预览加载中，请您耐心等待几秒...

含硅丙烯酸酯改性水性聚氨酯乳液的制备及性能研究.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

含硅丙烯酸酯改性水性聚氨酯乳液的制备及性能研究 Title:PreparationandPerformanceCharacterizationofSilicone-modifiedWaterbornePolyurethaneEmulsion Abstract: Thisresearchaimstoinvestigatethepreparationandperformancecharacterizationofasilicone-modifiedwaterbornepolyurethane(WPU)emulsion.Thesynthesisoftheemulsionwascarriedoutviaatwo-steppolymerizationprocess,combiningthebasepolyolcomponents,isocyanates,andasilicone-containingmonomer.Theresultingemulsionwascharacterizedintermsofitsphysical,chemical,andmechanicalproperties.Thefindingsrevealedthattheincorporationofsiliconeimprovedthestability,waterandabrasionresistance,andfilm-formingpropertiesoftheWPUemulsion.Theresultswillcontributetothedevelopmentandapplicationofsilicone-modifiedWPUemulsionsinvariousindustries. Introduction: Waterbornepolyurethane(WPU)emulsionshavegainedsignificantattentionfortheirexcellentproperties,suchasgoodadhesion,environmentalfriendliness,andeaseofapplication.However,tofurtherimprovetheirperformance,itisimportanttointroducemodifiersthatenhancespecificcharacteristics.Silicone-basedadditiveshavebeenwidelyusedtoimprovethewaterresistance,weatherability,andmechanicalpropertiesofpolymericmaterials.Inthisstudy,weaimedtoprepareasilicone-modifiedWPUemulsionandinvestigateitspropertiesforpotentialapplications. Methods: 1.Synthesisofbasepolyol:Amixtureofdiolsandtriolswerereactedwithasuitablediisocyanatetoobtainthebasepolyol. 2.Preparationofsilicone-containingmonomer:Asilanecouplingagentwasreactedwithanunsaturatedmonomertoproducethesilicone-containingmonomer. 3.Two-steppolymerization:Thebasepolyol,isocyanates,andsilicone-containingmonomerweremixedinaspecificratioandheatedtoinitiatethepolymerizationprocess.Thereactionwascarriedoutintwosteps–pre-polymerizationandchainextension–toobtainthedesiredsilicone-modifiedWPUemulsion. 4.Characterization:TheresultingemulsionwascharacterizedusingvarioustechniquesincludingFourier-transforminfraredspectroscopy(FTIR),dynamicmechanicalanalysis(DMA),contactanglemeasurement,andscanningelectronmicroscopy(S