CN100509940C - Polymer composition and molded object obtained from the composition - Google Patents
Polymer composition and molded object obtained from the composition Download PDFInfo
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- CN100509940C CN100509940C CNB2006100931780A CN200610093178A CN100509940C CN 100509940 C CN100509940 C CN 100509940C CN B2006100931780 A CNB2006100931780 A CN B2006100931780A CN 200610093178 A CN200610093178 A CN 200610093178A CN 100509940 C CN100509940 C CN 100509940C
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Abstract
A thermoplastic resin composition (Y) characterized by comprising (AA) 100 parts by weight of a polymer such as a thermoplastic polymer or thermosetting polymer, (BB) 50 to 250 parts by weight of a metal hydroxide, (E) 0.1 to 40 parts by weight of a triazine compound, and (F) 0.1 to 40 parts by weight of a polyhydric alcohol; and a molded object obtained from the polymer composition. These are suitable for use as an insulating material or sheath for electric wires.
Description
This case is
On June 3rd, 2003, application number is
03813760.7, denomination of invention is
The thermoplastic resin composition, The formed body that polymer composition and said composition formDivide an application
Technical field
The present invention relates to thermoplastic resin composition and formed body thereof,, have the polymer composition of high fire resistance in particular to the thermoplastic resin composition who is particularly suitable for as wire insulator, sheath material, and by its formed body that forms.
Background technology
Existing trunking and SI semi-insulation material use polyvinyl chloride (PVC) more, and its evaluation aspect flexibility, flame retardant resistance and insulativity is fine.But because PVC contains more softening agent usually, heating waits and can cause softening agent to disappear, and makes material hardens, and can produce chlorine-containing gas during burning, and therefore, in recent years, people are devoted to replace the exploitation of the electric wire of PVC.
According to this situation, it for example is the various flame retardant resin compositions of matrix with ethylene-based polymers such as polyethylene that people have proposed.
Disclosed among the USP6232377 to contain and be selected from ethylene/vinyl base ester copolymer, ethylene/alpha, the special ethylene based polymer of beta-unsaturated carboxylic acid multipolymer, new LDPE (film grade), and contain the flame retardant resin composition of metal hydroxides, triaizine compounds and specific fire-retardant compound.But when these ethylene-based polymers have increased the addition of mineral compound such as metal hydroxides for improving flame retardant effect, flexible, flexibility can occur and be easy to problems such as reduction.
Therefore, the 1st purpose of the present invention is, the flame retardant effect excellence is provided, and has good characteristics of flexibility, flexibility, and the isolator and/or the sheath of the resin combination of tensile properties excellence and the said composition formed body, particularly electric wire that form.
In addition, use multiple thermoplastic polymer or thermosetting polymer in the purposes such as household electrical appliance, buildings, upholstery, trolley part, the inner distribution of electronic machine.But these polymkeric substance (particularly olefin polymer) mostly are inflammable substance greatly.
For preventing that fire from taking place, more and more higher to fire prevention, the fire-retardant requirement of various facilities, buildings etc., particularly the object that might become burning things which may cause a fire disaster such as household electrical appliance needs high fire resistance.The standard of the flame retardant resistance of inner wiring material is according to the testing vertical flammability evaluation that is called as the VW-1 test of for example UL specification of U.S. regulations such as (Underwriters Laboratories Inc.).The objective of the invention is to seek to be in the material that also has long-term durability under the situation of Gao Re and fire,, extensively adopt the method for when making polymkeric substance or formed body, adding fire retardant for giving high flame retardants such as most thermoplastic polymer and thermosetting polymer.
Fire retardant uses metal hydroxides mostly, borate, Organohalogen compounds, phosphorus series compounds such as phosphoric acid salt, red phosphorus, Organophosphorous compounds, organic nitrogen compound etc.Wherein, especially Organohalogen compounds and organo phosphorous compounds etc. can have been given play to the excellent fire retardant effect.
But above-mentioned halide-containing exists: thermolysis during resin forming, produce hydrogen halide, and resin itself is worn out, produce paintedly, and can produce problem such as hydrogen halide during fire.
Existing not halogen-containing fire retardant adopts inorganic combustion inhibitors such as aluminium hydroxide, magnesium hydroxide.But only use the flame retardant effect of this mineral compound poor, if heavy addition just can not show effect of sufficient, and if heavy addition, also might damage the rerum natura of resin itself, therefore, its use range is limited.
And in the not halogen-containing fire retardant that can reach better flame retardant effect, commonly used has specific Organophosphorous compounds and organic nitrogen compound etc.
The representative substances of existing organophosphate based flame retardant has triphenylphosphate (being called TPP down), but because this compounds thermotolerance is low, volatility is high, be not suitable for the resin forming under the high temperature, the mold fouling during particularly owing to moulding, and its use is restricted.
Make organophosphorus possess low volatility and have Japanese Patent Publication 51-19858 number, spy to open described condensed phosphoric acid esters such as clear 59-202240 communique as the scheme of fire retardant.Though they have than better thermotolerance of TPP and low volatility, the flame retardant effect of unit phosphorus content does not surpass TPP, needs heavy addition, therefore has the reason because of the effect of resin plasticizer, causes heat-drawn wire to descend the degradation problem significantly.
