー
トである。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram showing a melt spinning method. FIG. 2 is a flow sheet of the method for producing a metal fiber of the present invention, (A) is the flow sheet of the invention of claim 1 and (B) is the flow sheet of the invention of claim 2.
【００１３】先ず、請求項１記載の発明について説明す
る。図１において、１１はホッパ、１２はエスクトルー
ダ、１３はスクリュ、１４はギヤポンプ、１５は紡糸口
金、１６は冷却空気、１７はグリーン繊維、１８は紫外
線、１９は巻取機である。First, the invention according to claim 1 will be described. In FIG. 1, 11 is a hopper, 12 is an escrowter, 13 is a screw, 14 is a gear pump, 15 is a spinneret, 16 is cooling air, 17 is green fiber, 18 is ultraviolet light, and 19 is a winder.
【００１４】ポリプロピレンまたはポリエチレンなどの
熱可塑性樹脂に、分散剤とともにＮｉ微粉などの金属粉
を混合溶融し、それを数ｍｍのチップに切断してホッパ
１１に投入する。チップはスクリュ１３により移動する
が、この間加熱されて溶融し、脱泡されてキヤポンプ１
４に送られる。ギヤポンプ１４で定量された金属粉と樹
脂の混合物は、紡糸口金１５を経て空気中に押し出され
る。側面から冷却空気１６を均一に吹き付けて凝固させ
て、グリーン繊維１７にする。グリーン繊維１７に紫外
線１８を１方向または両方向からグリーン繊維の全表面
に均一に当るように照射する。紫外線１８を照射すると
熱可塑性の樹脂は硬化し、熱可塑性が失われ、加熱して
も溶融することがなくなり、原形を保ったままの脱脂・
焼結が可能になる。A thermoplastic resin such as polypropylene or polyethylene is mixed and melted with a dispersant and a metal powder such as Ni fine powder, which is cut into chips of several mm and put into the hopper 11. The chips move by the screw 13, but during this time they are heated and melted and degassed, and the pump 1
Sent to 4. The mixture of the metal powder and the resin, which is determined by the gear pump 14, is extruded into the air through the spinneret 15. Cooling air 16 is evenly blown from the side surface to solidify and form green fibers 17. The green fiber 17 is irradiated with ultraviolet rays 18 from one direction or both directions so as to uniformly hit the entire surface of the green fiber. When irradiated with ultraviolet rays 18, the thermoplastic resin hardens, loses its thermoplasticity, does not melt even when heated, and degreases while maintaining its original shape.
Sintering becomes possible.
【００１５】紫外線１８を照射して硬化したグリーン繊
維１７に、一定の張力を与えて、ガイドロールなどを経
て巻取機１９により巻き取る。The green fiber 17, which has been cured by being irradiated with the ultraviolet rays 18, is given a constant tension, and is wound by a winder 19 through a guide roll or the like.
【００１６】金属短繊維を製造する場合には、グリーン
繊維を適当な長さに切断してから脱脂・焼結する。金属
長繊維を製造する場合には、グリーン繊維を切断するこ
となく脱脂・焼結するがその際、直径が１０〜２０％減
少し、長さが５０〜７０％減少するので自由に縮ませる
ような状態、例えば綿状にして焼結するようにしないと
焼結時に切れてしまう。When producing short metal fibers, the green fibers are cut into an appropriate length and then degreased and sintered. When producing long metal fibers, the green fibers are degreased and sintered without cutting, but at that time, the diameter is reduced by 10 to 20% and the length is reduced by 50 to 70%. If it is not in such a state, for example, in the form of cotton and is not sintered, it will break during sintering.
【００１７】次に、請求項２記載の発明について説明す
る。本発明が請求項１記載の発明と異るのは、図２
（Ｂ）に示すようにグリーン繊維の再溶融防止のため、
紫外線照射の代りにグリーン繊維に１〜３μｍ厚さの金
属メッキ処理をすることであり、他は同じなので重複し
た説明を省略する。Next, the invention according to claim 2 will be described. The present invention differs from the invention according to claim 1 in that
As shown in (B), to prevent re-melting of the green fiber,
Instead of UV irradiation, the green fiber is subjected to a metal plating process with a thickness of 1 to 3 μm, and the other processes are the same, so duplicated description will be omitted.
