Lignin Waste Polyurethane Cushion Packaging Materials Research

Polyurethane (referred to as PU) is a polymer made from polyisocyanate and a polyether polyol or polyester polyol and small molecule polyol, polyamine or water chain extenders or crosslinking agent, such as raw materials. By changing the type of material and composition, you can dramatically change the form of products and their performance, the final product from soft to hard. Lignin, a natural renewable resources, natural aromatic polymer has a hydroxyl-containing three-dimensional structural characteristics, the research and application has become increasingly active. The introduction of the lignin in the material, not only can improve the performance of the material but also reduce costs, resulting in considerable economic benefits. If we can combine the two advantages of the manufacture of composite materials to become a demand. The subjects explored the impact of the alkali lignin waste polyurethane foam and curing agent on the performance of the polyurethane foam through experiments that the above factors, the ratio of the manufacture of polyurethane foam: phenolic resin 250g, adding emulsifier 30g, foamagent alkali lignin 40g, waste polyurethane 30g, hardener 100g from the foam strength of 380KPa and low cost.