CN100999692A - 基于一氮化硼的润滑剂添加剂 - Google Patents

基于一氮化硼的润滑剂添加剂 Download PDF

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CN100999692A
CN100999692A CNA2007100013302A CN200710001330A CN100999692A CN 100999692 A CN100999692 A CN 100999692A CN A2007100013302 A CNA2007100013302 A CN A2007100013302A CN 200710001330 A CN200710001330 A CN 200710001330A CN 100999692 A CN100999692 A CN 100999692A
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lubricant additive
described lubricant
boron nitride
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S·E·沃克
M·拉希姆
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National Starch and Chemical Investment Holding Corp
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Abstract

一种食品级、低摩擦润滑剂添加剂，用于与油基润滑剂一起使用。该添加剂包括与分散剂和油载体结合的一氮化硼。

Description

基于一氮化硼的润滑剂添加剂
技术领域
【0001】本发明涉及掺入油基润滑剂中的食品级、低摩擦添加剂。
背景技术
【0002】食品加工业不断努力，力图通过提高制造效率和减少制造时间而达到更高水平的成就。在该行业的改进措施中，包括更快的生产线速度及更高操作温度。这两项条件都可以对加工过程中使用的链、齿轮和其它可移动部件的寿命和维护产生负面影响。目前的润滑技术由石墨和/或添加剂组成，但是这些润滑剂并不适于可能与食品附带接触的用途。此外，面包房使用的烤箱可能会经历高达1000的高温，而现有的食品级基础油无法在这些极端的温度下工作。因此，在该行业中对食品级润滑剂添加剂存在需求，所述食品级润滑剂添加剂将会在较高温度下以及在食品加工过程中面临的其它苛刻条件下工作。此类润滑剂添加剂将会提供较长的润滑时间、较长的设备寿命、以及降低的维护成本和能源成本。
发明内容
【0003】本发明公开了一种食品级、低摩擦添加剂，用于与油基润滑剂一起使用。该添加剂包括与分散剂和油载体结合的一氮化硼。
具体实施方式
【0004】食品和其它加工过程所使用的机械设备由链、齿轮和其它可动部件组成，它们需要高水平的润滑。润滑的质量对于确保设备适当起作用是关键的。不适当润滑的设备将会有大量的故障时间，并且需要比适当润滑的设备更加频繁的更换和维修。在食品加工过程中使用的设备有进一步的要求，其润滑剂必须被批准可与食品相接触，因此严格限制潜在的润滑剂成分。油基润滑剂在该行业中被经常使用，但是此类润滑剂要求额外的低摩擦添加剂，以便在加工过程中所面临的日益苛刻的环境下适当地工作。尽管本申请通篇在讲述本发明的润滑剂添加剂是用于食品级应用的，但是应当理解这些润滑剂添加剂也可以被用在所期望的非食品级应用中。
【0005】本发明的润滑剂添加剂包括一氮化硼，其与一种或多种分散剂和一种或多种油载体结合。所述一氮化硼优选地是食品级六方一氮化硼，其具有粒度范围为大约0.1至大约10微米，平均粒度范围为大约1至大约2微米。一种此类一氮化硼是AC6003，可从GE AdvancedMaterials商业获得。该一氮化硼组分占添加剂的大约0.5wt％至大约50wt％，并且优选为添加剂的大约5wt％至大约20wt％。
【0006】润滑添加剂的分散剂必须是产生稳定的食品级胶态分散的分散剂。可以被使用的分散剂之一是经α-烯烃改性的烷基化聚乙烯吡咯烷酮。优选地，所述聚乙烯吡咯烷酮的烷基组分在从C-4至C-30线性部分的范围内变化，其浓度范围为大约10％至大约80％。一种此类分散剂是商业可得的，如来自ISP的GANEX V-216。所述分散剂也可以是经二十碳烯改性的烷基化聚乙烯吡咯烷酮，以GANEX V-220(来自ISP)商业获得；经三十烷基(tricontanyl)改性的烷基化聚乙烯吡咯烷酮，可从ISP以WP-660商业获得；或者经十六烷改性的烷基化聚乙烯吡咯烷酮，可从ISP以GANEX V-516商业获得。可以使用的其它分散剂实例包括合成酯类，诸如甘油二油酸酯、油酸异丙酯、甘油单油酸酯及其混合物。此类分散剂的实例为PRIOLUBE 1406；PRIOLUBE1407；PRIOLUBE 1408；PRIOLUBE 1409；和PRIOLUBE 1412，可从Uniqema商业获得。所述分散剂组分占添加剂的大约1wt％至大约30wt％，并且优选为添加剂的大约5wt％至大约20wt％。
【0007】所述油载体必须与所述分散剂相容。优选地，使用一种或多种合成载体。此类合成载体包括聚α-烯烃和聚(亚烷基)二醇。食品级聚α-烯烃包括从ExxonMobil商业获得的SPECRASYN和从ChevronPhillips商业获得的SYNFLUID。商业可得的聚(亚烷基)二醇包括从Uniqema商业获得的EMKAROX和从BASF商业获得的PLURASAFE。诸如这些的合成载体能够在高温和苛刻条件下提供适当的润滑添加剂性能。所述合成载体组分占添加剂的大约45wt％至大约99wt％，并且优选为添加剂的大约70wt％至大约80wt％。也可以使用非合成油载体，包括但不限于食品级轻油。
【0008】在本发明进一步的实施方案中，本发明的润滑剂添加剂与油基润滑剂组合而形成适于高温和其它苛刻条件的润滑剂复合剂(lubricant package)。可以向其中加入所述添加剂的示例性油基润滑剂括但不限于商用型油基润滑剂。形成此类润滑剂的方法是向油基润滑剂中加入期望量的润滑剂添加剂。
【0009】本发明可以通过以下实施例被进一步描述，该实施例仅仅是说明本发明，而并非是限定本发明的范围。
实施例
润滑剂添加剂按照以下方法制作。将一氮化硼加入分散剂中并充分混合。可以使用商用型低剪切混合器或捏和机或者使用考雷司铜铝合金(cowles)叶片通过高速分散完成此初加工。在研磨机夹套(mill jacket)中使用冷却水，继续该分散过程至少14小时，形成糊。当一氮化硼粉已被完全混合时，应当将任何剩余的分散剂与足量的油一起加入，将该组合物稀释至固体范围为大约13％至大约15％的可倾倒稠度。然后将所述掺合物过滤或者离心以保持最大粒度为大约5微米。一旦达到这样的粒度，就可以将所述材料进一步稀释至期望的固体含量。
【0010】出于测试目的，将添加剂浓缩物加入到各种载体中，以形成带有大约1wt％至2wt％固体润滑剂添加剂的润滑复合剂(lubricationpackage)。所述润滑复合剂在表1中阐明。
表1.润滑套装组合物
材料     A(wt％)   B(wt％)   C(wt％)   D(wt％)   E(wt％)
一氮化硼     1     0.2     1
石墨     1
PTFE     0.8
矿物油     99
酯     99
聚(亚烷基)二醇     99
聚α-烯烃     100     99
【0011】在相对于静止圆筒转动金属圆筒时，通过测量电动机所用的电流强度，测试表1中所列的润滑复合剂，以测定它们的润滑性质。所述润滑复合剂与对比组合物A——其为聚α-烯烃——一起被检测。将所述润滑复合剂应用于该圆筒，并且每五分钟测量电流强度。测试结果在表2中示出。
表2.润滑剂添加剂测试结果。
    组合物/时间     电流强度5分钟     电流强度10分钟     电流强度15分钟     电流强度20分钟     电流强度25分钟     电流强度30分钟
    A     10     10     9.8     9.7     9.7     10
    B     9.5     9.3     9.5     9.5     9.1     9
    C     9.6     9     8.9     8.9     8.9     8.9
    D     8.1     7.9     7.9     7.9     7.9     8
    E     8.1     7.9     7.9     7.9     7.6     7.5
【0012】如表2所示，含一氮化硼的润滑复合剂提供了优良的润滑，如通过转动圆筒所需的电流强度的减少所证明。
【0013】可以对本发明作出许多修改和变化，而不背离本发明的精神和范围，这对于本领域的技术人员而言将是显而易见的。本文中所述的具体实施方案仅以实施例的方式提供，并且本发明仅通过所附权利要求以及这样的权利要求所授权的等效物的全部范围来限定。

