Fireproof expanded vermiculite with water absorption performance and preparation method thereof: Fid-Bau Portal

Fireproof expanded vermiculite with water absorption performance and preparation method thereof

XUE YONGGANG / ZHAO YANLI

The invention relates to fireproof expanded vermiculite with water absorption performance and a preparation method thereof. The preparation method comprises the following steps: (1) carrying out incomplete expansion calcination on vermiculite; (2) uniformly stirring an acrylic monomer, sodium hydroxide, an acrylamide monomer, an initiator potassium persulfate, a crosslinking auxiliary pentaerythritol polyglycidyl ether, incompletely expanded vermiculite and water, performing ultrasonic dispersion to obtain a first reaction solution, and putting the first reaction solution in a reaction kettle for reaction to obtain a gel substance; and (3) carrying out primary crushing and drying on the gel substance, then carrying out further crushing in a ball mill, and then carrying out surface cross-linking modification to obtain the fireproof expanded vermiculite with water absorption performance.

一种具有吸水性能的防火型膨胀蛭石及其制备方法，包括如下步骤：(1)对蛭石进行不完全膨胀煅烧；(2)取丙烯酸单体、氢氧化钠、丙烯酰胺单体、引发剂过硫酸钾、交联助剂季戊四醇聚缩水甘油醚、不完全膨胀蛭石、水，搅拌均匀并进行超声分散，得到第一反应溶液，并置于在反应釜中反应得到凝胶物质；(3)将凝胶物质进行初步破碎干燥，然后在球磨机中进行进一步粉碎，再进行表面交联改性，得到具有吸水性能的防火型膨胀蛭石。

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