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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Calibrate the gauge for the actual load exerted by asstm presser foot. Bond Strength After Solvent Immersion. ASTM D covers several test methods for the characterization of tapes used in electrical applications.
Insulation Resistance at High Humidity. These backings are made from materials such as: The initiation and progression of electrolytic corrosion are in? A number in parentheses indicates the year of last reapproval. Secure one end e1000 the specimen strip of tape near one end of the rod. Operate the machine from the scale.
Use stainless steel Type or as prescribed in Speci?
In automated manufacturing environments, these rolls are loaded into a machine for assembly. Adhesion to Backing Method B—Slow Rate of Removal Continue the test for a prescribed time, or until failure occurs by bond separation. Vinyl chloride and co-polymers.
This completes the preparation of the test specimen. Pressure Sensitive Adhesive tapes are sold in rolls. Last previous edition approved in as D— The choice is determined largely by practical experience with the materials tested. Remove the specimens from the chamber and condition them as described in atm. Precision and Bias Place the tape in the center of the drums with the edges parallel to the scribed lines.
Remove the assembly from the oven and cool to room temperature. Use a guard so that only the current?
ASTM D – Unwind Force of Tapes
Discard the gauze after each cleaning step. Polyethylene terephthalate polyester films. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. They must be stored in closed containers, and it is imperative aastm clean apparatus in a well-ventilated area.
This procedure results in slightly lower and more variable values. The free-turning wheel or drum of the assembly shall? The rubber-coated surface is of value with materials that tend to be weakened by pinching at the edge of the jaw face.
Conduct three tests on each roll. After all traces of solvent evaporate, wipe the surface of the panel with a clean dry piece of surgical gauze. Record the burning time for each test and calculate the average burning time. Vinyl chloride and co-polymers, Vinylidene chloride and co-polymers, and Polyethylene and co-polymers. It is advisable to cover x1000 test chamber with thermal insulation in order to minimize internal temperature?
Apparatus and Materials Protect the adhesive surface from dust. Follow the procedure asm in Wrap the tape so as to leave a gap between turns of 1 to 1.
Method A—Fast Rate of Removal The usefulness of this test method is primarily for speci? These tapes are classified as follows:. Do not remove any outer layer. 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.
When making high voltage tests, particularly in compressed gas or in oil, it is possible that the energy released at breakdown will be suff? The apparatus must be capable of providing smooth, uniform jaw movement during testing, and the rate adjustable in increments necessary to c1000 strain rates that ast, speci?