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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Allow assembly to dry before measuring the unwound length.
ASTM D – Testing equipment according to ASTM D | Rycobel
Both test specimen and tape backing are to be used once. The maximum force satm is aetm Historical Version s – view previous versions of standard. Do not allow the adhesive surface to contact the? Place the tape on a smooth clean surface, adhesive side up, or suspend it from one end in free air.
Use clean steel plates. As the winding progresses to the lower end of the rod, insert a short length of lens tissue 3 mm 1? These backings are made from materials such as:.
After the tape is on the panel for 20 min Prepare two test specimens by spirally winding a layer of tape on the brass rods using 2. At least 20 yards of tape must be on the test roll. Construct each specimen from two strips of tape fastened together to form a mm 1?
Follow the procedure described in Immerse the specimens for 16 h at room temperature in a speci? These test methods are similar to IEC —3, but may differ sometimes in some details.
Holding the opposite end of the strip, drape d100 strip over the rod with the adhesive side contacting and adhering to the rod see Fig. An adhesion strength test after oil immersion is a method for determining this effect. Actual dd1000 results are in? The electrodes which are a part of the test? Take readings 15 s after impressing to V dc between the electrodes.
Make sure no air bubbles are trapped. Any reference to averaging of measurements refers to the averaging of measurements on a single roll and not to the average of all sample rolls.
Check with the level to ensure that the wrapped specimen is horizontal. The unwind force for widths other than 25 mm 1 in. Attach the weight speci?
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.
Thread the tape over the pull roll and attach it to s1000 core on the wind-up mandrel. The choice is determined largely by practical experience with the materials tested. There shall be no obstructions in the path between the platform and the spindle.
Measure the width perpendicular to the edge with aatm steel scale at three approximately equally-spaced points along the length. After conditioning, measure the relaxed length of the specimen to the nearest 2 mm or 0.
At the start of the unwinding, make sure that the length sensor maintains good contact with the roll and does not slip or bind.
If only the latter is obtained, also take load-time data. Calculate the average time of bond separation. These procedures apply to both Class 1 and Class 2 tapes except as noted above.
After all traces of solvent evaporate, wipe the surface of the panel with a clean dry piece of surgical gauze. Committee D09 has identi?
Put benchmarks on the specimens, if needed. A motorized system must be used to unwind the tape, as demonstrated in the video. Run off approximately mm 1 ft of tape for each determination.