D Standard Practice for Rubber—Standard Conditions for Testing standard temperature~ interlaboratory 2, $ Standard + Redline PDF Bundle. Apr 6, This standard is issued under the fixed designation D ; the number ASTM International takes no position respecting the validity of any. download ASTM D Standard Practice for Rubber-Standard Temperatures for Testing from SAI Global.
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Sep 9, D Practice for Rubber—Standard Temperatures for 1 These test methods are under the jurisdiction of ASTM Committee D11 on. astm d pdf nomenclature. 2. 45, and a durometer of less than about 60 per ASTM D Type A. Home; News & Analysis. Download with Google. News · SIGN IN / REGISTER. Back. Standards PDF Cover Page Document preview. Historical. ASTM D Content Provider ASTM International [ ASTM].
Last previous edition approved in as D Diameter, mm in. For such cases, the product specification be rotated in a drill press or similar device and lubricated by should define the specimen as to the size and shape. If suitable means of a soap solution. A minimum distance of 13 mm 0.
The cutting pressure shall be as light as producer and the downloadr. Method A 5.
NOTE 2It is suggested, for the purpose of uniformity and closer tolerances in the molded specimen, that the dimensions of the mold be 6. Conditioning specified and shrinkage compensated for therein. A two-plate mold with a 6. When the mm 1. A similar mold after delivery by the producer of the article represented by the but having a cavity of 6.
Specimens whose compression thickness than the one indicated in 5. Precision and Bias 4 plying up cylindrical disks cut from a standard sheet prepared 7. Please refer to Practice D specified in 5. A and B were supplied to five laboratories.
These were tested 5. A test result, thickness required. Such plies shall be smooth, flat, of uniform therefore, is the average of two test specimens, for both Test thickness, and shall not exceed seven in number for Type 1 Methods A and B. Reference values do not exist for these test methods since the value or level of the test property is exclusively defined by the test method. Bias, therefore, cannot be determined.
Loading, Test Method A 8. The force may be applied in accordance with either means after the test specimen is mounted in the apparatus.
ASTM Standards on Rubber Products
Either a calibrated compression machine or known masses may 8. Provision shall be made by the force shall be applied by a screw mechanism for compressing use of bolts and nuts or other devices to prevent the specimen a calibrated spring the proper amount. The spring shall be of and spring from losing their initial deflections when the properly heat-treated spring steel with ends ground and per- external force is removed.
The spring shall have essentially the pendicular to the longitudinal axis of the spring. A suitable same characteristics as described in 8. The spring shall required. A suitable compression device is shown in Fig. The have a chromium plated finish and shall be cleaned thoroughly curve obtained by plotting the forces against the corresponding and wiped dry before each test.
The test specimen can be a thermoplastic elastomer such as a thermoplastic vulcanizate TPV , a styrenic blocked copolymer SBC , a copolyester, a thermoplastic polyurethane, a thermoplastic polyole?
A timed test may also be performed in which a sinusoidal strain is applied for a given time period under constant strain amplitude, frequency and temperature conditions.
For a strain sweep test, the instrument is usually programmed to increase the strain amplitude with each subsequent step change. This is done to minimize the in? For temperature sweeps, the temperature may be programmed either to increase or decrease with each subsequent step change, depending on the effects to be studied. The results from increasing frequency, strain amplitude or temperature may not be the same as results from decreasing these test parameters.
These polymer melt viscoelastic properties may relate to factory processing behavior while the dynamic properties of the respective congealed specimen may relate to product performance.
This method may also be used for evaluating processing and product performance differences resulting from the use of different compounding materials and process conditions in the making of these thermoplastic elastomers. Apparatus 6. In the measuring position, the two dies are? The die gap for these parallel plate dies shall be set at 2.
ASTM D395 TESTING FIXTURE
The oscillation frequency can be varied between 0. The total error resulting FIG. The torque shall be recorded with an accuracy of Torque recording devices may include analog chart recorders, printers, plotters, or computers. A torque standard may be used to calibrate the torque measuring system at the selected angular displacement by clamping a steel torsion rod to the oscillating and the torque measuring dies of the torsion shear rheometer see Fig.
The reference values for angular displacement and corresponding torque shall be established by the manufacturer for each torque standard. For example, measurements of the rheology of the polymer melts of thermoplastic vulcanizates based on EPDM rubber and polypropylene are commonly tested at ?
C with dynamic property measurements of the congealed specimen performed at 60? For styrenic blocked copolymer thermoplastic elastomers, measurements of the polymer melts are performed at ?
