Transparent polyimide film as well as preparation method and application thereof
A transparent polyimide and film technology, which is applied in semiconductor/solid-state device manufacturing, electric solid-state devices, semiconductor devices, etc., can solve the high temperature resistance, thermal stability, solvent resistance and mechanical durability of transparent polyimide films Problems such as decline, to achieve the effect of improving various performances, improving solvent resistance, and good solvent resistance
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Embodiment 1
[0048] Such as figure 1 Shown, a kind of preparation method of transparent polyimide film comprises the steps:
[0049] Step 1: Form a pre-crosslinking solution from metal oxygen clusters with exchange ligands and linear transparent polyimide with coordination exchange groups; Step 2: Coat the pre-crosslinking solution on the substrate, heat it up and peel off (not shown in the figure). Specific steps are as follows:
[0050] (1) Preparation of metal oxygen clusters with exchange ligands: Take 5 mL of titanium isopropoxide, 20 mL of ethylene glycol and 5 g of pivalic acid in a single-necked flask, and react for 24 h under air condensation and at 100 ° C. After the reaction is completed, the obtained The white powder was centrifuged and washed three times with ethanol, and dried at 60°C for 12h.
[0051] (2) Preparation of linear transparent polyimides with coordination exchange groups: The synthetic equation of linear transparent polyimides with coordination exchange group...
Embodiment 2
[0056] Such as figure 1 Shown, a kind of preparation method of transparent polyimide film comprises the steps:
[0057] Step 1: Form a pre-crosslinking solution from metal oxygen clusters with exchange ligands and linear transparent polyimide with coordination exchange groups; Step 2: Coat the pre-crosslinking solution on the substrate, heat it up and peel off (not shown in the figure). Specific steps are as follows:
[0058] (1) Preparation of metal oxygen clusters with exchange ligands: Take 5 mL of titanium isopropoxide, 20 mL of ethylene glycol and 5 g of pivalic acid in a single-necked flask, and react for 24 h under air condensation and at 100 ° C. After the reaction is completed, the obtained The white powder was centrifuged and washed three times with ethanol, and dried at 60°C for 12h.
[0059] (2) Preparation of linear transparent polyimides with coordination exchange groups:
[0060] Add 4 mmol of 4,4'-diamino-2,2'-bistrifluoromethylbiphenyl (TFMB) and 2 mmol o...
Embodiment 3
[0063] Such as figure 2 Shown is a method for preparing a flexible transparent composite electrode. The pre-crosslinking solution in Example 1 is poured on the silver nanowire electrode, and the film is peeled off after heating up. Specific steps are as follows:
[0064] (1) Preparation of silver nanowire electrodes: pre-treat a rigid glass substrate of 1.5 cm × 1.5 cm, then ultrasonically clean it with detergent, deionized water, acetone, and isopropanol for 10 minutes, dry it, and then clean it with ultraviolet ozone. Processed in the machine for 30min. Spin-coat silver nanowires on the surface of the pretreated glass substrate using a coater, and anneal at 150° C. for 10 minutes to obtain silver nanowire electrodes;
[0065] (2) Pouring the pre-crosslinking solution in Example 1 on the silver nanowire electrode, heating up (the specific way of heating up is starting from 30°C to 180°C and annealing step by step, starting from 30, 60, 90, 120°C respectively , 150 to 180°...
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Abstract
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