JP2017193155A - 高性能疲労抵抗や高断熱特性を持つガラス繊維強化樹脂発泡体を適用した運送体用構造体およびその製造方法 - Google Patents
高性能疲労抵抗や高断熱特性を持つガラス繊維強化樹脂発泡体を適用した運送体用構造体およびその製造方法 Download PDFInfo
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- JP2017193155A JP2017193155A JP2016130290A JP2016130290A JP2017193155A JP 2017193155 A JP2017193155 A JP 2017193155A JP 2016130290 A JP2016130290 A JP 2016130290A JP 2016130290 A JP2016130290 A JP 2016130290A JP 2017193155 A JP2017193155 A JP 2017193155A
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- foamed resin
- resin body
- fiber
- sandwich structure
- glass fiber
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Abstract
Description
1.S1の段階およびS2段階
図3a、3bは、本発明による運送体用サンドイッチ構造体の製造方法のS1段階ないしS2段階が行われる工程を図示する断面図で、図3a、3bを参照すると、ガラス長繊維で行われたGCSM(Glass Continuous Strand Mat)を型上においてポリウレタンを上記GCSM上に塗布する。
図3cは本発明による運送体用サンドイッチ構造体の製造方法のS3段階が行われる工程を図示する断面図で、図3cを参照すれば、上記GCSM上に塗布されたポリウレタンと所定の発泡剤の作用によってポリウレタンが発泡されて発泡樹脂体を製造する。
図4は、本発明による運送体用サンドイッチ構造体の製造方法のS4段階が行われる工程を図示する断面図で、図4を参照すれば、製造された発泡樹脂体を縦方向に30mm間隔でスライスする。
図5は、本発明による運送体用サンドイッチ構造体の製造方法のS5段階の物理的処理工程が行われる工程を図示する断面図で、図5を参照すれば、製造された発泡樹脂フォームの表面にガラス繊維が露出されるように切断機又は回転ブラシを使用して発泡樹脂フォームの発泡樹脂を取り除くことで、発泡樹脂フォームの表面にガラス繊維が平均2mmさらされるようにする。
ガラス繊維が露出された発泡樹脂体の両面に末端が発泡樹脂体上に露出されたガラス繊維のメッシュ(Glass Mesh)と繊維強化複合材料のためのガラス繊維織物(Glass fabric)を積層とビニールエステル樹脂で一体に成形して厚さが36mmの運送体用サンドイッチ構造体の製造を完了しており、その物性は以下[表1]に記載した。
芯材に発泡樹脂体フォームを適用する代わりに、従来の運送体用サンドイッチ構造体の芯材(コアとして使用されるAl Honeycomb core(Core size 3/8インチ、Alの厚さ70μm)を適用して、上記、実施例1のS6段階と同様の方法で運送体用サンドイッチ構造体を製造しており、その物性は以下[表1]に記載した。
S5段階を省略して発泡樹脂体フォームの表面に物理的・化学的処理する工程を除いては、上記、実施例1と同じ方法で運送体用サンドイッチ構造体を製造しており、その物性は以下[表1]に記載した。
製造された発泡樹脂体を横方向にスライスしてガラス繊維が長さ(水平)方向に配向されるようにした。以降、上記スライスされた発泡樹脂体の両面に繊維強化ボクハプジェヨンガラス繊維織物を積層し、ビニールエステル樹脂で一体に成形して厚さが36mmの運送体用サンドイッチ構造体の製造を完了しており、その物性は以下[表1]に記載した。
S1の段階およびS2段階を省略してGCSM(ガラス繊維)なくポリウレタンだけを発泡させた後、上記発泡樹脂体をスライスした。スライスされた発泡樹脂体の両面に繊維強化複合材料のためのガラス繊維織物を積層とビニールエステル樹脂で一体に成形して厚さが36mmの運送体用サンドイッチ構造体の製造を完了しており、その物性は以下[表1]に記載した。
(a)圧縮最大強度
圧縮最大強度は、発泡の方向に対して垂直または水平に発泡試験片の高さの10%を圧縮して強度を測定したものである。圧縮最大強度=圧縮力(荷重)/断面積であり、ASTM D1621によって測定した。
階間接着強度は、発泡の方向に対して垂直または水平にローディングブロックで接着した後、引張方向に切断が行われる実験である。階間接着強度=接着力(荷重)/断面積であり、ASTM C297によって測定した。
