CN100556947C - A kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material - Google Patents
A kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material Download PDFInfo
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- CN100556947C CN100556947C CNB2007100219339A CN200710021933A CN100556947C CN 100556947 C CN100556947 C CN 100556947C CN B2007100219339 A CNB2007100219339 A CN B2007100219339A CN 200710021933 A CN200710021933 A CN 200710021933A CN 100556947 C CN100556947 C CN 100556947C
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Abstract
The present invention relates to a kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric wire plastics, its prescription comprises following component: EVA elastomerics (ethylene-vinyl acetate copolymer), 40～80 parts of weight of content; POE elastomerics (ethylene-octene copolymer), 20～50 parts of weight of content; EMA elastomerics (ethylene-methyl acrylate copolymer), 5～15 parts of weight of content; Magnesium hydroxide or aluminium hydroxide, 30～70 parts of weight of content; Nano-sized magnesium hydroxide, 20～40 parts of weight of content; DCP (dicumyl peroxide), 0.1～0.6 part of weight of content.This material hardness≤85 Shao Shi A; Intensity 〉=9.0MPa; Stretch rate 〉=150%; Fire-retardantly reaching UL1581 VW-1 requirement, is the good environment protection high flame resistance polyolefin electric wire and cable polymer mixing material of a kind of flexibility.
Description
Technical field
The present invention relates to the electric wire plastics, particularly a kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric wire plastics macromolecule mixture.
Background technology
As everyone knows, the lead of electric wire is provided with sheath outward, this sheath except the most direct defencive function is provided, also should possess basic demands such as insulation, mechanical property.It is reported that the electric cable material with low smoke and halogen free major ingredient of domestic production at present and use is: 60～100 parts of weight of EVA (ethylene-vinyl acetate copolymer); 0～40 part of weight of PE (polyethylene); 120～170 parts of weight of magnesium hydroxide or aluminium hydroxide.Though this CABLE MATERIALS has low cigarette and Halogen characteristics, but material hardness is very big, in 90-98 Shao Shi A scope, can't require on pliability and the elastic electric wire to replace having the PVC CABLE MATERIALS of superior softness at soft electric wire, supply lead, personal electric product lead etc.And the PVC CABLE MATERIALS is owing to be can produce thick smoke after a kind of halogenous polymer combustion, and discharges toxic substance such as hydrogenchloride, do not meet environmental requirement, belongs to obsolete product.Because halide-free smokeless type fire-resistant cable material does not produce corrosive obnoxious flavour when burning, the amount of being fuming is also minimum, the disaster and the loss that material combustion can be caused in fire failure drop to bottom line, therefore at present in the world CABLE MATERIALS develop to halide-free smokeless type direction just gradually.Therefore, how to develop the good electric cable material with low smoke and halogen free of a kind of resilient flexible, and flame retardant resistance is superior, and electric wire meets UL1581VW-1 and the requirement of IEC332.3 testing vertical flammability is the problem that the present invention studies.
Summary of the invention
The object of the invention provide a kind of should softness high flame retardant again, and the polyolefin electric wire and cable plastics of environmental protection.
For achieving the above object, the technical solution used in the present invention is: a kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material, and its material prescription comprises following component:
(1), elastomeric base
1., the EVA elastomerics, chemical name is an ethylene-vinyl acetate copolymer, 58～62 parts of weight of content;
Wherein: the melting index≤5g/10min of described multipolymer;
Vinyl acetate content in the described multipolymer 〉=30% weight;
2., the POE elastomerics, chemical name is an ethylene-octene copolymer, 28～32 parts of weight of content;
Wherein: the melting index≤3g/10min of described multipolymer;
The hardness of described multipolymer≤75 Shao Shi A;
3., the EMA elastomerics, chemical name is an ethylene-methyl acrylate copolymer, 8～12 parts of weight of content;
Wherein: the melting index≤5g/10min of described multipolymer;
Methyl acrylate content in the described multipolymer 〉=20% weight;
(2), fire retardant
1., magnesium hydroxide or aluminium hydroxide, 45～55 parts of weight of content;
2., nano-sized magnesium hydroxide, 28～32 parts of weight of content;
Wherein: the particle diameter＜100nm of described nano-sized magnesium hydroxide;
(3), linking agent
1., DCP, chemical name is a dicumyl peroxide, 0.2～0.3 part of weight of content.
Related content in the technique scheme is explained as follows:
1, in the such scheme, described magnesium hydroxide or aluminium hydroxide adopt surface-treated magnesium hydroxide or aluminium hydroxide.Described nano-sized magnesium hydroxide also adopts surface-treated nano-sized magnesium hydroxide.So-called surface treatment is meant with coupling agent or activator wraps up processing to the surface of above-mentioned fire retardant.
