CN212209010U

CN212209010U - High-temperature-resistant flame-retardant computer cable

Info

Publication number: CN212209010U
Application number: CN201922176021.XU
Authority: CN
Inventors: 董吟梅; 陆秀国; 王友香; 杨茂明
Original assignee: Tianchang Huiling Electric Appliance Meter Factory
Current assignee: Tianchang Huiling Electric Appliance Meter Factory
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-12-22
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses a fire-retardant computer cable of high temperature resistant, lead the core including several, form the cable core after the core transposition is led to several, the cable core intussuseption is filled with fire prevention clay, the cable core of telling outward in proper order the cladding have insulating layer, shielding layer, fire-retardant layer, silicon rubber restrictive coating. The fireproof daub is composed of epoxy resin and aluminum hydroxide in equal proportion. The utility model discloses a be provided with fire prevention daub, fire-retardant layer, silicon rubber jacket layer three-level high temperature resistant flame retardant structure, have excellent high temperature resistant fire-retardant, performance such as safe in utilization, in addition, this simple structure, low in production cost, wide application in fields such as computer, oil, chemical industry, fire control, hotel, amusement place.

Description

High-temperature-resistant flame-retardant computer cable

Technical Field

The utility model relates to a computer cable technical field especially relates to a fire-retardant computer cable of high temperature resistant.

Background

The computer cable belongs to a cable for electrical equipment, and is suitable for electronic computers and automatic instruments with the rated voltage of 500V or below and higher requirement on interference resistance. According to different environments and use requirements of equipment, the cable insulation can be made of polyethylene, polyvinyl chloride, cross-linked polyethylene, fluoroplastic, silicon rubber and other materials.

Computer cables exist in all corners in our life, the existing computer cables are not enough in the aspects of high temperature resistance and flame retardance, when the computer cables work in a high-temperature environment for a long time, an outer sheath layer and an insulating layer of the cables can be melted and fall off or even burn, the cables are easy to burn out, and therefore the computer cables cannot work, equipment operation is affected, even fire disasters can be caused, and personal safety of workers is threatened.

The Chinese patent with publication number CN109285628A discloses a high-temperature-resistant flame-retardant computer cable and a preparation method thereof, wherein a plurality of guide cores are arranged, and an insulating layer, a shielding layer and a flame-retardant layer are sequentially wrapped to form a wire core; the cable core and the reinforcing core are twisted to form a fence core, and an inner wrapping tape layer, a fireproof layer, an outer wrapping tape layer, an outer sheath layer and the like are wrapped outside the cable core again. Although the technical scheme also enhances the high-temperature-resistant flame-retardant property of the cable to a certain extent, the technical scheme uses more types of raw materials, the process is complex, the production cost is high, and therefore, the high-temperature-resistant flame-retardant computer cable with higher practicability is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high temperature resistant fire-retardant computer cable to solve the current computer cable manufacturing cost height that proposes in the above-mentioned background art, high temperature resistant and fire-retardant poor performance, the low technical problem of security.

In order to achieve the above object, the utility model provides a following technical scheme: a high-temperature-resistant flame-retardant computer cable comprises a plurality of guide cores, wherein the plurality of guide cores are twisted to form a cable core, fireproof mortar is filled in the cable core, and an insulating layer, a shielding layer, a flame-retardant layer and a silicon rubber sheath layer are sequentially coated on the periphery of the cable core; the fireproof daub is formed by rolling aluminum hydroxide, epoxy resin and calcium carbonate, and the mass ratio of the aluminum hydroxide to the epoxy resin to the calcium carbonate is 1:1: 1.

The calcium carbonate is an inorganic compound, is white solid, is tasteless and odorless, has good affinity with resin, can effectively increase or adjust the rigidity and toughness of the material, can improve the rheological property of the fireproof daub, and is used as a filler of the fireproof daub; the phosphate has stronger bonding capability and is used as a bonding agent of the fireproof daub; the aluminum hydroxide is heated or decomposed at high temperature to generate water, and the water is evaporated to absorb heat to have the functions of cooling and flame retarding.

The silicon rubber is characterized by high-temperature stability, and although the strength of the silicon rubber at normal temperature is only half of that of natural rubber or some synthetic rubber, the silicon rubber can still keep certain flexibility, rebound resilience and surface hardness under the high-temperature environment of more than 200 ℃, and the mechanical properties are not obviously changed. The glass transition temperature of the low-temperature performance silicon rubber is generally-70 to-50 ℃, and the special formula can reach-100 ℃, which shows that the low-temperature performance is excellent.

Preferably, the insulating layer is made of polyvinyl chloride, and the thickness of the insulating layer is 2-3 mm.

Preferably, the shielding layer is composed of an aluminum-plastic composite tape.

Preferably, the flame-retardant layer is made of ceramic fiber cotton, and the thickness of the flame-retardant layer is 2-3 mm.

