Polycarbonate (Polycarbonate, abbreviated as PC) molding refers to the process of processing the polycarbonate material into the desired shape and size through a specific process. Polycarbonate is an excellent thermoplastic engineering plastics, with high strength, high transparency, excellent impact resistance and heat resistance and other characteristics, so it is widely used in many fields.
1. Polycarbonate molding technology principle
Polycarbonate molding technology mainly includes injection molding, extrusion molding and blow molding and other methods.
1.1 injection molding: through the injection molding machine will be molten state of polycarbonate into the mold, after cooling and curing to get the desired shape of the product. Injection molding has the advantages of high production efficiency, high dimensional accuracy, and can be molded into complex structures.
1.2 Extrusion molding: The raw material of polycarbonate is heated and melted by extruder, and then extruded into continuous profiles or plates. Extrusion molding is suitable for the production of large quantities, simple shape of the product, such as PC sheet, pipe, etc..
1.3 Blow Molding: Use gas pressure to make the molten polycarbonate expand and fit the mold, and then get the hollow products after cooling. Blow molding is suitable for the production of containers, bottles and other hollow structure of the product.
2. Customization of polycarbonate molding products
Polycarbonate molding products can be customized according to customers’ needs, including the size, shape and color of the products. During the customization process, customers need to provide detailed design drawings and technical requirements, and manufacturers choose the appropriate molding process and molds for production according to these requirements.
3. Introduction of polycarbonate molding materials
Material: polycarbonate
Characteristics:
High transparency: the transparency of polycarbonate can reach 90%, known as “transparent metal”, with excellent optical properties.
High Impact Strength: The impact strength of polycarbonate is much higher than that of ordinary glass and many other plastics, which makes it an ideal material for manufacturing bullet-proof glass, helmets and other products.
Heat resistance: polycarbonate’s long-term use temperature can reach 120 ℃, while having good cold resistance, embrittlement temperature of -100 ℃.
Electrical insulation: polycarbonate has excellent electrical insulation properties due to its small polarity and low water absorption.
4. Polycarbonate molding product characteristics
Product: PC sheet as an example
Thickness: can be customized, common thickness range 2mm-10mm.
Impact resistance: the impact strength of PC sheet is 250 times that of glass and 30 times that of acrylic sheet.
Light transmittance: high light transmittance, up to 90% or more, close to the light transmission effect of glass.
Dimensional stability: PC sheet in the temperature change and humidity change, good dimensional stability, not easy to deformation.
Processing performance: PC sheet is easy to process, can be bending, engraving, punching and other secondary processing, to meet the diverse design needs.
Data:
Impact strength: cantilever beam notched impact strength is 600~900J/m².
Heat distortion temperature: the heat distortion temperature of unfilled PC is about 130℃, which can be increased to 140℃ after glass fiber reinforcement.
Transmittance: High transmittance, up to 92% or more.
Processing Temperature: The processing temperature range of PC is usually between 270~320°C, depending on the type of material and processing requirements.
Polycarbonate Molding FAQ
Q1: What do I need to pay attention to during polycarbonate molding?
A1：Polycarbonate molding process needs to pay attention to control the processing temperature, mold temperature, injection pressure and other parameters to ensure product quality. At the same time, due to the high water absorption rate of polycarbonate, it needs to be fully dried before processing.
Q2：What are the application areas of polycarbonate molding products?
A2: Polycarbonate molding products are widely used in automobile manufacturing, construction, optical lighting, electronic appliances, mechanical equipment, medical devices and many other fields. For example, automobile windows, bullet-proof glass, architectural light roofs, LED lamps and lanterns housings, and medical equipment parts.
Q3: What are the advantages of polycarbonate compared with other plastics?
A3: Compared with other plastics, polycarbonate has higher transparency, impact strength and heat resistance. At the same time, polycarbonate also has good electrical insulation properties and processing performance, to meet a variety of complex structures and high performance requirements of product design needs.
