Page 109 - 《精细化工》2023年第3期

第 40 卷第 3 期 精 细 化 工 Vol.40, No.3
20 23 年 3 月 FINE CHEMICALS Mar. 2023

功能材料
3D 打印炭黑/水性聚氨酯导电复合材料的制备及性能

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郑 玲 ，邓 鑫 1,2* ，焦晓岚 ，赵秀平
（1. 中南林业科技大学 材料科学与工程学院，湖南 长沙 410004；2. 中南林业科技大学 材料表界面科
学与技术湖南省重点实验室，湖南 长沙 410004）

摘要：采用硅烷偶联剂 KH550 对炭黑（CB）进行了改性，得到了 KH550 改性的 CB（KH550/CB），通过 FTIR、
DLS 和 SEM 对 CB 和 KH550/CB 进行了表征，采用共混法和流延浇铸法分别制备了 CB/水性聚氨酯（CB/WPU）
复合材料与 KH550/CB/水性聚氨酯（KH550/CB/WPU）复合材料。利用直写式 3D 打印，探讨了不同的填充图
案和填充率对 KH550/CB/WPU 复合材料性能的影响。结果表明，KH550/CB 粒径约为 620 nm，分散均匀，在
WPU 基体中分散性更好，导电粒子之间连接得更紧密。当 CB 与 KH550/CB 含量（以 WPU 质量为基准，下同）
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均为 3%时，KH550/CB/WPU 复合材料的电导率为 1.79×10 S/m，比 CB/WPU 复合材料的电导率增加了 14 倍；
CB 与 KH550/CB 含量均为 2%时，KH550/CB/WPU 复合材料的拉伸强度比 CB/WPU 复合材料增加了 175%。选
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择填充图案为线形、填充率为 80%时，KH550/CB/WPU 导电性能较好，电导率达到 2.66×10 S/m，与其他非
3D 打印产品相比，其导电性能提升了 1~2 个数量级。
关键词：水性聚氨酯；炭黑；共混；电导率；直写 3D 打印；功能材料
中图分类号：TQ323.8 文献标识码：A 文章编号：1003-5214 (2023) 03-0565-07

Preparation and properties of 3D printed carbon black/waterborne
polyurethane conductive composites

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ZHENG Ling , DENG Xin 1,2* , JIAO Xiaolan , ZHAO Xiuping
（1. School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha
410004, Hunan, China; 2. Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology,
Central South University of Forestry and Technology, Changsha 410004, Hunan, China）
Abstract: KH550 modified carbon black (CB) (KH550/CB) was obtained from CB with silane coupling
agent KH550. KH550/CB were then characterized by FTIR, DLS and SEM. CB/waterborne polyurethane
(CB/WPU) composites and KH550/CB/waterborne polyurethane (KH550/CB/WPU) composites were further
prepared by blending and casting method, respectively. The effects of filling pattern and filling rate on the
properties of KH550/CB/WPU composites were investigated thorugh direct-write 3D printing. The results
showed that KH550/CB had a uniformly distributed particle size of about 620 nm, and exhibited better
dispersion in WPU matrix with the conductive particles connected more closely. When content of both CB
and KH550/CB (based on the mass of WPU, the same below) was 3% in the composites, the conductivity of
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KH550/CB/WPU composites was 1.79×10 S/m, 14 times higher than that of CB/WPU composites. When
content of both was 2%, the tensile strength of KH550/CB/WPU composites was 175% higher than that of
CB/WPU composites. When the filling pattern was linear and the filling rate was 80%, KH550/CB/WPU
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displayed good conductivity of 2.66×10 S/m, improved 1~2 orders of magnitude in comparison to other
non-3D printed products.
Key words: waterborne polyurethane; carbon black; blending; conductivity; direct-write 3D printing;
functional materials

收稿日期：2022-06-28; 定用日期：2022-09-27; DOI: 10.13550/j.jxhg.20220601
基金项目：湖南省自然科学基金-省市联合基金项目（2019JJ60075）；材料表界面科学与技术湖南省重点实验室开放课题
作者简介：郑 玲（1997—），女，硕士生，E-mail：1909752094@qq.com。联系人：邓 鑫（1981—），女，副教授，E-mail：dengxin81@ aliyun.com。