Summary of the invention
It is 150 ℃ of irradiated crosslinking low-smoke and halogen-free flame retardant CABLE MATERIALS that the first object of the present invention is to obtain a kind of temperature resistant grade, and temperature resistant grade is good, and flame retardant effect is outstanding, is applied on electric wire and can tests by single vertical combustion; And maintenance excellent mechanical performances.
The second object of the present invention is to obtain the preparation method that a kind of temperature resistant grade is 150 ℃ of irradiated crosslinking low-smoke and halogen-free flame retardant CABLE MATERIALS, and temperature resistant grade is good, and flame retardant effect is outstanding, is applied on electric wire and can tests by single vertical combustion; And maintenance excellent mechanical performances.
In a first aspect of the present invention, it is the irradiated crosslinking low-smoke and halogen-free CABLE MATERIALS of 150 ℃ that a kind of temperature resistant grade is provided, and its each component is calculated and comprised with parts by weight:
Base resin, wherein said base resin is selected from the mixture of ethylene-vinyl acetate (EVA), the super density polyethylene of line style (VLDPE) and polystyrene-poly divinyl-polystyrene triblock copolymer (SEBS), and it comprises:
60~80 parts of EVA;
5~30 parts of SEBS;
5~30 parts of VLDPE;
Fire retardant, wherein said fire retardant comprises:
In a specific embodiment of the present invention, wherein, its each component is calculated and is comprised of following component with parts by weight:
Base resin, wherein said base resin is selected from the mixture of ethylene-vinyl acetate (EVA), the super density polyethylene of line style (VLDPE) and polystyrene-poly divinyl-polystyrene triblock copolymer (SEBS), and it comprises:
60~80 parts of EVA;
5~30 parts of SEBS;
5~30 parts of VLDPE;
Fire retardant, wherein said fire retardant comprises:
In a specific embodiment of the present invention, the VA content of ethylene-vinyl acetate (EVA) is 28~40%, and melt index is 0.5~3g/10min;
The melting index of the super density polyethylene of line style (VLDPE) is: 0.5~5g/10min;
Polystyrene-poly divinyl-polystyrene triblock copolymer (SEBS) butadiene content is 60-75%, is linear copolymer.
In a specific embodiment of the present invention, selected compatilizer is: ethylene-vinyl acetate grafted maleic anhydride multipolymer (EVA-g-MAH) or ethene grafted maleic anhydride multipolymer (PE-g-MAH).
In a specific embodiment of the present invention, wherein, described lubricant is calcium stearate, Zinic stearas, Magnesium Stearate, polyethylene wax or its combination.
In a specific embodiment of the present invention, wherein, described oxidation inhibitor is selected from: 2,6-di-t-butyl is to ethyl phenol (oxidation inhibitor DBEP), four [3-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010), Tyox B (DLTP) or its combination.
In a specific embodiment of the present invention, wherein, oxidation inhibitor respectively forms components by weight percent and consists of:
2,6-di-t-butyl is to 0.5~2.5 part of ethyl phenol;
0.5~1.5 part of antioxidant 1010;
1~1.5 part of Tyox B.
In a specific embodiment of the present invention, wherein, described coupling agent is: vinyl three ('beta '-methoxy oxyethyl group) silane (A-172).
In a specific embodiment of the present invention, wherein, described crosslinking sensitizer is in triallyl isocyanurate (TAIC) or trihydroxy methyl propane trimethyl acrylate.
It is the preparation method of the irradiated crosslinking low-smoke and halogen-free CABLE MATERIALS of 150 ℃ that a second aspect of the present invention provides a kind of temperature resistant grade as described in the present invention, comprises following processing step:
The each component of CABLE MATERIALS is as described in the present invention provided;
Fire retardant is proportionally mixed to temperature to 110 ± 5 ℃, stirs discharging in 3~6 minutes after adding lubricant;
Each component is added to Banbury mixer successively, banburying mixing discharging;
Adopt dual-screw pelletizer extruding pelletization, obtain temperature resistant grade and be the irradiated crosslinking low-smoke and halogen-free CABLE MATERIALS of 150 ℃.
