Specific gravity: 1.18-1.20 g / cc mold shrinkage: 0.5-0.8% molding temperature: 230-320 ℃ drying conditions: 110-120 ℃ 8 hours long-term use in -60 ~ 120 ℃. Material properties of high impact strength, dimensional stability, colorless, transparent, colored, good electrical insulation, corrosion resistance, wear resistance, but poor self-lubricating, there is a tendency to stress cracking, high temperature easily hydrolyzed, and other resin phase soluble poor. Instrument for making small parts, impact-resistant insulating transparent pieces and parts of material properties An amorphous material, good thermal stability, wide molding temperature range, poor mobility. Moisture is small, but sensitive to water, subject to drying. Molding shrinkage, prone to cracking and melting stress concentration, it should be strictly controlled conditions molding, plastic parts subject to annealing. 2 high melting temperature, high viscosity, more than 200g of plastic parts, it is appropriate to extend the nozzle heating. 3 plastic illiquid, die casting system with thick, short of principle, should be established cold well, the gate should be big, mold should be heated. 4 material temperature is too low will cause lack of material, plastic parts dull, too easy to overflow edge material temperature, plastic foam. Mold temperature is low shrinkage, low elongation, low impact strength, flexural, compressive strength, tensile strength is low. Mold temperature over 120 degrees plastic cooling slowly, easily deformable plastic stick mold 5 wall should not be too thick, should be uniform to avoid sharp corners and gaps