CN111892979B - 一种航空关节轴承用自润滑衬垫材料及其应用 - Google Patents

一种航空关节轴承用自润滑衬垫材料及其应用 Download PDF

Info

Publication number
CN111892979B
CN111892979B CN202010776710.9A CN202010776710A CN111892979B CN 111892979 B CN111892979 B CN 111892979B CN 202010776710 A CN202010776710 A CN 202010776710A CN 111892979 B CN111892979 B CN 111892979B
Authority
CN
China
Prior art keywords
acrylate monomer
self
lubricating
liner material
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010776710.9A
Other languages
English (en)
Other versions
CN111892979A (zh
Inventor
王宏刚
高贵
任俊芳
陈生圣
赵更锐
刘文广
杨生荣
张俊彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lanzhou Zhongke Kailu Lubrication And Protection Technology Co ltd
Lanzhou Institute of Chemical Physics LICP of CAS
Original Assignee
Lanzhou Zhongke Kailu Lubrication And Protection Technology Co ltd
Lanzhou Institute of Chemical Physics LICP of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lanzhou Zhongke Kailu Lubrication And Protection Technology Co ltd, Lanzhou Institute of Chemical Physics LICP of CAS filed Critical Lanzhou Zhongke Kailu Lubrication And Protection Technology Co ltd
Priority to CN202010776710.9A priority Critical patent/CN111892979B/zh
Publication of CN111892979A publication Critical patent/CN111892979A/zh
Application granted granted Critical
Publication of CN111892979B publication Critical patent/CN111892979B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00Lubricating 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
    • C10M169/04Mixtures of base-materials and additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F222/00Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
    • C08F222/10Esters
    • C08F222/1006Esters of polyhydric alcohols or polyhydric phenols
    • C08F222/104Esters of polyhydric alcohols or polyhydric phenols of tetraalcohols, e.g. pentaerythritol tetra(meth)acrylate
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00Lubricating 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
    • C10M169/04Mixtures of base-materials and additives
    • C10M169/044Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M177/00Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/10Construction relative to lubrication
    • F16C33/1095Construction relative to lubrication with solids as lubricant, e.g. dry coatings, powder
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/12Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/14Special methods of manufacture; Running-in
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04Elements
    • C10M2201/041Carbon; Graphite; Carbon black
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06Metal compounds
    • C10M2201/065Sulfides; Selenides; Tellurides
    • C10M2201/066Molybdenum sulfide
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/10Compounds containing silicon
    • C10M2201/102Silicates
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/06Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084Acrylate; Methacrylate
    • C10M2209/0845Acrylate; Methacrylate used as base material
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06Perfluoro polymers
    • C10M2213/062Polytetrafluoroethylene [PTFE]
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/026Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrile group
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/044Polyamides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20Thermoplastic resins
    • F16C2208/72Acrylics, e.g. polymethylmethacrylate [PMMA]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00Articles relating to transporting
    • F16C2326/43Aeroplanes; Helicopters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Support Of The Bearing (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

本发明涉及一种航空关节轴承用自润滑衬垫材料,该材料按重量百分比计由以下组分混合均匀制得:聚丙烯酸酯树脂20%~77%、增韧剂5%~11%、短切纤维增强剂10%~70%、固体润滑剂5%~20%。所述聚丙烯酸酯树脂由丙烯酸酯单体、引发剂和促进剂组成;所述丙烯酸酯单体按重量百分比计由以下组分混合均匀制得:四官能度丙烯酸酯单体60%~80%,三官能度丙烯酸酯单体10%~50%,二官能度丙烯酸酯单体10%;所述引发剂的用量为所述丙烯酸酯单体重量的0.2%~0.7%;所述促进剂的用量为所述丙烯酸酯单体重量的0.2%~0.7%。同时,本发明还公开了该材料的应用。本发明性能优异,可通过注射成型在关节轴承的外圈和内圈间隙中制备具有良好的承载能力和耐磨寿命的航空自润滑关节轴承。

