Performance testing method of water sensitive humidity-controlling coating
A test method and water-sensitive technology, which can be used in testing wear resistance, scattering characteristics measurement, optical testing flaws/defects, etc., can solve problems such as energy consumption, and achieve the effects of low cost, short period, and improved test efficiency.
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Embodiment 1
[0043]Visually observe whether the coating film has pinholes, sags, flatness, color blooming, etc. If there is no phenomenon, it is considered "normal"; contrast ratio: on a colorless and transparent polyester film (thickness 30 μm), or on a bottom Apply the tested paint evenly on black and white boards with half and half colors, and place it for at least 24hrs, and use a reflectance meter to measure the reflectance of the coating film on the black and white bottom surface; water resistance: use a mixture of paraffin wax and rosin (mass ratio 1:1) After immersing in the third grade water specified in GB / T6682 behind the edge sealing, if two of the three boards do not show blistering, powder dropping, obvious discoloration, etc., it can be rated as "no abnormality"; alkali resistance: take Three test panels, sealed with paraffin and rosin mixture (mass ratio 1:1), sealed at the back, immersed in 0.12% Ca(OH)2 saturated solution at 23±2°C, two of them did not appear within the sp...
Embodiment 2
[0045] Visually observe whether the coating film has pinholes, sags, flatness, and color blooming. If there is no phenomenon, it is considered "normal"; contrast ratio: on a colorless and transparent polyester film (thickness 40 μm), or on a Apply the tested paint evenly on black and white boards with half and half colors, and place it for at least 24hrs, and use a reflectance meter to measure the reflectance of the coating film on the black and white bottom surface; water resistance: use a mixture of paraffin wax and rosin (mass ratio 1:1) After immersing in the third grade water specified in GB / T6682 behind the edge sealing, if two of the three boards do not show blistering, powder dropping, obvious discoloration, etc., it can be rated as "no abnormality"; alkali resistance: take Three test panels, sealed with paraffin and rosin mixture (mass ratio 1:1), sealed at the back, immersed in 0.12% Ca(OH)2 saturated solution at 23±2°C, two of them did not appear within the specified...
Embodiment 3
[0047] Visually observe whether the coating film has pinholes, sags, flatness, and color blooming. If there is no phenomenon, it is considered "normal"; contrast ratio: on a colorless and transparent polyester film (thickness 50 μm), or on Apply the tested paint evenly on black and white boards with half and half colors, and place it for at least 24hrs, and use a reflectance meter to measure the reflectance of the coating film on the black and white bottom surface; water resistance: use a mixture of paraffin wax and rosin (mass ratio 1:1) After immersing in the third-grade water specified in GB / T6682 behind the edge sealing, if two of the three boards do not show blistering, powder dropping, or obvious discoloration, it can be rated as "no abnormality"; alkali resistance: take For three test panels, use a mixture of paraffin wax and rosin (mass ratio 1:1) to seal the edges and seal the back. At 23±2°C, immerse in a 0.12% Ca(OH)2 saturated solution, and two of them do not appear...
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