JP2015209512A - 摺動性樹脂成形品及び摺動部材形成用樹脂組成物 - Google Patents
摺動性樹脂成形品及び摺動部材形成用樹脂組成物 Download PDFInfo
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Abstract
Description
(1)樹脂組成物の作製
表1、2に示す組成で、以下に示すポリアミド樹脂、摺動剤、架橋剤を二軸混合機で混合して樹脂組成物を作製した。この樹脂組成物を成形して荷重たわみ温度測定用の未架橋試験片及び動摩擦係数測定用の未架橋試験片を作製した。このようにして得られた未架橋試験片に、電子線加速器により電子線をポリアミド66の場合は60kGy、ポリアミド46の場合は240kGy照射して、ポリアミド樹脂を架橋し、試験片を得た。
Stanyl TW341(商品名:ポリアミド46:DSM社製)
レオナ1402S(商品名:ポリアミド66:旭化成社製)
ミペロンXM220(商品名:超高分子量ポリエチレン:DEGUSA社製)
コスモオルパス460(商品名:コスモ石油社製機械油)
TAICROS(トリアリルイソシアヌレート:DEGUSA社製)
前記の「樹脂組成物の作製」にて得られた試験片(厚さ4mm、巾10mm、長さ80mm)を用い、ISO 75に準じて荷重たわみ温度を測定した(荷重1.8MPa)。その結果を表1〜2に示す。
前記の「樹脂組成物の作製」にて得られた試験片(厚さ2mm、巾40mm、長さ40mm)を用い、リングオンディスク式試験により摺動性を評価した。具体的には、下記の条件で、前記試験片(サンプル)上に置いた円筒(リング形状:外径/内径=11.6/7.4)を加圧しながら回転させて動摩擦係数を測定した。その結果を表1〜2に示す。
室温、荷重10kg、回転数65rpm、PV値3.0MPa・m/min
ポリアミド樹脂、摺動剤及び架橋剤を含有し、摺動剤の含有量がポリアミド樹脂の100質量部に対して1〜10質量部である樹脂組成物の成形体に電子線照射を施した実験例1〜3及び実験例6では、繊維状強化剤等の無機充填剤を含有しないにも係らず、動摩擦係数が0.35以下であり、荷重たわみ温度が摺動剤を含有しない場合(ポリアミド46を用いた場合の実験例8、ポリアミド66を用いた場合の実験例11)の90%を超える(すなわち、摺動性及び長期耐熱性に優れる)摺動性樹脂成形品が得られている。特にポリアミド樹脂として、ポリアミド46であるStanyl TW341を用いた実験例1では、150℃を超える荷重たわみ温度が得られており、近年の自動車用軸受に対する要請を満たすものが得られている。
摺動剤を、ポリアミド樹脂の100質量部に対して1〜10質量部の範囲で含有させた実験例5、7及び10では、動摩擦係数が0.35以下であり優れた摺動性が得られているが、電子線照射による樹脂の架橋がされていないため、荷重たわみ温度は、摺動剤を含有しない場合(ポリアミド46を用いた場合の実験例8、ポリアミド66を用いた場合の実験例11)より大きく低下(90%未満)している。
Claims (5)
- ポリアミド樹脂、摺動剤及び架橋剤を含有し、ポリアミド樹脂の100質量部に対する摺動剤の含有量が1〜10質量部である樹脂組成物の成形体であって、前記ポリアミド樹脂が電離放射線の照射により架橋されている摺動性樹脂成形品。
- 前記ポリアミド樹脂が、ポリアミド46を80質量%以上含有する請求項1に記載の摺動性樹脂成形品。
- 動摩擦係数が0.35以下であり、荷重たわみ温度が140℃以上である請求項1又は請求項2に記載の摺動性樹脂成形品。
- 前記架橋剤が、トリアリルイソシアヌレート又はトリメチロールプロパントリメタクリレートであり、その配合量がポリアミド樹脂100重量部に対して、1〜20重量部である請求項1ないし請求項3のいずれか1項に記載の摺動性樹脂成形品。
- ポリアミド樹脂、摺動剤及び架橋剤を含有し、ポリアミド樹脂の100質量部に対する摺動剤の含有量が1〜10質量部である摺動部材形成用樹脂組成物。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2018017268A (ja) * | 2016-07-26 | 2018-02-01 | 住友電工ファインポリマー株式会社 | 摺動部材、及び摺動部材の製造方法 |
WO2018131069A1 (ja) | 2017-01-10 | 2018-07-19 | 住友電工ファインポリマー株式会社 | 架橋樹脂成形体、摺動部材、ギア及び軸受け |
JP2018193436A (ja) * | 2017-05-15 | 2018-12-06 | バンドー化学株式会社 | 樹脂部材 |
JP2019183072A (ja) * | 2018-04-16 | 2019-10-24 | 旭化成株式会社 | ポリアミド樹脂組成物 |
WO2023032780A1 (ja) | 2021-09-01 | 2023-03-09 | Ube株式会社 | ポリアミド樹脂組成物 |
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JPH02112922A (ja) * | 1988-10-22 | 1990-04-25 | Unitika Ltd | ナイロン46吹込成形品 |
JP2002155154A (ja) * | 2000-11-21 | 2002-05-28 | Sumitomo Electric Fine Polymer Inc | 架橋型摺動性樹脂成型品 |
JP2004107526A (ja) * | 2002-09-19 | 2004-04-08 | Kuraray Co Ltd | ポリアミド組成物 |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2018017268A (ja) * | 2016-07-26 | 2018-02-01 | 住友電工ファインポリマー株式会社 | 摺動部材、及び摺動部材の製造方法 |
WO2018131069A1 (ja) | 2017-01-10 | 2018-07-19 | 住友電工ファインポリマー株式会社 | 架橋樹脂成形体、摺動部材、ギア及び軸受け |
KR20180091804A (ko) | 2017-01-10 | 2018-08-16 | 스미토모덴코파인폴리머 가부시키가이샤 | 가교 수지 성형체, 슬라이딩 부재, 기어 및 베어링 |
JP2018193436A (ja) * | 2017-05-15 | 2018-12-06 | バンドー化学株式会社 | 樹脂部材 |
JP2019183072A (ja) * | 2018-04-16 | 2019-10-24 | 旭化成株式会社 | ポリアミド樹脂組成物 |
JP2021120468A (ja) * | 2018-04-16 | 2021-08-19 | 旭化成株式会社 | ポリアミド樹脂組成物 |
JP7152558B2 (ja) | 2018-04-16 | 2022-10-12 | 旭化成株式会社 | ポリアミド樹脂組成物 |
WO2023032780A1 (ja) | 2021-09-01 | 2023-03-09 | Ube株式会社 | ポリアミド樹脂組成物 |
KR20240053615A (ko) | 2021-09-01 | 2024-04-24 | 유비이 가부시키가이샤 | 폴리아미드 수지 조성물 |
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