蒙脱土改性聚甲基丙烯酸甲酯复合材料的硫酸腐蚀行为
CORROSION BEHAVIOR OF POLY (METHYL METHACRYLATE)/MONTMORILLONITE COMPOSITE IN SULFURIC ACID
摘 要
对乳液聚合法制备出的聚甲基丙烯酸甲酯/蒙脱土(PMMA/MMT)复合材料在硫酸介质中的腐蚀情况进行了研究,探讨了蒙脱土含量、硫酸浓度以及腐蚀时间对腐蚀速率的影响.结果表明,硫酸浓度较低且腐蚀时间较短时,含有2%~3%蒙脱土的复合材料的腐蚀速率比PMMA明显降低；PMMA及其复合材料的腐蚀速率随腐蚀时间的延长而下降,随硫酸浓度的增加而上升；硫酸浓度越高或腐蚀时间越长,复合材料中蒙脱土的片层阻隔作用越不明显.
腐蚀速率
聚甲基丙烯酸甲酯
蒙脱土
复合材料
Sulfuric acid
Corrosion rate
Poly(methyl methacrylate)
Montmorillonite
Composite
Abstract
The effects of concentration and corrosion time of sulfuric acid and content of montmorillonite on the corrosion rates of poly(methyl methacrylate) (PMMA) and poly(methyl methacrylate)/montmorillonite composite,prepared by emulsion polymerization,in sulfuric acid were studied using weight loss testing method.The corrosion rate of the composite containing 2%~3% montmorillonite was lower obviously than that of pure PMMA when the concentration of sulfuric acid was low and time of corrosion was short,the corrosion rates of both PMMA and its composite decreased with the increasing of corrosion time,while increased with the increasing of the concentration of sulfuric acid.The longer the corrosion time or the higher the concentration of sulfuric acid,the weaker the barrier ability of montmorillonite layer in the composite.
中图分类号 TB337 TQ050.4+4
所属栏目 试验研究
基金项目
收稿日期 2006/5/25
修改稿日期
网络出版日期
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引用该论文: CHEN Kui,YANG Rui-cheng,ZHANG Tian-yun,YANG Jing. CORROSION BEHAVIOR OF POLY (METHYL METHACRYLATE)/MONTMORILLONITE COMPOSITE IN SULFURIC ACID[J]. Corrosion & Protection, 2007, 28(4): 205～207
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参考文献
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【2】包丽萍,杨延钊,韦学臣,等.PMMA/蒙脱土纳米复合材料的制备及其阻燃性能[J].青岛科技大学学报,2003,24(4):351-353.
【3】Zou Gang,Fang Kun,He Pingsheng.Study on bulk intercalation polymerization of PMMA/montmorillonite intercalated nanocomposite by dynamic torsional vibration method[J].Journal of Materials Science Letters,2002,21:761-763.
【4】Panchatapa Jash,Charles A Wilkie.Effects of surfactants on the thermal and fire properties of poly(methyl methacrylate)/clay nanocomposites[J].Polymer Degradation and Stability,2005,88:401-406.
【5】Zhang Wei’an,Shen Xiaofeng,Li Yuan,et al.Synthesis and characterization of poly(methyl methacrylate)/OMMT nanocomposites by γ-ray irradiation polymerization[J].Radiation Physics and Chemistry,2003,67:651-656.
【6】Xu Yijin,William J Brittain,Xue Chenchen,et al.Effect of clay type on morphology and thermal stability of PMMA–clay nanocomposites prepared by heterocoagulation method[J].Polymer,2004,45:3735-3746.
【7】陈奎,杨瑞成,吴明亮,等.聚合物/蒙脱土剥离型纳米复合材料逾渗理论分析[J].兰州理工大学学报,2006,32(1):41-45.
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