5-白炭黑轮胎胎面胶的加工.ppt

ProcessingofSilicaTreadCompounds白炭黑轮胎胎面胶的加工,Dr.LotharSteger/范汝良RheinChemieRheinauGmbH莱茵化学（青岛）有限公司,06.06.2020,Steger-SilicaTreadI,Folie:2,Whysilicacompounds?为何要用白炭黑胎面？,Byapplyingsilicainsteadofcarbonblackintiretreadcompoundsthefollowingresultscanbeachieved:用白炭黑代替炭黑具有如下优越性能：muchlowerrollingresistanceofthetire轮胎滚动损失降低很多muchbettericeandsnowperformance抗冰滑和抗雪滑行能优越很多muchbetterwetskidbehaviour抗湿滑性能改善很多atsimilartreadwearpatterns具有相近的耐磨性,ABS-brakeworksonlywithsilicaonthewetroad,06.06.2020,Steger-SilicaTreadI,Folie:3,PropertiesofSilicawithrespecttoCarbonBlack白炭黑与炭黑的性能对比,抗湿滑,抗雪/冰滑,滚动阻力,耐磨性,06.06.2020,Steger-SilicaTreadI,Folie:4,Historyofsilicatechnology白炭黑技术发展简史,1974BluesilicatiredeveloppedbyMetzeler/GermanyHighloadingofsilicaandBR,noS-SBRavailable,insufficientprocessingequipmentandknowhow1975Metzlerstoppedproductionofbluetire1980-severaldevelopments:silanes,rubbers,1990processingequipmentandprocessingknowhow1992PatentonGreenTireofMichelin/FranceS-SBR,lesssilicaandBR,improvedprocessingequipmentandprocedures2000Stateoftheartsilicatireachievesupto30%improvementofphysicalpropertiesbuthasremarkableprocessingdeficiencies,06.06.2020,Steger-SilicaTreadI,Folie:5,0,25,50,75,100,125,Abrasion耐磨性,Grip抓着力,Rollingresistance滚动阻力,Europa,GlobalTireRequirements全球轮胎性能要求,欧洲,日本,美国,06.06.2020,Steger-SilicaTreadI,Folie:6,RequirementsMadeonPassengerCarTiresinEurope,theUSA,andAsia不同地区对承用胎的要求模式,Source:BMW,Michelin,Goodyear,Continental,06.06.2020,Steger-SilicaTreadI,Folie:7,Contents内容,Whyissilicaincreasinglybeingusedintireapplication?为何白炭黑在轮胎上的应用不断增加？Bywhatmeansdosilicacompoundsdifferfromcarbonblackcompoundsinthemillroom?在混炼车间借助什么工具区别白炭黑与炭黑,06.06.2020,Steger-SilicaTreadI,Folie:8,DifferentTreadConcepts不同胎面概念,06.06.2020,Steger-SilicaTreadI,Folie:9,Rubbers(S-SBR)溶聚丁苯橡胶100phrSilica(HDSi)高分散白炭黑70phrSilane硅烷偶联剂6phrProcessoil操作油10phrProcessingPromoter加工助剂5phrStearicacid硬脂酸2phrZinkoxide氧化锌3phrCuringsystem硫化体系5phrAntioxydants抗氧剂6phrSilicareplacescarbonblackcompletely.白炭黑几乎完全取代炭黑SilaneactsasacouplingagentbetweensilicaandS-SBR.硅烷作为白炭黑和溶聚丁苯橡胶的偶联剂,BasicSilicaCompound白炭黑胎面胶基本组成,06.06.2020,Steger-SilicaTreadI,Folie:10,Styrene%,40,10,30,0,20,Vinyl%,0,30,20,10,50,40,-70C,-60C,-50C,-40C,-30C,-20C,-10C,0C,+10C,VSL2540-1HM,VSL5025-1HM,VSL5025-1,VSL5525-1,SL23,5-0,VSL5025-0HM,50,SL23,5-1,SL18-0,VSL2525-0M,LanxessS-SBRRange朗盛化学溶聚丁苯橡胶,06.06.2020,Steger-SilicaTreadI,Folie:11,S-SBRTypeswithdifferentmolecularweight不同分子量的S-SBR,加工性,拉伸强度,硬度,撕裂强度,耐磨性,06.06.2020,Steger-SilicaTreadI,Folie:12,100,Index,0100,phrBRphrS-SBR,110,120,130,140,150,90,1090,2080,3070,4060,Wear耐磨性,tandelta60C,wetgrip湿抓着性,Passengertiretread,greentire承用胎面绿色轮胎-S-SBR/highcisBR用溶聚丁苯/顺丁橡胶BR并用,InfluenceofBRinsilicacompounds顺丁橡胶在白炭黑胶料中的作用,06.06.2020,Steger-SilicaTreadI,Folie:13,Typicalvalues典型指标:,CAS-RN112926-00-8,Ultrasil7000HD-Silica/Degussa德固萨高分散白炭黑,06.06.2020,Steger-SilicaTreadI,Folie:14,ProcessingPromoterforSilicaTreadCompounds用于白炭黑胎面胶的加工助剂,AktiplastST,AktiplastGT,AfluxGE1837,06.06.2020,Steger-SilicaTreadI,Folie:15,AdvantagesofProcessingpromotersinS-SBR/silica白炭黑分散助剂用于白炭黑胶料的优点,Reducedcompoundviscosities降低混炼胶粘度Improvedflowpropertiesinextrusion改善挤出流动性Improvedflowpropertiesinmolding改善模压流动性Anti-stickyeffect具有防粘效果Improvedfillerdispersion.改善填料分散Lowerenergyuseinextrusionandcalandering降低挤出压延能耗,Optimizedcompoundprocessingwithoutnegativeeffectonproductperformance,06.06.2020,Steger-SilicaTreadI,Folie:16,ConsiderationsWhenUsingSilica/SilaneTechnology白炭黑/硅烷技术应用原理,1.Moremixingisneededinnon-productivestepscomparedtoallcarbonblackcompounds需要更多的混炼段数2.TemperaturecontrolisimportantDontbetoohighortoolow混炼温度既不能太高也不能太低3.TESPT(Si-69)havealimitof160ofprocessingSi-69混炼温度不得超过1604.TESPD(Si-75)enablebetterprocessingqualityandspeedSi-75混炼温度不得超过170SlightlymorecoverageforthesameweightofsilaneHigherprocessingtemperaturesarepossible,typicallyupto170,sosilanizationreactionreachesmorecompletionsoonerItispossibletoimprovemixingtimesby25to50%,06.06.2020,Steger-SilicaTreadI,Folie:17,HydrophylSilica吸水性白炭黑desiredforagoodsilicadispersion需要良好的白炭黑分散Highlyreinforcing:高补强性-Yieldstress产生屈服应力Veryhighviscosity很高粘度Littleextrudateshrinkage很小的挤出收缩,HydrophobeSilica憎水性白炭黑Hydrophobationistheresultofthefirstcouplingreactionbetweensilicaandsilane憎水是白炭黑与硅烷偶联反应的结果Notreinforcing:noYieldstress无补强性，无屈服应力Lowviscosity低粘度Extremeextrudateshinkage/highextrudateswell高挤出胀大,白炭黑品种与特性,06.06.2020,Steger-SilicaTreadI,Folie:18,Thechemicalreactionbetweensilicaandrubber白炭黑与橡胶之间的化学反应,06.06.2020,Steger-SilicaTreadI,Folie:19,Mooneyviscosity门尼粘度Dynamics动态性能Glittleamplitude小振幅弹性模量Gbigamplitude大振幅弹性模量“Payne”-effectPayne效应Silica-dispersion白炭黑分散Silanisationgradehigh=MooneyandGlow.硅烷化反应程度越高=门尼粘度和弹性模量越低,Testofsilanisationgrade硅烷化反应程度的测定,06.06.2020,Steger-SilicaTreadI,Folie:20,Descriptionofthedispersionprocessduringmixing混炼期间的白炭黑分散Descriptionofthesilanisationprocess硅烷化反应过程Establishmentofanyinteractionbetweendispersionandsilanisation白炭黑分散和硅烷化反应之间的相互作用Determiningthemostimportantprocessparameters测定最重要的加工参数,Mixingofsilicacompounds白炭黑胶料的混炼,06.06.2020,Steger-SilicaTreadI,Folie:21,degreeofdispersionisachievedinanearlymixingstage在前段混炼中已经获得优良的分散度degreeofdispersiondeterminatesfinaldegreeofsilanisation分散度确定了最终的硅烷化反应程度Longermixingtimesyieldhigherdegreeofsilanisation较长的混炼时间可获得较高的硅烷化反应程度Highermixingtemperaturesyieldhigherdegreeofsilanisation较高的混炼温度可获得较高的硅烷化反应程度HoweveratT150scorchisvisible但是，温度高于150时容易焦烧Silanejustslightlyactsasadispergator硅烷偶联剂起到轻微的分散作用,Mixingofsilicacompounds白炭黑胶料的混炼,06.06.2020,Steger-SilicaTreadI,Folie:22,二硫代磷酸盐应用于白炭黑填充橡胶的优点,二硫代磷酸盐适合取代次磺酰胺/DPG体系它们与次