US EPA

3857376 

Journal Article 

Preparation and characterization of yellowing resistance and low volume shrinkage of fluorinated polysiloxane urethane acrylate 

Ping, Tuo; Zhou, Y; He, Y; Tang, Y; Yang, J; Akram, MY; Nie, Jun 

2016 

1 

Progress in Organic Coatings
ISSN: 0300-9440 

97 

74-81 

10.1016/j.porgcoat.2016.03.023 

WOS:000378181500009 

Fluorinated polysiloxane urethane acrylates were synthesized by 1H,1H,2H,2H-Perfluorooctanol (F13), polysiloxane (PSi), isophorone diisocyanate (IPDI) and 2-hydroxyethyl acrylate (HEA). The molecular structure was characterized by FTIR, GPC, and XPS. The yellowing resistance was measured by sphere Spectrophotometer and ultraviolet-visible spectrophotometer. The volume shrinkage was measured by laser displacement sensor (LDS). The glass-transition temperature (Tg) and storage modulus (E') were measured by dynamic mechanical analysis (DMA). Real time infrared (RTIR) spectroscopy was used to investigate the reaction kinetics of photopolymerization of synthesized fluorinated polysiloxane urethane acrylate (PSi-IPDI-HEA-F13). It was proved that the introduced of 1H,1H,2H,2H-Perfluorooctanol into the system of polysiloxane urethane acrylates (PSi-IPDI-HEA) could increase the yellowing resistance and decrease the volume shrinkage. Thermal stability was reduced by a small amount. (C) 2016 Elsevier B.V. All rights reserved. 

Polysiloxane; Urethane acrylate; Volume shrinkage; Yellowing resistance; 1H,1H,2H,2H-Perfluorooctanol