The scheme (for example, Japanese kokai publication sho 54-22450 communique, spy open flat 9-316250 communique) that dehydroamino acid based flame retardants such as polyphosphate, many phosphamides such as a lot of use ammonium polyphosphates are also arranged in addition.But Tripyrophosphoric acid has water-absorbent, reduces because of suction can cause resistance thereupon, is not suitable for the insulated hull material of electric wire, cable etc., and purposes is limited.
And be the overnutrition of sealing water bodys such as control lakes and marhshes recently, people are also seeking the alternative prescription of phosphorus flame retardant.
Organic nitrogen compounds such as trimeric cyanamide also demonstrate higher flame retardant effect (Japanese kokai publication hei 8-176343 communique etc.).But, often itself and phosphorus flame retardant are also used up to now, for reaching higher flame retardant effect.
Therefore, do not contain halogenated flame retardant and phosphorus flame retardant, also have the polymer composition of high fire resistance, especially be suitable for use as the flame retardant resistance polymer composition of electric wire with coating material, sheath etc. even the 2nd purpose of the present invention provides.
Summary of the invention
Thermoplastic resin composition of the present invention (Y) is contained (A) vinyl copolymer of 20～64.9 weight %, (B) metal hydroxides of 35～70 weight % and (C) graft modification ethene based polymer of 0.1～30 weight %, wherein, (A) comprise (A-1): the ethene-alpha-olefin copolymer that the alpha-olefin of ethene and carbonatoms 3～10 forms and (A-2): the ethylene-based polymer (A-1), and weight ratio (A-1)/(A-2) is 20/80～100/0.
In thermoplastic resin composition (Y), above-mentioned graft modification ethene based polymer (C) is preferably the graft modification body of unsaturated carboxylic acid or derivatives thereof.
And in thermoplastic resin composition (Y), the preferred grafting amount of above-mentioned graft modification ethene based polymer (C) is the graft modification body of the unsaturated carboxylic acid or derivatives thereof of 0.01～10 weight %.
And in thermoplastic resin composition (Y), ethylene-based polymer before the modification of the graft modification ethene based polymer of above-mentioned (C) unsaturated carboxylic acid or derivatives thereof is the ethene-alpha-olefin copolymer that the alpha-olefin of ethene and carbonatoms 3～10 forms, and is preferably
(i) density (ASTM D1505,23 ℃) scope is 857～890kg/m
3
Melt flow rate (MFR) MFR under (ii) 190 ℃, 2.16kg load
2(ASTM D1238, load 2.16kg, 190 ℃) are in the scope that 0.1～20g/10 divides;
(iii) the scope of the molecular weight distributing index Mw/Mn of GPC method evaluation is 1.5～3.5.
And the above-mentioned ethene-alpha-olefin copolymer (A-1) among the thermoplastic resin composition (Y) is preferably:
(i) density (ASTM D1505,23 ℃) scope is 855～910kg/m
3
Melt flow rate (MFR) MFR under (ii) 190 ℃, 2.16kg load
2(ASTM D1238, load 2.16kg, 190 ℃) are in the scope that 0.1～100g/10 divides;
(iii) the scope of the molecular weight distributing index Mw/Mn of GPC method evaluation is 1.5～3.5.
And the above-mentioned ethene-alpha-olefin copolymer (A-1) among the thermoplastic resin composition (Y) is preferably:
(i) density (ASTM D1505,23 ℃) scope is 857～890kg/m
3
Melt flow rate (MFR) MFR under (ii) 190 ℃, 2.16kg load
2(ASTM D1238, load 2.16kg, 190 ℃) are in the scope that 0.1～20g/10 divides;
(iii) the scope of the molecular weight distributing index Mw/Mn of GPC method evaluation is 1.5～3.5;
(iv)
13C-NMR spectrum reaches by following formula
B value=[POE]/(2 * [PE] [PO])
The B value of trying to achieve is 0.9～1.5, and in the formula, PE is the mole fraction of the structural unit of ethylene derivative in the interpolymer, and PO is the mole fraction of structural unit alpha-olefin derived in the interpolymer, and POE is the ratio of the ethene-alpha-olefin chain in all divalence chains in the interpolymer.
And, polymer composition of the present invention (Z) is 100 weight parts with at least a kind of polymer (AA) that is selected from thermoplastic polymer (aa1) and the thermosetting polymer (aa2), each composition that also contains following ratio, metal hydroxides (BB) 50～250 weight parts, triazine based compound (E) 0.1～40 weight part and polyvalent alcohol (F) 0.1～40 weight part.
(Z) preferred thermoplastic polymkeric substance (aa1) is the polymer composition of ethylene-based polymer.
And the weight ratio of preferred triazine based compound (E) of polymer composition (Z) and polyvalent alcohol (F) is in the scope of following formula (1)
(F)/(E)≥1 (1)
Formed body of the present invention is formed by above-mentioned thermoplastic resin composition (Y) or polymer composition (Z).
Above-mentioned formed body of the present invention is preferably the isolator of electric wire.And above-mentioned formed body is preferably the sheath of electric wire.
Description of drawings
Fig. 1 is the partly cut-away's stereographic map according to the VW-1 corrosion chamber of UL specification specifies.Among Fig. 1,1 is container, and 2 is insulated line, and 3 is kraft paper, and 4 is absorbent cotton, and 5 is burner.Length a is 10 inches among Fig. 1, and length b is 17 inches, and length c is 3 inches, is 1 and 1/2 inch apart from d, and angle θ 1 is 70 °, and angle θ 2 is 20 °.
