CN107619594A - A kind of production method of fire-retardant power line - Google Patents
A kind of production method of fire-retardant power line Download PDFInfo
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- CN107619594A CN107619594A CN201710841057.8A CN201710841057A CN107619594A CN 107619594 A CN107619594 A CN 107619594A CN 201710841057 A CN201710841057 A CN 201710841057A CN 107619594 A CN107619594 A CN 107619594A
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Abstract
The present invention relates to a kind of production method of fire-retardant power line, by using special flame-retardant layer made of aqueous polyurethane flame-retarded resin, greatly improve the fire resistance of power line, significantly improve heat conduction, the thermal diffusivity of power line, not only realize the leap of fire resistance, and power line is possessed special performance of setting fire, greatly improve the security of power line.The calorific value flame-retardant layer is using low smoke and zero halogen, decomposition temperature height, the halogen-free polymeric material of good mechanical property simultaneously, due to power line not halide and metal oxide, pernicious gas and a large amount of smog will not be produced in burning, in the absence of the possibility for causing secondary disaster, and also there is good mechanical performance and electric property, meet the requirement of power line.
Description
Technical field
The invention belongs to electrical equipment technical field, and in particular to a kind of production method of fire-retardant power line.
Background technology
Power line is the electric wire for transmitting electric current, and copper wire is the core of power line.The mode of usual electric current transmission is a little
To a transmission.Power line can be divided into AC AC power cords and DC direct current supply lines according to purposes, and usual ac power cable is to pass through
The wire rod of the higher alternating current of voltage, this kind of wire rod needs unified standard to obtain safety certification side because voltage is higher can be formal
Production.The structure of power line mainly wants oversheath, inner sheath, conductor, and common transmission conductor has the wire of copper, aluminium material
Deng.
Power line in use can be with high temperature, therefore is easy to combustion case occur, causes inside power line
Copper wire is exposed, and causes short-circuit and huge potential safety hazard.Therefore, power line is needed by good fire resistance.
The content of the invention
In order to solve the above problems, the invention provides a kind of production method of fire-retardant power line.
The present invention is achieved through the following technical solutions：
A kind of production method of fire-retardant power line, it is specific as follows:Twisting element is fixed using twining package tape, by twisting element
After the completion of twisted, then put special flame-retardant layer；
The special flame-retardant layer, according to the mass fraction, it is made by following component:Aqueous polyurethane flame-retarded resin 60-70 parts,
Nano-graphene 1.5-1.8 parts, vinylacetate 8-10 parts, calcium powder 50-60 parts, heat stabilizer 4-5 parts, liquid paraffin 0.5-1
Part, epoxidized soybean oil 0.2-0.5 parts, DOTP 45-50 parts, rare earth nitrades 2-4 parts, coupling agent 1-1.5 parts；
The aqueous polyurethane flame-retarded resin, specially its preparation method, following steps:
(1) according to the mass fraction, PTMG-2000 100-200 parts, polyoxypropyleneglycol 5-8 parts, poly- hexanedioic acid third are taken
Hot blast is air-dried to water content below 3% after the mixing of glycol 10-12 parts, is taken off then at vacuum for vacuum under the conditions of 0.03-0.06MPa
Water to moisture content is less than 0.1%, obtains material A；
(2) by the material A, hydrogenated diphenyl methane diisocyanate, tetramethyl-ring hexyl diisocyanate, polyethers,
Pla-pcl 100-120 in mass ratio:3:5:5:It is placed in after 0.1 mixing in reactor and is heated to 80-85 DEG C, is incubated 40-
After 45 minutes, the catalyst of 1 times of pla-pcl mass fraction is added, continues 100r/min stirring in course of reaction；
(3) NCO content in reactor is detected, when NCO content reaches theoretical value, adds 15 times of pla-pcl quality
Number dimethylethanolamine continues to react 12-18 minutes, obtains performed polymer；
(4) obtained performed polymer is quickly poured into the kettle with deionized water, chain extending reaction, removes acetone, stir
After produce.
Further, the calcium powder, by light weight calcium, calcium activated, heavy calcium in mass ratio 3:5:After 1 is well mixed, add water
Ball milling 5-8 hours, sieve 80 mesh after drying moisture be made.
Further, the heat stabilizer, it is organic tin stabilizer.
Further, the coupling agent, it is titanate coupling agent.
