CN112562923A - Improved high-flame-retardant fire-resistant twisted pair manufacturing process - Google Patents
Improved high-flame-retardant fire-resistant twisted pair manufacturing process Download PDFInfo
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- CN112562923A CN112562923A CN202011447374.XA CN202011447374A CN112562923A CN 112562923 A CN112562923 A CN 112562923A CN 202011447374 A CN202011447374 A CN 202011447374A CN 112562923 A CN112562923 A CN 112562923A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
Abstract
The invention discloses a manufacturing process of an improved high-flame-retardant fire-resistant twisted pair, which comprises the following steps of putting a halogen-free material into a cleaning pool, putting clean water into the cleaning pool, and mixing the materials according to a clean water and alcohol ratio of 5: 2, adding alcohol, soaking for 2 hours, fishing out the halogen-free material raw materials by using a filter sieve to clean the tank, directly putting the halogen-free material into a water spraying tank, spraying water on the surface of the halogen-free material, and putting the dried halogen-free material into a cleaning stirring tank. According to the improved high-flame-retardant fire-resistant twisted pair manufacturing process, the purity of the halogen-free material can be well guaranteed in the step S1, so that the compactness of the halogen-free material wrapped on the wire core can be guaranteed, the compactness of the outermost layer of the halogen-free material can also be guaranteed, and the purposes of good high flame retardance and strong fire resistance can be achieved; in the melting process, impurity removal treatment is further performed, so that the purity of the halogen-free material is further improved, and the purposes of good high flame retardance and strong fire resistance are further achieved.
Description
Technical Field
The invention relates to the technical field of high-flame-retardant fire-resistant twisted pairs, in particular to a manufacturing process of an improved high-flame-retardant fire-resistant twisted pair.
Background
Twisted pair is one of the most common transmission media in integrated wiring engineering and consists of two copper wires with an insulating protective layer. Two insulated copper wires are twisted together according to a certain density, the electric wave radiated by each wire in transmission can be counteracted by the electric wave sent by the other wire, so that the degree of signal interference is effectively reduced, and the twisted pair is formed by twisting a pair of mutually insulated metal wires. By adopting the mode, not only can part of electromagnetic wave interference from the outside be resisted, but also the mutual interference among the twisted pairs can be reduced. By twisting two insulated conductors together, the interference signal acting on the two twisted conductors being identical (this interference signal is called the common-mode signal), the common-mode signal being cancelled in the differential circuit of the received signal, so as to extract the useful signal (differential-mode signal)
The existing problem that the lapping cover is reduced under the bending condition because the soft conductor has poor support performance, and the lapping tape of the soft conductor under the bending condition is staggered, so that the carbonized layer of the polyester film is attached to the lapping cover and is not compact when a fire resistance test is carried out, point discharge is easy to generate, the fire resistance test is not over, and therefore an improved high-flame-retardant fire-resistant twisted pair manufacturing process is needed
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an improved high-flame-retardant fire-resistant twisted pair manufacturing process, which has the advantages of high flame retardance, strong fire resistance, compactness, difficulty in generating point discharge, easiness in passing a fire resistance test and the like, and solves the problems of low high-flame-retardant and fire resistance, incompactness, easiness in generating point discharge and easiness in passing the fire resistance test.
(II) technical scheme
In order to achieve the purposes of high flame retardance, strong fire resistance, compactness, difficult point discharge generation and easy passing of fire resistance tests, the invention provides the following technical scheme: an improved high flame-retardant fire-resistant twisted pair manufacturing process comprises the following steps:
s1, selecting materials
Selecting halogen-free material raw materials, putting the halogen-free materials into a cleaning pool, putting clear water into the cleaning pool, and mixing the materials according to the proportion of the clear water to the alcohol of 5: 2, adding alcohol, soaking for 2-5 hours, fishing out the halogen-free material raw material by using a filter screen after soaking, directly putting the halogen-free material into a water spraying tank, spraying water on the surface of the halogen-free material, putting the dried halogen-free material into a cleaning stirring tank, sequentially adding clear water and alcohol according to the ratio of the clear water to the alcohol of 5:3, then putting the halogen-free material into the cleaning stirring tank for stirring and cleaning, and stirring and cleaning for 2-4 hours at the rotating speed of a stirring shaft of the cleaning stirring tank at 200-300 r/min to obtain the impurity-free halogen-free material raw material.