屈曲最大荷重は、サンドイッチ構造体の積層方向に曲げ試験を実施することで、破断が成し遂げている時までの最大荷重を測定したものである。 ASTM C393によって測定した。
屈曲最大変位は、サンドイッチ構造体の積層方向に曲げ試験を実施することで、破断が成し遂げている時までの最大延伸を測定したものである。 ASTM C393によって測定した。
屈曲疲労抵抗性能試験はASTM C393試験をベースとし、基準となる試験片の最大荷重90%の荷重として反復的に力を加えて試験片が破断なる時まで実験された反復された回数を示す。
断熱性能は物体の熱伝導率を測定することで、熱伝導率は熱流計法を利用して材料の熱伝導率を測定した。 ASTM C518の規格によって高温と低温プレート(Plate)の間に材料を入れて熱流束センサーを通じて熱伝導率を測定した。
Claims (11)
- 芯材(コア)を形成する判形状の発泡樹脂体;
上記発泡樹脂体の厚さ方向の片側もしくは両側側に位置した表面材を形成する繊維強化複合層;や
上記発泡樹脂体と繊維強化複合層の間に芯材と表面材の基層で行われて、
上記発泡樹脂体内には多数のガラス繊維が挿入され、
上記それぞれのガラス繊維と、上記発泡樹脂体の長さ方向が成す角の大きさが45度を超過して、90度以下を満足するガラス繊維の割合が全体のガラス繊維の70%以上であり、
上記のガラス繊維の一方または両方の末端が全体的に発泡樹脂体上に露出されて、露出されたガラス繊維が基層および繊維強化複合層に含浸および結合されたことを特徴とする運送体用サンドイッチ構造体。 - 上記のガラス繊維の露出した部分の高さが0.5〜10mmである請求項1記載の運送体用サンドイッチ構造体。
- 屈曲疲労抵抗性能が100,000以上であることを特徴とする請求項1記載の運送体用サンドイッチ構造体。
- 上記繊維強化複合層に使用される強化繊維はガラス繊維、カーボン繊維、アラミド繊維や合成纎維からなる群から選択された1種または2種以上の繊維であり、上記の強化繊維の形態は織物、一方向の織物、連続ストランドマット、チョップドストランドマット及びバルキーマットからなる群から選択された1種または2種以上の形態であることを特徴とする請求項1記載の運送体用サンドイッチ構造体。
- 多数のガラス繊維を型上に設けている段階;
上記多数のガラス繊維に発泡樹脂を塗布する段階;
上記発泡樹脂を発泡させ、内部にガラス繊維が挿入された発泡樹脂体を製造する段階;
上記発泡樹脂体を所定の厚さを持つように縦方向にスライスする段階;
上記スライスされた発泡樹脂体の一方または両方の末端に物理的または化学的処理を通じて上記発泡樹脂体末端部分の発泡樹脂を除去する段階;や
上記発泡樹脂体上に露出されたガラス繊維が繊維強化複合層に含浸なるように、上記のガラス繊維が露出された発泡樹脂体(芯材)および繊維強化複合層(表面材)を一体に成形する段階;を含む運送体用サンドイッチ構造体の製造方法。 - 上記発泡樹脂体の製造時使用される強化ガラス繊維の形態は連続ストランドマット、チョップドストランドマット、バルキーマット、織物及び一方向の織物からなる群から選択された1種または2種以上のもので、上記発泡樹脂体の製造時使用される発泡樹脂はポリウレタン樹脂、ポリイソシアヌレート樹脂、ポリスチレン樹脂、ポリエチレン樹脂やフェノール樹脂からなる群から選択された1種または2種以上の発泡樹脂であることを特徴とする請求項5記載の運送体用サンドイッチ構造体の製造方法。
- 上記スライスされた発泡樹脂体の一方または両方の末端部分の発泡樹脂を除去する物理的方法は、切断機を使用して切断程度を調整する方法及びブラシ、またはのみを使用する方法からなる群から選択された1種の方法であることを特徴とする請求項5記載の運送体用サンドイッチ構造体の製造方法。
- 上記スライスされた発泡樹脂体の一方または両方の末端部分の発泡樹脂を除去する化学的方法は、上記スライスされた発泡樹脂体片側や両側に、炭化水素系、ハロゲン化炭化水素、アルコール類、アルデヒド類、エーテル、エステル類、ケトン類及びグリコールエーテル系化合物からなる群から選択された1種または2種以上の有機化学溶剤を処理することを特徴とする請求項5記載の運送体用サンドイッチ構造体の製造方法。
- 上記のガラス繊維が露出された発泡樹脂体(芯材)、繊維強化複合層(表面材)を一体で成形するため、上記のガラス繊維が露出された発泡樹脂体と繊維強化複合層の間に、接着剤を使用して接着する方法及び上記のガラス繊維が露出された発泡樹脂体に繊維強化複合層を積層して合成樹脂を注入する方法からなる群から選択された1種の方法であることを特徴とする請求項5記載の運送体用サンドイッチ構造体の製造方法。