Beneficial effects of the present invention：The present invention is carried significantly by special flame-retardant layer made of aqueous polyurethane flame-retarded resin
The fire resistance of power line has been risen, heat conduction, the thermal diffusivity of power line has been significantly improved, not only realizes the leap of fire resistance,
And power line is possessed special performance of setting fire, greatly improve the security of power line.The calorific value is fire-retardant simultaneously
Layer is using low smoke and zero halogen, decomposition temperature is high, the halogen-free polymeric material of good mechanical property, due to power line not halide and gold
Belong to oxide, will not produce pernicious gas and a large amount of smog in burning, in the absence of causing the possibility of secondary disaster, and also have
There are good mechanical performance and electric property, meet the requirement of power line.
Embodiment
Embodiment 1
A kind of production method of fire-retardant power line, it is specific as follows:Twisting element is fixed using twining package tape, by twisting element
After the completion of twisted, then put special flame-retardant layer；
The special flame-retardant layer, according to the mass fraction, it is made by following component:60 parts of aqueous polyurethane flame-retarded resin, receive
1.5 parts of graphene of rice, 8 parts of vinylacetate, 50 parts of calcium powder, 4 parts of heat stabilizer, 0.5 part of liquid paraffin, epoxidized soybean oil 0.2
Part, 45 parts of DOTP, 2 parts of rare earth nitrades, 1 part of coupling agent；
The aqueous polyurethane flame-retarded resin, specially its preparation method, following steps:
(1) according to the mass fraction, 100 parts of PTMG-2000,5 parts of polyoxypropyleneglycol, poly- hexanedioic acid propane diols 10 are taken
Hot blast is air-dried to water content below 3% after part mixing, is less than then at vacuum for vacuum dehydration to moisture content under the conditions of 0.03MPa
0.1%, obtain material A；
(2) by the material A, hydrogenated diphenyl methane diisocyanate, tetramethyl-ring hexyl diisocyanate, polyethers,
Pla-pcl in mass ratio 100:3:5:5:It is placed in after 0.1 mixing in reactor and is heated to 80-85 DEG C, is incubated 40 minutes
Afterwards, the catalyst of 1 times of pla-pcl mass fraction is added, continues 100r/min stirring in course of reaction；
(3) NCO content in reactor is detected, when NCO content reaches theoretical value, adds 15 times of pla-pcl quality
Number dimethylethanolamine continues reaction 12 minutes, obtains performed polymer；
(4) obtained performed polymer is quickly poured into the kettle with deionized water, chain extending reaction, removes acetone, stir
After produce.
Further, the calcium powder, by light weight calcium, calcium activated, heavy calcium in mass ratio 3:5:After 1 is well mixed, add water
Ball milling 5-8 hours, sieve 80 mesh after drying moisture be made.
Further, the heat stabilizer, it is organic tin stabilizer.
Further, the coupling agent, it is titanate coupling agent.
Embodiment 2
A kind of production method of fire-retardant power line, it is specific as follows:Twisting element is fixed using twining package tape, by twisting element
After the completion of twisted, then put special flame-retardant layer；
The special flame-retardant layer, according to the mass fraction, it is made by following component:70 parts of aqueous polyurethane flame-retarded resin, receive
1.8 parts of graphene of rice, 10 parts of vinylacetate, 60 parts of calcium powder, 5 parts of heat stabilizer, 1 part of liquid paraffin, epoxidized soybean oil 0.5
Part, 50 parts of DOTP, 4 parts of rare earth nitrades, 1.5 parts of coupling agent；
The aqueous polyurethane flame-retarded resin, specially its preparation method, following steps:
(1) according to the mass fraction, 200 parts of PTMG-2000,8 parts of polyoxypropyleneglycol, poly- hexanedioic acid propane diols 12 are taken
Hot blast is air-dried to water content below 3% after part mixing, is less than then at vacuum for vacuum dehydration to moisture content under the conditions of 0.06MPa
0.1%, obtain material A；
(2) by the material A, hydrogenated diphenyl methane diisocyanate, tetramethyl-ring hexyl diisocyanate, polyethers,
Pla-pcl in mass ratio 120:3:5:5:It is placed in after 0.1 mixing in reactor and is heated to 80-85 DEG C, is incubated 45 minutes
Afterwards, the catalyst of 1 times of pla-pcl mass fraction is added, continues 100r/min stirring in course of reaction；
(3) NCO content in reactor is detected, when NCO content reaches theoretical value, adds 15 times of pla-pcl quality
Number dimethylethanolamine continues reaction 18 minutes, obtains performed polymer；
(4) obtained performed polymer is quickly poured into the kettle with deionized water, chain extending reaction, removes acetone, stir
After produce.
