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Frontal polymerization in anisotropic systems with embedded metal strips shows orientation-dependent behavior. The study proposes a homogenized model to predict front velocity variations based on system size and strip interactions.

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Polymer Science

Background:

  • Frontal polymerization offers rapid material processing.
  • Thermally anisotropic systems introduce complex heat transfer dynamics.
  • Understanding metal-resin interactions is crucial for controlled polymerization.

Purpose of the Study:

  • To investigate the orientation-dependent behavior of frontal polymerization in a thermally anisotropic system.
  • To analyze the influence of embedded copper strips on polymerization front propagation.
  • To develop a homogenized model for predicting front velocity in such systems.

Main Methods:

  • Experimental investigation of frontal polymerization.
  • Multiphysics finite element analysis (FEA).
  • Development and validation of a two-dimensional homogenized model.

Main Results:

  • Front propagation velocity and shape are orientation-dependent due to interactions with copper strips.
  • Front velocity increases with decreasing system size, approaching homogenized predictions.
  • Numerical parametric analyses revealed key relationships between system geometry and polymerization dynamics.

Conclusions:

  • The study successfully demonstrates and models the anisotropic nature of frontal polymerization in metal-resin composites.
  • The proposed homogenized model provides a valuable tool for predicting and optimizing frontal polymerization processes in anisotropic systems.
  • Findings offer insights for designing advanced materials with tailored polymerization characteristics.