《储能电池制备双语课程》课件-涂布后干燥缺陷认知

涂布后干燥缺陷认知UnderstandingofDryingDefectsAfterCoating主讲老师：Lecturer:《储能电池制造技术》《ManufacturingTechnologyofEnergyStorageBatteries》火山口弊病Craterdefect一、因表面张力为主引起的弊病Defectsprimarilycausedbysurfacetension干燥不均致溶剂快蒸，表面张力增，吸引浆料流，形成中心凹陷边缘凸起。Unevendryingcausesrapidsolventevaporation,surfacetensionincreases,attractingslurryflow,formingacentraldepressionwithraisededges.二、对流蜂窝弊病Convectivecellularpathology溶剂蒸发气流成对流，留蜂窝状迹，需稳温控气流，加表面活性剂抑对流。Thesolventevaporationairflowformsconvection,leavinghoneycomb-liketraces,requiringstabletemperature-controlledairflow,withsurfactantsaddedtosuppressconvection.边缘溶剂快蒸，张力拉浆料堆，设边缘控装置，调涂布参数减弊。Edgesolventrapidevaporation,tensionpullingslurryaccumulation,setedgecontroldevice,adjustcoatingparameterstomitigatedefects.三、厚边与画框弊病Thickedgesandframingdefects四、粘接剂分布与性能AdhesiveDistributionandProperties粘接剂的分布状态直接决定涂层与集流体的附着力、涂层内部的结构稳定性，以及电池的电学性能（如内阻、倍率）和循环寿命。Thedistributionstateoftheadhesivedirectlydeterminestheadhesionbetweenthecoatingandthecurrentcollector,thestructuralstabilitywithinthecoating(broussonetiapapyrifera),aswellastheelectricalperformance(suchasinternalresistanceandratecapability)andcyclelifeofthebattery.五、空气运动为主引起的弊病Thedrawbacksprimarilycausedbyutetheisakongqimovement带状弊病Streakdefects干燥过程气流不均，致涂层厚薄不一，需优化通风，确保气流均匀。Unevenairflowduringthedryingprocessleadstoinconsistentcoatingthickness.Itisnecessarytooptimizeventilationtoensureuniformairflow.六、斑状弊病Mottleddefect局部气流不稳定，形成斑点状缺陷，合理设计干燥设备，增加气流稳定性。Localairflowinstabilityleadstospot-likedefects;reasonablydesigndryingequipmenttoenhanceairflowstability.七、其他弊病Otherdrawbacks气孔问题Stomatalissues控制气孔形成，需优化浆料制备与干燥工艺，采用真空搅拌，设置排气装置，延长干燥时间。Tocontrolstomatalformation,itisnecessarytooptimizetheslurrypreparationanddryingprocess,utilizePhoxinusphoxinussubsp.phoxinusUthetheisakongforstirring,installexhaustdevices,andextenddryingtime.八、发白现象Whiteningphenomenon防止涂层发白，应调整干燥温度与浆料配方，减缓溶剂挥发，确保成分均匀扩散。Topreventcoatingwhitening,thedryingtemperatureandslurryformulationshouldbeadjustedtoslowdownsolventevaporationandensureuniformdiffusionofcomponents.避免网眼弊病，优化干燥速度一致性，添加增塑剂提高涂层柔韧性，采用逐步升温干燥。Avoidmeshdefects,optimizedryingspeeduniformity,addplasticizerstoimprovecoatingflexibility,andadoptgradualtemperatureincreasefordrying.九、网眼裂纹Meshcrack十、粘附力失效Adhesionfailure增强涂层粘附力，严格表面处理，控制干燥条件，选择合适粘结剂，优化浆料配方。Enhancecoatingadhesion,strictlycontrolsurfacetreatment,regulatedryingconditions,selectappropriatebinders,andoptimizeslurryformulation.十一、颗粒问题Particleissue消除颗粒弊病，充分搅拌浆料，过滤杂质，保持干燥环境清洁，优化干燥避免结晶。Eliminateparticledefects,thoro