Page 69 - 《精细化工》2020年第8期

第 37 卷第 8 期 精 细 化 工 Vol.37, No.8
202 0 年 8 月 FINE CHEMICALS Aug. 2020

功能材料
有机硅接枝三聚氰胺树脂的合成及其表面性能

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高于洋 1,2 ，刘绍英 ，王庆印 ，王公应 1,2*
（1. 中国科学院成都有机化学研究所，四川 成都 610041；2. 中国科学院大学 挥发性有机物污染控制
材料与技术国家工程实验室，北京 101408）

摘要：以三聚氰胺和多聚甲醛为原料、羟基封端聚二甲基硅氧烷（PDMS-OH）为改性剂，制得了一系列 PDMS-OH
接枝改性的三聚氰胺树脂（MF-PDMS）。考察了溶剂、PDMS-OH 用量对 MF-PDMS 性能的影响以及 PDMS-OH
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用量对 MF-PDMS 固化膜性能的影响。采用 FTIR、 HNMR、XPS、SEM-EDS 对 MF-PDMS 的结构、表面化学
组成进行了表征；用接触角测定仪、浸泡法分别测试了树脂的接触角和吸水性；采用 TG 测试了树脂的热稳定
性。结果表明，以 N,N-二甲基乙酰胺（DMAc）为溶剂，PDMS-OH 与三聚氰胺、多聚甲醛可一步合成 MF-PDMS。
PDMS-OH 的引入可高效地提高 MF-PDMS 的疏水性能和热稳定性，当 PDMS-OH 的用量为 1%（以三聚氰胺物
质的量计，下同）时，制备的 MF-PDMS-01 膜的水接触角为 91.81°，表面自由能降至 28.1 mN/m，吸水质量分
数降至 2.83%，400 ℃时的质量残余率为 50.44%、700 ℃时的质量残余率为 16.60%。
关键词：三聚氰胺树脂；接枝；羟基封端聚二甲基硅氧烷；疏水性能；功能材料
中图分类号：TQ323.3 文献标识码：A 文章编号：1003-5214 (2020) 08-1567-07

Preparation and surface properties of melamine-formaldehyde
resin grafted by hydroxyl terminated polydimethylsiloxane

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1,2
GAO Yuyang , LIU Shaoying , WANG Qingyin , WANG Gongying 1,2*
（1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China; 2. National
Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences,
Beijing 101408, China）
Abstract: A series of modified melamine-formaldehyde resins (MF-PDMS) grafted by hydroxyl terminated
polydimethylsiloxane (PDMS-OH) were synthesized with melamine and paraformaldehyde as raw materials
and PDMS-OH as modifier. The effects of solvent type and PDMS-OH dosage on the properties of
MF-PDMS and PDMS-OH dosage on the properties of MF-PDMS curing films were investigated. The
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structure and surface chemical composition of MF-PDMS were characterized by FTIR, HNMR, XPS and
SEM-EDS. The hydrophobicity and thermal stability of MF-PDMS were evaluated by contact angle
measurement, immersion method and TG. The results indicated that MF-PDMS was successfully obtained
by one-step reaction from PDMS-OH, melamine and paraformaldehyde with N,N-dimethylacetamide
(DMAc) as solvent. The introduction of PDMS-OH could efficiently improve the hydrophobicity and
thermal stability of MF-PDMS. When the dosage of PDMS-OH was 1% (based on the molar of melamine,
the same below), the prepared MF-PDMS-01 film had a water contact angle of 91.81°, surface free energy
of 28.1 mN/m, and water adsorption mass fraction of 2.83%. The mass residue at 400 and 700 ℃ were
50.44% and 16.60%, respectively.
Key words: melamine formaldehyde resin; grafting; hydroxyl terminated polydimethylsiloxane; hydrophobicity;
functional materials

收稿日期：2020-01-31; 定用日期：2020-04-17; DOI: 10.13550/j.jxhg.20200072
基金项目：四川省科技支撑计划项目（2017GZ0252）
作者简介：高于洋（1986—），男，博士生，E-mail：gaoyuyang20@163.com。联系人：刘绍英（1965—），女，研究员，Email：
syliu@cioc.ac.cn；王公应（1962—），男，研究员，E-mail：gywang@cioc.ac.cn。