For Aluminum FinsofAir Conditioner
HP: https://selfacecoat.com/en/

Super Hydrophilicity coating – SELFACECOATHighest HydrophilicPerformance- Beyond the limit -“Selfacecoat” is the only coating
agent that has achieved
a long-lasting hydrophilicity effect inthe world.

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Advantages of using VSR-40 aluminum fins
Applicableplace

Purpose
Improved heat exchange
efficiency

Heatexchange
aluminumfins

Dirt removal performance

Prevention of splashingwater droplets

Expected effect

Merit•

Improved drying speed of condensed water••

Reduced amount of electricity used
Energy saving effect (SDGs No.7)••

Dirt washed away by condensed water
Prevention of bacterial growth by
antibacterial effect••••Improved maintainability
Reduced cleaning frequency
Eliminating the risk of damage during cleaning
Mold control•

Prevention of splashing due to water droplets•

Complaint resolution due to splashing waterdroplets

High energy saving effectDepending on the usage environment, water droplets generated oradhered between the fins may block the air flow path by about 20%.
However, by using Selfacecoat, the heat exchange rate is improved byensuring sufficient air flow through the gaps between the fins, leading toenergy savings and a reduction in electricity bills.

Water splash prevention
Eliminates the problem of water splashingfrom the air outlet by preventing thegeneration and adhesion of water droplets.
It also simplifies the design of the water
recovery mechanism.

A clean space that prevents
the growth of mold andbacteria
The long-lasting self-cleaning effect prevents thegrowth of mold and bacteria inside the heatexchanger. It also prevents dust fromaccumulating, keeping the room clean.

Improved heat exchange efficiency• When water adheres to the hydrophilic aluminum fin surface, the water spreads over the entire
surface.
• Hydrophilic surfaces do not produce raised droplets, so the height of the droplets is reduced. *1• The less water in the same area*2, the faster the water can evaporate.

• Aluminum fins with a hydrophilic surface make it possible to create an "environment that dries

Hydrophilicity

Nonhydrophilicity

easily" = "an environment that easily absorbs the heat of vaporization" by lowering the height of
Wet and spread all over due to hydrophilicity

the water due to the spread of wetting.
• These improve the heat exchange rate and reduce the electrical load of the cooling function.

Hydrophilic coating
Water spread out*2１㎠【Simulation of evaporation phenomenon】*1High*2１㎠

Water flows down
easily by gravity

Dirt removal performance

Antifouling measures against dirt and dust by self-cleaning effect
Water

Water

Hydrophilicity

Nonhydrophilicity

Hydrophilicity

Nonhydrophilicity

Float andwash away dirt

As a property of hydrophilic property, it has a high affinity,
and water becomes spread out evenly. By the property,
the spreading water can easily get under the dust and dirt

adhering to the aluminum fin surface and let those dust

Dirt can be removedby hydrophilic effect

Dirt removal is notpossible with nonhydrophilic

float and remove easily.
5Prevention of splashing water droplets•If there are water droplets in the air passing between the aluminum fins of theheat exchange, they will be pushed out by the air passing between the aluminum
fins, causing problems such as scattering of water droplets from the air outlet. .

Heat exchange aluminum fins

Since water spreads by applying Cell Face Coat, even if there are water dropletson the surface of the aluminum fin, the water droplets will not scatter.

Hydrophilic aluminum fin

Non-hydrophilic aluminum fin
Aluminum fin plate

Aluminum fin plate

Air flow

Condensed
water

Condensed water

Aluminum fin plate
Due to the hydrophilicity of the fin surface,condensed water is less likely to become
airflow resistance.

Jumpingwater

Aluminum fin plate

Enlargedcross section

Due to the hydrophobicity of the fin surface, thecondensed water becomes water droplets, and thewater droplets fly off due to the force of the air current. 6

Hydrophilic treatment method•

In the case of aluminum plates processed with rolls (coils), it was not possible to apply anti-corrosion
treatment to the edges after processing. Selfacecoat can make the entire molded product hydrophilic byimmersing it.

OrderTemperature and working time

140℃×90sec

2

At normal temperature×30sec

3120℃ x 5-10min4

At normal temperature×60sec

5120℃ x 15min

The previous hydrophilic performance
When it comes to saying “Hydrophilic coating” so far, it means the coating that has very short-lastinghydrophilic performance and everybody has accepted common sense. Because there are no productsthat show long–lasting performance.
【The test result of the standard hydrophilicity coating agent】② Wet and dry cycle test
① Running water test *1
Immerse the coated aluminum plate in runningwater for a certain time, and wash and dry out theplate, then measure the water contact angle.

*2

Immerse the coated aluminum plate in running water for 8hours, then after that hung up this plate in the 80 deg C ofthe temperature-controlled bath for 16 hours per one cycle.
The cycle is repeated in 5 or 10 times.

Not
Hydrophilicity

NOTE *1 :This durability performance test is the accelerated test and 500hr equals about 6 years.
*2 : Definition of Hydrophilicity → Water contact angle is less than 30 deg C.

*2

Not
Hydrophilicity

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New World Standard
Through years of research and development, “Selfacecoat” has succeeded as the only superhydrophilic coating agent that exhibits long-lasting hydrophilicity retention.”
Now, the market tends to adopt this long-lasting specification for aluminum fins.
【The test result “Selfacecoat”】②Wet and dry cycle test

① Running water test *1*2SuperHydrophilicityhydrophilicity

NOTE *1: This durability performance test is an accelerated test and 2700hr equals about 30 years.
It means the Selfacecoat covers the standard life span of AC very easily.
NOTE *2:Definition of Super Hydrophilicity → Contact angle is less than 10 deg C.
Definition of Hydrophilicity → Contact angle is less than 30 deg C.

Superhydrophilicity

9Salt spray test (corrosiveness test)
There is no corrosion of the aluminum plate even after 500 hours of salt spray test, ensuring a high level ofhydrophilic performance. A high level of hydrophilic performance is maintained for a long period of time even inpoor environments, so you can fully enjoy the functions of hydrophilicity.
Condition after 500 hours of salt spray test
Initial value

500 hours later

Specimen 7

Untreated aluminum plate

VSR-40 treated plate

ResultContact angle

Contact angle

Point 1812

Good

Point 2810

Good

Point 3810

Good

Contact angle(3 points average）

810.7Good10

Benefit

Experience the benefits of Selfacecoat!
✓Capable for various aluminum fins
Ex: Air conditioner heat exchangers,Radiators, and Evaporators✓Easy implementation(Recommend usage method: Dipping)✓Increasing your sales and profit
If you need an anti-corrosive coat, we will provide the measures as well.
11Contact Now!
【The process of product sales】
We have lots of experience to export our product to other countries. Pleas feel free to contact us, first!

5. Sale your products
1.Sales contract

Your company
Your customers
2. Request thechange ofspecification

MARUSYOSANGYO Co., Ltd.

3. Export “Selfacecoat”

4. Production and provide
finished goodsYour contracted
aluminum factory

12Company profile

Person in charge
New Development Division
kaihatu@marusyosangyo.jp

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