PC transparent plastic raw materials and different polymers form alloys or blends to improve material properties. Specifically, PC/abs alloys, PC/ASA plastic raw materials, PC/PBT alloys, PC/PET alloys, PC/PET/elastomer blends, PC/MBS blends, PC/PTFE alloys, PC/PA alloys, etc. , Benefit the performance advantages of two materials and reduce costs. For example, in PC/ABS alloys, PC mainly contributes to high heat resistance, good toughness and impact strength, high strength and flame retardancy. ABS plastic raw materials can be improved. Formability, apparent quality, reduced density.

The three major application areas of PC plastic raw materials are the glass assembly industry, the automotive industry and the electronics and electrical industries, followed by industrial machinery parts, optical discs, packaging, computers and other office equipment, medical and health care, films, leisure and protective equipment, etc.

Polycarbonate is a thermoplastic resin containing -[ORO-CO]-links in the main chain of the molecule. According to the ester group in the molecular structure, it can be divided into aliphatic, cycloaliphatic, aliphatic-aromatic type. The value is aromatic polycarbonate, and bisphenol A type polycarbonate is the most important, and the molecular weight is usually 30,000-100,000. Polycarbonate, English name Polycarbonate, referred to as PC.

PC plastic raw material is an amorphous, odorless, non-toxic, highly transparent colorless or slightly yellow thermoplastic engineering plastic material with excellent physical and mechanical properties, especially excellent impact resistance, tensile strength, flexural strength, compression High strength; small creep, dimensional stability; good heat resistance and low temperature resistance, stable mechanical properties, dimensional stability, electrical properties and flame retardancy in a wide temperature range, can be in -60 Long-term use at ~120 ℃; no obvious melting point, in a molten state at 220-230 ℃; due to the high rigidity of the molecular chain, the resin melt viscosity is large; the water absorption rate is small, the shrinkage rate is small, the dimensional accuracy is high, and the dimensional stability is good. Low air permeability; it is a self-extinguishing material; stable to light, but not resistant to ultraviolet light, good weather resistance; oil resistance, acid resistance, strong alkali resistance, oxidizing acid and amine, ketone, soluble in chlorinated hydrocarbons and aromatics It is easy to cause hydrolysis and cracking in water for a long time. The disadvantage is that it is easy to produce stress cracking due to poor fatigue resistance, poor solvent resistance and poor wear resistance.

PC transparent plastic raw materials can be injection molded, extruded, molded, blow molded, thermoformed, printed, bonded, coated and machined, and the most important processing method is injection molding. It must be pre-dried before molding, and the moisture content should be less than 0.02%. Processing at high temperature will cause the product to produce white turbid color, silver threads and bubbles. PC has considerable forced high elastic deformation capacity at room temperature.

High impact toughness, so it can be cold-pressed, cold-drawn, cold-rolled and other cold forming processes. The molecular weight of PC for extrusion should be greater than 30,000, and a gradual compression screw should be used, with a length-to-diameter ratio of 1:18~24 and a compression ratio of 1:2.5. Extrusion blow molding, injection-blow, injection-pull-blow molding can be used. High quality, high transparency bottle. There are many kinds of PC alloys, which can improve the defects of PC melt viscosity (workability) and easy stress cracking of products.