Plastic optical fiber and plastic optical fiber code
A plastic optical fiber comprising a core and a cladding, wherein the cladding comprises at least one layer, and the cladding comprises a copolymer which comprises 10 to 35% by weight of ethylene, 45 to 69% by weight of tetrafluoroethylene, 20 to 45% by weight of hexafluoropropylene, and 0.01 to 10% by weight of a fluorovinyl compound represented by Formula (1): CH 2 ═CX 1 (CF 2 ) n X 2 (wherein X 1 represents a fluorine atom or a hydrogen atom, X 2 represents a fluorine atom, a hydrogen atom, or a hydrocarbon group, and n represents an integer from 1 to 10) as a copolymer component.
1. A plastic optical fiber comprising a core and a cladding, wherein the cladding comprises at least one layer, and the cladding comprises a copolymer which comprises 10 to 35% by weight of ethylene, 45 to 69% by weight of tetrafluoroethylene, 20 to 45% by weight of hexafluoropropylene, and 0.01 to 10% by weight of a fluorovinyl compound represented by Formula (1):
CH 2 ═CX 1 (CF 2 ) n X 2 (1)
(wherein X 1 represents a fluorine atom or a hydrogen atom, X 2 represents a fluorine atom, a hydrogen atom, or a hydrocarbon group, and n represents an integer from 1 to 10) as a copolymer component.
2. The plastic optical fiber according to claim 1 , wherein the fluorovinyl compound is a compound represented by Formula (2):
CH 2 ═CF(CF 2 ) 3 H (2).
3. The plastic optical fiber according to claim 1 , wherein the cladding comprises two or more layers, and the cladding of an outermost layer comprises a copolymer which comprises 10 to 35% by weight of ethylene, 45 to 69% by weight of tetrafluoroethylene, 20 to 45% by weight of hexafluoropropylene, and 0.01 to 10% by weight of a fluorovinyl compound represented as follows:
CH 2 ═CX 1 (CF 2 ) n X 2
(wherein X 1 represents a fluorine atom or a hydrogen atom, X 2 represents a fluorine atom, a hydrogen atom, or a hydrocarbon group, and n represents an integer from 1 to 10) as a copolymer component.
4. The plastic optical fiber according to claim 3 , wherein the cladding of an innermost layer comprises a copolymer which comprises vinylidene fluoride and tetrafluoroethylene as a copolymer component.
5. The plastic optical fiber according to claim 4 , wherein the cladding of the innermost layer comprises a copolymer which comprises 65 to 85% by weight of vinylidene fluoride and 15 to 35% by weight of tetrafluoroethylene as a copolymer component.
6. The plastic optical fiber according to claim 4 , wherein the cladding of the innermost layer comprises a copolymer which comprises 35 to 60% by weight of vinylidene fluoride, 35 to 60% by weight of tetrafluoroethylene, and 5 to 30% by weight of hexafluoropropylene as a copolymer component.
7. The plastic optical fiber according to claim 4 , wherein the cladding of the innermost layer comprises a copolymer which comprises 10 to 35% by weight of vinylidene fluoride, 45 to 75% by weight of tetrafluoroethylene, 10 to 30% by weight of hexafluoropropylene, and 1 to 10% by weight of perfluoroalkyl vinyl ethers as a copolymer component.
8. The plastic optical fiber according to claim 3 , wherein the cladding of the innermost layer comprises a copolymer which comprises a perfluoroalkyl methacrylate unit.
9. The plastic optical fiber according to claim 8 , wherein the cladding of the innermost layer comprises a copolymer which comprises 60 to 95% by weight of perfluoroalkyl methacrylate that is represented by formula:
CH 2 ═C(CH 3 )—COO(CH 2 ) m (CF 2 ) n R
(wherein R represents a fluorine atom or a hydrogen atom, m is 1 or 2, and n represents an integer from 1 to 10) and 5 to 40% by weight of methyl methacrylate as a copolymer component.
10. The plastic optical fiber according to claim 1 , wherein the cladding comprises two or more layers, and the cladding of an innermost layer comprises a copolymer which comprises 10 to 35% by weight of ethylene, 45 to 69% by weight of tetrafluoroethylene, 20 to 45% by weight of hexafluoropropylene, and 0.01 to 10% by weight of a fluorovinyl compound represented as follows:
CH 2 ═CX 1 (CF 2 ) n X 2
(wherein X 1 represents a fluorine atom or a hydrogen atom, X 2 represents a fluorine atom, a hydrogen atom, or a hydrocarbon group, and n represents an integer from 1 to 10) as a copolymer component.
11. The plastic optical fiber according to claim 10 , wherein the cladding of an outermost layer comprises a copolymer which comprises vinylidene fluoride and tetrafluoroethylene as a copolymer component.
12. The plastic optical fiber according to claim 11 , wherein the cladding of the outermost layer comprises a copolymer which comprises 65 to 85% by weight of vinylidene fluoride and 15 to 35% by weight of tetrafluoroethylene as a copolymer component.
13. The plastic optical fiber according to claim 11 , wherein the cladding of the outermost layer comprises a copolymer which comprises 35 to 60% by weight of vinylidene fluoride, 35 to 60% by weight of tetrafluoroethylene; and 5 to 30% by weight of hexafluoropropylene as a copolymer component.
14. The plastic optical fiber according to claim 11 , wherein the cladding of the outermost layer comprises a copolymer which comprises 10 to 35% by weight of vinylidene fluoride, 45 to 75% by weight of tetrafluoroethylene, 10 to 30% by weight of hexafluoropropylene, and 1 to 10% by weight of perfluoroalkyl vinyl ethers as a copolymer component.
15. The plastic optical fiber according to claim 10 , wherein the cladding of an outermost layer comprises a copolymer which comprises a perfluoroalkyl methacrylate unit.
16. The plastic optical fiber according to claim 15 , wherein the cladding of the outermost layer comprises a copolymer which comprises 60 to 95% by weight of perfluoroalkyl methacrylate that is represented by formula:
CH 2 ═C(CH 3 )—COO(CH 2 ) m (CF 2 ) n R
(wherein R represents a fluorine atom or a hydrogen atom, m is 1 or 2, and n represents an integer from 1 to 10) and 5 to 40% by weight of methyl methacrylate as a copolymer component.
17. The plastic optical fiber cord according to claim 1 , further comprising at least one more coating layers on an outer periphery of the cladding.
18. The plastic optical fiber cord according to claim 17 , wherein the coating layer comprises a thermoplastic resin as a main component.
19. The plastic optical fiber cord according to claim 18 , wherein the thermoplastic resin is at least one selected from the group consisting of a polyolefin resin, a polyamide resin, polyvinyl chloride, a polyester resin, a polyester elastomer, a polyamide elastomer, a polyolefin elastomer, a cross-linked polyolefin, a polyurethane elastomer resin, and an ethylene-vinyl acetate copolymer.
20. The plastic optical fiber cord according to claim 19 , wherein the polyolefin is polyethylene or polypropylene.
21. The plastic optical fiber cord according to claim 17 , wherein the coating layer of an innermost layer is a coating layer comprising polyamide as a main component.
22. The plastic optical fiber cord according to claim 17 , wherein the coating layer comprises at least two layers, and the coating layer of an outermost layer comprises polyamide and/or a thermoplastic elastomer as a main component.
23. The plastic optical fiber cord according to claim 17 , wherein pistoning after heat treatment at 105° C. for 24 hours is ±0.5 mm or less.
24. The plastic optical fiber cord according to claim 17 , wherein adhesion force between the plastic optical fiber and the coating layer is 30 N or more at 30 mm length.