Test Items

Test Conditions

Test Results

1

Film Thickness

Determined by film thickness gauge, range 45±5um

40-45um

2

Adhesion

The sample is placed flat and scored both horizontally and vertically using a 100-grid knife. After cleaning the scored section, 3M#610 tape is applied over the grid. The tape is then pulled off at a 45° angle three times, resulting in a 5B adhesion rating.

5B

3

Hardness

Lay the test panel flat. Using the Mitsubishi Pencil Hardness Tester at a 500g load, the coating should exhibit a scratch-free surface with a hardness rating between F-H.

F-H without scratches.

4

Rub Resistance Test

Using EF74 rubber with a 500g load, rub the coating back and forth 300 times. Underlying material (paint) should not be exposed.

No substrate exposure observed.

5

RCA

75g load with tape abrasion on coating:

TSA system: 30 rubs without exposing base paint

TS-B system: 80 rubs without exposing base paint

TS-C system: 200 rubs without exposing base paint.

No substrate exposure observed.

6

Alcohol Resistance

Under 500g load, rub coating 60 times per minute using cloth soaked in 95% alcohol from a 3cm distance, 500 times without exposing underlying material (paint).

No substrate exposure observed.

7

Chemical Resistance

100% cotton sieve with mesh size 300×300mm, cycle rate 0.5/S, 3cm distance, 500g load, 100 tests. Materials: ① Acidic artificial sweat (pH4.7); ② Olive oil; ③ Nivea; ④ Lemon juice; ⑤ Cleaner; ⑥ Isopropanol 95%. No anomalies after test.

No noticeable abnormalities.

8

Boiling Water Resistance

It was submerged in an 80℃ water bath for 2 hours. The surface remains unchanged with a 5B pencil hardness test result.

No visible abnormalities, 5B hardness achieved.

9

High Temperature and Humidity Resistance

Exposed to 65℃ and 95% humidity for 120 hours, followed by a 6-hour recovery at room temperature. Post-examination shows no abnormalities with a 5B pencil hardness test result.

No visible abnormalities, 5B hardness achieved.

10

High Temperature Storage

Stored in a 70℃ environment for 48 hours, then allowed 4 hours to return to room temperature. Post-examination shows no abnormalities with a 5B pencil hardness test result.

No visible abnormalities, 5B hardness achieved.

11

Low Temperature Storage

Placed in a -40℃ environment for 48 hours, followed by a 4-hour recovery at room temperature. Post-examination shows no abnormalities with a 5B pencil hardness test result.

No visible abnormalities, 5B hardness achieved.

12

Thermal Shock Resistance

High temperature set at 60°C, low temperature at -40°C, each temperature held for 1.5H, transition time is 20 minutes, 20 cycles total. After 4 hours at room temperature, tested with 5B grid. No color change, bubbling, peeling, falling, or change in gloss.

No visible abnormalities, 5B hardness achieved.

13

Temperature and Humidity Cycling

High temperature set at 65°C with 95% humidity, low temperature at -40°C, each temperature held for 1.5H, transition time is 20 minutes, 20 cycles total. After 4 hours at room temperature, tested with 5B grid. No color change, bubbling, peeling, falling, or change in gloss.

No visible abnormalities, 5B hardness achieved.

14

Contamination Resistance

Tested against lipstick, coffee, water-soluble ink, and black crayon, allowing at least 1 hour of contact at room temperature. The surface should remain clean after washing with tap or soapy water.

No visible contamination

15

QUV Test

UVA-313; Test Duration: 300 hours. After testing, paint surface should show no cracking, ΔE ≦ 3.0. Result: No cracking on paint surface, ΔE ≦ 3.0.

No cracking on paint surface

△≦E­3.0

16

Salt Spray Test

Salt Spray: Temperature 35°C, humidity 95%, sprayed with a 5% NaCl solution. After a continuous 96-hour exposure in salt spray environment, the product surface should show no rust or discoloration.

No visible abnormalities

17

Acidic Sweat Immersion

Immersion test: 23±2°C, immerse 50% of tested paint surface into artificial sweat (pH4.7) for 48 hours at room temperature. After 24 hours of resting, inspect appearance and ensure it meets adhesion requirements.

No visible abnormalities, 5B hardness achieved.

18

Alkaline Sweat Immersion

Immersion test: 23±2°C, immerse 50% of tested paint surface into artificial sweat (pH8.7) for 48 hours at room temperature. After 24 hours of resting, inspect appearance and ensure it meets adhesion requirements. Result:

No visible abnormalities, 5B hardness achieved.

All tests are performed on the company's standard ABS+PC board coated products, baked at 60°C for 10 hours and left at room temperature for 5 hours before testing.