ASTM D2148 – Standard Test Methods for Bondable Silicone Rubber Tapes Used for Electrical Insulation
Description:
Significance and Use
5.1 Self-adhesion is a primary initial property since it affects layer-to-layer bonding. The integrity of the bond can significantly affect the electrical and physical performance of the insulation system. Therefore, the degree of self-adhesion is directly related to apparatus performance.
5.2 A high degree of self-adhesion is desirable for most electrical applications. In this test, a short unwinding length indicates a high degree of self-adhesion.
5.3 This test method has been found useful as a quality control test for lot acceptance.
Scope
1.1 These test methods cover tests for bondable silicone rubber tapes which form a sealed structure either with the application of heat (and pressure if needed) or by the process of auto-adhesion (self-fusing).
1.2 These test methods appear in the following sections:
| Test Method | Section |
| Adhesion | 3 – 10 |
| Bond Strength | 11 – 18 |
| Dielectric Breakdown Voltage | 19 – 26 |
| Hardness | 41 |
| Length | 33 and 34 |
| Thickness | 27 – 32 |
| Width | 36 – 40 |
1.3 Units—The values stated in SI units are the standard. The inch-pound units in parentheses are for information only. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
ASTM D2140