Sheet Molding Compound (SMC)

Sheet molding compound is made from SMC special yarn, unsaturated resin or low shrinkage additives, fillers and various additives. This product has excellent electrical properties and decay resistance, so it is widely used in transportation vehicle……

Sheet molding compound is made from SMC special yarn, unsaturated resin or low shrinkage additives, fillers and various additives.

This product has excellent electrical properties and decay resistance, so it is widely used in transportation vehicles,building and electric field.

Technic Data
No. Project Units Item data
Model SMC-I High electric and High mechanic type(902) SMC-II High electric mechanic type(903) SMC-III Normal mechanic type(904)
Outlook _ _ The surface should be smooth,no trace,bubble,and color should be same
1 Density g/cm3 1.7_ _1.9
2 Heat resistance of long time temperature 155 155 130
3 Water absorption mg ≦20 ≦20 `–
4 Mould plastic shrinkage rate % ≦0.15 ≦0.15 ≦30
5 Thermal Shrinkage temreture(A) ≧240 ≧240 ≧220
6 Impact strength (simple beam, no gap) kJ/m2 ≧90 ≧60 ≧45
7 Bending strength Mpa ≧170 ≧150 ≧135
8 Insulation resistance(Normal) ≧1.0*1013 ≧1.0*1013 ≧1.0*1012
Insulation resistance(soaking 24h) ≧1.1*1012 ≧1.1*1012 `–
9 Dielectric strength(90℃ oil soaking) MV/m ≧12.0 ≧12.0 ≧10.0
10 Dielectric loss factor(1MHZ) _ _ ≦0.015 ≦0.015 `–
11 Relative dielectric constant (1MHZ) _ _ ≦4.5 ≦4.5 `–
12 Arc Resistant S ≧180 ≧180 ≧150
13 Resistance to traceability index (PT I) V ≧600 ≧600 ≧600
14 Flammability _ _ Fvo Fvo `–

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