Embodiment
Formed body that specifies thermoplastic resin composition of the present invention (Y), polymer composition (Z) below and form by said composition and uses thereof.
Thermoplastic resin composition (Y)
Thermoplastic resin composition of the present invention (Y) is contained (A) vinyl copolymer of 20～64.9 weight %, (B) metal hydroxides of 35～70 weight % and (C) graft modification ethene based polymer of 0.1～30 weight %, wherein, (A) comprise (A-1): the ethene-alpha-olefin copolymer that the alpha-olefin of ethene and carbonatoms 3～10 forms and (A-2): the ethylene-based polymer (A-1), and weight ratio (A-1)/(A-2) is 20/80～100/0.
(A) vinyl copolymer
Ethylene-based polymer of the present invention contain ethene-alpha-olefin copolymer (A-1) and (A-1) outside ethylene-based polymer (A-2), wherein, (A-1)/(A-2) weight ratio is 20/80～100/0, is preferably 50/50～100/0, more preferably 70/30～100/0.And in the present invention, constitute (A-1) of vinyl copolymer (A) and (A-2) be preferably and also be contained among the thermoplastic resin composition (Y), also can be and (A-2) be prefabricated into composition by (A-1), make thermoplastic resin composition (Y) again, when making thermoplastic resin composition (Y), also can separately add (A-1) and (A-2).
(A-1) ethene-alpha-olefin copolymer
The used ethene-alpha-olefin copolymer (A-1) of the present invention is the multipolymer of the alpha-olefin of ethene and carbonatoms 3～10.The concrete example of the alpha-olefin of this carbonatoms 3～10 can be enumerated propylene, 1-butylene, 1-amylene, 1-hexene, 3-methyl-1-butene, 3-Methyl-1-pentene, 3-ethyl-1-amylene, 4-methyl-1-pentene, 4-methyl isophthalic acid-hexene, 4,4-dimethyl-1-amylene, 4-ethyl-1-hexene, 1-octene, 3-ethyl-1-hexene, 1-octene, 1-decene etc.Wherein preferably use in propylene, 1-butylene, 1-hexene, the 1-decene more than at least a kind.
The content of each structural unit is preferably in the ethene-alpha-olefin copolymer, the structural unit content of ethylene derivative is usually at 75～95 moles of %, be preferably 80～95 moles of %, the structural unit content of at least a kind of compound deriving of alpha-olefin that is selected from carbonatoms 3～10 is preferably 5～20 moles of % usually at 5～25 moles of %.
And the used ethene-alpha-olefin copolymer of the present invention (A-1) preferably has following character, promptly
(i) density is 855～910kg/m
3, be preferably 857～890kg/m
3
Melt flow rate (MFR) MFR under (ii) 190 ℃, 2.16kg load
2Scope is 0.1～100g/10 branch, is preferably 0.1～20g/10 branch;
(iii) the molecular weight distributing index Mw/Mn scope by the evaluation of GPC method is 1.5～3.5, is preferably 1.5～3.0, more preferably 1.8～2.5, more preferably
(iv)
13C-NMR spectrum reaches by following formula
B value=[POE]/(2 * [PE] [PO])
The B value of trying to achieve is 0.9～1.5, be preferably 1.0～1.2, in the formula, PE is the mole fraction of the structural unit of ethylene derivative in the interpolymer, PO is the mole fraction of structural unit alpha-olefin derived in the interpolymer, and POE is the ratio of the ethene-alpha-olefin chain in all divalence chains in the interpolymer.
The B value is the index of the distribution of the alpha-olefin of ethene in the expression ethene-alpha-olefin copolymer and carbonatoms 3～10.Can try to achieve according to the report of J.C.Randall (Macromolecules, 15,353 (1982)), J.Ray (Macromolecules, 10,773 (1977)) etc.
The B value is big more, and the segment of ethene or alpha-olefin copolymer is short more, and ethene demonstrates the distribution same with alpha-olefin, and copolymer rubber demonstrates narrower composition and distributes.And the B value is less than 1.0 o'clock, and the composition of ethene-alpha-olefin copolymer distributes and broadens, and shortcoming is the handlability variation.
More preferably, (v)
13T in the C-NMR spectrum
α βWith T
α αStrength ratio (T
α β/ T
α α) be below 0.5, be preferably below 0.4, more preferably below 0.3.Among the present invention,
13T in the C-NMR spectrum
α αAnd T
α βBe the CH in the alpha-olefin derived structural unit of carbonatoms more than 3
2The intensity at peak, as follows, represent the two kind CHs different with respect to the position of tertiary carbon
2
This T
α β/ T
α αStrength ratio can be tried to achieve as follows.Ethene-alpha-olefin copolymer
13C-NMR spectrum can be tried to achieve with for example JEOL-GX270 NMR determinator of NEC (strain) system, measure using sample concentration to transfer to the mixing solutions of hexachlorobutadiene/d6-benzene=2/1 (volume ratio) of 5 weight %, is benchmark with 67.8MHz, 25 ℃, d6-benzene (128ppm).Record
13C-NMR spectrum is analyzed according to the scheme (Analysis Chemistry, 43, p1245 (1971), J.C.Randall (Review Macromolecular Chemistry Physics, C29,201 (1989))) of Lin Deman Adiemus, tries to achieve T
α β/ T
α αStrength ratio.