【００１８】[0018]
【実施例】以下、請求項１記載の発明の金属繊維の製造
方法について、具体的に説明する。２μｍのＮｉ微粉と
熱可塑性樹脂の粉末プロピレンとを重量比で８０／２０
（見かけの体積比で５０／５０）で混合し、２３０℃に
加熱混合後４００μｍのノズルから押し出し、繊維状に
成形後再度２００℃に加熱し引張加工を行って１００μ
ｍ径のＮｉグリーン繊維を製造した。EXAMPLES The method for producing metal fibers according to the first aspect of the present invention will be specifically described below. 80/20 in weight ratio of 2 μm Ni fine powder and thermoplastic resin powder propylene
Mix at (apparent volume ratio 50/50), heat and mix at 230 ° C., extrude from nozzle of 400 μm, form into fibrous shape, heat again to 200 ° C. and perform tensile processing to 100 μm.
An m green Ni green fiber was produced.
【００１９】成形後グリーン繊維の焼成処理時の再溶融
防止を目的に紫外線を照射した。紫外線照射による硬化
は、ウシオ電気製のスポット紫外線照射装置（紫外線照
度ｍａｘ ４Ｗ／ｃｍ2 ）を用いて１分間照射して行っ
た。After molding, the green fiber was irradiated with ultraviolet rays for the purpose of preventing remelting during the firing process. Curing by ultraviolet irradiation was performed by irradiating for 1 minute using a spot ultraviolet irradiation device (ultraviolet illuminance max 4 W / cm 2 ) manufactured by Ushio Electric.
【００２０】紫外線照射による再溶融防止処理を行った
グリーン繊維を１０％Ｈ2 ーＮ2 雰囲気炉で１０５０
℃、３０分間の脱脂・焼結を行って、直径９０μｍのＮ
ｉ繊維を製造した。The green fiber which has been subjected to remelting prevention treatment by ultraviolet irradiation is subjected to 1050 in a 10% H 2 —N 2 atmosphere furnace.
After degreasing and sintering at 30 ° C for 30 minutes, N with a diameter of 90 μm
i-fibers were produced.
【００２１】また、上記の２μｍのＮｉ微粉１００％に
代えて、市販の電解Ｃｒ粉を２μｍまで粉砕後、２μｍ
のＮｉ微粉に１０ｗｔ％混合したものを使用して、上記
と同様の方法でＮｉ−Ｃｏ繊維を製造した。In place of 100% of the Ni fine powder of 2 μm, a commercially available electrolytic Cr powder was pulverized to 2 μm and then 2 μm.
Ni-Co fiber was manufactured by the same method as described above using a mixture of Ni fine powder of 10 wt%.
【００２２】次に、請求項２記載の発明の金属繊維の製
造方法について、具体的に説明する。２μｍのＮｉ微粉
と熱可塑性樹脂の粉末プロピレンとを重量比で７０／３
０（見かけ体積比で３０／７０）で混合し、２３０℃で
加熱混合後４００μｍのノズルから押し出し繊維状に成
形後再度２００℃で加熱し、引張加工を行って５０μｍ
径のＮｉグリーン繊維を製造した。Next, the method for producing the metal fiber according to the second aspect of the present invention will be specifically described. The weight ratio of 2 μm Ni fine powder and thermoplastic resin powder propylene is 70/3.
0 (30/70 in apparent volume ratio), heated and mixed at 230 ° C., extruded from a nozzle of 400 μm, molded into a fibrous shape, heated again at 200 ° C., stretched to 50 μm
Diameter Ni green fibers were produced.
