The deposition of wax on the surface of the pipeline
or the facilities
is harmful to oil industries, which can cause serious safety problems
and economic loss. To address this problem, a degradable glutinous
rice/chitosan-phytic acid composite coating (GR/CS-PA) was prepared.
The GR can serve as an adhesive, and it can also enhance the flexibility
of CS-PA. The CS-PA component can be used to retain water to prevent
the adhesion of crude oil and enhance the mechanical properties of
the antiwaxing layer. With the hydration layer on the surface of the
GR/CS-PA coating, which can prevent contact between the pollutants
and the GR/CS-PA, the coating possesses excellent antifouling properties,
especially excellent antiwaxing performance. In addition, an antiwaxing
performance testing method was established to quantificationally evaluate
the antiwaxing performance of the coating, and the antiwaxing performance
(AWP) value was proposed to be the criterion of the antiwaxing performance
of the coating. We hope that the green coating and the quantitative
testing method can be applied in the petroleum industry to solve the
wax deposition problem.