Hello everyone, I am your friendSmall library @ plastic library networkA restless veteran of the chemical industry, he has been focusing on assisting structural engineers to find suitable engineering plastic solutions for many years.
The main components of automobile lights are composed of reflectors, lenses, housings, light sources, electronic circuits, and mounting accessories.
Why plastic is used for car lights
At present, the main plastics used in China's car lamps are PC, PP, ABS, PMMA and a few other plastic materials. Plastics have the advantages of light weight, corrosion resistance, good impact resistance, high transparency, good insulation, low thermal conductivity, good mechanical properties, strong plasticity, molding processing, etc., and are more and more widely used in various fields.
Application of modified plastics in car lights
pc
Polycarbonate (PC) is a polymer containing a carbonate base in the molecular chain. Polycarbonate is known as a bulletproof adhesive due to its excellent mechanical propertiesTo learn more about 'plastics', 'engineering plastics', 'modified plastics' and other industry knowledge, massive material super physical property tables, super material selection cases, cost reduction and efficiency improvement schemes, welcome to search the whole network "Plastic Library Network" or WeChat search Plastic Library Network applet to enter the !!。It has the characteristics of high mechanical strength, wide range of operating temperature, good electrical insulation performance (but unchanged anti-arc performance), good dimensional stability, and good transparency. It is widely used in automotive lamps and other fields.
PC accounts for about 50% of the plastic materials in headlights, and is mainly used in the inner glasses, aluminized decorative parts and external light distribution glasses of headlamps and fog lamps. PC has a good adhesion to the aluminized layer, and can be directly aluminized on the PC substrate.
1.Wanhua Chemical.
Wanhua Chemical PC headlights.
HL6157 has been approved by AMECA for its excellent heat resistance and high light transmittance, making it suitable for automotive light distribution lens products.
A1225BK has outstanding highlight performance and excellent pitting performance, and is used in village frames, reflective bowls and other products on car lights.
2.Covestro.
Covestro PC integrated headlamp.
Covestro's tailor-made Makrolon-based polycarbonate LED grades also optimize optical performance, maintaining purity, color and stability despite continuous exposure to the glare of high-power LED lamps. In terms of processing, we offer multi-layer injection molding technology, which can produce thick-walled lenses with short cycle times and high precision.
Headlights: Polycarbonate reduces weight and improves design
Headlight lenses made of polycarbonate offer automotive designers a degree of freedom previously unimaginable compared to glass, while significantly reducing component weightTo learn more about 'plastics', 'engineering plastics', 'modified plastics' and other industry knowledge, massive material super physical property tables, super material selection cases, cost reduction and efficiency improvement schemes, welcome to search the whole network "Plastic Library Network" or WeChat search Plastic Library Network applet to enter the !!。In addition, polycarbonate meets stringent optical requirements for light transmission, high-temperature stability and resistance to LED light. Because polycarbonate lenses can be processed into almost any shape, they can concentrate light more effectively than glass lenses.
Taillights: Polycarbonate diffuser membranes meet the requirements for iconic appearance and design flexibility
Lightweight Makrofol polycarbonate diffusion films help manufacturers meet the most imaginative automotive OEM lighting design requirements with innovative solutions. These films are clear in color and have excellent light transmission and diffusion. These features improve vehicle appearance and hide LED hotspots, which in turn improves vehicle safety and enhances design.
In general, the film is placed behind the acrylic lens cover for LED backlighting. The material can be easily molded and can be die-cut or laser cut to meet iconic look and design requirements. Laser etching or embossed coatings can also enhance the scattering effect.
3.sabic
SABIC PC headlights.
SABIC polycarbonate Lexan resins are once again illuminating the way with Lexan XLS resins that meet high transmittance requirements for LED inner lenses and light guides. The material has better transmission and heat aging properties than standard PC.
For light guides, lenses, and a variety of LED assemblies that typically require stronger or more concentrated light emission, SABIC offers Lexan Lux resins。This transparent material has high light transmittance and high diffusion, as well as other performance qualities.
For taillight LED applications, Konduit compounds can provide enhanced thermal management. Lexan XHT copolymer resins are another option to help manage high-temperature environments in compact lighting fixtures, offering additional advantages over other high-heat materials in terms of flow, impact and color stability.
4.Kai Ducfu.
KEDF PC rear light.
