咪唑基聚离子液体微球的制备及其电流变性能

doi:10.11901/1005.3093.2016.594

材料研究学报

2017, Vol. 31

Issue (9): 679-686 DOI: 10.11901/1005.3093.2016.594

研究论文

本期目录 | 过刊浏览

咪唑基聚离子液体微球的制备及其电流变性能

张志刚, 张红阳, 郝博男, 王梦, 张海全, 刘迎丹(

), 张振琳(

)

燕山大学亚稳材料制备技术与科学国家重点实验室材料科学与工程学院秦皇岛 066004

Preparation and Electrorheological Properties of Imidazolium-based Poly (ionic liquid) Microspheres

Zhigang ZHANG, Hongyang ZHANG, Bonan HAO, Meng WANG, Haiquan ZHANG, Yingdan LIU(

), Zhenlin ZHANG(

)

State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China

引用本文:

张志刚, 张红阳, 郝博男, 王梦, 张海全, 刘迎丹, 张振琳. 咪唑基聚离子液体微球的制备及其电流变性能[J]. 材料研究学报, 2017, 31(9): 679-686.
Zhigang ZHANG, Hongyang ZHANG, Bonan HAO, Meng WANG, Haiquan ZHANG, Yingdan LIU, Zhenlin ZHANG. Preparation and Electrorheological Properties of Imidazolium-based Poly (ionic liquid) Microspheres[J]. Chinese Journal of Materials Research, 2017, 31(9): 679-686.

全文: PDF(852 KB) HTML

摘要:

用分散聚合方法制备了微米尺寸的咪唑基聚离子液体(PIL)微球颗粒(P[C₁₂VIm][BF₄]),使用核磁氢谱、傅里叶红外光谱仪、X射线衍射分析仪和扫描电镜等手段表征材料的结构及形貌,用旋转流变仪和宽频介电谱仪测量了电流变效应和介电性能。结果表明,咪唑基聚离子液体材料具有规则的球形和良好的热稳定性;用这种材料制备的电流变液具有显著的电流变效应,其剪切应力、黏度以及动态模量都随着电场强度的提高而增大,显示出优良的电流变性能。

关键词 ：有机高分子材料, 聚离子液体, 电流变, 分散聚合, 咪唑

Abstract：

Imidazolium-based poly(ionic liquid) (PIL) microspheres, poly(1-dodecyl-3-vinylimidazolium tetrafluoroborate) (P[C₁₂VIm][BF₄]), were synthesized through a dispersion polymerization process. The structure and morphology of the PIL microspheres were characterized by means of ¹H nuclear magnetic resonance, Fourier infrared spectrometer, X- ray diffractometer and scanning electron microscopy. Their electrorheological and dielectric properties were measured by rotational rheometer and broad-band dielectric spectrometer, respectively. The results show that imidazolium-based PIL material is well-defined microspheres and has excellent thermal stability. In this PIL electrorheological system, a remarkable electrorheological effect was observed, in which shear stress, viscosity and dynamic modulus increase with the increasing electric field strength.

Key words： organic polymer materials poly(ionic liquid) electrorheology dispersion polymerization imidazolium

收稿日期: 2016-10-11

ZTFLH:

O632.6

基金资助:国家自然科学基金(21403186, 51703193),河北省自然科学基金(E2015203257)以及河北省高等学校科学技术研究项目(QN20131070)

作者简介:

作者简介张志刚,男,1990年生,硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2016.594 或 https://www.cjmr.org/CN/Y2017/V31/I9/679

图1 P[C12VIm][BF4]微球的合成路线图

图2 P[C12VIm][BF4]球形颗粒的SEM图像

图3 P[C12VIm][BF4]微球的XRD图谱

图4 [C12VIm][BF4] 单体和P[C12VIm][BF4] 聚合物的1H NMR谱图

图5 (a) [C12VIm][BF4] (b) P[C12VIm][BF4])的红外光谱图

图6 P[C12VIm][BF4]的TGA曲线

图7 P[C12VIm][BF4]微球在固定剪切速率(γ=1 s-1)下剪切应力与方波电场的关系(t=30 s)

图8 P[C12VIm][BF4]电流变液在不同的电场下剪切应力与剪切速率的关系(T=23℃)

表1 为聚离子液体P[C12VIm][BF4]微球硅油体系流变曲线拟合方程中的参数

图9 P[C12VIm][BF4]微球电流变液的动态屈服应力与电场强度的关系

图10 P[C12VIm][BF4]微球电流变液在不同的电场下剪切黏度与剪切速率的关系

图11 不同电场下P[C12VIm][BF4]微球电流变液储能模量(G')和耗能模量(G′′)与应变的关系

图12 不同电场条件下P[C12VIm][BF4]微球电流变液储能模量(G')和耗能模量(G′′)与角频率的关系

图13 P[C12VIm][BF4]微球电流变液的(a)介电谱图（介电常数ε′：实心;损耗因子ε″：空心）和(b)Cole-Cole拟合曲线

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