Gas layer formation materials
A gas layer, polymer layer technology, applied in electrical components, electrical solid devices, semiconductor devices, etc., can solve problems such as inability to meet industrial requirements and undesired integration solutions
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Embodiment 1
[0134] The preparation of the copolymer of embodiment 1-acenaphthene and vinyl pivalate of the present invention:
[0135] A thermally degradable polymer comprising a copolymer of acenaphthene and vinyl pivalate was prepared as follows. To a 250 mL flask equipped with a magnetic stirrer was added 20 g of technical grade acenaphthene, 3.1579 g (0.0246 mol) of vinyl pivalate, 0.5673 g (2.464 mmol) of di-tert-butyl azodicarboxylate and 95 mL xylene. The mixture was stirred at room temperature for ten minutes until a homogeneous solution was obtained. The reaction solution was then degassed for five minutes under reduced pressure and purged with nitrogen. Repeat the process three times. The reaction mixture was then heated to 140°C under nitrogen for six hours. The solution was cooled to room temperature and added dropwise to 237 mL of ethanol. The mixture was stirred at room temperature for another 20 minutes. The precipitate formed was collected by filtration and dried und...
Embodiment 3
[0139] The preparation of the copolymer of embodiment 3-acenaphthene and vinyl acetate of the present invention:
[0140] A thermally degradable polymer comprising a copolymer of acenaphthene and vinyl acetate was prepared as follows. To a 250 mL flask equipped with a magnetic stirrer was added 20 g of technical grade acenaphthene, 1.6969 g (0.01971 mol) of vinyl acetate, 0.3884 g (2.365 mmol) of 2,2'-azobisisobutyronitrile and 88 mL of di toluene. The mixture was stirred at room temperature for 10 minutes until a homogeneous solution was obtained. The reaction solution was then degassed under reduced pressure for 5 minutes and purged with nitrogen. Repeat the process three times. The reaction mixture was then heated to 70°C under nitrogen for 24 hours. The solution was cooled to room temperature and added dropwise to 220 mL of ethanol. The mixture was stirred at room temperature for another 20 minutes. The precipitate formed was collected by filtration and dried under v...
Embodiment 4
[0141] The preparation of embodiment 4-polyacenaphthene homopolymer of the present invention:
[0142] Polymers of acenaphthylene were prepared as follows. To a 250 mL flask equipped with a magnetic stirrer was added 30 g of technical grade acenaphthene, 0.3404 g of di-tert-butyl azodicarboxylate (1.478 mmol) and 121 mL of xylene. The mixture was stirred at room temperature for 10 minutes until a homogeneous solution was obtained. The reaction solution was then degassed for five minutes under reduced pressure and purged with nitrogen.
[0143] Repeat the process three times. The reaction mixture was then heated to 140°C under nitrogen for six hours. The solution was cooled to room temperature and added dropwise to 303 mL of ethanol. The mixture was stirred at room temperature for another 20 minutes.
[0144] The precipitate formed was collected by filtration and dried under vacuum. The properties of the resulting homopolymers are listed as homopolymers in Table 6 below, ...
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Abstract
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