The establishment of anti-fingerprint lab evaluation method is the basis ofdevelopment of mobile cellphone screen and cellphone film.In this paper，the water contact angle on the surface of mobile phone membrane was measured to indicate the wettability of themain component of sweat on the surface of mobile phone membrane.The relationship betweenthe wettability of liquid on solid surface and the surface energy of solid was studied by drawingthe wettability envelope diagram，which was used to characterize the wettability of othercomponents in sweat on the surface of mobile phone membrane.On this basis，a method based on Young-Laplace equation was designed to fit and analyze the contact angle of distilled water anddiiodomethane on the surface of mobile phone membrane.The surface energy parameters of thetested samples were obtained by Owens-Wendt-Kaelble formula.Then the wettability envelopewas drawn，whose area S could be calculated by area method in order to evaluate the wettability of liquid on the solid surface.Combined with the water contact angle on the surface of mobilephone membrane，the anti-fingerprint effect of mobile phone membrane was analyzedcomprehensively. The anti-fingerprint effect of three kinds of mobile phone membranes wasanalyzed through experiments.The results showed that the evaluation method designed couldreasonably reflect the anti-fingerprint performance of mobile phone membranes.
GENG Jie
,
WEI Zhi-Yi
,
FAN Hai-Ming
,
FAN Yin-Liang
,
QI Xiang
,
LI Ling-Yu
. Research on Lab Evaluation Method for AF Coatings[J]. Paint & Coatings Industry, 2019
, 49(8)
: 53
-58
.
DOI: 10.12020/j.issn.0253-4312.2019.8.53
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