JP6702536B2 - 炭素短繊維強化フィルム及び炭素短繊維強化構造体の製造方法 - Google Patents
炭素短繊維強化フィルム及び炭素短繊維強化構造体の製造方法 Download PDFInfo
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Landscapes
- Reinforced Plastic Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Nonwoven Fabrics (AREA)
- Paper (AREA)
Description
リンターパルプ(質量平均繊維長1.2mm)を、増幸産業社製マスコロイダー(登録商標、装置名:MKZA12)を用いて、磨砕処理を行い、ミクロフィブリル化セルロースを作製した。さらに高圧ホモジナイザー(BOS製MC2)を用い50MPaで4回処理した。ミクロフィブリル化セルロースの分散液(濃度0.5質量%)での粘度をB型粘度計(ローターNo.2、ローター回転数60rpm、温度23℃以上25℃以下)で測定したところ、170cpであった。
炭素短繊維:繊維径7μm、繊維長6mm
熱可塑性短繊維:繊維径4.5μm、繊維長3mm、未延伸PET繊維
(炭素短繊維不織布の製造)
表1の繊維配合比率で、分散濃度0.2質量%で5分間、繊維を水に分散して、90メッシュの円網型抄紙機で、速度3m/minで漉き上げて、表面温度150℃のヤンキードライヤーにて10秒乾燥し、目付量25g/m2、厚み150μm、幅40cm、長さ100mの炭素短繊維不織布を作製し、ロール状に巻き取った。
炭素短繊維不織布と熱可塑性フィルム(樹脂:PEEK)100μmを、360℃に加熱したロール対で、速度5m/min、線圧150N/mmで挟み込み、厚み115μmの炭素短繊維強化フィルムを作製した。
炭素短繊維不織布2と熱可塑性フィルム(樹脂:無延伸PP、東洋紡製、トーヨータック(登録商標)E−100、融点160℃)100μmを、210℃に加熱したロール対で、速度5m/min、線圧80N/mmで挟み込み、厚み115μmの炭素短繊維強化フィルムを作製した。
得られた炭素短繊維強化フィルム1及び2を、それぞれ、裁断し、熱プレス法により貼り合わせ、厚み4mmの炭素短繊維強化構造体として、長さ80mm、幅10mm試験片を5本切り出し、これに150℃で3時間熱処理を施した後、冷却して、万能材料試験機(株式会社ティー・エス・イー、装置名:オートコム(登録商標、AutoCOM)AC−100)でその曲げ弾性率を測定した。平均値の結果を表2に示した。
炭素短繊維とPEEK樹脂を質量比15/85で複合して、これを二軸延伸機で混練した後、長さ80mm、幅10mm、厚み4mmの試験片を、射出成形法によって作製し、これに280℃で3時間熱処理を施し、冷却後、実施例1と同様に曲げ弾性率を測定し、平均値を表2に示した。
炭素短繊維とホモタイプPP樹脂を質量比20/80で複合して、これを二軸延伸機で混練した後、長さ80mm、幅10mm、厚み4mmの試験片を、射出成形法によって作製し、これに150℃、3時間熱処理を施し、冷却後、実施例1と同様に曲げ弾性率を測定し、平均値を表2に示した。
Claims (2)
- 炭素短繊維を含有してなる不織布と熱可塑性フィルムとの積層体の両面からロールで加熱加圧処理することによって、該不織布と熱可塑性フィルムとを一体化する炭素短繊維強化フィルムの製造方法において、該不織布がミクロフィブリル化セルロースを含有することを特徴とする炭素短繊維強化フィルムの製造方法。
- 炭素短繊維を含有してなる不織布と熱可塑性フィルムとの積層体の両面からロールで加熱加圧処理することによって、該不織布と熱可塑性フィルムとを一体化して炭素短繊維強化フィルムを製造し、さらに、該炭素短繊維強化フィルムを複数枚貼り合わせる炭素短繊維強化構造体の製造方法において、該不織布がミクロフィブリル化セルロースを含有することを特徴とする炭素短繊維強化構造体の製造方法。
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JP7019534B2 (ja) * | 2018-08-22 | 2022-02-15 | 三菱製紙株式会社 | 炭素繊維不織布複合体 |
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GB2057350A (en) * | 1979-08-24 | 1981-04-01 | Ford Motor Co | Reinforced sheet plastics material |
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