CN105419073A - Low-smoke zero-halogen flame-retardant electric wire and cable sheathing material and preparation method therefor - Google Patents
Low-smoke zero-halogen flame-retardant electric wire and cable sheathing material and preparation method therefor Download PDFInfo
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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
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7461—Combinations of dissimilar mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- C08L31/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
- C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C08L31/04—Homopolymers or copolymers of vinyl acetate
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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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- 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
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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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
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- 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
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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Abstract
The invention belongs to the technical field of high polymer materials, and discloses a low-smoke zero-halogen flame-retardant electric wire and cable sheathing material and a preparation method therefor. The sheathing material is prepared from the following raw materials in parts by weight: 100 parts of an ethylene-vinyl acetate copolymer, 30-100 parts of an intumescent flame retardant, 0.1-5 parts of a coupling agent, 0.1-10 parts of a cross-linking agent, 1-20 parts of a plasticizer, 1-20 parts of a lubricant and 0.1-1 part of an antioxidant. The sheathing material is prepared through two-step blending, and small and uniform grain diameters of cross-linking particles of the ethylene-vinyl acetate copolymer are guaranteed, so that a thermoplastic vulcanized elastomer material with a good comprehensive performance, namely the sheathing material, is obtained; and the sheathing material disclosed by the invention is the thermoplastic vulcanized elastomer material, which can be recovered and repeatedly used and is safe and environment-friendly.
Description
Technical field
The invention belongs to technical field of polymer materials, relate to a kind of thermoplastic vulcanizates elastomerics, particularly a kind of low-smoke halogen-free flame-retardant type electric wires sheath material and preparation method thereof.
Background technology
Traditional electric wire and cable material many employings PVC and halogen containing flame-retardant are made, but Halogen fire retardant material can produce a large amount of noxious acidic gas and smoke density is high when burning, and causes serious harm to human-body safety problem.In recent years in order to address these problems, people's many employings polyolefine is matrix, with inorganic metal oxyhydroxide for flame resistant filler system prepares low-smoke halogen-free flame-retardant type electric wires material by blended method, but the flame retarding efficiency of inorganic metal oxyhydroxide is low, the loading level reaching the flame retardant effect of expection is very high, the surface compatability of mineral filler and matrix is poor on the other hand, so just limit the range of application of electric wire largely, especially those require the good flame retardation effect of cable, mechanical strength is high, hardness is low, elongation at break is high, the occasion that splitting resistance is good.
Chinese invention patent application CN101942141A discloses a kind of with processing aid production low-smoke halogen-free flame retardant CABLE MATERIALS such as PE, EVA, aluminium hydroxide, red phosphorus, compatilizer, linking agent, silicone oil and preparation method thereof, resulting product physical strength reaches 7.5MPa, elongation reaches 150%, flame retardant rating reaches V-0 level, and hardness reaches 80A-95A.But this patent adopts red phosphorus and aluminium hydroxide as fire retardant, and because the decomposition temperature of aluminium hydroxide is low, red phosphorus is inflammable, dust explosive, can release irritant gas in combustion, can not meet the requirements such as the LSZH environmental protection of wire cable material, thus application is restricted.On the other hand, this patent takes directly dynamic vulcanization in Banbury mixer, is difficult to the homogeneity ensureing crosslinked particle particle diameter in sulfidation, thus affects the over-all properties of goods.
Summary of the invention
In order to overcome the shortcoming and defect of prior art, the object of the present invention is to provide a kind of low-smoke halogen-free flame-retardant type electric wires sheath material, described electric wire jacking is thermoplastic vulcanizates elastomer material.
Another object of the present invention is to the preparation method that above-mentioned low-smoke halogen-free flame-retardant type electric wires sheath material is provided.
Technical scheme of the present invention realizes by the following technical solutions:
A kind of low-smoke halogen-free flame-retardant type electric wires sheath material is prepared from by following raw material by weight:
The VA content of described ethylene-vinyl acetate copolymer is 30-60%.
Described expansion type flame retardant is ST-EPFR-100D.
Described coupling agent is silane coupling agent, and described silane coupling agent is more than one in KH550, KH560 or KH570.
Described softening agent is polarity plasticizer, and described polarity plasticizer is more than one in dioctyl phthalate (DOP), the positive dibutylester of phthalic acid, diisobutyl phthalate, dicyclohexyl phthalate or phthalic acid two (2-ethyl hexyl) ester.
Described linking agent is dual-tert-butyl dicumyl peroxide, 2,5-dimethyl-2, two (tert-butyl peroxy base) hexane of 5-, dicumyl peroxide, benzoyl peroxide, peroxidized t-butyl perbenzoate, iso-cyanuric acid triallyl ester and N, N ' more than one an of-penylene bismaleimides.