In a specific embodiment of the present invention, four temperature sections in extruding pelletization process are: feeding section 100-115 ℃, transportation section 100-115 ℃, melt zone 120-130 ℃, head 125-135 ℃.
In a specific embodiment of the present invention,
Component of the present invention is provided;
Fire retardant is proportionally blended in high-speed mixer high speed and is mixed to temperature to 110 ℃, stirs discharging in 3~6 minutes after adding Zinic stearas;
Fire retardant, anti-aging agent, resin, compatilizer, lubricant, crosslinking sensitizer, the coupling agent handled well add Banbury mixer successively.At Banbury mixer, to material plasticizing, powder and resin combine together and get final product discharging; Dual-screw pelletizer (production of Rhea polymkeric substance Equipment Limited, Nanjing) extruding pelletization.
Embodiment
The inventor, through extensive and deep research, by improving preparation technology, has obtained flame retardant resistance and mechanical property good, and resistant to elevated temperatures low-smoke halogen-free flame-retardant sheath material and preparation method thereof.Completed on this basis the present invention.
Technical conceive of the present invention is as follows:
Fireproofing cable material without halide is in order to meet fire-retardant and requirement Halogen, and it is base material that the design of general formula adopts polyolefine, adds a large amount of inorganic combustion inhibitors to fill to obtain fire-retardant framework.But it is fire-retardant still more difficult with contradiction mechanical property to take such method relatively will solve.The present invention adopts novel flame-retarded technology, has reduced the usage quantity of fire retardant, simultaneously on material impact less.And the easy hardening of material after a large amount of interpolation mineral fillers, feel is bad, and material of the present invention has good springiness, and feel is outstanding, easily the feature of processing.
In the present invention, term " contains " or " comprising " represents that various compositions can be applied in mixture of the present invention or composition together.Therefore, term " mainly by ... composition " and " by ... form " be included in that term " contains " or in " comprising ".
Below describe in detail to various aspects of the present invention:
Temperature resistant grade is the irradiated crosslinking low-smoke and halogen-free CABLE MATERIALS of 150 ℃
In a first aspect of the present invention, it is the irradiated crosslinking low-smoke and halogen-free CABLE MATERIALS of 150 ℃ that a kind of temperature resistant grade is provided, and its each component is calculated and comprised with parts by weight:
Base resin, wherein said base resin is selected from the mixture of ethylene-vinyl acetate (EVA), the super density polyethylene of line style (VLDPE) and polystyrene-poly divinyl-polystyrene triblock copolymer (SEBS), and it comprises:
60~80 parts of EVA;
5~30 parts of SEBS;
5~30 parts of VLDPE;
Fire retardant, wherein said fire retardant comprises:
In the present invention, selected ethylene-vinyl acetate (EVA) has the feature of high VA content, and processing temperature is low, can reduce the thermolysis producing in the course of processing.Itself and mineral filler, the consistency of oxidation inhibitor is excellent, has greatly improved the stability of material.The super density polyethylene of line style (VLDPE) has high tensile strength, fabulous snappiness, anti-chemical and radiation resistance.Polystyrene-poly divinyl-polystyrene triblock copolymer (SEBS) butadiene content is 60-75%, is linear copolymer, has good resistance toheat, weather resistance, processability; Tensile strength of material, elongation at break is outstanding.Ethylene-vinyl acetate (EVA) stable chemical performance, radiation hardness, the feature that ageing resistance is outstanding.But independent component also cannot solve a difficult problem (being also fire-retardant and contradiction mechanical property) for prior art.
Described fire retardant is selected from: the combination of magnesium hydroxide, boric acid trimeric cyanamide, antimonous oxide.Boric acid trimeric cyanamide heat decomposition temperature is greater than 300 degree, and thermal endothermic decomposition is trimeric cyanamide and cyanuric acid, dilution oxygen and inflammable gas, its with antimonous oxide share can increase material become carbon and self-extinguishing energy, greatly improve flame retardant properties, during burning without water clock.Magnesium hydroxide and aluminium hydroxide are highly effective inorganic flame-proof agent, and decomposes Cheng Shui and metal oxide, take away heat output, play fire-retardant effect.
