Kaolin composite material and preparation method thereof

The invention discloses a kaolin composite material and a preparation method thereof. The preparation method of the kaolin composite material comprises the following steps: adding kaolin into calcium hydroxide solution, and dispersing to form a suspension; controlling the temperature of the suspensi...

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Bibliographische Detailangaben
Hauptverfasser:	LIN RUNHUI, GUO WEI, ZHANG GANXIA, LI RUJI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADHESIVES CHEMISTRY DYES IMPREGNATING OR COATING OF PAPER METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING POLISHES PREPARATION OF CARBON BLACK PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:	The invention discloses a kaolin composite material and a preparation method thereof. The preparation method of the kaolin composite material comprises the following steps: adding kaolin into calcium hydroxide solution, and dispersing to form a suspension; controlling the temperature of the suspension at 3-60 DEG C, adding an additive into the suspension, introducing carbon dioxide, and stirring at the temperature to carry out carbonation reaction; stopping introducing the carbon dioxide when the pH value of the suspension reaches 7.8-8.2, stopping reaction, filtering the suspension, drying and dispersing to obtain the kaolin composite material coated by nano calcium carbonate. The kaolin composite material disclosed by the invention is white, has an open surface and can be used for producing the coating pigment for paper making to obtain the high-whiteness and high-bulk coating layer.