高长径比Mg2B2O5纳米线的可控合成及在PHA基复合材料的应用研究

莫兆军; 范英; 林靖; 徐学文; 陈金鹏; 唐成春

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Controllable synthesis of high aspect-ratio Mg2B2O5 nanowires and their applications in reinforced PHA composites

首发时间：2013-03-12

MO Zhaojun ¹
Mo Zhaojun (1984-), Mail, Master. He is currently involved in the investigations of nanofibers and nano-composites.
FAN Ying ¹ LIN Jing ¹ XU Xuewen ¹ CHEN Jinpeng ¹ TANG Chengchun ¹
Tang Chengchun (1968-), Mail, Professor, Nanomaterials.

1、School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130

Abstract：Highly pure magnesium borate (Mg2B2O5) nanowires with an average diameter of ~30 nm, an average length of ~15 μm and a high aspect-ratio of ~500 have been synthesized in a large scale via a two-step method. MgBO2(OH) nanowires with high aspect-ratios were firstly prepared via a PVP-assisted hydrothermal technique. Then using the as-prepared MgBO2(OH) nanowires as precursors, single crystalline Mg2B2O5 nanowires were synthesized by post-annealing treatment at relatively low temperature of 700 C. The important effect of conversion process on the morphology of the Mg2B2O5 nanowires was investigated, which indicated that the recrystallization process played an important role in protection of 1D nanostructure. Moreover, the rigid and the toughness of the Mg2B2O5 nanowires reinforced PHA composites had been tremendously improved compared with pure PHA. The results demonstrate the effectiveness of Mg2B2O5 nanowires for reinforcement applications in polymer composites.

keywords： Nanowire Magnesium borate Recrystallization Reinforcement

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高长径比Mg2B2O5纳米线的可控合成及在PHA基复合材料的应用研究

莫兆军 ¹
Mo Zhaojun (1984-), Mail, Master. He is currently involved in the investigations of nanofibers and nano-composites.
范英 ² 林靖 ² 徐学文 ² 陈金鹏 ² 唐成春 ²
Tang Chengchun (1968-), Mail, Professor, Nanomaterials.

1、材料科学与工程学院，河北工业大学，天津 300130
2、School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130

摘要：本研究采用水热-后处理方法合成了高长径比的Mg2B2O5纳米线，产物的平均直径约30 nm，长度约15 μm，长径比超过500。在制备过程中，首先采用PVP辅助水热法合成大长径比的MgBO2(OH)纳米线；然后以这种纳米线为前驱体，通过调整恰当的后处理工艺，可以再700 C的较低温度下得到Mg2B2O5纳米线产物。研究表明，在后处理过程中重结晶机制对于得到纳米线状产物起到了至关重要的作用。利用这种无机纳米线的强度，Mg2B2O5纳米线增强的PHA复合材料的拉伸强度得到了极大地提高。

关键词：纳米线硼酸镁重结晶复合增强

基金：

1. RFDP （NO. 20091317110005), the Key Project of Chinese Ministry of Education）

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MO Zhaojun,FAN Ying,LIN Jing,et al. Controllable synthesis of high aspect-ratio Mg2B2O5 nanowires and their applications in reinforced PHA composites[EB/OL]. Beijing:Sciencepaper Online[2013-03-12]. https://www.paper.edu.cn/releasepaper/content/201303-446.

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论文编号	201303-446
论文题目	高长径比Mg2B2O5纳米线的可控合成及在PHA基复合材料的应用研究
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