A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the technical field of magnetic material preparation, in particular to a ferrite magnetic material and a preparation method thereof.The ferrite magnetic material is prepared from raw materials including ferrite powder and polyvinyl alcohol, and the polyvinyl alcohol is mixed polyvinyl alcohol; the composite material is prepared by mixing more than two kinds of PVAc resin with different polymerization degrees or mixing more than two kinds of polyvinyl alcohol with different polymerization degrees and/or alcoholysis degrees; the invention also comprises a preparation method of the ferrite magnetic material. Compared with a conventional polyvinyl alcohol product, the mixed polyvinyl alcohol prepared by the invention has relatively dispersed molecular weight and alcoholysis degree and relatively dispersed thermal decomposition, so that the prepared ferrite magnetic material has low cracking and damage problems in the calcining process, and the proportion is only 0.8-1.7%; therefore, the qualified rate of the finally prepared ferrite magnetic material product is high and can reach 98.3%-99.2%.
本发明涉及磁性材料制备技术领域，具体为一种铁氧体磁性材料及其制备方法，由包括铁氧体粉料和聚乙烯醇在内的原料制得，所述聚乙烯醇为混合式聚乙烯醇，其由两种以上具有不同的聚合度的PVAc树脂混合制得或由两种以上具有不同的聚合度和/或醇解度的聚乙烯醇混合制得；本发明还包括一种铁氧体磁性材料的制备方法。本发明制得的混合式聚乙烯醇与常规聚乙烯醇产品相比，分子量、醇解度相对分散、热分解相对分散，故而制得的铁氧体磁性材料在煅烧过程中的开裂、破损问题低，占比仅为0.8‑1.7%；所以最终制得的铁氧体磁性材料产品合格率高，可达到98.3%‑99.2%。
The invention relates to the technical field of magnetic material preparation, in particular to a ferrite magnetic material and a preparation method thereof.The ferrite magnetic material is prepared from raw materials including ferrite powder and polyvinyl alcohol, and the polyvinyl alcohol is mixed polyvinyl alcohol; the composite material is prepared by mixing more than two kinds of PVAc resin with different polymerization degrees or mixing more than two kinds of polyvinyl alcohol with different polymerization degrees and/or alcoholysis degrees; the invention also comprises a preparation method of the ferrite magnetic material. Compared with a conventional polyvinyl alcohol product, the mixed polyvinyl alcohol prepared by the invention has relatively dispersed molecular weight and alcoholysis degree and relatively dispersed thermal decomposition, so that the prepared ferrite magnetic material has low cracking and damage problems in the calcining process, and the proportion is only 0.8-1.7%; therefore, the qualified rate of the finally prepared ferrite magnetic material product is high and can reach 98.3%-99.2%.
本发明涉及磁性材料制备技术领域，具体为一种铁氧体磁性材料及其制备方法，由包括铁氧体粉料和聚乙烯醇在内的原料制得，所述聚乙烯醇为混合式聚乙烯醇，其由两种以上具有不同的聚合度的PVAc树脂混合制得或由两种以上具有不同的聚合度和/或醇解度的聚乙烯醇混合制得；本发明还包括一种铁氧体磁性材料的制备方法。本发明制得的混合式聚乙烯醇与常规聚乙烯醇产品相比，分子量、醇解度相对分散、热分解相对分散，故而制得的铁氧体磁性材料在煅烧过程中的开裂、破损问题低，占比仅为0.8‑1.7%；所以最终制得的铁氧体磁性材料产品合格率高，可达到98.3%‑99.2%。
Ferrite magnetic material and preparation method thereof
一种铁氧体磁性材料及其制备方法
2024-01-30
Patent
Electronic Resource
Chinese
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