CN107722535A - A kind of preparation method of fire-resistant silicon rubber cable - Google Patents
A kind of preparation method of fire-resistant silicon rubber cable Download PDFInfo
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- CN107722535A CN107722535A CN201710873383.7A CN201710873383A CN107722535A CN 107722535 A CN107722535 A CN 107722535A CN 201710873383 A CN201710873383 A CN 201710873383A CN 107722535 A CN107722535 A CN 107722535A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/08—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
- C08L51/085—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds on to polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/12—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes
- C08F283/124—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes on to polysiloxanes having carbon-to-carbon double bonds
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The present invention relates to a kind of preparation method of fire-resistant silicon rubber cable, belong to technical field of refractory materials.Point methyl vinyl silicone rubber and toluene are taken, is poured into autoclave, stirs, obtains stirring slurry；Acrylic acid and azodiisobutyronitrile are then added in stirring slurry, stirring, is cooled to room temperature, is filtered, is placed in baking oven, obtains modified methyl vinylsiloxane rubber；Water intaking magnesite head, ball milling, sieving, obtains shepardite powder；Shepardite powder is poured into ethanol solution, and adds γ aminopropyl triethoxysilane solution, is placed in water-bath, is stirred, is filtered, after Washing of Filter Cake, is placed in baking oven, obtains modified shepardite powder；Modified shepardite powder is poured into liquid-state epoxy resin, stirs, obtains hybrid resin；Obtained modified methyl vinylsiloxane rubber, modified shepardite powder and poly epihydric alcohol vinegar are kneaded, then obtained hybrid resin, initiator and crosslinking agent are added thereto, are kneaded, discharging, produces a kind of fire-resistant silicon rubber cable.
Description
Technical field
The present invention relates to a kind of preparation method of fire-resistant silicon rubber cable, belong to technical field of refractory materials.
Background technology
Fire-resistant wire and cable is different from common wiring cable, also different from flame-retardant electric wire and cable.Flame-retardant electric wire and cable is to make
The restrictive coating of cable is made of fire proofing, flame can be prevented to be spread in cable surface, and the cable that can be ceased certainly from fire;
But fire-resisting cable might not possess the characteristic of flame retardant cable, and flame proof electrical dimension is under flame condition
Be maintained to a kind of cable of circuit integrity, its act on be in fire ensure fire-fighting equipment being capable of continuation
Power supply.Preceding fire-resisting cable people are classified as two kinds of inorganic type and organic type, and organic type fire-resisting cable refers in insulating barrier
Nexine or the stratus mother's twining package tape of outer layer covers one, but the main matter of mica system band is still inorganic mineral mica powder, therefore
Organic type that can not be pure.Inorganic type is to be used as insulating barrier, other structures and common cable structure base by the use of mineral oxide town
This is identical, but sheath need to be wrapped up with copper sheath.
The fire resistance of Seed rubber will get well compared with ordinary rubber, and in burning, flame propagation velocity is slow for it, and rate of heat release is low, FF
And the residue after burning can form the ceramic-like material based on one layer of W silicon carbon compound, this layer of ceramic-like material can rise
To the effect of isolation flame.Therefore silicon rubber has advantageous advantage in terms of fire resistance, but currently with silicon rubber
Prepare that the research of refractory material is also few, with being continuously increased for depth of building, building will certainly be increased by fire
The necessary evacuation time of personnel during calamity, thus for guarantee personnel can safe escape, fire-fighting equipment at the appointed time can be just
Often operating, requirement of the designers to fire-resisting cable are also all the more harsh.
The polysiloxanes that the main chain of silicon rubber is made up of Si-O-Si keys, typically more than 150,000, this structure makes molecular weight
Obtaining osmanthus rubber has good heat endurance and weatherability, and has good electrical insulating property.It is different by introducing on side chain
The special groups such as functional group, such as methyl, vinyl, phenyl impart the different characteristic of clean rubber, as resistance to heightization warm nature, it is good
Cementability and oil resistivity etc..Silicon rubber can be divided into methyl second Kaesa bases silicon rubber, dimethyl osmanthus rubber, benzene according to the difference of side base
Base silicon rubber, fluorosioloxane rubber and phenylate support silicon rubber etc..Silicon rubber has business's temperature stability of notable feature, although at normal temperatures
Intensity is not as good as natural rubber or other many synthetic rubber, but silicon rubber its intensity when using for 200 DEG C or so is basically unchanged.
