JP2014125492A - Lubricant composition - Google Patents
Lubricant composition Download PDFInfo
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- JP2014125492A JP2014125492A JP2012280835A JP2012280835A JP2014125492A JP 2014125492 A JP2014125492 A JP 2014125492A JP 2012280835 A JP2012280835 A JP 2012280835A JP 2012280835 A JP2012280835 A JP 2012280835A JP 2014125492 A JP2014125492 A JP 2014125492A
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- lubricant composition
- sealing member
- composition according
- polymer thickener
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- 239000000314 lubricant Substances 0.000 title claims abstract description 69
- 239000000203 mixture Substances 0.000 title claims abstract description 65
- 229920000642 polymer Polymers 0.000 claims abstract description 36
- 239000002562 thickening agent Substances 0.000 claims abstract description 30
- 239000012736 aqueous medium Substances 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 32
- 229920002125 Sokalan® Polymers 0.000 claims description 23
- 150000001875 compounds Chemical class 0.000 claims description 16
- 239000004584 polyacrylic acid Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 11
- 150000004676 glycans Chemical class 0.000 claims description 11
- 229920001282 polysaccharide Polymers 0.000 claims description 11
- 239000005017 polysaccharide Substances 0.000 claims description 11
- 239000005060 rubber Substances 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 10
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 6
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 5
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 13
- 238000003780 insertion Methods 0.000 abstract description 11
- 230000037431 insertion Effects 0.000 abstract description 11
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000004381 surface treatment Methods 0.000 abstract description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008719 thickening Effects 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical class OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 3
- BUZRAOJSFRKWPD-UHFFFAOYSA-N isocyanatosilane Chemical group [SiH3]N=C=O BUZRAOJSFRKWPD-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003472 neutralizing effect Effects 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000012756 surface treatment agent Substances 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- KODLUXHSIZOKTG-UHFFFAOYSA-N 1-aminobutan-2-ol Chemical class CCC(O)CN KODLUXHSIZOKTG-UHFFFAOYSA-N 0.000 description 1
- JMFLYAQVWMIMKC-UHFFFAOYSA-N 3-(2-aminoethylamino)propane-1,1,1,3-tetrol Chemical class NCCNC(O)CC(O)(O)O JMFLYAQVWMIMKC-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- SAIKULLUBZKPDA-UHFFFAOYSA-N Bis(2-ethylhexyl) amine Chemical class CCCCC(CC)CNCC(CC)CCCC SAIKULLUBZKPDA-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical class CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 229920003064 carboxyethyl cellulose Polymers 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical class OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- LVTYICIALWPMFW-UHFFFAOYSA-N diisopropanolamine Chemical class CC(O)CNCC(C)O LVTYICIALWPMFW-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 150000002169 ethanolamines Chemical class 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polysiloxane Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Abstract
Description
本発明は、潤滑剤組成物に関する。さらに詳しくは、例えば、ゴム製部品の組み付けに使用される潤滑剤組成物に関する。 The present invention relates to a lubricant composition. More specifically, for example, the present invention relates to a lubricant composition used for assembling rubber parts.
一般に、オイルシール、Ｏリング、パッキン等のシール用部材をシャフト等に組み付ける際には、挿入時のカジリや傷付きによるシール性悪化防止のため、オイル、グリース、ワックス等の潤滑剤が塗布されている。しかし、このような潤滑剤を用いた場合、塗布作業の際に周辺に飛散してしまい現場環境が悪化するといった問題がある。このような背景から、近年では作業環境のクリーン化を目的としてオイル・グリースレス化のニーズが高まりつつある。また、潤滑剤を用いた場合、組み付け時の挿入抵抗を低減させるだけでなく、組み付け後のシール性を確保するべくシール用部材が滑らないようにすることが要求されている。 In general, when assembling sealing members such as oil seals, O-rings, and packings on shafts, lubricants such as oil, grease, and wax are applied to prevent deterioration of sealing performance due to galling or scratching during insertion. ing. However, when such a lubricant is used, there is a problem that the site environment is deteriorated due to scattering to the periphery during the application work. Against this background, in recent years, there has been a growing need for an oil / grease-free system for the purpose of cleaning the work environment. In addition, when a lubricant is used, it is required not only to reduce the insertion resistance at the time of assembly, but also to prevent the sealing member from slipping in order to ensure the sealing performance after assembly.
