KR20240025349A - Lubricating Grease Containing Solid Lubricant - Google Patents
Lubricating Grease Containing Solid Lubricant Download PDFInfo
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- KR20240025349A KR20240025349A KR1020220103458A KR20220103458A KR20240025349A KR 20240025349 A KR20240025349 A KR 20240025349A KR 1020220103458 A KR1020220103458 A KR 1020220103458A KR 20220103458 A KR20220103458 A KR 20220103458A KR 20240025349 A KR20240025349 A KR 20240025349A
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- solid lubricant
- lubricating grease
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- 239000000314 lubricant Substances 0.000 title claims abstract description 46
- 239000007787 solid Substances 0.000 title claims abstract description 42
- 239000004519 grease Substances 0.000 title claims abstract description 41
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 32
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000654 additive Substances 0.000 claims description 21
- 230000000996 additive effect Effects 0.000 claims description 14
- 239000002199 base oil Substances 0.000 claims description 9
- 239000002562 thickening agent Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 239000007866 anti-wear additive Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 description 10
- FSYKKLYZXJSNPZ-UHFFFAOYSA-N sarcosine Chemical compound C[NH2+]CC([O-])=O FSYKKLYZXJSNPZ-UHFFFAOYSA-N 0.000 description 8
- 239000002270 dispersing agent Substances 0.000 description 7
- 239000002480 mineral oil Substances 0.000 description 7
- 235000010446 mineral oil Nutrition 0.000 description 7
- 239000003963 antioxidant agent Substances 0.000 description 6
- 230000003078 antioxidant effect Effects 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 239000003112 inhibitor Substances 0.000 description 6
- 229920013639 polyalphaolefin Polymers 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- QAPVYZRWKDXNDK-UHFFFAOYSA-N P,P-Dioctyldiphenylamine Chemical group C1=CC(CCCCCCCC)=CC=C1NC1=CC=C(CCCCCCCC)C=C1 QAPVYZRWKDXNDK-UHFFFAOYSA-N 0.000 description 4
- 108010077895 Sarcosine Proteins 0.000 description 4
- 229940043230 sarcosine Drugs 0.000 description 4
- 150000003852 triazoles Chemical class 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000000344 soap Substances 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- ROGIWVXWXZRRMZ-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical group CC(=C)C=C.C=CC1=CC=CC=C1 ROGIWVXWXZRRMZ-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 2
- -1 polyol ester Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 description 1
- QYMFNZIUDRQRSA-UHFFFAOYSA-N dimethyl butanedioate;dimethyl hexanedioate;dimethyl pentanedioate Chemical compound COC(=O)CCC(=O)OC.COC(=O)CCCC(=O)OC.COC(=O)CCCCC(=O)OC QYMFNZIUDRQRSA-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229920006213 ethylene-alphaolefin copolymer Polymers 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 239000003879 lubricant additive Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/22—Compounds containing sulfur, selenium or tellurium
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/02—Carbon; Graphite
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
- C10M137/10—Thio derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/08—Solids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Lubricants (AREA)
Abstract
본 발명은 내산화성 및 내압성이 향상됨은 물론이고, 고온, 고압, 고부화 상태의 가혹한 조건에서도 윤활성을 유지할 수 있는 이황화텅스텐을 고체윤활제로서 함유한, 내마모성 및 극압성능이 향상된 윤활그리스이다.The present invention is a lubricating grease with improved wear resistance and extreme pressure performance that not only has improved oxidation resistance and pressure resistance, but also contains tungsten disulfide as a solid lubricant, which can maintain lubricity even under harsh conditions of high temperature, high pressure, and high enrichment.
Description
본 발명은 고체윤활제를 함유하는 윤활그리스에 관한 것이며 구체적으로는 내산화성 및 내압성이 향상됨은 물론이고, 고온, 고압, 고부화 상태의 가혹한 조건에서도 윤활성을 유지할 수 있는 이황화텅스텐을 고체윤활제로서 함유한, 내마모성 및 극압성능이 향상된 윤활그리스에 관한 것이다.The present invention relates to a lubricating grease containing a solid lubricant, and specifically, to a lubricating grease containing tungsten disulfide as a solid lubricant, which not only improves oxidation resistance and pressure resistance, but also maintains lubricity even under harsh conditions such as high temperature, high pressure, and high enrichment. , relates to lubricating grease with improved wear resistance and extreme pressure performance.
