CN214753075U

CN214753075U - Flame-retardant resin composition insulated wire

Info

Publication number: CN214753075U
Application number: CN202120991614.6U
Authority: CN
Inventors: 王斌; 洪勇军; 席维高; 孙卫平; 丰卫平
Original assignee: Hangzhou Qiandaohu Yongtong Cables Co ltd
Current assignee: Hangzhou Qiandaohu Yongtong Cables Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-11-16
Anticipated expiration: 2031-05-10

Abstract

The utility model discloses a flame retardant resin composition insulated wire, including wire and the insulating layer of cladding outside the wire, it has interior filler layer to pack between wire and the insulating layer, and the outside cladding of interior filler layer has the shielding layer, and the outside cladding of shielding layer has the resin isolation layer, and the outside cladding of resin isolation layer has fire-resistant inoxidizing coating, and it has outer filler layer to pack between fire-resistant inoxidizing coating and the resin isolation layer, and the outside cladding of fire-resistant inoxidizing coating has the taping, and the outside protection of taping has the sheath, the utility model discloses, utilize bandage body cladding to overlap notch upper portion and connect through the viscose layer when fire-resistant inoxidizing coating is outside, constitute complete protective layer, the bandage body is mica combined material, and fire resistance is good, improves the fire resistance of electric wire.

Description

Flame-retardant resin composition insulated wire

Technical Field

The utility model relates to a wire and cable correlation technique field specifically is a fire retardant resin composition insulated wire.

Background

The insulated wire has a conductor and an insulating layer as a covering material provided around the conductor. The cable includes, for example, a stranded wire obtained by twisting the insulated wires and a sheath provided around the stranded wire. The insulating layer of the insulated wire and the sheath provided in the cable are made of an electrically insulating material mainly composed of rubber or resin. Such insulated wires and cables differ in the characteristics required according to the application. For example, an insulated wire for electronic equipment or railway vehicles requires high flame retardancy, and ordinary insulated electrical properties cannot satisfy such requirements as high flame retardancy and high fire resistance, and at the same time, such electronic equipment and railway vehicle use environments also have certain requirements for electromagnetic shielding performance of the wire. Therefore, the utility model provides a flame retardant resin composition insulated wire for solving the problems.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a flame retardant resin composition insulated wire, which solves the problems of the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire retardant resin composition insulated wire, includes the wire and the cladding at the outside insulating layer of wire, it has interior filler layer to fill between wire and the insulating layer, the outside cladding of interior filler layer has the shielding layer, the outside cladding of shielding layer has the resin isolation layer, the outside cladding of resin isolation layer has fire-resistant inoxidizing coating, it has outer filler layer to fill between fire-resistant inoxidizing coating and the resin isolation layer, the outside cladding of fire-resistant inoxidizing coating has the tape winding, there is the sheath around the outside protection in tape.

Preferably, the fire-resistant protective layer comprises a fire-resistant outer layer and four convex ribs, the four convex ribs are arranged on the inner side along the length direction of the fire-resistant outer layer, and the outer packing layer is filled at the position between the four convex ribs.

Preferably, the lead comprises a conductor, an insulating outer layer and a flame retardant resin layer, wherein the insulating outer layer is coated on the outer surface of the conductor, and the flame retardant resin layer is protected on the outer surface of the insulating outer layer.

Preferably, the shielding layer comprises an aluminum sheet, positioning convex parts and positioning holes, the positioning convex parts are arranged on one side of the aluminum sheet at equal intervals, and the positioning holes are formed in the other side of the aluminum sheet corresponding to the positioning convex parts.

Preferably, the strap includes a strap body, a lower notch and an upper notch, the upper notch being provided at an upper portion of one side edge of the strap body, and the lower notch being provided at a lower portion of the one side edge of the strap body.

Preferably, the bandage also includes metal buried line and viscose layer, the metal buried line is pre-buried inside the bandage body, the viscose layer is pasted at last notch bottom.

Preferably, the inner filler layer and the outer filler layer are strong alumina, and the binding band is a mica composite strip.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the inner filler layer and the outer filler layer are combusted in the electric wire, the aluminum hydroxide is decomposed at the temperature of 200-300 ℃, and dehydration reaction is carried out after the decomposition, so that a large amount of heat on the surface of the high polymer material is absorbed, and the surface temperature of the combustion material can be reduced; simultaneously dehydrating to generate a large amount of water vapor to dilute the concentration of combustible gas and oxygen; the decomposed residue and the alumina are compact oxides which are deposited on the surface of the high polymer material to limit the generation of combustible gas and play roles in heat insulation and oxygen isolation;