2, in the such scheme, described crosslink agent DCP, chemical name is a dicumyl peroxide, has another name called dicumyl peroxide, chemical molecular formula is: [C
6H
5C (CH
3)
2O]
2
3, in the such scheme, described material prescription can also comprise phenolic antioxidant (such as, 1010 oxidation inhibitor etc.), and 0.5～3 part of weight of content is preferably 1～2 part of weight, and the best is 1.2～1.8 parts of weight; Silane coupling agent (such as, A-172 etc.), 1～5 part of weight of content is preferably 2～4 parts of weight, and the best is 2.1～2.5 parts of weight; Lubricant (such as, PE wax etc.), 0.5～5 part of weight of content is preferably 1～4 part of weight, and the best is 2～3 parts of weight.
In a word, major technique design of the present invention is to select for use the EVA multipolymer as the main body base material, and carry out modification with POE metallocene elastomerics and EMA elastomerics, add high performance nano-magnesium hydrate fire retardant filler and magnesium hydroxide or aluminium hydroxide fire retardant simultaneously, under promoter effects such as oxidation inhibitor, coupling agent and optimal crosslink agent DCP, adopted parallel dual-screw extruding machine or the mixing good low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material macromolecule mixture of flexibility that makes of Banbury mixer processing.
Because the technique scheme utilization, the present invention compared with prior art has following advantage and effect:
1, the hardness of present soft low-smoke no-halogen flame-proof polyolefine cable material both domestic and external is generally more than 88 Shao Shi A; Intensity 〉=7.0Mpa; Stretch rate 〉=150%; Fire-retardantly do not reach the UL1581VW-1 requirement.And the present invention is taken all factors into consideration flame retardant properties, mechanical and physical performance and the product hardness of whole prescription, its hardness≤85 Shao Shi A; Intensity 〉=9.0Mpa; Stretch rate 〉=150%; Fire-retardantly reaching UL1581 VW-1 requirement, is the good environment protection high flame resistance polyolefin electric wire and cable polymer mixing material of a kind of flexibility therefore.
2, the present invention in material prescription, adopt high vinyl acetate content ethylene-vinyl acetate copolymer as matrix, be characterized in resilient flexible, hardness is lower, helps fire-retardant from putting out.
3, the present invention has adopted POE metallocene elastomerics and EMA elastomerics in material prescription, more helps improving the filling and the dispersion of fire retardant, helps improving the intensity of base material.
4, the present invention is on the high-performance refractory filler is selected, and composite with magnesium hydroxide and an amount of nano-sized magnesium hydroxide, the filling ratio minimum of fire retardant makes that the hardness of the finished product is minimum, elastomeric flexible degree the best, and flame retardant properties is also best.And the nano-sized magnesium hydroxide adding is burnt material and is crusted under flame, keeps shape and the starvation and the heat of material, makes material have the self-extinguishing energy.
5, the present invention is aspect the base-material proportioning, and the ratio that highly-flexible elasticity base-material accounts for is very big, has taken into full account the equilibrium relationship of pliability and tensile strength.
6, the present invention is aspect the fire retardant proportioning, and the ratio of filling is very little.But owing to used the novel material nano-meter flame retardants, half that makes that fire retardant adding proportion in the product has only addition at ordinary times less than, but can guarantee very excellent flame-retardant.
7, the present invention has adopted superoxide DCP as linking agent in material prescription, and by parallel dual-screw extruding machine or Banbury mixer material is carried out dynamic vulcanization, has improved mechanical performance of products and heat resisting temperature.
Embodiment
Below in conjunction with embodiment the present invention is further described:
Embodiment one: a kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material
1, material prescription
| Component | Parts by weight |
| The EVA elastomerics, melting index≤5g/10min, vinyl acetate content 40% weight in the multipolymer | 50 |
| The POE elastomerics, melting index≤3g/10min, hardness≤75 Shao Shi A | 36 |
| The EMA elastomerics, melting index≤5g/10min, methyl acrylate content 30% weight in the multipolymer | 14 |
| The surface treatment magnesium hydroxide | 60 |
| The surface treating nano magnesium hydroxide, median size 40nm | 25 |
| Peroxide cross-linking agent (or claiming vulcanizing agent)-DCP | 0.3 |
| Phenolic antioxidant (or claiming anti-aging agent)-1010 oxidation inhibitor | 2 |
| Silane coupling agent-A-172 | 3 |
| Lubricant-PE wax | 3 |
| Amount to: | 193.3 |
Annotate: surface treatment magnesium hydroxide and surface treating nano magnesium hydroxide are meant with coupling agent or activator processing are wrapped up on the surface of above-mentioned fire retardant.This processing is finished by fire retardant manufacturer usually.
2, preparation technology
The first step: EVA, POE and EMA elastomerics are mixed by the prescription metering, add superoxide DCP then, on parallel dual-screw extruding machine, under extruder temperature is 150-190 ℃, mix and extrude, guarantee that peroxide breakdown is complete, and extruding pelletization.
Second step:, in blending device, mix with the elastomeric base after the previous step modification, the magnesium hydroxide that surface treatment is good, nano-sized magnesium hydroxide, phenolic antioxidant, silane coupling agent and the lubricant that surface treatment is good.After the mixing with mixture on parallel dual-screw extruding machine, be 140-170 ℃ at extruder temperature and mix down and extrude, guarantee that fire retardant is uniformly dispersed, and extruding pelletization, finished product packing.
