文章摘要
高于洋,刘绍英,王庆印,王公应.有机硅接枝三聚氰胺树脂的合成与表面性能[J].精细化工,2020,37(8):
有机硅接枝三聚氰胺树脂的合成与表面性能
Preparation and Surface Properties of Melamine-formaldehyde Resin Grafted by Hydroxyl-terminated Polydimethylsiloxane
投稿时间:2020-01-31  修订日期:2020-04-17
DOI:
中文关键词: 三聚氰胺甲醛树脂  接枝  羟基封端聚二甲基硅氧烷  疏水性能  
英文关键词: Melamine formaldehyde, Graft, Hydroxyl-terminated polydimethylsiloxane, Hydrophobicity,
基金项目:
作者单位E-mail
高于洋 中国科学院成都有机化学研究所 gaoyuyang20@163.com 
刘绍英 中国科学院成都有机化学研究所  
王庆印 中国科学院成都有机化学研究所  
王公应 中国科学院成都有机化学研究所 gywang@cioc.ac.cn 
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中文摘要:
      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,制得一系列改性三聚氰胺树脂(MF-PDMS)。研究了反应介质、PDMS-OH用量对MF-PDMS树脂性能的影响,以及与树脂固化后的MF-PDMS材料性能的关系。采用红外光谱(FT-IR)、固体核磁共振氢谱(1H NMR)、X射线光电子能谱(XPS)、扫描电镜-能谱(SEM-EDS)表征了MF-PDMS材料的结构、表面化学组成,采用接触角测定仪、浸泡法分别测试了材料的接触角、吸水性,采用热重(TG)测试了对材料的热稳定性。结果表明:在二甲基乙酰胺(DMAc)反应介质中,PDMS-OH与三聚氰胺、甲醛可一步合成MF-PDMS树脂,接枝共聚的PDMS-OH可高效的提高MF-PDMS材料的疏水性能和热稳定性,当PDMS-OH的摩尔分数为1.0%(以三聚氰胺物质的量计)时材料的水接触角为91.81°、表面自由能降至28.1 mN/m、吸水质量分数降至2.83%、400 ℃时的残留率为58.03%、700 ℃时的残留率为16.60%。
英文摘要:
      A series of hydroxyl terminated polydimethylsiloxane (PDMS-OH) grafted MF resins (MF-PDMS) were synthesized via an effective method that employing dimethylacetamide (DMAc) as the solvent. The structure and surface chemical composition of MF-PDMS materials were characterized by FT-IR, solid state 1H NMR, XPS and SEM-EDS. The hydrophobicity and thermal properties of MF-PDMS materials were studied by contact angle, immersion and thermogravimetric (TG) analysis. The results indicated that the PDMS-OH has been directly grafted and copolymerized with melamine and formaldehyde in DMAc solvent, MF-PDMS resins have been successfully synthesized. PDMS-OH provided excellent hydrophobicity and thermal stability with MF-PDMS material, when the amount of PDMS-OH was 1.0% (based on the mole of melamine), the water contact angle of MF-PDMS-01 material increased to 91.81°, the surface free energy decreased to 28.1 mN/m, the water adsorption decreased to 2.83%, the residue at 400 ℃ and 700 ℃was 58.03% and 16.60%, respectively.
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