Microporous Structure Analysis and Optimisation
topic
Microporous PU coating structure characterisation uses scanning electron microscopy of cross-sections to measure pore size distribution, porosity percentage, and cell wall thickness, mercury intrusion porosimetry for pore size distribution measurement, and air permeability testing that collectively characterise the three-dimensional pore network structure that determines the breathability and water vapour transmission rate of the coagulated PU coating.
Role
Provides the structural understanding of coagulated PU coating porosity that enables process optimisation for target breathability performance by correlating coagulation conditions with resulting pore structure through electron microscopy and porosity measurement, enabling systematic process development for new PU formulations and substrate combinations without relying solely on end-performance testing that does not reveal the structural root cause of performance variation.
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