Ethene-alpha-olefin copolymer of the present invention preferably uses except that having above-mentioned characteristic, also has the multipolymer of following characteristic.
(the melt flow rate (MFR) MFR under vi) 190 ℃, 10kg load
10With the melt flow rate (MFR) MFR under 190 ℃, 2.16kg load
2Ratio, MFR
10/ MFR
2Satisfy following relation:
MFR
10/MFR
2≥5.7
Mw/Mn+4.7≤MFR
10/MFR
2
Work as MFR
10, MFR
2, when Mw/Mn does not satisfy above-mentioned relation, the formability or the strength of materials or the two all can descend.
The manufacture method of ethene-alpha-olefin copolymer (A-1)
Above-mentioned ethene-alpha-olefin copolymer (A-1), in the presence of Z-type catalyst that can be by constituting, the metalloscene catalyst etc. at V compound and organo-aluminium compound, make the alpha-olefin copolymer of ethene and the carbonatoms more than at least a kind 3～10 and make, preferably use metalloscene catalyst.
This metalloscene catalyst can by Metallocenic compound (a), organoaluminum oxo-compounds (b) with and/or form with all compounds (c) that should form ion pair of Metallocenic compound (a), also can by (a) and (b) and/or (c) and organo-aluminium compound (d) form.Ethene-alpha-olefin copolymer can adopt in the liquid phase of hydrocarbon solvent in the presence of above-mentioned catalyzer usually, adopts arbitrary methods such as batch-type, semi continuous, continous way to carry out.When using the catalyzer of Metallocenic compound (a) and organoaluminum oxo-compounds (b) and/or ionization ionic compound (c) formation, the concentration of the Metallocenic compound (a) in the polymerization system is generally 0.00005～0.1mmol/l (polymerization volume), is preferably 0.0001～0.05mmol/l.And the feed rate of organoaluminum oxo-compounds (b) to satisfy the mol ratio (Al/ transition metal) of the transition metal in the Metallocenic compound in aluminium atom and the polymerization system be 1～10000, be preferably 10～5000.Under the situation of ionization ionic compound (c), the ionization ionic compound (c) in the polymerization system is (an ionization ionic compound (c)/Metallocenic compound (a)) 0.5～20 with the mol ratio of Metallocenic compound (a), is preferably 1～10.And when using organo-aluminium compound, consumption is 0～5mmol/l (a polymerization volume) usually, is preferably 0～2mmol/l.
The copolyreaction condition is, temperature of reaction is-20～+ 150 ℃ usually, is preferably 0～120 ℃, more preferably 0～100 ℃, pressure be greater than 0,7.8MPa (80kgf/cm
2, gauge pressure) below, be preferably more than 0,4.9MPa (50kgf/cm
2, gauge pressure) below.
To the supply ethene and the alpha-olefin of polymerization system, with the ethene-alpha-olefin copolymer (A-1) that can obtain above-mentioned specific composition.Also can use hydrogen equimolecular quantity conditioning agent during copolymerization.
Ethylene-based polymer (A-2)
The used ethylene-based polymer (A-2) of the present invention is the ethylene-based polymer except that (A-1), can enumerate the alpha-olefin-nonconjugated olefin copolymer of straight-chain low density polyethylene, hp-ldpe, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-methyl methacrylate methyl terpolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer and ionic polymer, ethylene-methyl acrylate multipolymer, ethene-carbonatoms 3～20.(A-2) be preferably the vinyl copolymer outside (A-1).
In addition, the used also available silane grafting of vinyl copolymer (A) of the present invention.
When modulating this silane grafted ethene based copolymer (A), can when using vinyl silanes, also be used to promote silane grafted superoxide.In the present invention, this silane grafted vinyl copolymer (A) can will be made without graft modification ethene based polymer (C), vinyl silane compound and the superoxide melting mixing of silane grafted vinyl copolymer (A), metal hydroxides (B), unsaturated carboxylic acid or derivatives thereof by existing various known methods.Among the gained thermoplastic resin composition of the present invention, contain the silane grafted ethene based copolymer (A) of generation.
Above-mentioned vinyl silane compound specifically can be enumerated γ-methacrylic oxygen propyl group trimethoxy silane, vinyl trimethoxy silane, vinyl three ethoxy silane, vinyl three fourth oxosilanes, ethene three ('beta '-methoxy ethoxy silane), vinyl triacetyl silane, methyl trimethoxy oxosilane etc.Wherein be preferably γ-methacrylic oxygen propyl group trimethoxy silane, vinyl trimethoxy silane, vinyl three ethoxy silane.If add up to 100 weight % with (A)+(B)+(C), the usage ratio of vinyl silane compound is generally 0.5～2.5 weight %, is preferably 0.5～2 weight %.Use another kind of method for expressing, promptly with 100 weight parts that add up to of (A)+(B)+(C), then the usage ratio of vinyl silane compound is generally 0.5～2.5 weight part, is preferably 0.5～2 weight part.When using vinyl silane compound with aforementioned proportion, silane grafting speed is fast, and can reach suitable graft(ing) degree.As a result, just can form the formed body that elongation at break and breaking tenacity have fine balance, for example the electric wire coatings layer.
