Premium
Enhanced properties of phthalonitrile resins under lower curing temperature via complex curing agent
Author(s) -
Weng Zhihuan,
Hu Yue,
Qi Yu,
Zhang Shouhai,
Liu Cheng,
Wang Jinyan,
Jian Xigao
Publication year - 2020
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.4762
Subject(s) - phthalonitrile , curing (chemistry) , materials science , thermal stability , melamine resin , composite material , polymer chemistry , organic chemistry , chemistry , phthalocyanine , nanotechnology , coating
High curing temperature has been restricting the application and development of phthalonitrile resin. A complex curing agent containing melamine (ME) and ZnCl 2 was developed to promote the curing reaction of resorcinol‐based phthalonitrile resin (DPPH). The thermal stability of ME can be significantly enhanced via adding ZnCl 2 , which was due to the interaction between ZnCl 2 and amino group in ME. Moreover, the activities of pristine ZnCl 2 and ME were improved via mixing, especially, the curing temperature for DPPH can be effectively reduced. Even at a curing temperature of 300°C, the 5% weight loss temperature of the resulting resin cured with complex curing agent still exceeded 500°C, which was much higher than those with pristine curing agents. In addition, the good long‐term oxidation stability and relatively low water absorption can also be obtained in the resins cured with novel curing agent. This work affords a facile route for designing high‐performance curing agent to improve the curing process of phthalonitrile resin.