发明名称 |
Treatment method for making heat exchanger hydrophilic and heat exchanger treated to be hydrophilic |
摘要 |
A treatment method for hydrophilicity for a heat exchanger which can maintain the deodorizing property and hydrohilicity even after a long-time use, and a heat exchanger thus treated for hydrophilicity by said method are provided. After a previous acidic washing treatment, a heat exchanger is subjected to a chemical transformation treatment to form a chemical conversion coating film using a chromium chromate treatment agent, chromium phosphate treatment agent, or treatment agent of zirconium series, followed by a treatment for hydrophilicity using a treatment agent for hydrophilicity, which contains silica particulates and polymer of vinyl alcohol series in aqueous medium in a weight ratio 30:70 SIMILAR 70:30 and in tot al content of 1 SIMILAR 25 weight percent, and in which said silica particulates are coated with said polymer of vinyl alcohol series, and dispersed as coated particles of the average particle diameter of 5 SIMILAR 1000 nm in aqueous medium, to form the coating film so as to amount to 1 SIMILAR 3 g/m<2>. |
申请公布号 |
EP1154042(A1) |
申请公布日期 |
2001.11.14 |
申请号 |
EP20010111547 |
申请日期 |
2001.05.11 |
申请人 |
NIPPON PAINT CO., LTD.;SHOWA DENKO K.K. |
发明人 |
KOJIMA, MASAHIRO;SUDO, TAKASHI;NAKAGAWA, SHINTARO;MATSUKAWA, MASAHIKO;INBE, TOSHIO;YOSHIDA, TATSUO |
分类号 |
B60H1/32;B05D7/00;C09D5/02;C09D129/04;C11D7/08;C11D7/10;C11D7/26;C11D17/00;C11D17/08;C23C22/00;C23C22/24;C23C22/33;C23C22/43;C23C22/78;C23C22/83;F28D17/00;F28F13/04;F28F13/18 |
主分类号 |
B60H1/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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