Foaming study of polyurethane insulation for cold storage based on aspen plus

Abstract Based on a polyurethane high-pressure foaming device, the process of synthesizing polyurethane from isocyanate (-NCO) and polyether polyol (-OH) under the catalytic effect of various additives was simulated. Using the Aspen Plus software platform, a flow model of the polyurethane high-pressure foaming process was established. The effects of isocyanate index, reaction temperature, catalyst mixing ratio, and other factors on the polyurethane process were investigated. The sensitivity analysis of the data was carried out by Energy Analyzer, and the optimized process operating parameters were obtained: isocyanate index R=1.15, reactor temperature of 60°C, and catalysts DMCHA and T-12 contents of 2 wt% and 0.05 wt%. Under these conditions, the processing time was reduced by 9.75% and the product conversion was improved by 12.19%. This provides a very important theoretical basis and practical significance for the process production of polyurethane materials.