Evidence
CHARACTERISTIC01
1. Objective
To evaluate test pieces coated with DYNAMIX by subjecting them to accelerated weathering tests using a Sunshine Weather Meter and examining the contact angle and gloss of the test pieces after the test.
2. Test Method
The test pieces were exposed to the Sunshine Weather Meter for specified durations, and their contact angles and gloss were measured. The following procedures were performed on the test pieces before measurement:
- ➀ The test pieces were gently washed with tap water using non-woven fabric.
- ➁ They were air-dried.
3. Test Specimens
Test specimens (70 × 150mm) were used, with only half of their surface applied with the DYNAMIX.
4. Equipment and Conditions
- Sunshine Weather Meter: Manufactured by Suga Test Instruments Co., Ltd.
- Black panel temperature: 63°C, Rainfall: 12 minutes / 60 minutes
- Contact Angle Meter: Model CA-X, Manufactured by Kyowa Interface Science Co., Ltd.
- Gloss Meter: Digital Multi-Angle Gloss Meter UGV-5D, Manufactured by Suga Test Instruments Co., Ltd.
5. Test Results
The results are shown next page.
CHARACTERISTIC02
The accelerated weathering test using the Sunshine Weather Meter, equivalent to three years of exposure (about 1,500 hours), revealed that water repellency with a contact angle above 90 degrees was maintained even after three years.
CHARACTERISTIC03
The accelerated weathering test, equivalent to three years of exposure (about 1,500 hours), demonstrated that the gloss level remained nearly unchanged compared to the initial value. This proves its effectiveness in stain resistance and paint protection.
CHARACTERISTIC04
Wipe Resistance Test
The coating maintained excellent water repellency even after the durability test.
| Contact angle | |
|---|---|
| Before | 101.8 |
| After | 93.1 |
Coating Hardness Test
The coating's hardness was measured using pencil hardness and Mohs hardness tests. Although
the
current JIS standard limits pencil hardness tests to 6H, unofficial testing showed a result of
9H using a 9H pencil.
| Pencil Hardness | 6H* |
|---|
*Current JIS standards state that the upper limit for pencil hardness testing is
6H.
Although unofficial, a test using a 9H pencil has produced results that indicate a
hardness of 9H.
CHARACTERISTIC05
| Alkaline resistance test | Acid resistance test | High temperature stability test | |
|---|---|---|---|
| Purpose | Stability study in alkaline environment | Stability study in acidic environment | Stability study in high temperature environments |
| Test solution |
➀ Sodium hydroxide (Junsei Chemical) 3% aqueous solution ➁ Sodium carbonate (Tokyo Chemical Industry) 5% aqueous solution ➂ Sodium silicate (Junsei Chemical) 5% aqueous solution |
Sulfuric acid (Junsei Chemical) 5% aqueous solution | none |
| Device | none | Thermostatic chamber | |
| Test conditions | The test should be performed in a room with a room temperature of 20±5°C, humidity of 60% or less, away from direct sunlight, harmful gases and vapors, and no drafts. | Test temperature: 50±1℃ Test duration: 1 hour Number of test cycles: 3 cycles |
|
| Test specimen | Only half of the surface of the test piece (70 × 150 mm) was treated with the coating agent. | ||
| Test method |
0.2 ml of each aqueous solution of ➀ sodium hydroxide, ➁ sodium silicate, or ➂ sodium carbonate was dropped onto the coated and uncoated areas of the test piece using a dropper, and the test piece was left horizontally for a short time (1 minute) and a long time (4 hours). After leaving it, rinse the surface of the test piece with water, wipe it off, and check the surface condition. |
Drop 0.2 ml of sulfuric acid solution onto the coated and uncoated areas of the test piece with a dropper, then leave it horizontally for a short time (1 minute) and a long time (4 hours). After leaving it, rinse the surface of the test piece with water, wipe it off, and check the surface condition. |
➀ Place the test piece in a thermostatic chamber set at 50℃ and heat for 1 hour. ➁ After heating for 1 hour, remove the test piece and leave it at room temperature (20-25°C) for 1 hour, then heat it again in a thermostatic chamber at 50°C for 1 hour. Repeat this process 3 times. ➂ After three cycles, remove the test piece and leave it at room temperature (20-25℃) for 24 hours before checking the surface condition of the test piece. |