In the present invention, as mentioned above,, can when using vinyl silane compound, use superoxide for promoting the silane graft reaction of vinyl copolymer (A).
This superoxide is that organo-peroxide specifically can be enumerated benzoyl peroxide, the benzoyl peroxide dichloro, dicumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-two (benzo peroxidation) hexin-3,1,4-di-tert-butyl dicumyl peroxide, lauroyl peroxide, tertiary butyl peracetic acid ester, 2,5-dimethyl-2,5-di-tert-butyl peroxide hexin-3,2,5-dimethyl-2,5-diperoxy tertiary butyl hexane, the benzo peroxide tertiary butyl, tertiary butyl is crossed phenylacetate, tertiary butyl is crossed isobutyl ester, tertiary butyl is crossed secondary octanoate, Te Ji crosses the trimethylacetic acid ester, cross the pivalyl cumene, tertiary butyl is crossed diethylacetic acid salt, Diisopropyl azodicarboxylate, dimethyl azo isobutyl ester etc.
Wherein preferably use peroxidation dichloro benzoyl, di-tert-butyl peroxide, 2,5-dimethyl-2,5-diperoxy tertiary butyl hexin-3,2,5-dimethyl-2,5-diperoxy tertiary butyl hexane, 1, the dialkyl peroxide of 4-di-tert-butyl dicumyl peroxide etc.
With the 100 weight % that add up to of (A)+(B)+(C), then the usage ratio of superoxide is generally 0.005～0.15 weight %, is preferably 0.01～0.1 weight %.Use another kind of method for expressing, promptly with 100 weight parts that add up to of (A)+(B)+(C), the usage ratio of superoxide is generally 0.005～0.15 weight part, is preferably 0.01～0.1 weight part.Use superoxide with aforementioned proportion, can the appropriate silane graft reaction that promotes vinyl silane compound and vinyl copolymer (A).
Metal hydroxides (B)
The used metal hydroxides of the present invention can use aluminium hydroxide, magnesium hydroxide, calcium hydroxide, hydrated barta, manganous hydroxide, zinc hydroxide, hydrotalcite etc. or its mixture separately.Wherein preferred especially magnesium hydroxide or the hydrogeneous magnesian mixture of using separately.
Graft modification ethene based polymer (C)
In the present invention, the ethylene-based polymer as the raw material of graft modification ethene based polymer is preferably ethene-alpha-olefin copolymer.The ethene-alpha-olefin copolymer that is used as the raw material of graft modification ethene based polymer is preferably the multipolymer of the alpha-olefin of ethene and carbonatoms 3～10.The alpha-olefin of carbonatoms 3～10 specifically can be enumerated propylene, 1-butylene, 1-amylene, 1-hexene, 3-methyl-1-butene, 3-Methyl-1-pentene, 3-ethyl-1-amylene, 4-methyl-1-pentene, 4-methyl isophthalic acid-hexene, 4,4-dimethyl-1-amylene, 4-ethyl-1-hexene, 1-octene, 3-ethyl-1-hexene, 1-octene, 1-decene.They can use separately, also can two or more and usefulness.Wherein especially preferably use in propylene, 1-butylene, 1-hexene, the 1-decene more than at least a kind.
The content of each structural unit in the vinyl copolymer is preferably, the structural unit content of ethylene derivative is generally 75～95 moles of %, be preferably 80～95 moles of %, the structural unit content of at least a kind of compound deriving that is selected from the alpha-olefin of carbonatoms 3～10 is generally 5～25 moles of %, is preferably 5～20 moles of %.
The used ethene-alpha-olefin copolymer of graft modification is preferably has following rerum natura, promptly
(i) density is 855～910kg/m
3, be preferably 857～890kg/m
3
Melt flow rate (MFR) MFR under (ii) 190 ℃, 2.16kg load
2Scope is 0.1～100g/10 branch, is preferably 0.1～20g/10 branch;
(iii) the molecular weight distributing index Mw/Mn scope by the evaluation of GPC method is 1.5～3.5, is preferably 1.5～3.0, more preferably 1.8～2.5, more preferably
(iv)
13C-NMR spectrum reaches by following formula
B value=[POE]/(2 * [PE] [PO])
The B value of trying to achieve is 0.9～1.5, be preferably 1.0～1.2, in the formula, PE is the mole fraction of the structural unit of ethylene derivative in the interpolymer, PO is the mole fraction of structural unit alpha-olefin derived in the interpolymer, and POE is the ratio of the ethene-alpha-olefin chain in all divalence chains in the interpolymer.
Other ethene-alpha-olefin copolymer as the raw material of graft modification ethene polymers is suitable for selecting for use the material that has same characteristic features with (A-1) used ethene-alpha-olefin copolymer, and the comonomer kind of multipolymer, density, molecular weight etc. both can be identical with (A-1) also can be different with it.
Graft modification ethene based polymer of the present invention is to have at least the vinyl compound of a kind of polar group that above-mentioned vinyl copolymer graft modification is got by using.There is the vinyl of polar group can enumerate the vinyl compound of oxy radicals such as having acid, acid anhydrides, ester, alcohol, epoxy, ether, vinyl compound with nitrogen-containing groups such as isocyanic ester, acid amides, the vinyl compound of silicon-containing groups such as vinyl silanes etc.
