SMC sound box part

1.Insulating material:
Excellent materials with high insulation resistance; high power frequency dielectric strength; keeping good dielectric property under high frequency.

2.Corrosion resistance:

Good corrosion resistance, resisting corrosion of acid, alkali and salt solution with relative low concentration, as well as many kinds of oil, organic solvents and sea water.
3.Light weight, high strength and toughness:

Having high tensile strength, bending strength and impact toughness, with specific gravity between 1.75-1.95, being an idea substitution of ordinary plastics.
4.Microwave-through property:

Don't reflect and break microwave propagation, can be used in wireless meter reading and remote monitoring.
5.Weathering resistance and thermal endurance and low-temperature resistance:

With good weathering resistance; keeping good mechanical perfaormance between (50°C~+160°C); service life exceeding 20 years.
6.Flame-retardant material generating merely thinner gas:

Fire resistance grade of FVO, gas density grade of 15, registered gas toxicity is quasi-safety class 1(ZA1).
7.Thermal insulation material:

It is a sort of thermal insulation material, and can abate the impact on internal temperature of box bodies caused by change in ambient temperature; compared with ordinary plastics, it can effectively reduce condensation and frost inside the box.
8.Easy to be machined or processed;

Having good impact resistance; not sensitive to notch(generating no tidy fracture surface, no crack extending); good machinability(can be drilled and cut).

Performance indexes of Box Material of Fiber-Reinforced Unsaturated Polyester resin

Degree of finish: the material shall contain no impurities, have a smooth and luster surface without cracks.