JP6863539B1 - 炭素繊維強化成形材料及び成形品の製造方法 - Google Patents
炭素繊維強化成形材料及び成形品の製造方法 Download PDFInfo
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- JP6863539B1 JP6863539B1 JP2020562216A JP2020562216A JP6863539B1 JP 6863539 B1 JP6863539 B1 JP 6863539B1 JP 2020562216 A JP2020562216 A JP 2020562216A JP 2020562216 A JP2020562216 A JP 2020562216A JP 6863539 B1 JP6863539 B1 JP 6863539B1
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- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
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- 239000000326 ultraviolet stabilizing agent Substances 0.000 description 1
- 125000005287 vanadyl group Chemical group 0.000 description 1
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- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- 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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- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
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- B29C70/28—Shaping operations therefor
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C2037/90—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/10—Thermosetting resins
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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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- B29K2307/00—Use of elements other than metals as reinforcement
- B29K2307/04—Carbon
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
- B29K2995/0008—Magnetic or paramagnetic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
Description
本願は、2019年6月5日に、日本に出願された特願2019−105295に基づき優先権を主張し、その内容をここに援用する。
温度計、窒素導入管、撹拌機を設けた2Lフラスコに、エポキシ樹脂(DIC株式会社製「エピクロン850」、ビスフェノールA型エポキシ樹脂、エポキシ当量188)661質量部、ビスフェノールA 58.8質量部、及び2−メチルイミダゾール0.36質量部を仕込み、120℃に昇温して3時間反応させ、エポキシ当量を測定した。エポキシ当量が設定通り240になったことを確認後、60℃付近まで冷却した後、メタクリル酸253質量部、及びt−ブチルハイドロキノン0.28質量部を仕込み、窒素と空気とを1対1で混合したガス流通下で、90℃まで昇温した。ここに2−メチルイミダゾール0.25質量部を入れ、110℃に昇温して10時間反応させると、酸価が6以下になったので、反応を終了した。60℃付近まで冷却した後、反応容器より取り出し、水酸基価206mgKOH/gのビニルエステル樹脂(1)を得た。
上記で得たビニルエステル樹脂(1)55質量部をフェノキシエチルメタクリレート45質量部に溶解させた樹脂溶液100質量部に、エチレン尿素1.5質量部、ポリイソシアネート(三井化学株式会社製「コスモネートLL」、以下、「ポリイソシアネート(1)」と略記する。)20質量部、及び重合開始剤(化薬アクゾ株式会社製「カヤカルボンAIC−75」、有機過酸化物、以下、「重合開始剤(1)」と略記する。)1部を混合し、樹脂組成物(1)を得た。
製造例1の炭素繊維含有率を50質量%から40質量%に変更した以外は製造例1と同様に炭素繊維強化成形材料(X−2)を得た。
上記で得られた炭素繊維強化成形材料(X−1)をフィルムから剥離し、210mm×210mmにカットしたものを4枚重ねた上に金属異物(1)を載せ、微小金属検出機(ニッカ電測株式会社製「NT2R−K4B」、磁気センサー式)の搬送ベルトの上に置き、20m/minにて搬送した。警報が鳴り、金属異物(1)を検出した。
