What are the properties of plastic material PS? What are the advantages and disadvantages?
High temperature, high mold temperature and low injection pressure should be adopted to prolong the injection time. It is beneficial to reduce internal stress and prevent shrinkage and deformation
Amorphous material, moisture absorption is small, do not have to be fully dry, not easy to break down, but the coefficient of thermal expansion is large, easy to produce internal stress. Good liquidity, can be used screw or plunger injection molding machine
The parameters of PS plastic (polystyrene) English Name: Polystyrene weight: 1.05 g / cm3 molding shrinkage rate: temperature: 170-250 degrees 0.6-0.8% molding material properties of electrical insulation (especially high-frequency insulation) excellent, colorless and transparent, light transmittance after organic glass, color of water resistance, good chemical stability, strength, but brittle that is easy to produce stress cracking, no resistance to benzene. Gasoline and other organic solvents. Suitable for production of transparent insulation. Trim and chemical equipment. Optical instrument parts forming performance.
Can be used in various forms of gate, gate and plastic parts arc connection, so as not to go to the gate when damage to plastic parts. Stripping large slope, ejection evenly. Plastic parts wall thickness uniform, preferably without insert
