The present application relates to the field of
polymer polymerization processing and foaming forming, and discloses a kind of full biodegradable
sponge preparation
system and method, comprising: the pressure fluctuation curve in collection channel is collected and
viscosity parameter and pressure fluctuation change rate are calculated, according to which the injection flux of
foaming agent is formulated, while controlled
electric field is applied according to pressure fluctuation change rate at the outlet end, the radial change of flow passage cross-sectional area is utilized by piezoelectric deformation to adjust local resistance flow
back pressure, the pressure drop change rate when material passes through convergent module is stabilized, the heat-sensitive
chain scission loss of degradable material is constructed according to the hedging mechanism, effectively cooperate with the injection flux of
foaming agent and the strength of dilute melt, eliminate the
cell body bubble collapse defect caused by the imbalance of multiphase interface
viscoelasticity dissipation, under the premise of avoiding adding exogenous chemical crosslinking agent, improve the molecular weight
retention rate of
polymer main
chain segment, synergistically enhance the isotropic narrow distribution of
cell pores and mechanical
toughness of
sponge finished product.