导向管喷动流化床中废弃印刷线路板的非金属颗粒包覆改性

doi:10.11949/j.issn.0438-1157.20141351

化工学报 ›› 2015, Vol. 66 ›› Issue (3): 1185-1193.DOI: 10.11949/j.issn.0438-1157.20141351

• 材料化学工程与纳米技术 • 上一篇下一篇

导向管喷动流化床中废弃印刷线路板的非金属颗粒包覆改性

谢恒来, 吴曼, 赵军, 陈义忠, 郭庆杰

青岛科技大学化工学院, 山东省多相流体反应与分离工程重点实验室, 山东青岛 266042

收稿日期:2014-09-04 修回日期:2014-11-17 出版日期:2015-03-05 发布日期:2015-03-05
通讯作者: 郭庆杰
基金资助:
国家高技术研究发展计划项目(SS2012AA062613);山东省科技攻关项目(2008GG10006010)。

Coating modification of non-metal particles of waste printed circuit boards in spout-fluid bed with draft tube

XIE Henglai, WU Man, ZHAO Jun, CHEN Yizhong, GUO Qingjie

Key Laboratory of Multi-phase Fluid Reaction Engineering and Separation Engineering, Shandong Province, School of Chemical Engineering, Qingdao University of Science & Technology, Qingdao 266042, Shandong, China

Received:2014-09-04 Revised:2014-11-17 Online:2015-03-05 Published:2015-03-05
Supported by:
supported by the National High Technology Research and Development Program of China (SS2012AA062613) and the Key Scientific and Technological Project in Shandong Province (2008GG10006010).

摘要/Abstract

摘要：

以3-氨基丙基三乙氧基硅烷(KH-550)为改性剂,在导向管喷动流化床内对废弃印刷线路板的非金属颗粒(NPWPCB)进行包覆改性,研究了颗粒包覆过程中KH-550溶液(体积分数20%)用量、喷雾速率、雾化气速、床层温度及喷动气速等操作参数对NPWPCB改性效果的影响。以聚丙烯(PP)为基体、改性NPWPCB为填料,采用挤出注塑工艺制备了PP/NPWPCB复合材料。通过红外光谱图和扫描电子显微镜对改性前后NPWPCB表面官能团及复合材料冲击断面微观形貌的分析表明,KH-550可以增加NPWPCB与PP基体之间的界面黏结强度,提高PP/NPWPCB复合材料的力学性能。当KH-550溶液用量为75 ml、喷雾速率为3.2 cm·s^-1、雾化气速为58.98 m·s^-1、床层温度为80℃、喷动气速为29.49 m·s^-1时,复合材料的弯曲、拉伸和冲击强度较改性前分别提高了15.07%、17.52%和16.32%。

关键词: 导向管喷动流化床, 废弃印刷线路板的非金属颗粒, 包覆改性, 废物处理, 复合材料, 粉体技术

Abstract:

Non-metal particles of waste printed circuit boards (NPWPCB) were modified with 3-aminopropyltriethoxysilane (KH-550) by coating in a spout-fluid bed with draft tube. To obtain the range of operating parameters for the modification, the effects of KH-550 solution (20%(vol)) volume, spray rate, atomizing gas velocity, bed temperature, and spouting gas velocity on modification were evaluated. The modified NPWPCB were used as filler to fabricate PP/NPWPCB composites by extrusion and injection molding. The variations of the surface functional groups and the cross-section morphology were characterized by infrared spectroscopy and scanning electron microscopy. Modified NPWPCB improved the interface bonding between NPWPCB and PP, which enhanced the mechanical properties of PP/NPWPCB composites. At KH-550 solution (20%(vol)) volume of 75 ml, spray rate of 3.2 cm·s^-1, atomizing gas velocity of 58.98 m·s^-1, bed temperature of 80℃, and spouting gas velocity of 29.49 m·s^-1, flexural strength, tensile strength, and impact strength of the composites increased by 15.07%, 17.52% and 16.32%, respectively.

Key words: spout-fluid bed with draft tube, non-metal particles of waste printed circuit boards, coating

中图分类号:

X783.2

谢恒来, 吴曼, 赵军, 陈义忠, 郭庆杰. 导向管喷动流化床中废弃印刷线路板的非金属颗粒包覆改性[J]. 化工学报, 2015, 66(3): 1185-1193.

XIE Henglai, WU Man, ZHAO Jun, CHEN Yizhong, GUO Qingjie. Coating modification of non-metal particles of waste printed circuit boards in spout-fluid bed with draft tube[J]. CIESC Journal, 2015, 66(3): 1185-1193.

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导向管喷动流化床中废弃印刷线路板的非金属颗粒包覆改性

Coating modification of non-metal particles of waste printed circuit boards in spout-fluid bed with draft tube

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