ISO-2322-1996.pdf
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1、INTERNATIONAL STANDARD IS0 2322 Fourth edition 1996-11-01 Styrene-butadiene rubber (SBR) - Emulsion- and solution-polymerized types - Evaluation procedures Caoutchouc butadikne-stykne (SBR) - Types polym - standard materials, standard test formulations, equipment and processing methods for evaluatin
2、g the vulcanization characteristics of emulsion- and solution-polymerized styrene-butadiene rubbers (SBR), including oil-extended rubbers. It applies to those rubbers listed in table 1 which are normally used in vulcanized form. Table 1 - Types of raw styrene-butadiene rubber Rubber Styrene (oil-ext
3、ended or Type of Total content Block content non-oil-extended) copolymer % (m/m) % (m/m) Series A 1) Emulsion SBR random 50 0 2) Solution SBR random 50 0 3) Solution SBR partial block 30 2 Normative references The following standards contain provisions which, through reference in this text, constitu
4、te provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the
5、 standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 37:1994, Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties. IS0 247:1990, Rubber - Determination of ash. Copyright International Organization fo
6、r Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 02:54:04 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 2322: 1996(E) 0 IS0 IS0 248:1991, Rubbers, raw - Determination of volatile-matter
7、content. IS0 289-l :1994, Rubber, unvulcanized - Determinations using a shearing-disc viscometer - Part 7: Determination of Mooney viscosity. IS0 471 :1995, Rubber - Temperatures, humidities and times for conditioning and testing. IS0 17951992, Rubber, raw, natural and synthetic - Sampling and furth
8、erpreparative procedures. IS0 2393:1994, Rubber test mixes - Preparation, mixing and vulcanization - Equipment and procedures. IS0 3417:1991, Rubber - Measurement of vulcanization characteristics with the oscillating disc curemeter. IS0 5725-l :1994, Accuracy (trueness and precision) of measurement
9、methods and results - Part 7: Genera/ principles and definitions. IS0 5725-2:1994, Accuracy (trueness and precision) of measurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method. IS0 6502:-l), Rubber - Introduct
10、ion and guide to the use of curemeters. ISOmR 9272:1986, Rubber and rubber products - Determination of precision for test method standards. IS0 11235:- 1, Rubber compounding ingredients - Sulfenamide-type accelerators - Methods of test. ASTM D 412-92, Test methods for vulcanized rubber and thermopla
11、stic rubbers and thermoplastic elastomers - Tension. ASTM D 1646-95a, Test methods for rubber - Viscosity, stress relaxation, and pre-vulcanization characteristics (Mooney viscometer). ASTM D 2084-93, Test method for rubber property - Vulcanization characteristics using oscillating disk cure meter.
12、ASTM D 3185-88(1994), Test methods for rubber - Evaluation of SBR (styrene-butadiene rubber) including mixtures with oil. 3 Sampling and further preparative procedures 3.1 Take a laboratory sample of approximately 1,5 kg by the method described in IS0 1795. 3.2 Prepare test portions in accordance wi
13、th IS0 1795. 4 Physical and chemical tests on raw rubber 4.1 Mooney viscosity Determine the Mooney viscosity in accordance with IS0 289-l on a test portion prepared in accordance with the preferred method of IS0 1795 (unmilled test portion). Record the result as ML(l + 4) at 100 “C. NOTES 1 If ML(l
14、+ 4) at 100 “C exceeds 100 MU, the small rotor may be used and the result reported as MS(1 + 4) at 100 “C. 2 Alternatively, the Mooney viscosity may be determined on a test portion prepared by the mill massing procedure of IS0 1795. This method will give poorer reproducibility, however, and the resu
15、lts may be different. 4.2 Volatile matter Determine the volatile-matter content by the hot-mill method or by the oven method as specified in IS0 248. 1) To be published. (Revision of IS0 6502:1991) 2) To be published. 2 Copyright International Organization for Standardization Provided by IHS under l
16、icense with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 02:54:04 MDTNo reproduction or networking permitted without license from IHS -,-,- Q IS0 IS0 2322: 1996(E) 4.3 Ash Determine the ash in accordance with method A or method B of IS0 247:1990. 5 Preparation of the
17、 test mixes 5.1 Standard test formulations The standard test formulations are given in table 2. The materials shall be national or international standard reference materials. If no standard reference material is available, the materials to be used shall be agreed by the parties concerned. 5.2 Altern
18、ative formulations for oil-extended types ASTM D 3185 specifies the test formulations given in table 3 for evaluation of general-purpose, oil-extended SBR, according to the oil content of the rubber. These test formulations may be used as alternatives to the test formulations given in table 2. 5.3 P
19、rocedure 5.3.1 Equipment and procedure Equipment and procedure for the preparation, mixing and vulcanization shall be in accordance with IS0 2393. Two alternative mixing procedures are specified: Method A - Mill mixing Method C - Miniature internal mixer mixing NOTE - A method B using an internal mi
20、xer for initial mixing and a mill for final mixing is presented in annex A for information only since insufficient experience has been gained with this method and the absence of information on precision does not allow it to be included as an integral part of the standard. Table 2 - Test formulations
21、 Material Parts by mass Series A Series B Styrene-butadiene rubber (SBR) (including oil in oil-extended SBR) 100,00 - Type 1500 SBR ) - 65,00 Series B SBR - 35,00 Sulfur I,75 1,75 Stearic acid 1 ,oo 1 ,oo Current industry reference black*) 50,oo 35,00 Zinc oxide 3,00 3,00 TBBS3) 1 ,oo 1 ,oo 156,75 1
22、41,75 1) SBR 1500 EST, supplied by Enichem Elastomeri, Strada 3, Palazzo Bl, 20090 Assago, Milan, Italy, is ar example of a suitable product available commercially. This information is given for convenience of users of this International Standard and does not constitute an endorsement by IS0 of the
23、product named. Equivalen products may be used if they can be shown to lead to the same results. 2) Dried for 1 h at 125 “C ? 3 “C and stored in a tightly closed container. 3) N-tert-butylbenzothiazole-2-sulfenamide. This shall be supplied in powder form having an initial insoluble, matter content, d
24、etermined in accordance with IS0 11235, of less than 0,3 %. The material shall be stored a room temperature in a closed container and the insoluble matter shall be checked every 6 months. If this i! found to exceed 0,75 %, the material shall be discarded or recrystallized. 3 Copyright International
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