ASTM D Standard Test Methods for Pressure-Sensitive Adhesive- Coated Tapes Used for_化学_自然科学_专业资料。ASTM D ASTM D – Standard Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for Electrical and Electronic Applications. ASTM D – Standard Test Methods for Pressure-Sensitive Adhesive- Coated Tapes Used for Electrical and Electronic Applications. This standard is a part.
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ASTM D – Unwind Force of Tapes
Check the zero reading on the scale. If the strip of tape is wider than 14 mm 9? In use, variations in axtm width will produce varying results due to change in relative edge area for solvent action. Discard the gauze after each cleaning step. This standard has been approved for use by agencies of the Department of Defense.
Open the jaws of the calipers and slide them over the cut edges of the tape so that the scale shaft is parallel to the table. Use clean steel plates. Remove each specimen from the roll in accordance with 5. Attach a weight as required by the nominal thickness to the lower end of the tape. Note that the use ast different width tape specimens with the same unit loading has the potential to lead to signi?
From this tape material, prepare specimens as required in the individual test methods.
It is essential that the test apparatus, and all associated equipment electrically connected to it, be properly designed and installed for safe operation. This unwind force is useful as a measure of the effects of natural, shelf or accelerated aging, and the unwind force determined at the fast rate of removal is useful as a measure of the ease of unwinding in mechanized or hand dispensers.
Rods of other diameters are acceptable if agreed upon between the manufacturer and the purchaser. D — 10 wind-up roll that can be used to either manually or automatically unwind the roll of tape.
Method A—Fast Rate of Removal Immediately test the specimen to prevent misleading results due to drying of the sample. Breaking Strength and Elongation at Low Temperatures.
At the end of this period, measure the length of the? Except for determination of length of tape in a roll, remove and discard a minimum of three layers before removing tape for preparation of test specimens. Method A—Balance Method Cut the tape with a sharp razor blade or scissors, unless otherwise speci? Place the tape in the center of the drums with the edges parallel to the scribed lines. Approved October 15, 1 Revised Position the roll and length sensor so that the sensor is in contact with the circumference of the roll and the leading end of the d1000 is directly under the sensor.
Zero the sensor and manually pull the leading edge of the tape and? Conduct one test on each roll. Rotate the rod so that the contact point is at the top of the rod see Fig.
ASTM D Standard Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for_图文_百度文库
Put benchmarks on the specimens, if needed. Mount the electrodes in such a way that the tape under test is clamped between electrode pairs spaced 25 mm 1 in.
This procedure results in slightly lower and more variable values.
Test Specimen Preparation 5. For tapes of 0. Do not use them in the vicinity of open?
It is acceptable to use as the horizontal platform a bench or the? If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Place the tape on a smooth clean surface, adhesive side up, or suspend it from one end in free air.
Check with the level to ensure that the wrapped specimen is horizontal. After the tape is on the panel 1d000 20 d10000 Vinyl chloride and co-polymers, Vinylidene chloride and co-polymers, and Polyethylene and co-polymers.
They must be stored in closed containers, and it is imperative to clean apparatus in a well-ventilated area. Yards per roll 5 weight of roll less core 3 length of specimen, in.
Vinylidene chloride and co-polymers, and. Attach the weight speci?
The usefulness of this test method is primarily for speci? Thermosetting properties are measured by a bond separation test and are reported as the time to failure of a heat-cured adhesive-to-adhesive bond under a prescribed load at a speci? NOTE 5—A high response speed in d1000 recording system is desirable, particularly when relatively high strain rates are employed.