S2, melting
Putting the obtained halogen-free material raw material into a heating furnace, heating the temperature in the heating furnace to 200-300 ℃, heating the put halogen-free material raw material into a molten state, adding a precipitator into the molten material, precipitating the heated substances which cannot be molten, screening the halogen-free material in the molten state through a high-temperature screen, separating the precipitated impurities from the halogen-free material of the molten material, and putting the separated halogen-free material into the heating furnace.
S3 twisted pair
Wrapping a halogen-free material in a molten state on the outer surface of a power line to obtain halogen-free wire cores, selecting at least two halogen-free wire cores to perform a twisted pair, fastening two ends of the twisted pair through metal strips after the twisted pair, stretching and spreading the twisted pair after fastening, fixing two ends of the twisted pair, suspending the twisted pair after fixing, placing the twisted pair in a standing room, standing for 5-6 hours, and obtaining the twisted pair wire cores which are wound and fastened.
S4, wrapping
And putting the selected hemp rope filling layer into the latex to be soaked for 3-4 hours, wrapping the filling layer and the twisted pair wire core, and wrapping the rubber insulating layer outside the filling layer.
S5, line forming
The insulating layer is wrapped by the aluminum foil paper, the armor layer is wrapped outside the aluminum foil layer, the copper wire mesh layer is wrapped on the surface of the armor layer, and finally the halogen-free material is wrapped outside the copper wire mesh layer, so that the high-flame-retardant fire-resistant twisted pair is finally prepared.
Preferably, the shower bath cleaned in step S1 is cleaned, and cleaning with alcohol is required.
Preferably, the halogen-free material in the heating furnace during melting in step S2 is not more than two thirds of the halogen-free material in the heating furnace, and the heating furnace is electrically heated.
Preferably, in step S3, when wrapping the molten halogen-free material on the wire core, an extruder is used for wrapping.
Preferably, when the twisted pair wire core is wound in step S3, the twisted pair wire core is directly wound by a twisting machine.
Preferably, in the step S3, the drawing needs to be performed by using a drawing machine, and the pulling force of the drawing machine is 5-9 newtons.
Preferably, the twine is directly wound around the twisted pair wire core in step S4, and further wound using a stranding machine after the winding.
Preferably, in step S5, the armor layer is made of a metal steel sheet, and the metal sheet and the copper wire mesh are welded.
(III) advantageous effects
Compared with the prior art, the invention provides an improved high-flame-retardant fire-resistant twisted pair manufacturing process, which has the following beneficial effects:
1. according to the improved high-flame-retardance fire-resistant twisted pair manufacturing process, through the step S1, the purity of the halogen-free material can be well guaranteed, so that the compactness of the halogen-free material wrapped on the wire core can be guaranteed, the compactness of the outermost layer of the halogen-free material can also be guaranteed, and the purposes of good high flame retardance and strong fire resistance can be achieved.
2. According to the improved high-flame-retardance fire-resistant twisted pair manufacturing process, the purity of the halogen-free material can be further improved by further impurity removal treatment in the melting process through S2, so that the purposes of good high flame retardance and strong fire resistance are further achieved, the halogen-free material cannot be loosened due to stretching after wrapping, the problem of dislocation is effectively eliminated, point discharge is not easy to generate, and fire resistance tests are easy to pass.
