CN107383527A - Cable cover(ing) fire proofing and preparation method thereof - Google Patents
Cable cover(ing) fire proofing and preparation method thereof Download PDFInfo
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- CN107383527A CN107383527A CN201710581359.6A CN201710581359A CN107383527A CN 107383527 A CN107383527 A CN 107383527A CN 201710581359 A CN201710581359 A CN 201710581359A CN 107383527 A CN107383527 A CN 107383527A
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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
- C08L2314/00—Polymer mixtures characterised by way of preparation
- C08L2314/06—Metallocene or single site catalysts
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- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
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- Organic Insulating Materials (AREA)
Abstract
The present invention proposes a kind of cable cover(ing) fire proofing and preparation method thereof, according to the number of parts by weight, including following raw material：2~6 parts of 5~10 parts of metallocene PE, 20~30 parts of ethylene-vinyl acetate copolymer, 60~70 parts of polyvinyl resin, 6~12 parts of plasticizer, 10~20 parts of composite flame-retardant agent, 3~6 parts of organic silicone, 1~3 part of antioxidant and lubricant, wherein, composite flame-retardant agent is prepared by magnesium salts, nanometer silicon carbide and CNT.Preparation method：Each raw material is put into banbury, when being heated to 115~135 DEG C, lifting floating weight of banbury mixer carries out stirring, after stirring terminates, continue banburying to banburying built-in temperature and reach 145~155 DEG C, stop heating, it is further continued for banburying 2~5 minutes, is then made by single screw extrusion machine extruding pelletization.The fire proofing good flame retardation effect, has the advantages that high oxygen index (OI) and strong self-extinguishment on the premise of cable cover(ing) machinery performance is met.
Description
Technical field
The invention belongs to fire proofing technical field, and in particular to a kind of cable cover(ing) fire proofing and its preparation side
Method.
Background technology
Need to extrude plastic sheath material in cable outer layer, the sheath material of usual high voltage power cable uses the poly- second of black
Alkene material, appearance coating electrically conductive graphite or conductive polyethylene, to prevent high voltage induction voltage breakdown, reduce surface induction voltage.
But laid with the undergroundization of city high-voltage fence circuit, it is desirable to which cable has low-smoke non-halogen flame-retardant function, and its sheath material must
Low-smoke non-halogen flame-retardant black polyethylene material must be used, and the low-smoke halogen-free flame-retardant sheath material provided in the market is generally adopted
With a large amount of inorganic aluminium hydroxide, magnesium hydroxide flame retardant systems are added in ethylene-vinyl acetate copolymer system, due to inorganic fire-retarded
Between the powder content of agent generally reaches 50%-70%, this requires matrix material and powder to have good pardon, ethene vinegar
Sour ethylene copolymer is a kind of ideal material, to widely use.But due to the machine of ethylene-vinyl acetate copolymer material
Tool intensity, hardness are relatively low, cause the mechanical strength of material low, wear no resistance, and cause cable cable meter during mounting and installation
Layer sheath is damaged, and especially electric cable with large cross-section situation is even more serious, once cable sheath rupture is likely to cause network system
Unstable, cable body can be by various infringements, it is impossible to effectively effective operation of protection cable；And existing low smoke and zero halogen resistance
Combustion sheath material caking property is bad, and the electrically conductive graphite layer or conductive polyethylene layer for causing surface can come off, and make cable partial discharge electric current
It can not effectively discharge, influence effective use of high-tension cable.
The content of the invention
The present invention proposes a kind of cable cover(ing) fire proofing, and the fire proofing is before cable cover(ing) machinery performance is met
Put, good flame retardation effect, there is high oxygen index (OI) and strong self-extinguishment.
The technical proposal of the invention is realized in this way：
A kind of cable cover(ing) fire proofing, according to the number of parts by weight, including following raw material：
5~10 parts of metallocene PE, 20~30 parts of ethylene-vinyl acetate copolymer, 60~70 parts of polyvinyl resin, increasing
2~6 parts of 6~12 parts of agent, 10~20 parts of composite flame-retardant agent, 3~6 parts of organic silicone, 1~3 part of antioxidant and lubricant are moulded,
Wherein, composite flame-retardant agent is prepared by magnesium salts, nanometer silicon carbide and CNT.
