JP7467681B2 - 電磁溶接での使用のためのファイバー強化複合ラミネート及びこのラミネート製の成形パーツの電磁溶接方法 - Google Patents
電磁溶接での使用のためのファイバー強化複合ラミネート及びこのラミネート製の成形パーツの電磁溶接方法 Download PDFInfo
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- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C70/06—Fibrous reinforcements only
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- B29C70/22—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
- B29C70/882—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding
- B29C70/885—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding with incorporated metallic wires, nets, films or plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B29L2031/3076—Aircrafts
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- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Description
複数の構造レイヤーは、2つの隣接して位置した構造レイヤーの第1、第2、及び、オプションとして第3のペアを含み、
第1ペアは、当該ペアの2つの構造レイヤーの間に位置する中間レイヤーを有し、当該中間レイヤーは、第1ペアの2つの構造レイヤーの間で渦電流が流れることを実質的に許す面外の電気的な体積抵抗R1を有し、
第2ペアは、当該ペアの2つの構造レイヤーの間に位置する中間レイヤーを有し、当該中間レイヤーは、第2ペアの2つの構造レイヤーの間で渦電流が流れることを実質的に阻止する面外の電気的な体積抵抗R2を有し、
第3ペアは、当該ペアの2つの構造レイヤーの間に中間レイヤーを有さず;
更には、R1及びR2が有限、かつ0<R1<R2である。
各ペアの中間レイヤーは、各ペアにおける2つの構造レイヤーとは、好適には、各ペアの中間レイヤーが導電性ファイバーを備えない点で異なる。従って、各中間レイヤーは、構造的又は耐荷重機能を果たさず、又は、ただ微弱な程度で果たす。
R1=ρ1×t/A (1)
ここでは、ρ1は、オーム・mでの中間レイヤーの材料の電気的な体積抵抗率であり、tは、中間レイヤーの平均厚であり、Aは、電流が流れる面積である。面積Aは、ラミネートの表面積におおよそ等しい。これから、面外の電気的な体積抵抗R1は、中間レイヤーの材料(の電気的な抵抗率)、及び/又は、中間レイヤーの平均厚tの選択により影響を受け得ることになる。上限R2は、ラミネートに第2ペアを設け、そのようなラミネートに電磁界により生成された熱を観察することにより決定され得る。
Claims (15)
- ラミネート製の成形パーツの電磁溶接で用いられるファイバー強化複合ラミネートにして、熱可塑性基材に埋設された導電性ファイバーから各々が形成された複数の構造レイヤーを備え、電磁界を生成する導電体によって前記導電性ファイバーに渦電流が誘導されるラミネートであって、
前記複数の構造レイヤーは、2つの隣接して位置した構造レイヤーの第1、第2、及び、オプションとして第3のペアを含み、
前記第1ペアは、当該ペアの前記2つの構造レイヤーの間に位置する中間レイヤーを有し、当該中間レイヤーは、前記第1ペアの前記2つの構造レイヤーの間で渦電流が流れることを実質的に許す面外の電気的な体積抵抗R 1 を有し、
前記第2ペアは、当該ペアの前記2つの構造レイヤーの間に位置する中間レイヤーを有し、当該中間レイヤーは、前記第2ペアの前記2つの構造レイヤーの間で渦電流が流れることを実質的に阻止する面外の電気的な体積抵抗R 2 を有し、
オプションの前記第3ペアは、当該ペアの2つの構造レイヤーの間に中間レイヤーを有さず;
更には、前記R 1 及びR 2 が有限、かつ0<R 1 <R 2 であり、
各第1及び第2ペアの前記中間レイヤーは、各第1及び第2ペアにおける前記2つの構造レイヤーとは、各第1及び第2ペアの前記中間レイヤーが前記導電性ファイバーを備えない点で異なり、
ρ 1 ×t 1 <ρ 2 ×t 2 とすることでR 1 <R 2 が達成され、ここで、ρ 1 は、前記第1ペアの前記中間レイヤーの材料の電気的な体積抵抗率であり、t 1 は、前記第1ペアの前記中間レイヤーの平均厚であり、ρ 2 は、前記第2ペアの前記中間レイヤーの材料の電気的な体積抵抗率であり、t 2 は、前記第2ペアの前記中間レイヤーの平均厚であり、
前記ラミネートは、電磁的に溶接可能な外面を有し、前記第1ペアは、前記ラミネートの面外方向において前記ラミネートの溶接可能な外側で前記ラミネートに設けられる、ラミネート。 - ラミネート製の成形パーツの電磁溶接で用いられるファイバー強化複合ラミネートにして、熱可塑性基材に埋設された導電性ファイバーから各々が形成された複数の構造レイヤーを備え、電磁界を生成する導電体によって前記導電性ファイバーに渦電流が誘導されるラミネートであって、
前記複数の構造レイヤーは、2つの隣接して位置した構造レイヤーの第1、第2、及び、オプションとして第3のペアを含み、
