Insights
How does the whiteness of kaolin affect the color of the final product
Whiteness is one of the most critical commercial indicators of kaolin. It describes the ability…
What grade of kaolin is suitable for paper coating and filling
Kaolin serves two core functions in papermaking: coating pigment for coated‑paper surface coating colour, and…
How does kaolin function as a filler in the rubber industry
Kaolin is one of the most widely used non‑reinforcing and semi‑reinforcing mineral fillers for rubber.…
What is the benefit of using calcined kaolin in wire and cable applications
Calcined kaolin is produced by heating hydrous kaolin at 900‑1050 °C to remove structural hydroxyl groups,…
How does ultrafine kaolin improve the mechanical strength of plastics
Ultrafine kaolin generally refers to kaolin powder with D50 below 2 μm, after grinding, delamination and…
How does particle morphology affect the properties of kaolin in coatings
Kaolin is a layered aluminosilicate mineral widely used as extender pigment in water‑borne and solvent‑borne…
What is the best way to disperse kaolin powder in a polymer matrix
Kaolin is widely used as an inorganic filler for plastics, rubber and composites. However, pristine…
How to test the activation index of surface‑modified kaolin
Activation index is a fast, widely‑used laboratory indicator to evaluate surface‑modification effect of organic‑treated kaolin.…
What are the common coupling agents used for kaolin surface treatment?
Coupling agents are core chemical additives for kaolin surface modification. They build interfacial bridges between…
How does surface modification affect the hydrophobicity of kaolin?
Natural kaolin is an aluminosilicate mineral with abundant hydroxyl groups (−OH) distributed across its particle…
What is flash drying and how is it used for kaolin?
Flash drying, also known as spin‑flash or pneumatic drying, is a continuous, ultra‑short‑residence convective drying…
How to control the moisture content in kaolin powder after drying?
Moisture content is a critical quality indicator for finished kaolin powder. Excess residual moisture will…
