Method for manufacturing a fluororesin molded article, and fluororesin molded article
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- DAIKIN INDUSTRIES LTD
- Filing Date
- 2025-12-04
- Publication Date
- 2026-06-16
AI Technical Summary
【0046】 本開示によれば、フィラーの特性を損なわずにフッ素樹脂成形体を得ることが可能なフッ素樹脂成形体の製造方法、及び、フッ素樹脂成形体を提供することができる。
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Figure 2026097780000001_ABST
Abstract
Claims
1. A method for manufacturing a fluororesin molded article, comprising the step of obtaining a fluororesin molded article by molding a molding material containing a fluororesin and a filler using an electromagnetic wave irradiation molding apparatus.
2. The electromagnetic wave irradiation molding apparatus is equipped with a special mold capable of molding at a temperature of 250°C or higher, and the special mold comprises a metal mold into which the molding material is fed and a heating element, as described in claim 1.
3. The manufacturing method according to claim 2, wherein the metal mold has durability against fluororesin.
4. The manufacturing method according to claim 2 or 3, wherein the heat-generating portion includes an electromagnetic wave absorber.
5. The manufacturing method according to claim 2 or 3, wherein the special mold further comprises an insulating portion around the metal mold and the heating portion.
6. The manufacturing method according to claim 2 or 3, wherein the special mold is heated under reduced pressure conditions to form the molding material.
7. The manufacturing method according to claim 1 or 2, wherein the electromagnetic wave is a microwave.
8. The manufacturing method according to claim 1 or 2, wherein the molding material comprises composite particles formed by compounding the fluororesin and the filler.
9. The manufacturing method according to claim 1 or 2, wherein the molding material comprises composite particles obtained by compression molding or melting and crushing the fluororesin particles and the filler, which are compounded by a friction mill.
10. The manufacturing method according to claim 1 or 2, wherein the fluororesin is at least one selected from the group consisting of polytetrafluoroethylene, tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymer, tetrafluoroethylene / hexafluoropropylene copolymer, ethylene / tetrafluoroethylene copolymer, polychlorotrifluoroethylene, and ethylene / chlorotrifluoroethylene copolymer.
11. The manufacturing method according to claim 1 or 2, wherein the fluororesin is at least one selected from the group consisting of polytetrafluoroethylene, tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymer, tetrafluoroethylene / hexafluoropropylene copolymer, and polychlorotrifluoroethylene.
12. The manufacturing method according to claim 1 or 2, wherein the filler is a conductive filler.
13. The manufacturing method according to claim 1 or 2, wherein the filler is a carbon nanotube.
14. The manufacturing method according to claim 13, wherein the carbon nanotube is at least one selected from the group consisting of multi-walled carbon nanotubes and single-walled carbon nanotubes.
15. The manufacturing method according to claim 13, wherein the G / D ratio of the carbon nanotube is 0.5 or more.
16. The manufacturing method according to claim 1 or 2, wherein the content of the filler is 0.01 to 2.0% by mass relative to the total amount of the fluororesin and the filler.
17. The manufacturing method according to claim 1 or 2, wherein the content of the filler is 0.05 to 0.4% by mass with respect to the total amount of the fluororesin and the filler.
18. The manufacturing method according to claim 1 or 2, wherein the molding material is obtained by mixing the fluororesin powder and the filler powder.
19. A fluororesin molded article obtained by the manufacturing method described in claim 1.
20. It contains a fluororesin and a filler of 0.5% by mass or less, and has a volume resistivity of 1.0 × 10 ９ A fluororesin molded article with a density of Ω·cm or less.
21. The fluororesin molded article according to claim 20, wherein the fluororesin is at least one selected from the group consisting of polytetrafluoroethylene, tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymer, tetrafluoroethylene / hexafluoropropylene copolymer, and polychlorotrifluoroethylene.
22. A fluororesin molded article according to claim 20 or 21, obtained from composite particles formed by compounding the fluororesin particles obtained by compression molding or melting and crushing with the filler using a friction mill.
23. The material comprises at least one fluororesin selected from the group consisting of tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymer and tetrafluoroethylene / hexafluoropropylene copolymer, and 0.5% by mass or less of a filler, with a volume resistivity of 1.0 × 10⁻⁶ ９ A fluororesin molded article with a density of Ω·cm or less.
24. The fluororesin molded article according to claim 20 or 23, wherein the filler is a conductive filler.
25. The fluororesin molded article according to claim 20 or 23, wherein the filler is a carbon nanotube.
26. The fluororesin molded article according to claim 20 or 23, wherein the content of the filler is 0.05 to 0.4% by mass with respect to the total amount of the fluororesin and the filler.
27. Volume resistivity is 1.0 × 10⁻⁶ ２ ~8.0 x 10 ８ A fluororesin molded article according to claim 20 or 23, wherein the value is Ω·cm.
28. A fluororesin molded article comprising a fluororesin and a filler of 50% by mass or less, wherein the thermal conductivity is 0.3 W / m·K or higher.
29. The fluororesin molded article according to claim 28, wherein the fluororesin is at least one selected from the group consisting of polytetrafluoroethylene, tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymer, tetrafluoroethylene / hexafluoropropylene copolymer, and polychlorotrifluoroethylene.
30. A fluororesin molded article according to claim 28 or 29, obtained from composite particles formed by compounding the fluororesin particles obtained by compression molding or melting and crushing with the filler using a friction mill.
31. The fluororesin molded article according to claim 28 or 29, wherein the filler is a thermally conductive filler.
32. The fluororesin molded article according to claim 28 or 29, wherein the filler is aluminum nitride.
33. The fluororesin molded article according to claim 28 or 29, wherein the content of the filler is 10 to 40% by mass of the total amount of the fluororesin and the filler.
34. A fluororesin molded article according to claim 28 or 29, wherein the thermal conductivity is 0.4 to 20 W / m·K.
35. A fluororesin molded article containing a fluororesin and a filler, with an orientation degree of 56% or less.
36. The fluororesin molded article according to claim 35, wherein the fluororesin is at least one selected from the group consisting of polytetrafluoroethylene, tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymer, tetrafluoroethylene / hexafluoropropylene copolymer, and polychlorotrifluoroethylene.
37. The fluororesin molded article according to claim 35 or 36, wherein the filler is a conductive filler.
38. The fluororesin molded article according to claim 35 or 36, wherein the filler is a carbon nanotube.
39. A fluororesin molded article according to claim 35 or 36, wherein the degree of orientation is 35% or less.
40. A fluororesin molded article according to any one of claims 20, 23, 28, and 35, obtained from a mixture of the fluororesin powder and the filler powder.
41. A fluororesin molded article according to any one of claims 19, 20, 23, 28, and 35, used in at least one selected from the group consisting of lining sheets, packings, gaskets, diaphragm valves, heat-resistant wires, heat-resistant tapes, release sheets, sealing materials, casings, sleeves, bellows, hoses, piston rings, butterfly valves, rectangular tanks, wafer carriers, circuit boards, nuts, bolts, fittings, semiconductor components, optical lens components, solar cell panel films, and OA rolls.