前記第1ペアは、当該ペアの前記2つの構造レイヤーの間に位置する中間レイヤーを有し、当該中間レイヤーは、前記第1ペアの前記2つの構造レイヤーの間で渦電流が流れることを実質的に許す面外の電気的な体積抵抗R 1 を有し、
前記第2ペアは、当該ペアの前記2つの構造レイヤーの間に位置する中間レイヤーを有し、当該中間レイヤーは、前記第2ペアの前記2つの構造レイヤーの間で渦電流が流れることを実質的に阻止する面外の電気的な体積抵抗R 2 を有し、
オプションの前記第3ペアは、当該ペアの2つの構造レイヤーの間に中間レイヤーを有さず;
更には、前記R 1 及びR 2 が有限、かつ0<R 1 <R 2 であり、
各第1及び第2ペアの前記中間レイヤーは、各第1及び第2ペアにおける前記2つの構造レイヤーとは、各第1及び第2ペアの前記中間レイヤーが前記導電性ファイバーを備えない点で異なり、
ρ 1 ×t 1 <ρ 2 ×t 2 とすることでR 1 <R 2 が達成され、ここで、ρ 1 は、前記第1ペアの前記中間レイヤーの材料の電気的な体積抵抗率であり、t 1 は、前記第1ペアの前記中間レイヤーの平均厚であり、ρ 2 は、前記第2ペアの前記中間レイヤーの材料の電気的な体積抵抗率であり、t 2 は、前記第2ペアの前記中間レイヤーの平均厚であり、
前記第2ペアの少なくとも前記中間レイヤーが、厚み較正ガーゼ又はメッシュといった形態の非導電性ファイバーを備える、ラミネート。 - 前記ラミネートは、電磁的に溶接可能な外面を有し、前記第2又はオプションの前記第3ペアの一つは、前記ラミネートの溶接可能な外側の反対の外側、或いは内側で前記ラミネートに設けられる、請求項1又は2に記載のラミネート。
- 前記第1、前記第2及び/又はオプションの前記第3ペアの前記構造レイヤーの少なくとも一つにおける前記導電性ファイバーは、前記隣接した構造レイヤーの少なくとも一つにおいて局所的に途絶する、請求項1乃至3のいずれか一項に記載のラミネート。
- 前記第1、前記第2及び/又はオプションの前記第3ペアの2つの前記構造レイヤーにおける前記導電性ファイバーが、前記ペアの一つの構造レイヤーにおけるラインと、前記ペアの他方の隣接したレイヤーにおける別のラインに沿って局所的に途絶し、両ラインがお互いに交差する、請求項4に記載のラミネート。
- 前記第1及び/又はオプションの前記第3ペアの前記導電性ファイバーが局所的に途絶する、請求項4又は5に記載のラミネート。
- 前記構造レイヤーにおける前記導電性ファイバーは、一定方向に配向される、請求項1乃至6のいずれか一項に記載のラミネート。
- 前記第1ペアの前記中間レイヤーは、熱可塑性ポリマーを含み、0.05mmと0.15mmの間、より好ましくは、0.07mmと0.12mmの間の平均厚を有し、前記第2ペアの前記中間レイヤーは、熱可塑性ポリマーを含み、0.20mmよりも大きい平均厚を有する、請求項1乃至7のいずれか一項に記載のラミネート。
- 前記構造レイヤーが厚みを有し、基材ポリマー豊富エリアが幾つかの前記構造レイヤーの片側又は両側で前記厚みの一部上を延びる、請求項1乃至8のいずれか一項に記載のラミネート。
- 前記第1及び/又は第2ペアの前記中間レイヤーは、当該ペアの前記隣接した構造レイヤーの少なくとも一つの前記基材ポリマー豊富エリアにより形成される、請求項9に記載のラミネート。
- 前記第1ペアの前記中間レイヤーは、前記第1ペアの前記2つの構造レイヤーの間に渦電流が流れることを実質的に許す前記面外の電気的な体積抵抗R1を調整するために熱可塑性ポリマーに埋設された導電性粒子を備える、請求項1乃至10のいずれか一項に記載のラミネート。
- 隣接した構造レイヤーの前記第1及び/又は第2ペアの前記中間レイヤーの材料は、ASTM D257で測定される時、1015Ω・cmと20×1015Ω・cmの間の電気的な体積抵抗率を有する、請求項1乃至11のいずれか一項に記載のラミネート。
- 請求項1乃至12のいずれか一項に記載のラミネート製の成形パーツを電磁溶接するための方法であって、当該方法は:
前記成形パーツの溶接可能な外面同士をお互いに接触させて接触面を画定すること;
交番電圧の下で電磁界を生成して前記成形パーツの前記導電性ファイバーを加熱し、各成形パーツの前記第2ペアの前記構造レイヤーの基材ポリマーがその溶融温度を超えて維持されるべくインダクタを提供すること;及び
各成形パーツの前記第1及びオプションの前記第3ペアの前記構造レイヤーの基材ポリマーをその溶融温度未満に維持すること;及び
オプションとして、前記成形パーツを一緒に加圧することを含む、方法。 - 前記インダクタは、前記成形パーツの前記接触面に対して経路に沿って動かされ、前記導電性ファイバーが、前記接触面の所定部分において加熱される、請求項13に記載の方法。
- 前記インダクタは、少なくとも溶接の方向において実質的に円柱状の電磁界を生成するリニア誘導セグメントを備える、請求項13又は14に記載の方法。
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KR20230005332A (ko) | 2023-01-09 |
WO2021221510A1 (en) | 2021-11-04 |
BR112022021896A2 (pt) | 2022-12-20 |
EP4143012A1 (en) | 2023-03-08 |
JP2023524955A (ja) | 2023-06-14 |
US20230166458A1 (en) | 2023-06-01 |
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CN115996833A (zh) | 2023-04-21 |
CA3176022A1 (en) | 2021-11-04 |
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