| Test results | No problem | ||
| Pollen resistance test | Sap resistance test | Insect resistance test | |
|---|---|---|---|
| Purpose | Stability study against pollen | Stability study for tree sap | Survey on the impact of insects |
| Test solution | Oleic acid (first-class pure) | Cedar oil (genuine first grade) | Beeswax |
| Device | Thermostatic chamber | ||
| Test conditions | Specified temperature: 50±1℃ Time limit: 1 hour Standard drip amount: 0.2 ml |
Specified temperature: 70±1℃ Time limit: 30 minutes Standard drip amount: 0.2 ml |
|
| Test specimen | Only half of the surface of the test piece (70 × 150 mm) was treated with the coating agent. | ||
| Test method |
➀ In a room temperature (20-25℃) environment, a specified amount of oleic acid is dropped from a height of 30 mm onto the coated and uncoated areas of the test piece. ➁ Place the above test piece horizontally in a thermostatic chamber at 50±1℃ and leave it for 1 hour. ➂ After leaving it for the specified time, remove it from the thermostatic chamber, wipe off the dripped reagent with a soft dry cloth, and then leave it at room temperature (20-25°C) for 24 hours. Check the surface of the test piece after leaving it. |
➀ In a room temperature (20-25℃) environment, drip a specified amount of cedar oil from a height of 30 mm onto the coated and uncoated areas of the test piece. ➁ Place the above test piece horizontally in a thermostatic chamber at 50±1℃ and leave it for 1 hour. ➂ After leaving it for the specified time, remove it from the thermostatic chamber, remove the dripped reagent with ethanol, blow air over it, and then leave it at room temperature (20-25°C) for 24 hours. Check the surface of the test piece after leaving it. |
➀ Melt beeswax at approximately 120℃ and drip a specified amount onto the coated and uncoated areas of the test piece from a height of 30mm in a room temperature (20-25℃) environment. ➁ Place the above test piece horizontally in a thermostatic chamber at 70±1℃ and leave it for the specified time. ③ After leaving it for the specified time, remove it from the thermostatic chamber,
wipe off the dripped reagent with a soft dry cloth, and then leave it at room
temperature (20-25°C) for 24 hours. |
| Test results | No problem | ||
| Bird droppings resistance test | Gasoline resistance test | |
|---|---|---|
| Purpose | Research into the impact of bird droppings | Stability study for gasoline |
| PTest solution | Albumin 3% aqueous solution | Regular unleaded gasoline (Idemitsu Oil) |
| Device | Thermostatic chamber | none |
| Test conditions | Specified temperature: 50±1℃ Rated humidity: 30±5% Time limit: 1 hour Standard drip amount: 0.2 ml |
The test should be performed in a room with a room temperature of 20±5°C, humidity of 78% or less, away from direct sunlight, harmful gases and vapors, and no drafts |
| Test specimen | Only half of the surface of the test piece (70 × 150 mm) was treated with the coating agent. | |
| Test method |
➀ A 3% aqueous solution of albumin prepared with pure water is dropped in a specified amount from a height of 30 mm onto the coated and uncoated areas of the test piece in a room temperature (20-25°C) environment. ➁ Place the above test piece horizontally in a constant temperature and humidity chamber at 50±1℃/30±5%RH and leave it for the specified time. ➂ After leaving it for the specified time, remove it from the constant temperature and humidity chamber, wipe off the dripped reagent with a soft dry cloth, and then leave it at room temperature (20 to 25°C) for 24 hours. Check the surface of the test piece after leaving it. |
➀ Drop the specified amount (0.2 ml) of test liquid from a height of 30 mm onto the coated and uncoated areas of the test piece. ➁ Leave it to dry at room temperature (20-25°) and repeat this process for 10 cycles. ➂ After drying, wipe with a cloth and check the surface condition. |
| Test results | No problem | |