ASTM D3848-2003(2013) Standard Test Methods for RubberEvaluation of NBR &40 Acrylonitrile-Butadiene Copolymers&41 Mixed With Carbon Black《碳黑混合的NBR(丙烯腈共聚物橡胶)橡胶评估的标准试验方法》.pdf
《ASTM D3848-2003(2013) Standard Test Methods for RubberEvaluation of NBR &40 Acrylonitrile-Butadiene Copolymers&41 Mixed With Carbon Black《碳黑混合的NBR(丙烯腈共聚物橡胶)橡胶评估的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D3848-2003(2013) Standard Test Methods for RubberEvaluation of NBR &40 Acrylonitrile-Butadiene Copolymers&41 Mixed With Carbon Black《碳黑混合的NBR(丙烯腈共聚物橡胶)橡胶评估的标准试验方法》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D3848 03 (Reapproved 2013)Standard Test Methods forRubberEvaluation of NBR (Acrylonitrile-ButadieneCopolymers) Mixed With Carbon Black1This standard is issued under the fixed designation D3848; the number immediately following the designation indicates the year oforiginal adoption or, i
2、n the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 These test methods specify the standard materials, testformula, mixing procedures,
3、 and test methods for the evalua-tion of acrylonitrile-butadiene rubber (NBR) mixed with car-bon black.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns,
4、 if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D412 Test Methods for Vulcanized Rubber and
5、Thermoplas-tic ElastomersTensionD1646 Test Methods for RubberViscosity, StressRelaxation, and Pre-Vulcanization Characteristics(Mooney Viscometer)D2084 Test Method for Rubber PropertyVulcanizationUsing Oscillating Disk Cure MeterD3182 Practice for RubberMaterials, Equipment, and Pro-cedures for Mixi
6、ng Standard Compounds and PreparingStandard Vulcanized SheetsD3896 Practice for Rubber From Synthetic SourcesSamplingD4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustriesD5289 Test Method for Rubber PropertyVulcanizationUsing Rotorles
7、s Cure MetersD6204 Test Method for RubberMeasurement of Unvulca-nized Rheological Properties Using Rotorless Shear Rhe-ometers3. Significance and Use3.1 These test methods are mainly intended for refereepurposes but may be used for quality control of rubberproduction. They may also be used in resear
8、ch and develop-ment work and for comparison of different samples in astandard test formula.3.2 These test methods may also be used to obtain values forcustomer acceptance of rubber.4. Standard Test Formula4.1 Standard Formula:IRM/SRMSRM Quantity, PartsMaterial No. By MassMasterbatch . 100.00 + XAZin
9、c oxideB3.00Sulfur, coatedC. 1.50Stearic acidB1.00TBBSDB0.70 + XTotal mass 106.20 + XBatch factorsMillEMiniature internal mixerFAX = parts carbon black per 100 parts base polymer.BUse current IRM/SRM.CThe use of 2 % MgCO3coated sulfur is recommended. Standard 2 % MgCO3coated sulfur Lot No. M266573-P
10、 is available from C. P. Hall Co., 4460 HudsonDrive, Stow, OH 44224.DN-tert-butyl-2-benzothiazolesulfenamide.EFor mill mixing, a batch factor should be selected to the nearest 0.5 to give aslarge as total mass as possible that will not exceed 525.0 g. Calculate all parts tothe nearest 0.01 part. Wei
11、gh the masterbatch to the nearest 1 g, the sulfur and theaccelerator to the nearest 0.02 g, and all the other compounding materials to thenearest 0.1 g.1These test methods are under the jurisdiction of ASTM Committee D11 onRubber and are the direct responsibility of Subcommittee D11.23 on SyntheticR
12、ubbers.Current edition approved Nov. 1, 2013. Published January 2014. Originallyapproved in 1980. Last previous edition approved in 2009 as D3848 03 (2009).DOI: 10.1520/D3848-03R13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.or
13、g. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1FFor MIM mix, select a batch factor to give a batch that will fill
14、 the mixing chambervolume to 75 % capacity. Calculate all parts to the nearest 0.1 g, the compoundingmaterial blend to the nearest 0.01 g, and the individual compounding materials, ifused, to the nearest 0.001 g.For the MIM procedure, it is recommended that a blend of compoundingmaterials be prepare
15、d to improve accuracy in the weighing of the materials. Thecompound material blend is prepared by blending a proportional mass of eachmaterial in a biconical or a vee blender. A mortar and pestle may be used forblending small quantities.5. Sample Preparation5.1 Obtain and prepare the test samples in
16、 accordance withPractice D3896.6. Mixing Procedures6.1 Three mixing procedures are provided as follows:6.1.1 Method AMill Mix (6.2) and6.1.2 Method BMiniature Internal Mixer Mix (6.3).6.1.3 Method CInternal MixerNOTE 1It is not implied that comparable results will be obtained bythese test methods.6.
17、2 Method AMill Mix Procedure:6.2.1 For general mixing procedures, refer to PracticeD3182.6.2.2 Mixing CycleInitial Mix:Accu-Dura- mula-tion, tive,min min6.2.2.1With the mill roll temperature set at 50 5C(122 9F) and the mill opening set at 1.40mm (0.055 in.), band the masterbatch on theslow roll wit
18、hout cutting.226.2.2.2Add sulfur slowly and evenly across the millat a uniform rate.246.2.2.3Add stearic acid. Make one34 cut from eachside after the stearic acid has beenincorporated.266.2.2.4Add the zinc oxide and the accelerator. 3 96.2.2.5Make three34 cuts from each side and cutthe batch from th
19、e mill.2116.2.2.6Set the rolls at 0.8 mm (0.032 in.). Pass therolled batch endwise through the mill six times.2136.2.2.7Open the mill to give a minimum batchthickness of 6 mm (0.25 in.) and pass the stockthrough the mill four times, folding it back onitself each time.1146.2.2.8Check the batch mass a
20、nd record. If it differsfrom the theoretical value by more than 0.5 %,discard the batch.6.2.2.9From this batch cut a sample for testing ofcompound viscosity in accordance with TestMethods D1646 or rheological properties in ac-cordance with Test Method D6204, vulcanizingcharacteristics in accordance
21、with Test MethodD2084, or Test Method D5289, or both, if theseare desired. Condition the sample for 1 to 24 hat 23 2C (73.4 3.6F) before testing.6.2.2.10If tensile stress is required, sheet off thecompound from the mill at a setting to give afinished gage of approximately 2.2 mm (0.085in.) by passin
22、g the folded stock between therolls set at 50 5C (122 9F) four timesalways in the same direction to obtain theeffect of milling. Cool on a flat, dry metalsurface.6.2.2.11For routine laboratory testing, condition thesheeted compound for 1 to 24 h at 23 2C(73.4 3.6F) and a relative humidity notgreater
23、 than 55 %. For maximum precision,condition for 1 to 24 h in a closed container toprevent absorption of moisture from the air orin an area controlled at 35 5 % relativehumidity.6.3 Method BMiniature Internal Mixer (MIM) Procedure:6.3.1For general mixing procedures, refer toPractice D3182. Mix with t
24、he MIM mixingchamber maintained at 60 3C (140 5F)and with an unloaded rotor speed of 6.3 to 6.6rad/s (60 to 63 rpm).6.3.2Prepare the masterbatch by passing itthrough a mill one time with the temperatureset at 50 5C (122 9F) and an opening of0.5 mm (0.02 in.). Cut the sheet into strips thatare approx
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