BMC Pellet

BMC unsaturated polyester Bulk Molding Compound

BMC is applied in car lights, electrical plastic parts, electric parts and so on. Excellent electrical properties, flame retardant properties, product performance stability, zero shrinkage.

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Details

The approximate composition of the material:

Serial Number

Raw material

Remarks

1 resin unsaturated polyester resin+anti shrinking agent
2 fiber alkali-free glass fiber, carbon fiber, etc.
3 filler inorganic filler
4 assistant  

 

Echnical Index:

Serial Number Test Item Unit Technical Index Test Method
BMC-1 BMC-2 BMC-3
1 Appearance - Smooth surface, no bubbles and cracks Eyeballing
2 Density g/cm3 1.75 ~1.95 GB1033
3 Hydroscopicity %  ≤0.2 ≤0.2 - GB1034
4 Moulding shrinkage % ≤ 0.15 ≤ 0.15 ≤ 0.30 ISO 2577
5 Bending strength Mpa ≥ 90 ≥ 80 ≥ 70 GB9341
6 Impact strength (no gap) KJ/m2 ≥ 30 ≥ 25 ≥20 GB1043
7 Distortion temperature °C ≥240 ≥240 ≥220 GB1634
8 Insulation resistance Normalcy Q ≥ l.Ox1013 ≥ l.Ox1013 ≥ l.Ox1012 GB1410
After 24 hours of soaking ≥ l.Ox1012 ≥  l.Ox1012 -
9 Electric strength ( in 90 °C transformer oil) Kv/mm ≥ 12.0 ≥ 12.0 ≥ 10.0 GB1408
10 Dielectric Dissipation Factor(1MHz) - ≤ 0.015 ≤0.015 - GB1409
11 Relative dielectric constant(1MHz ) - ≤ 4.5 ≤ 4.8 - GB1409
12 Arc Resistance S ≥ 180 ≥ 180 ≥ 150 GB1411
13 Proof tracking index(PTI ) V ≥ 600 ≥≥600 ≥ 600 GB4027
14 Combustibility Level V-0 V-0 - UL94  GB5169
15 Long-term heat-resistance temperature index - 155 155 130 GB11026
Note: Due to product differences, users can affirm performance and color verification according to their need.
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