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    • 4. 发明专利
    • Magnetic sheet
    • 磁性片
    • JP2012212791A
    • 2012-11-01
    • JP2011077804
    • 2011-03-31
    • Tdk CorpTdk株式会社
    • UCHIYAMA RYOTA
    • H05K9/00C08G59/40C08K3/02C08K3/10C08K5/3492C08L63/00
    • PROBLEM TO BE SOLVED: To provide a magnetic sheet that has excellent fire-resistance and is sufficiently suppressed in dimensional variation.SOLUTION: A magnetic sheet contains (A) magnetic powder, (B) (a) acrylic rubber having epoxy groups, (b) phenol aralkyl resin, (c) epoxy resin, (d) hardening accelerator and (e) binder resin obtained by hardening a resin composition containing melamine cyanurate, and (C) red phosphorus. The content of the (C) red phosphorus is 2 to 10 mass% with respect to the total amount of the (B) binder resin and the (C) red phosphorus.
    • 要解决的问题:提供耐火性优异并且在尺寸变化中被充分抑制的磁性片。 (A)具有环氧基的丙烯酸橡胶,(b)苯酚芳烷基树脂,(c)环氧树脂,(d)硬化促进剂和(e)粘合剂 通过硬化含有三聚氰胺氰尿酸酯的树脂组合物获得的树脂和(C)红磷。 (C)红磷的含量相对于(B)粘合剂树脂和(C)红磷的总量为2〜10质量%。 版权所有(C)2013,JPO&INPIT
    • 6. 发明专利
    • R-tm-b-based permanent magnet
    • 基于R-TM-B的永磁体
    • JP2003338419A
    • 2003-11-28
    • JP2003064384
    • 2003-03-11
    • Tdk CorpTdk株式会社
    • UCHIYAMA RYOTAYAMAMOTO TOMOMI
    • H01F41/02
    • PROBLEM TO BE SOLVED: To provide an R-TM-B-based permanent magnet that is excellent in corrosion resistance by improving the adhesion reactivity of the rustproof coating film of the permanent magnet which is nonreactive to an anaerobic acryl-based adhesive. SOLUTION: This R-TM-B-based permanent magnet has a sintered magnet body containing R (composed at least of one kind selected from from the rare- earth elements including Y), TM (a transition element containing Fe as a main component), and boron (B) as a main component and a Cu layer formed on the surface of the sintered magnet body. The surface of the Cu layer is treated with a cyclic nitrogen compound containing two or more nitrogen atoms in its structure so that a chelate of Cu ions and the cyclic nitrogen compound may be formed. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:通过提高对厌氧性丙烯酸类粘合剂无反应性的永磁体防锈涂膜的粘合反应性,提供耐腐蚀性优异的R-TM-B系永久磁铁 。 解决方案:该R-TM-B系永磁体具有包含R(至少从包括Y的稀土元素中选出的至少一种),TM(含有Fe的过渡元素 主成分)和作为主要成分的硼(B)和形成在烧结磁体的表面上的Cu层。 在其结构中用含有两个或更多个氮原子的环状氮化合物处理Cu层的表面,从而可以形成Cu离子和环状氮化合物的螯合物。 版权所有(C)2004,JPO
    • 8. 发明专利
    • Magnetic sheet
    • 磁性片
    • JP2012212790A
    • 2012-11-01
    • JP2011077799
    • 2011-03-31
    • Tdk CorpTdk株式会社
    • UCHIYAMA RYOTA
    • H05K9/00C08G59/40C08K3/10C08K5/3492C08K5/53C08L33/04C08L61/06C08L63/00H01F1/00
    • PROBLEM TO BE SOLVED: To provide a magnetic sheet that has high fire-resistance without any red phosphorus-base and is usable as an electromagnetic wave absorbing sheet or a magnetic converging sheet.SOLUTION: A magnetic sheet contains (A) magnetic powder, (B) (a) acrylic rubber, (b) at least one kind of element selected from the group consisting of phenol resin and phenol aralkyl resin, (c) epoxy resin, (d) hardening accelerator and (e) binder resin obtained by hardening a resin composition containing a compound having a melamine structure, and (C) metal salt of phosphinic acid. The content of the compound having the melamine structure is equal to 25 mass% or more with respect to the total amount of the binder resin, and the content of phosphorus element is equal to 3.0 mass% or more with respect to the total amount of the binder resin and the metal salt of phosphinic acid.
    • 要解决的问题:提供一种具有高耐火性而没有任何红磷基并可用作电磁波吸收片或磁性会聚片的磁性片。 解决方案:磁性片含有(A)磁性粉末,(B)(a)丙烯酸橡胶,(b)选自酚醛树脂和酚芳烷基树脂中的至少一种元素,(c)环氧树脂 树脂,(d)硬化促进剂和(e)通过硬化含有具有三聚氰胺结构的化合物的树脂组合物获得的粘合剂树脂,和(C)次膦酸金属盐。 具有三聚氰胺结构的化合物的含量相对于粘合剂树脂的总量相当于25质量%以上,磷成分的含量相对于总量为3.0质量%以上 粘合剂树脂和次膦酸金属盐。 版权所有(C)2013,JPO&INPIT
    • 9. 发明专利
    • Magnetic sheet
    • 磁性片
    • JP2012199294A
    • 2012-10-18
    • JP2011060955
    • 2011-03-18
    • Tdk CorpTdk株式会社
    • UCHIYAMA RYOTA
    • H05K9/00H01F1/00
    • PROBLEM TO BE SOLVED: To provide a magnetic sheet which has high flame retardancy without using an antimony compound and can be used as an electromagnetic wave absorbing sheet.SOLUTION: The magnetic sheet contains: a magnetic powder; at least one flame retardant aid selected from a group consisting of zinc stannate and zinc hydroxystannate; and a resin composition containing at least one halogen element selected from a group consisting of a chlorine element, a bromine element, and an iodine element. A content of the magnetic powder is 30-50 vol.%.
    • 要解决的问题:提供一种阻燃性高且不使用锑化合物并可用作电磁波吸收片的磁性片。 解决方案:磁片包含:磁粉; 至少一种选自锡酸锌和羟基锡酸锌的阻燃助剂; 以及含有选自氯元素,溴元素和碘元素中的至少一种卤素元素的树脂组合物。 磁粉的含量为30〜50体积%。 版权所有(C)2013,JPO&INPIT