JP2021004278A - 繊維強化成形材料及びそれを用いた成形品 - Google Patents
繊維強化成形材料及びそれを用いた成形品 Download PDFInfo
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- JP2021004278A JP2021004278A JP2019117314A JP2019117314A JP2021004278A JP 2021004278 A JP2021004278 A JP 2021004278A JP 2019117314 A JP2019117314 A JP 2019117314A JP 2019117314 A JP2019117314 A JP 2019117314A JP 2021004278 A JP2021004278 A JP 2021004278A
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- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 29
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 29
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Abstract
Description
攪拌機、コンデンサー、温度計及び滴下ロートを備えた4つ口2Lフラスコに、フェノール940g(10モル)及び80質量%パラホルムアルデヒドを281g(7.5モル)、更にキシレンを470g加え攪拌を開始した。触媒として酢酸亜鉛2水和物を4.7g加え、還流温度まで昇温した。5時間還流下にて反応させた後、蒸留を開始して水と溶剤であるキシレンを除去しつつ、130℃まで昇温した。130℃にて1時間保持した後、蒸留しながら150℃まで昇温した。さらに減圧下で遊離フェノールを一部除去した後、析出した触媒を濾過しながら取り出し、融点58℃の固形ノボラック型フェノール樹脂(A−1)を得た。このノボラック型フェノール樹脂(A−1)のオルソ−パラ比は6.6であった。
得られたノボラック型フェノール樹脂(A−1)の100質量部に対して、ジビニルベンゼン100質量部を50℃にて溶解させて、ノボラック型フェノール樹脂とジビニルベンゼンとの混合物(1)を得た。
得られたノボラック型フェノール樹脂(A−1)の115質量部に対して、ジビニルベンゼン85質量部を50℃にて溶解させて、ノボラック型フェノール樹脂とジビニルベンゼンとの混合物(2)を得た。
合成例1で得た混合物(1)100質量部(ノボラック型フェノール樹脂50質量部、ジビニルベンゼン50質量部)に、水酸化アルミニウム(日本軽金属社製「B103」、以下、「水酸化アルミニウム(C−1)」と略記する。)200質量部、4,4’−ジフェニルメタンジイソシアネート(DIC株式会社製、「ハイプロックスSP−292K」、ジフェニルメタンジイソシアネート変性体;以下、「ポリイソシアネート化合物(D−1)」と略記する。)10質量部、硬化促進剤(キシレン−4−スルホン酸水和物2質量部とクレゾール4質量部との混合物)6質量部を混合し、樹脂組成物(1)を得た。
上記で得られたシート状の繊維強化成形材料(1)をフィルムから剥離し、20cm×20cmにカットしたものを23×23cm2の平板金型の中央にセットし、プレス圧力15MPaでプレス金型温度上型125℃/下型115℃、プレス時間15分、その後プレス金型温度上型155℃/下型145℃、プレス時間15分、その後プレス金型温度上型185℃/下型175℃、プレス時間30分で成形し、厚み1.5mmの平板状の成形品(1)を得た。
上記で得られた成形品(1)の外観を観察し、以下の基準により成形性を評価した。
○:成形材料の流動性が良好であり、成形品に表面荒れ等の欠陥がみられない。
△:成形材料の流動性は良好であるが、成形品の一部に表面荒れ等の欠陥がみられる。
×:成形材料の流動性が不良であり、金型通りの成形品が得られない。
得られた成形品(1)を125mm×13mm×1.5mmにカットし、UL94燃焼試験のうち20mm垂直燃焼試験(IEC60695−11−10B,ASTM D3801)に準拠して測定を行い、難燃性を評価した。
実施例1で用いたポリイソシアネート化合物(D−1)10質量部を3質量部に変更した以外は、実施例1と同様にして、繊維強化成形材料(2)を作製し、成形性及び難燃性を評価した。
実施例1で用いたポリイソシアネート化合物(D−1)10質量部を15質量部に変更した以外は、実施例1と同様にして、繊維強化成形材料(3)を作製し、成形性及び難燃性を評価した。
実施例1で用いた水酸化アルミニウム(C−1)200質量部を120質量部に変更した以外は、実施例1と同様にして、繊維強化成形材料(4)を作製し、成形性及び難燃性を評価した。
実施例1で用いた水酸化アルミニウム(C−1)200質量部を210質量部に変更した以外は、実施例1と同様にして、繊維強化成形材料(5)を作製し、成形性及び難燃性を評価した。