Description

一种航空关节轴承用自润滑衬垫材料及其应用
技术领域
本发明涉及自润滑关节轴承技术领域,尤其涉及一种航空关节轴承用自润滑衬垫材料及其应用。
背景技术
自润滑关节轴承具有结构简单、自润滑以及免维护等特点,在航空飞机中具有广泛应用。自润滑关节轴承通过内圈和外圈的滑动摩擦实现轴承的承载与传动功能。与传统油脂润滑的关节轴承相比,自润滑关节轴承通常在内外圈间隙中采用具有低摩擦系数的耐磨材料,在使用中不需二次加注润滑脂,可满足飞机对难以维护部位的服役要求。
长期以来,航空工业用高承载自润滑关节轴承的衬垫主要采用长纤维混合编织成型的织物复合材料。首先将复合织物材料粘接在加工后的轴承外圈内表面或内圈外表面上,然后利用特殊成型工艺将内外圈合套后形成关节轴承胚件,最后通过精密机械加工制造出自润滑关节轴承。随着航空系统对自润滑关节轴承性能和可靠性要求的不断提高,以织物型复合材料作为耐磨衬垫的自润滑关节轴承,已不能完全满足工况应用要求,具体包括:外圈内表面的形位公差难以精确控制,使用过程中常出现衬垫磨损不均匀、衬垫边缘脱落等现象;不均匀的内外圈配合间隙导致轴承的启动力矩不稳定;内外圈合套成型工艺会损伤衬垫的机械强度和结合强度,不但制约了衬垫材料性能的发挥,而且降低了关节轴承的承载能力,影响了关节轴承的可靠性和使用寿命。
随着材料新技术的发展,美国Kamatics、RBC以及NHBB等航空轴承公司已相继开发出以增强高分子材料作为耐磨衬垫的新型自润滑关节轴承代替织物型衬垫关节轴承,不但具有良好的抗承载能力和耐磨性,而且可实现衬垫与外圈内表面或内圈外表面的良好结合;以此技术制造的关节轴承启动力矩小、运行过程摩擦系数稳定,衬垫厚度可灵活调控,克服了织物衬垫型自润滑轴承存在的不足,满足航空工业多种工况的不同技术要求。
目前,关节轴承用高性能自润滑耐磨衬垫材料技术得到了迅速发展。专利US4006051涉及了一种轴承用低摩擦薄层衬垫材料制备方法,以大孔隙玻璃纤维、金属纤维或高分子纤维织物作为背衬层,以小空隙聚四氟乙烯纤维织物作为润滑层,利用热固性树脂充分浸渍背衬层织物和润滑层织物,利用热压工艺进行材料复合成型,制备出满足航空自润滑关节轴承要求的低摩擦薄层衬垫材料。专利US4053665涉及了一种模塑型自润滑关节轴承的制造方法,在关节轴承内外圈之间预留出型腔间隙,在内圈外表面上涂覆隔离剂,在外圈上开设注射流道,通过注射成型含有聚四氟乙烯的热固性丙烯酸树脂,制造出自润滑关节轴承。此方法的缺点在于,关节轴承外圈上的流道降低了关节轴承的承载能力,一定程度上限制了轴承的广泛应用。
除上述自润滑复合材料外,自润滑高分子涂层也可应用于滑动轴承领域。专利US6284322涉及一种低摩擦涂层材料应用于航空轴承中,主要由60wt%~95wt%的耐高温环氧树脂、1wt%~30wt%二硫化钼和1wt%~20wt%的聚酰亚胺粉末组成,以上组合物质分散在丁酮和丙二醇单甲醚的混合溶剂中,喷涂在金属表面后在200℃~260℃固化1~3小时。专利CN107936768A公开了一种粘结固体润滑涂料及自润滑关节轴承制备方法,该涂料由环氧树脂、固化剂、聚四氟乙烯、二硫化钼和氟碳表面活性剂复配组成;将粘结固体润滑涂料涂覆在关节轴承内圈外表面上形成固体润滑涂层,装配后的自润滑关节轴承具有较低的摩擦系数、磨损量和摩擦温度,大幅改善了关节轴承的摩擦学性能。上述方法制备的自润滑关节轴承虽然具有较低的摩擦系数,但是由于涂层厚度较薄、承载能力较弱,导致自润滑关节轴承在高载荷的耐磨寿命不足,制约了其在航空工业领域的广泛应用。
