A kind of fluorine-containing polyimide humidity sensitive capacitor and preparation method thereof
A humidity-sensitive capacitor and polyimide technology, applied in capacitors, electrical components, etc., can solve the problems of poor sensitivity, accuracy, and resolution, and achieve the effects of convenient source, mild reaction conditions, and easy molecular structure
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Embodiment 1
[0031] 3.66 g (0.01 mole) of 2,2-bis(3-amino-4-hydroxyphenyl) hexafluoropropane (BAHPFP), 22.00 g (0.11 mole) of 3,3'-diaminodiphenyl ether, 35.89 g ( 0.122 moles) of 3,3',4,4'-tetracarboxybiphenyl dianhydride and 248 grams of N,N-dimethylacetamide were put into the reactor, and after stirring and reacting for 2 hours at 0°C, 309.55 grams of viscous Thick transparent homogeneous fluorine-containing moisture-sensitive polyimide precursor solution, denoted as HSP-1.
Embodiment 2
[0033] 3.66 g (0.01 mol) of 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane (BAHPFP), 20.00 g (0.10 mol) of 3,4'-diaminodiphenyl ether and 31.70 g ( 0.10 moles) 2,6-bis(4-aminophenoxy) benzonitrile, 66.07 grams (0.213 moles) 3,3',4,4'-tetracarboxydiphenyl ether dianhydride, 428 grams of N,N- Dimethylacetamide and 300 grams of N-methyl-2-pyrrolidone were put into the reaction kettle, and after stirring and reacting at 5°C for 5 hours, 849.43 grams of viscous, transparent and homogeneous fluorine-containing moisture-sensitive polyimide precursors were obtained solution, denoted as HSP-2.
Embodiment 3
[0035] 3.66 g (0.01 mol) of 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane (BAHPFP), 29.7 g (0.15 mol) of 4,4'-diaminodiphenylmethane, 35.89 g ( 0.122 moles) of 3,3',4,4'-tetracarboxybiphenyl dianhydride and 18.65 grams (0.042 moles) of 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride, 440 grams of N , N-dimethylacetamide was put into the reaction kettle, and after stirring and reacting at 2°C for 4 hours, 527.90 g of a viscous, transparent and homogeneous fluorine-containing moisture-sensitive polyimide precursor solution was obtained, which was designated as HSP-3.
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