Functional Inks : Near-infrared Shielding Materials

Overview

Scattered arrays of plasmonic nanoparticles have been shown to manifest a strong absorption of near-infrared light, and applied recently to solar control filters for automotive and architectural windows.
New near-infrared shielding materials, LaB6 (lanthanum hexaboride) and CWO®︎ (cesium tungsten oxide) with selective and strong near-infrared absorption in the range of 800 to 1200 nm have been developed originally by SMM. These materials diminish near-infrared rays of shorter wavelength which has much of the heat energy in sunlight compared to ITO (tin-doped indium oxide) and ATO (antimony-doped tin oxide).
* CWO®︎ is a registered trademark of SMM.

Application example

Automotive windows

Suppresses temperature rise inside the car

Solar-control laminated glass Solar-control plastic sheet Solar-control film

Residential housing materials

Solar-control laminated glass Solar-control plastic sheet Solar-control film

Patent

Near-infrared shielding materials and components containing LaB6 or CWO®︎ are SMM patented products.
Patents have been registered or applied for in Japan, USA, EU, China, Korea, Taiwan, Brazil and Australia.

Quality characteristics

1.Superior solar control effect :
LaB6 and CWO®︎ diminish near-infrared rays of shorter wavelength which has much of the heat energy in sunlight, compared to ITO and ATO.
2.A little usage :
LaB6 and CWO®︎ require only little content for exerting an equivalent effect, as compared to ITO and ATO, so they are very favorable from a cost standpoint as well.
3.High transparency :
LaB6 and CWO®︎ can be surface-coated on glass or PET film, or mixed/kneaded into a plastic material such as polycarbonate and polymetyl-metacrylate, to provide superior solar-filtering characteristics to a base material, while maintaining high transparency.

Transmission profiles of near-infrared shielding nanoparticles and a spectrum of sun light

Product lineup

Liquid dispersion :
For coatings of automotive and building window films.
Powder dispersion :
For kneading into resins for near-infrared-shielding plastic sheet applications.

In order to decrease scattered lights, SMM LaB6 and CWO®︎ particles are pulverized to nano size with polymer dispersion agents added to each type of resin to suppress agglomeration of particles for a uniform dispersion.

Product
lineup
Near-infrared
shielding
particles
Product name Application example Optical
properties
technical
data
SDS
Liquid dispersion CWO®︎ YMF-02A Automotive and building windows solar control films
Infrared-ray blockage for electronic devices
Detail Detail
LaB6 KHF-7AH Detail Detail
Powder dispersion CWO®︎ YMDS-874 Solar control plastic sheet Detail
LaB6 KHDS-06 Detail
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