Cable with advantageous electrical properties
US-2019348191-A1 · Nov 14, 2019 · US
Insulated wire and cable using halogen-free flame-retardant resin composition
US11270814B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11270814-B2 |
| Application number | US-201715824437-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 28, 2017 |
| Priority date | Dec 2, 2016 |
| Publication date | Mar 8, 2022 |
| Grant date | Mar 8, 2022 |
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- Title
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Abstract
Official abstract text for this publication.
An insulated wire includes a conductor, and an insulation layer covering an outer periphery of the conductor. The insulation layer includes a halogen-free flame-retardant resin composition including a base polymer, not less than 1 part by mass and not more than 10 parts by mass of an amorphous silica and not less than 10 parts by mass and not more than 150 parts by mass of a halogen-free flame retardant relative to 100 parts by mass of the base polymer. The base polymer includes not less than 50 parts by mass and not more than 90 parts by mass of either an ethylene-vinyl acetate copolymer or an ethylene-butene copolymer and not less than 10 parts by mass and not more than 50 parts by mass of a low-density polyethylene.
First claim
Opening claim text (preview).
What is claimed is: 1. An insulated wire, comprising: a conductor; and an insulation layer covering an outer periphery of the conductor, wherein the insulation layer comprises a halogen-free flame-retardant resin composition comprising a base polymer, not less than 1 part by mass and not more than 10 parts by mass of an amorphous silica with a specific surface area of not less than 100 m 2 /g and not more than 150 m 2 /g, as measured by BET method and not less than 10 parts by mass and not more than 80 parts by mass of a metal hydroxide as a flame retardant component relative to 100 parts by mass of the base polymer, and wherein the base polymer consists of not less than 50 parts by mass and not more than 90 parts by mass of an ethylene-butene copolymer and not less than 10 parts by mass and not more than 50 parts by mass of a low-density polyethylene, wherein the flame retardant component consists of the metal hydroxide, and a melting temperature of the low-density polyethylene is not less than 95° C. and not more than 101° C. 2. The insulated wire according to claim 1 , wherein the halogen-free flame-retardant resin composition further comprises not less than 1 part by mass and not more than 40 parts by mass of carbon black relative to 100 parts by mass of the base polymer. 3. The insulated wire according to claim 1 , wherein a content of the amorphous silica is not less than 1 part by mass and not more than 8 parts by mass of the amorphous silica. 4. The insulated wire according to claim 1 , wherein a content of the amorphous silica is not less than 3 parts by mass and not more than 7 parts by mass of the amorphous silica. 5. A cable, comprising: an insulated wire comprising a conductor and an insulation layer covering an outer periphery of the conductor; and a sheath formed around the insulated wire, wherein the sheath comprises a sheath halogen-free flame-retardant resin composition comprising a sheath base polymer, not less than 1 part by mass and not more than 10 parts by mass of an amorphous silica with a specific surface area of not less than 100 m 2 /g and not more than 150 m 2 /g, as measured by BET method and not less than 10 parts by mass and not more than 80 parts by mass of a metal hydroxide as a flame retardant component relative to 100 parts by mass of the sheath base polymer, and wherein the sheath base polymer consists of not less than 50 parts by mass and not more than 90 parts by mass of an ethylene-butene copolymer and not less than 10 parts by mass and not more than 50 parts by mass of a low-density polyethylene with a melting temperature of not less than 95° C. and not more than 101° C., wherein the flame retardant component consists of the metal hydroxide. 6. The cable according to claim 5 , wherein the insulation layer comprises an insulation layer halogen-free flame-retardant resin composition comprises an insulation layer base polymer, not less than 1 part by mass and not more than 10 parts by mass of an amorphous silica with a specific surface area of not less than 100 m 2 /g and not more than 150 m 2 /g, as measured by BET method and not less than 10 parts by mass and not more than 80 parts by mass of a halogen-free flame retardant relative to 100 parts by mass of the insulation layer base polymer, and wherein the insulation layer base polymer comprises not less than 50 parts by mass and not more than 90 parts by mass of an ethylene-butene copolymer and not less than 10 parts by mass and not more than 50 parts by mass of a low-density polyethylene. 7. The cable according to claim 5 , wherein the sheath halogen-free flame-retardant resin composition further comprises not less than 1 part by mass and not more than 40 parts by mass of carbon black relative to 100 parts by mass of the sheath base polymer. 8. The cable according to claim 6 , wherein the insulation layer halogen-free flame-retardant resin composition further comprises not less than 1 part by mass and not more than 40 parts by mass of carbon black relative to 100 parts by mass of the insulation layer base polymer. 9. The cable according to claim 5 , wherein a content of the amorphous silica is not less than 1 part by mass and not more than 8 parts by mass of the amorphous silica. 10. The cable according to claim 5 , wherein a content of the amorphous silica is not less than 3 parts by mass and not more than 7 parts by mass of the amorphous silica.
Assignees
Inventors
Classifications
- H01B7/295Primary
using material resistant to flame · CPC title
from vinylacetals · CPC title
LDPE (radical process) · CPC title
Silica · CPC title
Halogen free composition · CPC title
Patent family
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11270814B2 cover?
- An insulated wire includes a conductor, and an insulation layer covering an outer periphery of the conductor. The insulation layer includes a halogen-free flame-retardant resin composition including a base polymer, not less than 1 part by mass and not more than 10 parts by mass of an amorphous silica and not less than 10 parts by mass and not more than 150 parts by mass of a halogen-free flame …
- Who is the assignee on this patent?
- Hitachi Metals Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01B7/295. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 08 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).