The difference of PS and ABS in performance

 

PS plastic (polystyrene)

      Material properties: 1. Good electrical insulation (especially high-frequency insulation); 2. Colorless, transparent, light transmittance rank only second the plexiglass; 3. Good coloring, water resistance, chemical stability; 4 Strength in general, but crisp, easy to produce brittle fracture stress, impatience benzene, gasoline and other organic solvents; 5. Suitable for production of insulating transparent parts, decorative parts and chemical equipment, optical instruments and other parts.

      Forming Performance: 1. Amorphous material, small moisture absorption, do not need to fully dry and difficult to break down, but the thermal expansion coefficient is high, easy to produce internal stress, good liquidity, is suitable to screw or plunger-type injection molding machine; 2. Need high melt temperature, mold temperature high and low injection pressure, injection time to reduce stress, prevent shrinkage and deformation; 3. Be available in various forms gate, the gate should connect with arc plastic parts to avoid damaging the gate place plastic parts. Draft is large. Thickness of plastic parts is uniform, no inserts best. If there are any inserts, plastic parts should be preheated.

 ABS (acrylonitrile-butadiene-styrene)

      Physical properties: 1. Light yellow granular or bead-like opaque resin, non-toxic, tasteless, low water absorption; 2. Excellent mechanical properties, excellent low temperature impact resistance, excellent electrical properties, wear resistance, dimensional stability, chemical resistance and dyeability 3. Water, inorganic salts, bases and acids resistance, insoluble in most alcohols and hydrocarbons solvents, soluble in aldehydes, ketones, esters and certain chlorinated hydrocarbons; 4. Be flammable, heat distortion temperature is low, weather resistance is poor; 5 Can be used in the automotive industry, mechanical equipment, electronic appliances.

      Forming Performance: 1. Has good processability, good product surface finish, and easy to paint and dye, available electroplating a variety of colors; 2 Good compounding resistance, can be used with a variety of resin with hybrid alloys (blends) such as PC / ABS, ABS / PC, ABS / PVC, PA / ABS, PBT / ABS, so that it will have new features and new applications; 3. If mixing with MMA, ABS can  be transparent, light transmission rate may up to 80%.