And the glass transition temperature of silicon rubber is usually -70 DEG C~-50 DEG C, therefore silastic material is waited suitable for many pole cold air,
This cold-resistant characteristic also has very important significance to fields such as Aero-Space, biomedicines.
Gui rubber has business's temperature stability of notable feature, although at normal temperatures intensity not as good as natural rubber or other very
More synthetic rubber, but silicon rubber its intensity when using for 200 DEG C or so is basically unchanged.And the glass transition temperature of footwear rubber
Degree is usually -70 DEG C ~ -50 DEG C, therefore silastic material is waited suitable for many pole cold air, and this cold-resistant characteristic is also navigated to aviation
My god, the field such as biomedicine has very important significance.
The content of the invention
The technical problems to be solved by the invention：The problem of for general cable camber performance and poor mechanical property, there is provided
A kind of preparation method of fire-resistant silicon rubber cable.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
（1）50 ~ 60g methyl vinyl silicone rubbers and 80 ~ 90g toluene are taken, is poured into autoclave, is stirred after being passed through nitrogen
Mix, obtain stirring slurry；
（2）2 ~ 3g acrylic acid and 0.1 ~ 0.3g azodiisobutyronitriles are added in stirring slurry, is filtered after stirring, is placed in baking oven and dries
It is dry, obtain modified methyl vinylsiloxane rubber；
（3）10 ~ 20g shepardites ball milling is taken to sieve, must fetch water magnesite powder；
（4）Shepardite powder is poured into 50 ~ 60g ethanol solutions, and adds gamma-aminopropyl-triethoxy-silane solution, water-bath
Pot heating, filters after stirring, washs filter cake with ethanol, shepardite powder must be modified after drying；
（5）Modified shepardite powder is poured into 10 ~ 20g liquid-state epoxy resin, stirs, obtains hybrid resin；
（6）Obtained modified methyl vinylsiloxane rubber, modified shepardite powder and 5 ~ 6g poly epihydric alcohols vinegar are added to close
Mill is kneaded, and hybrid resin, initiator and adhesive are added after stirring, is kneaded after adjusting temperature, is discharged, and is produced a kind of resistance to
Fiery silicone rubber for cable.
Step（1）The described speed for being passed through nitrogen is 20 ~ 25mL/min.
Step（1）The temperature of described autoclave is 60 ~ 80 DEG C.
Step（3）The mesh number of described shepardite powder sieving is 400.
Step（4）The mass fraction of described gamma-aminopropyl-triethoxy-silane solution is 10%.
Step（4）The mass fraction of described ethanol solution is 90%.
Compared with other method, advantageous effects are the present invention：
（1）The present invention is during fire-resistant silicon rubber cable is prepared, under nitrogen atmosphere with toluene and acrylic acid to methyl second
Alkenyl silicon rubber is modified, and stronger with cable toughness prepared by modified methyl vinylsiloxane rubber, bending strength has larger carry
It is high；
（2）The present invention, with epoxy resin coating modified brucite, enhances cable during fire-resistant silicon rubber cable is prepared
Fire resistance and insulating capacity.