Wherein the vinyl compound of preferred oxy radical is preferably unsaturated epoxy monomer, unsaturated carboxylic acid and derivative thereof etc.
Unsaturated epoxy monomer can be enumerated unsaturated glycidyl ether, unsaturated glycidyl ester (for example glycidyl methacrylate) etc.
Unsaturated carboxylic acid can be enumerated vinylformic acid, toxilic acid, fumaric acid, tetrahydrophthalic acid, methylene-succinic acid, citraconic acid, butenoic acid, methylacrylic acid and Nadic acid
TM(internally-oriented cis-two ring [2,2,1] heptan-5-alkene-2,3-diacid) etc.
And olefinically unsaturated carboxylic acid derivatives can be enumerated for example etheride, amidate, imidization thing, acid anhydrides and the carboxylate etc. of above-mentioned unsaturated carboxylic acid.Specifically can enumerate Malaysia acyl chlorides, maleimide, maleic anhydride, citraconic anhydride, toxilic acid one methyl esters, dimethyl maleate, toxilic acid glycidyl ester etc.
Wherein, be preferably unsaturated dicarboxylic acid or its acid anhydrides, be preferably toxilic acid, Nadic acid TM or its acid anhydrides especially.In addition, the grafting position that is grafted on the unsaturated carboxylic acid or derivatives thereof on the above-mentioned unmodified ethylene-based polymer is not had particular restriction, and the unsaturated carboxylic acid or derivatives thereof can combine with any carbon atom of the ethylene-based polymer that constitutes this graft modification ethene based polymer.
The available existing various known method modulation of above-mentioned graft modification ethene based polymer (C) form for example following method:
(1) with forcing machine etc. with above-mentioned unmodified ethylene-based polymer fusion, add unsaturated carboxylic acid etc. and carry out graft copolymerization;
(2) above-mentioned unmodified ethylene-based polymer is dissolved in solvent, adds unsaturated carboxylic acid, carry out graft copolymerization.
Can realize efficient graft copolymerization for the grafted monomer that makes above-mentioned unsaturated carboxylic acid etc., arbitrary method all is preferably carries out graft reaction in the presence of radical initiator.
Above-mentioned radical initiator can use organo-peroxide, azo-compound etc.This type free base initiator specifically can be enumerated organo-peroxides such as benzoyl peroxide, benzoyl peroxide dichloro, dicumyl peroxide; Azo compounds such as Diisopropyl azodicarboxylate, dimethyl azo isobutyl ester.Wherein, preferably use dicumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di-tert-butyl peroxide hexin-3,2,5-dimethyl-2,5-diperoxy tertiary butyl hexane, 1, dialkyl peroxides such as 4-di-tert-butyl dicumyl peroxide.
With unmodified ethylene-based polymer is 100 weight parts, and then the consumption of above-mentioned radical initiator is generally 0.001～1 weight part, is preferably 0.003～0.5 weight part, more preferably 0.05～0.3 weight part.
Use the graft reaction of above-mentioned radical initiator or do not use the range of reaction temperature of the graft reaction of radical initiator to be made as 60～350 ℃ usually, be preferably 150～300 ℃.
Other additive
In thermoplastic resin composition of the present invention, except that above-mentioned substance, as required, also can add additives such as antioxidant, UV light absorber, weather-proof stablizer, heat-resisting stabilizing agent, static inhibitor, fire retardant, pigment, dyestuff, lubrication prescription.Its addition depends on adding purpose.When for example using with silicone resin etc.,, can use about 0.1～10 weight part usually with 100 weight parts that add up to of above-mentioned (A)+(B)+(C) to the fire retardant of representative.
The thermoplastic resin composition
Each composition of thermoplastic resin composition of the present invention contains: be limited to 20 weight % under the content of vinyl copolymer (A), be preferably 25 weight %, 30 weight % more preferably, on be limited to 64.9 weight %, be preferably 60 weight %, more preferably 59.9 weight %, more preferably 55 weight %; And be limited to 35 weight % under the content of metal hydroxides (B), be preferably 40 weight %, on be limited to 70 weight %; Be limited to 0.1 weight % under the content of graft modification ethene based polymer (C), on be limited to 30 weight %, be preferably 10 weight %, more preferably 6 weight %.(A)+(B)+(C)=100 during weight %, concrete scope is preferably 25～60 weight %, more preferably 30～55 weight % for for example vinyl copolymer (A) is 20～64.9 weight %; Metal hydroxides (B) is 35～70 weight %, is preferably 40～70 weight %, and graft modification ethene based polymer (C) is 0.1～30 weight %, is preferably 0.1～10 weight %, more preferably 0.1～6 weight %.
In the present invention, when with (A), (B), (C) add up to 100 weight parts the time, preferably also add aftermentioned triazine based compound (E) 0.1～20 weight part, polyvalent alcohol (F) 0.1～20 weight part.Triazine based compound (E) is the compound that contains triazine ring, can enumerate trimeric cyanamide, cyanurodiamide, melam, benzene guanamine, acetyl guanamine, phthaloyl two guanamines, melamine cyanurea ester, melamine pyrophosphate, butyryl two guanamines, norbornane two guanamines, methylene radical two (trimeric cyanamide), ethylene (trimeric cyanamide), trimethylene two (trimeric cyanamide), tetramethylene two (trimeric cyanamide), hexamethylene two (trimeric cyanamide), 1,3-hexenes two (trimeric cyanamide) etc. are preferably the melamine cyanurea ester especially.
