The char-forming agent developed by Weifang Wanfeng Technology is a composite product based on specially treated nano-lamellar materials. It promotes char formation, smoke suppression, and anti-dripping in polymers, and suppresses glowing combustion. It can be used together with flame retardants such as aluminum hydroxide and magnesium hydroxide, forming a coke layer on the polymer surface after combustion to isolate air, block heat transfer, and improve the flame-retardant rating.

1. Introduction

The char-forming agent developed by Weifang Wanfeng Technology is a composite product based on specially treated nano-lamellar materials. It promotes char formation, smoke suppression, and anti-dripping in polymers, and suppresses glowing combustion. It can be used together with flame retardants such as aluminum hydroxide and magnesium hydroxide, forming a coke layer on the polymer surface after combustion to isolate air, block heat transfer, and improve the flame-retardant rating.

2. Main Parameters

3. Usage Recommendations

· Recommended addition: 1.5–2.5% (of total formulation weight).
· The product particles are nanoscale; secondary dispersion (into a masterbatch) gives the best dispersion in the polymer.
· Appropriately increasing the additive amount enhances flame retardancy but affects the melt index; recommended addition should not exceed 2.5%. This additive improves the strength of composite materials but slightly reduces elongation; please adjust the formulation accordingly.

4. Applicable Fields

Suitable for PVC, polyolefins, nylon, epoxy resin, polyester, thermoplastic elastomers, rubber, and other systems.

5. Packaging, Storage & Transportation

1. Protect from moisture during storage and transportation.
2. Double-layer packaging with inner plastic bag and outer plastic woven film-coated bag, 25 kg/bag.