3. This improved generation high fire-retardant fire-resistant twisted pair manufacturing process, through step S4, when carrying out the packing of filling layer, directly carry out the location processing through the latex with the filling layer, can be under the flexible characteristics of not changing twisted pair self, further reached closely knit effect strong purpose, simultaneously effectual dislocation problem of having solved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
an improved high flame-retardant fire-resistant twisted pair manufacturing process comprises the following steps:
s1, selecting materials
Selecting halogen-free material raw materials, putting the halogen-free materials into a cleaning pool, putting clear water into the cleaning pool, and mixing the materials according to the proportion of the clear water to the alcohol of 5: 2, adding alcohol, soaking for 2 hours, fishing out the halogen-free material raw material by using a filter screen to form a cleaning pool, directly putting the halogen-free material into a water spraying pool, spraying water on the surface of the halogen-free material, putting the dried halogen-free material into a cleaning stirring tank, sequentially adding clear water and alcohol according to the ratio of the clear water to the alcohol of 5:3, then putting the halogen-free material into the cleaning stirring tank for stirring and cleaning, stirring and cleaning for 2 hours at the stirring shaft rotating speed of 300r/min to obtain the impurity-free halogen-free material raw material, and cleaning the cleaning pool by using the alcohol.
S2, melting
Putting the obtained halogen-free material raw material into a heating furnace, heating the temperature in the heating furnace to 200 ℃, heating the put halogen-free material raw material into a molten state, adding a precipitator into the molten material, precipitating the heated substances which can not be molten, screening the halogen-free material in the molten state through a high-temperature screen, separating the precipitated impurities from the halogen-free material of the molten material, putting the separated halogen-free material into the heating furnace, wherein the halogen-free material in the heating furnace during melting can not be higher than two thirds of the halogen-free material in the heating furnace, and heating the heating furnace in an electric heating mode.
S3 twisted pair
Wrapping the halogen-free material in a molten state on the outer surface of a power line to obtain halogen-free wire cores, selecting at least two halogen-free wire cores to carry out twisted pair, fastening two ends of the twisted pair by metal strips after the twisted pair, stretching and spreading the twisted pair after fastening, fixing two ends of the twisted pair, suspending the twisted pair after fixing, placing the twisted pair in a standing room to stand for 5 hours to obtain the twisted pair wire cores which are wound and fastened, wrapping the halogen-free material in the molten state on the wire cores by using an extruder, directly winding the twisted pair wire cores by using a wire twisting machine when winding the twisted pair wire cores, stretching the twisted pair wire cores by using a tractor, and simultaneously stretching the tractor by 5 newtons.
S4, wrapping
The selected hemp rope filling layer is placed into the latex to be soaked for 3 hours, the filling layer and the twisted pair wire cores are wrapped, then the rubber insulating layer is wrapped outside the filling layer, the hemp rope is directly wound with the twisted pair wire cores, and the twisting machine is used for further winding after winding.
S5, line forming
The insulating layer is wrapped by the aluminum foil paper, meanwhile, the armor layer is wrapped outside the aluminum foil layer, then the copper wire mesh layer is wrapped on the surface of the armor layer, finally, the halogen-free material is wrapped outside the copper wire mesh layer, the high-flame-retardant fire-resistant twisted pair is finally prepared, the armor layer is made of the metal steel sheet, and the metal sheet and the copper wire mesh are welded.
Example two:
an improved high flame-retardant fire-resistant twisted pair manufacturing process comprises the following steps:
s1, selecting materials
Selecting halogen-free material raw materials, putting the halogen-free materials into a cleaning pool, putting clear water into the cleaning pool, and mixing the materials according to the proportion of the clear water to the alcohol of 5: 2, adding alcohol, soaking for 4 hours, fishing out the halogen-free material raw material by using a filter screen after soaking, directly putting the halogen-free material into a water spraying tank, spraying water on the surface of the halogen-free material, putting the dried halogen-free material into a cleaning stirring tank, sequentially adding clear water and alcohol according to the ratio of the clear water to the alcohol of 5:3, then putting the halogen-free material into the cleaning stirring tank for stirring and cleaning, stirring and cleaning for 3 hours at the rotating speed of a stirring shaft of the cleaning stirring tank at 250r/min to obtain the impurity-free halogen-free material raw material, and cleaning the cleaning tank by using the alcohol in the cleaned water spraying tank.