专利CN105733408B公开了一种用于关节轴承的自润滑涂层及其制备方法,所述的自润滑涂层主要包括:环氧树脂、含氟环氧树脂、酚醛树脂、含氟树枝状高分子、溶剂、硅烷偶联剂、填料、固化促进剂、表面活性剂。主要采用的制备方法为,将酚醛树脂溶于有机溶剂中,搅拌后得到透明溶液,在溶液中加入环氧树脂和含氟环氧树脂、搅拌后依次加入含氟树枝状高分子、硅烷偶联剂、无机填料、固化促进剂和表面活性剂,搅拌后得到含氟自润滑涂层胶料,将含氟自润滑涂层胶料刮涂在衬垫上,将衬垫烘干,再粘接在处理过的金属平板上进行固化,即得用于关节轴承的自润滑涂层。上述方法制备的自润滑涂层材料具有良好的减摩性能,可是关节轴承的服役寿命很大程度上依赖于长纤维织物衬垫的承载能力和耐磨性,内外圈合套成型工艺对衬垫材料机械强度和结合强度的损伤依然未得到有效解决。
发明内容
本发明所要解决的技术问题是提供一种性能优异的航空关节轴承用自润滑衬垫材料。
本发明所要解决的另一个技术问题是提供该航空关节轴承用自润滑衬垫材料的应用。
为解决上述问题,本发明所述的一种航空关节轴承用自润滑衬垫材料,其特征在于:该材料按重量百分比计由以下组分混合均匀制得:聚丙烯酸酯树脂20%~77%、增韧剂5%~11%、短切纤维增强剂10%~70%、固体润滑剂5%~20%;所述聚丙烯酸酯树脂由丙烯酸酯单体、引发剂和促进剂组成;所述丙烯酸酯单体按重量百分比计由以下组分混合均匀制得:四官能度丙烯酸酯单体60%~80%,三官能度丙烯酸酯单体10%~50%,二官能度丙烯酸酯单体10%;所述引发剂的用量为所述丙烯酸酯单体重量的0.2%~0.7%;所述促进剂的用量为所述丙烯酸酯单体重量的0.2%~0.7%。
所述四官能度丙烯酸酯单体是指2-三羟甲基丙烷四丙烯酸酯(DI-TMPTA),其分子链结构为:
Figure DEST_PATH_IMAGE001
所述三官能度丙烯酸酯单体是指三羟甲基丙烷三丙烯酸酯(TMPTMA)或季戊四醇三丙烯酸酯(PETA);其分子链结构为:
Figure 8404DEST_PATH_IMAGE002
,其中R1为羟基或甲基。
所述二官能度丙烯酸酯单体是指乙二醇二甲基丙烯酸酯(EDMA)或乙氧化双酚A二甲基丙烯酸酯(BPA2EODMA);其分子链结构为:
Figure DEST_PATH_IMAGE003
,其中R2为乙基或双酚A基团。
所述引发剂是指有机过氧化物,该有机过氧化物为过氧化二苯甲酰(BPO)或过氧化二异丙苯(DCP)。
所述促进剂是指N,N-二甲基对甲苯胺(DMPT)或二乙基苯胺(DEA)。
所述增韧剂是指乙烯基封端的丁腈橡胶(VPBN),其室温环境下的粘度为1×105至5×105CP,玻璃化转变温度小于-45℃。
所述短切纤维增强剂是指玻璃纤维、碳纤维和芳纶纤维中的一种或两种,其长度为30μm~80μm。
所述固体润滑剂是指聚四氟乙烯、石墨、二硫化钼中的一种或两种,其粒径为10μm以下。
如上所述的一种航空关节轴承用自润滑衬垫材料的应用,其特征在于:首先将关节轴承的不锈钢440C内圈和17-4PH外圈装配预留间隙后,置入相应的模具中;然后将自润滑衬垫材料装入注射胶枪中的胶管中,利用注射胶枪进行注射成型,同时控制注射压力为0.5M±0.2Pa,保压时间5s~20s;其次,将模具置入压力容器中,充入氮气,保持气体压力为0.5MPa~2.5MPa,加热容器至温度为55℃~115℃,保温时间60min~240min后降至室温;最后,将关节轴承置入烘箱,加热至165℃~195℃,保温24小时以上,随炉冷却至室温即可。
