What are the advantages of polycarbonate plastic cups?


What are the advantages of polycarbonate plastic cups? […]

What are the advantages of polycarbonate plastic cups?

Material properties High impact strength, good dimensional stability, colorless and transparent, good colorability, good electrical insulation, corrosion resistance, wear resistance, but poor self-lubrication, stress cracking tendency, easy to hydrolyze at high temperature, and other resins Poor solubility. Suitable for making small instrument parts, insulating transparent parts and impact-resistant parts

1. Amorphous material, good thermal stability, wide molding temperature range and poor fluidity. Moisture absorption is small, but it is sensitive to water and must be dried. The molding shrinkage rate is small, and it is prone to melt cracking and stress concentration. Therefore, the molding conditions should be strictly controlled, and the plastic parts must be annealed.

2. For plastic parts with high melting temperature, high viscosity, and more than 200g, a heated extension nozzle should be used.

3. The cooling speed is fast, the casting system of the mold should be based on the principle of thick and short, cold wells should be set up, the gate should be large, and the mold should be heated.

4. If the material temperature is too low, it will cause lack of material and dull plastic parts. If the material temperature is too high, it will easily overflow and the plastic parts will blister. When the mold temperature is low, the shrinkage, elongation, and impact strength are high, and the bending, compressive, and tensile strengths are low. When the mold temperature exceeds 120 degrees, the plastic part cools slowly, and it is easy to deform and stick to the mold

5. The wall of the plastic part should not be too thick, it should be uniform and avoid sharp corners and gaps