The invention discloses a method for preparing
polyvinylidene fluoride (PVDF)-constructed composite particles with a nuclear shell interpenetrating
network structure. The method comprises the following steps of: adding deionized water into PVDF seed
emulsion, performing
ultrasonic dispersion, adding monomers, after the temperature of a
system is raised to
reaction temperature, adding initiator, and polymerizing; and decompressing the
emulsion,
drying at low temperature until the weight of the
emulsion is constant to prepare the composite particles with the nuclear shell interpenetrating
network structure. The composite particles with the nuclear shell interpenetrating
network structure are formed based on PVDF seeds, effectively combine the respective characteristics of two polymers, and have complementary advantages of the two polymers; the
crystallization temperature of PVDF can be reduced from 142.5 DEG C to 71.4 DEG C in
differential scanning calorimetry (DSC); and melting processability of the PVDF, and the compatibility between the PVDF and other polymers which are not compatible with the PVDF are improved, the
dielectric performance, piezoelectric performance, ferroelectric performance and other performance of the PVDF can be improved, and the composite particles can be widely applied to the fields of
optical fiber coating, outdoor painting and
coating, dental repairing and the like.