일반적으로 각종 접동부위 표면의 윤활성 및 내마모성을 증대시키기 위해 그리스가 사용된다. In general, grease is used to increase the lubricity and wear resistance of the surfaces of various sliding parts.
마찰은 상호 접촉하는 고체접동부의 미끄러짐에 대한 저항을 의미하며 윤활제는 그 저항을 감소시키는 매개물로써, 활동면 재료의 발열, 손상, 마멸을 방지하고 기계 효율의 향상시켜 준다. 윤활제는 두 고체 사이에 얇은 유막을 형성하여 전하중을 지탱함과 동시에 두 면을 완전히 분리시켜 감마작용을 하는 것이다. 일반적으로 접동면 사이에 투입, 적용되는 윤활제로서는 액상 윤활유(Oil), 그리스(Grease), 고체윤활제(Solid Lubricant) 등이 있다. Friction refers to the resistance to slipping of solid sliding parts in mutual contact, and lubricants are a medium that reduces that resistance, preventing heat generation, damage, and abrasion of moving surface materials and improving mechanical efficiency. A lubricant forms a thin oil film between two solids to support the entire load and at the same time completely separates the two surfaces to exert a gamma effect. Lubricants that are generally introduced and applied between sliding surfaces include liquid lubricants, grease, and solid lubricants.
상기한 윤활제 중에서 그리스는 광유에 비누류를 혼합한 끈끈한 풀 모양의 윤활유로서, 액상의 윤활유에 비하여 누설이 적고, 흡착력이 강하며 자체 밀봉 기능을 갖고 있으므로 먼지, 물, 고형물질, 가스등의 침입이 어렵다. 이러한 특성 때문에 누설에 의한 손실의 염려가 있는 경우, 먼지나 부식성 가스등과 접촉할 염려가 있는 경우에 많이 사용되고 있다. 특히 오일로 인하여 제품이 오염될 우려가 있는 각종 마찰부분의 윤활제로 광범위하게 사용되고 있으며, 자동차, 항공기, 선박 등의 수송기계와 제철, 제지 등의 설비기계, 건설기계, 전기기기 등의 전분야에 적용되고 있다. 또한 각종 기계 장치와 설비의 고성능화, 고효율화에 따라 그리스의 사용 환경은 고온, 고하중 같은 가혹 환경에서의 작동을 요구하고 있으며, 이에 따른 그리이스의 종류와 요구특성도 더욱 세분화되고 있다. Among the above-mentioned lubricants, grease is a sticky paste-like lubricant made by mixing mineral oil and soap. Compared to liquid lubricants, grease has less leakage, stronger adsorption, and has a self-sealing function, preventing the intrusion of dust, water, solid substances, gas, etc. difficult. Because of these characteristics, it is widely used in cases where there is a risk of loss due to leakage or when there is a risk of contact with dust or corrosive gas. In particular, it is widely used as a lubricant for various friction parts where products may be contaminated by oil, and is used in all fields such as transportation machinery such as automobiles, aircraft, and ships, equipment machinery such as steel and paper manufacturing, construction machinery, and electrical equipment. It is being applied. In addition, as the performance and efficiency of various mechanical devices and equipment increase, the grease usage environment requires operation in harsh environments such as high temperatures and high loads, and the types and required characteristics of grease are becoming more specialized accordingly.
그런데 그리스류는 저온에서 점도의 증가에 의해 기동력(torque)이 크고, 고온(200℃ 이상)에서는 점도가 낮아져 유막의 하중지지 능력이 감소하여 마찰력의 증가와 동시에 증발, 이유, 연화가 발생하여 윤활효과가 급격히 떨어지는 문제점이 있다. 또한 시멘트산업에서 주로 사용되는 튜브밀, 볼밀, 로타리밀과 같이 대형 개방형기어와 같은 저속, 고하중 설비의 마찰 표면부층간의 그리스 유출로 인하여 습동부재간의 직접적인 접촉이 발생하여 융착 등에 의해 높은 마찰 및 마모를 야기시키는 문제점이 있다. However, greases have a large torque at low temperatures due to an increase in viscosity, and at high temperatures (above 200°C), the viscosity decreases, reducing the load-bearing ability of the oil film, which increases friction and simultaneously causes lubrication. There is a problem that the effectiveness drops drastically. In addition, direct contact between sliding members occurs due to grease leakage between the friction surface layers of low-speed, high-load equipment such as large open gears such as tube mills, ball mills, and rotary mills, which are mainly used in the cement industry, resulting in high friction and friction due to fusion. There is a problem that causes wear.
