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Suzorite® Suzorite® mica for improving fire resistance and mechanical properties in rubber compounds

Suzorite® mica is an effective flame retardant extender and ideal all-round multi-functional additive, prized for its reinforcement properties, for increasing HDT and flexural modulus, and for reducing shrinkage and warpage. 


Suzorite® is a platy phlogopite mineral which is chemically inert and provides high thermal stability.

Suzorite® is ideal for replacing ammonium polyphosphate (APP), a halogen-free flame retardant system used in polyolefins.


Loading levels of 30-35% APP are commonly used to meet UL94 requirements such as V-0 ratings.

However, APP is expensive and diminishes physical properties such as tensile strength. Replacing up to one third of APP flame retardant with Suzorite® provides reinforcement, boosting tensile properties and material integrity.


Suzorite® also improves char promotion and afterglow time.   


This combination of properties allows formulators to maintain fire and mechanical performance of plastics in electrical applications.


Suzorite® is ideal for non-color sensitive applications.   For color sensitive applications, please contact us.



We offer a full range of custom formulation and technical and process support services to help you match the right mineral grade to your application requirement.

Please contact us, we will be only too happy to help.

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