潤滑剤として、例えば、末端水酸基を含有するポリシロキサンとシリルイソシアネートとの反応生成物、イソシアネート基と反応性を有する官能基を含有するオリゴマーとシリルイソシアネートとの反応生成物、シリルイソシアネートオリゴマー、有機溶媒可溶性ゴムよりなる表面処理剤（特許文献１）、特定の非相溶性シリコーンオイルを配合したオイルブリード性シリコーンゴム（特許文献２，３，４）がある。 As a lubricant, for example, a reaction product of polysiloxane containing a terminal hydroxyl group and silyl isocyanate, a reaction product of an oligomer containing a functional group having reactivity with an isocyanate group and silyl isocyanate, a silyl isocyanate oligomer, an organic solvent There are surface treating agents made of soluble rubber (Patent Document 1) and oil-bleedable silicone rubbers (Patent Documents 2, 3, and 4) blended with specific incompatible silicone oils.
特許文献１では、表面処理剤を用いることにより、作業環境の改善やシール用部材の組み付け性を向上させているが、表面処理剤の主成分がトルエン、酢酸エチル、メチルエチルケトン等の有機溶剤であり、環境負荷が大きいため取り扱いが容易でない。また、表面処理被膜を形成させるために熱処理が必要となり、設備投資やランニングコストがかかる点で、経済性に劣る。 In Patent Document 1, the surface treatment agent is used to improve the work environment and improve the assembly of the sealing member. However, the main component of the surface treatment agent is an organic solvent such as toluene, ethyl acetate, methyl ethyl ketone, or the like. It is not easy to handle due to the large environmental load. In addition, heat treatment is required to form the surface treatment film, which is inferior in economic efficiency in terms of equipment investment and running cost.
また、特許文献２、３、４では、ゴム表層にオイル成分をブリードさせて、組み付けの際の挿入抵抗を低減させているが、短時間で十分なブリードオイルをゴム表層にブリードさせるためには、ブリードオイルの配合量をある程度多くしなければならない。結果として、ゴム自体の機械的強度が低下してしまう。 Further, in Patent Documents 2, 3, and 4, the oil component is bleed on the rubber surface layer to reduce the insertion resistance during assembly, but in order to bleed sufficient bleed oil on the rubber surface layer in a short time, The amount of bleed oil must be increased to some extent. As a result, the mechanical strength of the rubber itself is reduced.
したがって、本発明は、表面処理を必要とせず、簡単に塗布することができ、従来使用されていた組み付け用オイル・グリースと同程度の挿入抵抗低減を実現しつつ、組み付け後のシール性を確保し得る、環境負荷の少ない水系の潤滑剤組成物を提供することを目的とする。 Therefore, the present invention does not require surface treatment, can be applied easily, and achieves the same level of insertion resistance reduction as that of conventional oil and grease for assembly, while ensuring the sealing performance after assembly. An object of the present invention is to provide a water-based lubricant composition having a low environmental load.
上記課題を解決するために、本発明者らは、以下の潤滑剤組成物を提供する。 In order to solve the above problems, the present inventors provide the following lubricant composition.
（１）水性媒体と高分子増粘剤を含む潤滑剤組成物であって、温度２５℃、シェアレート１ｓ−１における見掛け粘度が８００〜８０００ｍＰａ・ｓであることを特徴とする潤滑剤組成物。
（２）前記高分子増粘剤は、ポリアクリル酸系化合物であることを特徴とする、（１）に記載の潤滑剤組成物。
（３）前記ポリアクリル酸系化合物は、カルボキシビニルポリマーの塩であることを特徴とする、（２）に記載の潤滑剤組成物。
（４）前記ポリアクリル酸系化合物の含有量は、前記水性媒体１００重量部に対して０．０２〜０．３重量部であることを特徴とする、（２）又は（３）に記載の潤滑剤組成物。
（５）前記高分子増粘剤は、多糖類誘導体であることを特徴とする、（１）に記載の潤滑剤組成物。
（６）前記多糖類誘導体は、ヒドロキシエチルセルロースであることを特徴とする、（５）に記載の潤滑剤組成物。
（７）前記多糖類誘導体の含有量は、前記水性媒体１００重量部に対して０．１〜１．５重量部であることを特徴とする、（５）又は（６）に記載の潤滑剤組成物。
（８）シール用部材の組み付けに使用されることを特徴とする、（１）〜（７）のいずれかに記載の潤滑剤組成物。
（９）前記シール用部材が、ゴム製であることを特徴とする、（８）に記載の潤滑剤組成物。
（１０）シール用部材と被組付部材との接触面に、水性媒体と高分子増粘剤を含み、かつ、温度２５℃、シェアレート１ｓ−１における見掛け粘度が８００〜８０００ｍＰａ・ｓである潤滑剤組成物を塗布し、前記シール用部材を被組付部材に組み付けることを特徴とする組み付け方法。
（１１）前記潤滑剤組成物をシール用部材に塗布した後、前記潤滑剤組成物が乾燥する前に、前記シール用部材を被組付部材に組み付けることを特徴とする、（１０）に記載の組み付け方法。
(1) A lubricant composition comprising an aqueous medium and a polymer thickener, wherein the apparent viscosity at a temperature of 25 ° C. and a shear rate of 1 s −1 is 800 to 8000 mPa · s. .