선행기술을 예로 들면 특허문헌 1에 윤활기유와 증주제로 이루어지는 알루미늄 복합비누 그리스를 제조함에 있어서; 특히 가혹 온도 조건에서 윤활 특성 및 내마모 특성이 우수한 고체윤활제를 그리스에 첨가, 혼합하여 저온, 고온 및 고하중하에서도 접동부위의 마찰 및 마모를 감소시킨 고체윤활제를 함유하는 고온 내마모성 그리이스 조성물을 개시하고 있다.Taking the prior art as an example, Patent Document 1 describes the manufacture of aluminum composite soap grease consisting of lubricating base oil and thickener; In particular, a high-temperature wear-resistant grease composition containing a solid lubricant that reduces friction and wear of sliding areas even under low temperatures, high temperatures, and high loads is disclosed by adding and mixing a solid lubricant with excellent lubrication and wear resistance properties under harsh temperature conditions into grease. there is.
또 특허문헌 2에 60∼99.9 중량%의 그리스 및 0.1∼40 중량%의 고체윤활제를 첨가하여 이루어지는 고체윤활제를 함유하는 내마모성 그리스 조성물이 제시되어 있다.Additionally, Patent Document 2 discloses a wear-resistant grease composition containing 60 to 99.9% by weight of grease and a solid lubricant obtained by adding 0.1 to 40% by weight of a solid lubricant.
본 발명의 발명자는 고온, 고압, 고부화 상태의 설비 마찰 표면부와 같이 극압성능이 요구되는 윤활그리스를 발명하였다.The inventor of the present invention invented a lubricating grease that requires extreme pressure performance, such as for friction surfaces of equipment under high temperature, high pressure, and high enrichment conditions.
본 발명에서 해결하고자 하는 과제는 내산화성 및 내압성이 향상됨은 물론이고, 고온, 고압, 고부화 상태의 가혹한 조건에서도 윤활성을 유지할 수 있는 이황화텅스텐을 고체윤활제로서 함유한, 내마모성 및 극압성능이 향상된 윤활그리스를 제공하는데 있다.The problem to be solved by the present invention is lubrication with improved wear resistance and extreme pressure performance that not only improves oxidation resistance and pressure resistance, but also contains tungsten disulfide as a solid lubricant, which can maintain lubricity even under harsh conditions of high temperature, high pressure, and high enrichment. Greece is provided.
본 발명의 목적을 달성하기 위한 고체윤활제를 함유하는 윤활그리스는 기유 70 ~ 85 중량부, 증주제 3 ~ 10 중량부, 고체윤활제 8 ~ 20 중량부, 기타 첨가제 0.9 ~ 12 중량부를 포함한다.The lubricating grease containing a solid lubricant to achieve the object of the present invention includes 70 to 85 parts by weight of base oil, 3 to 10 parts by weight of thickener, 8 to 20 parts by weight of solid lubricant, and 0.9 to 12 parts by weight of other additives.
상기 첨가제는 부식방지제 0.1 ~ 0.5 중량부, 내마모제 0.1 ~ 5.0 중량부, 극압제 0.1 ~ 3.0 중량부, 산화방지제 0.5 ~ 3.0 중량부, 분산제 0.1 ~ 0.5 중량부를 포함한다.The additive includes 0.1 to 0.5 parts by weight of a corrosion inhibitor, 0.1 to 5.0 parts by weight of an anti-wear agent, 0.1 to 3.0 parts by weight of an extreme pressure agent, 0.5 to 3.0 parts by weight of an antioxidant, and 0.1 to 0.5 parts by weight of a dispersant.
본 발명에 따른 고체윤활제를 함유하는 윤활그리스에서 기유는 광유 또는 폴리알파올레핀(polyalphaolelfin, PAO)중 하나를 포함할 수 있고, 광유와 폴리알파올레핀(polyalphaolelfin, PAO)이 혼합된 기유일 수 있다.In the lubricating grease containing the solid lubricant according to the present invention, the base oil may include either mineral oil or polyalphaolefin (PAO), or may be a mixture of mineral oil and polyalphaolefin (PAO).