3, technical indicator
Embodiment two: a kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material
1, material prescription
| Component | Parts by weight |
| The EVA elastomerics, melting index≤5g/10min, vinyl acetate content 40% weight in the multipolymer | 70 |
| The POE elastomerics, melting index≤3g/10min, hardness≤75 Shao Shi A | 25 |
| The EMA elastomerics, melting index≤5g/10min, methyl acrylate content 30% weight in the multipolymer | 5 |
| The surface treatment magnesium hydroxide | 50 |
| The surface treating nano magnesium hydroxide, median size 40nm | 30 |
| Peroxide cross-linking agent (or claiming vulcanizing agent)-DCP | 0.3 |
| Phenolic antioxidant (or claiming anti-aging agent)-1010 oxidation inhibitor | 1 |
| Silane coupling agent-A-172 | 2 |
| Lubricant-PE wax | 2 |
| Amount to: | 185.3 |
2, preparation technology
With embodiment one, no longer be repeated in this description.
3, technical indicator
Embodiment three: a kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material
1, material prescription
| Component | Parts by weight |
| The EVA elastomerics, melting index≤5g/10min, vinyl acetate content 40% weight in the multipolymer | 60 |
| The POE elastomerics, melting index≤3g/10min, hardness≤75 Shao Shi A | 30 |
| The EMA elastomerics, melting index≤5g/10min, methyl acrylate content 30% weight in the multipolymer | 10 |
| The surface treatment magnesium hydroxide | 55 |
| The surface treating nano magnesium hydroxide, median size 40nm | 30 |
| Peroxide cross-linking agent (or claiming vulcanizing agent)-DCP | 0.3 |
| Phenolic antioxidant (or claiming anti-aging agent)-1010 oxidation inhibitor | 1.5 |
| Silane coupling agent-A-172 | 2.5 |
| Lubricant-PE wax | 2.5 |
| Amount to: | 191.8 |
2, preparation technology
With embodiment one, no longer be repeated in this description.
Embodiment four: a kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material
1, material prescription
| Component | Parts by weight |
| The EVA elastomerics, melting index≤5g/10min, vinyl acetate content 40% weight in the multipolymer | 75 |
| The POE elastomerics, melting index≤3g/10min, hardness≤75 Shao Shi A | 20 |
| The EMA elastomerics, melting index≤5g/10min, methyl acrylate content 30% weight in the multipolymer | 5 |
| The surface treatment magnesium hydroxide | 65 |
| The surface treating nano magnesium hydroxide, median size 40nm | 25 |
| Peroxide cross-linking agent (or claiming vulcanizing agent)-DCP | 0.3 |
| Phenolic antioxidant (or claiming anti-aging agent)-1010 oxidation inhibitor | 1 |
| Silane coupling agent-A-172 | 2.5 |
| Lubricant-PE wax | 3 |
| Amount to: | 196.8 |
2, preparation technology
With embodiment one, no longer be repeated in this description.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (4)
1, a kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material is characterized in that: material prescription comprises following component:
(1), elastomeric base
1., the EVA elastomerics, chemical name is an ethylene-vinyl acetate copolymer, 58～62 parts of weight of content;
Wherein: the melting index≤5g/10min of described multipolymer;
Vinyl acetate content in the described multipolymer 〉=30% weight;
2., the POE elastomerics, chemical name is an ethylene-octene copolymer, 28～32 parts of weight of content;
Wherein: the melting index≤3g/10min of described multipolymer;
The hardness of described multipolymer≤75 Shao Shi A;
3., the EMA elastomerics, chemical name is an ethylene-methyl acrylate copolymer, 8～12 parts of weight of content;
Wherein: the melting index≤5g/10min of described multipolymer;
Methyl acrylate content in the described multipolymer 〉=20% weight;
(2), fire retardant
1., magnesium hydroxide or aluminium hydroxide, 45～55 parts of weight of content;
2., nano-sized magnesium hydroxide, 28～32 parts of weight of content;
Wherein: the particle diameter＜100nm of described nano-sized magnesium hydroxide;
(3), linking agent
1., DCP, chemical name is a dicumyl peroxide, 0.2～0.3 part of weight of content.
2, low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material according to claim 1 is characterized in that: described material prescription further comprises phenolic antioxidant, 0.5～3 part of weight of content.
3, low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material according to claim 1 is characterized in that: described material prescription further comprises silane coupling agent, 1～5 part of weight of content.
4, low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material according to claim 1 is characterized in that: described material prescription further comprises lubricant, 0.5～5 part of weight of content.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100219339A CN100556947C (en) | 2007-04-26 | 2007-04-26 | A kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material |
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| CNB2007100219339A CN100556947C (en) | 2007-04-26 | 2007-04-26 | A kind of low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material |
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| CN101041731A CN101041731A (en) | 2007-09-26 |
| CN100556947C true CN100556947C (en) | 2009-11-04 |
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