1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS M ISO 127 , KOH KS M ISO 127:2008 2008 11 26 http:/www.kats.go.krKS M ISO 127:2008 : ( ) ( ) () () ( ) : (http:/www.standard.go.kr) : : 2003 12 31 : 2008 11 26 2008-0803 : : ( 02-509-7301) (http:/www.kats.go.kr). 10 5 , . KS M ISO 127:2008 , KOH Rubber, n
2、atural latex concentrate Determination of KOH number 2006 (Amendment 1) ISO 127, Rubber, natural latex concentrate Determination of KOH number , . . . , . 1 KOH . . . , , . 2 . . ( ) . KS M ISO 123, KS M ISO 124, , KS M ISO 125, KS M ISO 976, pH KS M ISO 1802, ISO/TR 9272, Rubber and rubber products
3、 Determination of precision for test method standards 3 . 3.1 KOH ( ) 100 g (g) KS M ISO 127:2008 2 (ISO 1382: 1982, Rubber Vocabulary/Add.2: 1982 ) 4 . 4.1 , c(KOH) = 0.1 mol/dm3, 4.2 , c(KOH) = 0.5 mol/dm3, 4.3 1 dm3 45 g50 gc(HCHO) = 1.5 mol/dm31.67 mol/dm3 . 0.1 mol/dm3 (4.1) , . A . 5 . 5.1 pH
4、KS M ISO 976 0.01 . 5.2 pH 12.0 . 5.3 1 . 6 KS M ISO 123 . 7 KS M ISO 976 pH . (wTS) (A) KS M ISO 127:2008 3 , KS M ISO 124 KS M ISO 125 . , KS M ISO 1802 . 2 . 50 g ( m) 0.1 g 400 cm3 . (4.3) , (0.50.1) % . cm3 . )HCHO(134 1)5.0)(100(TScAwm c(HCHO): (4.3) (mol/dm3) 30 % . pH (5.1) pH . pH 10.3 (5.3
5、) 0.5 mol/dm3 (4.2) 5 cm3 . pH . ( 15 ) 0.5 mol/dm3 (4.2) 1 cm3 , pH . . pH 10.3 5 cm3 , “0.5 mol/dm3 (4.2) 1 cm3 ” . cm3 pH . , ( ) ( ) . 1 cm3 . B . 2 5 %(m/m) . 8 KOH . mwVcTS561 c : (4.2) (mol/dm3) V : 0.5 mol/dm3 (4.2) (cm3) wTS : , (%) m : (g) KS M ISO 127:2008 4 KOH KOH . KOH . TSBA91ww wBA:
6、, (%) 9 9.1 ISO/TR 9272 . . 9.2 . / . 9.3 1 . r R 95 % . 9.4 1 , 2001 (ITP) . 2 A B 13 3 . , A, B 1 L . A, B , . ITP 2 . 9.5 1 ITP . 9.6 r( ) 1 . 2 r( ) , ( .) . 9.7 R( ) 1 . 2 R( ) , ( .) . 9.8 (Bias) ( ) . ( ) , . . KS M ISO 127:2008 5 1 KOH srr sRR 0.57 0.007 0.02 0.027 0.08 r = 2.83sr r ( ), sr
7、R = 2.83sR R ( ), sR 10 . a) b) c) pH d) e) , f) g) KS M ISO 127:2008 6 A ( ) . . , (interscience)(1971) (Encyclopaedia of Industrial Chemical Analysis), Vol. 13 . A.1 A.1.1 (sodium sulfide) , A.1.2 (sulfuric acid) , c(H2SO4) = 0.25 mol/dm3 A.1.3 (thymolphthalein) 100 cm3 80 mg 100 cm3 . A.2 (A.1.1)
8、 125 g 500 cm3 1 dm3 . 100 cm3 500 cm3 . 50 g/dm3 (4.3)1)6.0 g8.0 g . 5 (A.1.3) 0.25 mol/dm3 (A.1.2) . . A.3 . 1422110)SOH(2)(03.30mcVV V1 : (A.1.2) (cm3) V2 : (A.1.2) (cm3) c(H2SO4) : (mol/dm3) m1 : (g) 1) , 1.8 g2.0 g . KS M ISO 127:2008 7 B ( ) B.1 pH KOH cm3pH pH/cm3 2pH/cm3 5 6 7 8 9 10 11 12 1
9、3 14 10.09 10.46 10.55 10.65 10.76 10.90 11.08 11.32 11.63 11.93 12.14 0.09 0.10 0.11 0.14 0.18 0.24 0.31 0.30 0.21 0.01 0.01 0.03 0.04 0.06 0.07 0.01 0.09 11 cm312 cm3 0.31 . . , 11 cm312 cm3 0.07/(0.07 0.01) = 0.875, 11.875 cm3 . B.1 . KS M ISO 127:2008 8 B.1 pH (cm3) , KOH 135513 7017 (02)60094114 (02)600948878 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS M ISO 127:2008 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Rubber, natural latex concentrate Determination of KOH number ICS 83.040.10