Premium
Effect of nano‐TiO 2 on MP‐25 resin
Author(s) -
Xiang Bin,
Shengtao Zhang,
Wenzhang Huang,
Baorong Hou
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.27223
Subject(s) - x ray photoelectron spectroscopy , materials science , dielectric spectroscopy , irradiation , gloss (optics) , coating , chlorine , nuclear chemistry , nano , titanium dioxide , chemical engineering , electrochemistry , composite material , chemistry , electrode , physics , nuclear physics , engineering , metallurgy
MP‐25 resin is a chlorine‐containing polymer widely used in coatings. The effects of two types of nano‐TiO 2 (P‐25 and RM301 LP) on MP‐25 were studied with saline immersion, UV irradiation, and electrochemical impedance spectroscopy. UV irradiation was evaluated in terms of gloss change and X‐ray photoelectron spectroscopy (XPS). The results indicate that, compared to pigment R‐930 TiO 2 , P‐25 reduced the immersion resistance and accelerated UV aging of the MP‐25 coating, whereas RM301 LP showed the opposite effects. XPS analysis showed that MP‐25 resin degraded under UV irradiation via dechlorination and CC bond breakage, similarly to poly(vinyl chloride), but RM301 LP could inhibit the aging of MP‐25 to a certain extent. A skin effect of oxygen and chlorine was identified in MP‐25 resin by XPS. RM301 LP could improve the impedance of the MP‐25 coating because of its excellent fill capacity. Hence, rutile nano‐TiO 2 RM301 LP represents an excellent additive for MP‐25 resin. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008