【００２３】成形後のグリーン繊維の焼成処理時の再溶
融防止を目的として無電解メッキ処理をした。メッキ条
件は下記の通りである。
無電解メッキ溶 メルテックス社製のメルプレートＮ
ｉー８６５をイオン交換水で１／４に希釈した。
処理温度 ９０℃
処理時間 ５分
メッキ厚さ １〜３μｍAn electroless plating treatment was carried out for the purpose of preventing remelting during the firing treatment of the green fiber after molding. The plating conditions are as follows. Electroless plating melt Melplate N manufactured by Meltex
i-865 was diluted to 1/4 with deionized water. Processing temperature 90 ° C Processing time 5 minutes Plating thickness 1-3 μm
【００２４】メッキによる再溶融防止処理を行ったグリ
ーン繊維を１０％Ｈ2 −Ｎ2 雰囲気炉で１０５０℃、３
０分間の脱脂・焼結を行って直径４０μｍのＮｉ繊維を
製造した。The green fiber subjected to the remelting prevention treatment by plating was heated at 1050 ° C. for 3 hours in a 10% H 2 —N 2 atmosphere furnace.
Degreasing and sintering were performed for 0 minutes to manufacture Ni fibers having a diameter of 40 μm.
【００２５】本発明は、以上述べた実施形態や実施例に
限定されるものではなく、発明の要旨を逸脱しない範囲
で種々の変更が可能である。例えばここで金属はＮｉに
限らずＣｕ、Ｆｅ、Ｃｏなど、またはそれらの合金でも
よいし、金属微粉は２以上の異種の金属微粉の混合物ま
たは金属微粉とセラミックス微粉の混合物であってもよ
い。たとえば、Ｎｉ微粉とＣｏ微粉、Ｎｉ微粉とアルミ
ナ微粉、Ｎｉ微粉とＣｒ2 ０3 微粉、Ｃｕ微粉とＷＣ微
粉、Ｃｕ微粉とアルミナ微粉などであってもよい。メッ
キの方法も無電解メッキに限らず、ＣＶＰ、ＰＶＰなど
でもよい。なお、ＰＶＤ、ＣＶＤは装置を含め製造コス
トが高くつくことになる。The present invention is not limited to the embodiments and examples described above, and various modifications can be made without departing from the gist of the invention. For example, the metal is not limited to Ni but may be Cu, Fe, Co or the like, or an alloy thereof, and the metal fine powder may be a mixture of two or more different kinds of metal fine powder or a mixture of metal fine powder and ceramic fine powder. For example, Ni fine powder and Co fines, Ni fine and fine alumina powder, Ni fine powder and Cr 2 0 3 fine, Cu fine powder and WC fine powder, it may be a Cu fine and fine alumina powder. The plating method is not limited to electroless plating, and CVP, PVP or the like may be used. It should be noted that PVD and CVD are expensive to manufacture including devices.
【００２６】[0026]
【発明の効果】以上述べたように、本発明の金属繊維の
製造方法は金属微粉を焼成する際の結合剤として安価な
熱可塑性樹脂を使用しているので、製造コストが安価に
できるとともに、グリーン繊維にＰＶＤなど有機溶剤の
溶媒を必要とする樹脂を使用していないので、溶媒が抜
けた部分が孔となりグリーン繊維が切れやすいといった
ことがなく焼成後強固な繊維が得られるなどの優れた効
果を有する。As described above, in the method for producing a metal fiber of the present invention, since an inexpensive thermoplastic resin is used as a binder when firing fine metal powder, the production cost can be reduced and Since the green fiber does not use a resin such as PVD that requires a solvent of an organic solvent, it is excellent in that a strong fiber can be obtained after firing without the portion where the solvent is removed becoming a hole and the green fiber is not easily cut. Have an effect.
【図１】溶融紡糸法の説明図である。FIG. 1 is an explanatory diagram of a melt spinning method.
【図２】本発明の金属繊維の製造方法のフローシートで
ある。FIG. 2 is a flow sheet of the method for producing metal fibers of the present invention.
