CN104194141A - High-filling halogen-free fire-retardant cable material - Google Patents
High-filling halogen-free fire-retardant cable material Download PDFInfo
- Publication number
- CN104194141A CN104194141A CN201410476142.5A CN201410476142A CN104194141A CN 104194141 A CN104194141 A CN 104194141A CN 201410476142 A CN201410476142 A CN 201410476142A CN 104194141 A CN104194141 A CN 104194141A
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- Prior art keywords
- retardant cable
- halogen flame
- retardant
- filling
- vinyl
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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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- 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
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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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The invention discloses a high-filling halogen-free fire-retardant cable material. The high-filling halogen-free fire-retardant cable material comprises an ethylene-vinyl acetate copolymer, low-density polyethylene, an inorganic fire retardant, maleic anhydride grafted ethylene-vinyl acetate and an antioxidant. As the maleic anhydride grafted ethylene-vinyl acetate is added in the halogen-free fire-retardant cable material as an interface compatibilizer, the de-bonding function of an interface flexible layer is enhanced, and the uniform dispersion of the inorganic fire retardant in matrix resin is facilitated. Therefore, the problem that the mechanical properties of the cable material are reduced due to the massive filling of the inorganic fire retardant is solved, and the comprehensive performance of the cable material is improved.
Description
Technical field
The present invention relates to a kind of CABLE MATERIALS, be specifically related to a kind of high non-halogen flame-retardant cable of filling.
Background technology
Electric wire Chang Yin self-heating or outside fire and cause burning in electric energy transmitting.In order to improve the flame retardant resistance of electric wire, the initial fire retardant that contains halogen that adds, this type of electric wire discharges a large amount of smog and hydrogen halide in combustion processes, easily makes people be choked to death in fire, simultaneously larger to plant and instrument corrosion.Therefore, the development and application of low cigarette, low halogen and bittern-free flame-proof material has been the developing direction in domestic and international cable and other field.
At present, the production of halide-free low-smoke fireproof cable material is in polyolefin substrate, to add a large amount of magnesium hydroxides or aluminium hydroxide to reach flame retardant effect mostly, but the adding of a large amount of inorganic materials, affected physical and mechanical properties and the process industrial art performance of CABLE MATERIALS, poor, oil-proofness of softness, weathering resistance, resistance to low temperature are not fine at normal temperatures for they.
Summary of the invention
The object of the invention is to propose the non-halogen flame-retardant cable that a kind of flame retardant properties and mechanical property have concurrently, this CABLE MATERIALS has solved the problem of filling the cable mechanical properties decrease that inorganic materials cause due to a large amount of, has improved the over-all properties of CABLE MATERIALS.
For reaching this object, the present invention by the following technical solutions:
First aspect, the invention provides a kind of high non-halogen flame-retardant cable of filling, the described high non-halogen flame-retardant cable of filling comprises: vinyl-vinyl acetate copolymer, Low Density Polyethylene, inorganic combustion inhibitor, maleic anhydride grafted ethene-vinyl-acetic ester and oxidation inhibitor.
Fire-resistant cable material requires matrix resin to have higher fillable.Many ethylene copolymers are elastic in essence, because its free volume is large, thereby have higher filling capacity, and degree of crystallinity is lower, and filling capacity is higher, but thermotolerance and processibility variation.Therefore, the present invention is vinyl-vinyl acetate copolymer the use of Low Density Polyethylene and snappiness, low-crystallinity, as matrix resin, to obtain all good effects of fillibility, thermotolerance.
Through a large amount of experimental studies, contriver finds: along with the increase of vinyl-vinyl acetate copolymer, the elongation at break of fire-resistant cable material increases gradually, and tensile strength reduces gradually.This may be owing to containing polar group in vinyl-vinyl acetate copolymer, can improve the interfacial adhesion power between inorganic combustion inhibitor and polyolefine, also improved the dispersion of inorganic powder in polymkeric substance, this has just significantly weakened due to the de-glutinous early fracture phenomenon producing with powder aggregate disruption in interface, thereby has obviously improved elongation at break.
As preferably, by weight percentage, described vinyl-vinyl acetate copolymer is 24%～30%, is preferably 26%～30%, more preferably 28% at described high content of filling in non-halogen flame-retardant cable.
Contriver's discovery, along with the increase of Low Density Polyethylene, the oxygen index of fire-resistant cable material changes little, but elongation at break declines.Consider mechanical property and the flame retardant properties of CABLE MATERIALS, as preferably, by weight percentage, described Low Density Polyethylene is 2%～10%, more preferably 4%～8%, is further preferably 8% at described high content of filling in non-halogen flame-retardant cable.
As preferably, described inorganic combustion inhibitor is magnesium hydroxide and/or aluminium hydroxide.
Contriver's discovery, along with the increase of inorganic combustion inhibitor, the tensile strength of fire-resistant cable material and elongation at break are all on a declining curve, and flame retardant properties is in rising trend.Consider mechanical property and the flame retardant properties of CABLE MATERIALS, as preferably, by weight percentage, described inorganic combustion inhibitor is 45%～55%, is preferably 50% at described high content of filling in non-halogen flame-retardant cable.
