Flame-Retardant Cenospheres for High-Performance Plastic & Rubber Compounds

Flame-retardant cenospheres are specialized hollow spherical inorganic additives engineered for high-performance plastic and rubber compounds. Refined from high-quality fly ash through advanced purification and surface modification technology, they combine inherent fire resistance with an ultra-low bulk density (0.4–0.6 g/cm³) and a rigid glassy shell, delivering dual benefits of flame retardancy and lightweight reinforcement.

Designed to meet strict fire safety standards, these cenospheres exhibit excellent thermal stability (resisting up to 1000℃) and act as a passive flame retardant—their closed hollow structure inhibits heat transfer and oxygen diffusion, slowing down combustion and reducing smoke emission in plastic and rubber products. They offer superior compatibility with polyethylene (PE), polypropylene (PP), PVC, nylon, and various rubber matrices, ensuring uniform dispersion without compromising material processability (injection molding, extrusion, vulcanization) or mechanical properties (tensile strength, flexibility).

Beyond flame retardancy, they reduce material shrinkage, improve dimensional stability, and enhance wear resistance of plastic/rubber compounds, making them ideal for high-demand applications such as automotive components (wiring harnesses, interior trim), electrical enclosures, construction seals, and industrial gaskets. Eco-friendly (recycled from industrial solid waste), non-toxic, and compliant with ISO 9001/ROHS standards, they provide a cost-effective alternative to traditional halogenated flame retardants, supporting the development of safe, durable, and sustainable polymer products.