S2, melting
Putting the obtained halogen-free material raw material into a heating furnace, heating the temperature in the heating furnace to 250 ℃, heating the put halogen-free material raw material into a molten state, adding a precipitator into the molten material, precipitating the heated substances which can not be molten, screening the halogen-free material in the molten state through a high-temperature screen, separating the precipitated impurities from the halogen-free material of the molten material, putting the separated halogen-free material into the heating furnace, wherein the halogen-free material in the heating furnace during melting can not be higher than two thirds of the halogen-free material in the heating furnace, and heating the heating furnace in an electric heating mode.
S3 twisted pair
Wrapping the halogen-free material in a molten state on the outer surface of a power line to obtain halogen-free wire cores, selecting at least two halogen-free wire cores to carry out twisted pair, fastening two ends of the twisted pair by metal strips after the twisted pair, stretching and spreading the twisted pair after fastening, fixing two ends of the twisted pair, suspending the twisted pair after fixing, placing the twisted pair in a standing room to stand for 5.5 hours to obtain twisted and fastened twisted pair wire cores, wrapping the halogen-free material in the molten state on the wire cores by using an extruder, directly winding the twisted pair wire cores by using a stranding machine when winding the twisted pair wire cores, stretching by using a tractor, and simultaneously stretching by using the tractor with the tension of 8 newtons.
S4, wrapping
The selected hemp rope filling layer is placed into the latex to be soaked for 3.5 hours, the filling layer and the twisted pair wire core are wrapped, then the rubber insulating layer is wrapped outside the filling layer, the hemp rope is directly wound with the twisted pair wire core, and the twisting machine is used for further winding after winding.
S5, line forming
The insulating layer is wrapped by the aluminum foil paper, meanwhile, the armor layer is wrapped outside the aluminum foil layer, then the copper wire mesh layer is wrapped on the surface of the armor layer, finally, the halogen-free material is wrapped outside the copper wire mesh layer, the high-flame-retardant fire-resistant twisted pair is finally prepared, the armor layer is made of the metal steel sheet, and the metal sheet and the copper wire mesh are welded.
Example three:
an improved high flame-retardant fire-resistant twisted pair manufacturing process comprises the following steps:
s1, selecting materials
Selecting halogen-free material raw materials, putting the halogen-free materials into a cleaning pool, putting clear water into the cleaning pool, and mixing the materials according to the proportion of the clear water to the alcohol of 5: 2, adding alcohol, soaking for 5 hours, fishing out the halogen-free material raw material by using a filter screen to obtain a cleaning pool, directly putting the halogen-free material into a water spraying pool, spraying water on the surface of the halogen-free material, putting the dried halogen-free material into a cleaning stirring tank, sequentially adding clear water and alcohol according to the ratio of the clear water to the alcohol of 5:3, then putting the halogen-free material into the cleaning stirring tank for stirring and cleaning, stirring and cleaning for 4 hours at the stirring shaft rotating speed of 300r/min to obtain the impurity-free halogen-free material raw material, and cleaning the cleaning pool by using the alcohol.
S2, melting
Putting the obtained halogen-free material raw material into a heating furnace, heating the temperature in the heating furnace to 300 ℃, heating the halogen-free material raw material into a molten state, adding a precipitator into the molten material, precipitating the heated substances which cannot be molten, screening the halogen-free material in the molten state through a high-temperature screen, separating the precipitated impurities from the halogen-free material of the molten material, putting the separated halogen-free material into the heating furnace, wherein the halogen-free material raw material in the heating furnace during melting cannot be higher than two thirds of the halogen-free material in the heating furnace, and heating the heating furnace by an electric heating mode.
S3 twisted pair
Wrapping the halogen-free material in a molten state on the outer surface of a power line to obtain halogen-free wire cores, selecting at least two halogen-free wire cores to carry out twisted pair, fastening two ends of the twisted pair by metal strips after the twisted pair, stretching and spreading the twisted pair after fastening, fixing two ends of the twisted pair, suspending the twisted pair after fixing, placing the twisted pair in a standing room to stand for 6 hours to obtain the twisted pair wire cores which are wound and fastened, wrapping the halogen-free material in the molten state on the wire cores by using an extruder, directly winding the twisted pair wire cores by using a wire twisting machine when winding the twisted pair wire cores, stretching the twisted pair wire cores by using a tractor, and simultaneously stretching the tractor by 9 newtons.
