SMC
SMC
SMC insulation board is a sheet-shaped product in various colors that is molded from unsaturated polyester glass fiber reinforced sheet molding compound. The main raw materials are GF (special yarn), UP (unsaturated resin), low shrinkage additives, MD ( Filler) and various additives, with excellent electrical insulation properties, mechanical properties, thermal stability, chemical resistance and corrosion resistance, used in various insulation partitions of high, medium and low switchgear
Technical index:
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Number |
Index name |
Unit |
Standard Value |
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1 |
Density |
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2 |
Water absorption |
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3 |
Mold shrinkage |
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4 |
Heat distortion temperature(A) |
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5 |
Impact strength longitudinal simply supported beam, notched |
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6 |
Bending strength |
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7 |
Insulation resistance |
Normal time |
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After 24 hours of soaking |
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8 |
Electric strength (90 degrees Celsius in oil) |
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9 |
Dielectric loss factor(1MHZ) |
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10 |
Relative permittivity(1MHZ) |
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11 |
Arc resistance |
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12 |
Tracking Resistance Index(PTI) |
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13 |
Combustibility |
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14 |
Temperature resistance grade |
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