Described lubricant is more than one in stearic acid, Metallic stearates, silicone master batch, silicone oil or polyethylene wax; Described Metallic stearates be in Zinic stearas or calcium stearate more than one.
Described oxidation inhibitor is antioxidant 1010, oxidation inhibitor 198, more than one in irgasfos 168 and oxidation inhibitor B215.
The preparation method of described low-smoke halogen-free flame-retardant type electric wires sheath material, specifically comprises the following steps:
(1) ethylene-vinyl acetate copolymer, expansion type flame retardant, coupling agent, linking agent, softening agent, lubricant and oxidation inhibitor are placed in high-speed mixer to mix, obtain compound; Described mixing time is 4-8 minute;
(2) compound of step (1) is placed in Banbury mixer mixing, obtains mixing materials; Described mixing condition is in 100-160 DEG C of mixing 5-10 minute;
(3) mixing materials of step (2) is placed in forcing machine extruding pelletization, obtains pellet; The temperature of described extruding pelletization is 100-160 DEG C, and described forcing machine is single screw extrusion machine, and the rotating speed of described single screw extrusion machine is 50-300r/min;
(4) pellet of step (3) is added in twin screw extruder carry out extruding pelletization, obtain low-smoke halogen-free flame-retardant type electric wires sheath material; The temperature of described twin screw extruder is 160-200 DEG C, and the rotating speed of described twin screw extruder is 50-300r/min.
Compared with the technology of preparing of existing low-smoke halogen-free flame-retardant thermoplastic elastomer, the present invention has following advantage:
(1) production technique is simple, and cost is low;
(2) the present invention adopts two steps blended, and expansion type flame retardant and linking agent can fully be disperseed in EVA matrix; Raw material carries out dynamic vulcanization in twin screw extruder, ensure that the particle diameter fine uniform of ethylene-vinyl acetate copolymer crosslinked particle, thus obtains the thermoplastic vulcanizates elastomer material that over-all properties is good;
(3) electric wire and cable jacket material properties of the present invention is excellent, specific as follows: hardness is 80 ~ 90 (shore A), tensile strength > 9MPa, elongation at break > 150%, flame retardant rating is V-0, oxygen index > 30, smoke density < 60%;
(4) electric wire and cable jacket material of the present invention is thermoplastic vulcanizates elastomer material, recyclable, reusable, safety, environmental protection.
Embodiment
Below in conjunction with embodiment, enforcement of the present invention is described further and is described, but embodiments of the present invention are not limited to this.
Embodiment 1
Take ethylene-vinyl acetate copolymer (VA content 28%) 100 weight parts, expansion type flame retardant 70 weight part, KH5704 weight part, dioctyl phthalate (DOP) 10 weight part, Zinic stearas 5 weight part, silicone master batch 5 weight part, dual-tert-butyl dicumyl peroxide 2 weight part, iso-cyanuric acid triallyl ester 1 weight part, antioxidant 1010 1 weight part.Above-mentioned raw materials is put in high-speed mixer, mix 8 minutes, obtain the powder mixed; Put in Banbury mixer by powder again, 150 DEG C of banburyings 10 minutes, obtain dough compound; Dough compound being put into rotating speed is extruding pelletization in the single screw extrusion machine of 100r/min, and one section, two sections, three sections temperature of single screw extrusion machine are set as 160 DEG C, 160 DEG C, 160 DEG C respectively; Pellet being put into rotating speed is extruding pelletization in 150r/min twin screw extruder, one ~ six section of temperature of twin screw extruder is respectively 180 DEG C, 190 DEG C, 200 DEG C, 200 DEG C, 200 DEG C, 200 DEG C, can obtain low-smoke halogen-free flame retardant thermoplastic vulcanizates elastomer material (i.e. low-smoke halogen-free flame-retardant type electric wires sheath).
Performance test: hardness is 87 (shore A), and tensile strength is 9.5MPa, elongation at break 200%, and flame retardant rating is V-0, and oxygen index is 31, and smoke density is 50%.
Embodiment 2
Take ethylene-vinyl acetate copolymer (VA content 18%) 100 weight parts, expansion type flame retardant 60 weight part, KH5702 weight part, diisobutyl phthalate 5 weight part, Zinic stearas 3 weight part, silicone master batch 3 weight part, dicumyl peroxide 4 weight part, N, N '-penylene bismaleimides 2 weight part, antioxidant 1010 1 weight part.Above-mentioned raw materials is put in high-speed mixer, mix 8 minutes, obtain the powder mixed; Put in Banbury mixer by powder again, 160 DEG C of banburyings 10 minutes, obtain dough compound; Dough compound being put into rotating speed is extruding pelletization in the single screw extrusion machine of 100r/min, and one section, two sections, three sections temperature of single screw extrusion machine are set as 160 DEG C, 160 DEG C, 160 DEG C respectively.Pellet being put into rotating speed is in 180r/min twin screw extruder, extruding pelletization, one ~ six section of temperature of twin screw extruder is respectively 180 DEG C, 190 DEG C, 200 DEG C, 200 DEG C, 200 DEG C, 200 DEG C, can obtain low-smoke halogen-free flame retardant thermoplastic vulcanizates elastomer material (i.e. low-smoke halogen-free flame-retardant type electric wires sheath).
