Advanced Melt Flow System. The 6MPCA is the most advanced digital model offered within the Ray-Ran range of melt flow index testers. The operating. Find the most up-to-date version of ASTM D at Engineering ASTM D(). Standard Test Method for Flow Rates for Poly(Vinyl Chloride) with Molecular Structural Implications. standard by ASTM.
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If charging time is greater than 1 min, clean out the instrument and repeat the procedure. When charging is complete, pack down the PVC with the phenolic-coated charging tool by repeated thrusts.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. As a guide, each specimen should be about 20 to 30 mm long.
ASTM D Flow Rates for Poly Vinyl Chloride – Instron
It may be necessary to reshape the d364 of the cutoff tool to obtain the best results. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
Pass the tip of the spatula upward along one side of the beveled hole, lightly across the bottom of the ori? NOTE 4—A positive instability probably indicates that crosslinking is occurring. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. Correlations with a wide range of processing astn have supported the conclusions that little or no change in composition occurs during the test. Fluctuations aastm and down repeatedly during a run can indicate nonuniform mixing or a bad charging technique. The quantity of material introduced into the d334 is 2. Bluehill LE for Basic Testing.
Report as percent PVC instability. Viscosity Shear Rate 1?
However, as a one-point measure of flow relative to shear rate, its one drawback is that the same PVC melt flow values can be obtained for materials having different processibility; the chance of this happening ashm minimized, however, if the compounds are similar in composition. These changes are due to three types of measured instability in polymers: This statement further de? How can we help you? WaveMatrix 2 for Dynamic Testing. This weight is effective for all semirigid PVC and even some nonrigid compounds.
The instrument is now ready for the next test. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The value for the instability will then be positive or negative.
The dimensions of the regular die are shown in Fig. If you feel that your comments have not s3364 a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
ASTM D3364 Flow Rates for Poly Vinyl Chloride
Originally published as D — Rheological instability due to nonuniform distributions of widely different viscosity or molecular weight elements. For each material, all the samples were prepared at one source, but the individual specimens were prepared at the laboratories which tested them.
Software for Series Systems. The cause of this unstable condition should be studied and understood. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Do not use the? Note 1—There qstm no known ISO equivalent to this standard.
Since Q is the volumetric? Each laboratory obtained three test results for each material. The data in Table 3 should not be rigorously axtm to acceptance or rejection of material, as those data are speci?
ASTM D3364 – 99(2011)
The entire time of charging and positioning of weights should take no longer than 1 min and preferably less than 1? Many PVC compounds are elastic in nature, causing a severe loss in pressure from the bottom of the piston through the material to the ori? In addition to the properties mentioned in Test Method Dthis technique is sensitive to plasticizer content, polymer molecular weight, polymer stability both thermally and rheologicallyshear instability, and general composition.
This test is specific to the measurement of Melt Flow Rates MFR or MFI of poly vinyl chloride compounds while detecting and controlling various polymer instabilities associated with the xstm rate. Concrete, Asphalt and Rock.