本发明与现有技术相比具有以下优点:
1、本发明中的聚丙烯酸酯树脂主要利用丙烯酸酯单体通过链引发、链增长以及链终止反应实现本体聚合,获得具有优异物理机械性能的衬垫基体材料。
2、本发明中的丙烯酸酯单体由四官能度丙烯酸酯单体、三官能度丙烯酸酯单体、二官能度丙烯酸酯单体组成,利用具有多种不同官能度的丙烯酸酯单体,经过分子链引发实现本体聚合。
3、本发明利用有机过氧化物作为引发剂,利用有机胺作为促进剂,共同组成氧化还原体系对分子链进行链引发、链增长以及链终止反应。
4、经测试,本发明自润滑衬垫材料的硬度≥85HRM,压缩模量≥2.0GPa。以该衬垫材料制备的自润滑关节轴承,在静载荷为450MPa下,衬垫的压缩永久变形≤0.075mm。
5、本发明自润滑衬垫材料可通过注射成型在关节轴承的外圈和内圈间隙中,制备具有良好的承载能力和耐磨寿命的航空自润滑关节轴承。含有本发明所述衬垫材料的自润滑关节轴承在室温环境下,240MPa动载荷,±25°角度,10次/分钟的摆动工况条件下经历25000次考核,磨损深度≤0.11mm,如图2所示。因此,本发明自润滑衬垫材料可以满足航空飞机机体、襟副翼、起落架等摆动运动下的耐磨性和服役寿命。
附图说明
下面结合附图对本发明的具体实施方式作进一步详细的说明。
图1为含有本发明所述自润滑衬垫材料的自润滑关节轴承。
图中:1-外圈,2-内圈,3-自润滑衬垫材料。
图2为含有本发明所述自润滑衬垫材料的自润滑关节轴承摩擦磨损性能。
具体实施方式
实施例1 一种航空关节轴承用自润滑衬垫材料,该材料由聚丙烯酸酯树脂71g、增韧剂18g、短切纤维增强剂244g、固体润滑剂18g混合均匀制得。
具体方法如下:依次称取56g DI-TMPTA,7g TMPTMA,7g EDMA后,在真空混合机中进行均匀混合10min,加入VPBN 18g后继续混合10min,再加入0.5g BPO搅拌混合10min,进行真空抽滤,控制真空度为0.080MPa~0.085MPa,然后依次加入碳纤维244g,聚四氟乙烯粉18g,继续搅拌抽真空30min后加入DMPT 0.5g,混合10min后取出即得。
该自润滑衬垫材料的应用:
首先将关节轴承的不锈钢440C内圈1和17-4PH外圈2装配预留间隙后,置入相应的模具中;然后将所得自润滑衬垫材料3装入注射胶枪中的胶管中,利用注射胶枪进行注射成型,同时控制注射压力为0.5M±0.2Pa,注射完毕后保持压力20s;其次,将模具置入密封压力容器中,充入氮气,保持气体压力为1.5MPa,加热容器至温度为110℃±5℃,保温时间60min后降至室温;最后,将关节轴承置入烘箱,加热至180℃±5℃,保温24小时以上,随炉冷却至室温即可,如图1所示。
实施例2 一种航空关节轴承用自润滑衬垫材料,该材料由聚丙烯酸酯树脂271 g、增韧剂18 g、短切纤维增强剂36 g、固体润滑剂26 g,混合均匀制得。
具体方法如下:依次称取216g DI-TMPTA,27g PETA,27g BPA2EODMA后,在真空混合机中进行均匀混合10min,加入VPBN 18g后继续混合10min,再加入0.5g BPO搅拌混合10min,进行真空抽滤,控制真空度为0.080MPa~0.085MPa,然后依次加入玻璃纤维36g,二硫化钼粉26g,继续搅拌抽真空30min后加入0.5g DMPT,混合10min后取出即得。
