Beijing distribution room insulation pads 3mm test

Beijing distribution room insulation pads 3mm test Beijing distribution room insulation pads 3mm insulation pads can test all the gold in the informal sector through a third-party inspection to ensure compliance with the requirements, odor, toughness. :( Insulation pad test with 8mm thick rubber insulation board, for example) 1. Appearance: 1) mark depth and height did not exceed the plastic sheet thickness tolerance 2) bubbles per square meter, an area of ??not less than 1cm bubble over 5, any between two bubbles is not less than 40mm. 3) impurity depth and length does not exceed 1/6 of the thickness of the plastic sheet 4) Edge arrhythmia or spongy width not exceeding 10mm, a length of no more than 1/10 of the total length of the plastic sheet 5) did not crack 2. Hardness (Shore A) : 55-70 3. The tensile strength and elongation at break: 1) Tensile strength (Mpa) ≥5.0 2) Elongation at break ≥250% 4. elongation (150%) permanent deformation ≤25% 5 Hot air aging (70 ℃ * 72h): Tensile strength ≤30% 6. reduce the rate of water absorption ≤1.5% 7. electrical insulation performance tests: 1) Withstand voltage test: 25KV (rms), 1min, to be free breakdown 2) breakdown voltage test ≥35KV (RMS)