Insufficient Foaming Ratio (High Density)

The product density exceeds the design value, and foaming is insufficient. Density differences are evident between different parts of the product, affecting the overall performance consistency of the product.

(1) In terms of formula control: insufficient amount of foaming agent or low foaming efficiency, component ratios deviating from design values lead to abnormal chemical reactions or physical states. (2) In terms of temperature parameters: inappropriate foaming temperature causes the foaming agent to not fully decompose/gasify, temperature deviation directly affects the physicochemical state of the material and the reaction progress. (3) In terms of material state: the melt viscosity is too large, limiting cell expansion, abnormal viscosity affects the material's flow filling and impregnation capabilities.

(1) Formula optimization: increase the amount of foaming agent, determine the optimal addition amount through small-batch tests and verify its impact on the comprehensive performance of the product. (2) Design optimization: optimize the foaming temperature to the efficient decomposition range of the foaming agent, combine process simulation analysis or trial mold verification to continuously iterate and improve the design plan. (3) Formula adjustment: appropriately reduce the melt viscosity., adjust gradually and verify the effect, ensuring that other performance indicators of the product are not affected. (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, and the feeding method and pressure transmission need to be optimized.