该自润滑衬垫材料的应用:
首先将关节轴承的不锈钢440C内圈1和17-4PH外圈2装配预留间隙后,置入相应的模具中;然后将所得自润滑衬垫材料3装入注射胶枪中的胶管中,利用注射胶枪进行注射成型,同时控制注射压力为0.5M±0.2Pa,注射完毕后保持压力20s;其次,将模具置入密封压力容器中,充入氮气,保持气体压力为1.5MPa,加热容器至温度为100℃±5℃,保温时间240min后降至室温;最后,将关节轴承置入烘箱,加热至170℃±5℃,保温24小时以上,随炉冷却至室温即可,如图1所示。
实施例3 一种航空关节轴承用自润滑衬垫材料,该材料由聚丙烯酸酯树脂176g、增韧剂40g、短切纤维增强剂65g、固体润滑剂70g,混合均匀制得。
具体方法如下:依次称取123g DI-TMPTA,34g TMPTMA,18g EDMA后,在真空混合机中进行均匀混合10min,加入VPBN 40g后继续混合10min,再加入0.5g BPO搅拌混合10min,进行真空抽滤,控制真空度为0.080MPa~0.085MPa,然后依次加入芳纶纤维65g,石墨粉70g,继续搅拌抽真空30min后加入0.5g DMPT,混合10min后取出即得。
该自润滑衬垫材料的应用:
首先将关节轴承的不锈钢440C内圈1和17-4PH外圈2装配预留间隙后,置入相应的模具中;然后将所得自润滑衬垫材料3装入注射胶枪中的胶管中,利用注射胶枪进行注射成型,同时控制注射压力为0.5M±0.2Pa,注射完毕后保持压力15s;其次,将模具置入密封压力容器中,充入氮气,保持气体压力为2.5MPa,加热容器至温度为80℃±5℃,保温时间240min后降至室温;最后,将关节轴承置入烘箱,加热至170℃±5℃,保温24小时以上,随炉冷却至室温即可,如图1所示。
实施例4 一种航空关节轴承用自润滑衬垫材料,该材料由聚丙烯酸酯树脂201g、增韧剂40g、短切纤维增强剂200g、固体润滑剂30g混合均匀制得。
具体方法如下:依次称取120g DI-TMPTA,60g PETA,20g EDMA后,在真空混合机中进行均匀混合10min,加入VPBN 40g后继续混合10min,再加入0.5g DCP搅拌混合10min,进行真空抽滤,控制真空度为0.080MPa~0.085MPa,然后依次加入玻璃纤维200g,聚四氟乙烯粉30g,继续搅拌抽真空30min后加入0.5g DEA,混合10min后取出即得。
该自润滑衬垫材料的应用:
首先将关节轴承的不锈钢440C内圈1和17-4PH外圈2装配预留间隙后,置入相应的模具中;然后将自润滑衬垫材料3装入注射胶枪中的胶管中,利用注射胶枪进行注射成型,同时控制注射压力为0.5M±0.2Pa,注射完毕后保持压力5s;其次,将模具置入密封压力容器中,充入氮气,保持气体压力为0.5MPa,加热容器至温度为60℃±5℃,保温时间180min后降至室温;最后,将关节轴承置入烘箱,加热至190℃±5℃,保温24小时以上,随炉冷却至室温即可,如图1所示。
上述实施例1~4中的增韧剂是指乙烯基封端的丁腈橡胶(VPBN)。
短切纤维增强剂是指玻璃纤维、碳纤维和芳纶纤维中的一种或两种,其长度为30μm~80μm。
固体润滑剂是指聚四氟乙烯、石墨、二硫化钼中的一种或两种,其粒径为10μm以下。

