序号

项目/Item

指标/Technical indicator

1

反射率/Reflectivity

太阳反射率ρs≥0.83/
Solar reflectivityps≥0.83

2

发射率/Emissivity

半球发射率εh≥ 0.86/
Hemisphere Emissivityεh≥0.86

3

漆膜干燥时间/Drying duration of paint film（25℃，湿度50%）

表干≤30min；实干≤48h
Surface drying≤30min；hard dying≤48h

4

附着力（划圈法）adhesion（circle drawing method）

一级 
Level I

5

耐弯曲性/Resistance to bend（mm）≤

  2

6

冷脆性
Cold brittleness

-50℃不脆裂
No brittle fracture at -50℃

7

热粘性
Thermal visistance

70℃不粘连
No adhesion at 70℃

8

耐盐雾（500h）
Salt mist resistance

通过

9

耐水性
Water tolerance

168h无起泡、剥落
No bubble and peeling after 168h

10

耐碱性
Alkali resistance

48h无起泡、剥落
No bibble and peeling after 48h

11

耐沾污性
Stain resistance

≤10%

12

耐候性
Weather resistance

人工加速老化3000h不起泡、不剥落、无裂纹/
Manually accelerate its for 3000h，it turns pink instead of yellow and peels

13

阻燃性
Flame retardant resistance

离火3s自熄碳化
Self-extinguished and carbonized within 3s away from fire