- 上記のガラス繊維が露出された発泡樹脂体(芯材)と繊維強化複合層(表面材)を積層して合成樹脂を注入する方法はハンドレイアップ、樹脂トランスファー成形、注入成形、オートクレーブ成形、真空バッグ成形やプレス圧縮成形からなる群から選択された1種または2種以上の方法の一つであり、上記の一体化成形用合成樹脂は不飽和のポリエステルの樹脂、ビニールエステル樹脂、エポキシ樹脂、ポリウレタン樹脂、フェノール樹脂、ポリエチレン樹脂、ナイロン樹脂、ポリアセタール樹脂、塩化ビニル樹脂、ポリスチレン樹脂及びABS樹脂からなる群から選択された1種または2種以上の樹脂のことを特徴とする請求項9記載の運送体用サンドイッチ構造体の製造方法。
- 請求項5〜10のいずれか1項記載の方法で製造された上記運送体用サンドイッチ構造体または芯材のための発泡樹脂体をノッチカットにより細かく切断し、複数の切断された片をドーナツ型(O型)、アーチ型(⊂型)及び円形からなる群から選択された1種の形で接着または一体化成形して曲面形状に加工した運送体用サンドイッチ構造体。
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| US20170021596A1 (en) * | 2015-05-05 | 2017-01-26 | Sunrez Corp. | Fiber Reinforced Core |
-
2016
- 2016-04-20 KR KR1020160048146A patent/KR101843006B1/ko active Active
- 2016-04-29 WO PCT/KR2016/004537 patent/WO2017183756A1/ko not_active Ceased
- 2016-06-15 EP EP16001350.4A patent/EP3235635B1/en active Active
- 2016-06-20 US US15/186,661 patent/US20170305107A1/en not_active Abandoned
- 2016-06-24 CN CN201610471357.7A patent/CN107303748B/zh active Active
- 2016-06-30 JP JP2016130290A patent/JP6273321B2/ja active Active
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2020
- 2020-04-29 US US16/861,853 patent/US11827005B2/en active Active
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| JPS4983366U (ja) * | 1972-11-13 | 1974-07-18 | ||
| JPS5038916U (ja) * | 1973-08-02 | 1975-04-22 | ||
| JPS5385875A (en) * | 1977-01-06 | 1978-07-28 | Naohito Nishida | Sandwich core material made of fiberrreinforced expanded material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848580A (zh) * | 2021-02-04 | 2021-05-28 | 河南银金达新材料股份有限公司 | 一种petg/pet共挤自热封多层膜及其制备方法 |
| CN112848580B (zh) * | 2021-02-04 | 2023-06-23 | 河南银金达新材料股份有限公司 | 一种petg/pet共挤自热封多层膜及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3235635B1 (en) | 2021-03-24 |
| US20170305107A1 (en) | 2017-10-26 |
| EP3235635A1 (en) | 2017-10-25 |
| US11827005B2 (en) | 2023-11-28 |
| CN107303748B (zh) | 2020-04-03 |
| US20200254717A1 (en) | 2020-08-13 |
| KR101843006B1 (ko) | 2018-03-29 |
| WO2017183756A1 (ko) | 2017-10-26 |
| KR20170119896A (ko) | 2017-10-30 |
| JP6273321B2 (ja) | 2018-01-31 |
| CN107303748A (zh) | 2017-10-31 |
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