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Method for regulating and controlling radial shrinkage of permanent magnetic ferrite
The invention relates to the technical field of permanent magnetic ferrite materials, in particular to a method for regulating and controlling radial shrinkage of permanent magnetic ferrite. The preparation method comprises the following steps: proportioning and ball-milling; preparing a compound non-ionic surface active agent; preparing a mixed solvent; preparing a bio-based surfactant; preparing slurry; and carrying out compression molding and detection. According to the invention, the lauramide propyl dimethyl amine oxide and the triton are compounded to prepare the compound nonionic surfactant, and the interaction force of molecular long chains of the lauramide nonionic surfactant and the sorbitol nonionic surfactant is relatively strong, so that the adsorption behavior of ferrite particles on an oil-water interface can be improved; the interface activity of ferrite particles in an oily system and an aqueous system is improved, the metal particles of the prepared slurry are uniformly distributed, and agglomeration is reduced, so that cavities possibly formed in the sintering process are reduced, and the purpose of controlling the radial shrinkage rate of the permanent magnetic ferrite is achieved.
本发明涉及永磁铁氧体材料技术领域，具体涉及一种调控永磁铁氧体径向收缩的方法。其制备方法包括以下步骤：配料和球磨；制备复配非离子表面活性剂；配制混合溶剂；制备生物基表面活性剂；制备浆料；压制成型及检测。本发明将月桂酰胺丙基二甲基氧化胺和曲拉通复配制备复配非离子表面活性剂，月桂酰胺类非离子表面活性剂和山梨醇类非离子表面活性剂的分子长链相互作用力较强，从而能够改善铁氧体颗粒在油水界面上的吸附行为，提升铁氧体颗粒在油性体系和水性体系中的界面活性，制备的浆料金属颗粒分布均匀，减少团聚，从而减少烧结过程中可能形成的空腔，进而达到控制永磁铁氧体径向收缩率的目的。
Method for regulating and controlling radial shrinkage of permanent magnetic ferrite
The invention relates to the technical field of permanent magnetic ferrite materials, in particular to a method for regulating and controlling radial shrinkage of permanent magnetic ferrite. The preparation method comprises the following steps: proportioning and ball-milling; preparing a compound non-ionic surface active agent; preparing a mixed solvent; preparing a bio-based surfactant; preparing slurry; and carrying out compression molding and detection. According to the invention, the lauramide propyl dimethyl amine oxide and the triton are compounded to prepare the compound nonionic surfactant, and the interaction force of molecular long chains of the lauramide nonionic surfactant and the sorbitol nonionic surfactant is relatively strong, so that the adsorption behavior of ferrite particles on an oil-water interface can be improved; the interface activity of ferrite particles in an oily system and an aqueous system is improved, the metal particles of the prepared slurry are uniformly distributed, and agglomeration is reduced, so that cavities possibly formed in the sintering process are reduced, and the purpose of controlling the radial shrinkage rate of the permanent magnetic ferrite is achieved.
本发明涉及永磁铁氧体材料技术领域，具体涉及一种调控永磁铁氧体径向收缩的方法。其制备方法包括以下步骤：配料和球磨；制备复配非离子表面活性剂；配制混合溶剂；制备生物基表面活性剂；制备浆料；压制成型及检测。本发明将月桂酰胺丙基二甲基氧化胺和曲拉通复配制备复配非离子表面活性剂，月桂酰胺类非离子表面活性剂和山梨醇类非离子表面活性剂的分子长链相互作用力较强，从而能够改善铁氧体颗粒在油水界面上的吸附行为，提升铁氧体颗粒在油性体系和水性体系中的界面活性，制备的浆料金属颗粒分布均匀，减少团聚，从而减少烧结过程中可能形成的空腔，进而达到控制永磁铁氧体径向收缩率的目的。
Method for regulating and controlling radial shrinkage of permanent magnetic ferrite
一种调控永磁铁氧体径向收缩的方法
ZHONG LEILEI (author) / SHEN TUHANG (author) / ZOU QI (author) / TONG LEI (author) / WANG ZINIAN (author) / SUN PENG (author) / LI YUHANG (author) / ZHAO RONGZHI (author) / YANG HANGFU (author)
2024-11-22
Patent
Electronic Resource
Chinese
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