(2) The lubricant composition according to (1), wherein the polymer thickener is a polyacrylic acid compound.
(3) The lubricant composition according to (2), wherein the polyacrylic acid compound is a salt of a carboxyvinyl polymer.
(4) The content of the polyacrylic acid compound is 0.02 to 0.3 parts by weight with respect to 100 parts by weight of the aqueous medium, according to (2) or (3) Lubricant composition.
(5) The lubricant composition according to (1), wherein the polymer thickener is a polysaccharide derivative.
(6) The lubricant composition according to (5), wherein the polysaccharide derivative is hydroxyethyl cellulose.
(7) The lubricant according to (5) or (6), wherein the content of the polysaccharide derivative is 0.1 to 1.5 parts by weight with respect to 100 parts by weight of the aqueous medium. Composition.
(8) The lubricant composition according to any one of (1) to (7), which is used for assembling a seal member.
(9) The lubricant composition according to (8), wherein the sealing member is made of rubber.
(10) The contact surface between the sealing member and the member to be assembled contains an aqueous medium and a polymer thickener, and the apparent viscosity at a temperature of 25 ° C. and a shear rate of 1 s −1 is 800 to 8000 mPa · s. An assembly method, wherein a lubricant composition is applied, and the sealing member is assembled to a member to be assembled.
(11) The method according to (10), wherein the sealing member is assembled to a member to be assembled after the lubricant composition is applied to the sealing member and before the lubricant composition is dried. Assembly method.
本発明の潤滑剤組成物は、表面処理を必要とせず、簡単に塗布することができる。また、本発明の潤滑剤組成物は、シール用部材を組み付ける際の挿入抵抗を低下させ、さらに、組み付け後のシール性を維持することができる。また、本発明の潤滑剤組成物は、環境負荷が少ない。 The lubricant composition of the present invention does not require surface treatment and can be easily applied. In addition, the lubricant composition of the present invention can reduce the insertion resistance when assembling the sealing member, and can maintain the sealing performance after assembling. Further, the lubricant composition of the present invention has a low environmental load.
以下、本発明を実施形態に即して詳細に説明する。 Hereinafter, the present invention will be described in detail according to embodiments.
（潤滑剤組成物）
本発明の潤滑剤組成物は、水性媒体と高分子増粘剤とを含む。
(Lubricant composition)
The lubricant composition of the present invention includes an aqueous medium and a polymer thickener.
本発明で使用される高分子増粘剤は、水と混合することにより増粘性を発揮する高分子化合物であれば特に限定されないが、ポリアクリル酸系化合物、多糖類誘導体等が好ましい。これらの高分子増粘剤は、単独で用いてもよく、複数を組み合わせて用いてもよい。高分子増粘剤の重量平均分子量は、５０万〜２００万であるのが好ましい。重量平均分子量が５０万未満の場合には、増粘効果が得られにくい。また、重量平均分子量が２００万を超えると、溶解性が低下してしまう。 The polymer thickener used in the present invention is not particularly limited as long as it is a polymer compound that exhibits thickening by mixing with water, but polyacrylic acid compounds, polysaccharide derivatives and the like are preferable. These polymer thickeners may be used alone or in combination. The weight average molecular weight of the polymer thickener is preferably 500,000 to 2,000,000. When the weight average molecular weight is less than 500,000, it is difficult to obtain a thickening effect. Moreover, when a weight average molecular weight exceeds 2 million, solubility will fall.
ポリアクリル酸系化合物とは、主として含まれているモノマー構成単位がアクリル酸であるポリマーであって、その塩も含まれる。すなわち、ポリアクリル酸系化合物は、アクリル酸のみを重合したホモポリマーでもよく、アクリル酸と他のモノマーとを重合したコポリマーでもよい。他のモノマーとしては、例えば、アクリル酸エステル、メタクリル酸、メタクリル酸エステルやマレイン酸等が挙げられる。 The polyacrylic acid-based compound is a polymer in which the monomer constituent unit mainly contained is acrylic acid, and a salt thereof is also included. That is, the polyacrylic acid compound may be a homopolymer obtained by polymerizing only acrylic acid or a copolymer obtained by polymerizing acrylic acid and another monomer. Examples of other monomers include acrylic acid ester, methacrylic acid, methacrylic acid ester and maleic acid.