2. when the aluminum sheet is used for covering the outside of the insulating layer, the positioning convex part is embedded into the positioning hole, the two sides of the aluminum sheet are tightly connected to form a complete metal cylindrical shielding body, the shielding layer reduces the outward diffusion of electromagnetic signals generated by current flowing in the wire, reduces the influence on the external environment, reduces the interference on the external signals and ensures the normal work of the wire;

3. utilize bandage body cladding time lower notch overlap to last notch upper portion and connect through the viscose layer when the refractory protection layer is outside, constitute complete protective layer, the bandage body is mica combined material, and fire resistance is good, improves the fire resistance of electric wire.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention;

fig. 2 is a schematic diagram of the cross-sectional structure of the lead of the present invention;

fig. 3 is a schematic structural view of the shielding layer of the present invention;

fig. 4 is a schematic view of the cross-sectional structure of the winding belt of the present invention.

In the figure: 1. a wire; 2. an inner filler layer; 3. an insulating layer; 4. a shielding layer; 5. a resin isolation layer; 6. an outer packing layer; 7. a fire-resistant protective layer; 8. binding bands; 9. a sheath; 11. a conductor; 12. an insulating outer layer; 13. a flame-retardant resin layer; 41. aluminum flakes; 42. a positioning projection; 43. positioning holes; 81. a strap body; 82. burying a wire in metal; 83. a lower notch; 84. an upper recess; 85. and (5) gluing the layers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a flame-retardant resin composition insulated wire comprises a wire 1 and an insulating layer 3 coated outside the wire 1, wherein the insulating layer 3 ensures the working stability of the wire 1, an inner filler layer 2 is filled between the wire 1 and the insulating layer 3, a shielding layer 4 is coated outside the inner filler layer 2, the shielding layer 4 reduces the outward diffusion of electromagnetic signals generated by the current flow in the wire, reduces the influence on the external environment, reduces the interference on external signals and ensures the normal work of the wire 1; the shielding layer 4 is coated with the resin isolation layer 5, the resin isolation layer 5 protects the shielding layer 4, the high-temperature resistance and fire resistance of the shielding layer 4 are improved, and the working time of the electric wire in a high-temperature environment in which a fire occurs is prolonged; the resin isolation layer 5 is coated with a fire-resistant protection layer 7, and the fire-resistant protection layer 7 is made of common fire-resistant materials in the market and protects the stability of the internal structure of the resin isolation layer; the outer packing layer 6 is filled between the fire-resistant protective layer 7 and the resin isolation layer 5, the outer packing layer 6 improves the fire-resistant flame retardant property of electric wire, the outside cladding of fire-resistant protective layer 7 has the winding tape 8, the winding tape 8 improves the fire resistance of electrical property, the outside protection of winding tape 8 has sheath 9, and sheath 9 protects its inside structure.

Further, the fire-resistant protective layer 7 comprises a fire-resistant outer layer 71 and four convex ribs 72, the four convex ribs 72 are arranged on the inner side along the length direction of the fire-resistant outer layer 71, the outer packing layer 6 is filled at the positions among the four convex ribs 72, the four convex ribs 72 ensure that a certain space is ensured between the fire-resistant outer layer 71 and the resin isolation layer 5, so that the outer seasoning layer 6 can be smoothly filled, and the outer seasoning layer 6 improves the fire-resistant flame-retardant performance of the electric wire.

Further, the lead 1 comprises a conductor 11, an insulating outer layer 12 and a flame retardant resin layer 13, wherein the insulating outer layer 12 covers the outer surface of the conductor 11, the flame retardant resin layer 13 protects the outer surface of the insulating outer layer 12, the flame retardant resin layer 13 is a halogen-free resin composition layer, normal operation of the conductor 11 is guaranteed, and the insulating outer layer 12 guarantees insulating performance.

Further, the shielding layer 4 includes an aluminum sheet 41, positioning protrusions 42 and positioning holes 43, the positioning protrusions 42 are equidistantly arranged on one side of the aluminum sheet 41, the positioning holes 43 are formed on the other side of the aluminum sheet 41 corresponding to the positioning protrusions 42, the positioning protrusions 42 are embedded into the positioning holes 43 when the aluminum sheet 41 covers the insulating layer 3, and two sides of the aluminum sheet 41 are tightly connected to form a complete metal cylindrical shielding body.

Further, the strap 8 includes a strap body 81, a lower notch 84, and an upper notch 85, the upper notch 85 being provided at an upper portion of one side edge of the strap body 81, the lower notch 84 being provided at a lower portion of one side edge of the strap body 81; when the binding band body 81 is coated outside the fire-resistant protective layer 7, the lower notch 84 is lapped on the upper part of the upper notch 85 and is connected through the adhesive layer 83 to form a complete protective layer, and the fire resistance of the electric wire is improved.

