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Technical Support
Material selection for fire-resistant insulation involves trade-offs: fire resistance class against flexibility, temperature against cost, insulation performance against processability. Our technical team supports customers through those decisions.
How we can help
- Recommending a mica grade for a given fire resistance class and temperature
- Advising on tape construction for your taping equipment
- Material behaviour in VPI and resin-rich insulation systems
- Supporting trial production and first-article evaluation
- Interpreting test requirements and standard references
- Failure analysis on insulation that has not performed as expected
Frequently asked questions
Which mica should I choose for a Class A fire-resistant cable?
Synthetic mica tape offers the highest temperature class (950–1000 °C). Phlogopite is usually specified for Class B, as it releases crystal water at around 800 °C.
Can mica tape replace ceramic silicone rubber?
In many fire-resistant cable designs, yes. Mica tape retains dielectric strength under flame, whereas ceramic silicone rubber depends on shell formation and is more environment-sensitive.
Do you provide test reports?
We can support testing through our in-house laboratory and coordinate third-party certification where required.
Speak to an engineer
Email yitian@ncnc.cn with your question, or call +86 10 6378 5597. Including your application, operating temperature and any relevant standard will help us answer precisely.