6 Evaluation of rubber used to waterproof, stainless steel pipe fittings Mechanical type. Part 6 About the durable evaluation of the fluorine-contained rubber to ozone water by long-term experiment. Tsutomu NAKAMURA *1 Hiroshi IIZUKA *4 Kyousuke SAKAUE *2 Tomoo INADA *1 Yoshito OHTAKE *5 1 *4 Kazuharu TSUNETO *3 *2 SUGA CO. LTD. NIKKEN SEKKEI Ltd. *5 Meiji University *3 O.N. INDUSTRIES LTD. Chemicals Evaluation and Research Institute, Japan Synopsis; The purpose of this long-term experiment is to confirm the durability of the fluorine-contained rubber to ozone water. Experimentally, using the specimen to have made with fluorine-contained rubber, it made come into ozone water. The item to evaluate is the following 3 items. 1) Change of the outward appearance 2) Change of the physical properties 3) Change of the structure In the long-term experimental result, degradation and the change of the structure were a little with the surface of the specimen confirmed. 1.1 1 1) 2) 3) ED-OW-8-CERI EPDM HNBR 1) 8) EPDM 9) 10 1 1.2 20 10) 40 60 1) 2) 3) 1mg/L 5mg/L 10mg/L 25±2℃ 250±25ml/min 3 4) 1.3 40 60 1) 2) 4) 5) 2 2.5 2mm 6 4 20mm×20mm×2mm 3 2.1 1) HF 500mm/min 6 VH-8000 FT-IR 1) FTS-6000 UMA-500 2) 3) 4) 5) 8.0cm 256 ATR 40℃×24 -1 2) 0.5ml 3.1 3 3) 2 5 1 4) 1,2 1 1mg/L 5mg/L 10mg/L 40 2 1 1 1 60 2 1 1 1 2 3.2 SEM 2.2 SEM 1) 2) 3) 4) JSM-5610V 5kV 500 2000 40℃×24 3-1 3-6 1) 2 3-1 3-3 3) 5) 10° 2.3 1) 2) 3-4 23℃ JIS K 6253-2006 50 23℃ JIS K 6251-2010 50 3-5 3) 2.4 1) 2) 3) T2000 40 3-1 60 1ppm SEM 2000 2-1 5 40 40 3-2 60 5ppm SEM 2000 60 1mg/L A71 5mg/L A71 A72 A71 10mg/L A71 A71 2-2 A72 IRHD/M 5 40 1mg/L 3-3 40 10ppm 60 SEM 2000 60 72.4 72.5 5mg/L 71.7 71.9 10mg/L 72.5 72.3 73.3 3.4 3-1 3-3 1) 2)100 40 3-4 3-1 60 1ppm SEM 2000 MPa 3 40 60 1mg/L 14.1 5mg/L 15.5 14.5 14.1 10mg/L 14.9 13.6 12.0 3-2 3 40 3-5 60 5ppm SEM 2000 40 60 1mg/L 330 5mg/L 350 340 10mg/L 350 340 3-3 350 100 270 MPa 3 40 3-6 40 10ppm 60 SEM 2000 3.3 2-1 2-2 3.5 1) 2) 60 1mg/L 3.85 5mg/L 3.81 3.79 10mg/L 3.73 3.45 3.95 FT-IR 4-1 1) 3.97 4-2 IR -1 1390 1300 1000 800cm -1 1690 -1 -1 1460cm 100 (5) FT-IR -1 2) 1690cm 1460cm TAIC 0.30 1300 1000cm-1 0.25 Absorbance 0.20 1390cm-1 0.15 1460cm-1 0.10 800cm-1 1690cm-1 0.05 1) 0.00 3500 3000 2500 2000 1800 1600 1400 1200 1000 800 Wave number 4-1 IR 1ppm×40 1 pp795 2009 2) 2 0.07 1300 1000cm-1 0.06 pp799 2009 3) 0.05 Absorbance 3 0.04 1390cm-1 1460cm-1 0.03 800cm-1 0.02 pp803 2009 4) 1690cm-1 4 0.01 pp807 2009 0.00 3500 3000 2500 2000 1800 1600 1400 1200 1000 800 Wave number 5 7 4-2 IR 10ppm×60 pp855 2010 6 8 (1) pp859 2010 7) HNBR pp1741 (2) SEM 2011 8) 2 pp1745 2011 9 (3) pp24 2008 10) (4) 3 pp1219 2012
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