废胶粉滑石粉改性PA66／GF复合材料的制备与性能.doc

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1、废胶粉、滑石粉改性PA66／GF复合材料的制备与性能徐久升摘要：采用硅烷偶联剂KH560表面改性废胶粉(WRP)、环氧树脂E44改性滑石粉(Talc)，以尼龙(PA)66／玻璃纤维(GF)复合材料为基体，制备了WRP，Talc及两者协同改性的PA66／GF复合材料，研究了WRP，Talc及两者协同作用对复合材料力学性能、结晶性能和热稳定性能的影响。结果表明，当3份WRP经过1份KH560处理后，其与PA66／GF基体间的界面粘结性明显得到改善，其改性的复合材料弯曲强度和冲击强度最高，分别比PA66／GF基体提高了11.09%和2.05%。当1份Talc经过3份E44

2、处理后，其在基体中具有良好的分散性，改性的复合材料弯曲强度和冲击强度达到最大，分别比基体材料提高了13.89%和8.42%。WRP与Talc均能促进复合材料的结晶，但两者协同作用对复合材料结晶性能没有明显的影响。采用1份KH560处理的3份WRP协同3份E44处理的1份Talc对复合材料进行改性，可使弯曲强度和冲击强度相比基体分别提高16.97%和6.25%，且使复合材料具有良好的热稳定性能，达到了低成本WRP和Talc改性制备高性能橡塑复合材料的目的。关键词：玻纤增强尼龙66；废胶粉；滑石粉；复合材料；力学性能PreparationandPropertiesofP

3、A66／GFCompositesModifiedwithWasteRubberPowderandTalcumPowderXuJiushengAbstract：Wasterubberpowder(WRP)treatedbysilanecouplingagentKH560andtalcumpowder(Talc)treatedbyepoxyresinE44werecombinedwithglassfiberreinforcednylon66(PA66／GF)asmatrixforpreparingPA66／GFcompositesmodifiedbyWRPorTalco

4、rWRPandTalccooperatively.TheeffectsofWRP，Talcandtheircooperativeeffectsonthemechanicalproperties，crystallizationandthermalperformancesofthecompositeswereresearchedbySEM，XRDandTGetc..Theresultsshowthatwhen3phrWRPistreatedby1phr(KH560，theinterfacialadhesionofWRPandPA66／GFisobviouslyimpro

5、ved，theflexuralstrengthandimpactstrengthofthecompositemodifiedbyWRPreachmaximumandincreasesby11.09%and2.05%respectivelycomparedwiththematrix.When1phrTalcistreatedby3phrE44，TalciswelldispersedinPA66／GFandtheflexuralstrengthandimpactstrengthofthecompositemodifiedbyTalcreachmaximumandincr

6、easesby13.89%and8.42%respectivelycomparedwiththematrix.WRPandTalccanpromotecrystallizationofthecomposites，butthecrystallizationofPA66／GFmodifiedviaWRPandTalccooperativelyisn'tsignificantlychanged.WhenPA66／GFmodifiedby3phrWRPtreatedby1phrKH560and1phrTalctreatedby3phrE44，theflexuralstren

7、gthandimpactstrengthofthecompositeincreasesby16.97%and6.25%respectivelycomparedwiththematrixandthecompositehasgoodthermalstability，whichachievesthepurposeofpreparinghighperformancerubber-plasticcompositeswithlow-costWRPandTalc.Keywords：glassfiberreinforcednylon66；wasterubberpowder；ta