CN115910486A - Processing technology of flame-retardant and fire-resistant cable - Google Patents
Processing technology of flame-retardant and fire-resistant cable Download PDFInfo
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- CN115910486A CN115910486A CN202211481336.5A CN202211481336A CN115910486A CN 115910486 A CN115910486 A CN 115910486A CN 202211481336 A CN202211481336 A CN 202211481336A CN 115910486 A CN115910486 A CN 115910486A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention discloses a processing technology of a flame-retardant and fire-resistant cable, which is characterized in that metal is drawn and annealed to form a required metal conductor; interweaving a plurality of manufactured metal conductors together in a specified direction in a stranding mode; melting, extruding and pressing the high-temperature insulating raw materials, and wrapping the high-temperature insulating raw materials around the periphery of the interwoven metal conductor to form an inner core of the cable; coating a layer of fire-resistant layer on the outer side of the cable inner core; the protective layer raw materials are uniformly mixed, melted, extruded and formed, soaked in the flame retardant liquid, dried and wrapped outside the flame retardant layer. The invention avoids the spontaneous combustion phenomenon in the use process of the cable and ensures the use safety of the cable.
Description
Technical Field
The invention relates to the technical field of cable processing technologies, in particular to a flame-retardant and fire-resistant cable processing technology.
Background
Cable is a generic term for optical cables, electrical cables, and the like. The use of cables is many, for example, for control of installations, connecting equipment, transmitting power, etc. With the development of the information age, the power consumption and the information transmission demand of people are more and more. The transmission and application of electric energy and signals are not separated from cables.
With the development of polymer material industry, polymer synthetic materials are more and more widely applied in the production and processing of cables. However, the high polymer material has inflammability, and in the using process of the processed and produced cable, if a fire disaster happens, short circuit or open circuit easily occurs, even spontaneous combustion occurs, toxic gas is generated, harm is brought to the health of human bodies, and the rescue work of firemen is seriously influenced.
Therefore, it is desirable to provide a flame retardant and fire resistant cable processing technique to solve the above problems.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a processing technology of a flame-retardant and fire-resistant cable, which avoids the spontaneous combustion phenomenon in the use process of the cable and ensures the use safety of the cable.
In order to achieve the purpose, the invention adopts the technical scheme that: a processing technology of a flame-retardant and fire-resistant cable comprises the following steps:
the method comprises the following steps: drawing and annealing the metal to prepare a required metal conductor;
step two: interweaving a plurality of manufactured metal conductors together in a specified direction in a stranding mode;
step three: melting, extruding and pressing the high-temperature insulating raw materials, and wrapping the high-temperature insulating raw materials around the periphery of the interwoven metal conductor to form an inner core of the cable;
step four: coating a layer of fire-resistant layer on the outer side of the cable inner core;
step five: the protective layer raw materials are uniformly mixed, melted, extruded and formed, soaked in the flame retardant liquid, dried and wrapped outside the flame retardant layer.
Furthermore, the forming material wrapped on the periphery of the interwoven metal conductors is an insulating layer made of ceramic silicon rubber, so that the signal stability between the conductors in the use process of the cable is ensured.
Furthermore, a filling layer is arranged between the insulating layer and the fire-resistant layer, and the filler in the filling layer is a glass fiber rope.
Furthermore, the annealing temperature in the first step is between five hundred and ninety degrees and six hundred degrees, and the annealing temperature is moderate, so that the quality of the metal conductor can be ensured, and the usability of the subsequently manufactured cable inner core cannot be influenced.
Furthermore, the material of flame retardant coating is epoxy, sets up this flame retardant coating and can guarantee to protect the inner core in the cable when taking place the conflagration, makes the circuit not have obvious damage.
Furthermore, the raw material of the protective layer is polyesterimide which has excellent mechanical property, electrical insulation property, irradiation resistance, high and low temperature resistance and wear resistance, the overall safety performance of the protective layer can be effectively improved, and the cable is prevented from spontaneous combustion under the condition of short circuit or open circuit.
Further, the flame retardant liquid is a mixed solution of water, phosphoric acid, dicyandiamide, disodium octaborate, silica sol, basic magnesium carbonate and diethanolamine, and the flame retardant liquid comprises the following components in parts by weight: 35 parts of phosphoric acid, 35 parts of dicyandiamide, 20 parts of disodium octaborate, 20 parts of silica sol, 3 parts of basic magnesium carbonate and 3 parts of diethanolamine; the mass percentage concentration of the phosphoric acid is 70 percent; the silica sol of (3) had a silica concentration of 30% by mass.
The invention has the beneficial effects that:
according to the invention, the insulating layer, the filling layer, the fireproof layer and the protective layer are sequentially wound on the cable inner core, so that the insulation property of the cable can be effectively ensured, the spontaneous combustion phenomenon in the use process of the cable is avoided, and the use safety of the cable is ensured.
Drawings
FIG. 1 is a schematic diagram of the process steps of one embodiment of the present invention;
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the present invention more comprehensible to those skilled in the art, and will thus provide a clear and concise definition of the scope of the present invention.
