Excessively high foaming ratio (low density)

The product density is lower than the design value, and the cell walls are too thin, resulting in poor mechanical properties. Density differences are evident between different parts of the product, affecting the overall performance consistency of the product.

(1) Process factor: excessive foaming agent; this factor affects the '2079851475616104453 and final quality of the product. (2) Process factor: insufficient melt strength causing excessive expansion of cells; this factor affects the '2079851475616104453 and final quality of the product. (3) Temperature parameter aspect: processing temperature too high causing excessive gas expansion, which may trigger thermal degradation of the material or runaway reaction rate, damaging the internal structure of the product.

(1) Formulation adjustment: reduce the amount of foaming agent, adjust gradually and verify the effect, ensuring that other performance indicators of the product are not affected. (2) Formulation optimization: increase melt strength (such as increasing crosslinking degree or molecular weight), determine the optimal addition amount through small-batch tests, and verify the impact on the comprehensive performance of the product. (3) Process control: control the processing temperature., establish an online monitoring mechanism, set parameter upper and lower limits and implement alarm management. (4) Preventive measures: establish a raw material batch inspection system, regularly sample product density and mechanical properties, and establish quality trend analysis.

The essence of uneven density is inconsistent distribution or densification of the material during the '2079851475616104453; the feeding method and pressure transmission need to be optimized.