Abstract: The dimensional deformation rate of foam is an important factor for affecting the deformation of the refrigerator door. Taking mold temperature, heat preservation and time as examples, the evaluation model for the influence of the multi-dimensional process parameters on the foam size deformation rate was studied. The model has the ability to qualitatively evaluate the eligibility and change trend of the dimensional deformation rate of polyurethane foam formed by various systems, and the reliability of the qualitative evaluation ability was verified.

Key words: Polyurethane foam, Dimensional deformation rate, Process parameters, Evaluation model, Reliability