Embodiment
Take 50 ~ 60g molecular weight is 620,000, contents of ethylene is 0.17% methyl vinyl silicone rubber and 80 ~ 90g first
Benzene, pour into autoclave, after being passed through 3 ~ 4min of nitrogen with 20 ~ 25mL/min speed, by temperature adjustment to 60 ~ 80 DEG C,
20 ~ 30min is stirred under 180 ~ 200r/min rotating speed, obtains stirring slurry；2 ~ 3g acrylic acid and 0.1 is then added in stirring slurry
~ 0.3g azodiisobutyronitriles, temperature adjustment stir 4 ~ 5h to 90 ~ 95 DEG C, with 300 ~ 320r/min rotating speed, and standing is cooled to room
Temperature, filtering, is positioned over 20 ~ 30min in 45 ~ 55 DEG C of baking oven, obtains modified methyl vinylsiloxane rubber；10 ~ 20g shepardites are taken,
It is placed in ball grinder with 300 ~ 350r/min rotating speed 30 ~ 40min of ball milling, crosses 400 mesh sieves, obtain shepardite powder；By shepardite
The mass fraction that powder pours into 50 ~ 60g is that and it is that 4 ~ 5g mass fractions are 10% to add mass fraction in 90% ethanol solution
Gamma-aminopropyl-triethoxy-silane solution, be placed in 80 ~ 90 DEG C of water-bath, with 180 ~ 200r/min rotating speed stirring 2.0 ~
2.5h, filter, after filter cake is washed into 4 ~ 5 times with absolute ethyl alcohol, be placed in 12 ~ 13h in 55 ~ 65 DEG C of baking oven, obtain modified shepardite
Powder；Modified shepardite powder is poured into 10 ~ 20g liquid-state epoxy resin, stirs, obtains hybrid resin；Change obtained
Property methyl vinyl silicone rubber, modified shepardite powder and 5 ~ 6g poly (glycidyl methacrylate)s added to banbury progress
It is kneaded, temperature adjustment is kneaded 15 ~ 20min, then by obtained mixing to 160 ~ 180 DEG C under 100 ~ 120r/min rotating speed
Resin, 1 ~ 2g initiators and 4 ~ 5g crosslinking agents are added thereto, and for temperature adjustment to 120 ~ 130 DEG C, rotating speed is constant, are kneaded 8 ~ 9min,
Discharging, produces a kind of fire-resistant silicon rubber cable.The model E44 of described liquid-state epoxy resin.Described initiator is peroxide
Change benzoyl.Described crosslinking agent is Diethylenetriamine.
Example 1
50g molecular weight is 620,000, contents of ethylene is 0.17% methyl vinyl silicone rubber and 80g toluene are taken, pours into high pressure
In reactor, after being passed through nitrogen 3min with 20mL/min speed, by temperature adjustment to 60 DEG C, stirred under 180r/min rotating speed
20min is mixed, obtains stirring slurry；2g acrylic acid and 0.1g azodiisobutyronitriles are then added in stirring slurry, temperature adjustment to 90 DEG C,
4h is stirred with 300r/min rotating speed, standing is cooled to room temperature, filters, is positioned over 20min in 45 DEG C of baking oven, obtains modified methyl
Vinylsiloxane rubber；10g shepardites are taken, is placed in ball grinder with 300r/min rotating speed ball milling 30min, is crossed 400 mesh sieves, obtain water
Magnesite powder；It is that and it is 4g matter to add mass fraction in 90% ethanol solution by the mass fraction that shepardite powder pours into 50g
The gamma-aminopropyl-triethoxy-silane solution that fraction is 10% is measured, is placed in 80 DEG C of water-bath, is stirred with 180r/min rotating speed
2.0h is mixed, is filtered, after filter cake is washed into 4 times with absolute ethyl alcohol, is placed in 12h in 55 DEG C of baking oven, obtains modified shepardite powder；Will
Modified shepardite powder is poured into 10g models E44 liquid-state epoxy resin, is stirred, is obtained hybrid resin；By obtained modification
Methyl vinyl silicone rubber, modified shepardite powder and 5g poly (glycidyl methacrylate)s are mixed added to banbury
Refining, temperature adjustment is kneaded 15min to 160 DEG C under 100r/min rotating speed, then by obtained hybrid resin, 1g peroxidating
Benzoyl and 4g Diethylenetriamines are added thereto, and for temperature adjustment to 120 DEG C, rotating speed is constant, are kneaded 8min, discharging, are produced a kind of resistance to
Fiery silicone rubber for cable.