본 발명에 따른 고체윤활제를 함유하는 윤활그리스에서 증주제로는 고급지방산으로 검화된 복합증주제를 사용하고, 스테아린산의 혼합물을 검화시킨 알루미늄 비누 증주제를 복합증주제로 사용한다. In the lubricating grease containing the solid lubricant according to the present invention, a complex thickener saponified with higher fatty acids is used as a thickener, and an aluminum soap thickener saponified from a mixture of stearic acid is used as a complex thickener.
본 발명에 따른 고체윤활제를 함유하는 윤활그리스에서 고체윤활제는 이황화텅스텐(WS2) 3 ~ 5 중량부와 흑연(Graphite) 5 ~ 15 중량부를 포함한다.In the lubricating grease containing the solid lubricant according to the present invention, the solid lubricant includes 3 to 5 parts by weight of tungsten disulfide (WS2) and 5 to 15 parts by weight of graphite.
본 발명에 따른 고체윤활제를 함유하는 윤활그리스에서 부식방지제로 트리아졸(triazole)계 첨가제 및 사코신(sarcosine)계 첨가제를 사용할 수 있고, 트리아졸(triazole)계 첨가제는 0.1 중량부 내외를 포함하고, 사코신(sarcosine)계 첨가제는 0.2 중량부 내외를 포함한다.In the lubricating grease containing the solid lubricant according to the present invention, triazole-based additives and sarcosine-based additives can be used as corrosion inhibitors, and the triazole-based additives contain about 0.1 part by weight. , sarcosine-based additives contain approximately 0.2 parts by weight.
본 발명에 따른 고체윤활제를 함유하는 윤활그리스에서 내마모첨가제로는 알킬 디티오인산 아연(Zn-DTP) 계열 첨가제이고, 0.1 ~ 5.0 중량부를 포함한다. In the lubricating grease containing the solid lubricant according to the present invention, the anti-wear additive is an alkyl dithiophosphate (Zn-DTP)-based additive and contains 0.1 to 5.0 parts by weight.
본 발명에 따른 고체윤활제를 함유하는 윤활그리스에서 극압제로는 황(S)이 포함된 첨가제이고, 0.1 ~ 3.0 중량부를 포함한다.In the lubricating grease containing the solid lubricant according to the present invention, the extreme pressure agent is an additive containing sulfur (S) and contains 0.1 to 3.0 parts by weight.
본 발명에 따른 고체윤활제를 함유하는 윤활그리스에서 산화방지제로는 p,p'-디옥틸디페닐아민(p,p'-dioctyldiphenylamine)이고, 0.5 ~ 3.0 중량부를 포함한다.In the lubricating grease containing the solid lubricant according to the present invention, the antioxidant is p,p'-dioctyldiphenylamine and contains 0.5 to 3.0 parts by weight.
본 발명에 따른 고체윤활제를 함유하는 윤활그리스에서 분산제로는 스티렌 이소프렌(styene isoprene)이고, 0.1 내지 0.5 중량부를 포함한다.In the lubricating grease containing the solid lubricant according to the present invention, the dispersant is styrene isoprene and contains 0.1 to 0.5 parts by weight.
본 발명은 내산화성 및 내압성이 향상됨은 물론이고, 고온, 고압, 고부화 상태의 가혹한 조건에서도 윤활성을 유지할 수 있는 이황화텅스텐을 고체윤활제로서 함유하여 내마모성 및 극압성능이 향상된다.The present invention not only improves oxidation resistance and pressure resistance, but also improves wear resistance and extreme pressure performance by containing tungsten disulfide, which can maintain lubricity even under harsh conditions of high temperature, high pressure, and high enrichment, as a solid lubricant.
이하 본 발명의 실시예 및 시험예 등을 통하여 본 발명을 더욱 구체적으로 설명하겠으며, 아래 기재에 의해 본 발명이 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail through examples and test examples, but the present invention is not limited by the description below.
본 발명에 따른 고체윤활제를 함유하는 윤활그리스는 종래 윤활유 첨가제에 비해 내산화성 및 내압성이 향상됨은 물론이고, 고온, 고압, 고부화 상태의 가혹한 조건에서도 윤활성을 유지할 수 있는 이황화텅스텐을 고체윤활제로서 함유한, 내마모성 및 극압성능이 향상된 윤활그리스에 관한 것이다.The lubricating grease containing the solid lubricant according to the present invention not only has improved oxidation resistance and pressure resistance compared to conventional lubricant additives, but also contains tungsten disulfide as a solid lubricant, which can maintain lubricity even under harsh conditions such as high temperature, high pressure, and high enrichment. As a matter of fact, it relates to lubricating grease with improved wear resistance and extreme pressure performance.