次に、搬送した210mm角の炭素繊維強化成形材料の上の金属異物(1)を取り除き、微小金属検出機(ニッカ電測株式会社製「NT2R−K4B」、磁気センサー式)の搬送ベルトの上に置き、20m/minにて搬送した。警報はならず、金属異物は検出されなかった。
この結果から搬送した210mm角の炭素繊維強化成形材料には金属異物が含まれていないと判断し、30×30cm2の平板金型の中央に210mm角の炭素繊維強化成形材料をセットし、プレス金型温度150℃、プレス時間5分間、プレス圧力10MPaで成形し、厚さ約3mmの平板状の成形品を得た。
上記で得られた成形品から水平方向及び垂直方向にサンプル5本ずつ切り出し、JIS K7074に準拠し、3点曲げ試験を行い、曲げ強さ、曲げ弾性率を測定した。曲げ強さは350MPa、曲げ弾性率は25GPaであった。
実施例1で用いた炭素繊維強化成形材料(X−1)を炭素繊維強化成形材料(X−2)に変更した以外は実施例1と同様にして、金属異物の探知及び成形可否の判断を行った。炭素繊維強化成形材料(2)の上に金属異物(1)がある場合にのみ、警報が鳴り、金属異物(1)を検出した。さらに、金属異物(1)を除去したものを、実施例1と同様に成形し、成形品の曲げ強さ及び曲げ弾性率を評価した。曲げ強さは300MPa、曲げ弾性率は21GPaであった。
上記で得られた炭素繊維強化成形材料(X−1)をフィルムから剥離し、210mm×210mmにカットしたものを4枚重ねた上に金属異物(1)を載せ、金属探知機(日新電子工業株式会社製「LRG−150」、電磁誘導式)の搬送ベルトの上に置き、20m/minで搬送した。警報が鳴り、金属異物があると検出した。
次に、搬送した210mm角の炭素繊維強化成形材料の上の金属異物(1)を取り除き、金属探知機(日新電子工業株式会社製「LRG−150」、電磁誘導式)の搬送ベルトの上に置き、20m/minにて搬送した。警報が鳴り、金属異物があると検出した。
金属異物を除去したにも係わらず、金属異物があると判定されたため、金属異物により金型を破損する恐れがあると判断し、炭素繊維強化成形材料を成形することができず、成形品を得ることができなかった。
比較例1で用いた炭素繊維強化成形材料(X−1)を炭素繊維強化成形材料(X−2)に変更した以外は比較例1と同様にして、金属異物の探知及び成形可否の判断を行った。
比較例1と同様に、金属異物を除去したにも係わらず、金属異物があると判定されたため、金属異物により金型を破損する恐れがあると判断し、炭素繊維強化成形材料を成形することができず、成形品を得ることができなかった。
Claims (4)
- 成形材料中の金属の有無を磁気センサー式金属探知方法で検査する工程を含むことを特徴とする炭素繊維強化成形材料の製造方法。
- 前記磁気センサー式金属探知方法が、金属を帯磁マグネットにより帯磁させ、磁気センサーにて帯磁した金属が発する磁界を検知する方法である、請求項1に記載の炭素繊維強化成形材料の製造方法。
- 前記炭素繊維強化成形材料が、熱硬化性樹脂及び炭素繊維を含有するものである、請求項1又は2に記載の炭素繊維強化成形材料の製造方法。
- 請求項1〜3のいずれか1項に記載の製造方法で得られた炭素繊維強化成形材料を加熱圧縮成形して得られることを特徴とする成形品の製造方法。
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JPS6345584A (ja) | 1986-08-13 | 1988-02-26 | Toshiba Corp | 電磁誘導式異物検出装置 |
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US20170015060A1 (en) * | 2015-07-17 | 2017-01-19 | Lawrence Livermore National Security, Llc | Additive manufacturing continuous filament carbon fiber epoxy composites |
JP2019105295A (ja) | 2017-12-12 | 2019-06-27 | Thk株式会社 | 転がり案内装置および転がり案内装置に用いられる樹脂部材 |
JP2019219254A (ja) * | 2018-06-19 | 2019-12-26 | 帝人株式会社 | 複合材料の製造方法および複合材料の目付斑の検査方法 |
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Patent Citations (5)
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JPH04122645A (ja) * | 1990-09-13 | 1992-04-23 | Toshiba Mach Co Ltd | プリプレグ積層材の製造方法およびその装置 |
JP2000062838A (ja) * | 1998-08-25 | 2000-02-29 | Toray Ind Inc | 積層体および積層体の積層数検出方法 |
JP2007256119A (ja) * | 2006-03-23 | 2007-10-04 | Fujitsu Ltd | 検査装置、積層装置、及び検査方法 |
JP2016124102A (ja) * | 2014-12-26 | 2016-07-11 | 三菱レイヨン株式会社 | シートモールディングコンパウンドおよびそれを用いて得られる複合材料 |
WO2018070076A1 (ja) * | 2016-10-11 | 2018-04-19 | Dic株式会社 | 繊維強化成形材料及びそれを用いた成形品 |
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