Example 2
55g molecular weight is 620,000, contents of ethylene is 0.17% methyl vinyl silicone rubber and 85g toluene are taken, pours into high pressure
In reactor, after being passed through nitrogen 3min with 22mL/min speed, by temperature adjustment to 70 DEG C, stirred under 190r/min rotating speed
25min is mixed, obtains stirring slurry；2g acrylic acid and 0.2g azodiisobutyronitriles are then added in stirring slurry, temperature adjustment to 92 DEG C,
4h is stirred with 310r/min rotating speed, standing is cooled to room temperature, filters, is positioned over 25min in 50 DEG C of baking oven, obtains modified methyl
Vinylsiloxane rubber；15g shepardites are taken, is placed in ball grinder with 320r/min rotating speed ball milling 35min, is crossed 400 mesh sieves, obtain water
Magnesite powder；It is that and it is 4.5g to add mass fraction in 90% ethanol solution by the mass fraction that shepardite powder pours into 55g
Mass fraction is 10% gamma-aminopropyl-triethoxy-silane solution, is placed in 85 DEG C of water-bath, with 190r/min rotating speed
2.2h is stirred, is filtered, after filter cake is washed into 4 times with absolute ethyl alcohol, is placed in 12h in 60 DEG C of baking oven, obtains modified shepardite powder；
Modified shepardite powder is poured into 15g models E44 liquid-state epoxy resin, stirs, obtains hybrid resin；Change obtained
Property methyl vinyl silicone rubber, modified shepardite powder and 5.5g poly (glycidyl methacrylate)s added to banbury progress
It is kneaded, temperature adjustment is kneaded 17min to 170 DEG C under 110r/min rotating speed, then by obtained hybrid resin, 1g peroxides
Change benzoyl and 4g Diethylenetriamines are added thereto, for temperature adjustment to 125 DEG C, rotating speed is constant, is kneaded 8min, discharging, produces one kind
Fire-resistant silicon rubber cable.
Example 3
60g molecular weight is 620,000, contents of ethylene is 0.17% methyl vinyl silicone rubber and 90g toluene are taken, pours into high pressure
In reactor, after being passed through nitrogen 4min with 25mL/min speed, by temperature adjustment to 80 DEG C, stirred under 200r/min rotating speed
30min is mixed, obtains stirring slurry；3g acrylic acid and 0.3g azodiisobutyronitriles are then added in stirring slurry, temperature adjustment to 95 DEG C,
5h is stirred with 320r/min rotating speed, standing is cooled to room temperature, filters, is positioned over 30min in 55 DEG C of baking oven, obtains modified methyl
Vinylsiloxane rubber；20g shepardites are taken, is placed in ball grinder with 350r/min rotating speed ball milling 40min, is crossed 400 mesh sieves, obtain water
Magnesite powder；It is that and it is 5g matter to add mass fraction in 90% ethanol solution by the mass fraction that shepardite powder pours into 60g
The gamma-aminopropyl-triethoxy-silane solution that fraction is 10% is measured, is placed in 90 DEG C of water-bath, is stirred with 200r/min rotating speed
2.5h is mixed, is filtered, after filter cake is washed into 5 times with absolute ethyl alcohol, is placed in 13h in 65 DEG C of baking oven, obtains modified shepardite powder；Will
Modified shepardite powder is poured into 20g models E44 liquid-state epoxy resin, is stirred, is obtained hybrid resin；By obtained modification
Methyl vinyl silicone rubber, modified shepardite powder and 6g poly (glycidyl methacrylate)s are mixed added to banbury
Refining, temperature adjustment is kneaded 20min to 180 DEG C under 120r/min rotating speed, then by obtained hybrid resin, 2g peroxidating
Benzoyl and 5g Diethylenetriamines are added thereto, and for temperature adjustment to 130 DEG C, rotating speed is constant, are kneaded 9min, discharging, are produced a kind of resistance to
Fiery silicone rubber for cable.
The silicone rubber for cable that a kind of fire-resistant silicon rubber cable being prepared into and Zhu Jiang households monopolized store produce is detected,
Specific detection is as follows：
（1）Chain elastomeric material is made 80 × 10 × 4 by bending strength according to GB/TF9341-2008 standards（mm×mm×mm）'s
Batten, and be put into Muffle furnace in 1000 DEG C of calcinations 30 minutes, according to the bending strength of batten after three-point bend test calcination, survey
Pilot production Instron universal testing machines, test speed 5mm/min.
