Resin composition, cured product, formed body and manufacturing method thereof, and film capacitor and manufacturing method thereof
A resin composition for casting, containing a curable component, a first filler, and a second filler that is different from the first filler, in which a ratio of a major axis of the first filler with respect to a thickness of the first filler is 3 to 25. A molded body including an element and a sealing portion that seals the element, in which the sealing portion contains the resin composition or a cured product thereof.
1. A resin composition for casting, comprising a curable component, a first filler containing expandable graphite, and a second filler that is different from the first filler,
wherein a ratio of a major axis of the first filler with respect to a thickness of the first filler is 3 or more and less than 20.
2. The resin composition according to claim 1 , wherein the curable component includes an epoxy resin.
3. The resin composition according to claim 1 , wherein a viscosity of the resin composition when measured using a B type viscometer under conditions of 40° C. and 60 rpm is 8.0 Pa·s or less.
4. The resin composition according to claim 1 , wherein the first filler further contains melamine cyanurate.
5. The resin composition according to claim 1 , wherein the second filler contains silica.
6. A cured product of the resin composition according to claim 1 .
7. A molded body comprising: an element and a sealing portion that seals the element,
wherein the sealing portion contains the resin composition according to claim 1 or a cured product thereof.
8. A method for producing a molded body, the method comprising casting the resin composition according to claim 1 to obtain a molded body.
9. A film capacitor comprising: a film capacitor element and a sealing portion that seals the film capacitor element,
wherein the sealing portion contains the resin composition according to claim 1 or a cured product thereof.
10. A method for producing a film capacitor, the method comprising casting the resin composition according to claim 1 to obtain a film capacitor comprising a sealing portion that seals a film capacitor element.
11. The resin composition according to claim 1 , wherein the curable component includes a curable resin, and
a content of the curable resin is 18% by mass or more based on a total mass of the resin composition.
12. The resin composition according to claim 1 , wherein the first filler further contains at least one selected from the group consisting of scale-like graphite, melamine cyanurate, and wollastonite.
13. The resin composition according to claim 1 , wherein the major axis of the first filler is 5 to 800 μm.
14. The resin composition according to claim 1 , wherein a content of the first filler is 9% by mass or less based on a sum amount of the first filler and the second filler.
15. The resin composition according to claim 1 , wherein a content of the first filler is 1.5% to 30% by mass based on a total mass of the resin composition.
16. The resin composition according to claim 1 , wherein the second filler contains carbon black.
17. The resin composition according to claim 1 , wherein the second filler contains aluminum hydroxide.
18. The resin composition according to claim 1 , wherein a particle size of the second filler is 3 to 30 μm.
19. The resin composition according to claim 1 , wherein a content of the second filler is 30% to 90% by mass based on a total mass of the resin composition.
20. A resin composition for casting, comprising a curable component, a first filler containing melamine cyanurate, and a second filler containing silica,
wherein a ratio of a major axis of the first filler with respect to a thickness of the first filler is 3 to 25, and
a content of the silica is 30 to 55.8 mass % based on a total mass of the resin composition.