| 引用本文： |
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阮恒,黄尚顺,桑艳霞,龚福忠.碳酸镁晶须的反向沉淀法制备及其阻燃性能[J].广西科学,2016,23(3):255-260. [点击复制]
- RUAN Heng,HUANG Shangshun,SANG Yanxia,GONG Fuzhong.Synthesis of Magnesium Carbonate Whisker by Reverse Precipitation Method and Its Flame Retardant Property[J].Guangxi Sciences,2016,23(3):255-260. [点击复制]
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| 摘要: |
| [目的]制备碳酸镁晶须并研究其作为填充物时对复合材料阻燃和力学性能的影响。[方法]以镁盐和碳酸钠为原料,采用反向沉淀法制备碳酸镁晶须,并考察镁盐(MgSO4·7H2O、Mg (NO3)2·6H2O、MgCl2·6H2O等)、反应时间、滴液速度、表面活性剂[十二烷基硫酸钠(SDS)、十六烷基三甲基溴化铵(CTAB)、壬基酚聚氧乙烯醚(OP-10)]等因素对碳酸镁晶须形貌的影响;同时研究经钛酸酯偶联剂NDZ-311改性后的碳酸镁晶须对高密度聚乙烯(HDPE)材料的阻燃性能和力学性能的影响。[结果]所制备的碳酸镁晶须形貌为棒状,以MgSO4·7H2O与Na2CO3反应30 min,硫酸镁溶液滴加速率为3.5 mL·min-1时所制备的碳酸镁晶须长径比最大;表面活性剂可显著提高其长径比。经钛酸酯偶联剂NDZ-311改性后的碳酸镁晶须可明显提高HDPE的阻燃性能和拉伸强度,当其添加量为高密度聚乙烯的40wt%时,复合材料的拉伸强度提高一倍。[结论]采用反向沉淀法可制备棒状碳酸镁晶须,该晶须对HDPE具有良好的阻燃和增强性能。 |
| 关键词: 碳酸镁晶须 反向沉淀法 表面改性 阻燃性能 |
| DOI：10.13656/j.cnki.gxkx.20160620.002 |
| 投稿时间：2016-05-25修订日期：2016-06-15 |
| 基金项目:广西石化资源加工及过程强化技术重点实验室主任课题基金项目(2011Z002)资助。 |
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| Synthesis of Magnesium Carbonate Whisker by Reverse Precipitation Method and Its Flame Retardant Property |
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RUAN Heng1, HUANG Shangshun1, SANG Yanxia2, GONG Fuzhong2
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| (1.Guangxi Research Institute of Chemical Industry, Nanning, Guangxi, 530001, China;2.College of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi, 530004, China) |
| Abstract: |
| [Objective] Magnesium carbonate whisker was prepared,and its influence on the flame retardant and reinforcement properties of composite materials were studied when it is used as a filler.[Methods] The magnesium carbonate whisker was synthesized by reverse precipitation method,and the raw materials was magnesium salt and Na2CO3.The effects of some factors on the morphology of magnesium carbonate whisker were studied,including the variety of magnesium salts (MgSO4·7H2O,Mg(NO3)2·6H2O and MgCl2·6H2O),reaction time,dropping speed and surfactants[sodium dodecyl sulfate (SDS),cetyl trimethyl ammonium bromide (CTAB),nonylphenol polyoxyethylene ether (OP-10)].Meanwhile,the flame retardant and mechanical properties of HDPE,which was filled with the magnesium carbonate whisker modified with titanate coupling agent,were also investigated.[Results] The prepared magnesium carbonate whisker is rod-like in morphology,and the largest ratio of length to axes diameter is obtained when MgSO4·7H2O reacts with Na2CO3,and the whisker length reaches the greatest value when reaction time is 30 min.The three surfactants can greatly enhance the ratio of length to axes diameter.The addition of magnesium carbonate whisker modified with titanate coupling agent can obviously improve the flame retardant performance of high density polyethylene (HDPE) and tensile strength.When the content of filled whisker is 40wt% of HDPE,the tensile strength has double.[Conclusion] The rod-like magnesium carbonate whisker can be synthesized by reverse precipitation method,and has good effects on flame retardant and reinforcement on HDPE. |
| Key words: magnesium carbonate whisker reverse precipitation method surface modification flame retardant property |
