Zinc corrosion defect appears in hot-press lamination

White powdery substance appears on the surface of laminates containing zinc fillers/pigments after use in hot and humid environments. This problem is relatively common in lamination molding production and requires comprehensive analysis and solution from multiple aspects of material, process, and equipment.

(1) Material stability aspect: Zinc reacts with acidic substances produced by resin decomposition to form zinc salt precipitates, Molecular chain scission causes an irreversible decline in material properties. (2) Material aspect: Fluctuations in raw material performance indicators or insufficient pretreatment affect molding quality. (3) Process aspect: Control deviation of key process parameters causes the '2079851475616104453 to deviate from optimal conditions. (4) Equipment aspect: Equipment precision and maintenance status affect the stable execution of process parameters.

(1) Material selection: Avoid using zinc-containing fillers, Establish material selection evaluation criteria, and determine the optimal solution through comparative tests. (2) Material selection: Or use acid-resistant treated zinc compounds, Establish material selection evaluation criteria, and determine the optimal solution through comparative tests. (3) Implementation measure: Improve the hydrolysis resistance of the resin., Develop a specific operation plan based on actual production conditions, and verify the implementation effect. (4) Preventive measure: Establish sound process control standards and a quality inspection system, and regularly review process data for continuous optimization.

This problem requires comprehensive analysis from multiple dimensions of material, process, equipment, and operation, and should be solved by systematically optimizing process parameters and the quality control system.