The present invention is using maleic anhydride grafted ethene-vinyl-acetic ester as compatilizer, the macromolecular chain of compatilizer can tangle mutually with the macromolecular chain of matrix resin, maleic anhydride reacts with inorganic combustion inhibitor and mortise, thereby obviously improve the interface affinity of matrix resin and inorganic combustion inhibitor, inorganic combustion inhibitor has been realized in matrix material dispersed; In the course of processing, along with the increase of maleic anhydride grafted ethene-vinyl-acetic ester, the de-glutinous phenomenon of interface flexible layer clearly, makes the deteriorated situation of composite materials property thereby can improve because filling in a large number inorganic combustion inhibitors.
As preferably, by weight percentage, described maleic anhydride grafted ethene-vinyl-acetic ester is 6%～20%, is preferably 8%～12%, more preferably 10% at described high content of filling in non-halogen flame-retardant cable.
As preferably, described oxidation inhibitor is any one or a few in antioxidant 1010, antioxidant 1076 and irgasfos 168, is preferably antioxidant 1010.
As preferably, by weight percentage, described oxidation inhibitor is 2%～6%, is preferably 4% at described high content of filling in non-halogen flame-retardant cable.
Further preferred, the described high non-halogen flame-retardant cable of filling comprises:
Second aspect, the invention provides height as described in first aspect and fills the complete processing of non-halogen flame-retardant cable, by each raw material blend of described weight part, then by this blend composition by forcing machine mixing granulator, gained mixing granulator is made finished product through injection molding.
The high non-halogen flame-retardant cable of filling of the present invention adds maleic anhydride graft vinyl-acetic ester as interfacial compatibilizer, can strengthen the de-glutinous effect of interface flexible layer, be conducive to inorganic combustion inhibitor dispersed in matrix resin, thereby solve the problem of the CABLE MATERIALS mechanical properties decrease causing due to a large amount of filling inorganic combustion inhibitors, improved the over-all properties of CABLE MATERIALS.
Embodiment
Further illustrate technical scheme of the present invention below in conjunction with specific embodiment.Should be appreciated that enforcement of the present invention is not limited to following examples, those skilled in the art can carry out various improvement based on this, and these also all fall into protection scope of the present invention.
Embodiment 1
By following formula, all raw materials are carried out to blend:
Again this blend composition is passed through to forcing machine mixing granulator, gained mixing granulator process:
(1) compression molding: take 23-30g material grain and be placed in thick framed of 1mm, (180 DEG C of upper and lower mould temperature) preheating 6min on moulding press, with the pressure hot pressing 4min of 5.0MPa, then cold pressing to normal temperature with 10.0MPa, obtain the sample of mechanical property to be measured.
(2) injection molding: 210 DEG C of barrel temperatures, injection pressure 4MPa, shaping cycle 45s, obtains the sample of oxygen index to be measured.
Finally, by mechanical property, the oxygen index of national standard test gained finished product, result is as shown in table 1:
The performance data of table 1, embodiment 1 made CABLE MATERIALS
| Performance | Testing method | Test result |
| Tensile strength/MPa | GB/T1040-1992 | 13.6 |
| Elongation at break/% | GB/T1040-1992 | 128 |
| Oxygen index | GB/T2406-1993 | 36.4 |
Embodiment 2
By following formula, all raw materials are carried out to blend:
Again this blend composition is passed through to forcing machine mixing granulator, gained mixing granulator process:
(1) compression molding: take 23-30g material grain and be placed in thick framed of 1mm, (180 DEG C of upper and lower mould temperature) preheating 6min on moulding press, with the pressure hot pressing 4min of 5.0MPa, then cold pressing to normal temperature with 10.0MPa, obtain the sample of mechanical property to be measured.
(2) injection molding: 210 DEG C of barrel temperatures, injection pressure 4MPa, shaping cycle 45s, obtains the sample of oxygen index to be measured.
Finally, by mechanical property, the oxygen index of national standard test gained finished product, result is as shown in table 2:
The performance data of table 2, embodiment 2 made CABLE MATERIALS
| Performance | Testing method | Test result |
| Tensile strength/MPa | GB/T1040-1992 | 13 |
| Elongation at break/% | GB/T1040-1992 | 132 |
| Oxygen index | GB/T2406-1993 | 36.8 |
Embodiment 3
By following formula, all raw materials are carried out to blend:
Again this blend composition is passed through to forcing machine mixing granulator, gained mixing granulator process:
(1) compression molding: take 23-30g material grain and be placed in thick framed of 1mm, (180 DEG C of upper and lower mould temperature) preheating 6min on moulding press, with the pressure hot pressing 4min of 5.0MPa, then cold pressing to normal temperature with 10.0MPa, obtain the sample of mechanical property to be measured.
(2) injection molding: 210 DEG C of barrel temperatures, injection pressure 4MPa, shaping cycle 45s, obtains the sample of oxygen index to be measured.
