Manganese-zinc power ferrite composite material and preparation method thereof: Fid-Bau Portal

Manganese-zinc power ferrite composite material and preparation method thereof

GE WEIKANG / WU YONGGANG / WANG KAIWANG

The invention provides a manganese-zinc power ferrite composite material and a preparation method thereof. The manganese-zinc power ferrite composite material is prepared from the following components in percentage by weight: 75%-90% of a manganese-zinc power ferrite material and 10%-25% of a binder composition, the binder composition is prepared from the following components in percentage by weight: 10%-15% of polyformaldehyde resin, 2%-5% of high-density polyethylene, 0.5%-1.5% of a polyethylene octylene co-elastomer, 0.2%-0.5% of ethylene bis-stearamide, 1%-3% of zinc stearate and 1%-3% of dioctyl phthalate. The injection molding performance of the manganese-zinc power ferrite composite material is improved by regulating and controlling the composition of the binder and improving the process conditions, so that the manganese-zinc power ferrite composite material has high magnetic induction intensity (Bs), low power loss (Pc) and good mechanical strength.

本发明提供一种锰锌功率铁氧体复合材料及其制备方法。所述锰锌功率铁氧体复合材料是由以下重量百分比的组分制得：锰锌功率铁氧体材料75％～90％和粘结剂组合物10％～25％；所述粘结剂组合物是由以下重量百分比的组分组成：聚甲醛树脂10％～15％、高密度聚乙烯2％～5％、聚乙烯辛烯共弹性体0.5％～1.5％、乙烯基双硬脂酰胺0.2％～0.5％、硬脂酸锌1％～3％和邻苯二甲酸二辛酯1％～3％。本发明通过调控粘结剂的组成和改善工艺条件，使得锰锌功率铁氧体复合材料的注射成型性能得以提高，从而保证了其兼具高磁感应强度(Bs)、低功率损耗(Pc)和良好的机械强度。

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