Single-layer electropositive organic photosensitive drum and preparation method thereof
A photosensitive drum, electropositive technology, applied in the field of photosensitive drums, can solve the problems of high cost, complex preparation process of multilayer organic photosensitive drums, poor photoelectric performance of organic photosensitive drums, etc. The effect of excellent film quality
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[0034] The present embodiment also provides the preparation method of above-mentioned monolayer electropositive organic photosensitive drum, and this method comprises the following steps:
[0035] S1. Dissolving polycarbonate PCZ-300 in tetrahydrofuran to prepare a film solution with a mass concentration of 5% to 15%;
[0036]S2. The Y-type-phthalocyanine titanium, N,N'-diphenyl-N,N'-bis-(3-methylphenyl)-1,1'-biphenyl-4,4'-bis Derivatives of amine and pyromellitic acid diamine are added to the above-mentioned film-forming agent solution according to the mass ratio of 1: (2-15): (1-10): (10-30) for mixing treatment to obtain coating solution;
[0037] Wherein, the structural formula of the derivative of pyromellitic acid diamine is:
[0038]
[0039] In the formula, R 1 At least one selected from hydrogen, deuterium, methyl, ethyl, propyl, isopropyl; R2 selected from at least one of hydrogen, deuterium, methyl, ethyl, propyl, isopropyl; R 3 At least one selected from hyd...
Embodiment 1
[0047] This embodiment provides a kind of N,N'-[4-(trifluoromethoxy)phenyl]-pyromellitic acid diamine (belonging to one of the derivatives of pyromellitic acid diamine) through the following steps be made of:
[0048] Under an inert atmosphere, add pyromellitic acid diamine, zinc acetate and acetic acid in a molar ratio to a reaction kettle containing 150ml of DMF; stir at room temperature for 0.5h, add 4-trifluoromethoxybenzylamine, and stir at 70°C for 3h , and then heated to 180 ° C and stirred for 12 hours; cooled to room temperature and added to 500ml of water, solids precipitated, filtered and dried, recrystallized with toluene to obtain white crystals, and then sublimated through a purification furnace to obtain high-purity N,N'-[4-( Trifluoromethoxy) phenyl]-pyromellitic acid diamine crystal, after calculation, its productive rate is 77.8%; The reaction formula of this preparation method is as follows:
[0049]
[0050] In order to verify the accuracy of the prepar...
Embodiment 2
[0054] This embodiment provides a single-layer positively charged organic photosensitive drum prepared through the following steps:
[0055] S1, a certain amount of polycarbonate PCZ-300 is dissolved in tetrahydrofuran to form a film-forming agent solution with a mass concentration of 10%;
[0056] S2. Take 500g 10% PCZ-300 solution, add 5g Y-type phthalocyanine titanium oxide, disperse evenly with a ball mill, and then add 30g N,N'-diphenyl-N,N'-bis-(3-methyl Phenyl)-1,1'-biphenyl-4,4'-diamine (m-TPD), 10g of derivatives of pyromellitic acid diamine, fully stirred and dissolved to form a coating solution;
[0057] S3, using the dip coating method, coating the coating solution on the After drying at 50°C for 3 hours, a single-layer organic photosensitive drum with a photosensitive layer thickness of 15 μm was obtained.
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