阅读说明：本技术 一种耐高温的镍铬合金氟塑电线及其制备方法 (High-temperature-resistant nickel-chromium alloy fluoroplastic wire and preparation method thereof ) 是由 张雪峰 李桂新 于 2020-06-16 设计创作，主要内容包括：本发明公开了一种耐高温的镍铬合金氟塑电线,其包括支撑体及嵌设于所述支撑体上的多条线体,所述支撑体呈方形结构、且于四角位置处开设有卡槽,所述卡槽沿所述支撑体的长度方向延伸,所述线体与所述卡槽形状相适配、且所述线体卡持安装于所述卡槽内；多条所述线体的外侧经绳体缠绕加固；所述支撑体的外侧还包覆有第一绝缘层,所述第一绝缘层的外壁包覆有屏蔽层,所述屏蔽层的外壁包覆有第一阻燃层。本发明还公开了其制备方法。该电线具备较好的热稳定性、耐火性,且整体结构生产及制备方法操作也较为方便。(The invention discloses a high-temperature-resistant nickel-chromium alloy fluoroplastic electric wire which comprises a supporting body and a plurality of wire bodies embedded on the supporting body, wherein the supporting body is of a square structure, clamping grooves are formed in the positions of four corners of the supporting body, the clamping grooves extend along the length direction of the supporting body, the wire bodies are matched with the clamping grooves in shape, and the wire bodies are clamped and installed in the clamping grooves; the outer sides of the plurality of line bodies are wound and reinforced by the rope bodies; the outside of supporter still cladding has first insulating layer, the outer wall cladding of first insulating layer has the shielding layer, the outer wall cladding of shielding layer has first fire-retardant layer. The invention also discloses a preparation method of the composition. The electric wire has good thermal stability and fire resistance, and the whole structure production and preparation method are convenient to operate.)

1. The utility model provides a high temperature resistance nichrome fluoroplastic electric wire which characterized in that:

the supporting body (100) is of a square structure, clamping grooves (110) are formed in four corners of the supporting body (100), the clamping grooves (110) extend along the length direction of the supporting body (100), the wire body (200) is matched with the clamping grooves (110) in shape, and the wire body (200) is clamped and installed in the clamping grooves (110); the outer sides of the plurality of wire bodies (200) are wound and reinforced by the rope body (300); the outer side of the supporting body (100) is further coated with a first insulating layer (400), the outer wall of the first insulating layer (400) is coated with a shielding layer (500), and the outer wall of the shielding layer (500) is coated with a first flame-retardant layer (600).

2. The high temperature resistant nichrome fluoroplastic wire of claim 1, wherein:

the width of the notch position of the clamping groove (110) is smaller than the diameter of the wire body (200), the wire body (200) is clamped in the clamping groove (110) and partially protrudes out of the clamping groove (110), the rope body (300) is wound on the outer sides of the four wire bodies (200), the first insulating layer (400) wraps the outer sides of the wire bodies (200), and the rope body (300) is embedded in the first insulating layer (400).

3. The high temperature resistant nichrome fluoroplastic wire of claim 2, wherein:

the rope body (300) is a flat tensile cotton rope.

4. The high temperature resistant nichrome fluoroplastic wire of claim 3, wherein:

the center of the support body (100) is provided with a first through hole (120), the first through hole (120) extends along the length direction of the support body (100), the bottom of each clamping groove (110) is provided with a plurality of second through holes (130), the second through holes (130) are distributed in a linear array along the length direction of the clamping grooves (110), and the second through holes (130) are communicated with the first through holes (120).

5. The high temperature resistant nichrome fluoroplastic wire of claim 4, wherein:

the support body (100) is made of silica gel and has a honeycomb structure.

6. The high temperature resistant nichrome fluoroplastic wire of claim 5, wherein:

the outer wall of the first flame-retardant layer (600) is provided with cutting grooves (610) corresponding to the wire bodies (200), and the cutting grooves (610) extend along the length direction of the wire bodies (200).

