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发明公开
CN100999669A 一种纳米凹土基无机阻燃剂的制备方法 失效 - 权利终止

一种纳米凹土基无机阻燃剂的制备方法
摘要：
本发明为一种以纳米凹土为核体，进行Mg、Al、Sb等表面包覆形成一种复合无机阻燃剂的制备方法。其将纳米凹土水分散体配成固含量10～200g/L的悬浮液，加热至40～100℃，在搅拌的状态下，利用无机阻燃剂对纳米凹土进行无机表面包覆处理，纳米凹土表面包覆物为Al2O3水合物、MgO水合物、氧化锑水合物、ZnO水合物、硼酸锌中的一种、二种或多种，静置，使经无机表面包覆处理的纳米凹土从悬浮液中沉降分离，实现初步的固－液分离；经过板框过滤和洗涤，，将洗涤后的纳米凹土滤饼在80～150℃下干燥；再粉碎，以减轻纳米凹土基无机阻燃剂的团聚程度。本发明制备的米凹土基无机阻燃剂不仅起到阻燃的作用，而且会起到良好的补强作用。
摘要（英）：

The present invention is the preparation process of composite inorganic flame retardant with nanometer attapulgite clay core and coating of Mg, Al, Sb, etc. The preparation process of the composite inorganic flame retardant includes the following steps: compounding water suspension of nanometer attapulgite clay with solid content of 10-200g/L; heating to 40-100 deg.c and coating the nanometer attapulgite clay with inorganic material Al2O3 hydrate, MgO hydrate, antimony oxide hydrate, ZnO hydrate and/or zinc borate via stirring; letting stand for the coated nanometer attapulgite clay to deposit; solid-liquid separation; filtering, washing, drying at 80-150 deg.c and crushing to obtain the composite inorganic flame retardant. The composite inorganic flame retardant of nanometer attapulgite clay has both flame retarding and excellent reinforcing effects.

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