Claims (5)

1.一种航空关节轴承用自润滑衬垫材料,其特征在于:该材料按重量百分比计由以下组分混合均匀制得:聚丙烯酸酯树脂20%~77%、增韧剂5%~11%、短切纤维增强剂10%~70%、固体润滑剂5%~20%;所述聚丙烯酸酯树脂由丙烯酸酯单体、引发剂和促进剂组成;所述丙烯酸酯单体按重量百分比计由以下组分混合均匀制得:四官能度丙烯酸酯单体60%~80%,三官能度丙烯酸酯单体10%~30%,二官能度丙烯酸酯单体10%;所述引发剂的用量为所述丙烯酸酯单体重量的0.2%~0.7%;所述促进剂的用量为所述丙烯酸酯单体重量的0.2%~0.7%;所述四官能度丙烯酸酯单体是指2-三羟甲基丙烷四丙烯酸酯;所述三官能度丙烯酸酯单体是指三羟甲基丙烷三丙烯酸酯或季戊四醇三丙烯酸酯;所述二官能度丙烯酸酯单体是指乙二醇二甲基丙烯酸酯或乙氧化双酚A二甲基丙烯酸酯;所述引发剂是指有机过氧化物,该有机过氧化物为过氧化二苯甲酰或过氧化二异丙苯;所述促进剂是指N,N-二甲基对甲苯胺或二乙基苯胺。
2.如权利要求1所述的一种航空关节轴承用自润滑衬垫材料,其特征在于:所述增韧剂是指乙烯基封端的丁腈橡胶。
3.如权利要求1所述的一种航空关节轴承用自润滑衬垫材料,其特征在于:所述短切纤维增强剂是指玻璃纤维、碳纤维和芳纶纤维中的一种或两种,其长度为30μm~80μm。
4.如权利要求1所述的一种航空关节轴承用自润滑衬垫材料,其特征在于:所述固体润滑剂是指聚四氟乙烯、石墨、二硫化钼中的一种或两种,其粒径为10μm以下。
5.如权利要求1所述的一种航空关节轴承用自润滑衬垫材料的应用,其特征在于:首先将关节轴承的不锈钢440C内圈和17-4PH外圈装配预留间隙后,置入相应的模具中;然后将自润滑衬垫材料装入注射胶枪中的胶管中,利用注射胶枪进行注射成型,同时控制注射压力为0.5M±0.2Pa,保压时间5s~20s;其次,将模具置入压力容器中,充入氮气,保持气体压力为0.5MPa~2.5MPa,加热容器至温度为55℃~115℃,保温时间60min~240min后降至室温;最后,将关节轴承置入烘箱,加热至165℃~195℃,保温24小时以上,随炉冷却至室温即可。
CN202010776710.9A 2020-08-05 2020-08-05 一种航空关节轴承用自润滑衬垫材料及其应用 Active CN111892979B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010776710.9A CN111892979B (zh) 2020-08-05 2020-08-05 一种航空关节轴承用自润滑衬垫材料及其应用

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010776710.9A CN111892979B (zh) 2020-08-05 2020-08-05 一种航空关节轴承用自润滑衬垫材料及其应用

Publications (2)

Publication Number Publication Date
CN111892979A CN111892979A (zh) 2020-11-06
CN111892979B true CN111892979B (zh) 2021-07-20