Further, the binding band 8 further comprises a metal embedded line 82 and an adhesive layer 83, the metal embedded line 82 is embedded in the binding band body 81, and the adhesive layer 83 is adhered to the bottom of the upper notch 85; the metal buried wire 82 improves the tensile strength of the band body 81, thereby improving the performance of the electric wire.

Furthermore, the inner filler layer 2 and the outer filler layer 6 are strong alumina, the binding band 8 is a mica composite strip, the inner filler layer 2 and the outer filler layer 6 are burnt on the electric wire, the aluminum hydroxide is decomposed at 300 ℃ at 200-; simultaneously dehydrating to generate a large amount of water vapor to dilute the concentration of combustible gas and oxygen; the decomposed residue and alumina are compact oxides which are deposited on the surface of the high polymer material to limit the generation of combustible gas, play the roles of heat insulation and oxygen isolation and achieve the effect of smoke suppression.

The working principle is as follows: when a fire disaster happens, the binding belt body 81 is coated outside the fire-resistant protective layer 7, the lower notch 84 is lapped on the upper part of the upper notch 85 and is connected through the adhesive layer 83 to form a complete protective layer, so that the fire resistance of the electric wire is ensured, the inner filler layer 2 and the outer filler layer 6 are combusted in the electric wire, the aluminum hydroxide is decomposed at the temperature of 200-300 ℃, and a dehydration reaction is carried out after the decomposition, so that a large amount of heat on the surface of a high polymer material is absorbed, and the surface temperature of the combustion material can be reduced; simultaneously dehydrating to generate a large amount of water vapor to dilute the concentration of combustible gas and oxygen; the decomposed residue and the alumina are compact oxides which are deposited on the surface of the high polymer material to limit the generation of combustible gas, play the roles of heat insulation and oxygen isolation and achieve the effect of smoke suppression; when the aluminum sheet 41 is coated outside the insulating layer 3, the positioning protrusion 42 is embedded inside the positioning hole 43, two sides of the aluminum sheet 41 are tightly connected to form a complete metal cylindrical shielding body, the shielding layer 4 reduces electromagnetic signals generated by current flowing in the lead from diffusing outwards, reduces the influence on the external environment and the interference on the external signals, and the flame-retardant resin layer 13 outside the conductor 11 is a halogen-free resin composition layer to ensure the normal work of the conductor 11.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An insulated wire of a flame-retardant resin composition comprising a conductor (1) and an insulating layer (3) covering the outside of the conductor (1), characterized in that: it has interior filler layer (2) to pack between wire (1) and insulating layer (3), the outside cladding of interior filler layer (2) has shielding layer (4), the outside cladding of shielding layer (4) has resin isolation layer (5), the outside cladding of resin isolation layer (5) has fire-resistant inoxidizing coating (7), it has outer filler layer (6) to pack between fire-resistant inoxidizing coating (7) and resin isolation layer (5), the outside cladding of fire-resistant inoxidizing coating (7) has bandage (8), the external protection of bandage (8) has sheath (9).

2. The flame-retardant resin composition insulated wire according to claim 1, wherein: the fireproof protective layer (7) comprises a fireproof outer layer (71) and four convex ribs (72), the four convex ribs (72) are arranged on the inner side along the length direction of the fireproof outer layer (71), and the outer filler layer (6) is filled between the four convex ribs (72).

3. The flame-retardant resin composition insulated wire according to claim 1, wherein: the lead (1) comprises a conductor (11), an insulating outer layer (12) and a flame-retardant resin layer (13), wherein the insulating outer layer (12) is coated on the outer surface of the conductor (11), and the flame-retardant resin layer (13) is protected on the outer surface of the insulating outer layer (12).

4. The flame-retardant resin composition insulated wire according to claim 1, wherein: shielding layer (4) include aluminium sheet (41), location bulge (42) and locating hole (43), location bulge (42) equidistance interval is laid in one side of aluminium sheet (41), locating hole (43) are seted up to the opposite side of aluminium sheet (41) corresponding to the position of location bulge (42).

5. The flame-retardant resin composition insulated wire according to claim 1, wherein: the strap (8) comprises a strap body (81), a lower notch (84) and an upper notch (85), wherein the upper notch (85) is arranged at the upper part of one side edge of the strap body (81), and the lower notch (84) is arranged at the lower part of one side edge of the strap body (81).

6. The flame-retardant resin composition insulated wire according to claim 5, wherein: the bandage (8) further comprises a metal embedded line (82) and an adhesive layer (83), the metal embedded line (82) is embedded inside the bandage body (81), and the adhesive layer (83) is adhered to the bottom of the upper notch (85).

7. The flame-retardant resin composition insulated wire according to claim 1, wherein: the inner filler layer (2) and the outer filler layer (6) are made of strong aluminum oxide, and the binding band (8) is a mica composite strip.