ASTM D1824-2016 Standard Test Method for Apparent Viscosity of Plastisols and Organosols at Low Shear Rates《低剪切速率下塑料溶胶和有机溶胶的表观粘度的标准试验方法》.pdf
《ASTM D1824-2016 Standard Test Method for Apparent Viscosity of Plastisols and Organosols at Low Shear Rates《低剪切速率下塑料溶胶和有机溶胶的表观粘度的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D1824-2016 Standard Test Method for Apparent Viscosity of Plastisols and Organosols at Low Shear Rates《低剪切速率下塑料溶胶和有机溶胶的表观粘度的标准试验方法》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D1824 95 (Reapproved 2010)D1824 16Standard Test Method forApparent Viscosity of Plastisols and Organosols at LowShear Rates1This standard is issued under the fixed designation D1824; the number immediately following the designation indicates the year oforiginal adoption or, in the case
2、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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope Scope*1.1
3、This test method covers the measurement of plastisol and organosol viscosity at low shear rates.1.2 Apparent viscosity at high shear rates is covered in Test Method D1823.1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.
4、4 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 and health practices and determine the applicability of regulatorylimitations prior to use.NOTE 1This test met
5、hod resembles ISO 3219-1977 in title only. The content is significantly different.2. Referenced Documents2.1 ASTM Standards:2D1755 Specification for Poly(Vinyl Chloride) ResinsD1823 Test Method for Apparent Viscosity of Plastisols and Organosols at High Shear Rates by Extrusion ViscometerE1 Specific
6、ation for ASTM Liquid-in-Glass ThermometersE691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method2.2 ISO Standard:ISO 3219-1977: Polymers in the Liquid, Emulsified, or Dispersed StateDetermination of Viscosity With a RotationalViscometer Working at a Define
7、d Shear Rate33. Summary of Test Method3.1 The sample is conditioned to the proper temperature and its viscosity is determined.4. Significance and Use4.1 The suitability of a dispersion resin for any given application process is dependent upon its viscosity characteristics.4.2 The viscosity defines t
8、he flow behavior of a plastisol or organosol under low shear. This viscosity relates to the conditionsencountered in pouring, casting, molding, and dipping processes.5. Apparatus5.1 Viscometer.Viscometer, Concentric Cylinder RotationalThe essential instrumentation required providing the minimumrotat
9、ional viscometer analytical capabilities include:5.1.1 A drive motor to apply a unidirectional displacement to the specimen at a rate from 0.5 to 60 r/min constant to 60.5 %.5.1.2 A force sensor to measurement the torque developed by the specimen by the rotational element.5.1.3 A coupling shaft, or
10、other means, to transmit the rotational displacement from the motor to the spindle.1 This test method is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials.Current edition approved Dec. 15, 2010April 1, 2016. Pu
11、blished March 2011April 2016. Originally approved in 1961. Last previous edition approved in 20022010 asD1824 - 95(2002). DOI:10.1520/D1824-95R10.(2010). DOI:10.1520/D1824-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For
12、Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.This document is not an ASTM standard and is intended onl
13、y to provide the user 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 versi
14、onof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1NOTE 2It is helpful to have a mark on th
15、e shaft to indicate appropriate test fluid level.5.1.4 Arotational element, spindle or tool of the right circular cylindrical shape as shown in Fig. 1, to fix the specimen betweenthe drive shaft and a stationary position.NOTE 3The rotational element dimensions L and D, are selected so that the measu
16、red viscosity is between 10 and 90 % of the range of that element.5.1.5 Adata collection device, to provide a means of acquiring, storing, and displaying measured or calculated signals, or both.The minimum output signals required for rotational viscometry are torque, rotational speed, temperature an
17、d time.NOTE 4Manual observation and recording of data are acceptable.5.1.6 A stand to support, level, and adjust the height of the drive motor, shaft and rotational element.5.1.7 Auxiliary instrumentation considered useful in conducting this method includes:5.1.7.1 Data analysis capability to provid
18、e viscosity, stress or other useful parameters derived from the measured signals.5.1.7.2 A level to indicate the vertical plumb of the drive motor, shaft and rotational element.5.1.7.3 Aguard or other method to protect the rotational element from mechanical damage due to contact between the rotation
19、alelement and the container walls.5.2 Sample Containers, Tin Cans, or Glass Jars, 1-pt (500-mL) capacity. Minimum dimensions of containers should be 80-mm(3.15-in.) 500-mL(1-pint) capacity with minimum dimensions of 80 mm (3.15 in.) inside diameter by 80 mm (3.15 in.) deep.depth.5.3 Thermometer, Tem
20、perature Measurement DeviceASTM Solvents Distillation Thermometer having a range from 2to + 52C from 2 to +52C (28 to 126F) and conforming to the requirements for Thermometer 37C as prescribed in SpecificationE1. Use of temperature measuring devices such as liquid-in-glass thermometers, thermocouple
21、s, or platinum resistancethermometers having equivalent or better accuracy and precision, while covering the temperature range of Thermometer 37C.5.4 Timer.FIG. 1 Rotational Spindle ConfigurationD1824 1626. Conditioning6.1 Maintain the plastisol or organosol samples at 23 6 1C (73 6 2F) and 50 6 5 %
22、10 % relative humidity at all times aftermixing and throughout the period of viscosity determinations.7. Procedure7.1 Select a spindle that will read in the middle or upper portion of the viscometer dialindication at the highest rotational speedto be used. Insert the spindle into the sample at appro
23、ximately a 45 angle. Withdraw the spindle and attach it to the viscometer.Taking care not to entrap an air bubble, lower the viscometer to immerse the spindle near the edge of the sample. Move the sampleso as to center the spindle. Adjust its depth to the immersion mark.7.2 Insert the spindle into t
24、he sample at an angle to wet it. Withdraw the spindle and attach it to the viscometer motor.7.3 Taking care not to entrap an air bubble, lower the spindle into the specimen near the edge of the container. Then, adjust thespindle position so that it is centered in the container. Adjust its test speci
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