Family

ID=73245839

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010776710.9A Active CN111892979B (zh) 2020-08-05 2020-08-05 一种航空关节轴承用自润滑衬垫材料及其应用

Country Status (1)

Country Link
CN (1) CN111892979B (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113389784B (zh) * 2021-06-30 2022-03-04 上海大学 自润滑关节轴承衬垫智能脱溶和加压装置及方法
CN115141443B (zh) * 2022-07-26 2023-04-07 中国科学院兰州化学物理研究所 一种航空滚轮轴承用自润滑材料及其应用
CN118288482B (zh) * 2024-05-27 2024-09-10 季华实验室 关节轴承用聚氨酯丙烯酸酯自润滑衬垫及其制备方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053665A (en) * 1975-08-04 1977-10-11 Kamatics Corporation Molded plastic bearing assembly
CA1075223A (en) * 1975-12-12 1980-04-08 Donald G. Needham Poly (arylene sulfide) antifriction composition
RU2586217C1 (ru) * 2012-04-26 2016-06-10 Минебеа Ко., Лтд. Отверждаемая ультрафиолетовым излучением полимерная композиция, скользящее сопряжение, и способ изготовления скользящего сопряжения
GB201509919D0 (en) * 2015-06-08 2015-07-22 Jmedtech Pte Ltd Coating
US10167439B2 (en) * 2016-06-01 2019-01-01 Minebea Mitsumi Inc. Ultraviolet curable resin composition and sliding member

Also Published As

Publication number Publication date
CN111892979A (zh) 2020-11-06

Similar Documents

Publication Publication Date Title
CN111892979B (zh) 一种航空关节轴承用自润滑衬垫材料及其应用
CN103013090A (zh) 一种聚芳醚酮复合材料及其在桥梁支座上的应用
CN100504091C (zh) 一种聚合物自润滑薄层复合轴套及其制备方法
CN100348652C (zh) 高分子自润滑复合材料及其制备方法
CN101914254B (zh) 曲轴油封用聚四氟乙烯复合材料及其制备方法
US20130108195A1 (en) Three-layer composite self-lubricating sliding bearing with modified polyimide anti-wear layer and method for manufacturing the same
CN101929506B (zh) 一种缠绕纤维增强自润滑复合轴承及其制造方法
CN109268393B (zh) 一种高承载自润滑轴套及其制备方法
CN114621545B (zh) 一种高耐磨复合材料及其制备方法和应用
CN115322570B (zh) 混杂连续纤维增强杂萘联苯聚芳醚树脂基复合材料及其制备方法
CN112268071B (zh) 一种基于纤维织物改性的自润滑轴承及其制作方法
CN111393775B (zh) 一种核主泵静压轴封用聚四氟乙烯密封材料及其制备方法
US3464845A (en) Antifriction bearings
CN102312923A (zh) 滑动轴承构件、滑动轴承和用于制造滑动轴承构件的方法
CN100482729C (zh) 晶须增强树脂基复合摩擦材料的制备方法
Cheng et al. Effect of rare earths on mechanical and tribological properties of carbon fibers reinforced PTFE composite
US6284322B1 (en) Low-friction coating composition
CN208236896U (zh) 一种用于重型卡车平衡轴的自润滑轴承
CN111911529B (zh) 一种成型模具及采用其制造高承载自润滑关节轴承的方法
CN115141443B (zh) 一种航空滚轮轴承用自润滑材料及其应用
CN114539655A (zh) 基于磷酸锆改性的uhmwpe减摩抗磨复合材料及制备方法
CN110564289B (zh) 一种增强型自润滑关节轴承衬垫材料的制备方法
CN114060404A (zh) 一种ptfe织物衬垫与干膜组合摩擦副、用途及自润滑关节轴承
CN110982201A (zh) 一种改性ptfe油封材料制备工艺
CN108504050A (zh) 一种桥梁支座用复合滑板的制备方法及摩擦副

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant