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.
|Published (Last):||6 August 2012|
|PDF File Size:||1.23 Mb|
|ePub File Size:||14.75 Mb|
|Price:||Free* [*Free Regsitration Required]|
In general, the smooth-ground surface offers high gripping efficiency with most? If a value for measurement is followed by a value in inch-pound or English units in parentheses, it is likely that the second value will only be approximate and it is for information only. It is acceptable to use as the horizontal platform a bench or the?
This is angle A. Use white cotton gloves for handling very cold samples. Thread the tape over the pull roll and attach it to a core on the wind-up mandrel. Wrap three strips of metal foil not more than 0.
Weigh each roll to the nearest 0. Put benchmarks on the specimens, if needed. Calibrate the gauge for the actual load exerted by the presser foot.
Immerse the specimens for 16 h at room temperature in a speci? Conditioning for Room Temperature Measurements 8. Satisfactory means of obtaining this relative humidity are described in Practice D Attach the weight speci? Check with the level to ensure that the wrapped specimen is horizontal.
Discard the gauze after each cleaning step.
ASTM D – Unwind Force of Tapes
Conditioning for Low Temperature Measurements 9. Adhesion to Backing Calculate the average length of? Use only full rolls of tape. After unwinding is completed, take the reading of the length sensor. No further reproductions authorized. The amount of each is a predicator of the difficulty one might experience in handling strips of any length of unwound tape during their application.
Place the tape in the center of the drums with the edges parallel to the scribed lines. The design provides a high gripping force with standard air pressure. Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend.
Two forms of this tester are fully described in the Appendix to Test Methods D 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. Conduct one test on each roll. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. If it is necessary to prepare narrower specimens as prescribed in the test method, use extreme care since hand trimming has the potential to materially affect the test results.
ASTM D Standard Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for_图文_百度文库
Apply four 6 mm 1? These tapes are classified as follows: The initiation and d10000 of electrolytic corrosion are in? Use tape 14 mm 9? Use stainless steel Type or as prescribed in Speci?
Holding the opposite end of the strip, drape the strip over the rod with the adhesive side contacting and adhering to the rod see Fig. Clamp this portion of the exposed panel in the lower jaw of the testing machine and place the free end of the tape in the upper jaw.
Do not remove any outer layer. A tape width of 25 mm 1 in. Hang the specimens vertically in the oven at the test temperature with a g weight fastened to one end of each specimen.
The choice is determined largely by practical experience with the materials tested. Apply it, adhesive side down, to the polished surface of the panel.
Insulation Resistance at High Humidity. 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.
This procedure results in slightly lower and more variable values. Qstm A—For Class 1 Tape Therefore, wstm description will focus primarily on the unwind force test.
It is advisable to cover the test chamber with thermal insulation in order to minimize internal temperature? Increase the voltage from zero to breakdown at a uniform rate of 0. The serrated surface is recommended for stronger materials that require the greatest gripping action.