And polyvalent alcohol (F) can be enumerated tetramethylolmethane, Dipentaerythritol, tripentaerythritol, many tetramethylolmethanes, trihydroxyethyl isocyanurate urethane, polyoxyethylene glycol, glycerine, starch, glucose, Mierocrystalline cellulose, Sorbitol Powder etc.
In the present invention, when the weight ratio (E)/(F) of triazine based compound (E) and polyvalent alcohol (F) is preferably more than when equaling 1, can further improve flame retardant effect.
Thermoplastic resin composition of the present invention (Y) adopts existing known method with mentioned component (A), (B) and (C), and as required and the additive melting mixing that adds modulation forms.
For example, with above-mentioned each composition while or after adding for example middle mixing such as Henschel mixing roll, V-type mixing roll, rotation mixing roll, ribbon blender in batches, form with melting mixings such as single screw extrusion machine, multiple screw extruder, kneading machine, Banburies again.
Wherein, use the device of mixing behavior excellences such as multiple screw extruder, kneading machine, Banbury, can obtain the homodisperse high-quality polymer composition of each composition.
And all can add the additive that meets the needs of in above-mentioned any stage, as antioxidant etc.
Polymer composition (Z)
The following describes polymer composition of the present invention (Z).
Polymer composition of the present invention (Z) is characterised in that, with at least a kind of polymkeric substance (AA) of being selected from thermoplastic polymer (aa1) and the thermosetting polymer (aa2) is 100 weight parts, and each component content ratio is: metal hydroxides (BB) 50～250 weight parts; Triazine based compound (E) 0.1～40 weight part; Polyvalent alcohol (F) 0.1～40 weight part.
The used polymkeric substance of polymer composition of the present invention (AA) is at least a kind of polymkeric substance that is selected from thermoplastic polymer (aa1) and the thermosetting polymer (aa2).Can use separately, also can multiplely mix.
Thermoplastic polymer (aa1)
Thermoplastic polymer can be enumerated olefin polymers such as ethylene-based polymer, acrylic polymer, polybutene, poly(4-methyl-1-pentene); Styrene block copolymer; Vinyl Acetate Copolymer; Acrylic acid polymer such as polyacrylic ester, polyacrylonitrile; Polyethers such as polyphenylene oxide, polyoxyethylene; Polyesters such as PET; Urethane, polymeric amide, polyphenylene sulfide; ABS resin; Polycarbonate; Graft modification olefin polymer etc.They both can use separately, also can a plurality ofly mix.Wherein optimal ethylene based polymer and styrene block copolymer.
Ethylene-based polymer can be enumerated ethene-alpha-olefin copolymer, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene methacrylic acid methyl terpolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer and ionomer thereof, ethylene-methyl acrylate multipolymer, graft modification ethene-alpha-olefin copolymer etc.Molecular structure can be the straight chain shape, also can be a chain of long-chain branch or short-chain branch.And these polymkeric substance also can be and poly mixture.
Under the situation of ethene-alpha-olefin copolymer, be carbonatoms 3～20, be preferably 3～10 the alpha-olefin and the random copolymers of ethene as the alpha-olefin of comonomer.Specifically having of alpha-olefin, propylene, 1-butylene, 1-amylene, 1-hexene, 4-methyl-1-pentene, 1-octene, 1-decene, 1-dodecylene and combination thereof.Wherein be preferably 1-butylene, 1-hexene, 1-octene.And as required, for example also can contain 1 on a small quantity, 6-hexadiene, 1, cyclenes such as diene such as 8-octadiene, the former bornene of 5-ethylidene-2-, Dicyclopentadiene (DCPD) and cyclopentenes etc.Ethylene content in the multipolymer is 30～99.9 moles of %, is preferably 50～99.5 moles of %, more preferably 75～99.5 moles of %.
The manufacture method of above-mentioned ethylene-based polymer does not have particular restriction, can make by the ethene list that uses catalysts for radical polymerization, Karen Phillips catalyzer, Ziegler-Natta catalyst or metalloscene catalyst copolymerization poly-or ethene and alpha-olefin.
The used ethylene-based polymer of polymer composition particularly of the present invention (Z), the preferred ethene-alpha-olefin copolymer that uses (A-1) composition that can be used as above-mentioned thermoplastic resin composition (Y).
Styrene block copolymer can be enumerated vinylbenzene-butylene-styrene segmented copolymer, styrene isoprene styrene block copolymer (SIS), styrene ethylene styrene block copolymer, styrene-ethylene-propylene-styrene segmented copolymer, styrene-butadiene-styrene block copolymer and hydride thereof etc.
Thermosetting polymer (aa2)
Thermosetting polymer of the present invention can be enumerated resol, urea resin, melamine resin, unsaturated polyester, epoxy resin, urethane, silicone resin etc.They both can use separately, also can a plurality ofly mix.