Further, the calcium powder, by light weight calcium, calcium activated, heavy calcium in mass ratio 3:5:After 1 is well mixed, add water
Ball milling 8 hours, sieve 80 mesh after drying moisture be made.
Further, the heat stabilizer, it is organic tin stabilizer.
Further, the coupling agent, it is titanate coupling agent.
Embodiment 3
A kind of production method of fire-retardant power line, it is specific as follows:Twisting element is fixed using twining package tape, by twisting element
After the completion of twisted, then put special flame-retardant layer；
The special flame-retardant layer, according to the mass fraction, it is made by following component:65 parts of aqueous polyurethane flame-retarded resin, receive
1.6 parts of graphene of rice, 9 parts of vinylacetate, 55 parts of calcium powder, 4.5 parts of heat stabilizer, 0.8 part of liquid paraffin, epoxidized soybean oil
0.3 part, 48 parts of DOTP, 3 parts of rare earth nitrades, 1.2 parts of coupling agent；
The aqueous polyurethane flame-retarded resin, specially its preparation method, following steps:
(1) according to the mass fraction, 150 parts of PTMG-2000,7 parts of polyoxypropyleneglycol, poly- hexanedioic acid propane diols 11 are taken
Hot blast is air-dried to water content below 3% after part mixing, is less than then at vacuum for vacuum dehydration to moisture content under the conditions of 0.04MPa
0.1%, obtain material A；
(2) by the material A, hydrogenated diphenyl methane diisocyanate, tetramethyl-ring hexyl diisocyanate, polyethers,
Pla-pcl in mass ratio 110:3:5:5:It is placed in after 0.1 mixing in reactor and is heated to 80-85 DEG C, is incubated 43 minutes
Afterwards, the catalyst of 1 times of pla-pcl mass fraction is added, continues 100r/min stirring in course of reaction；
(3) NCO content in reactor is detected, when NCO content reaches theoretical value, adds 15 times of pla-pcl quality
Number dimethylethanolamine continues reaction 14 minutes, obtains performed polymer；
(4) obtained performed polymer is quickly poured into the kettle with deionized water, chain extending reaction, removes acetone, stir
After produce.
Further, the calcium powder, by light weight calcium, calcium activated, heavy calcium in mass ratio 3:5:After 1 is well mixed, add water
Ball milling 6 hours, sieve 80 mesh after drying moisture be made.
Further, the heat stabilizer, it is organic tin stabilizer.
Further, the coupling agent, it is titanate coupling agent.
Control group
Existing fire-retardant power line production method.
By experiment, compared to the fire-retardant power line production method of existing skill, the present invention passes through the fire-retardant tree of aqueous polyurethane
Special flame-retardant layer made of fat, the fire resistance of power line is greatly improved, significantly improves heat conduction, the thermal diffusivity of power line,
The leap of fire resistance is not only realized, and power line is possessed special performance of setting fire, greatly improves power line
Security.The calorific value flame-retardant layer is using low smoke and zero halogen, decomposition temperature height, the halogen free polymer material of good mechanical property simultaneously
Material, due to power line not halide and metal oxide, pernicious gas and a large amount of smog will not be produced in burning, is not present
The possibility of secondary disaster is caused, and also there is good mechanical performance and electric property, meets the requirement of power line.
Finally it should be noted that：The preferred embodiments of the present invention are these are only, are not intended to limit the invention, although
The present invention is described in detail with reference to embodiment, for those skilled in the art, it still can be to foregoing
Technical scheme described in each embodiment is modified, or to which part technical characteristic carry out equivalent substitution, but it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements made etc., the protection of the present invention should be included in
Within the scope of.
