A Study on foam buffer material based on wet-laid nonwoven foam forming method

Abstract The fiber porous material made by foam forming has the advantages of being lightweight, low cost, and easy-processing, but its high porosity also limits the mechanical properties. In this work, wet-laid nonwoven foam forming method as a novel approach was applied in the preparation of Lyocell fiber-based buffer materials. A stable foaming system of Lyocel fiber was explored, which can keep Lyoccell fiber dispersed well during the forming process to form a porous structure. When the fiber concentration is 3%, choosing SDBS as the foaming agent, pH=7, PET fiber and styrene-acrylic emulsion were used to improve material resilience and elastic modulus. Disintegrability tests under composting conditions also confirmed the biodegradable character of buffer materials.