Compression properties and thermal stability of nanoparticles on rigid polyurethane foam for packaging design materials

Rigid polyurethane foam has the advantages of excellent mechanical properties, lightweight, sound absorption, chemical corrosion resistance, etc., and is widely used. However, ordinary rigid polyurethane foam has poor compression performance and cannot meet the performance requirements of some materials. To improve the compression properties of rigid polyurethane foams, the constant-density polyurethane foams are reinforced with particle reinforcements. From the experimental data in this paper, it can be concluded that the decomposition process of pure RPUF and UC flame-retardant RPUF is almost the same in the range of 270~390°C. The maximum thermal decomposition temperature (Tmax) and the maximum thermal decomposition rate (Rmax) of the second stage of the two are also very similar. In contrast, the carbon residue rate of pure RPUF800°C is only 11.2%. After adding 10, 20, 30, and 40 parts of UC flame retardant, the residual carbon rates were 19.2%, 20.7%, 22.3%, and 23.9%, respectively. This is an improvement of 70.8%, 84.1%, 98.2%, and 112.4% over pure RPUF, respectively. It can be seen that with the addition of UC, the carbon residue rate at 800°C is increased, and the later thermal stability of RPUF is improved.