また、ポリアクリル酸系化合物は、一部が架橋した構造を有していてもよい。架橋剤、例えば、少なくとも２つのエチレン性不飽和基を有するモノマー、又はエポキシ基とエチレン性不飽和基を少なくとも１つずつ有するモノマーを、アクリル酸等のモノマーと重合することにより架橋した構造のポリマーを得ることができる。架橋型ポリアクリル酸系化合物は、三次元網目構造を形成することで、水を取り込んだ際の増粘効果が高い。 The polyacrylic acid compound may have a partially crosslinked structure. A polymer having a structure in which a crosslinking agent, for example, a monomer having at least two ethylenically unsaturated groups or a monomer having at least one epoxy group and one ethylenically unsaturated group is crosslinked with a monomer such as acrylic acid. Can be obtained. The cross-linked polyacrylic acid-based compound has a high thickening effect when water is taken in by forming a three-dimensional network structure.
また、ポリアクリル酸系化合物が塩である場合、ポリマーに含まれるカルボキシル基の一部のみが中和したものでも、全部が中和したものでもよい。塩の種類は特に限定されないが、例えば、ナトリウム塩、カリウム塩、アンモニウム塩、モノエタノールアミン塩、ジエタノールアミン塩、トリエタノールアミン塩、ジイソプロパノールアミン塩、ジ（２−エチルヘキシル）アミン塩、アミノメチルプロパノール塩、トリエチルアミン塩、テトラヒドロキシプロピルエチレンジアミン塩等が挙げられる。市場入手性、及び水性媒体中での溶解安定性の点で、トリエタノールアミン塩がより好ましい。これらの塩は、ポリマーに中和剤を作用させることにより形成できる。中和剤の添加量は、潤滑剤組成物のｐＨが４〜１１になるように調整するのが好ましい。 When the polyacrylic acid compound is a salt, only a part of the carboxyl groups contained in the polymer may be neutralized or all may be neutralized. The type of the salt is not particularly limited. For example, sodium salt, potassium salt, ammonium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, diisopropanolamine salt, di (2-ethylhexyl) amine salt, aminomethylpropanol Salt, triethylamine salt, tetrahydroxypropylethylenediamine salt and the like. A triethanolamine salt is more preferable in terms of market availability and dissolution stability in an aqueous medium. These salts can be formed by allowing a neutralizing agent to act on the polymer. The addition amount of the neutralizing agent is preferably adjusted so that the pH of the lubricant composition is 4-11.
ポリアクリル酸系化合物としては、より具体的に、アクリル酸コポリマー又はその塩、カルボキシビニルポリマー又はその塩、アルキル変性カルボキシビニルポリマー又はその塩が挙げられる。低濃度で優れた増粘効果を示す点で、カルボキシビニルポリマーの塩がより好ましい。 More specifically, examples of the polyacrylic acid-based compound include an acrylic acid copolymer or a salt thereof, a carboxyvinyl polymer or a salt thereof, and an alkyl-modified carboxyvinyl polymer or a salt thereof. A carboxyvinyl polymer salt is more preferable in that it exhibits an excellent thickening effect at a low concentration.
多糖類誘導体とは、多糖類のヒドロキシ基の一部又は全てに置換基を導入したものである。多糖類誘導体としては、例えば、セルロース誘導体、グアーガム誘導体、スターチ誘導体が挙げられるが、特にセルロース誘導体が好ましい。また、セルロース誘導体としては、例えば、メチルセルロース、エチルセルロース、ヒドロキシエチルセルロース、ヒドロキシプロピルセルロース、ヒドロキシエチルメチルセルロース、ヒドロキシプロピルメチルセルロース、カルボキシメチルセルロース、カルボキシエチルセルロースが挙げられる。その中でも、水に溶解しやすく、均一な水性溶液を迅速に得やすい点で、ヒドロキシエチルセルロースがより好ましい。なお、ヒドロキシセルロースは、公知の方法で製造することができるが、例えば、セルロースを塩基で処理した後に酸化エチレンと反応させて製造することができる。 The polysaccharide derivative is a derivative in which a substituent is introduced into part or all of the hydroxy group of the polysaccharide. Examples of polysaccharide derivatives include cellulose derivatives, guar gum derivatives, and starch derivatives, and cellulose derivatives are particularly preferable. Examples of the cellulose derivative include methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose, and carboxyethyl cellulose. Among them, hydroxyethyl cellulose is more preferable because it is easily dissolved in water and a uniform aqueous solution can be easily obtained. In addition, although hydroxycellulose can be manufactured by a well-known method, for example, after processing cellulose with a base, it can be made to react with ethylene oxide.
