Application scheme of modified polycarbonate (PC) materials in automobiles

Application scheme of modified polycarbonate (PC) materials in automobiles

Polycarbonate (PC) is a general term for a class of high molecular weight polymers containing carbonate structures in their molecular chains. Classified by the functional groups on the molecular chain, they can be divided into aliphatic, aromatic or aliphatic-aromatic PC. It is a type of thermoplastic engineering plastic with excellent comprehensive properties. Compared to other thermoplastic materials, it has high impact strength, good transparency, maintains high mechanical strength, good electrical performance, and high dimensional stability over a wide range of temperatures. It is also easy to process and widely used in the automotive, construction, packaging, lighting industries and more.YONGJIANG Group---servo injection molding machine.

In the automotive industry, PC is mainly used in automotive lighting systems and interior and exterior decoration. It also has applications in intelligent central control systems. The flame resistance and strength of PC can be significantly improved through toughening, strengthening, flame retardant, and alloying modification. Modified PC materials are widely used in automotive parts, OA products, electronic and electrical products, and more.

PC is used in car windows that have optical properties and unique characteristics such as impact resistance, weather resistance, light weight, and high strength. It is continuously challenging the traditional position of automotive glass windows. Compared to traditional inorganic glass windows, the advantages and disadvantages of PC materials are quite obvious. Its advantages include being more lightweight, having stronger design flexibility, and higher toughness. By employing PC modification techniques, PC can be used in automotive quarter glass windows, rear windshields, panoramic sunroofs, and more. YONGJIANG machinery was built in year 1996, a leading Manufacture specialized in different types of servo injection molding machines such as pet preform injection machine,paint bucket injection machine,plastic crate injection machine,pvc fitting injection machine,multiple color Injection machine. range from 100TON to 3000TON.

Modified PC materials are used in automotive interior and exterior decorations due to their excellent heat resistance, impact resistance, rigidity, and good processing flow. The most widely used are PC/ABS and PC/PBT alloys. PC/ABS alloy is also used to manufacture automotive instrument panel peripheral components, defroster plates, door handles, drain boards, brackets, steering column sleeves, decorative panels, air conditioning system accessories, and other automotive parts. PC/PET alloys can be used to make car exhaust ports and license plates. PC/ABS alloys can also be used to make car exterior parts, such as wheel covers, exterior mirror housing, and taillight covers. PC/ABS has excellent molding performance and can process large car parts, such as car mudguards.

Car instrument panels are usually made of low-gloss PC plastics and their alloys, which have high gloss on the surface and glare and reflections on the windshield, seriously affecting driving safety. Therefore, the surface gloss of automotive interior parts made of these materials needs to be lowered through painting or printing processes. Hard instrument panels are mainly injection molded with PP, PC, ABS, PC/ABS and other materials and are commonly used in light-duty trucks, heavy-duty trucks, and buses. Soft instrument panels are composed of skin, skeleton, cushioning layer, and more. They often use PVC/ABS or PVC skin + ABS or PP skeleton + foam cushioning layer.

Generally, the A, B, and C pillar decorative columns of a passenger car are made of PP materials, while some high-end models will use PC/ABS materials for higher safety requirements.

Door panel decorations, interior door handles, and control consoles are mainly made of PC/ABS, electroplated PC/ABS, and heat-resistant ABS. PC/ABS resin is the material that has developed the fastest and is most widely used for car interior door handles. This alloy has high strength like PC and easy electroplating performance like ABS. It is mainly divided into electroplating and spray-coating types. The door handle made of electroplated PC+ABS materials has a more metallic appearance and looks more upscale.

The intake grille commonly uses ABS or PC/ABS alloy, both of which have good electroplating properties. High-gloss substrates use high-gloss ASA, high-gloss PMMA alloy and high-gloss PC with excellent weather resistance design, combined with highly polished high-gloss molds, can achieve an eye-catching high-gloss black and bright appearance, which is very in line with the current requirements for appearance, environmental protection, and fashion.

Bumper

Bumper shells of automobiles are often made of polycarbonate (PC) plastic, which is a multi-functional semi-crystalline material formed by PC/PBT alloy and PC/PET blend. It has excellent chemical corrosion resistance and can maintain high stability when in contact with automotive oils. It can maintain excellent mechanical performance over a wide temperature range, especially impact resistance. It has strong UV resistance and does not need to be painted or pre-treated.

Spoiler

PC/ABS has excellent processing and mechanical properties, and is widely used in automotive spoilers.

PC is used in the battery protection cases and charging station cases of new energy vehicles.

In addition to vehicle lamps, windows, and interior and exterior decorations, polycarbonate is also widely used in the battery protection cases and charging station cases of new energy vehicles.

Battery protection case

The development trend of module housing plastic is towards lightweight and integrated design, which requires materials to have better mechanical properties and be easier to form into thin-walled parts. PC/ABS alloy is one of the preferred materials for module housing plastic, and its heat resistance and weather resistance meet the requirements for the use of new energy vehicle module housing.

New energy vehicle charging station

Charging stations are basically outdoors and must withstand wind, sun, rain, etc. The engineering plastics used in charging stations must meet requirements such as good mechanical properties, environmentally friendly flame retardancy, long-term weather resistance, good insulation, high and low temperature impact resistance, and good coloring ability. PC/ABS, PC/ASA, and PC/PBT modified by flame retardancy are suitable for the selection of charging station and gun housing.

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