Advantages of Makrolom 2405:
Transparent. Easy to release from the mold.
5.Samyang Chemical.
Samyang Chemical Daytime running lights for automobiles with high light transmittance polycarbonate.
Samyang Corporation announced in April 2023 that it has developed a high-transmittance polycarbonate for automotive daytime running lights (DRLs).
The newly developed high-transmittance polycarbonate uses a new light transmittance improver that uses isosorbide, a white biomaterial developed in-house. Compared to ordinary polycarbonate, it is characterized by excellent light transmittance and reduced yellow color. In addition, compared to the imported polycarbonate currently used, it has better heat resistance and stability, and the transparent color is not easy to turn yellow even after long-term use.
pbt/pet
PBT is commonly known as polyethylene terephthalenebutylene glycol, and the modified PBT has good mechanical properties (glass fiber reinforced PBT accounts for more than 70% of the market), similar to PA and POM, with small friction coefficient, good self-lubrication, good thermal and chemical stability, excellent electrical insulation, high rigidity and hardness, good impact, high dimensional stability, and good heat resistance.
PBT is generally used in the bezel of headlamps and the brackets in adjustment devices in car lights. PBT and ASA modification and then glass fiber reinforcement can be used to make the shell of fog lamp.
1.Neutralization. 
Sinochem PBT car headlights.
2.Kanghui New Materials.
Kanghui New Material PBT
Kanghui New Material PBT plant adopts German Jima process technology and foreign advanced equipment, with an annual production capacity of 80,000 tons for a single line and stable quality of PBT chipsTo learn more about 'plastics', 'engineering plastics', 'modified plastics' and other industry knowledge, massive material super physical property tables, super material selection cases, cost reduction and efficiency improvement schemes, welcome to search the whole network "Plastic Library Network" or WeChat search Plastic Library Network applet to enter the !!The post-processing performance is excellent, reaching the international advanced level.
Applications: Mainly used in automobiles, electronic appliances, industrial machinery, civil and industrial textiles, polymer alloys and blending industries.
3.BASF.
BASF PBT
From headlamp housings to door handles to roofs, BASF's engineering plastics and polyurethanes are the perfect combination of lightweight, aesthetics, practicality and design freedom for all exterior applications.
When it comes to lighting systems, all materials need to have a high-quality surface and fogging resistance. BASF's polybutylene terephthalate product range covers a wide range of products for a wide range of applications:
Ultradur B 4560 enables direct metallization of the light bezel;
The high-end PBT product Ultradur HGL IV has excellent resistance to fogging and mold release
Parts made of Ultradur S4090 G4 can be textured or metallic;
For the structural brackets of LED modules, Ultradur B4040 G10 is the ideal product for PBT.
PA Nylon
Pingmei Shenma car headlight PA
pc/abs
In the field of car lights, ABS is generally used after modification with PC material, and the proportion of PC content in ABS is determined according to the difference in use temperature and impact performance. ABS, PC ABS is generally used for tail light housings and trim panels.
Source: Kingfa Technology.
The main technical points of blonde lamp materials:
Lightweight technology: thin-walled, micro-foaming, high strength, low warpage.
Good sensory technology: spray-free, low gloss, light resistance, light scattering, low noise.
Surface treatment technology: spraying, electroplating, water transfer printing, vacuum evaporation.
Low emission technology: low VOC, low odor, low haze
pps
Hongsu Technology PPS car lights.
Source: Hongsu Technology.
Sichuan Zhongwu materials.
Other materials
Elkem liquid silicone rubber.
Liquid silicone rubber bluesilm LSR 6700
Performance: Good light transmittanceTo learn more about 'plastics', 'engineering plastics', 'modified plastics' and other industry knowledge, massive material super physical property tables, super material selection cases, cost reduction and efficiency improvement schemes, welcome to search the whole network "Plastic Library Network" or WeChat search Plastic Library Network applet to enter the !!It has good yellowing resistance, good weather resistance, and can maintain high permeability for a long time, low viscosity and good processing performance.
shinkong
Sumitomo Chemical ASN tail light cover.
Source: Jusailong.
If you need material selection services in your work, you are welcome to contact us at any [email protected].
For more material selection suggestions, product design defect solutions, and material physical properties tables, please visit @plasticku.com.
If you think this article is helpful to you, welcome to like and comment and follow, thank you very much!