本発明の潤滑剤組成物における高分子増粘剤の含有量は、特に限定されないが、高分子増粘剤がポリアクリル酸系化合物であるときは、水性媒体１００重量部に対して０．０２〜０．３重量部であるのが好ましい。また、高分子増粘剤が多糖類誘導体であるときは、水性媒体１００重量部に対して０．１〜１．５重量部であるのが好ましい。高分子増粘剤の含有量は、潤滑剤組成物の見掛け粘度（２５℃、シェアレート１ｓ−１）が８００〜８０００Ｐａ・ｓになるように適宜調整される。潤滑剤組成物の見掛け粘度（２５℃、シェアレート１ｓ−１）は、より好ましくは、１５００〜６５００Ｐａ・ｓである。見掛け粘度が８００〜８０００Ｐａ・ｓであると、組み付けの際に挿入部に水又は溶剤膜が形成され、挿入抵抗を低減させることができる。さらに、塗布作業性も良好となる。一方、見掛け粘度が８００Ｐａ・ｓより低いと、組み付けの際に摩擦抵抗が大きくなってしまい、シール用部材のカジリや傷付きが発生してしまう。また、見掛け粘度が８０００Ｐａ・ｓより高いと、塗布作業性に悪影響を及ぼし、かつ、組み付け後に高分子増粘剤が異物として残り、シール用部材のシール機能を低下させてしまう。 The content of the polymer thickener in the lubricant composition of the present invention is not particularly limited, but when the polymer thickener is a polyacrylic acid compound, it is 0.02 with respect to 100 parts by weight of the aqueous medium. It is preferable that it is -0.3 weight part. When the polymer thickener is a polysaccharide derivative, it is preferably 0.1 to 1.5 parts by weight with respect to 100 parts by weight of the aqueous medium. The content of the polymer thickener is appropriately adjusted so that the apparent viscosity (25 ° C., shear rate 1 s −1 ) of the lubricant composition is 800 to 8000 Pa · s. The apparent viscosity (25 ° C., shear rate 1 s −1 ) of the lubricant composition is more preferably 1500 to 6500 Pa · s. When the apparent viscosity is 800 to 8000 Pa · s, a water or solvent film is formed at the insertion portion during assembly, and insertion resistance can be reduced. Furthermore, the coating workability is also improved. On the other hand, if the apparent viscosity is lower than 800 Pa · s, the frictional resistance becomes large at the time of assembly, and the seal member is galling or scratched. On the other hand, when the apparent viscosity is higher than 8000 Pa · s, the coating workability is adversely affected, and the polymer thickener remains as a foreign substance after assembly, and the sealing function of the sealing member is deteriorated.
本発明で使用される水性媒体は、水を必須成分として含有していればよく、他の有機溶剤を含有していてもよい。水性媒体は、好ましくは、水、又は、水とアルコール系溶剤の混合溶媒である。特に、高分子増粘剤としてポリアクリル酸系化合物を用いる場合には、組み付け後の乾燥性の向上を目的として揮発性の高いアルコール系溶剤を含有させるのがよい。揮発性の高いアルコール系溶剤としては、メタノール、エタノール、イソプロピルアルコールが挙げられる。さらに、環境や人体への影響を考慮すると、イソプロピルアルコールが好ましい。有機溶剤の含有量は、組み付け後の乾燥効果に影響を与えない範囲で適宜調整することができる。これらの有機溶媒は、単独で用いてもよいし、２種類以上を組み合わせて用いてもよい。 The aqueous medium used by this invention should just contain water as an essential component, and may contain the other organic solvent. The aqueous medium is preferably water or a mixed solvent of water and an alcohol solvent. In particular, when a polyacrylic acid compound is used as the polymer thickener, it is preferable to contain a highly volatile alcohol solvent for the purpose of improving the drying property after assembly. Examples of the highly volatile alcohol solvent include methanol, ethanol, and isopropyl alcohol. Furthermore, isopropyl alcohol is preferable in consideration of the influence on the environment and the human body. The content of the organic solvent can be appropriately adjusted within a range that does not affect the drying effect after assembly. These organic solvents may be used alone or in combination of two or more.
本発明の潤滑剤組成物は、シール用部材に塗布されることにより、シール用部材を組み付ける際の挿入抵抗が低減する。さらに、挿入後に、滑剤組成物に含まれる水性媒体が揮発してシール用部材の摩擦係数が高くなるため、組み付け後のシール性を維持することができる。 When the lubricant composition of the present invention is applied to a sealing member, insertion resistance when the sealing member is assembled is reduced. Furthermore, since the aqueous medium contained in the lubricant composition is volatilized after insertion and the coefficient of friction of the sealing member is increased, the sealing performance after assembly can be maintained.
（潤滑剤組成物の製造方法）
本発明の潤滑剤組成物の製造方法は、特に限定されないが、水性媒体と高分子増粘剤とその他添加剤を所定量配合し、ディゾルバー等の攪拌機やボールミル、サンドミル、アジホモミキサー等を適宜組み合わせて混合分散させるのが好ましい。
(Method for producing lubricant composition)
The method for producing the lubricant composition of the present invention is not particularly limited, but a predetermined amount of an aqueous medium, a polymer thickener, and other additives are blended, and a stirrer such as a dissolver, a ball mill, a sand mill, an azimo homomixer, etc. are appropriately used. It is preferable to mix and disperse in combination.
