Polymer-based dielectric materials and film capacitors
A technology of thin film capacitors and dielectric materials, applied in thin film/thick film capacitors, stacked capacitors, fixed capacitor dielectrics, etc., can solve problems such as complex process, high cost, and decreased breakdown strength of composites, and achieve low energy storage density , The effect of high electric field breakdown strength
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Embodiment 1
[0045] The polymer-based dielectric material provided in this embodiment includes a polymer matrix made of polyvinylidene fluoride (hereinafter referred to as PVDF) and a dielectric filler ZnS uniformly filled inside the polymer matrix. 0.8 o 0.2 ; In other words, the chemical formula of the dielectric filler provided by the present embodiment is ZnS 1-i o i , where i=0.2. The dielectric filler is formed by replacing 20% of the S atoms in the ZnS crystal with O atoms, and is a distorted ZnS unit cell structure.
[0046] Specifically, the amount of dielectric filler in the polymer-based dielectric material of this embodiment is 3.38 mg, 85.51 mg, 1.01 g, and 3.04 g; which correspond to volume additions of 0.1%, 2.53%, 30%, and 90%, respectively. .
[0047] The above dielectric filler ZnS 0.8 o 0.2 The specific preparation method is as follows: (1) Zinc acetate dihydrate, thioacetamide and sodium hydroxide are weighed according to the ratio of the amount of substances of...
Embodiment 2
[0051] In the description of Embodiment 2, the similarities with Embodiment 1 will not be repeated here, and only the differences with Embodiment 1 will be described. The difference between Example 2 and Example 1 is that in the polymer-based dielectric material in Example 2, the dielectric filler is ZnS 0.6 o 0.4 , and the dosages thereof are 3.26mg, 82.5mg, 0.98g, 2.94g; they correspond to volume additions of 0.1%, 2.53%, 30%, and 90%, respectively.
[0052] Correspondingly, in the preparation process of the dielectric filler, the zinc source zinc acetate dihydrate, the sulfur source thioacetamide and the oxygen source sodium hydroxide are respectively controlled to weigh according to the ratio of the amount of substances to 1:0.6:0.4; The rest are prepared with reference to the description in Example 1 to obtain powdery products.
[0053] XRD test was carried out to this powdery product, as figure 1 shown. From figure 1 It can be seen that compared with pure ZnS, no ne...
Embodiment 3
[0056] In the description of Embodiment 3, the similarities with Embodiment 1 will not be repeated here, and only the differences with Embodiment 1 will be described. The difference between Example 3 and Example 1 is that in the polymer-based dielectric material in Example 3, the dielectric filler is ZnS 0.99 o 0.01 , and the dosages thereof are 3.49mg, 88.3mg, 1.05g, 3.141g; they correspond to volume additions of 0.1%, 2.53%, 30%, and 90%, respectively.
[0057] Correspondingly, in the preparation process of the dielectric filler, the zinc source zinc acetate dihydrate, the sulfur source thioacetamide and the oxygen source sodium hydroxide are respectively controlled to weigh according to the ratio of the amount of substances to 1:0.99:0.01; The rest are prepared with reference to the description in Example 1 to obtain powdery products.
[0058] In this example, the same preparation method as in Example 1 was used to prepare ZnS with dielectric filler 0.99 o 0.01 film-lik...
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Abstract
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