Title:
METHOD FOR ESTIMATING FRICTIONAL RESISTANCE OF SHIP BOTTOM COATING FILM, AND METHOD FOR EVALUATING COATING FILM PERFORMANCE AND DEVICE FOR EVALUATING COATING FILM PERFORMANCE USING SAID METHOD
Document Type and Number:
WIPO Patent Application WO/2013/153877
Kind Code:
A1
Abstract:
[Problem] To provide a simple method for estimating the frictional resistance increase rate of a ship bottom coating film, the method providing evaluation results rapidly and without individual differences. [Solution] A method for estimating the frictional resistance of a ship bottom coating film characterized in that: according to the stipulations of JIS B 0601: 2001 (ISO 4287: 1997), any of Rz (maximum height roughness), Rc (mean height of roughness curve element), Ra (arithmetic mean roughness), Rq (root mean square roughness), or RZJIS (ten-point mean roughness) is measured as the roughness height R of a coating film of a bottom paint coated on a base material with the mean length RSm of a roughness curve element in the range of 2,000 - 10,000 µm; and the frictional resistance increase rate FIR (%) from a mirror finished surface is calculated using equation (1). (In the formula, the coefficient C is a constant that depends on the variety of the roughness height R and the frictional resistance test method. Roughness measurements at a fixed evaluation length and frictional resistance tests are performed beforehand on multiple bottom paints of differing roughness and C is determined from the relationship in equation (1) for the measured roughness heights R, mean lengths of the roughness curve element RSm, and the frictional resistance increase rates FIR (%).)
Inventors:
MIENO HIROHISA (JP)
Application Number:
PCT/JP2013/055777
Publication Date:
October 17, 2013
Filing Date:
March 04, 2013
Export Citation:
Assignee:
CHUGOKU MARINE PAINTS (JP)
International Classes:
G01N19/02; C09D5/16
Foreign References:
| JP2012007048A | 2012-01-12 | |||
| JPS6239393A | 1987-02-20 | |||
| JP2003530217A | 2003-10-14 | |||
| JPS6044568A | 1985-03-09 |
Other References:
HAYATO SUZUKI ET AL.: "Development of Frictional Resistance Reduction Type Antifouling Paint", DAI 27 KAI TORYO TOSO KENKYU HAPPYOKAI KOEN YOKOSHU, JAPAN COATING TECHNOLOGY ASSOCIATION, 9 March 2012 (2012-03-09), pages 41 - 45
HISAO TANKA ET AL.: "Influence of Surface Properties of Coatings to Frictional Resistance", JOURNAL OF THE KANSAI SOCIETY OF NAVAL ARCHITECTS, JAPAN, NO.239, THE KANSAI SOCIETY OF NAVAL ARCHITECTS, JAPAN, 25 March 2003 (2003-03-25), pages 21 - 27
HISAO TANKA ET AL.: "Influence of Surface Properties of Coatings to Frictional Resistance", JOURNAL OF THE KANSAI SOCIETY OF NAVAL ARCHITECTS, JAPAN, NO.239, THE KANSAI SOCIETY OF NAVAL ARCHITECTS, JAPAN, 25 March 2003 (2003-03-25), pages 21 - 27
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
Patent business corporation SSINPAT (JP)
Patent business corporation SSINPAT (JP)
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