S4, wrapping
The selected hemp rope filling layer is placed into the latex to be soaked for 4 hours, the filling layer and the twisted pair wire cores are wrapped, then the rubber insulating layer is wrapped outside the filling layer, the hemp rope is directly wound with the twisted pair wire cores, and the twisting machine is used for further winding after winding.
S5, line forming
The insulating layer is wrapped by the aluminum foil paper, meanwhile, the armor layer is wrapped outside the aluminum foil layer, then the copper wire mesh layer is wrapped on the surface of the armor layer, finally, the halogen-free material is wrapped outside the copper wire mesh layer, the high-flame-retardant fire-resistant twisted pair is finally prepared, the armor layer is made of the metal steel sheet, and the metal sheet and the copper wire mesh are welded.
According to the improved high-flame-retardance fire-resistant twisted pair manufacturing process, through the step S1, the purity of the halogen-free material can be well guaranteed, so that the compactness of the halogen-free material wrapped on the wire core can be guaranteed, the compactness of the outermost layer of the halogen-free material can also be guaranteed, and the purposes of good high flame retardance and strong fire resistance can be achieved; by further impurity removal treatment in the melting process of S2, the purity of the halogen-free material can be further improved, so that the purposes of good high flame retardance and strong fire resistance are further achieved, the halogen-free material cannot collapse due to stretching after being wrapped, and the problem of dislocation is effectively eliminated; through step S4, when the filling layer is filled, the filling layer is directly positioned through latex, the purpose of strong compaction effect can be further achieved without changing the characteristic of flexibility of the twisted pair, meanwhile, the problem of dislocation is effectively solved, and point discharge and fire resistance test are not easy to generate and easily pass.
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 (8)
1. An improved high flame-retardant fire-resistant twisted pair manufacturing process is characterized by comprising the following steps:
s1, selecting materials
Selecting halogen-free material raw materials, putting the halogen-free materials into a cleaning pool, putting clear water into the cleaning pool, and mixing the materials according to the proportion of the clear water to the alcohol of 5: 2, adding alcohol, soaking for 2-5 hours, fishing out the halogen-free material raw material by using a filter screen after soaking, directly putting the halogen-free material into a water spraying tank, spraying water on the surface of the halogen-free material, putting the dried halogen-free material into a cleaning stirring tank, sequentially adding clear water and alcohol according to the ratio of the clear water to the alcohol of 5:3, then putting the halogen-free material into the cleaning stirring tank for stirring and cleaning, and stirring and cleaning for 2-4 hours at the rotating speed of a stirring shaft of the cleaning stirring tank at 200-300 r/min to obtain the impurity-free halogen-free material raw material.
S2, melting
Putting the obtained halogen-free material raw material into a heating furnace, heating the temperature in the heating furnace to 200-300 ℃, heating the put halogen-free material raw material into a molten state, adding a precipitator into the molten material, precipitating the heated substances which cannot be molten, screening the halogen-free material in the molten state through a high-temperature screen, separating the precipitated impurities from the halogen-free material of the molten material, and putting the separated halogen-free material into the heating furnace.
S3 twisted pair
Wrapping a halogen-free material in a molten state on the outer surface of a power line to obtain halogen-free wire cores, selecting at least two halogen-free wire cores to perform a twisted pair, fastening two ends of the twisted pair through metal strips after the twisted pair, stretching and spreading the twisted pair after fastening, fixing two ends of the twisted pair, suspending the twisted pair after fixing, placing the twisted pair in a standing room, standing for 5-6 hours, and obtaining the twisted pair wire cores which are wound and fastened.
S4, wrapping
And putting the selected hemp rope filling layer into the latex to be soaked for 3-4 hours, wrapping the filling layer and the twisted pair wire core, and wrapping the rubber insulating layer outside the filling layer.
S5, line forming
The insulating layer is wrapped by the aluminum foil paper, the armor layer is wrapped outside the aluminum foil layer, the copper wire mesh layer is wrapped on the surface of the armor layer, and finally the halogen-free material is wrapped outside the copper wire mesh layer, so that the high-flame-retardant fire-resistant twisted pair is finally prepared.
