S.P. Van Remortel, R.E. Ratcliff, D.D. Kragten, Unimin Corporation01.06.17
Abstract
Nepheline syenite, a durable, commonly employed hard feldspathic, is a crystalline silica-free functional filler used in all types of decorative, industrial, and OEM coating applications. Previous research and mineral processing advancements showed that new ultrafine grades have superior optics at high loadings, contribute to improved mechanical properties, and assist UV curing in aqueous UV-cure clear PUD systems. This paper builds on these previous findings using advanced FTIR techniques to better quantify the contributions that affect UV cure rate. Moreover, this paper demonstrates the ability of ultrafine nepheline syenite to reduce formulation costs by replacing part of the expensive photoinitiators and resins without compromising coating performance.
Introduction
Nepheline syenite is a silica-deficient functional filler and additive widely employed in a variety of polymer-filled coating, adhesive, ink, and colorant applications. Micronized sizes are valued for purity of color, gloss control, ease of dispersion with minimal
Nepheline syenite, a durable, commonly employed hard feldspathic, is a crystalline silica-free functional filler used in all types of decorative, industrial, and OEM coating applications. Previous research and mineral processing advancements showed that new ultrafine grades have superior optics at high loadings, contribute to improved mechanical properties, and assist UV curing in aqueous UV-cure clear PUD systems. This paper builds on these previous findings using advanced FTIR techniques to better quantify the contributions that affect UV cure rate. Moreover, this paper demonstrates the ability of ultrafine nepheline syenite to reduce formulation costs by replacing part of the expensive photoinitiators and resins without compromising coating performance.
Introduction
Nepheline syenite is a silica-deficient functional filler and additive widely employed in a variety of polymer-filled coating, adhesive, ink, and colorant applications. Micronized sizes are valued for purity of color, gloss control, ease of dispersion with minimal
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