Performance test: hardness is 90 (shore A), and tensile strength is 9.8MPa, elongation 350%, and flame retardant rating is V-0, and oxygen index is 32, smoke density 55%.
Embodiment 3
Take ethylene-vinyl acetate copolymer (VA content 50%) 100 weight parts, expansion type flame retardant 50 weight part, KH5503 weight part, dioctyl phthalate (DOP) 5 weight part, Zinic stearas 5 weight part, silicone master batch 5 weight part, 2,5-dimethyl-2,5-two (tert-butyl peroxy base) hexane 3 weight part, iso-cyanuric acid triallyl ester 2 weight part, oxidation inhibitor B2151 weight part; Above-mentioned raw materials is put in high-speed mixer, mix 8 minutes, obtain the powder mixed; Put in Banbury mixer by powder again, 150 DEG C of banburyings 10 minutes, obtain dough compound; Dough compound being put into rotating speed is extruding pelletization in the single screw extrusion machine of 100r/min, and one section, two sections, three sections temperature of single screw extrusion machine are set as 160 DEG C, 160 DEG C, 160 DEG C respectively; Pellet being put into rotating speed is extruding pelletization in 150r/min twin screw extruder, one ~ six section of temperature of twin screw extruder is respectively 180 DEG C, 190 DEG C, 200 DEG C, 200 DEG C, 200 DEG C, 200 DEG C, obtains low-smoke halogen-free flame retardant thermoplastic vulcanizates elastomer material (i.e. low-smoke halogen-free flame-retardant type electric wires sheath).
Performance test: hardness is 83 (shore A), and tensile strength is 9MPa, elongation 530%, and flame retardant rating is V-0, and oxygen index is 30, smoke density 56%.
Embodiment 4
Take ethylene-vinyl acetate copolymer (VA content 28%) 100 weight parts, expansion type flame retardant 70 weight part, KH5703 weight part, phthalic acid two (2-ethyl hexyl) ester 15 weight part, Zinic stearas 5 weight part, silicone master batch 10 weight part, 2,5-dimethyl-2, two (tert-butyl peroxy base) hexane 3 weight part of 5-, N, N '-penylene bismaleimides 2 weight part, oxidation inhibitor B2151 weight part; Above-mentioned raw materials is put in high-speed mixer, mix 8 minutes, obtain the powder mixed; In the Banbury mixer put into by powder again, 160 DEG C of banburyings 10 minutes, obtain dough compound; Dough compound being put into rotating speed is extruding pelletization in the single screw extrusion machine of 80r/min, and one section, two sections, three sections temperature of single screw extrusion machine are set as 160 DEG C, 160 DEG C, 160 DEG C respectively; Pellet being put into rotating speed is extruding pelletization in the twin screw extruder of 200r/min, one ~ six section of temperature of twin screw extruder is respectively 180 DEG C, 190 DEG C, 200 DEG C, 200 DEG C, 200 DEG C, 200 DEG C, obtains low-smoke halogen-free flame retardant thermoplastic vulcanizates elastomer material (i.e. low-smoke halogen-free flame-retardant type electric wires sheath).
Performance test: hardness is 88 (shore A), and tensile strength is 9MPa, elongation 250%, and flame retardant rating is V-0, and oxygen index is 30, smoke density 45%.
Claims (10)
1. a low-smoke halogen-free flame-retardant type electric wires sheath material, is characterized in that: be prepared from by following raw material by weight:
2. low-smoke halogen-free flame-retardant type electric wires sheath material according to claim 1, is characterized in that: the VA content of described ethylene-vinyl acetate copolymer is 30-60%;
Described expansion type flame retardant is ST-EPFR-100D.
3. low-smoke halogen-free flame-retardant type electric wires sheath material according to claim 1, is characterized in that: described coupling agent is silane coupling agent; Described softening agent is polarity plasticizer.
4. low-smoke halogen-free flame-retardant type electric wires sheath material according to claim 3, is characterized in that: described silane coupling agent is more than one in KH550, KH560 or KH570;
Described polarity plasticizer is more than one in dioctyl phthalate (DOP), the positive dibutylester of phthalic acid, diisobutyl phthalate, dicyclohexyl phthalate or phthalic acid two (2-ethyl hexyl) ester.
