PRODUCT PARAMETERS
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Test item
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Unit symbol
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Standard requirements (Type 1 paint)
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Test results
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Status in container
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_
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After mixing, there is no hard lump and it is in a uniform state
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After mixing, there is no hard lump and it is in a uniform state
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No volatile matter content
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μm
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≤40
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<30
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Fineness
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μm
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≤40
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Drying time
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Surface dry/h
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2
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1
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Actual drying/h
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24
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24
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Resistance to impact
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cm
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≥40
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50
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Cross cut test (1 mm interval)
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Level
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≤1
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1
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Storage stability (50C±2℃/7d)
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----
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No abnormality
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No abnormality
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Gloss (60")
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%
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---
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Haute couture
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Bending test
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mm
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2
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2
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Film appearance
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---
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normal
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normal
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Pencil hardness (scratch)
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---
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≥2B
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B
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Water resistance
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---
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24h no foaming, no shedding, allow slight discoloration
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Conform
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Volatile organic compounds content (voc)
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g/L
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≤150
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2
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Soluble heavy metals
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Pb mg/kg
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≤90
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<5
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Cd mg/kg
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≤75
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<5
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Cr mg/kg
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≤60
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<5
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Hg mg/kg
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≤60
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<5
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Salt fog resistance
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---
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96h does not blister, rust, or fall off, allowing slight discoloration
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120h does not blister, rust, or fall off, allowing slight discoloration
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