Scienstist studied the development of functional polyurethane/iron oxide composites as a protective coating system for steel.

Scienstist studied the development of functional polyurethane/iron oxide composites as a protective coating system for steel.
a protective and reinforcing coating system for steel using polyurethane (PU) and red iron oxide (RIO) pigments. Two types of PU resins (COPU and PEGPU) based on castor oil (CO) and polyethyl glycol 1000 (PEG1000) have been prepared, respectively, with powerful structural skeletons that protect steel surfaces from corrosion

.
preparation process is synthesized with polyols and prejudes. COPU, PEGPU and prejudgment are indicated by gel permeable chromatography (GPC), Fourier Transform Infrared (FTIR), Proton Magnetic Resonance (HNMR), differential scanning thermal method (DSC) and transmission electron microscope (TEM).
RIO as anticorrosive pigment
by mixing COPU or PEGPU in 20%, 30% and 40% pigment volume concentration (PVC) with RIO as corrosion-resistant pigments to prepare COPU20, COPU30 and COPU40 and PEGPU20, PEGPU30 and PEGPU40, respectively.
PVC of rio were below the critical pigment volume concentration (CPVC) of 42.8%. COPU / RIO shows higher protection efficiency than PEGPU / RIO, with 40% of PVC in both PU resins performing the best protection.
the
can be found in volume 136 of Progress
Organic Coatings.
.