Preferably, the preparation method of the composite flame-retardant agent：
The CNT of the nanometer silicon carbide of 6~12 parts by weight and 2~8 parts by weight is added to 80~90 parts by weight
In the ethanol solution of magnesium salts, be sufficiently stirred it is scattered after add the surfactants of 1~2 parts by weight, scattered after ultrasonic disperse
Suspension in add 50~100 parts by weight ammoniacal liquor, obtain mixed liquor, the mixed liquor be transferred in 110~180 DEG C of water heating kettles
Isothermal reaction, question response carry out subsequent treatment after terminating, obtain composite flame-retardant agent.
Preferably, the magnesium salts is the one or more in magnesium chloride, magnesium sulfate, magnesium nitrate, and the CNT is
Functionalized multi-wall carbonnanotubes.
Preferably, the surfactant is neopelex, cetyl benzenesulfonic acid sodium or dodecyl
Sodium sulphate.
Preferably, the plasticizer is dioctyl adipate or di-n-hexyl adipate.
Preferably, the antioxidant be four [3- (3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters, 4,
4 '-thiobis (the 6- tert-butyl group -3- methylphenols), dilauryl thiodipropionate, (2,4- di-tert-butyl-phenyl) phosphorous acid three
Ester or β, β '-vulcanization dipropionic acid distearate.
Preferably, the lubricant be Tissuemat E, N, N '-ethylenebisstearamide, hard magnesium, zinc stearate with
One or more in stearic acid.
It is a further object to provide a kind of preparation method of cable cover(ing) fire proofing, including following step
Suddenly：
1) according to proportioning, 5~10 parts of metallocene PE, 20~30 parts of ethylene-vinyl acetate copolymer, polyethylene are weighed
60~70 parts of resin, 6~12 parts of plasticizer, 10~20 parts of composite flame-retardant agent, 3~6 parts of organic silicone, 1~3 part of antioxidant with
It is and standby after 2~6 parts of mixing of lubricant；
2) mixture of step 1) is put into banbury, when being heated to 115~135 DEG C, lifts floating weight of banbury mixer
Stirring is carried out, after stirring terminates, continues banburying to banburying built-in temperature and reaches 145~155 DEG C, stop heating, be further continued for banburying 2
~5 minutes, then it is made by single screw extrusion machine extruding pelletization.
Beneficial effects of the present invention：
1st, using the composite flame-retardant agent being prepared by magnesium salts, nanometer silicon carbide and CNT, it is reduced the present invention
The particle diameter of magnesium hydroxide, and improve the dispersiveness of nanometer silicon carbide and magnesium hydroxide, reduce magnesium hydroxide and nanometer
Influence of the carborundum to ethylene-vinyl acetate copolymer mechanical mechanics property, while improve fire resistance.
2nd, the intensity of metallocene PE is very high, and cable cover(ing) matrix can be improved using the metallocene PE of high intensity
Intensity.Organic silicone can improve the wearability on cable sheath material surface, that is, reach the relatively low coefficient of friction of material surface.
Embodiment
Embodiment 1
The preparation method of composite flame-retardant agent：
The functionalized multi-wall carbonnanotubes of the nanometer silicon carbide of 6 parts by weight and 2 parts by weight are added to 80 parts by weight
In the ethanol solution of magnesium chloride, the neopelex that 2 parts by weight are added after disperseing is sufficiently stirred, is being divided after ultrasonic disperse
50 parts by weight ammoniacal liquor are added in the suspension dissipated, obtain mixed liquor, it is anti-that the mixed liquor is transferred into constant temperature in 110 DEG C of water heating kettles
Should, question response carries out subsequent treatment after terminating, and obtains composite flame-retardant agent.
Embodiment 2
The preparation method of composite flame-retardant agent：
The functionalized multi-wall carbonnanotubes of the nanometer silicon carbide of 12 parts by weight and 8 parts by weight are added to 90 parts by weight
In the ethanol solution of magnesium sulfate, the cetyl benzenesulfonic acid sodium that 1 parts by weight are added after disperseing is sufficiently stirred, is being divided after ultrasonic disperse
100 parts by weight ammoniacal liquor are added in the suspension dissipated, obtain mixed liquor, the mixed liquor is transferred to constant temperature in 180 DEG C of water heating kettles
Reaction, question response carry out subsequent treatment after terminating, obtain composite flame-retardant agent.
Embodiment 3
A kind of cable cover(ing) fire proofing, according to the number of parts by weight, including following raw material：
8 parts of metallocene PE, 24 parts of ethylene-vinyl acetate copolymer, 63 parts of polyvinyl resin, dioctyl adipate 10
Part, 2 parts of 4 parts of 15 parts of composite flame-retardant agent, organic silicone, the dilauryl thiodipropionate and 4 parts of Tissuemat E of embodiment 1.
