稀土磁性塑料注射成型技术研究  

Study on Injection Molding of Rare-Earth Plastic Magnets

作　　者：宋大余[1] 刘颖[1] 叶金文[1] 涂铭旌[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610064

出　　处：《塑料工业》2005年第4期23-26,共4页China Plastics Industry

摘　　要：应用HAAKE转矩流变仪,研究了尼龙6质量分数为7%时,稀土磁性塑料的加工工艺性能。结果表明:稀土磁性塑料喂料体系的润滑剂能有效地降低喂料熔体流动粘度,改善加工条件;而偶联剂会恶化其加工性能;磁粉的粒径分布对原料的粘度和加工工艺有明显的影响,3 5～65 μm的磁粉粒度有利于成型加工;制得了较好综合性能的稀土钕铁硼塑料磁体。The processability of rare-earth magnetic mat erials with 7 wt% PA6 was studied by using HAAKE torque rheometer.The results s howed that the use of the lubricant for the loading system could decrease the vi scosity and improve the molding conditions effectively,whereas the use of coupli ng agent functioned in reverse.The distrib ution of powder sizes obviously affect ed the blends viscosity and processability ,the optimum size particle diameter wa s 35-65μm;NdFeB plastic magnets with bette r c omprehensive properties were manufactured .

关 键 词：磁性塑料 注射成型技术 稀土 转矩流变仪 质量分数 工艺性能 熔体流动 加工条件 加工性能 加工工艺 粒径分布 成型加工 塑料磁体 综合性能 尼龙6 润滑剂 偶联剂 钕铁硼 粘度 喂料 磁粉 

分 类 号：TM27[一般工业技术—材料科学与工程]