الوصف

Name:styrene plastics styrenics(PS)
Definition:a class of plastics including styrene groups in a large molecular chain,including styrene and its copolymers;
Classification:common polystyrene(GPPS),high impact polystyrene(HIPS),expandable polystyrene (EPS),metallocene polystyrene(SPS),etc;
Properties:the lustrous, transparent, bead like or granular solid;
Density:1.*4～1.*9;
Transparency:*8%～*2%;
Refractive index:1.*9～1.*0;
Melting temperature:**0～**0℃;
Thermal decomposition temperature:**0℃;
Thermal deformation temperature:*0～**0℃;
Long term use temperature:*0～*0℃;
Molding shrinkage rate:0.**0.8%;
Molding temperature:******0℃;
Dielectric coefficient:3.**3.2;
Arc resistance:**0s;
Solubility:dissolved in aromatic hydrocarbons, chlorinated hydrocarbons, aliphatic ketones and esters, etc;only swelling in acetone;Low water absorption;
Characteristic:excellent electrical performance,both the volume resistivity and the surface resistivity are very high,good radiation resistance and so on;
Application:
1. Electronic appliances:connector,switch parts,household electric appliances,accessory parts,small electric cover,etc(heat resistance,flame retardancy,electrical insulation,forming processability);
2. Automobile:outfit parts(corner grille,the heat engine cover etc),internal parts(endoscopic stay,wiper bracket,control system valve),automotive electrical parts(automobile ignition coil stranded tube,various electrical connectors, etc);
3. Mechanical equipment:the belt drive shaft of a video tape recorder,electronic computer hood,mercury lampshade,electric iron cover,baking machine parts,gear,cam,,electronic meter shell,the parts of the camera(heat-resistant and flame retardant requirements);
4. Optical industry:optical glass,optical instrument,lampshade,Illuminator,electrical components,instrument, etc.