零维纳米坡缕石载Ag复合材料的制备及其表征.pdf

《零维纳米坡缕石载Ag复合材料的制备及其表征.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、第33卷第l期非金属矿Vo1．33No．12010年1月Non—MetallicMinesJanuary，2O10零维纳米坡缕石载Ag复合材料的制备及其表征李屹周元康杨绿朱湘宁张勇杰(贵州大学机械工程学院，贵州贵阳550003)摘要坡缕石／Ag纳米复合材料制备过程中，坡缕石零维纳米粒子各方向尺寸均在纳米级之内，与天然纤维状的一雏纳米坡缕石相比极易团聚而导致载Ag能力较差．提高其载Ag能力即提高纳米Ag比分是亟需解决的问题。本实验针对用于润滑油添加剂的零维纳米坡缕石栽Ag复合材料的制备方法进行了研究，对比了不同反应时间对Ag纳米还原生

2、成的影响，探索用含-NH2的硅炕偶联剂同时作为抑制剂和分散剂作用于坡缕石和Ag纳米粒子，获得零维纳米坡缕石栽Ag量较高的材料制备方法和较佳的工艺参数。通过TEM表征分析，使用适量的KH550偶联剂调节，在70~C条件下反应时间为30min可以获得材料中较高的Ag纳米含量，制备出的纳米坡缕石载Ag复合材料颗粒粒径分布均匀，团聚少，并且纳米Ag均匀附着在坡缕石颗粒上。关键词零维纳米坡缕石裁银能力润滑添加剂中图分类号：TB333文献标识码：A文章编号：1000．8098(2010)01．0070．03PreparationandChara

3、cterizationofZero-dimensionalNano—palygorskiteCarryingAgCompositeLiYiZhouYuankangYangLvZhuXiangningZhangYongjie(CollegeofMechanicalEngineering，GuizhouUniversity,Guiyang550003)AbstractDuringthepreparationofpalygorskite／Agnano—compositematerial，thepalygorskitezero—dimens

4、ionalnano—particleiseasiertoagglomeratethanthenaturalfabricone—dimensionalnano—palygorskite．Asaresult，thezero—demensionalnano—palygorskitehaspoorcapabilityofcarryingAg．ImprovingthecarryingAgcapability,namelyincreasingtheproportionofnano—Aginthecomposite，isanurgentprobl

5、em．Inthisexperiment，thepreparationmethodofzero—demensionalnano-palygorsiktecarryingAgcompositeappliedonlubricationadditivewasinvestigated．Theefectofdiferentreducingreactiontimeofformationnano-Agwasdiscussed．Silicanecouplingagentcontained-NH2wasemployedasinhibitoranddis

6、persant，whichactedonnano·palygorskiteandnano—Aggranuleforincreasingtheproportionofnano—Aginthecomposite．Andthepreparationmethodandtechnologicalparameterswereobtained．TheresultsofTEMcharacterizationshowedthatwhenthereactiontimewas30minutes，reactiontemperaturewas70~C，the

7、proportionofcarryingAginzero—demensionalnano-palygorsiktewasincreasedbyusingproperKH550couplingagent．Thenano-palygorsiktecarryingAgcompositegranulepreparedhasuniformdistributionofparticlesize，andislessagglomerated．Moreover,thesenano—Aggranulesareaaachedevenlyonthenano—

8、palygorsikteKeywordszero·-dimensionalnano—palygorskitecapabilityofcarryingAglubricationadditive坡缕石是一种层链状含羟基的镁铝硅酸盐矿物。／