疏水型pa6sio2有机无机杂化材料的研究

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1、*类{』壁竺兰自‰：——单位代码—业堑L仑肥工学大警HefeiUniversityofTechnology硕士学位论文MASTERDISSERTATl0N@论文题目：疏水型PA6／SiO：有机无机杂化材科的研究学位类别：学科专业：(工程领域作者姓名：导师姓名：完成时间：学历硕士应用化学周星星王华林教授2007年6月疏水型PA6／Si02有机无机杂化材料的研究摘要以正硅酸乙酯(TEOS)、甲基三乙氧基硅烷(MTES)和己内酰胺(CPL)为原料，用阴离子原位聚合法制备了疏水型PA6／Si02有机无机杂化材料。利用FTIR、XRD、DSC和XPS等手段对疏

2、水材科进行表征和分析，并对杂化材料的力学性能进行了相关测试；研究了杂化材料疏水机理；探索了不同Si02含量的硅溶胶对材料疏水性能、结晶行为和力学性能的影响。结果表明：PA6／Si02有机无机杂化材表面面外的Si．CH3基团赋予了材料优异的疏水性能；采用本实验方法制备出的PA6和疏水型PA6／Si02有机无机杂化材均为a晶型；PA6／Si02有机无机杂化材的熔点略高于PA6；疏水型PA6／Si02有机无机杂化材料的拉伸强度、弯曲强度和冲击强度都有一定程度的提高。关键词：原位聚合；疏水型；PA6／Si02；有机无机杂化材料4Studyonhydropho

3、bicpolyamide6(PA6)／Si02organic—-inorganichybridmaterialAbstractTetraethoxysilane(TEOS)，methyltriethoxysilane(MTES)andcaporlactam(CPL)wereusedtosynthesizehydrophobicpolyamide6(PA6)／Si02organic-inorganichybridmaterialbyin·-situandanionicring-openingpolymerizationmethod．FourierTra

4、nsformInfraredSpectroscopy(FTIR)spectra，X-raydiffractionanalysis(xRD)，Differentialscanningcalorimetry(DSC)，x-rayphotoelectronspectroscopy(XPS)werecarriedouttocharacterizeandanalyzehydrophobicmaterials．ThemechanicalpropertiesofPA6／Si02hybridmaterialsweretested．Thehydrophobicmech

5、anismofPA6／Si02hybridmaterialswereinvestigated．Moreover,theeffectsofmechanicalproperties、hydrophobicpropertiesandcrystallizationbehaviorswithdifferentSi02wt％ofsilicasolwerealsoexplored．Theresultsindicatedthattheoutstretchedsi—methylgroupsonthesurfaceofPA6／S102hybridmaterialcont

6、ributedtohydrophobicity．ThePA6andthehydrophobicPA6／Si02hybridmaterialssynthesizedinthispaperwerebothofacrystalform，themeltingpointofPA6／Si02hybridmaterialwasslightlyhigherthanthatofPA6．Tensilestrength、bendingstrengthandimpactstrengthofPA6／Si02hybridmaterialwereslightlyenhancert

7、hanthatofPA6．Keywords：In-situpolymerization；Hydrophobic；Polyamide6(PA6)／Si02；Organic-inorganichybridmaterial5插图清单图2．1实验装置简图⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯12图2．2工艺流程简图⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯13图2．3PA6／Si02杂化材料的疏水效果图⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯15图2．4PA6／Si02杂化材料的接触角与Si02的含量关系

8、圈⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯16图2．5疏水型PA6／Si02杂化反应体系黏度的变化曲线⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