JP2010007091A - パーフルオロポリエーテル油組成物 - Google Patents
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Abstract
【解決手段】(CF2O)n基を有するパーフルオロポリエーテル基油、好ましくは増稠剤添加パーフルオロポリエーテル基油にパーフルオロポリエーテル基を有するジ-またはモノ-脂肪族アミド系化合物をこれら各成分の合計量中0.01〜50重量%の割合で添加してなり、グラファイトまたは二硫化モリブデンを焼結成分とする焼結含油軸受に含浸して使用され、あるいはグラファイトまたは二硫化モリブデンを含有する金属部品と接触して使用されるパーフルオロポリエーテル油組成物。
【選択図】図1
Description
RfO(CF2O)x(C2F4O)y(C3F6O)zRf
で表わされるものが用いられ、ポリマーのくり返し単位として(CF2O)n基を有するものも有効に使用される。具体的には、例えば下記一般式(1)、(2)で表わされるようなものが用いられる。なお、Rfはパーフルオロメチル基、パーフルオロエチル基、パーフルオロプロピル基等の炭素数1〜5、好ましくは1〜3のパーフルオロ低級アルキル基である。
(1) RfO(CF2CF2O)m(CF2O)nRf
ここで、m+n=3〜200、m:n=10〜90:90〜10であり、またCF2CF2O基およびCF2O基は主鎖中にランダムに結合しているものであり、テトラフルオロエチレンの光酸化重合で生成した先駆体を完全にフッ素化することによって得られる。
(2) RfO[CF(CF3)CF2O]p(CF2CF2O)q(CF2O)rRf
ここで、p+q+r=3〜200でqおよびrは0であり得、(q+r):p=0〜2:1であり、またCF(CF3)CF2O基、CF2CF2O基およびCF2O基は主鎖中にランダムに結合しているものであり、ヘキサフルオロプロペンおよびテトラフルオロエチレンの光酸化重合で生成した先駆体を完全にフッ素化することにより得られる。
RCONHR1NHCOR [I]
R2NHCOR [II]
R2NHCOR′CONHR2 [III]
R1:炭素数1〜30のアルキレン基であり、アルキレン基の水素原子の一部または全
部がハロゲン原子で置換されていてもよい
R2:炭素数1〜31のアルキル基であり、アルキル基の水素原子の一部または全部
がハロゲン原子で置換されていてもよい
R:RfO[CF(CF3)CF2O]aCF(CF3)-、RfO(CF2CF2CF2O)aCF2CF2-、RfO[(CF2CF2O)a
(CF2O)b]CF2-またはRfO[(CF2CF2O)a(CF2O)b]CF(CF3)-であり、Rfは炭素数1〜5
、好ましくは1〜3のパーフルオロ低級アルキル基であり、a、bは1〜30の整数
である
R′:-[CF(CF3)CF2O]aCF(CF3)-、-(CF2CF2CF2O)aCF2CF2-、-[(CF2CF2O)a
(CF2O)b]CF2-または-[(CF2CF2O)a(CF2O)b]CF(CF3)-であり、a、bは1〜30の整
数である
[基油]
[添加剤]
B-1:RfO[CF(CF3)CF2O]nCF(CF3)-CONH-CH2CH3
B-2:RfO[CF(CF3)CF2O]nCF(CF3)-CONH-C4H8-NHCO-CF(CF3)[OCF2CF(CF3)]nORf
B-3:CH3CH2-NHCO-[(CF2CF2O)m(CF2O)n]CF2-CONH-CH2CH3
[増稠剤]
C-1:乳化重合法ポリテトラフルオロエチレン(数平均分子量Mn約10〜20万、平均
一次粒径0.2μm)
C-2:けん濁重合法ポリテトラフルオロエチレン(数平均分子量Mn約1〜10万、平均
一次粒径5μm)
C-3:溶液重合法テトラフルオロエチレン-ヘキサフルオロプロペン共重合体(数平
均分子量Mn約5〜15万、平均一次粒径0.2μm)
C-4:アゼライン酸リチウム
C-5:ヘキサメチレンジイソシアネートとオクチルアミンとの反応物
[硫化ガス試験]
40×40×5mmの銅板または銀板を試験片として、定流量フロー型ガス腐食試験装置を用い、H2S濃度:3%、温度:40℃、湿度:90%、時間:96時間の条件下における腐食試験後、グリースを拭き取った表面のEDS(エネルギー分散型X線分光)分析を行い、イオウが検出された場合を「あり」、検出されなかった場合を「なし」として評価
[相手材に対する耐摩耗性評価試験]
SUJ2(1/2インチ)、20等級を試験片として、シェル四球試験機を用い、回転数:20回/秒、荷重:392.3N(40Kgf)、温度:室温、時間:60分間の条件下で摩耗試験を行ない、試験後の摩耗痕径を測定
