Unimin
Kysle King, Unimin, presented the company’s milled mined minerals developed as PIN FRs and smoke suppressors. These are based on ATH (aluminium tri hydroxide), a huntite-hydromagnesite mixture and colemanite (calcium borate).
Specific grades include different particle sizes, “low viscosity” (achieved by milling to rounded particles), low surface area, and blended micronised+course (which enables more compact ‘packing’ in the polymer).