Preferably, the cross section of the guide core is circular.

Compared with the prior art, the utility model has the advantages that the utility model discloses a pack in the cable core and roll by aluminium hydroxide, epoxy and calcium carbonate and constitute fire prevention daub, by the fire-retardant layer and the silicon rubber restrictive coating that ceramic fiber cotton constitutes multi-level, protect the computer cable more, when outermost cable reached the high temperature peak value, the cable people can be in safe operating condition, have excellent high temperature resistant fire-retardant characteristic; and the utility model has the advantages of simple structure, low production cost, easy acquisition of adopted materials and convenient wide popularization.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure: 1. a guide core; 2. fireproof daub; 3. a cable core; 4. an insulating layer; 5. a shielding layer; 6. a flame retardant layer; 7. a silicone rubber sheath layer.

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.

[ example 1 ]

Referring to fig. 1, the present invention provides a technical solution: a high-temperature-resistant flame-retardant computer cable comprises a plurality of guide cores 1, wherein the plurality of guide cores 1 are twisted to form a cable core 3, fireproof mortar 2 is filled in the cable core 3, and an insulating layer 4, a shielding layer 5, a flame-retardant layer 6 and a silicon rubber sheath layer 7 are sequentially coated on the periphery of the cable core 3; the fireproof daub 3 is composed of aluminum hydroxide, epoxy resin and calcium carbonate, and the mass ratio of the aluminum hydroxide to the epoxy resin to the calcium carbonate is 1:1: 1; the insulating layer 4 is made of polyvinyl chloride, and the thickness of the insulating layer 4 is 2 mm; the shielding layer 5 is composed of an aluminum-plastic composite belt; the flame-retardant layer 6 is made of ceramic fiber cotton, and the thickness of the flame-retardant layer 6 is 2 mm; the cross section of the guide core 1 is circular.

When the external temperature is higher, the silicone rubber sheath layer 7 is firstly contacted at high temperature, and because the silicone rubber has the remarkable characteristic of high-temperature stability, although the strength of the silicone rubber at normal temperature is only half of that of natural rubber or some synthetic rubber, the silicone rubber can still keep certain flexibility, resilience and surface hardness under the high-temperature environment of more than 200 ℃, and the mechanical property is not obviously changed; when the cable is used for a long time and the silicon rubber sheath layer 7 is damaged due to dragging and the like, the ceramic fiber cotton in the flame-retardant layer 6 is contacted with high temperature, and the material is extremely difficult to burn; the fire-retardant daub 2 composed of aluminum hydroxide, epoxy resin and calcium carbonate arranged in the innermost layer utilizes the fire-retardant property of aluminum hydroxide, wherein the calcium carbonate and the epoxy resin are used as adhesives of the fire-retardant daub 2.

[ example 2 ]

Referring to fig. 1, the present invention provides a technical solution: a high-temperature-resistant flame-retardant computer cable comprises a plurality of guide cores 1, wherein the plurality of guide cores 1 are twisted to form a cable core 3, fireproof mortar 2 is filled in the cable core 3, and an insulating layer 4, a shielding layer 5, a flame-retardant layer 6 and a silicon rubber sheath layer 7 are sequentially coated on the periphery of the cable core 3; the fireproof daub 2 is composed of aluminum hydroxide, epoxy resin and calcium carbonate, and the mass ratio of the aluminum hydroxide to the epoxy resin to the calcium carbonate is 1:1: 1. The insulating layer 4 is made of polyvinyl chloride, and the thickness of the insulating layer 4 is 3 mm; the shielding layer 5 is composed of an aluminum-plastic composite belt; the flame-retardant layer 6 is made of ceramic fiber cotton, and the thickness of the flame-retardant layer 6 is 3 mm; the cross section of the guide core 1 is circular.

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. A high-temperature-resistant flame-retardant computer cable comprises a plurality of guide cores (1), wherein the plurality of guide cores (1) are twisted to form a cable core (3), and is characterized in that fireproof mortar (2) is filled in the cable core (3), and an insulating layer (4), a shielding layer (5), a flame-retardant layer (6) and a silicone rubber sheath layer (7) are sequentially coated on the periphery of the cable core (3).

2. The high temperature resistant flame retardant computer cable of claim 1, wherein: the insulating layer (4) be made by polyvinyl chloride, and the thickness of insulating layer (4) is 2 ~ 3 mm.

3. The high temperature resistant flame retardant computer cable of claim 2, wherein: the shielding layer (5) is composed of an aluminum-plastic composite belt.

4. The high temperature resistant flame retardant computer cable of claim 3, wherein: the flame-retardant layer (6) is made of ceramic fiber cotton, and the thickness of the flame-retardant layer (6) is 2-3 mm.

5. The high temperature resistant flame retardant computer cable of claim 4, wherein: the cross section of the guide core (1) is circular.