7. The high temperature resistant nichrome fluoroplastic wire of claim 6, wherein:

the shielding layer (500) is of a metal woven net structure.

8. The high temperature resistant nichrome fluoroplastic wire of claim 7, wherein:

the cable body (200) comprises a wire core (210) wound by a nickel-chromium alloy, a second insulating layer (220) coated on the outer side of the wire core (210), and a second flame-retardant layer (230) coated on the outer side of the second insulating layer (220).

9. The high temperature resistant nichrome fluoroplastic wire of claim 8, wherein:

the first flame retardant layer (600) and the second flame retardant layer (230) are both made of a halogen-free flame retardant polyolefin material.

10. A method for preparing the high temperature resistant nichrome fluoroplastic wire of any one of claims 1 to 9 comprising the steps of:

s1, injecting glass cement into the first through hole through the second through hole in one of the clamping grooves, and injecting the glass cement at intervals of 20 cm;

s2, pressing and clamping the four line bodies in the clamping grooves of the supporting body;

s3, winding and reinforcing the wire body in a spiral winding mode on the outer side of the wire body;

s4, performing glue injection coating on the wire wound with the wire body to form a first insulating layer;

s5, covering a shielding layer outside the first insulating layer;

and S6, performing glue injection coating on the electric wire coated with the shielding layer to form a first flame-retardant layer, and finishing the finished product of the whole electric wire.

Technical Field

The invention relates to the field of electric wires, in particular to a high-temperature-resistant nickel-chromium alloy fluoroplastic electric wire and a preparation method thereof.

Background

At present, the electric wires and cables for fixing and wiring in various domestic constructional engineering are products with a large range, and not only relate to thousands of households, but also in occasions with high fire-proof safety conditions such as industrial factory buildings, businesses, office buildings, entertainment, petroleum, mines, ships and the like, the electric wires and cables for fixing and wiring in the constructional engineering are mainly polyvinyl chloride insulated cables represented by IEC (international electrotechnical commission) in the world at present, however, as the PVC insulated cables continue to work, plasticizers in PVC plastics volatilize, the insulation is aged and brittle, the working safety is greatly reduced, and fire accidents are caused to happen sometimes.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a high-temperature-resistant nickel-chromium alloy fluoroplastic electric wire and a preparation method thereof.

In order to achieve the purpose, the invention provides the following technical scheme:

a high-temperature-resistant nickel-chromium alloy fluoroplastic electric wire comprises a supporting body and a plurality of wire bodies embedded on the supporting body, wherein the supporting body is of a square structure, clamping grooves are formed in four corners of the supporting body, the clamping grooves extend along the length direction of the supporting body, the wire bodies are matched with the clamping grooves in shape, and the wire bodies are clamped and installed in the clamping grooves; the outer sides of the plurality of line bodies are wound and reinforced by the rope bodies; the outside of supporter still cladding has first insulating layer, the outer wall cladding of first insulating layer has the shielding layer, the outer wall cladding of shielding layer has first fire-retardant layer.

In a preferred technical scheme of the present invention, a width of a notch position of the slot is smaller than a diameter of the wire body, the wire body is clamped in the slot and partially protrudes out of the slot, the wire body is wound around outer sides of the four wire bodies, the first insulating layer is coated on the outer side of the wire body, and the wire body is embedded in the first insulating layer.

In a preferred technical scheme of the invention, the rope body is a flat tensile cotton rope.

In a preferred technical scheme of the present invention, a first through hole is disposed at a center of the support body, the first through hole extends along a length direction of the support body, a plurality of second through holes are disposed at a bottom of each of the slots, the plurality of second through holes are distributed in a linear array along the length direction of the slot, and the second through holes are communicated with the first through holes.

In a preferred technical scheme of the invention, the support body is made of silica gel and has a honeycomb structure.

In a preferred technical scheme of the invention, the outer wall of the first flame-retardant layer is provided with cutting grooves corresponding to the wire bodies, and the cutting grooves extend along the length direction of the wire bodies.

