FIBER ASSEMBLY, COMPOSITE OF ELECTRO CONDUCTIVE SUBSTRATE AND FIBER ASSEMBLY, AND PRODUCTION METHODS THEREOF
First Claim
1. A fiber assembly obtained by electrifying a resin in a melted state by application of voltage between a supply-side electrode and a collection-side electrode so as to extend the resin into an ultrafine composite fiber by electrospinning, and accumulating the ultrafine composite fiber,wherein the ultrafine composite fiber comprises at least two polymeric components and the ultrafine composite fiber comprises at least one type of composite fiber selected from a sea-island structure composite fiber and a core-sheath structure composite fiber as viewed in fiber cross section,at least one selected from an island component and a core component has a volume specific resistance of 1015Ω
- ·
cm or less, andat least one selected from a sea component and a sheath component has a volume specific resistance exceeding 1015Ω
·
cm.
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0 Petitions
Accused Products
Abstract
The present invention relates to a fiber assembly obtained by electrifying a resin in a melted state by application of voltage between a supply-side electrode and a collection-side electrode so as to extend the resin into an ultrafine composite fiber by electrospinning, and accumulating the ultrafine composite fiber, wherein the ultrafine composite fiber includes at least two polymeric components and the ultrafine composite fiber includes at least one type of composite fiber selected from a sea-island structure composite fiber and a core-sheath structure composite fiber as viewed in fiber cross section, at least one selected from an island component and a core component has a volume specific resistance of 1015Ω·cm or less, and at least one selected from a sea component and a sheath component has a volume specific resistance exceeding 1015Ω·cm. Thereby, the present invention provides a fiber assembly obtained by accumulating an ultrafine composite fiber obtained by electrospinning without the use of any solvent or water as a spinning solution, a composite of an electro conductive substrate and such a fiber assembly, and production methods thereof.
45 Citations
17 Claims
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1. A fiber assembly obtained by electrifying a resin in a melted state by application of voltage between a supply-side electrode and a collection-side electrode so as to extend the resin into an ultrafine composite fiber by electrospinning, and accumulating the ultrafine composite fiber,
wherein the ultrafine composite fiber comprises at least two polymeric components and the ultrafine composite fiber comprises at least one type of composite fiber selected from a sea-island structure composite fiber and a core-sheath structure composite fiber as viewed in fiber cross section, at least one selected from an island component and a core component has a volume specific resistance of 1015Ω - ·
cm or less, andat least one selected from a sea component and a sheath component has a volume specific resistance exceeding 1015Ω
·
cm. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A composite of an electro conductive substrate and a fiber assembly comprising an electro conductive substrate and a fiber assembly obtained by electrifying a resin in a melted state by application of voltage between a supply-side electrode and a collection-side electrode so as to extend the resin into an ultrafine composite fiber by electrospinning, and accumulating the ultrafine composite fiber,
the ultrafine composite fiber comprising at least two polymeric components and the ultrafine composite fiber comprising at least one type of composite fiber selected from a sea-island structure composite fiber and a core-sheath structure composite fiber as viewed in fiber cross section, at least one selected from an island component and a core component having a volume specific resistance of 1015Ω - ·
cm or less, andat least one selected from a sea component and a sheath component having a volume specific resistance exceeding 1015Ω
·
cm,wherein at least a part or all of a surface of the electro conductive substrate is covered and integrated with the fiber assembly. - View Dependent Claims (8, 9, 13, 14, 15, 16, 17)
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10. A method for producing a fiber assembly obtained by heating and melting a composite-resin-formed product in a solid or melted state in at least one selected from a region in advance of a supply-side electrode and a region between the supply-side electrode and a collection-side electrode, extending the composite-resin-formed product into an ultrafine composite fiber by electrospinning, and accumulating the ultrafine composite fiber,
wherein the ultrafine composite fiber comprises at least two polymeric components and the ultrafine composite fiber comprises at least one type of composite fiber selected from a sea-island structure composite fiber and a core-sheath structure composite fiber as viewed in fiber cross section, at least one selected from an island component and a core component has a volume specific resistance of 1015Ω - ·
cm or less, andat least one selected from a sea component and a sheath component has a volume specific resistance exceeding 1015Ω
·
cm. - View Dependent Claims (11)
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12. A method for producing a composite of an electro conductive substrate and a fiber assembly in which at least a part or all of a surface of the electro conductive substrate is covered and integrated with the fiber assembly,
wherein when the electro conductive substrate is disposed on a collection-side electrode, and a composite-resin-formed product in a solid or melted state is heated and melted in at least one selected from a region in advance of a supply-side electrode and a region between the supply-side electrode and the collection-side electrode and extended into an ultrafine composite fiber by electrospinning, and the ultrafine composite fiber is accumulated on the surface of the electro conductive substrate so as to form a fiber assembly in which the electro conductive substrate is covered and integrated with the fiber assembly, the ultrafine composite fiber comprises at least two polymeric components and the ultrafine composite fiber comprises at least one type of composite fiber selected from a sea-island structure composite fiber and a core-sheath structure composite fiber as viewed in fiber cross section, at least one selected from an island component and a core component has a volume specific resistance of 1015Ω - ·
cm or less, andat least one selected from a sea component and a sheath component has a volume specific resistance exceeding 1015Ω
·
cm.
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Specification