Chinese Journal of Applied Chemistry ›› 2016, Vol. 33 ›› Issue (10): 1154-1160.DOI: 10.11944/j.issn.1000-0518.2016.10.160006

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Preparation and Charaterization of Hexakis(methoxymethyl)melamine Crosslinking Waterborne Polyurethane

LIN Qiang,GUO Shuyi,HUANG Yiping(),XU Gewen,BAO Junjie,CHENG Qin   

  1. Anhui Province Key Laboratory of Environment-friendly Polymer Materials,School of Chemistry and Chemical Engineering of Anhui University,Hefei 230601,China
  • Received:2016-01-05 Accepted:2016-05-03 Published:2016-10-08 Online:2016-10-08
  • Contact: HUANG Yiping

Abstract:

Hexakis(methoxymethyl)melamine(HMMM) was used to cross-linking modify anionic waterborne polyurethane with methoxypoly ethylene glycol side chain(Ymer N120) to improve the performance of polyurethane, such as, heat resistance, water resistance and mechanical properties. The structure, thermal properties and mechanical properties of the films were characterized by attenuated total reflectance Fourier transform infrared spectroscopy(ATR-FTIR), differential scanning calorimeters(DSC), and tensile machine. The results show that with the increase of the mass fraction of HMMM, hydrogen bonding interaction of NH groups is weakened, while the heat resistance, water resistance, tensile strength, adhesiveness of polyurethane are all improved in a certain extent. When the mass fraction of HMMM is 8%, the tensile strength of composite materials increases by 125%, T-type peel strength increases by 7.4 N/cm,temperature of hard segment's maximum thermal decomposition rate increases by 38 ℃. In addition, the water resistance of crosslinking waterborne polyurethane film has been greatly improved.

Key words: hexamethoxymethyl melamine, methoxypolyethyleneglycols, anionic waterborne polyurethane