Composition：
3240 laminate Sheet is made of non-alkali electronic glass cloth, which is made by impregnating epoxy resin and phenolic resin under heat and pressure. The model number is 3240. It has high mechanical properties at medium temperature and stable electrical properties at high temperature.
Application:
Glass fibre epoxy sheet is one of the insulating materials, widely used in transformers, electrical equipment and other electrical equipment. Therefore, it has high insulation and compressive strength, which can avoid accidents such as leakage and breakdown; second, it has good heat resistance and does not deform at 180 degrees high temperature. In addition, it also has good thermal conductivity, lightning protection, mechanical strength and so on.
Features:
(1) Good mechanical properties. That is, when it is subjected to various external loads (tensile, bending, impact, alternating) under different environments (temperature, medium, humidity), it can show good stability.
(2) Strong adaptability. Epoxy resins, curing agents, and modifiers can be adapted to various requirements on the form. It can range from very low viscosity to high melting point solids.
(3) Relatively wide curing temperature range. It can be cured within the range of 0-180 degrees.
(4) Low shrinkage. It is produced by direct addition reaction or ring-opening polymerization reaction of epoxy group in the resin molecule. No moisture or other volatile substances are released during processing. The shrinkage shown during the entire curing process is very low, generally less than 2%.
(5) Strong adhesion. Because the molecule contains polar hydroxyl and ether bonds, and the internal stress generated between the molecules is small, thus it has strong adhesion.
Technical Parameter
No. | Item name | Unit | Test method | Index |
1 | Density | g/cm3 | GB/T5130 section 8.1 | (1.80-2.08) |
2 | Water absorption | mg | GB/T5130 section 8.2 | Refer to table 2 |
3 | Vertical layer direction bending strength | MPa | GB/T5130 section 5.1 | ≥340 |
4 | Vertical layer direction compression strength | MPa | GB/T5130 section 5.3 | ≥ (350) |
5 | Tensile strength | MPa | GB/T5130 section 5.7 | ≥ (300) |
6 | Compact strength (Simply strut-beam method) | KJ/m3 | GB/T5130 section 5.5.1 | ≥33 |
7 | Insulation resistance after water dipping | Ω | GB/T5130 section 6.3 | ≥5.0 × 108 |
8 | Mediate loss factor, 1MHz hour | ____ | GB/T5130 section 6.2 | ≤ 0.04 |
9 | Dielectric constant, 1MHz hour | ____ | GB/T5130 section 6.2 | ≤5.5 |
10 | Vertical layer direction electric strength at (90±2)ºC transformer oil | KV/mm | GB/T5130 section 6.1 | Refer to table 3 |
11 | Parallel layer direction striking voltage | kV | GB/T5130 section 6.1 | ≥35 |
Sample:
Free sample available but not free delivery.
Cooperation:
Dedicated to our belief: honest and trustworthy, we have the entrepreneurial spirit of assisting partners to achieve their own careers, and provide customers with quality and service.
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