In a preferred technical scheme of the present invention, the shielding layer is a metal mesh structure.

In a preferred technical scheme of the invention, the wire body comprises a wire core wound by nichrome and a second insulating layer coated on the outer side of the wire core, wherein a second flame-retardant layer is coated on the outer side of the second insulating layer.

In a preferred technical scheme of the invention, the first flame-retardant layer and the second flame-retardant layer are both made of halogen-free flame-retardant polyolefin materials.

A preparation method of a high-temperature-resistant nickel-chromium alloy fluoroplastic wire comprises the following steps:

s1, injecting glass cement into the first through hole through the second through hole in one of the clamping grooves, and injecting the glass cement at intervals of 20 cm;

s2, pressing and clamping the four line bodies in the clamping grooves of the supporting body;

s3, winding and reinforcing the wire body in a spiral winding mode on the outer side of the wire body;

s4, performing glue injection coating on the wire wound with the wire body to form a first insulating layer;

s5, covering a shielding layer outside the first insulating layer;

and S6, performing glue injection coating on the electric wire coated with the shielding layer to form a first flame-retardant layer, and finishing the finished product of the whole electric wire.

The invention has the beneficial effects that:

the high-temperature-resistant nickel-chromium alloy fluoroplastic electric wire and the preparation method thereof provided by the invention have the advantages that a plurality of clamping grooves are formed in a support body in the electric wire, the clamping grooves can be used for clamping and fixing an installation wire body to provide primary fixation, the plurality of wire bodies can be further wound and reinforced through the arrangement of the wire body, then a first insulating layer is coated on the first insulating layer, a shielding layer is coated on the outer side of the first insulating layer, and a first flame-retardant layer is coated on the outer side of the shielding layer, so that the electric wire has certain thermal stability, fire resistance, shielding function and insulating property, and the multi-environment applicability of; and the production of the integral structure of the electric wire and the operation of the preparation method are more convenient, thereby being convenient for actual production.

Drawings

FIG. 1 is a schematic view of a first cross-sectional structure of a high temperature resistant NiCr alloy fluoroplastic wire provided in an embodiment of the present invention;

FIG. 2 is a second cross-sectional view of a high temperature resistant NiCr alloy fluoroplastic wire as provided in an embodiment of the present invention;

FIG. 3 is a schematic structural view of a support body provided in an embodiment of the present invention;

fig. 4 is a schematic structural view of a wire body provided in an embodiment of the present invention.

In the figure:

100. a support body; 110. a card slot; 120. a first through hole; 130. a second through hole; 200. a wire body; 210. a wire core; 220. a second insulating layer; 230. a second flame retardant layer; 300. a rope body; 400. a first insulating layer; 500. a shielding layer; 600. a first flame retardant layer; 610. and cutting the groove.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 and fig. 2, a high temperature resistant nichrome fluoroplastic electric wire according to an embodiment of the present invention includes a support body 100 and a plurality of wire bodies 200 embedded on the support body 100, where the support body 100 is a square structure, and four corners of the support body are provided with slots 110, the slots 110 extend along a length direction of the support body 100, the wire bodies 200 are matched with the slots 110 in shape, and the wire bodies 200 are mounted in the slots 110 in a clamping manner; the outer sides of the plurality of wire bodies 200 are wound and reinforced by the rope body 300; the outer side of the supporting body 100 is further coated with a first insulating layer 400, the outer wall of the first insulating layer 400 is coated with a shielding layer 500, and the outer wall of the shielding layer 500 is coated with a first flame retardant layer 600.

