Скачать или смотреть 3 things to consider when you do molding of Flame Retardant Polyamides

In today’s video, I’m providing 3 tips for injection molding of flame retardant (FR) Polyamides:
1. Usage of corrosion protected plasticizing unit, hot-runner and tool: some flame retardants are corrosive since they generate acids while reacting with water. Therefore, Polyamides should have a residual moisture of below 0.2%.

2. Limitations in residence time and melt temperature: FR-plastics have a 30-40% lower residence time compared to non-FR plastics. For example, a Polyamide with 25 weight-% glass fiber has a residence time of 15 minutes, where else the FR-Polyamide with 25 weight-% glass fiber has a residence time of 10 minutes.

3. Melt temperature: Furthermore, the preferred melt temperature shall be around 15°C lower compared to the corresponding non-FR reinforced grade.

Enjoy & thanks for watching!
Greetings,
‪@HerwigJuster‬

#polyamide #injectionmolding #flameretardant

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