Claims (8)
- (CF 2 O) n 基を有するパーフルオロポリエーテル基油にパーフルオロポリエーテル基を有するジ-またはモノ-脂肪族アミド系化合物を、これら各成分の合計量中0.01〜50重量%の割合で添加してなり、グラファイトまたは二硫化モリブデンを焼結成分とする焼結含油軸受に含浸して使用され、あるいはグラファイトまたは二硫化モリブデンを含有する金属部品と接触して使用されるパーフルオロポリエーテル油組成物。
- 2〜2000mm2/秒の粘度(40℃)を有するパーフルオロポリエーテル基油が用いられた請求項1記載のパーフルオロポリエーテル油組成物。
- パーフルオロポリエーテル基を有するアミド系化合物が、一般式
RCONHR 1 NHCOR [I]
ここで、R:RfO[CF(CF 3 )CF 2 O] a CF(CF 3 )-、RfO(CF 2 CF 2 CF 2 O) a CF 2 CF 2 -、RfO[(CF 2
CF 2 O) a (CF 2 O) b ]CF 2 -またはRfO[(CF 2 CF 2 O) a (CF 2 O) b ]CF(CF 3 )-であり、Rfは
炭素数1〜5のパーフルオロ低級アルキル基であり、a、bは1〜30の整数で
ある
R 1 :炭素数1〜30のアルキレン基であり、該アルキレン基の水素原子の一部ま
たは全部がハロゲン原子で置換されていてもよい
で表わされる化合物である請求項1記載のパーフルオロポリエーテル油組成物。 - パーフルオロポリエーテル基を有するアミド系化合物が、一般式
R 2 NHCOR [II]
ここで、R:RfO[CF(CF 3 )CF 2 O] a CF(CF 3 )-、RfO(CF 2 CF 2 CF 2 O) a CF 2 CF 2 -、RfO[(CF 2
CF 2 O) a (CF 2 O) b ]CF 2 -またはRfO[(CF 2 CF 2 O) a (CF 2 O) b ]CF(CF 3 )-であり、Rfは
炭素数1〜5のパーフルオロ低級アルキル基であり、a、bは1〜30の整数で
ある
R 2 :炭素数1〜31のアルキル基であり、該アルキル基の水素原子の一部または
全部がハロゲン原子で置換されていてもよい
で表わされる化合物である請求項1記載のパーフルオロポリエーテル油組成物。 - パーフルオロポリエーテル基を有するアミド系化合物が、一般式
R 2 NHCOR′CONHR 2 [III]
ここで、R′:-[CF(CF 3 )CF 2 O] a CF(CF 3 )-、-(CF 2 CF 2 CF 2 O) a CF 2 CF 2 -、-[(CF 2 CF 2 O) a
(CF 2 O) b ]CF 2 -または-[(CF 2 CF 2 O) a (CF 2 O) b ]CF(CF 3 )-であり、a、bは1〜30
の整数である
R 2 :炭素数1〜31のアルキル基であり、該アルキル基の水素原子の一部または
全部がハロゲン原子で置換されていてもよい
で表わされる化合物である請求項1記載のパーフルオロポリエーテル油組成物。 - 潤滑剤組成物として用いられる請求項1記載のパーフルオロポリエーテル油組成物。
- 基油およびパーフルオロポリエーテル基含有脂肪族アミド系化合物添加剤との合計量中50重量%以下の割合で、増稠剤がさらに添加された請求項1記載のパーフルオロポリエーテル油組成物。
- さらに酸化防止剤、防錆剤、腐食防止剤、極圧剤、油性剤およびフッ素樹脂以外の固体潤滑剤の少なくとも一種が添加された請求項1または7記載のパーフルオロポリエーテル油組成物。
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US20100240557A1 (en) | 2010-09-23 |
WO2006030632A1 (ja) | 2006-03-23 |
JPWO2006030632A1 (ja) | 2008-05-15 |
DE112005002210B4 (de) | 2013-06-20 |
JP5035315B2 (ja) | 2012-09-26 |
DE112005003849A5 (de) | 2012-06-21 |
JP4548420B2 (ja) | 2010-09-22 |
US20080032904A1 (en) | 2008-02-07 |
DE112005003849B4 (de) | 2013-06-20 |
DE112005002210T5 (de) | 2007-08-16 |
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