Claims (19)

1.润滑剂添加剂，包括一氮化硼、一种或多种分散剂和一种或多种油载体。
2.权利要求1所述的润滑剂添加剂，其中所述油载体包括一种或多种合成载体。
3.权利要求1所述的润滑剂添加剂，其中所述一氮化硼是六方一氮化硼，具有范围为大约0.1至大约10微米的粒度。
4.权利要求1所述的润滑剂添加剂，其中所述分散剂是烷基化聚乙烯吡咯烷酮，其被一种或多种基团改性，所述基团包括α-烯烃、二十碳烯、三十烷基、十六烷或其混合物。
5.权利要求4所述的润滑剂添加剂，其中所述聚乙烯吡咯烷酮的烷基部分具有范围从C-4至C-30的线性部分。
6.权利要求1所述的润滑剂添加剂，其中所述分散剂包括一种或多种合成酯。
7.权利要求6所述的润滑剂添加剂，其中所述合成酯选自甘油二油酸酯、油酸异丙酯、甘油单油酸酯及其混合物。
8.权利要求2所述的润滑剂添加剂，其中所述合成载体选自聚α-烯烃、聚(亚烷基)二醇及其混合物。
9.权利要求1所述的润滑剂添加剂，其中所述润滑剂添加剂适于食品级应用。
10.权利要求1所述的润滑剂添加剂，其中所述润滑剂添加剂包含范围为大约0.5wt％至大约50wt％的一氮化硼。
11.权利要求10所述的润滑剂添加剂，其中所述润滑剂添加剂包含范围为大约5wt％至大约20wt％的一氮化硼。
12.权利要求1所述的润滑剂添加剂，其中所述润滑剂添加剂包含范围为大约5wt％至大约30wt％的分散剂。
13.权利要求1所述的润滑剂添加剂，其中所述润滑剂添加剂包含范围为大约5wt％至大约20wt％的分散剂。
14.权利要求1所述的润滑剂添加剂，其中所述油载体包含范围为大约45wt％至大约99wt％的合成载体。
15.权利要求14所述的润滑剂添加剂，其中所述油载体包含范围为大约70wt％至大约80wt％的合成载体。
16.油基润滑复合剂，包括油基润滑剂和权利要求1所述的润滑剂添加剂。
17.权利要求1所述的润滑剂添加剂，其中所述油载体包括一种或多种轻油。
18.一种形成油基润滑复合剂的方法，包括将权利要求1所述的润滑剂添加剂加入油基润滑剂的步骤。
19.食品级润滑剂添加剂，包括一氮化硼、一种或多种分散剂和一种或多种合成油载体。
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