GOST ISO 7781-2013 Raw styrene-butadiene rubber Determination of soap and organic-acid content《未加工丁苯橡胶 肥皂和有机酸性含量的测定》.pdf

1、 - (ISO 7781:2008, IDT) , ()INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION(ISC)ISO 77812013, 1.092 . 1.22009 . , - . , , -, 1 160 - , - () - , 42 ()3 , ( 27 2013 . 59-) : ( 3166) 00497 ( 3166) 00497 AMBYKGMDRUTJ -4 ISO 7781:2008 Styrene-butadienerubber, raw Determination of soap

2、 and organic-acid contents (- . - ). SC 2 ISO/ 45 (ISO). (en). , - , , , . -. - . (IDT)5 28 2014 . 250- ISO 77812013 1 2016 .6 II ISO 77812013 -, - . () . , - - , 2014 -, III ISO 778120131 .12 13 .24 25 .26 37 .38 .49 .5 () 6 () 7IV ISO 77812013 - Raw styrene-butadiene rubber.Determination of soaps

3、and organic-acids content - . , . - , , - . , -, , , - . , .1 ( ) - (SBR). A , B pH-. . . - , , - .2 . -().ISO 385 Laboratory glassware Burettes ( . )ISO 648 Laboratory glassware Single volume pipettes ( . - )ISO 1042 Laboratory glassware One-mark volumetric flasks ( . )ISO 1795 Rubber, raw natural

4、and raw synthetic Sampling and further preparative procedures (- . )ISO 4799 Laboratory glassware Condensers ( . )1 ISO 77812013 201601013 , , , , . .4 , . - pH , , (4.6, 4.7 4.8).4.1 () 7 3 . 7 3 , 4 - () . 42.4.2 , 95 3 (4.1) 5 3.4.3 c (NaOH) = 0,1 /3.4.4 0,06 6,45 3 0,02 /3 50 3.4.5 c (HCl) = 0,0

5、5 /3.4.6 pH 73,40(KH2PO4)3,55(Na2HPO4) 1000 3. pH 6,87 - 23 C. . pH 7.4.7 pH 4 10,21 (HOOCC6H4COOK) 1000 3. pH 4,00 23 C. . pH 7.4.8 pH 9 3,814 (Na2B4O7c215 10H2O) 1000 3. pH 9,20 23 C. , - , . . pH 9.5 5.1 , 1 .5.2 .5.3 400500 3.2 ISO 778120135.4 250 3, ISO 1042.5.5 , ISO 4799.5.6 250 3. - .5.7 25

6、3, ISO 385.5.8 100 3, ISO 648.5.9 pH- , - 10 0,1 pH.5.10 , .6 26 ISO 1795. - 2 c180 2 10 5 , - 2 0,001 .7 7.1 (5.3) - 100 3 (4.1) , , - . , , , (4.2)., (), , () , -. (5.5) -1. (5.4) 100 3, 1 . - . () - 10 3, , , 250 3 - . () (. 5.6), 4 - (4.1) , (4.2) .7.2 A 7.2.1 250 3(5.6) 100 3 , (4.4) (4.5) (V1)

7、. 100 3, -, , (V2).7.2.2 , 7.2.1, (4.3) (4.4) (V3). 100 3 , -, (V4).3 ISO 778120137.3 B pH-7.3.1 pH- (5.9) ., , , . pH- , pH 7 (4.6) pH 4 (4.7). 250 3 - 100 3 , - (5.10). . (4.5) pH 4,8, . , (V1). 100 3 , - (V2).7.3.2 pH-, pH 7 (4.6) pH 9 (4.8). 7.3.1, (4.3) pH 11,5, . - , (V3). 100 3 , - (V4).8 8.1 ws,%,ws=025121,( )VVcKmc45s,(1) V1 , , 3;V2 , , 3;c1 (4.5), /3;Ks , , , :- 306,