Page 40 - 《精细化工》2020年第1期

第 37 卷第 1 期 精 细 化 工 Vol.37, No.1
202 0 年 1 月 FINE CHEMICALS Jan. 2020

功能材料
碳点/水性聚氨酯复合材料的制备及性能

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姜时锋，罗 珍，许戈文 ，黄毅萍，鲍俊杰，熊潜生
（安徽大学 化学化工学院，安徽省绿色高分子材料重点实验室，水基高分子材料安徽省工程技术研究中心，
安徽 合肥 230601）

摘要：以异氟尔酮二异氰酸酯（IPDI）和聚氧化丙烯二醇（PPG）为原料制备水性聚氨酯，以此为碳源，采用
水热法制备碳点，再以 IPDI 和聚己二酸-1,4-丁二醇酯二醇（PBA）为原料，将不同质量分数的碳点加入反应体
系中，制得碳点/水性聚氨酯复合材料。采用 FTIR、TEM、SEM、TGA、DSC、UV-Vis、荧光光谱以及力学性
能测试等对复合材料结构和性能进行检测和表征。结果显示，复合胶膜的热稳定性、荧光性能、力学强度都因
碳点的加入得到提高，当碳点加入质量分数达 0.5%时，复合胶膜的量子产率和荧光寿命分别为 4.15%和 2.43 ns，
胶膜的拉伸强度和断裂伸长率分别为 36.80 MPa 和 660%，比未加碳点的样品分别提高了 29.7%和 33.3%。
关键词：碳点；水性聚氨酯；复合胶膜；功能材料
中图分类号：TQ 323.8 文献标识码：A 文章编号：1003-5214 (2020) 01-0026-07

Preparation and properties of carbon dots/waterborne

polyurethane composites

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Jiang Shifeng, Luo Zhen, Xu Gewen , Huang Yiping,
Bao Junjie, Xiong Qiansheng
（Key Laboratory of Environment-Friendly Polymer Materials of Anhui Province, Anhui Province Engineering Technology
Research Center of Water-Borne Polymer Materials, College of Chemistry and Chemical Engineering, Anhui University, Hefei
230601, Anhui, China）

Abstract: Waterborne polyurethane was synthesized from isophorone diisocyanate (IPDI) and
polyoxypropylene diol (PPG) and then it was used as carbon source for the preparation of carbon dots (CDs)
with hydrothermal method. CDs with different mass fractions were added to the reaction system of IPDI
and polyadipate-1,4-butanediol diol (PBA) to prepare carbon dots/waterborne polyurethane composite
materials. The structure and properties of the composite materials were characterized by FTIR, TEM, SEM,
TGA, DSC, UV-Vis, fluorescence spectroscopy and mechanical properties tests. The results showed that the
addition of CDs improved the thermal stability, fluorescence performance and mechanical strength of the
composite films. When the mass fraction of CDs was 0.5%, the quantum yield and fluorescence lifetime of
the prepared composite film were 4.15% and 2.43 ns, respectively. The tensile strength and elongation at
break of the film were 36.80 MPa and 660%, respectively, which were 29.7% and 33.3% higher than those
of film without addition of carbon dots.
Key words: carbon dots; waterborne polyurethane; composite films; functional materials

水性聚氨酯（WPU）具有良好的力学、弹性、耐 构和配比的原料来调节，具有极大的灵活性，但纯
化学性、零排放或低排放挥发性有机物等性能，使 WPU 的材料性能还难以完全满足应用要求。向 WPU
其逐渐成为一种通用高分子材料而应用于涂料、胶 中引入无机纳米粒子是改善其性能的常用方法，将
粘剂、弹性体等 [1-2] 。WPU 性能可通过采用不同结 纳米材料加到 WPU 中，有助于改善原材料的力学

收稿日期：2019-04-26; 定用日期：2019-07-08; DOI: 10.13550/j.jxhg.20190367
基金项目：安徽省自然科学基金项目（1808085QE173,1808085ME156）；安徽省高校科学研究项目（KJ2017A031，KJ2018ZD004）
作者简介：姜时锋（1995—），男，硕士生，E-mail：jsfzombie@163.com。联系人：许戈文（1961—），男，教授，E-mail：gwxu@ahu.edu.cn。