Polyimide-based film and display device including same
A technology of polyimide and film, which is applied in the field of polyimide film, which can solve the problems of poor appearance and reduced rigidity, and achieve excellent surface recovery, excellent scratch resistance and strength, and prevent the effect of poor appearance
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Embodiment 1
[0090] Under a nitrogen atmosphere, dichloromethane, pyridine, terephthaloyl chloride (TPC) and 2,2'-bis(trifluoromethyl)-benzidine (TFMB) were added to the reactor, and stirred at 25°C for 2 hours . At this time, the molar ratio of TPC:TFMB was set to 86:100, and the solid content was adjusted to 10% by weight.
[0091] Afterwards, the reactant was precipitated in excess methanol, and then filtered to obtain a solid, and the solid was vacuum-dried at 50°C for more than 6 hours to obtain an amide oligomer, and the prepared amide The molecular weight (FW) of the oligomer was 1670 g / mol.
[0092] Under a nitrogen atmosphere, in a reactor, add the oligomer in N,N-dimethylacetamide (DMAc) and stir well, then add 14 moles of 4,4' to 100 moles of TFMB - (hexafluoroisopropylene) diphthalic anhydride (6FDA), fully stirred until dissolved, and reacted to obtain a polyamic acid resin composition. The solid content of each monomer was adjusted to 6.5% by weight. With respect to the m...
Embodiment 2
[0095] Under a nitrogen atmosphere, dichloromethane, pyridine, terephthaloyl chloride (TPC) and 2,2'-bis(trifluoromethyl)-benzidine (TFMB) were added to the reactor, and stirred at 25°C for 2 Hour. At this time, the molar ratio of TPC:TFMB was set to 71:100, and the solid content was adjusted to 10% by weight.
[0096] Afterwards, the reactant was precipitated in excess methanol, and then filtered to obtain a solid, and the solid was vacuum-dried at 50°C for more than 6 hours to obtain an amide oligomer, and the prepared amide The molecular weight (FW) of the oligomer was 1580 g / mol.
[0097] Under a nitrogen atmosphere, in a reactor, add the oligomer in N,N-dimethylacetamide (DMAc) and stir well, then add 11 moles of 4,4' to 100 moles of TFMB - (hexafluoroisopropylene) diphthalic anhydride (6FDA) and 18 moles of biphenyltetracarboxylic dianhydride (BPDA), fully stirred until dissolved, and reacted to prepare a polyamic acid resin composition. The solid content of each mono...
Embodiment 3
[0100] It manufactured by the same method as the said Example 1 except having made the polyamide-imide film into 80 micrometers. At this time, the residual solvent content of the polyamide-imide film was 0.45% by weight.
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Abstract
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