For thermoplastic vulcanizates based on polyacrylate rubber and nylon, measurements of the polymer melts are performed at ?
Tests may be carried out at other temperatures if required. Apparatus described in 6. A scale or other device shall be provided for distance of at least mm 30 in. If the capacity range cannot be changed for a test 7. If the dynamometer is of the compensating type influence on tensile properties, dumbbell or straight specimens for measuring tensile stress directly, means shall be provided to should be cut so the lengthwise direction of the specimen is 2 D — 06a FIG.
For obtaining non-rupture stress-strain or material moplastic elastomer specimens, or both, are to be cut from modulus properties, straight specimens are quite useful. Specimens of other thickness will not necessarily give the material, test equipment and the sample or piece available comparable results.
Specimens are to be tested in directions for test. A longer specimen may be used for rubbers having low both parallel and perpendicular to the direction of flow in the ultimate elongation to improve precision of elongation mea- mold.
Sheet or plaque dimensions must be sufficient to do this. Calibration of the Testing Machine the ring specimens is not uniform. To minimize this effect the 8. If the dynamometer is of the diameter. Apparatus grip of the testing machine. The inside faces in the reduced section shall be in the upper grip. The die shall at all times be sharp and free of 8.
Remove framework or holder see Note 3. Rupture consistently at the same place indicates that the die may be dull, nicked, or bent at that location.
The bench marker shall consist of a base and other moving parts. Ensure that the mass of the lower grip plate containing two raised parallel projections. The surfaces of mechanism and the hook are included as part of the known the raised projections parallel to the plane of the base plate mass. The raised projection 8.
The distance between the routine testing, use them for calibration. Check for friction in centers of the two parallel projections or marking surfaces shall the head by calibrating with the pawls up. A handle attached to the back or top of the bench marker base NOTE 3—It is advisable to provide a means for preventing the known mass from falling to the floor in case the dumbbell should break.
Test Temperature metal, or plastic shall be used to apply either ink or powder to 9.
If the material is affected by moisture, maintain the When testing at any other Constant pressure pneumatic type grips also Method B. Place each specimen in the test chamber at intervals are satisfactory. At the end of each grip a positioning device is ahead of testing so that all specimens of a series will be in the recommended for inserting specimens to the same depth in the chamber the same length of time.
The preheat time at elevated grip and for alignment with the direction of pull. Dies dimensioned in metric units are intended for use with apparatus calibrated in metric units. B For dies used in clicking machines it is preferable that this tolerance be B For dies used in clicking machines it is preferable that this tolerance by Specimens the mass, length, and density of the specimen may be required.
Whenever possible, the test specimens shall be injection surements as follows: molded or cut from a flat sheet not less than 1. In the case of sheets Procedure prepared in accordance with Practice D , the specimen Use Die C, Fig. This avoids complications that prevent the maximum Unless otherwise mens shall be marked with the bench marker described in Marks 20 6 2 in.
Start the machine and note the shall be placed on the reduced section, equidistant from its distance between the bench marks, taking care to avoid center and perpendicular to the longitudinal axis. The between parallax. Record the force at the elongation s specified for the bench mark distance shall be as follows: for Die C or Die D of test and at the time of rupture.
The elongation measurement is Fig. At rupture, See Three measurements shall be made for the thickness, one at the Section 13 for calculations.
The width be reduced to 5 6 0. The actual rate of separation shall be reported. Sepa- narrow electrical insulation material. These specimens shall be rate the grips at a rate of speed as uniformly as possible, that of sufficient length to permit their insertion in the grips used for requires 15 s to reach the specified elongation. Hold the the test. Bench marks shall be placed on the specimens as specimen at the specified elongation for 10 min, release described for dumbbell specimens in To determine the quickly without allowing it to snap back and allow the cross sectional area of straight specimens in the form of tubes, specimen to rest for 10 min.
At the end of the 10 min rest 6 D — 06a period, measure the distance between the bench marks to the Use individual test measurement values for any of the measured a stop watch for the timing operations. See Section 13 for properties as described above, for routine testing. There are calculations.Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Unless otherwise calculated according to Eq 1 and Eq 2.
A similar mold after delivery by the producer of the article represented by the but having a cavity of 6. Permission rights to photocopy the standard may also be secured from the ASTM website www.
Summary of Test Methods compressive stresses in air or liquid media. The spring shall have essentially the pendicular to the longitudinal axis of the spring. When the mm 1. For this testing, uncured com- in. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
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