Page 197 - CW E-Magazine (26-9-2023)

Special Report

grow exponentially in the medium-
long term. In 2022, ~8-mn EVs were
sold globally, out of total vehicles sales
of ~80-mn, indicating penetration level
of around 10%. However, by 2030, this
penetration is likely to go up as high
as 35-40%, with around 38-mn EVs
being anticipated to be sold in 2030.
This would indicate a CAGR of 15-20%
over next 10 years.

China and EU would lead the way
with EV penetration of more than 50%
by 2030. But USA and India would not
be far behind and likely to have EV
penetration of ~25-30% by 2030. All
this is driven by decarbonization targets Source: Morgan Stanley Source: PPG Investor Presentation
committed by the various countries, to protect the battery and vehicle and impact resistance. However, certain
coupled with aggressive legislations components from such extremes powder coatings can meet all require-
supporting these targets. supports the longevity of the vehi- ments in a single coat. With newer EV
cle and its operational safety. technologies and designs, having a sin-
However, from a coatings industry Dielectric protection: Battery packs gle coat able to deliver multiple func-

perspective, this is not the most inter- also require protection from electro- tions will gain popularity due to both
esting aspect of this disruption. What is magnetic interference. Coatings cost and performance.
interesting to note is that the content of with dielectric properties can help
coatings that is needed in an EV would prevent arcing between metal parts. Powder coatings are anyways
be significantly higher (almost 2.0-2.5 Thermal management:Battery packs known for their inherent advantages

times, in value terms), compared to also require capability to manage- related to sustainability such as no vola-
a normal internal combustion engine temperature extremes, i.e., either tile organic chemicals (VOCs), minimal
(ICE)-based vehicle. too hot or too cold. If the tempera- waste and faster processing times.
ture is too low, the battery’s power is
In a typical ICE passenger car, coat- decreased, reducing capacity, and – Thus, we believe, EVs will be a
ings are primarily required for the tra- ultimately – vehicle range. If the good growth area for powder coatings.
ditional four coats on the exterior side, temperature is too high, the battery
which are all liquid coatings.Powder degrades at an accelerated pace. Trend # 3: Powder coating in archi-
coatings are applied on select under- tectural coatings
body parts, wheels etc. For EVs, powder coatings provide The performance & asset protection
significant advantages. Because of their requirement will only go up in future –
However, this will change in an EV. toughness, chemical resistance and high a case in point being the increasing
Though each EV manufacturer has its dielectric strength, epoxy powder coat- demand of powder coatings for archi-
own battery pack design, what is com- ings are an ideal fit for bus bars, stators, tectural applications.These are used for
mon is that they all need fire protec- rotors and covers for battery packs. interior, as well as exterior usage, on
tion, corrosion-& impact-protection, They also support the longer-term per- aluminium extrusions such as windows,
temperature management and electrical formance of the battery by protecting it facades, etc.
shielding. against corrosion and other threats.
Here are few examples of land-
Fire protection: EV charging points Traditionally, all these requirements marks and buildings where powder
generate considerable heat; fast are fulfilled by multiple layers of liquid coatings have been used.
chargers can push battery pack tem- coatings – the primer layer, address-
peratures to 270°C after just a few ing corrosion and dielectric protection, Hyper-durable powder coatings
minutes of charging, so being able and top coats addressing weatherability are the most weather-resistant coatings

Chemical Weekly September 26, 2023 197

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