Claims (6)
1. a kind of production method of fire-retardant power line, it is characterised in that specific as follows:Twisting element is fixed using twining package tape,
After the completion of twisting element is twisted, then put special flame-retardant layer；
The special flame-retardant layer, according to the mass fraction, it is made by following component:Aqueous polyurethane flame-retarded resin 60-70 parts, nanometer
Graphene 1.5-1.8 parts, vinylacetate 8-10 parts, calcium powder 50-60 parts, heat stabilizer 4-5 parts, liquid paraffin 0.5-1 parts, ring
Oxygen soybean oil 0.2-0.5 parts, DOTP 45-50 parts, rare earth nitrades 2-4 parts, coupling agent 1-1.5 parts；
The aqueous polyurethane flame-retarded resin, specially its preparation method, following steps:
(1) according to the mass fraction, PTMG-2000 100-200 parts, polyoxypropyleneglycol 5-8 parts, poly- hexanedioic acid propane diols are taken
10-12 parts mixing after hot blast air-dry to water content below 3%, then at vacuum be 0.03-0.06MPa under the conditions of vacuum dehydration extremely
Moisture content is less than 0.1%, obtains material A；
(2) by the material A, hydrogenated diphenyl methane diisocyanate, tetramethyl-ring hexyl diisocyanate, polyethers, it is poly-
Lactone 100-120 in mass ratio:3:5:5:It is placed in after 0.1 mixing in reactor and is heated to 80-85 DEG C, 40-45 points of insulation
Zhong Hou, the catalyst of 1 times of pla-pcl mass fraction is added, continues 100r/min stirring in course of reaction；
(3) NCO content in reactor is detected, when NCO content reaches theoretical value, adds 15 times of pla-pcl mass fractions
Dimethylethanolamine continues to react 12-18 minutes, obtains performed polymer；
(4) obtained performed polymer is quickly poured into the kettle with deionized water, chain extending reaction, removes acetone, after stirring i.e.
.
A kind of 2. production method of fire-retardant power line according to claim 1, it is characterised in that the special flame-retardant layer,
According to the mass fraction, it is made by following component:65 parts of aqueous polyurethane flame-retarded resin, 1.6 parts of nano-graphene, vinylacetate
9 parts, 55 parts of calcium powder, 4.5 parts of heat stabilizer, 0.8 part of liquid paraffin, 0.3 part of epoxidized soybean oil, DOTP 48
Part, 3 parts of rare earth nitrades, 1.2 parts of coupling agent.
A kind of 3. production method of fire-retardant power line according to claim 1 or 2, it is characterised in that the water-based poly- ammonia
Ester flame-retarded resin, specially its preparation method, following steps:
(1) according to the mass fraction, take 150 parts of PTMG-2000,7 parts of polyoxypropyleneglycol, 11 parts of poly- hexanedioic acid propane diols mixed
Hot blast is air-dried to water content below 3% after conjunction, is less than then at vacuum for vacuum dehydration to moisture content under the conditions of 0.04MPa
0.1%, obtain material A；
(2) by the material A, hydrogenated diphenyl methane diisocyanate, tetramethyl-ring hexyl diisocyanate, polyethers, it is poly-
Lactone in mass ratio 110:3:5:5:It is placed in after 0.1 mixing in reactor and is heated to 80-85 DEG C, after being incubated 43 minutes, is added
Enter the catalyst of 1 times of pla-pcl mass fraction, continue 100r/min stirring in course of reaction；
(3) NCO content in reactor is detected, when NCO content reaches theoretical value, adds 15 times of pla-pcl mass fractions
Dimethylethanolamine continues reaction 14 minutes, obtains performed polymer；
(4) obtained performed polymer is quickly poured into the kettle with deionized water, chain extending reaction, removes acetone, after stirring i.e.
.
A kind of 4. production method of fire-retardant power line according to claim 1 or 2, it is characterised in that:The calcium powder, by light
Matter calcium, calcium activated, heavy calcium in mass ratio 3:5:After 1 is well mixed, add water for ball milling 5-8 hours, moisture is dried after 80 mesh that sieve
It is made.
A kind of 5. production method of fire-retardant power line according to claim 1 or 2, it is characterised in that:The heat stabilizer,
For organic tin stabilizer.