（2）Mechanics Performance Testing uses rainbow Instron universal testing machines, is surveyed according to ASTM/DF638 standards
Examination, draw speed 50min/min.
Specific test result such as table 1.
The fire-resistant silicon rubber cable performance of table 1 characterizes
As shown in Table 1, a kind of fire-resistant silicon rubber cable produced by the present invention, cable toughness is stronger, and bending strength has larger
Improve.
Claims (6)
1. a kind of preparation method of fire-resistant silicon rubber cable, its feature are being with specific preparation process：
50 ~ 60g methyl vinyl silicone rubbers and 80 ~ 90g toluene are taken, is poured into autoclave, stirs, obtains after being passed through nitrogen
Stirring slurry；
2 ~ 3g acrylic acid and 0.1 ~ 0.3g azodiisobutyronitriles are added in stirring slurry, is filtered after stirring, is placed in baking oven and dries,
Obtain modified methyl vinylsiloxane rubber；
The honed sieve of 10 ~ 20g shepardites head shoot is taken, must fetch water magnesium stone dust；
Shepardite powder is poured into 50 ~ 60g ethanol solutions, and adds gamma-aminopropyl-triethoxy-silane solution, water-bath adds
Heat, filtered after stirring, wash filter cake with ethanol, shepardite powder must be modified after drying；
Modified shepardite powder is poured into 10 ~ 20g liquid-state epoxy resin, stirs, obtains hybrid resin；
Obtained modified methyl vinylsiloxane rubber, modified shepardite powder and 5 ~ 6g poly (glycidyl methacrylate)s are added
Add to banbury to be kneaded, hybrid resin, initiator and adhesive are added after stirring, be kneaded after adjusting temperature, discharge, produce
A kind of fire-resistant silicon rubber cable.
A kind of 2. preparation method of fire-resistant silicon rubber cable according to claim 1, it is characterised in that：Step（1）It is described
The speed for being passed through nitrogen be 20 ~ 25mL/min.
A kind of 3. preparation method of fire-resistant silicon rubber cable according to claim 1, it is characterised in that：Step（1）It is described
Autoclave temperature be 60 ~ 80 DEG C.
A kind of 4. preparation method of fire-resistant silicon rubber cable according to claim 1, it is characterised in that：Step（3）It is described
Shepardite powder sieving mesh number be 400.
A kind of 5. preparation method of fire-resistant silicon rubber cable according to claim 1, it is characterised in that：Step（4）It is described
Gamma-aminopropyl-triethoxy-silane solution mass fraction be 10%.
A kind of 6. preparation method of fire-resistant silicon rubber cable according to claim 1, it is characterised in that：Step（4）It is described
Ethanol solution mass fraction be 90%.
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| CN109161208A (en) * | 2018-07-18 | 2019-01-08 | 曹佳男 | A kind of high fire-retardance corrosion proof cable material and preparation method thereof |
| CN110143026A (en) * | 2019-05-14 | 2019-08-20 | 如皋天安电气科技有限公司 | A kind of silicon rubber composite material |
| CN111785424A (en) * | 2020-08-10 | 2020-10-16 | 安徽华海特种电缆集团有限公司 | Silicon rubber insulation mobile flat cable |
| CN115746570A (en) * | 2022-12-07 | 2023-03-07 | 华力通线缆股份有限公司 | Ceramic fire-resistant sheath material and medium-voltage fire-resistant cable |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109161208A (en) * | 2018-07-18 | 2019-01-08 | 曹佳男 | A kind of high fire-retardance corrosion proof cable material and preparation method thereof |
| CN110143026A (en) * | 2019-05-14 | 2019-08-20 | 如皋天安电气科技有限公司 | A kind of silicon rubber composite material |
| CN111785424A (en) * | 2020-08-10 | 2020-10-16 | 安徽华海特种电缆集团有限公司 | Silicon rubber insulation mobile flat cable |
| CN115746570A (en) * | 2022-12-07 | 2023-03-07 | 华力通线缆股份有限公司 | Ceramic fire-resistant sheath material and medium-voltage fire-resistant cable |
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Application publication date: 20180223 |