Calcined Siliceous Earth Filler is high‑purity calcined siliceous mineral filler serving as direct replacement for Silfit Z91. Designed specifically for powder coating formulations, this mineral extender partially replaces titanium dioxide. It maintains high surface gloss of cured coating film and enhances hardness and scratch resistance, optimizing formulation cost for thermoset powder‑coating production.

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Product Overview Calcined Siliceous Earth Filler (CAS 61790‑53‑2, Silfit Z91 Equivalent) is thermally calcined siliceous earth mineral filler developed for powder‑coating systems. High‑temperature calcination reduces volatile content and modifies particle surface characteristics. When blended into powder‑coating premix during extrusion, the fine mineral powder disperses homogeneously inside the resin matrix. It functions as an effective TiO2 extender to lower formulation cost without sacrificing surface gloss after curing. In addition, the filler improves surface hardness, abrasion resistance and anti‑chipping performance of finished powder‑coating films. This mineral filler is suitable for interior and exterior thermoset powder coating manufacturing.

Key Features ‑ Acts as efficient TiO2 extender for powder‑coating to optimize raw‑material cost ‑ Preserves high‑gloss surface performance of cured powder‑coating film ‑ Enhances coating‑film hardness and anti‑chipping mechanical properties ‑ Low volatile content after calcination, less out‑gassing during powder coating curing ‑ Direct functional equivalent grade for Silfit Z91 powder‑coating mineral filler

Typical Technical Properties ‑ Chemical Type: High‑temperature calcined natural siliceous earth ‑ Appearance: Off‑white fine free‑flowing powder ‑ Particle Size: Refer to TDS ‑ Bulk Density: Refer to TDS ‑ Oil Absorption Value: Refer to TDS

Applications ‑ Interior powder coating: TiO2 extender for household appliance powder coatings ‑ Exterior powder coating: Functional mineral filler for architectural metal profile coatings ‑ Powder coating compounding plant: Raw mineral extender for thermoset powder coating premix ‑ Industrial metal finishing: Gloss‑friendly filler for metal workpiece powder coating formulations

Processing Recommendation Feed calcined siliceous earth filler together with resin, curing agent and pigments before twin‑screw extrusion. Adjust loading percentage to balance gloss level and cost saving. Ensure homogeneous extrusion mixing. Carry out lab formulation and curing trials prior to mass powder‑coating production.

Storage & Handling Store in cool, dry warehouse and protect against moisture. Reseal packaging immediately after opening. Wear dust‑proof mask and protective gloves when handling fine mineral powder.

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Calcined Siliceous Earth Filler CAS 61790-53-2 High-Gloss Powder Coating TiO2 Extender (Silfit Z91 Equivalent)

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.