And the contradiction having solved well between flame retardant properties and mechanical property that coordinates of above-mentioned base resin and fire retardant.
It is 150 ℃ that product of the present invention can meet the warm grade of use, and has splendid flame retardant properties and processing characteristics, can meet many environment special occasions and use.
More specifically show:
1, the mixture of ethylene-vinyl acetate (EVA), the super density polyethylene of line style (VLDPE) and polystyrene-poly divinyl-polystyrene triblock copolymer (SEBS), has good heat impedance.And Drawing abillity excellence.
2, the present invention adopts novel flame-retarded technology, can test by single vertical combustion with the electric wire of this material manufacture.
3, cross-linking radiation sheath material of the present invention is to be realized and being cross-linked by rumbatron, and production technique is simple, and energy consumption is low.
4, resulting materials good springiness of the present invention.
In a specific embodiment of the present invention, wherein, its each component is calculated and is comprised of following component with parts by weight:
Base resin, wherein said base resin is selected from the mixture of ethylene-vinyl acetate (EVA), the super density polyethylene of line style (VLDPE) and polystyrene-poly divinyl-polystyrene triblock copolymer (SEBS), and it comprises:
60~80 parts of EVA;
5~30 parts of SEBS;
5~30 parts of VLDPE;
Fire retardant, wherein said fire retardant comprises:
In a specific embodiment of the present invention, the VA content of ethylene-vinyl acetate (EVA) is 28~40%, and melt index is 0.5~3g/10min;
The melting index of the super density polyethylene of line style (VLDPE) is: 0.5~5g/10min;
Polystyrene-poly divinyl-polystyrene triblock copolymer (SEBS) butadiene content is 60-75%, is linear copolymer.
In a specific embodiment of the present invention, selected compatilizer is: ethylene-vinyl acetate grafted maleic anhydride multipolymer (EVA-g-MAH) or ethene grafted maleic anhydride multipolymer (PE-g-MAH).Described compatilizer can improve the dispersiveness of inorganic combustion inhibitor in resin, improves the stability of material, and improves the mechanical property of material.
In a specific embodiment of the present invention, wherein, described lubricant is calcium stearate, Zinic stearas, Magnesium Stearate, polyethylene wax or its combination.
In a specific embodiment of the present invention, wherein, described oxidation inhibitor is selected from: 2,6-di-t-butyl is to ethyl phenol (oxidation inhibitor DBEP), four [3-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010), Tyox B (DLTP) or its combination.
In a specific embodiment of the present invention, wherein, oxidation inhibitor respectively forms components by weight percent and consists of:
2,6-di-t-butyl is to 0.5~2.5 part of ethyl phenol;
0.5~1.5 part of antioxidant 1010;
1~1.5 part of Tyox B.
Above-mentioned preferred antioxidant system can make the component entirety activation energy of cable jacket material very low, has good heat impedance.Described 2,6-di-t-butyl has remarkable thermostability and long-acting thermal ageing resistant performance to ethyl phenol (oxidation inhibitor DBEP), merges and uses the long-term heat aging property that can effectively improve material with hindered phenol antioxygen 1010.
In a specific embodiment of the present invention, wherein, described coupling agent is: vinyl three ('beta '-methoxy oxyethyl group) silane (A-172).Preferred vinyl three ('beta '-methoxy oxyethyl group) silane (A-172) is the production of De Gusai company.
Described coupling agent is vinyl three ('beta '-methoxy oxyethyl group) silane (A-172).Described coupling agent A-172 can improve the coupling between inorganic surfaces resin.Electric property and the physical strength of improving mineral-filled elastomer, particularly under hygrometric state, its performance is more remarkable.
In a specific embodiment of the present invention, wherein, described crosslinking sensitizer is in triallyl isocyanurate (TAIC) or trihydroxy methyl propane trimethyl acrylate.
Preferred, described crosslinking sensitizer is the TAIC crosslinking sensitizer of Liuyang municipal moral material Science and Technology Ltd..
