JP4675657B2 - 圧粉磁心の製造方法 - Google Patents
圧粉磁心の製造方法 Download PDFInfo
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- JP4675657B2 JP4675657B2 JP2005085744A JP2005085744A JP4675657B2 JP 4675657 B2 JP4675657 B2 JP 4675657B2 JP 2005085744 A JP2005085744 A JP 2005085744A JP 2005085744 A JP2005085744 A JP 2005085744A JP 4675657 B2 JP4675657 B2 JP 4675657B2
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- DOBFTMLCEYUAQC-UHFFFAOYSA-N naphthalene-2,3,6,7-tetracarboxylic acid Chemical compound OC(=O)C1=C(C(O)=O)C=C2C=C(C(O)=O)C(C(=O)O)=CC2=C1 DOBFTMLCEYUAQC-UHFFFAOYSA-N 0.000 description 1
- XTBLDMQMUSHDEN-UHFFFAOYSA-N naphthalene-2,3-diamine Chemical compound C1=CC=C2C=C(N)C(N)=CC2=C1 XTBLDMQMUSHDEN-UHFFFAOYSA-N 0.000 description 1
- GOGZBMRXLADNEV-UHFFFAOYSA-N naphthalene-2,6-diamine Chemical compound C1=C(N)C=CC2=CC(N)=CC=C21 GOGZBMRXLADNEV-UHFFFAOYSA-N 0.000 description 1
- RNVCVTLRINQCPJ-UHFFFAOYSA-N ortho-methyl aniline Natural products CC1=CC=CC=C1N RNVCVTLRINQCPJ-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229920005575 poly(amic acid) Polymers 0.000 description 1
- 229920003192 poly(bis maleimide) Polymers 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- WYVAMUWZEOHJOQ-UHFFFAOYSA-N propionic anhydride Chemical compound CCC(=O)OC(=O)CC WYVAMUWZEOHJOQ-UHFFFAOYSA-N 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- GFYHSKONPJXCDE-UHFFFAOYSA-N sym-collidine Natural products CC1=CN=C(C)C(C)=C1 GFYHSKONPJXCDE-UHFFFAOYSA-N 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Soft Magnetic Materials (AREA)
Description
Wh=k2Bm1.6f ……(2)
W=We+Wh=(k1Bm2t2/ρ)f2+k2Bm1.6f ……(3)
本発明の樹脂組成物Aとして、UIP(宇部興産株式会社製 商品名、比重1.39、見かけ密度0.4g/ml、熱分解温度548℃、吸水率0.4%、平均粒径8μmの樹脂粉末)を用意した。また、本発明の樹脂組成物Bとして、KIR−80(京セラケミカル株式会社製 商品名、比重1.39、見かけ密度0.4g/ml、熱分解温度520℃、吸水率0.4%、平均粒径12μmの樹脂粉末)を用意した。さらに、従来の樹脂組成物Cとして、KIR−30(京セラケミカル株式会社製 商品名、比重1.35、見かけ密度0.38g/ml、熱分解温度345℃、吸水率0.4%、平均粒径25μmの樹脂粉末)を用意した。
第1実施例で用いた本発明例の樹脂組成物Aを用い、リン酸塩化合物被膜を表面に施した純鉄粉末に表2に示す配合割合で添加混合して原料粉末となし、これらの原料粉末を、第1実施例と同様に、縦:20mm、横:30mm、厚さ:5mmの試験片形状で密度比:95%になるよう圧粉成形した後、550℃で加熱処理して試料番号20〜28の試料を得た。得られた試料について、第1実施例と同様の条件で各試料の残留応力および磁気特性を測定し、その結果を表2に併せて示した。なお、表2中、試料番号07の試料は第1実施例の試料番号07の値を記載をした。
ポリイミド樹脂として第1実施例で用いた本発明例の樹脂組成物AおよびBを用意した。また、一般式(2)で示されるポリマレイミド樹脂の樹脂組成物Dとしてビスマレイミド−S(三井化学製 商品名)を用意した。これらの樹脂組成物を表3に示す配合割合で混合した樹脂組成物を用い、これらの樹脂組成物をリン酸塩化合物被膜を表面に施した純鉄粉末に1.0質量%を添加混合して原料粉末となし、これらの原料粉末を第1実施例と同様に圧粉成形した後、550℃で加熱処理して試料番号30〜38の試料を得た。得られた試料について、第1実施例と同様の条件で各試料の残留応力および磁気特性を測定し、その結果を表3に併せて示した。また、用意した樹脂組成物についてTG−DTAで5%質量減少開始温度を測定した結果を耐熱温度として併せて表3に示した。なお、表3中、ポリマレイミド樹脂を添加しない場合のものは第1実施例の試料番号07の値を記載をした。
Claims (2)
- リン酸塩化合物被膜を表面に施した軟磁性粉末に、0.01〜2質量%の5%質量減少開始温度が500℃以上の樹脂組成物粉末を混合した粉末混合物を、金型で圧縮成形した後、得られた成形体を400〜580℃で加熱処理するとともに、
前記樹脂組成物粉末が、下記一般式(1)で表されるポリイミド粉末であり、下記一般式(1)において、R1は4価の芳香族基、脂肪族基、または複数の芳香族基、脂肪族基が単結合、−O−、−CO−、−SO2−、−CH2−、−C(CF3)2−で結合された4価の有機基であり、R2は2価の芳香族基、脂肪族基、または複数の芳香族基、脂肪族基が単結合、−O−、−CO−、−SO2−、−CH2−、−C(CF3)2−で結合された2価の有機基であり、そしてnは1以上の整数、であることを特徴とする圧粉磁心の製造方法。
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