（組み付け方法）
本発明におけるシール部材の組み付け方法では、シール用部材と被組付部材との接触面に潤滑剤組成物が塗布される。具体的には、潤滑剤組成物をシール用部材又は被組付部材に塗布した後、潤滑剤組成物が乾燥する前に、シール用部材を被組付部材に組み付ける。シール用部材とは、例えば、オイルシール、Ｏリング、パッキン等のゴム製、プラスチック製部材である。また、本発明の潤滑剤組成物は、軸受、プッシュ、メカニカルシール等の金属製部材にも適用される。本発明の潤滑剤組成物を塗布すると、シール用部材の被組付部材への組み付けが容易となる。すなわち、本発明の潤滑剤組成物は、組み付け用潤滑剤組成物である。塗布方法は、特に限定されないが、例えばスプレー法、ディッピング法、フローコート法、ディスペンザー法、スピンコート法が挙げられる。それぞれの塗布方法に応じて、潤滑剤組成物の製造時又は塗布前に、溶剤により粘度の調整をすることができる。
(Assembly method)
In the method for assembling the seal member in the present invention, the lubricant composition is applied to the contact surface between the seal member and the member to be assembled. Specifically, after the lubricant composition is applied to the sealing member or the member to be assembled, the sealing member is assembled to the member to be assembled before the lubricant composition is dried. The sealing member is, for example, a rubber or plastic member such as an oil seal, an O-ring, or packing. The lubricant composition of the present invention is also applied to metal members such as bearings, pushes, and mechanical seals. When the lubricant composition of the present invention is applied, the sealing member can be easily assembled to the member to be assembled. That is, the lubricant composition of the present invention is an assembly lubricant composition. The application method is not particularly limited, and examples thereof include a spray method, a dipping method, a flow coat method, a dispenser method, and a spin coat method. Depending on each application method, the viscosity can be adjusted with a solvent during the production of the lubricant composition or before application.
［潤滑剤組成物の調製］
表１における高分子増粘剤（Ａ）、高分子増粘剤（Ｂ）、中和剤の詳細を下記に示す。
高分子増粘剤（Ａ）：カルボキシビニルポリマー（Ａｑｕｐｅｃ ＨＶ−５０１、住友精化（株）製）
高分子増粘剤（Ｂ）：ヒドロキシエチルセルロース（ＨＥＣ ＡＸ−１５、住友精化（株）製）
中和剤：トリエタノールアミン（和光純薬工業（株）製）
[Preparation of Lubricant Composition]
Details of the polymer thickener (A), polymer thickener (B), and neutralizer in Table 1 are shown below.
Polymer thickener (A): carboxyvinyl polymer (Aquecc HV-501, manufactured by Sumitomo Seika Co., Ltd.)
Polymer thickener (B): hydroxyethyl cellulose (HEC AX-15, manufactured by Sumitomo Seika Co., Ltd.)
Neutralizer: Triethanolamine (manufactured by Wako Pure Chemical Industries, Ltd.)
（実施例１〜３）
水：イソプロピルアルコール（ＩＰＡ）＝１：１の混合溶剤を攪拌しながら、表１の配合率になるように高分子増粘剤（Ａ）を加え、さらに均一な粘度になるまで攪拌した。攪拌を続けた状態で、高分子増粘剤（Ａ）に対して１．５倍量の中和剤を加えて、均一な分散液を得た。得られた分散液の評価結果を表１に示す。なお、表１における配合率の単位は、重量部であり、水性媒体（水とＩＰＡとの合計量）１００重量部を基準として表記したものである。
(Examples 1-3)
While stirring a mixed solvent of water: isopropyl alcohol (IPA) = 1: 1, the polymer thickener (A) was added so as to achieve the blending ratio shown in Table 1, and further stirred until a uniform viscosity was obtained. With the stirring continued, 1.5 times the amount of neutralizing agent was added to the polymer thickener (A) to obtain a uniform dispersion. Table 1 shows the evaluation results of the obtained dispersion. In addition, the unit of the compounding rate in Table 1 is a part by weight, and is described based on 100 parts by weight of an aqueous medium (total amount of water and IPA).
（実施例４〜６）
水を攪拌しながら、表１の配合率になるように高分子増粘剤（Ｂ）を加え、さらに均一な粘度になるまで攪拌して、均一な分散液を得た。得られた分散液の評価結果を表１に示す。
(Examples 4 to 6)
While stirring water, the polymer thickener (B) was added so as to achieve the blending ratio shown in Table 1, and further stirred until a uniform viscosity was obtained, thereby obtaining a uniform dispersion. Table 1 shows the evaluation results of the obtained dispersion.
（比較例１）
潤滑剤組成物を塗布しない場合の評価結果を表１に示す。
(Comparative Example 1)
Table 1 shows the evaluation results when the lubricant composition is not applied.
