Injection Molding
11 조회수
Poor processability of PBT flame retardant modification
문제 현상
After adding flame retardants, the melt flowability of PBT decreases and the injection mold filling pressure increases.
원인 분석
The filling amount of flame retardants (such as brominated + antimony trioxide) is large (15-25%), increasing the melt viscosity; some flame retardants have poor thermal stability and decompose at high temperature.
해결 방법
Select high-efficiency flame retardants to reduce the filling amount; appropriately raise the processing temperature; add lubricating dispersants.
핵심 요약
PBT flame retardancy needs a balance between flame retardancy and processability.
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