Preparing method of acid-base-resistant black iron oxide

The invention discloses a preparing method of acid-base-resistant black iron oxide. The preparing method comprises the following steps: adopting black iron oxide prepared by a sodium hydroxide oxidation process, directly using an oxidation filter cake not dried, adding 2-3% of polytetrafluoroethylen...

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Bibliographic Details
Main Author WU SHOUTAO
Format Patent
LanguageEnglish
Published 29.04.2015
Subjects
ADHESIVES
CHEMISTRY
DYES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
PREPARATION OF CARBON BLACK
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Summary:The invention discloses a preparing method of acid-base-resistant black iron oxide. The preparing method comprises the following steps: adopting black iron oxide prepared by a sodium hydroxide oxidation process, directly using an oxidation filter cake not dried, adding 2-3% of polytetrafluoroethylene and 0.5-1% of gamma-methacryloxypropyltrimethoxysilane, heating to 70-80 DEG C in a water bath, grinding at a high speed of 2500-3000rpm for 20-30 minutes, taking out, drying, then adding a 95% ethanol solution of which the weight is 2-3 times of that of powder, 4-8% of methyl methacrylate and 0.4-0.5% of silicon carbide, agitating and reacting for 1-2h, filtering, air-drying, washing and drying to obtain a finished product. According to the preparing method, the gamma-methacryloxypropyltrimethoxysilane is used as a color fixing agent, and the acid-base resistance of the black iron oxide is improved through the polytetrafluoroethylene and the silicon carbide.
Bibliography:Application Number: CN20141846801