Preparation method：
1) according to proportioning, weigh 8 parts of metallocene PE, 24 parts of ethylene-vinyl acetate copolymer, 63 parts of polyvinyl resin,
10 parts of dioctyl adipate, embodiment 12 parts of 4 parts of 15 parts of composite flame-retardant agent, organic silicone, dilauryl thiodipropionate with
It is and standby after 4 parts of mixing of Tissuemat E；
2) mixture of step 1) is put into banbury, when being heated to 115~135 DEG C, lifts floating weight of banbury mixer
Stirring is carried out, after stirring terminates, continues banburying to banburying built-in temperature and reaches 145~155 DEG C, stop heating, be further continued for banburying 2
Minute, then it is made by single screw extrusion machine extruding pelletization.
Embodiment 4
A kind of cable cover(ing) fire proofing, according to the number of parts by weight, including following raw material：
5 parts of metallocene PE, 20 parts of ethylene-vinyl acetate copolymer, 70 parts of polyvinyl resin, di-n-hexyl adipate 6
Part, 6 parts of 10 parts of composite flame-retardant agent, the organic silicone of embodiment 2,1 part of 4,4 '-thiobis (the 6- tert-butyl group -3- methylphenols) with
And N, N ' 2 parts of-ethylenebisstearamide.
Preparation method：
1) according to proportioning, weigh 5 parts of metallocene PE, 20 parts of ethylene-vinyl acetate copolymer, 70 parts of polyvinyl resin,
6 parts of di-n-hexyl adipate, 6 parts of 10 parts of composite flame-retardant agent, the organic silicone of embodiment 2,4,4 '-thiobis (the 6- tert-butyl groups -3-
Methylphenol) 1 part and N, N ' it is standby after the 2 parts of mixing of-ethylenebisstearamide；
2) mixture of step 1) is put into banbury, when being heated to 115~135 DEG C, lifts floating weight of banbury mixer
Stirring is carried out, after stirring terminates, continues banburying to banburying built-in temperature and reaches 145~155 DEG C, stop heating, be further continued for banburying 5
Minute, then it is made by single screw extrusion machine extruding pelletization.
Embodiment 5
10 parts of metallocene PE, 27 parts of ethylene-vinyl acetate copolymer, 60 parts of polyvinyl resin, dioctyl adipate 12
Part, 3 parts of 17 parts of composite flame-retardant agent, the organic silicone of embodiment 1, β, β ' -3 parts of vulcanization dipropionic acid distearate and stearic acid
6 parts of magnesium.
Preparation method：
1) according to proportioning, 10 parts of metallocene PE, 27 parts of ethylene-vinyl acetate copolymer, polyvinyl resin 60 are weighed
Part, 3 parts of 17 parts of composite flame-retardant agent, the organic silicone of 12 parts of dioctyl adipate, embodiment 1, β, β '-vulcanization dipropionic acid distearyl
It is standby after the 6 parts of mixing of 3 parts of acid esters and hard magnesium；
2) mixture of step 1) is put into banbury, when being heated to 115~135 DEG C, lifts floating weight of banbury mixer
Stirring is carried out, after stirring terminates, continues banburying to banburying built-in temperature and reaches 145~155 DEG C, stop heating, be further continued for banburying 4
Minute, then it is made by single screw extrusion machine extruding pelletization.
Embodiment 6
A kind of cable cover(ing) fire proofing, according to the number of parts by weight, including following raw material：
9 parts of metallocene PE, 30 parts of ethylene-vinyl acetate copolymer, 67 parts of polyvinyl resin, dioctyl adipate 8
Part, 4 parts of 12 parts of composite flame-retardant agent, the organic silicone of embodiment 2, four [3- (3,5- di-tert-butyl-hydroxy phenyl) propionic acid] seasons
2 parts of 1 part of Doutrate and zinc stearate.
Preparation method：
1) according to proportioning, weigh 9 parts of metallocene PE, 30 parts of ethylene-vinyl acetate copolymer, 67 parts of polyvinyl resin,
8 parts of dioctyl adipate, 4 parts of 12 parts of composite flame-retardant agent, the organic silicone of embodiment 2, four [3- (3,5- di-t-butyl -4- hydroxyls
Phenyl) propionic acid] it is standby after 1 part of pentaerythritol ester and the mixing of 2 parts of zinc stearate；
2) mixture of step 1) is put into banbury, when being heated to 115~135 DEG C, lifts floating weight of banbury mixer
Stirring is carried out, after stirring terminates, continues banburying to banburying built-in temperature and reaches 145~155 DEG C, stop heating, be further continued for banburying 5
Minute, then it is made by single screw extrusion machine extruding pelletization.