（比較例２）
高分子増粘剤を配合せず、水：ＩＰＡ＝１：１の混合液のみを用いた場合の評価結果を表１に示す。
(Comparative Example 2)
Table 1 shows the evaluation results when no polymer thickener is blended and only a mixed solution of water: IPA = 1: 1 is used.
（比較例３、４）
実施例１〜３と同様の方法で、表１の配合率になるように高分子増粘剤（Ａ）を加え、均一な分散液を得た。得られた分散液の評価結果を表１に示す。
(Comparative Examples 3 and 4)
In the same manner as in Examples 1 to 3, the polymer thickener (A) was added so as to achieve the blending ratio shown in Table 1, and a uniform dispersion was obtained. Table 1 shows the evaluation results of the obtained dispersion.
（比較例５）
汎用組み付け用オイルとして、シリコーンオイルを用いた場合の評価結果を表１に示す。
(Comparative Example 5)
Table 1 shows the evaluation results when silicone oil is used as the general-purpose assembly oil.
［潤滑剤組成物の試験方法］
（１）粘度測定
見掛け粘度は、Ａｎｔｏｎ Ｐａａｒ社製レオメータＭＣＲ３０１を用いて測定した。温度２５℃の条件下、せん断速度を０．００１〜４７０ｓ−１で加速させていき、シェアレートが１ｓ−１のときのせん断粘度を見掛け粘度とした。
（２）摩擦係数の測定
荷重：２００ｇ、
速度：５０ｍｍ／ｍｉｎ、
摺動距離：５０ｍｍ、
圧子：φ１０ｍｍＳＵＳ球、
相手材：潤滑剤組成物を０．５ｍｌ塗布したゴム材（ＦＫＭ）
新東科学社製ＨＥＩＤＯＮ表面性試験機を使用し、上記条件下で往復動を行い、往路側の動摩擦係数を測定し、５回の平均値を算出した。なお、動摩擦係数は、塗布直後と、６０℃で３時間静置させて水及びＩＰＡを揮発させた後（乾燥後）との２パターンを測定した。
（３）塗布作業性
潤滑剤組成物をゴム材（ＦＫＭ）に３，４滴滴下し、薄く塗り広げた際のレベリング性を目視で判断した。
[Test method for lubricant composition]
(1) Viscosity measurement Apparent viscosity was measured using a rheometer MCR301 manufactured by Anton Paar. Under the condition of a temperature of 25 ° C., the shear rate was accelerated from 0.001 to 470 s −1 , and the shear viscosity when the shear rate was 1 s −1 was regarded as the apparent viscosity.
(2) Friction coefficient measurement load: 200 g
Speed: 50 mm / min,
Sliding distance: 50mm,
Indenter: φ10 mm SUS ball,
Counterpart material: Rubber material (FKM) coated with 0.5 ml of lubricant composition
Using a HEIDON surface property tester manufactured by Shinto Kagaku Co., Ltd., reciprocating motion was performed under the above conditions, the dynamic friction coefficient on the forward path side was measured, and the average value of 5 times was calculated. In addition, the dynamic friction coefficient measured two patterns immediately after application | coating and after leaving still at 60 degreeC for 3 hours, and volatilizing water and IPA (after drying).
(3) Coating workability Three or four drops of the lubricant composition was dropped on a rubber material (FKM), and the leveling property when thinly spread was visually judged.
［潤滑剤組成物の評価結果］
実施例１〜６のとおり、潤滑剤組成物の見掛け粘度が８００〜８０００ｍＰａ・ｓである場合には、塗布直後の摩擦係数が低く、乾燥後の摩擦係数が高い値を示し、塗布作業性も良好であった。一方、潤滑剤組成物を塗布していない比較例１では、塗布直後の摩擦係数が１．５と非常に高い値を示した。また、高分子増粘剤を含有していない比較例２では、塗布作業性は良好であるが、見掛け粘度が低いため十分な溶剤膜を形成することができなかった。その結果、塗布直後の摩擦係数が高い値を示した。また、比較例３では、塗布作業性は良好であるが、カルボキシビニルポリマーの配合率が低いため十分な見掛け粘度が得られず、塗布直後の摩擦係数が高い値を示した。また、比較例４では、塗布直後の摩擦係数は低く良好であるが、カルボキシビニルポリマーの配合率が高いため塗布作業性が悪く、塗布後にポリマー成分が目視で判断できるほど析出してしまい、乾燥後の摩擦係数も低い値を示した。また、汎用組み付け用オイルを用いた比較例５では、塗布直後の摩擦係数は低く良好であるが、組み付け後もオイル成分が残った。また、乾燥後の摩擦係数も低いため、組み付けたシール用部材が組み付け位置から外れやすく、シール性等に悪影響を及ぼすことが懸念される。 As in Examples 1 to 6, when the apparent viscosity of the lubricant composition is 800 to 8000 mPa · s, the coefficient of friction immediately after application is low, the coefficient of friction after drying is high, and the workability of application is also high. It was good. On the other hand, in Comparative Example 1 in which the lubricant composition was not applied, the friction coefficient immediately after application was as high as 1.5. In Comparative Example 2 containing no polymer thickener, the coating workability was good, but a sufficient solvent film could not be formed due to the low apparent viscosity. As a result, the coefficient of friction immediately after application showed a high value. In Comparative Example 3, the coating workability was good, but a sufficient apparent viscosity was not obtained due to the low blending ratio of carboxyvinyl polymer, and the coefficient of friction immediately after coating showed a high value. In Comparative Example 4, the coefficient of friction immediately after coating is low and good, but the coating workability is poor due to the high blending ratio of the carboxyvinyl polymer, and the polymer component is precipitated after coating so that it can be judged visually, and is dried. The later coefficient of friction also showed a low value. In Comparative Example 5 using general-purpose assembly oil, the coefficient of friction immediately after application was low and good, but the oil component remained after assembly. In addition, since the coefficient of friction after drying is low, the assembled sealing member is likely to be detached from the assembly position, and there is a concern that the sealing performance and the like may be adversely affected.