実施例1で用いた混合物(1)を混合物(2)に変更した以外は、実施例1と同様にして、繊維強化成形材料(6)を作製し、成形性及び難燃性を評価した。
実施例1で用いたポリイソシアネート化合物(D−1)10質量部を1質量部に変更した以外は、実施例1と同様にして、繊維強化成形材料(7)を作製し、成形性及び難燃性を評価した。
実施例1で用いたポリイソシアネート化合物(D−1)10質量部を20質量部に変更した以外は、実施例1と同様にして、繊維強化成形材料(8)を作製し、成形性及び難燃性を評価した。
実施例1で用いた水酸化アルミニウム(C−1)200質量部を230質量部に変更した以外は、実施例1と同様にして、繊維強化成形材料(9)を作製し、成形性及び難燃性を評価した。
実施例1で用いたポリイソシアネート化合物(D−1)10質量部を0.5質量部に変更した以外は、実施例1と同様にして、繊維強化成形材料(R1)を作製し、成形性を評価した。なお、成形性が不良であったため、難燃性の評価は行わなかった。
実施例1で用いたポリイソシアネート化合物(D−1)10質量部を25質量部に変更した以外は、実施例1と同様にして、繊維強化成形材料(R2)を作製し、成形性を評価した。なお、成形性が不良であったため、難燃性の評価は行わなかった。
実施例1で用いた水酸化アルミニウム(C−1)200質量部を100質量部に変更した以外は、実施例1と同様にして、繊維強化成形材料(R3)を作製し、成形性及び難燃性を評価した。
実施例1で用いた水酸化アルミニウム(C−1)200質量部を250質量部に変更した以外は、実施例1と同様にして、繊維強化成形材料(R4)を作製し、成形性を評価した。なお、成形性が不良であったため、難燃性の評価は行わなかった。
Claims (5)
- ノボラック型フェノール樹脂(A)、ジビニルベンゼン化合物(B)、水酸化アルミニウム(C)、ポリイソシアネート化合物(D)、及び強化繊維(E)を含有する繊維強化成形材料であって、前記ノボラック型フェノール樹脂(A)と前記ジビニルベンゼン化合物(B)との合計100質量部に対し、前記水酸化アルミニウム(C)が110〜240質量部であり、前記ポリイソシアネート化合物(D)が1〜23質量部であることを特徴とする繊維強化成形材料。
- 前記ノボラック型フェノール樹脂(A)の芳香環を架橋するメチレン結合のオルソ−パラ比が、3以上である請求項1記載の繊維強化成形材料。
- 前記ノボラック型フェノール樹脂(A)の数平均分子量が300〜2,000である請求項1又は2記載の繊維強化成形材料。
- 前記ノボラック型フェノール樹脂(A)と前記ジビニルベンゼン化合物(B)との質量比(A/B)が40/60〜70/30である請求項1〜3のいずれか1項記載の繊維強化成形材料。
- 請求項1〜4のいずれか1項記載の繊維強化成形材料を用いた成形品。
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JPH051157A (ja) * | 1991-04-16 | 1993-01-08 | Dainippon Ink & Chem Inc | 硬化性プリプレグ及びそれを硬化した成形品 |
JPH08127706A (ja) * | 1994-10-31 | 1996-05-21 | Dainippon Ink & Chem Inc | 硬化性樹脂組成物、プリプレグ、コンパウンド及び硬化物 |
JPH08176403A (ja) * | 1994-12-21 | 1996-07-09 | Dainippon Ink & Chem Inc | 引き抜き成形用樹脂組成物 |
JPH09151228A (ja) * | 1995-11-29 | 1997-06-10 | Sumitomo Bakelite Co Ltd | 変性フェノール樹脂、及びフェノール樹脂成形材料 |
JP2005240026A (ja) * | 2004-01-26 | 2005-09-08 | Dainippon Ink & Chem Inc | 成形用樹脂組成物、これを含有する成形材料 |
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JPH051157A (ja) * | 1991-04-16 | 1993-01-08 | Dainippon Ink & Chem Inc | 硬化性プリプレグ及びそれを硬化した成形品 |
JPH08127706A (ja) * | 1994-10-31 | 1996-05-21 | Dainippon Ink & Chem Inc | 硬化性樹脂組成物、プリプレグ、コンパウンド及び硬化物 |
JPH08176403A (ja) * | 1994-12-21 | 1996-07-09 | Dainippon Ink & Chem Inc | 引き抜き成形用樹脂組成物 |
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CN115716963A (zh) * | 2022-11-25 | 2023-02-28 | 安徽百维新材料有限公司 | 一种高强度聚苯发泡保温板的生产方法 |
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