According to the high-temperature-resistant nichrome fluoroplastic electric wire, the support body 100 in the electric wire is provided with the plurality of clamping grooves 110, the clamping grooves 110 can be used for clamping and fixing the installation wire body 200 to provide primary fixing, the plurality of wire bodies 200 can be further wound and reinforced through the arrangement of the rope body 300, then the first insulation layer 400 is coated, the shielding layer 500 is coated on the outer side of the first insulation layer 400, and the first flame-retardant layer 600 is coated on the outer side of the shielding layer 500, so that the electric wire has certain thermal stability, fire resistance, shielding function and insulating property, and the multi-environment applicability of the electric wire is improved; and the production of the integral structure of the electric wire and the operation of the preparation method are more convenient, thereby being convenient for actual production. Further, the width of the notch of the clamping groove 110 is smaller than the diameter of the wire body 200, the wire body 200 is clamped in the clamping groove 110 and partially protrudes out of the clamping groove 110, the rope body 300 is wound around the outer sides of the four wire bodies 200, the first insulating layer 400 is coated on the outer side of the wire body 200, and the rope body 300 is embedded in the first insulating layer 400; the arrangement of the rope body 300 can be used for further reinforcing the clamping between the line body 200 and the support body 100, and the reinforcing mode can also play a certain traction effect, especially in the peeling process, the rope body 300 can be pulled to break the skin.

Further, the rope body 300 is a flat tensile cotton rope, which can increase the contact area between the rope body 300 and the line body, and does not occupy too much space.

Further, a first through hole 120 is formed in the center of the supporting body 100, the first through hole 120 extends along the length direction of the supporting body 100, a plurality of second through holes 130 are formed in the bottom of each clamping groove 110, the plurality of second through holes 130 are distributed in a linear array along the length direction of the clamping groove 110, and the second through holes 130 are communicated with the first through holes 120; the support body 100 is made of silica gel and has a honeycomb structure; with this structure, the support body 100 can provide a certain support strength, and can maintain sufficient flexibility, thereby facilitating the bending of the cable and effectively preventing the cable from breaking.

Further, a cutting groove 610 is formed in the outer wall of the first flame retardant layer 600 corresponding to each wire body 200, and the cutting groove 610 extends along the length direction of the wire body 200; the cutting groove 610 is arranged to conveniently guide the position of the wire body 200, and the position of the wire body 200 can be quickly found according to the cutting groove 610 in the subsequent situation that peeling or wire connection is required, so that operation is facilitated.

Further, the shielding layer 500 is a metal woven mesh structure; the metal mesh grid is used as a shielding layer, so that the shielding effect is achieved, and meanwhile, a certain fireproof and heat-resistant effect can be achieved.

Further, the wire body 200 comprises a wire core 210 wound by nichrome, a second insulating layer 220 covering the outside of the wire core 210, and a second flame retardant layer 230 covering the outside of the second insulating layer 220; the second insulating layer 220 and the second flame-retardant layer 230 disposed on the wire body 200 can further protect the wire core 210, and have secondary flame-retardant, heat-resistant and insulating effects, and the first insulating layer 400 and the second insulating layer 220 are made of fluoroplastics, which have good thermal stability and fire resistance; the first flame-retardant layer 600 and the second flame-retardant layer 230 are both made of halogen-free flame-retardant polyolefin material, which is a common flame-retardant layer material for cable production and has mature processing technology.

A preparation method of a high-temperature-resistant nickel-chromium alloy fluoroplastic wire comprises the following steps:

s1, injecting glass cement into the first through hole through the second through hole in one of the clamping grooves, and injecting the glass cement at intervals of 20 cm;

s2, pressing and clamping the four line bodies in the clamping grooves of the supporting body;

s3, winding and reinforcing the wire body in a spiral winding mode on the outer side of the wire body;

s4, performing glue injection coating on the wire wound with the wire body to form a first insulating layer;

s5, covering a shielding layer outside the first insulating layer;

s6, performing glue injection coating on the electric wire coated with the shielding layer to form a first flame-retardant layer, wherein the glue injection mold is provided with a bulge for forming a cutting groove, and the first flame-retardant layer completes the cutting groove in the forming process to complete the whole electric wire finished product.

In the preparation method, the glass cement is injected at intervals, and when the wire body is installed or the rope body is wound, the glass cement at the first through hole can seep out from the second through hole at the periphery, so that the bonding between the wire body and the clamping groove is reinforced.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.