Preparation method
It is the preparation method of the irradiated crosslinking low-smoke and halogen-free CABLE MATERIALS of 150 ℃ that a second aspect of the present invention provides a kind of temperature resistant grade as described in the present invention, comprises following processing step:
The each component of CABLE MATERIALS is as described in the present invention provided;
Fire retardant is proportionally mixed to temperature to 110 ± 5 ℃, stirs discharging in 3~6 minutes after adding lubricant;
Each component is added to Banbury mixer successively, banburying mixing discharging;
Adopt dual-screw pelletizer extruding pelletization, obtain temperature resistant grade and be the irradiated crosslinking low-smoke and halogen-free CABLE MATERIALS of 150 ℃.
In a specific embodiment of the present invention, four temperature sections in extruding pelletization process are: feeding section 100-115 ℃, transportation section 100-115 ℃, melt zone 120-130 ℃, head 125-135 ℃.
In a specific embodiment of the present invention,
Component of the present invention is provided;
Fire retardant is proportionally blended in high-speed mixer high speed and is mixed to temperature to 110 ℃, stirs discharging in 3~6 minutes after adding Zinic stearas;
Fire retardant, anti-aging agent, resin, compatilizer, lubricant, crosslinking sensitizer, the coupling agent handled well add Banbury mixer successively.At Banbury mixer, to material plasticizing, powder and resin combine together and get final product discharging; Dual-screw pelletizer (production of Rhea polymkeric substance Equipment Limited, Nanjing) extruding pelletization.
As no specific instructions, various raw material of the present invention all can obtain by commercially available; Or prepare according to the ordinary method of this area.Unless otherwise defined or described herein, the familiar same meaning of all specialties used herein and scientific words and those skilled in the art.In addition any method similar or impartial to described content and material all can be applicable in the inventive method.
Other aspects of the present invention, due to disclosure herein, are apparent to those skilled in the art.
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.The experimental technique of unreceipted actual conditions in the following example, measures according to national standard conventionally.If there is no corresponding national standard, according to general international standard, normal condition or the condition of advising according to manufacturer, carry out.Unless otherwise indicated, otherwise all umbers are weight part, and all per-cents are weight percentage, and described polymericular weight is number-average molecular weight.
Unless otherwise defined or described herein, the familiar same meaning of all specialties used herein and scientific words and those skilled in the art.In addition any method similar or impartial to described content and material all can be applicable in the inventive method.
Embodiment
Below in conjunction with specific embodiment, further illustrate the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.
Embodiment 1:
The preparation method of foregoing invention, it comprises following processing step:
Fire retardant is proportionally blended in high-speed mixer high speed and is mixed to temperature to 110 ℃, stirs discharging in 3~6 minutes after adding Zinic stearas.Fire retardant, anti-aging agent, resin, compatilizer, lubricant, the crosslinking sensitizer of handling well complied with, coupling agent adds Banbury mixer.At Banbury mixer, to material plasticizing, powder and resin combine together and get final product discharging; Dual-screw pelletizer (production of Rhea polymkeric substance Equipment Limited, Nanjing) extruding pelletization.Four temperature sections in extruding pelletization process are: feeding section 100-115 ℃, transportation section 100-115 ℃, melt zone 120-130 ℃, head 125-135 ℃.
Product in embodiment 1 is carried out to Performance Detection test, and each performance numerical value is as table 1:
Table 1 embodiment 1 product performance test result
Embodiment 2:
The preparation method of above-mentioned CABLE MATERIALS is identical with embodiment 1
Embodiment 3:
The preparation method of above-mentioned CABLE MATERIALS is identical with embodiment 1
Embodiment 4:
The preparation method of above-mentioned CABLE MATERIALS is identical with embodiment 1
The foregoing is only preferred embodiment of the present invention, not in order to limit essence technology contents scope of the present invention, essence technology contents of the present invention is to be broadly defined in the claim scope of application, any technology entity or method that other people complete, if defined identical with the claim scope of application, also or a kind of change of equivalence, all by being regarded as, be covered by among this claim scope.
All documents of mentioning in the present invention are all quoted as a reference in this application, just as each piece of document, are quoted separately as a reference.In addition should be understood that, after having read foregoing of the present invention, those skilled in the art can make various changes or modifications the present invention, these equivalent form of values fall within the application's appended claims limited range equally.