Referring to fig. 1, the processing technology of the flame-retardant and fire-resistant cable in the embodiment includes the following steps:
the method comprises the following steps: drawing and annealing the metal to prepare a required metal conductor;
step two: interweaving a plurality of manufactured metal conductors together according to a specified direction in a twisting mode;
step three: melting, extruding and pressing the high-temperature insulating raw materials, and wrapping the high-temperature insulating raw materials around the periphery of the interwoven metal conductor to form an inner core of the cable;
step four: coating a layer of fire-resistant layer on the outer side of the cable inner core;
step five: the raw materials of the protective layer are uniformly mixed, are subjected to melting extrusion forming, are wrapped outside the flame retardant layer after being soaked and dried by the flame retardant liquid, and are subjected to extrusion forming through an extruder.
Wherein the protective layer soaked by the flame retardant liquid is dried by blowing pure nitrogen gas under high pressure.
The forming material wrapped on the periphery of the interwoven metal conductors is an insulating layer made of ceramic silicon rubber, so that the signal stability between the conductors in the use process of the cable is ensured.
And a filling layer is arranged between the insulating layer and the fire-resistant layer, and the filler in the filling layer is a glass fiber rope.
The annealing temperature in the first step is between five hundred and ninety degrees and six hundred degrees, and the annealing temperature is moderate, so that the quality of the metal conductor can be ensured, and the usability of the subsequently manufactured cable inner core cannot be influenced.
The material of flame retardant coating is epoxy, sets up this flame retardant coating and can guarantee to protect the inner core in the cable when taking place the conflagration, makes the circuit not have obvious damage.
The protective layer is made of polyesterimide, the polyesterimide has excellent mechanical property, electrical insulation property, irradiation resistance, high and low temperature resistance and wear resistance, the overall safety performance of the protective layer can be effectively improved, and the cable is prevented from spontaneous combustion under the condition of short circuit or open circuit.
The flame retardant liquid is a mixed solution of water, phosphoric acid, dicyandiamide, disodium octaborate, silica sol, basic magnesium carbonate and diethanol amine, and the flame retardant liquid comprises the following components in parts by weight: 35 parts of phosphoric acid, 35 parts of dicyandiamide, 20 parts of disodium octaborate, 20 parts of silica sol, 3 parts of basic magnesium carbonate and 3 parts of diethanolamine; the mass percentage concentration of the phosphoric acid is 70 percent; the silica sol of (3) had a silica concentration of 30% by mass.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. The processing technology of the flame-retardant and fire-resistant cable is characterized by comprising the following steps of:
the method comprises the following steps: drawing and annealing the metal to prepare a required metal conductor;
step two: interweaving a plurality of manufactured metal conductors together in a specified direction in a stranding mode;
step three: melting, extruding and pressing the high-temperature insulating raw materials, and wrapping the high-temperature insulating raw materials around the periphery of the interwoven metal conductor to form a cable inner core;
step four: coating a layer of fire-resistant layer on the outer side of the cable inner core;
step five: the protective layer raw materials are uniformly mixed, melted, extruded and formed, soaked in the flame retardant liquid, dried and wrapped outside the flame retardant layer.
2. The processing technology of the flame-retardant and fire-resistant cable according to claim 1, characterized in that: the forming material wrapped on the periphery of the interwoven metal conductor is an insulating layer, and the insulating layer is made of ceramic silicon rubber.
3. The processing technology of the flame-retardant and fire-resistant cable according to claim 1, characterized in that: and a filling layer is arranged between the insulating layer and the fire-resistant layer, and the filler in the filling layer is a glass fiber rope.
4. The processing technology of the flame-retardant and fire-resistant cable according to claim 1, characterized in that: the annealing temperature in the first step is between five hundred and ninety degrees and six hundred degrees.
5. The processing technology of the flame-retardant and fire-resistant cable according to claim 1, characterized in that: the fire-resistant layer is made of epoxy resin.
6. The processing technology of the flame-retardant and fire-resistant cable according to claim 1, characterized in that: the raw material of the protective layer is polyester imide.
7. The processing technology of the flame-retardant and fire-resistant cable according to claim 1, characterized in that: the flame retardant liquid is a mixed solution of water, phosphoric acid, dicyandiamide, disodium octaborate, silica sol, basic magnesium carbonate and diethanol amine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211481336.5A CN115910486A (en) | 2022-11-24 | 2022-11-24 | Processing technology of flame-retardant and fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211481336.5A CN115910486A (en) | 2022-11-24 | 2022-11-24 | Processing technology of flame-retardant and fire-resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115910486A true CN115910486A (en) | 2023-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211481336.5A Pending CN115910486A (en) | 2022-11-24 | 2022-11-24 | Processing technology of flame-retardant and fire-resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115910486A (en) |
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2022
- 2022-11-24 CN CN202211481336.5A patent/CN115910486A/en active Pending
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