ASTM D3265-2015 Standard Test Method for Carbon BlackTint Strength《炭黑色调强度的标准试验方法》.pdf
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1、Designation: D3265 14D3265 15Standard Test Method forCarbon BlackTint Strength1This standard is issued under the fixed designation D3265; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parent
2、heses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of the tint strength of carbon black relative to an industry tint reference black(ITRB).1.2 The values stated
3、 in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety an
4、d health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D1799 Practice for Carbon BlackSampling Packaged ShipmentsD1900 Practice for Carbon BlackSampling Bulk ShipmentsD4483 Practice for Evaluating Precision for Test Method
5、Standards in the Rubber and Carbon Black Manufacturing IndustriesD4821 Guide for Carbon BlackValidation of Test Method Precision and Bias3. Summary of Test Method3.1 A carbon black sample is mixed with a white powder (zinc oxide) and a liquid vehicle (soybean oil epoxide) to produce ablack or gray p
6、aste. This paste is then spread to produce a surface suitable for measuring the reflectance of the mixture by meansof a photo-electric reflectance meter. The reflectance of the tested sample is then compared to the reflectance of the ITRB preparedin the same manner. The tint strength of the tested s
7、ample is expressed as units of the reflectance of the ITRB divided by thereflectance of the sample and multiplied by 100, when calibration and standardization in Section 8 is performed with the originalITRB or multiplied by 101.34 when ITRB2 is used in the calibration and standardization step.4. Sig
8、nificance and Use4.1 For the broad range of commercial rubber grade carbon blacks, tint strength is highly dependent upon particle size. Tintstrength can be used as an indication of particle size; however, tint strength is also dependent on structure and aggregate sizedistribution. Therefore, differ
9、ences in tint strength within grades of carbon black may reflect differences other than particle size.NOTE 1This test method was developed primarily for the characterization of N100, N200, and N300 series carbon blacks.4.2 Tint strength values within the carbon black industry have been developed usi
10、ng a HooverAutomatic Muller apparatuswhich is used to prepare carbon black-zinc oxide pastes. A new mixing apparatus, SpeedMixer3 (DAC 150 FVZ), and acorresponding procedure have been extensively studied within D24 and shown to provide equivalent tint strength for all carcassor soft blacks and most
11、tread blacks with the exception of higher surface area N100 types and specialty blacks. Therefore, it is theresponsibility of the user of this alternate apparatus to ensure their products will adequately disperse. Disputes arising between auser and producer should be resolved using the HooverAutomat
12、ic Muller apparatus until ASTM develops adequate precisionstatements.1 This test method is under the jurisdiction of ASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.21 on Carbon Black SurfaceArea and Related Properties.Current edition approved June 1, 2014Jan.
13、 1, 2015. Published July 2014February 2015. Originally approved in 1973. Last previous edition approved in 20132014 asD3265 13a.D3265 14. DOI: 10.1520/D3265-14.10.1520/D3265-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. Fo
14、r Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 SpeedMixer is a registered trademark of FlackTek Inc., 1708 Highway 11, Bldg. G, Landrum, SC 29356. http:/This document is not an ASTM standard and is intended only to provide the us
15、er of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard a
16、s published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.3 The term ITRB is used in the entire text for both, the original ITRB, used as the first reference material for tint test
17、ing, butwhich is now used up, and the successor reference material, ITRB2. Wherever required, like in calculations where it is crucial todifferentiate between the original ITRB and ITRB2, this will be clearly mentioned in the text of the test procedure.5. Apparatus5.1 Analytical Balance, with a sens
18、itivity of 60.1 mg.5.2 Automatic Muller.4,55.3 Photometric Instrument, capable of detecting differences in the amount of light reflectance between shades of gray.6,5 Theinstrument is to be operated following the manufacturers instructions for optimum performance.5.4 Oven, Gravity-Convection Type, ca
19、pable of temperature regulation within 61C at 125C (62F at 257F) and temperatureuniformity within 65C (69F).5.5 Reflectance Standards, as required for each reflectance instrument for checking calibration.5.6 Spatulas, 100 to 150 mm (4 to 6 in.), two, flexible, tapered.5.7 Syringe, 5-cm3, automatic r
20、efilling, reproducible to 60.02 cm3.5.8 Wiping Tissue, absorbent and lint free.5.9 Paste Application ApparatusAny one of the following groups of equipment may be used:5.9.1 Apparatus for Film Drawdown Method:5.9.1.1 Film Applicator,7,5 0.076 mm (0.003 in.) in depth.5.9.1.2 Polished Glass Plate, appr
21、oximately 760 by 500 by 10 mm (30 by 20 by 0.375 in.).5.9.2 Apparatus for Roller Spreader Method:5.9.2.1 Tint Roller Spreader.8,55.10 Desiccator.5.11 SpeedMixer (DAC 150 FVZ), PP15 cups and holder.9,55.12 IKA A-10 Analytical Mill, A-14 SS cutter, A-18 chamber reducer.10,55.13 5 mm Glass Grinding Bea
22、ds.11,56. Reagents and Materials6.1 Purity of ReagentsReagent grade chemicals shall be used in all tests. Unless otherwise indicated, it is intended all reagentsshall conform to the specifications of the Committee on Analytical Reagents of the American Chemical Society, where suchspecifications are
23、available.12 Other grades may be used, provided it is first ascertained that the reagent is of sufficiently high purityto permit its use without lessening the accuracy of the determination.6.2 Industry Tint Reference Black.134 The sole source of supply of the following instruments have been found sa
24、tisfactory for this test method: HooverAutomatic Muller, Model M5, known to the committeeat this time is Hoover Color Corp., P.O. Box 218, State Highway 693, Hiwassee, VA 24347. Automatic Pigment Muller JEL 25/53-II, J. Engelsmann AG, Frankenthaler Str.137 141, 67059 Ludwigshafen, Germany, www.engel
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