본 발명의 일 측면에 따르면 기유 70 ~ 85 중량부, 증주제 3 ~ 10 중량부, 고체윤활제 8 ~ 20 중량부, 첨가제를 포함한다. 상기 첨가제는 부식방지제 0.1 ~ 0.5 중량부, 내마모제 0.1 ~ 5.0 중량부, 극압제 0.1 ~ 3.0 중량부, 산화방지제 0.5 ~ 3.0 중량부를 포함한다.According to one aspect of the present invention, it includes 70 to 85 parts by weight of base oil, 3 to 10 parts by weight of thickener, 8 to 20 parts by weight of solid lubricant, and additives. The additive includes 0.1 to 0.5 parts by weight of a corrosion inhibitor, 0.1 to 5.0 parts by weight of an anti-wear agent, 0.1 to 3.0 parts by weight of an extreme pressure agent, and 0.5 to 3.0 parts by weight of an antioxidant.
본 발명의 윤활그리스에 있어서 기유(base oil)는 마찰부위에 윤활막을 형성하여 실질적인 윤활작용을 하는 성분으로서, 특별히 한정되지 않으나 미네랄 오일, 폴리알파올레핀, 폴리알킬렌글리콜, 알킬벤젠, 폴리에테르, 폴리올에스테르, 에틸렌알파올레핀 공중합체, 폴리뷰텐, 방향족 에스테르, 힌다드 에스테, 2염기성 에스테르, 파라핀계 광유 및 나프텐계 광유로 이루어진 군에서 선택되는 어느 하나 이상일 수 있다. In the lubricating grease of the present invention, the base oil is a component that forms a lubricating film on the friction area and provides a practical lubricating effect, and is not particularly limited, but includes mineral oil, polyalphaolefin, polyalkylene glycol, alkylbenzene, polyether, It may be any one or more selected from the group consisting of polyol ester, ethylene alpha olefin copolymer, polybutene, aromatic ester, hindered ester, dibasic ester, paraffinic mineral oil, and naphthenic mineral oil.
바람직하게는 상기 기유는 광유 및 폴리알파올레핀 중에서 선택되는 어느 하나 이상인 것을 특징으로 한다.Preferably, the base oil is at least one selected from mineral oil and polyalphaolefin.
또한, 기유는 윤활그리스에 있어서, 70 내지 85 중량부로 포함될 수 있다.Additionally, base oil may be included in lubricating grease in an amount of 70 to 85 parts by weight.
본 발명의 고체윤활제는 윤활이 어려운 경계마찰 조건에서 사용되는 것으로서, 특히, 시멘트산업에서 주로 사용되는 튜브밀, 볼밀, 로타리밀과 같이 대형 개방형기어와 같은 저속, 고하중 설비의 윤활을 향상시키기 위한 것으로, 윤활그리스에 8 내지 20 중량부로 포함되고, 이황화텡스텐(WS2), 이황화몰리브덴(MoS2), 안티모니옥사이드(Sb2O3), 흑연(Graphite), 그래핀, 플로렌, 산화안티몬, 산화납, 산화티타니움, 산화철, 테프론(PTFE) 및 보론나이트라이드(BN)로 이루어진 군 중에서 선택되는 어느 하나 이상이다.The solid lubricant of the present invention is used in boundary friction conditions where lubrication is difficult. In particular, it is used to improve lubrication of low-speed, high-load equipment such as large open gears such as tube mills, ball mills, and rotary mills mainly used in the cement industry. , contained in lubricating grease at 8 to 20 parts by weight, tungsten disulfide (WS2), molybdenum disulfide (MoS2), antimony oxide (Sb2O3), graphite, graphene, florene, antimony oxide, lead oxide, oxide. It is one or more selected from the group consisting of titanium, iron oxide, Teflon (PTFE), and boron nitride (BN).
바람직하게는, 고체 윤활제는 낮은 마찰계수를 갖는 이황화텡스텐(WS2) 3 ~ 5 중량부와 흑연(Graphite) 5 ~ 15중량부를 포함한다. 상기 이황화텅스텐은 나노플로렌구조를 가진다.Preferably, the solid lubricant includes 3 to 5 parts by weight of tungsten disulfide (WS2), which has a low coefficient of friction, and 5 to 15 parts by weight of graphite. The tungsten disulfide has a nanofluorene structure.
