Milky white opacification appears in laminated parts

During curing, the product partially or entirely changes from transparent to milky white. This problem is relatively common in lamination molding production and requires comprehensive analysis and solution from multiple aspects of material, process, and equipment.

(1) Process factor: A large number of microcracks or micro-debonds occur at the resin-glass fiber interface, This factor affects the '2079851475616104453 and final quality of the product. (2) Material pretreatment aspect: Or trace moisture reacts with isocyanate to form urea particles, Moisture vaporizes at high temperature to produce gas or participates in side reactions, causing internal defects in the product. (3) Material aspect: Fluctuations in raw material performance indicators or insufficient pretreatment affect molding quality. (4) Process aspect: Control deviation of key process parameters causes the '2079851475616104453 to deviate from optimal conditions. (5) Equipment aspect: Equipment precision and maintenance status affect the stable execution of process parameters.

(1) Process control: Control the curing exothermic temperature below the resin Tg to avoid interfacial stress cracking, Establish an online monitoring mechanism, set upper and lower parameter limits, and implement alarm management. (2) Process control: Strictly control the moisture of reinforcing materials and resin., Establish an online monitoring mechanism, set upper and lower parameter limits, and implement alarm management. (3) Process optimization: Determine the optimal process parameter window through systematic tests and establish standardized operating procedures. (4) Quality control: Strengthen process monitoring and product inspection, Establish a defect early-warning and traceability mechanism. (5) 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.