Page 119 - 《精细化工》2022年第3期

第 39 卷第 3 期 精 细 化 工 Vol.39, No.3
2022 年 3 月 FINE CHEMICALS Mar. 2022

功能材料
PDMS 改性蓖麻油基水性聚氨酯的制备及防污性能

吕 斌 1,2,3 ，张鹤年 1,2,3 ，高党鸽 1,2,3*

（1. 陕西科技大学 轻工科学与工程学院，陕西 西安 710021；2. 西安市绿色化学品与功能材料重点实
验室，西安 710021；3. 陕西科技大学 轻化工程国家级实验教学示范中心，陕西 西安 710021）

摘要：二甲基二甲氧基硅烷通过水解缩合反应合成了聚二甲基硅氧烷（PDMS），将 PDMS 引入到蓖麻油基水性
聚氨酯（CWPU-SOP）中，制备出 PDMS 改性的蓖麻油基水性聚氨酯乳液（PDMS/CWPU-SOP）。采用 FTIR、
TEM、SEM 对样品进行了表征，测试了 PDMS/CWPU-SOP 薄膜的水接触角、耐水性、防污性能和机械性能，
探讨了其防污机理。结果表明，与 CWPU-SOP 薄膜相比，当 PDMS 含量（以除去 PDMS、水、丙酮外所有物
质的质量计）为 8%时，制备的 PDMS/CWPU-SOP8 薄膜的水接触角由 85°升至 110°，吸水率由 23.1%下降至
15.3%，PDMS 的引入提高了 CWPU-SOP 薄膜的疏水性和耐水性。此外，不同酸碱性液滴在 PDMS/CWPU-SOP8
薄膜表面可自由滚落且不留痕迹，表明 PDMS/CWPU-SOP8 薄膜具有一定的防污性能。
关键词：蓖麻油基水性聚氨酯；聚二甲基硅氧烷；耐水性；防污性能；功能材料
中图分类号：TQ630.43 文献标识码：A 文章编号：1003-5214 (2022) 03-0541-07

Preparation and antifouling performance of castor oil based
waterborne polyurethane modified by PDMS

LYU Bin 1,2,3 , ZHANG Henian 1,2,3 , GAO Dangge 1,2,3*
（1. College of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021,
Shaanxi, China; 2. Xi'an Key Laboratory of Green Chemicals and Functional Materials, Xi'an 710021, Shaanxi, China; 3.
National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science &
Technology, Xi'an 710021, Shaanxi, China）

Abstract: Polydimethylsiloxane (PDMS) was synthesized by hydrolysis condensation reaction of
dimethyldimethoxysilane and then introduced into castor oil-based waterborne polyurethane (CWPU-SOP)
to prepare PDMS modified castor oil-based waterborne polyurethane emulsion (PDMS/CWPU-SOP). The
samples were characterized by FTIR, TEM and SEM. The water contact angle, water resistance, antifouling
performance and mechanical properties of PDMS/CWPU-SOP films were tested. The antifouling
mechanism was discussed. The results showed that compared with those of CWPU-SOP film, the water
contact angle of PDMS/CWPU-SOP8 film with PDMS content (based on the mass of all substances
excluding PDMS, water and acetone) of 8% increased from 85° to 110°, and the water absorption decreased
from 23.1% to 15.3%. The introduction of PDMS improved the film's hydrophobicity and water resistance.
In addition, droplets with different acid and alkaline could roll freely on the surface of PDMS/CWPU-SOP8
film without leaving any trace, indicating that PDMS/CWPU-SOP8 film had certain antifouling
performance.
Key words: castor oil-based waterborne polyurethane; polydimethylsiloxane; water resistance; antifouling
performance; functional materials

防污涂料能够有效防止基底被污染侵蚀，其作 具有重要应用 [1-3] 。随着人们环保意识的提高，水性
为保护材料在海洋船体防污、建筑材料防污等方面 聚氨酯（WPU）因其良好的成膜性能作为防污涂层

收稿日期：2021-09-10; 定用日期：2021-11-24; DOI: 10.13550/j.jxhg.20210882
基金项目：陕西省重点研发计划（2020GY-258）；陕西省创新能力支撑计划（2021TD-16）
作者简介：吕 斌（1980—），男，教授，E-mail：xianyanglvbin@163.com。联系人：高党鸽（1982—），女，教授，E-mail：
dangge2000@126.com。