고체윤활제인 이황화텅스텐의 나노플로렌구조는 일반적인 조건에서는 구름 베어링의 볼과 같이 작용하여 윤활제의 윤활성을 촉진하고, 금속표면에 손상이 있는 경우에는 다층구조의 플로렌이 일정한 온도와 압력이 존재하게 되면 트라이보 필름을 방출하여 금속표면에 윤활이 되는 다층의 코팅막을 형성함으로써, 윤활성을 유지하도록 한다.The nanofluorene structure of tungsten disulfide, a solid lubricant, acts like a ball in a rolling bearing under normal conditions to promote the lubricity of the lubricant, and when there is damage to the metal surface, the multilayer structure of fluorene maintains a constant temperature and pressure. When this happens, the tribo film is released to form a multi-layer coating film that lubricates the metal surface, thereby maintaining lubricity.
본 발명의 첨가제는 부식방지제 0.1 ~ 0.5 중량부, 내마모제 0.1 ~ 5.0 중량부, 극압제 0.1 ~ 3.0 중량부, 산화방지제 0.5 ~ 3.0 중량부, 분산제 0.1 내지 0.5 중량부를 포함한다.The additive of the present invention includes 0.1 to 0.5 parts by weight of a corrosion inhibitor, 0.1 to 5.0 parts by weight of an anti-wear agent, 0.1 to 3.0 parts by weight of an extreme pressure agent, 0.5 to 3.0 parts by weight of an antioxidant, and 0.1 to 0.5 parts by weight of a dispersant.
본 발명의 분산제는 윤활그리스에 0.1 내지 0.5 중량부 포함되어, 고체윤활제인 나노플로렌구조의 이황화텅스텐과 함께 투입되어 고속 교반기에 의해 교반되어 상기 이황화텅스텐을 분산시킴으로써, 상기 이황화텅스텐이 부유된 상태를 유지할 수 있도록 한다. 상기 분산제는 특별히 한정되지 아니하여 당업계에서 사용되는 통상의 분산제는 모두 사용할 있으며, 바람직하게는 고분자 첨가제인 스티렌 이소프렌(styene isoprene)이다.The dispersant of the present invention is contained in lubricating grease at 0.1 to 0.5 parts by weight, and is added together with nanofluorene-structured tungsten disulfide, which is a solid lubricant, and stirred by a high-speed stirrer to disperse the tungsten disulfide, so that the tungsten disulfide is suspended. to be able to maintain. The dispersant is not particularly limited, and all common dispersants used in the industry can be used, preferably styrene isoprene, a polymer additive.
본 발명의 부식방지제로 트리아졸(triazole)계 첨가제 및 사코신(sarcosine)계 첨가제를 사용할 수 있고, 트리아졸(triazole)계 첨가제는 0.1 중량부 내외를 포함하고, 사코신(sarcosine)계 첨가제는 0.2 중량부 내외를 포함한다.A triazole-based additive and a sarcosine-based additive can be used as the corrosion inhibitor of the present invention, and the triazole-based additive contains about 0.1 part by weight, and the sarcosine-based additive Contains approximately 0.2 parts by weight.
본 발명의 내마모첨가제는 0.1 ~ 5.0 중량부를 포함되며, 당업계에서 사용되는 통상의 물질을 모두 사용할 수 있고, 바람직하게는 알킬 디티오인산 아연(Zn-DTP) 계열 첨가제이다. The anti-wear additive of the present invention contains 0.1 to 5.0 parts by weight, and all common materials used in the industry can be used, preferably an alkyl dithiophosphate zinc (Zn-DTP) based additive.
본 발명의 극압제로는 황(S)이 포함된 첨가제이고, 0.1 ~ 3.0 중량부를 포함한다.The extreme pressure agent of the present invention is an additive containing sulfur (S) and contains 0.1 to 3.0 parts by weight.
본 발명의 산화방지제로는 0.5 ~ 3.0 중량부를 포함되며, 당업계에서 사용되는 통상의 물질을 모두 사용할 수 있고, 바람직하게는 p,p'-디옥틸디페닐아민(p,p'-dioctyldiphenylamine)이다.The antioxidant of the present invention contains 0.5 to 3.0 parts by weight, and all common substances used in the industry can be used, preferably p,p'-dioctyldiphenylamine. .
이하, 본 발명을 실시예에 의하여 더욱 상세히 설명하나, 본 발명의 범위가 실시예에 의해 제한되는 것은 아니다.Hereinafter, the present invention will be described in more detail through examples, but the scope of the present invention is not limited by the examples.