2. The improved high flame-retardant fire-resistant twisted pair manufacturing process according to claim 1, wherein the rinsing tank cleaned in step S1 is cleaned by alcohol.
3. The improved high flame retardant fire-resistant twisted pair manufacturing process according to claim 1, wherein the halogen-free material in the heating furnace during melting in step S2 is not more than two thirds of the material in the heating furnace, and the heating furnace is heated by electric heating.
4. The improved manufacturing process of claim 1, wherein in step S3, when wrapping the molten halogen-free material around the wire core, an extruder is used to wrap the wire core.
5. The process of claim 1, wherein the twisted pair is directly wound by a twisting machine when the twisted pair is wound in step S3.
6. The improved high flame retardant fire-resistant twisted pair manufacturing process according to claim 1, wherein the stretching in the step S3 needs to be performed by a tractor, and the pulling force of the tractor is 5-9 newtons.
7. The improved process of claim 1, wherein the twine is directly wound around the twisted pair core in step S4, and further wound by a twisting machine after winding.
8. The improved high flame retardant fire-resistant twisted pair cable manufacturing process of claim 1, wherein in step S5, the armor layer is made of a metal steel sheet, and the metal sheet and the copper wire mesh are welded.
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| CN202011447374.XA CN112562923A (en) | 2020-12-09 | 2020-12-09 | Improved high-flame-retardant fire-resistant twisted pair manufacturing process |
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| CN1068674A (en) * | 1991-06-28 | 1993-02-03 | 美国电话电报公司 | The insulated metallic conductors twisted-pair feeder and the manufacture method thereof that are used for transmitting high-frequency signal |
| CN105419100A (en) * | 2015-12-28 | 2016-03-23 | 常州思宇环保材料科技有限公司 | Preparation method of natural mineral flame retardant and radiation resistant cable material |
| CN108766672A (en) * | 2018-06-07 | 2018-11-06 | 飞讯达（厦门）信息技术有限公司 | Twisted-pair cable and preparation method thereof |
| CN109786033A (en) * | 2017-11-10 | 2019-05-21 | 湖北中涂科技有限公司 | A method of preparing the copolymer twisted pair of fourth containing second |
| CN209674987U (en) * | 2019-03-29 | 2019-11-22 | 浙江中大元通特种电缆有限公司 | For producing the flow-line equipment of cable |
| CN111599539A (en) * | 2020-07-03 | 2020-08-28 | 绵阳保和泰越通信线缆有限公司 | Non-shielding twisted pair cable and preparation method thereof |
| CN111681836A (en) * | 2020-06-19 | 2020-09-18 | 南昌冠东科技有限公司 | Twisted pair cable manufacturing apparatus and manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068674A (en) * | 1991-06-28 | 1993-02-03 | 美国电话电报公司 | The insulated metallic conductors twisted-pair feeder and the manufacture method thereof that are used for transmitting high-frequency signal |
| CN105419100A (en) * | 2015-12-28 | 2016-03-23 | 常州思宇环保材料科技有限公司 | Preparation method of natural mineral flame retardant and radiation resistant cable material |
| CN109786033A (en) * | 2017-11-10 | 2019-05-21 | 湖北中涂科技有限公司 | A method of preparing the copolymer twisted pair of fourth containing second |
| CN108766672A (en) * | 2018-06-07 | 2018-11-06 | 飞讯达（厦门）信息技术有限公司 | Twisted-pair cable and preparation method thereof |
| CN209674987U (en) * | 2019-03-29 | 2019-11-22 | 浙江中大元通特种电缆有限公司 | For producing the flow-line equipment of cable |
| CN111681836A (en) * | 2020-06-19 | 2020-09-18 | 南昌冠东科技有限公司 | Twisted pair cable manufacturing apparatus and manufacturing method |
| CN111599539A (en) * | 2020-07-03 | 2020-08-28 | 绵阳保和泰越通信线缆有限公司 | Non-shielding twisted pair cable and preparation method thereof |
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Application publication date: 20210326 |
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