１２ エクストルーダ １７ グリーン繊維 １８ 紫外線 12 extruder 17 Green Fiber 18 UV
フロントページの続き Ｆターム(参考） 4K017 AA02 BA03 BB17 CA04 CA07 DA01 DA09 EA13 EK08 FA01 4L037 CS09 CS10 PA44 PF26 PS03 PS07 UA12 UA20 Continued front page F-term (reference) 4K017 AA02 BA03 BB17 CA04 CA07 DA01 DA09 EA13 EK08 FA01 4L037 CS09 CS10 PA44 PF26 PS03 PS07 UA12 UA20
Claims (6)
の熱可塑性樹脂に金属微粉を混合後押し出し成形する溶
融紡糸法によりグリーン繊維にする工程と、グリーン繊
維に紫外線を照射して硬化させ樹脂が熱可塑性を持たな
いようにする工程と、樹脂が硬化したグリーン繊維を還
元性雰囲気で脱脂して焼結する工程を有することを特徴
とする金属繊維の製造方法。1. A step of forming a green fiber by a melt-spinning method in which fine metal powder is mixed with a thermoplastic resin such as polyethylene or polypropylene and then extruded and molded, and the green fiber is irradiated with ultraviolet rays to be cured so that the resin has no thermoplasticity. And a step of degreasing and sintering the green fiber in which the resin is hardened in a reducing atmosphere, and a method for producing a metal fiber.
の熱可塑性樹脂に金属微粉を混合後押し出し成形する溶
融紡糸法によりグリーン繊維にする工程と、グリーン繊
維に金属メッキ処理をする工程と、金属メッキしたグリ
ーン繊維を還元性雰囲気で脱脂して焼結する工程を有す
ることを特徴とする金属繊維の製造方法。2. A step of forming a green fiber by a melt-spinning method in which a fine metal powder is mixed with a thermoplastic resin such as polyethylene or polypropylene and then extrusion-molded, a step of subjecting the green fiber to a metal plating treatment, and a step of subjecting the metal-plated green fiber to A method for producing a metal fiber, comprising a step of degreasing and sintering in a reducing atmosphere.
は、金属微粉／樹脂＝９０／１０〜６０／４０である請
求項１または請求項２記載の金属繊維の製造方法。3. The method for producing a metal fiber according to claim 1, wherein a mixing weight ratio of the fine metal powder and the thermoplastic resin is fine metal powder / resin = 90/10 to 60/40.
求項３記載の金属繊維の製造方法。4. The method for producing a metal fiber according to claim 1, wherein the metal is Ni.
請求項１ないし請求項４記載の金属繊維の製造方法。5. The method for producing a metal fiber according to claim 1, wherein the fine metal powder has an average particle diameter of 1 to 3 μm.
合物または金属微粉とセラミックス微粉の混合物である
請求項５記載の金属繊維の製造方法。6. The method for producing metal fibers according to claim 5, wherein the metal fine powder is a mixture of two or more different metal fine powders or a mixture of metal fine powder and ceramic fine powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10226989A JP2000064125A (en) | 1998-08-11 | 1998-08-11 | Metal fiber manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10226989A JP2000064125A (en) | 1998-08-11 | 1998-08-11 | Metal fiber manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000064125A true JP2000064125A (en) | 2000-02-29 |
Family
ID=16853774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10226989A Pending JP2000064125A (en) | 1998-08-11 | 1998-08-11 | Metal fiber manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000064125A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015006697A1 (en) * | 2013-07-11 | 2015-01-15 | Heikkila Kurt E | Surface modified particulate and sintered extruded products |
-
1998
- 1998-08-11 JP JP10226989A patent/JP2000064125A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015006697A1 (en) * | 2013-07-11 | 2015-01-15 | Heikkila Kurt E | Surface modified particulate and sintered extruded products |
| US20150080495A1 (en) * | 2013-07-11 | 2015-03-19 | Kurt E. Heikkila | Surface modified particulate and sintered or injection molded products |
| US9512544B2 (en) | 2013-07-11 | 2016-12-06 | Tundra Composites, LLC | Surface modified particulate and sintered or injection molded products |
| US10052691B2 (en) | 2013-07-11 | 2018-08-21 | Tundra Composites, LLC | Surface modified particulate and sintered or injection molded products |
| US10328491B2 (en) | 2013-07-11 | 2019-06-25 | Tundra Composites, LLC | Surface modified particulate and sintered or injection molded products |
| US10456836B2 (en) | 2013-07-11 | 2019-10-29 | Tundra Composites, LLC | Surface modified particulate and sintered or injection molded products |
| US11000895B2 (en) | 2013-07-11 | 2021-05-11 | Tundra Composits, LLC | Surface modified particulate and sintered or injection molded products |
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