以上のとおり、本発明の潤滑剤組成物は、良好な摩擦係数および塗布作業性を有している。このため、挿入抵抗の低減、及び組み付け後のシール性の確保を目的とした組み付け用潤滑剤組成物として有用である。 As described above, the lubricant composition of the present invention has a good friction coefficient and coating workability. For this reason, it is useful as a lubricant composition for assembly for the purpose of reducing insertion resistance and ensuring sealing performance after assembly.
本発明の潤滑剤組成物は、組み付け用途に使用できる。より具体的に、Ｏリング、オイルシール、ガスケット、パッキン等のゴム製又は樹脂製部材を、金属製の被組付部材に組み付ける際に使用できる。また、転がり軸受、すべり軸受、ブッシュ、メカニカルシール等の金属製部材を、金属製の被組付部材に組み付ける際に使用できる。 The lubricant composition of the present invention can be used for assembling applications. More specifically, it can be used when a rubber or resin member such as an O-ring, oil seal, gasket, or packing is assembled to a metal member to be assembled. Further, it can be used when a metal member such as a rolling bearing, a slide bearing, a bush, or a mechanical seal is assembled to a metal assembly member.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016180083A (en) * | 2015-03-25 | 2016-10-13 | 住鉱潤滑剤株式会社 | Aqueous lubricant composition |
| JP2018127428A (en) * | 2017-02-10 | 2018-08-16 | 中島化学産業株式会社 | Deodorant, functional lubricant |
| JP2020199279A (en) * | 2020-08-24 | 2020-12-17 | 中島化学産業株式会社 | Deodorant, and functional lubricant |
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| JPS5272063A (en) * | 1975-12-10 | 1977-06-16 | Yuken Kogyo Co Ltd | Lubricating composion for coupling |
| JPS63266332A (en) * | 1987-04-24 | 1988-11-02 | Kanpai:Kk | Aqueous solution for joining and testing joint of gas and waterworks conduit and method for joining and testing joint of gas conduit using said solution |
| JP2002275493A (en) * | 2001-01-09 | 2002-09-25 | Noritz Corp | Lubricating agent and clean water instrument |
| JP2004067813A (en) * | 2002-08-05 | 2004-03-04 | Konishi Co Ltd | Lubricant composition for rubber ring type joint |
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| JPS5272063A (en) * | 1975-12-10 | 1977-06-16 | Yuken Kogyo Co Ltd | Lubricating composion for coupling |
| JPS63266332A (en) * | 1987-04-24 | 1988-11-02 | Kanpai:Kk | Aqueous solution for joining and testing joint of gas and waterworks conduit and method for joining and testing joint of gas conduit using said solution |
| JP2002275493A (en) * | 2001-01-09 | 2002-09-25 | Noritz Corp | Lubricating agent and clean water instrument |
| JP2004067813A (en) * | 2002-08-05 | 2004-03-04 | Konishi Co Ltd | Lubricant composition for rubber ring type joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2016180083A (en) * | 2015-03-25 | 2016-10-13 | 住鉱潤滑剤株式会社 | Aqueous lubricant composition |
| JP2018127428A (en) * | 2017-02-10 | 2018-08-16 | 中島化学産業株式会社 | Deodorant, functional lubricant |
| JP2020199279A (en) * | 2020-08-24 | 2020-12-17 | 中島化学産業株式会社 | Deodorant, and functional lubricant |
| JP7038431B2 (en) | 2020-08-24 | 2022-03-18 | 中島化学産業株式会社 | Deodorant, functional lubricant |
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