ASTM D4670-97
(Test Method)Standard Test Method for Polyurethane Raw Materials Determination of Suspended Matter In Polyols
Standard Test Method for Polyurethane Raw Materials Determination of Suspended Matter In Polyols
SCOPE
1.1 This test method covers a procedure for visual inspection to determine the presence of insoluble foreign material in polyols.
1.2 This standard does not purport to address all of the safety problems, if any, associated with its use. 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 . Note-There is no similar or equivalent ISO standard.
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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Designation: D 4670 – 97
Standard Test Method for
Polyurethane Raw Materials: Determination of Suspended
Matter In Polyols
This standard is issued under the fixed designation D 4670; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This test method covers a procedure for visual inspec- 4.1 This test method is suitable as a quality control or
tion to determine the presence of insoluble foreign material in specification test.
polyols.
5. Procedure
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 5.1 Invert a transparent glass bottle containing the sample
and examine by transmitted light for the presence of suspended
responsibility of the user of this standard to establish appro-
matter.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
6. Report
NOTE 1—There is no similar or equivalent ISO standard.
6.1 Report the presence or absence of suspended matter.
2. Referenced Documents
7. Precision and Bias
2.1 ASTM Standards:
7.1 No statement is made about the precision or the bias
D 883 Terminology Relating to Plastics
since this test method merely states whether there is conform-
ance to the criteria for success specified in the procedure.
3. Terminology
3.1 Terminology in this test method is in accordance with
8. Keywords
Terminology D 883.
8.1 polyols; polyurethane raw materials; suspended matter
This test method is under t
...
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FIG. 1 Bored Forgings
Note 1: Sensitivity multiplication factor such that a 10 % indication at the forging bore surface will be equivalent to a 1/8 in. [3 mm] diameter flat bottom hole. Inspection frequency: 2.0 MHz or 2.25 MHz. Material velocity: 2.30 in./s × 105 in./s [5.85 cm/s × 105 cm/s].
FIG. 2 Solid Forgings
Note 1: Sensitivity multiplication factor such that a 10 % indication at the forging centerline surface will be equivalent to a 1/8 in. [3 mm] diameter flat bottom hole. Inspection frequency: 2.0 MHz or 2.25 MHz. Material velocity: 2.30 in./s × 105 in./s [5.85 cm/s × 105 cm/s].
FIG. 3 Conversion Factors to Be Used in Conjunction with Fig. 1 and Fig. 2 if a Change in the Reference Reflector Diameter is Required
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Note 3: The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Specification D3666 are generally considered capable of competent and objective testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with Specification D3666 alone does not completely ensure reliable results. Reliable results depend on many factors; following the suggestions of Specification D3666 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.
SCOPE
1.1 This test method covers procedures for the determination of kinematic viscosity of liquid asphalts, road oils, and distillation residues of liquid asphalts all at 60 °C [140 °F] and of liquid asphalt binders at 135 °C [275 °F] (see table notes, 11.1) in the range from 6 to 100 000 mm2/s [cSt].
1.2 Results of this test method can be used to calculate viscosity when the density of the test material at the test temperature is known or can be determined. See Annex A1 for the method of calculation.
Note 1: This test method is suitable for use at other temperatures and at lower kinematic viscosities, but the precision is based on determinations on liquid asphalts and road oils at 60 °C [140 °F] and on asphalt binders at 135 °C [275 °F] only in the viscosity range from 30 to 6000 mm2/s [cSt].
Note 2: Modified asphalt binders or asphalt binders that have been conditioned or recovered are typically non-Newtonian under the conditions of this test. The viscosity determined from this method is under the assumption that asphalt binders behave as Newtonian fluids under the conditions of this test. When the flow is non-Newtonian in a capillary tube, the shear rate determined by this method may be invalid. The presence of non-Newtonian behavior for the test conditions can be verified by measuring the viscosity with viscometers having different-sized capillary tubes. The defined precision limits in 11.1 may not be applicable to non-Newtonian asphalt binders.
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