Bi2S3-BaTiO3/PVDF composite material and preparation method thereof
A bi2s3-batio3, composite material technology, applied in fixed capacitor parts, fixed capacitor dielectrics and other directions, can solve the problem of low dielectric constant, and achieve the effects of low inorganic content, good machining performance and simple preparation method
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[0035] Example 1 Preparation volume percentage f Bi2S3 =0.03 composite material. Specific steps are as follows:
[0036] (1) According to the volume percentage f Bi2S3 =0.03, f BaTiO3 = 0.20, f PVDF =0.77, weigh the raw materials. The volume fraction is replaced by the mass number, the raw materials are 0.0790g, 0.3900g, 0.4620g, and the experimental raw materials are weighed.
[0037] (2) Add the weighed PVDF to 40ml of N,N-dimethylformamide (DMF), and fully dissolve it to form a transparent solution.
[0038] (3) Put the weighed BaTiO 3 And Bi 2 S 3 Nanorods were added to the above transparent solution, and ultrasonically oscillated for 20 minutes to make Bi 2 S 3 , BaTiO 3Evenly dispersed in the solution to form a stable suspension.
[0039] (4) Pour the above-mentioned suspension into a watch glass and place it in an oven at 100°C for drying to obtain a dielectric film.
[0040] (5) Hot press the above dielectric film and test the dielectric properties. Hot pressing conditio...
Example Embodiment
[0042] Example 2: Preparation volume percentage f Bi2S3 =0.12 composite material. Specific steps are as follows:
[0043] (1) According to the volume percentage f Bi2S3 =0.12, f BaTiO3 = 0.20, f PVDF =0.69 Weigh the raw materials. The volume fraction is replaced by the mass number, the raw materials are 0.3160g, 0.3900g, 0.4140g, and the experimental raw materials are weighed.
[0044] (2) Add the weighed PVDF to 30ml of N,N-dimethylformamide (DMF) and fully dissolve it to form a transparent solution.
[0045] (3) Put the weighed BaTiO 3 And Bi 2 S 3 Add to the above transparent solution, ultrasonically shake for 20min, make Bi 2 S 3 , BaTiO 3 Evenly dispersed in the solution to form a stable suspension.
[0046] (4) Pour the above-mentioned suspension into a watch glass and place it in an oven at 100°C for drying to obtain a dielectric film.
[0047] (5) Hot press the above dielectric film and test the dielectric properties. Hot pressing conditions: 210℃, 10MPa, 25min.
[0048]...
Example Embodiment
[0049] Example 3: Preparation volume percentage f Bi2S3 =0.11 composite material. Specific steps are as follows:
[0050] (1) According to the volume percentage f Bi2S3 =0.11, f BaTiO3 = 0.20, f PVDF =0.69 Weigh the raw materials, change the volume fraction to the mass number, the raw materials are respectively: 0.2900g, 0.3900g, 0.4140g, and weigh the experimental raw materials.
[0051] (2) Add the weighed PVDF to 35ml of N,N-dimethylformamide (DMF), and fully dissolve it to form a transparent solution.
[0052] (3) Put the weighed BaTiO 3 And Bi 2 S 3 Add to the above transparent solution, ultrasonically shake for 20min, make Bi 2 S 3 , BaTiO 3 Evenly dispersed in the solution to form a stable suspension.
[0053] (4) Pour the above-mentioned suspension into a watch glass and place it in an oven at 100°C for drying to obtain a dielectric film.
[0054] (5) Hot pressing test dielectric properties. The dielectric film was hot pressed and its dielectric properties were tested. T...
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