Material Analysis
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PPO Flame Retardant Grade Exudation
Problem Phenomenon
White exudate appears on the surface of PPO flame retardant products, which worsens after storage, affecting appearance and electrical performance.
Cause Analysis
The compatibility between the flame retardant and the matrix is limited, and it migrates and exudes during high-temperature processing or storage; excessively high processing temperature accelerates flame retardant decomposition and migration; a humid environment promotes the appearance of exudate.
Solution
①Control processing temperature to avoid flame retardant decomposition; ②select flame retardant system grades with good compatibility; ③control temperature and humidity of the storage environment; ④analyze the composition of the exudate for traceability.
Key Takeaway
PPO flame retardant grade exudation is a superimposed problem of formulation and process; temperature control is the main means on the processing side; composition analysis locates the exudation source.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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