A kind of 6. production method of fire-retardant power line according to claim 1 or 2, it is characterised in that:The coupling agent, it is
Titanate coupling agent.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116994792A (en) * | 2023-08-02 | 2023-11-03 | 祥龙实业控股(海南)有限公司 | Graphene copper-clad aluminum alloy wire, preparation method thereof and electric wire and cable |
| CN116994792B (en) * | 2023-08-02 | 2024-05-14 | 彭丽楠 | Graphene copper-clad aluminum alloy wire, preparation method thereof and electric wire and cable |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572517Y (en) * | 2002-08-30 | 2003-09-10 | 李剑 | Fire-resistant wire and cable |
| CN1978481A (en) * | 2005-12-01 | 2007-06-13 | 天津科技大学 | Self-extinguishing waterborn polyurethane material |
| CN101440154A (en) * | 2008-12-31 | 2009-05-27 | 陕西科技大学 | Aqueous polyurethane and preparation thereof |
| CN101805436A (en) * | 2009-02-12 | 2010-08-18 | 浙江传化股份有限公司 | Bi-component reaction-type flame-retardant waterborne polyurethane and preparation method thereof |
| CN103130976A (en) * | 2011-12-01 | 2013-06-05 | 孟宪清 | Waterborne polyurethane synthetic technology |
| CN104341566A (en) * | 2014-10-22 | 2015-02-11 | 江苏华夏制漆科技有限公司 | Preparation method of waterborne polyurethane resin |
| CN205177420U (en) * | 2015-12-08 | 2016-04-20 | 巴州卓达电线电缆有限公司 | Novel fire -retardant aluminum alloy cable |
| CN105860020A (en) * | 2016-04-19 | 2016-08-17 | 滁州环球聚氨酯科技有限公司 | High-strength hydrophobic flame-retardant polyurethane cable outer sheath |
| CN106700019A (en) * | 2016-12-30 | 2017-05-24 | 姚东生 | Melamine-modified waterborne polyurethane flame-retarded resin and preparation method thereof |
| CN107033322A (en) * | 2017-05-11 | 2017-08-11 | 佛山市尚峰高分子科技有限公司 | A kind of aqueous polyurethane matting resin |
-
2017
- 2017-09-18 CN CN201710841057.8A patent/CN107619594A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572517Y (en) * | 2002-08-30 | 2003-09-10 | 李剑 | Fire-resistant wire and cable |
| CN1978481A (en) * | 2005-12-01 | 2007-06-13 | 天津科技大学 | Self-extinguishing waterborn polyurethane material |
| CN101440154A (en) * | 2008-12-31 | 2009-05-27 | 陕西科技大学 | Aqueous polyurethane and preparation thereof |
| CN101805436A (en) * | 2009-02-12 | 2010-08-18 | 浙江传化股份有限公司 | Bi-component reaction-type flame-retardant waterborne polyurethane and preparation method thereof |
| CN103130976A (en) * | 2011-12-01 | 2013-06-05 | 孟宪清 | Waterborne polyurethane synthetic technology |
| CN104341566A (en) * | 2014-10-22 | 2015-02-11 | 江苏华夏制漆科技有限公司 | Preparation method of waterborne polyurethane resin |
| CN205177420U (en) * | 2015-12-08 | 2016-04-20 | 巴州卓达电线电缆有限公司 | Novel fire -retardant aluminum alloy cable |
| CN105860020A (en) * | 2016-04-19 | 2016-08-17 | 滁州环球聚氨酯科技有限公司 | High-strength hydrophobic flame-retardant polyurethane cable outer sheath |
| CN106700019A (en) * | 2016-12-30 | 2017-05-24 | 姚东生 | Melamine-modified waterborne polyurethane flame-retarded resin and preparation method thereof |
| CN107033322A (en) * | 2017-05-11 | 2017-08-11 | 佛山市尚峰高分子科技有限公司 | A kind of aqueous polyurethane matting resin |
Non-Patent Citations (5)
| Title |
|---|
| 尹洪峰，等: "《功能复合材料》", 31 August 2013, 冶金工业出版社 * |
| 梁文杰: "《石油化学》", 31 March 1995, 石油大学出版社 * |
| 王中平，等: "《表面物理化学》", 30 September 2015, 同济大学出版社 * |
| 王文广，等: "《塑料改性实用技术》", 31 March 2000, 中国轻工业出版社 * |
| 石富: "《稀土冶金技术》", 30 April 2009, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116994792A (en) * | 2023-08-02 | 2023-11-03 | 祥龙实业控股(海南)有限公司 | Graphene copper-clad aluminum alloy wire, preparation method thereof and electric wire and cable |
| CN116994792B (en) * | 2023-08-02 | 2024-05-14 | 彭丽楠 | Graphene copper-clad aluminum alloy wire, preparation method thereof and electric wire and cable |
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Application publication date: 20180123 |