<실시예><Example>
1. 윤활그리스 내마모성능 시험1. Lubricating grease wear resistance test
고체윤활제로 나노플로렌구조를 갖는 이황화텅스텐과 흑연을 포함하여 제조된 윤활그리스(실시예)와, 고체윤활제로서 이황화텅스텐 외에 종래 시판되는 고체윤활제를 포함한 윤활그리스(대조군)에 대한 내마모성능 시험을 실시하였다.Wear resistance performance tests were conducted on a lubricating grease (example) manufactured including graphite and tungsten disulfide having a nanofluorene structure as a solid lubricant, and a lubricating grease (control group) containing a conventionally commercially available solid lubricant in addition to tungsten disulfide as a solid lubricant. It was carried out.
이때, 실시예의 윤활그리스는 기유 80 중량부, 증주제 7 중량부, 고체윤활제로 이황화텅스텐(WS2) 4 중량부와 흑연(Graphite) 10 중량부, 분산제(styene isoprene) 0.3 중량부, 부식방지제 0.3 중량부, 내마모제(알킬 디티오인산 아연(Zn-DTP)) 3 중량부, 극압제(황(S)) 2 중량부, 산화방지제(p,p'-디옥틸디페닐아민(p,p'-dioctyldiphenylamine)) 1 중량부를 포함하여 제조하였으며, 대조군은 본 실시예에 있어서 고체윤활제를 성분만이 상이할 뿐, 상기 실시예와 동일한 방법으로 제조되었다.At this time, the lubricating grease of the example contains 80 parts by weight of base oil, 7 parts by weight of thickener, 4 parts by weight of tungsten disulfide (WS2) and 10 parts by weight of graphite as a solid lubricant, 0.3 parts by weight of dispersant (styene isoprene), and 0.3 parts by weight of corrosion inhibitor. 3 parts by weight, anti-wear agent (zinc alkyl dithiophosphate (Zn-DTP)), 3 parts by weight, extreme pressure agent (sulfur (S)) 2 parts by weight, antioxidant (p,p'-dioctyldiphenylamine (p,p'-dioctyldiphenylamine) )) It was prepared containing 1 part by weight, and the control group was prepared in the same manner as in the above example, except that the solid lubricant composition was different in this example.
이에 따른 결과는 하기 표 1에 나타내었다.The results are shown in Table 1 below.
시간 : 60분
rpm : 1,200rpm
온도 : 75℃ Type: ball on ball
Time: 60 minutes
rpm: 1,200rpm
Temperature: 75℃
2. 윤활그리스 극압성능 시험2. Lubricating grease extreme pressure performance test
상기 제조한 실시예 및 대조군에 대하여 극압성능 시험을 실시하여 하기 표 2에 나타내었다.An extreme pressure performance test was performed on the prepared examples and control groups and is shown in Table 2 below.
시간 : 10분
rpm : 1,800rpm
온도 : 25℃ Type: ball on ball
Time: 10 minutes
rpm: 1,800rpm
Temperature: 25℃
이상과 같이, 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술사상과 아래에 기재될 특허범위의 균등 범위 내에서 다양한 수정 및 변형이 가능함은 물론이다.As described above, although the present invention has been described with limited examples and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following will be understood by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the equivalent scope of the patent scope to be described.
Claims (3)
상기 고체윤활제는 이황화텅스텐(WS2) 3 ~ 5 중량부와 흑연(Graphite) 5 ~ 15 중량부를 포함하는 고체윤활제를 함유하는 윤활그리스.According to paragraph 1,
The solid lubricant is a lubricating grease containing a solid lubricant containing 3 to 5 parts by weight of tungsten disulfide (WS2) and 5 to 15 parts by weight of graphite.
상기 첨가제는 내마모첨가제로는 알킬 디티오인산 아연(Zn-DTP) 계열 첨가제이고, 0.1 ~ 5.0 중량부를 포함하는 고체윤활제를 함유하는 윤활그리스.According to paragraph 1,
The additive is an alkyl dithiophosphate (Zn-DTP)-based additive as an anti-wear additive, and is a lubricating grease containing 0.1 to 5.0 parts by weight of a solid lubricant.
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| KR20180076640A (en) | 2016-12-28 | 2018-07-06 | 경북대학교 산학협력단 | Gear oil composition |
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