Test example
The cable cover(ing) that embodiment 3-6 is prepared is subjected to mechanical property and the measure of oxidation index with fire proofing,
Tensile strength test stone GB/T1040.3, the test stone of elongation at break are GB/T1040.3,20 DEG C of specific insulations
The test stone of (Ω m) is GB/T1410, and the test stone of oxidation index is GB/T2406, impact brittle temperature GB/
T5470, smoke density GB/T8323, the results are shown in Table 1.
The embodiment 3-6 of table 1 cable cover(ing) fire proofing mechanical property and oxidation index
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (8)
- A kind of 1. cable cover(ing) fire proofing, it is characterised in that according to the number of parts by weight, including following raw material：5~10 parts of metallocene PE, 20~30 parts of ethylene-vinyl acetate copolymer, 60~70 parts of polyvinyl resin, plasticizer 6 2~6 parts of~12 parts, 10~20 parts of composite flame-retardant agent, 3~6 parts of organic silicone, 1~3 part of antioxidant and lubricant, wherein, Composite flame-retardant agent is prepared by magnesium salts, nanometer silicon carbide and CNT.
- 2. cable cover(ing) fire proofing according to claim 1, it is characterised in that the preparation side of the composite flame-retardant agent Method：The CNT of the nanometer silicon carbide of 6~12 parts by weight and 2~8 parts by weight is added to the magnesium salts of 80~90 parts by weight Ethanol solution in, be sufficiently stirred it is scattered after add the surfactants of 1~2 parts by weight, scattered outstanding after ultrasonic disperse 50~100 parts by weight ammoniacal liquor are added in supernatant liquid, mixed liquor is obtained, the mixed liquor is transferred to constant temperature in 110~180 DEG C of water heating kettles Reaction, question response carry out subsequent treatment after terminating, obtain composite flame-retardant agent.
- 3. cable cover(ing) fire proofing according to claim 1 or 2, it is characterised in that the magnesium salts is magnesium chloride, sulphur One or more in sour magnesium, magnesium nitrate, the CNT are functionalized multi-wall carbonnanotubes.
- 4. cable cover(ing) fire proofing according to claim 2, it is characterised in that the surfactant is dodecane Base benzene sulfonic acid sodium salt, cetyl benzenesulfonic acid sodium or lauryl sodium sulfate.
- 5. cable cover(ing) fire proofing according to claim 1, it is characterised in that the plasticizer is that adipic acid two is pungent Ester or di-n-hexyl adipate.
- 6. cable cover(ing) fire proofing according to claim 1, it is characterised in that the antioxidant be four [3- (3, 5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol ester, 4,4 '-thiobis (the 6- tert-butyl group -3- methylphenols), thio two Propionic acid dilauryl, (2,4- di-tert-butyl-phenyl) tris phosphite or β, β '-vulcanization dipropionic acid distearate.
- 7. cable cover(ing) fire proofing according to claim 1, it is characterised in that the lubricant be Tissuemat E, N, N ' one or more in-ethylenebisstearamide, hard magnesium, zinc stearate and stearic acid.
- 8. the preparation method of cable cover(ing) fire proofing as claimed in claim 1, it is characterised in that comprise the following steps：1) according to proportioning, 5~10 parts of metallocene PE, 20~30 parts of ethylene-vinyl acetate copolymer, polyvinyl resin are weighed 60~70 parts, 6~12 parts of plasticizer, 10~20 parts of composite flame-retardant agent, 3~6 parts of organic silicone, 1~3 part of antioxidant and profit It is standby after 2~6 parts of mixing of lubrication prescription；2) mixture of step 1) is put into banbury, when being heated to 115~135 DEG C, lifting floating weight of banbury mixer is carried out Stirring, after stirring terminates, continue banburying to banburying built-in temperature and reach 145~155 DEG C, stop heating, be further continued for banburying 2~5 Minute, then it is made by single screw extrusion machine extruding pelletization.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108359171A (en) * | 2018-03-01 | 2018-08-03 | 江苏中天科技股份有限公司 | A kind of low friction low-smoke non-halogen flame-retardant protecting sleeve of optical cable |
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| CN108359171A (en) * | 2018-03-01 | 2018-08-03 | 江苏中天科技股份有限公司 | A kind of low friction low-smoke non-halogen flame-retardant protecting sleeve of optical cable |
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Application publication date: 20171124 |