复配偶联剂用于粉煤灰表面改性
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摘要
为改善粉煤灰与高分子材料间的相容性及分散稳定性,采用复配偶联剂对其进行表面接枝改性处理。采用FTIR、XRD、激光粒度仪、zeta电位仪、SEM和接触角等测试手段分别对粉煤灰改性前后的结构、形貌和表面性能变化进行测试表征。结果表明,球磨后粉煤灰粒径下降,表面生成大量带负电荷位点,zeta电位下降至-40.66 mV;亲水性表面修饰后,偶联剂在粉煤灰表面形成完整包覆层,亲水接触角增至61.46°,达到良好的表面改性效果。
In order to improve the compatibility and dispersion stability between fly ash and polymer materials, the surface graft modification treatment was carried out by using a compound coupling agent. The structure, morphology and surface properties of fly ash before and after modification were tested by FTIR, XRD, laser particle size analyzer, zeta potential meter, SEM and contact angle. The results show that the particle size of fly ash decreases after ball milling, and a large number of negatively charged sites are formed on the surface. The zeta potential drops to-40.66 mV. After hydrophilic surface modification, the coupling agent forms a complete coating on the surface of fly ash. The hydrophilic contact angle is increased to 61.46° to achieve a good surface modification effect.
In order to improve the compatibility and dispersion stability between fly ash and polymer materials, the surface graft modification treatment was carried out by using a compound coupling agent. The structure, morphology and surface properties of fly ash before and after modification were tested by FTIR, XRD, laser particle size analyzer, zeta potential meter, SEM and contact angle. The results show that the particle size of fly ash decreases after ball milling, and a large number of negatively charged sites are formed on the surface. The zeta potential drops to-40.66 mV. After hydrophilic surface modification, the coupling agent forms a complete coating on the surface of fly ash. The hydrophilic contact angle is increased to 61.46° to achieve a good surface modification effect.
引文
[1]HE Y,LUO Q,HU H.Situation Analysis and Countermeasures of China’s Fly Ash Pollution Prevention and Control[J].Procedia Environmental Sciences,2012 16:690-696.
[2]李彩霞,刘健,任瑞晨.粉煤灰特性及作橡胶补强填料研究[J].非金属矿,2012,35(4):47-48.
[3]晋新亮,彭同江,孙红娟.硫酸铵焙烧法提取粉煤灰中氧化铝的工艺技术研究[J].非金属矿,2013,36(2):59-63.
[4]李永靖,黄琦,岳玮琦,等.聚合物改性煤矸石粉煤灰混凝土性能研究[J].非金属矿,2017,40(2):35-37.
[5]刘俊红,黄勇,陈善勇.粉煤灰在橡塑复合材料中的应用[J].化工技术与开发,2012,41(4):36-38.
[6]秦露露.脂肪酸的表面性能及其在无机填料表面改性的应用研究[D].西安:西北大学,2014.
[7]Ramesan M T.Processing characteristics and mechanical and electrical properties of chlorinated styrene-butadiene rubber/fly ash composites[J].Journal of Thermoplastic Composite Materials,2015,28(9):1286-1300.
[8]李建强,汪本高.硅烷偶联剂KH570对石英砂的表面改性工艺研究[J].非金属矿,2013,36(2):26-29.
[9]高美玲,谭鹏程,金石,等.粉煤灰表面设计改性及功能化研究进展[J].再生资源与循环经济,2018,11(3):37-39.
[10]肖翠微.粉煤灰在水处理领域的应用进展[J].洁净煤技术,2016,22(4):45-51.
[11]薛彩红,聂金合,高莉,等.粉煤灰基地聚合物的制备及性能研究[J].非金属矿,2016,39(2):5-7.
[12]胡红英,胡慧萍,陈启元.非水环境中球磨作用对改性Si O2晶体结构、粒度和Zeta电位的影响[J].过程工程学报,2007,7(4):827-831.
[13]赵计辉,王栋民,王学光,等.改性三乙醇胺助磨剂对粉煤灰水泥的助磨性能[J].非金属矿,2015(1):25-28.
[14]张云怀.粉煤灰微珠/有机高分子复合材料及其偶联剂界面作用的研究[D].重庆:重庆大学,2004.
[2]李彩霞,刘健,任瑞晨.粉煤灰特性及作橡胶补强填料研究[J].非金属矿,2012,35(4):47-48.
[3]晋新亮,彭同江,孙红娟.硫酸铵焙烧法提取粉煤灰中氧化铝的工艺技术研究[J].非金属矿,2013,36(2):59-63.
[4]李永靖,黄琦,岳玮琦,等.聚合物改性煤矸石粉煤灰混凝土性能研究[J].非金属矿,2017,40(2):35-37.
[5]刘俊红,黄勇,陈善勇.粉煤灰在橡塑复合材料中的应用[J].化工技术与开发,2012,41(4):36-38.
[6]秦露露.脂肪酸的表面性能及其在无机填料表面改性的应用研究[D].西安:西北大学,2014.
[7]Ramesan M T.Processing characteristics and mechanical and electrical properties of chlorinated styrene-butadiene rubber/fly ash composites[J].Journal of Thermoplastic Composite Materials,2015,28(9):1286-1300.
[8]李建强,汪本高.硅烷偶联剂KH570对石英砂的表面改性工艺研究[J].非金属矿,2013,36(2):26-29.
[9]高美玲,谭鹏程,金石,等.粉煤灰表面设计改性及功能化研究进展[J].再生资源与循环经济,2018,11(3):37-39.
[10]肖翠微.粉煤灰在水处理领域的应用进展[J].洁净煤技术,2016,22(4):45-51.
[11]薛彩红,聂金合,高莉,等.粉煤灰基地聚合物的制备及性能研究[J].非金属矿,2016,39(2):5-7.
[12]胡红英,胡慧萍,陈启元.非水环境中球磨作用对改性Si O2晶体结构、粒度和Zeta电位的影响[J].过程工程学报,2007,7(4):827-831.
[13]赵计辉,王栋民,王学光,等.改性三乙醇胺助磨剂对粉煤灰水泥的助磨性能[J].非金属矿,2015(1):25-28.
[14]张云怀.粉煤灰微珠/有机高分子复合材料及其偶联剂界面作用的研究[D].重庆:重庆大学,2004.