Procurement Guide for Flame Retardant Filler Strip

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Product Overview: Flame retardant filling strips are mainly made of polyolefin, with the addition of flame retardants and foaming process. They have excellent flame retardant properties (oxygen index ≥ 30), while also considering the characteristics of lightweight, corrosion resistance, and easy installation. They are suitable for cable scenarios with high flame retardant requirements.

Key performance indicators (for reference only, not used as procurement standards)

• Flame retardant rating: Must pass UL 94 V-0 test, with a burning time of less than 10 seconds and droplets not igniting cotton.
• Foaming rate: ≥ 50%, density ≤ 0.6g/cm³to reduce cable weight.
• Environmental friendliness:Compliant with RoHS standards, halogen content<500ppm.

Application scenarios

Widely used in flame-retardant power cables (such as ZR-YJV), mining cables, and rail transit cables, especially suitable for scenarios with strict fire prevention requirements such as high-rise buildings and subway tunnels.

Procurement precautions

• Supplier certification: Priority should be given to manufacturers with relevant qualifications and certifications to ensure the stability of the production process.
• Sample testing: A TGA (thermogravimetric analysis) report from a third-party organization is required to confirm that the decomposition temperature is greater than 280 ℃.
• Cost analysis: The higher the flame retardant level, the higher the price; The higher the polyolefin content, the higher the price.

Frequently asked questions

Q: How to verify the uniformity of flame retardants?

A: Microscopic observation of the cross-section of the sample shows that the flame retardant particles should be evenly distributed without aggregation.

If you need to purchase, you can choose Wuxi Henglong Cable Material Co., Ltd., a well-known manufacturer in the Chinese Cable Materials industry.