5. low-smoke halogen-free flame-retardant type electric wires sheath material according to claim 1, it is characterized in that: described linking agent is dual-tert-butyl dicumyl peroxide, 2,5-dimethyl-2, two (tert-butyl peroxy base) hexane of 5-, dicumyl peroxide, benzoyl peroxide, peroxidized t-butyl perbenzoate, iso-cyanuric acid triallyl ester and N, N ' more than one an of-penylene bismaleimides.
6. low-smoke halogen-free flame-retardant type electric wires sheath material according to claim 1, is characterized in that: described lubricant is more than one in stearic acid, Metallic stearates, silicone master batch, silicone oil or polyethylene wax.
7. low-smoke halogen-free flame-retardant type electric wires sheath material according to claim 6, is characterized in that: described Metallic stearates be in Zinic stearas or calcium stearate more than one.
8. low-smoke halogen-free flame-retardant type electric wires sheath material according to claim 1, is characterized in that: described oxidation inhibitor is more than one in antioxidant 1010, oxidation inhibitor 198, irgasfos 168 or oxidation inhibitor B215.
9. the preparation method of low-smoke halogen-free flame-retardant type electric wires sheath material according to any one of claim 1 ~ 8, is characterized in that: specifically comprise the following steps:
(1) ethylene-vinyl acetate copolymer, expansion type flame retardant, coupling agent, linking agent, softening agent, lubricant and oxidation inhibitor are placed in high-speed mixer to mix, obtain compound;
(2) compound of step (1) is placed in Banbury mixer mixing, obtains mixing materials;
(3) mixing materials of step (2) is placed in forcing machine extruding pelletization, obtains pellet;
(4) pellet of step (3) is added in twin screw extruder carry out extruding pelletization, obtain low-smoke halogen-free flame-retardant type electric wires sheath material.
10. the preparation method of low-smoke halogen-free flame-retardant type electric wires sheath material according to claim 9, it is characterized in that: the temperature of step (3) described extruding pelletization is 100-160 DEG C, described forcing machine is single screw extrusion machine, and the rotating speed of described single screw extrusion machine is 50-300r/min;
The temperature of step (4) described twin screw extruder is 160-200 DEG C, and the rotating speed of described twin screw extruder is 50-300r/min;
Step (1) described mixing time is 4-8 minute; The described mixing condition of step (2) is in 100-160 DEG C of mixing 5-10 minute.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105924878A (en) * | 2016-06-03 | 2016-09-07 | 安徽恒晶电缆集团有限公司 | Low-smoke, high-performance and flame-retardant cable protection sleeve and preparation method thereof |
| CN107090122A (en) * | 2017-06-22 | 2017-08-25 | 合肥市闵葵电力工程有限公司 | A kind of high-strength anti-flaming cable and preparation method |
| CN107644714A (en) * | 2017-10-23 | 2018-01-30 | 宝鸡长达电气科技有限公司 | The manufacture method and its detection method of a kind of electric wire |
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| CN101486814A (en) * | 2008-01-17 | 2009-07-22 | 立讯精密工业（深圳）有限公司 | Method for producing low-smoke halogen-free non-nitrogen flame-retardant heat-shrinkable material sheathed tube and casing tube |
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2015
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| CN1335334A (en) * | 2000-07-22 | 2002-02-13 | 中国科学技术大学 | Prepn of fireproofing cable material without halide |
| CN1588561A (en) * | 2004-08-17 | 2005-03-02 | 上海上缆辐照技术开发有限公司 | Environmental protection cable wire |
| CN101486814A (en) * | 2008-01-17 | 2009-07-22 | 立讯精密工业（深圳）有限公司 | Method for producing low-smoke halogen-free non-nitrogen flame-retardant heat-shrinkable material sheathed tube and casing tube |
| CN101481475A (en) * | 2008-07-17 | 2009-07-15 | 黑龙江沃尔德电缆有限公司 | Ultraviolet crosslinked expansion type flame-retardant polyolefin cable insulation sheath material and preparation thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105924878A (en) * | 2016-06-03 | 2016-09-07 | 安徽恒晶电缆集团有限公司 | Low-smoke, high-performance and flame-retardant cable protection sleeve and preparation method thereof |
| CN107090122A (en) * | 2017-06-22 | 2017-08-25 | 合肥市闵葵电力工程有限公司 | A kind of high-strength anti-flaming cable and preparation method |
| CN107644714A (en) * | 2017-10-23 | 2018-01-30 | 宝鸡长达电气科技有限公司 | The manufacture method and its detection method of a kind of electric wire |
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Application publication date: 20160323 |