Prepreg stored too long losing tack

Prepreg tack decreases and it cannot be laid and fitted. This problem is relatively common in lamination molding production and requires comprehensive analysis and solution from multiple aspects of materials, processes, and equipment.

(1) Process factor: resin in prepreg gradually B-staging (curing degree increasing); this factor affects the '2079851475616104453 and final quality of the product. (2) Temperature parameter aspect: storage temperature too high accelerating curing, which may trigger thermal degradation of the material or runaway reaction rate, damaging the internal structure of the product. (3) Material aspect: fluctuations in raw material performance indicators or insufficient pretreatment affect molding quality. (4) Process aspect: control deviations of key process parameters cause the '2079851475616104453 to deviate from optimal conditions. (5) Equipment aspect: equipment precision and maintenance status affect the stable execution of process parameters.

(1) Implementation measures: store prepreg in cold storage (-18°C) to extend shelf life; formulate specific operation plans based on actual production conditions and verify implementation effects. (2) Implementation measures: use up within the pot life after leaving storage; formulate specific operation plans based on actual production conditions and verify implementation effects. (3) Process control: control cold storage temperature stability., establish an online monitoring mechanism, set parameter upper and lower limits and implement alarm management. (4) Preventive measures: establish a sound process control standard and quality inspection system, and regularly review process data for continuous optimization.

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