Key Applications of Infrared Transmitting Polycarbonate

The global infrared emitter and receiver market has increased by $677 million, with a CAGR of 4.9% in 2023. These statistics indicate that the use of IR-based technological solutions will increase significantly in the upcoming years.

Experts are already using IR by integrating it with various types of materials in equipment and tools for different industries like defense and military, healthcare, construction, restaurants, etc. Among these, a considerable amount of use of IR-passing materials that block visible and UV rays can be observed.

The same goes for the infrared-transmitting polycarbonate. Considering its growing use, we would like to inform the various industries’ professionals, product designers, manufacturers, etc., about its most common but important applications.

Understanding of IR Transmitting Polycarbonate

Infrared-transmitting polycarbonate is also known as IR polycarbonate to professionals and manufacturers. By definition, IR passing polycarbonate blocks visible and UV lights due to the implemented specialized pigments or/and coating of 700 nanometers to 2500 nanometers wavelengths.

During the blocking of the visible and UV rays, IR polycarbonate allows the passing of the below-listed infrared radiations.

  • Near-infrared with wavelengths of 700 to 1,400 nanometers;
  • Mid-infrared with wavelengths of 1,400 to 3,000 nanometers;
  • Far-infrared with wavelengths of 3000 nanometers to 1 mm;
Infrared Transmitting Polycarbonate

Working Process of IR Transmitting Polycarbonate

In the working process, the wavelengths of the used pigments or coatings block the visible light as their wavelength ranges from 400 to 700 nanometers, which is lower than the wavelength of the implemented pigment or coating on the polycarbonate sheet or product.

As a result, visible light cannot pass through the polycarbonate. Again, the UV wavelengths range from 100 to 400 nanometers and are blocked by the respective IR polycarbonate sheet or product.

Characteristics of Infrared Transmitting Polycarbonate

Apart from the IR passing and visible light blocking, there are several key characteristics associated with it.

  • Its impact strength is high;
  • IR polycarbonate is also as durable as conventional polycarbonate;
  • This construction material can deal with various temperature ranges;
  • IR-transmitting polycarbonate can tolerate high temperatures without any deformation;
  • It has strong resistance against various acids, bases, and solvents;
  • This material is equipped with excellent electrical insulation properties;
  • It possesses a higher degree of dimensional stability;

Production Process of IR Polycarbonate

First, polymerization of bisphenol A and carbonyl dichloride (COCl2) happens within the presence of methyl chloride solvent. Second, aqueous and organic solutions are brought into contact, which forms polycarbonate chains. Third, fresh polycarbonate is extracted after purification and drying.

Here, in the production process, pigments with 700 to 2500 wavelengths are added to import IR-transmitting property. However, most manufacturers use Nanoparticle Coatings, Narrowband Dielectric Coatings, Multi-Layer AR Coatings, etc., to ensure the passage of infrared rays while blocking UV and visible lights.

Applications of Infrared Transmitting Polycarbonate

Infrared-transmitting polycarbonate is used in numerous applications, which are mentioned below.

Most Common Uses

  • In the telecommunication industry, devices like IR transceivers, various communication systems, etc., use infrared rays to transmit data;
  • IR-polycarbonate is used in heat-sensing equipment that monitors and controls manufacturing processes;
  • Infrared-transmitting polycarbonate-made equipment is used in non-destructive testing to detect flaws in the respective materials;
  • IR-transmitting polycarbonate is used in remote control covers to control the device through the passing and interaction between IR and respective settings;
  • In the case of driving at night or in low-light conditions, the associated IR polycarbonate in the night vision system helps the driver to drive efficiently;
  • Again, this construction material helps reduce glare and improves the efficiency of IR-based adaptive headlight systems;

Critical Applications

  • In the construction sector, infrared transmitting polycarbonate is used as an energy-efficient glass for windows, enhancing thermal insulation. Additionally, this material is used in smart glass technology that controls light transmission and energy transmission in the building;
  • In medical device manufacturing, infrared-transmitting polycarbonate is used for imaging and sensor production. Additionally, this construction material, IR-transmitting polycarbonate, is used in the production of various protective gears and face shields;
  • IR-transmitting polycarbonate components are used in cameras for surveillance and security. This inclusion allows the CC camera to take pictures or videos in low or zero light conditions;
  • IR-transmitting polycarbonate is used in night vision goggles and other IR-based vision systems in the military sector;
  • The aircraft’s IR sensor and imaging system uses polycarbonate components that can transmit infrared radiation;

Pros and Cons of Using IR Transmitting Polycarbonate

ProsCons
Good IR transmissionA bit costly
Higher impact resistance than IR Transmitting PMMA SheetCan host scratch
Enhanced weather resistanceLimited or zero color options
VersatilityHeat buildup in the case of absorption

Conclusion

Finally, we hope that you have understood the wide variety of uses of infrared transmitting polycarbonate. The diversity of its use makes us understand the importance of this construction material in various industries.

However, typically, you will be able to purchase 0.8 mm to 3 mm IR-transmitting polycarbonate with varying degrees of infrared ray transmission. The price also varies depending on many factors like manufacturing country, international tariff, thickness, size, seller type, and so on.

UVPLASTIC is a leading supplier of IR transmitting polycarbonate in China. In the meantime, it provides machining services. Contact UVPLASTIC for more information today.

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