Finally, by mechanical property, the oxygen index of national standard test gained finished product, result is as shown in table 3:
The performance data of table 3, embodiment 3 made CABLE MATERIALS
| Performance | Testing method | Test result |
| Tensile strength/MPa | GB/T1040-1992 | 12.8 |
| Elongation at break/% | GB/T1040-1992 | 124 |
| Oxygen index | GB/T2406-1993 | 36.3 |
Applicant statement, the present invention illustrates the present invention by above-described embodiment, but that the present invention is not limited to is above-mentioned, does not mean that the present invention must rely on above-mentioned could enforcement.Person of ordinary skill in the field should understand, any improvement in the present invention, and the selections of the equivalence replacement to the selected raw material of the present invention and the interpolation of ancillary component, concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (10)
1. a high filling non-halogen flame-retardant cable, is characterized in that, comprises vinyl-vinyl acetate copolymer, Low Density Polyethylene, inorganic combustion inhibitor, maleic anhydride grafted ethene-vinyl-acetic ester and oxidation inhibitor.
2. the high non-halogen flame-retardant cable of filling according to claim 1, is characterized in that, described inorganic combustion inhibitor is magnesium hydroxide and/or aluminium hydroxide.
3. the high non-halogen flame-retardant cable of filling according to claim 1 and 2, is characterized in that, described oxidation inhibitor is any one or a few in antioxidant 1010, antioxidant 1076 and irgasfos 168.
4. fill non-halogen flame-retardant cable according to the height described in claim 1-3 any one, it is characterized in that, by weight percentage, the content of described vinyl-vinyl acetate copolymer in described non-halogen flame-retardant cable is 24%～30%, is preferably 26%～30%, more preferably 28%.
5. fill non-halogen flame-retardant cable according to the height described in claim 1-4 any one, it is characterized in that, by weight percentage, the content of described Low Density Polyethylene in described non-halogen flame-retardant cable is 2%～10%, is preferably 4%～8%, more preferably 8%.
6. fill non-halogen flame-retardant cable according to the height described in claim 1-5 any one, it is characterized in that, by weight percentage, the content of described inorganic combustion inhibitor in described non-halogen flame-retardant cable is 45%～55%, is preferably 50%.
7. fill non-halogen flame-retardant cable according to the height described in claim 1-6 any one, it is characterized in that, by weight percentage, the content of described maleic anhydride grafted ethene-vinyl-acetic ester in described non-halogen flame-retardant cable is 6%～20%, is preferably 8%～12%, more preferably 10%.
8. fill non-halogen flame-retardant cable according to the height described in claim 1-7 any one, it is characterized in that, by weight percentage, the content of described oxidation inhibitor in described non-halogen flame-retardant cable is 2%～6%, is preferably 4%.
9. fill non-halogen flame-retardant cable according to the height described in claim 1-8 any one, it is characterized in that, comprising:
10. the height as described in claim 1-9 any one is filled the complete processing of non-halogen flame-retardant cable, it is characterized in that, by each raw material blend of described weight part, then this blend composition is passed through to forcing machine mixing granulator, and gained mixing granulator is made finished product through injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476142.5A CN104194141A (en) | 2014-09-17 | 2014-09-17 | High-filling halogen-free fire-retardant cable material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476142.5A CN104194141A (en) | 2014-09-17 | 2014-09-17 | High-filling halogen-free fire-retardant cable material |
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| Publication Number | Publication Date |
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| CN104194141A true CN104194141A (en) | 2014-12-10 |
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| CN201410476142.5A Pending CN104194141A (en) | 2014-09-17 | 2014-09-17 | High-filling halogen-free fire-retardant cable material |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410496A (en) * | 2001-10-10 | 2003-04-16 | 华新丽华股份有限公司 | Environmental protection cable wire coating composition |
| CN1581369A (en) * | 2003-08-15 | 2005-02-16 | 北京化工大学 | Halogen-free non-phosphorus flame-retarded cable sheath material |
| CN102324274A (en) * | 2011-07-20 | 2012-01-18 | 广东中德电缆有限公司 | Strong-overload super-flexible crosslinked environment-friendly cable |
| CN103571031A (en) * | 2013-09-30 | 2014-02-12 | 芜湖航天特种电缆厂 | Low-smoke environmental-friendly cable material |
-
2014
- 2014-09-17 CN CN201410476142.5A patent/CN104194141A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410496A (en) * | 2001-10-10 | 2003-04-16 | 华新丽华股份有限公司 | Environmental protection cable wire coating composition |
| CN1581369A (en) * | 2003-08-15 | 2005-02-16 | 北京化工大学 | Halogen-free non-phosphorus flame-retarded cable sheath material |
| CN102324274A (en) * | 2011-07-20 | 2012-01-18 | 广东中德电缆有限公司 | Strong-overload super-flexible crosslinked environment-friendly cable |
| CN103571031A (en) * | 2013-09-30 | 2014-02-12 | 芜湖航天特种电缆厂 | Low-smoke environmental-friendly cable material |
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