Metal hydroxides (BB)
The used metal hydroxides of the present invention can use aluminium hydroxide, magnesium hydroxide, calcium hydroxide, hydrated barta, manganous hydroxide, zinc hydroxide, hydrotalcite etc. or its mixture separately.Wherein preferred especially magnesium hydroxide or the hydrogeneous magnesian mixture of using separately.
Triazine based compound (E)
Triazine based compound of the present invention, it can be the compound that contains triazine ring, can enumerate trimeric cyanamide, cyanurodiamide, melam, benzene guanamine, acetyl guanamine, phthaloyl two guanamines, melamine cyanurea ester, melamine pyrophosphate, butyryl two guanamines, norbornane two guanamines, methylene radical two (trimeric cyanamide), ethylene (trimeric cyanamide), trimethylene two (trimeric cyanamide), tetramethylene two (trimeric cyanamide), hexamethylene two (trimeric cyanamide), 1,3-hexenes two (trimeric cyanamide) etc. are preferably the melamine cyanurea ester especially.
Polyvalent alcohol (F)
Polyvalent alcohol of the present invention can be enumerated tetramethylolmethane, Dipentaerythritol, tripentaerythritol, many tetramethylolmethanes, trihydroxyethyl isocyanurate urethane, polyoxyethylene glycol, glycerine, starch, glucose, Mierocrystalline cellulose, Sorbitol Powder etc.
Other additive
In the polymer composition of the present invention, except that above-mentioned substance, as required, also can add additives such as antioxidant, UV light absorber, weather-proof stablizer, heat-resisting stabilizing agent, static inhibitor, fire retardant, pigment, dyestuff, lubrication prescription.
Polymer composition
Each composition of polymer composition of the present invention (Z) contains, with at least a kind of polymkeric substance (AA) of being selected from thermoplastic polymer (aa1) and the thermosetting polymer (aa2) is 100 weight parts, metal hydroxides (BB) is 50～250 weight parts, be preferably 70～200 weight parts, triazine based compound (E) is 0.1～40 weight part, be preferably 10～30 weight parts, polyvalent alcohol (F) is 0.1～40 weight part, is preferably 10～30 weight parts.
And be further to improve flame retardant effect, the weight ratio (F)/(E) of polyvalent alcohol (F) and triaizine compounds (E) is preferably more than and equals 1.
Polymer composition of the present invention (Z) is with existing known method with mentioned component (AA), (BB), (E) and (F), and as required and the additive melting mixing that adds modulation forms.
For example, polymer composition of the present invention is with above-mentioned each composition while or after adding for example middle mixing such as Henschel mixing roll, V-type mixing roll, rotation mixing roll, ribbon blender in batches, forms with melting mixings such as single screw extrusion machine, multiple screw extruder, kneading machine, Banburies again.
Wherein, use the device of mixing behavior excellences such as multiple screw extruder, kneading machine, Banbury, can obtain the homodisperse high-quality polymer composition of each composition.
All can add the additive that meets the needs of in above-mentioned any stage, as antioxidant etc.The formed body that thermoplastic resin composition (Y) or polymer composition (Z) form
Formed body of the present invention can be by using thermoplastic resin composition of the present invention (Y) or the polymer composition (Z) that is made by aforesaid method, with existing known melt molding method, methods such as for example extrusion moulding, rotoforming, calendering formation, injection molding, compressed moulding, transfer mould, powder compacting, blow molding, vacuum forming are shaped to different shape.
When thermoplastic resin composition of the present invention (Y) or polymer composition (Z) are used for the purposes of coated electric wire such as trunking, wire insulator for example, formed body of the present invention is as coatings such as trunking, wire insulators, coatings such as this trunking, wire insulator, be with existing known method for example method such as extrusion moulding be formed at around the electric wire.
Embodiment
Specify the present invention with embodiment below, but the present invention is not limited to these embodiment.
Estimate ethene-alpha-olefin copolymer (A-1) and aftermentioned Tafmer as follows
TMThe rerum natura of A.
(1) density
Under 190 ℃, 2.16kg load, measure the thigh material behind the MFR, handled 1 hour down, after slowly cooling to room temperature in 1 hour, measure again with density gradient method at 120 ℃.
(2) alpha-olefin content, T
α β/ T
α α, the B value
By
13The C-NMR spectrometry
(3) limiting viscosity [η]
Under 135 ℃, in naphthalane, measure.
(4)Mw/Mn
With GPC (gel permeation chromatography), in the orthodichlorobenzene solvent, measure down at 140 ℃.
(5)MFR
10/MFR
2
With ASTM D-1238 is standard, the MFR when measuring 190 ℃ of following 10kg loads
10MFR during with the 2.16kg load
2, calculate the two ratio.Good fluidity when this ratio greatly just shows polymer melt, i.e. processibility height.
And the manufacturing of insulated line sample and evaluation are carried out as follows.
(6) breaking tenacity and elongation at break
With JIS K6301 is benchmark, and with the JIS3 dumbbell plate, at span 20mm, draw speed 200mm/ carries out tension test under dividing, and measures breaking tenacity and elongation at break.
(7) torsional rigid
With JIS K6745 is benchmark, uses the smart machine of Japanese Japan (strain) system Clash-Berg trier to measure torsional rigid under 23 ℃ of the temperature.
(8) resistance to marring
Use Tokyo Heng Jishe system Martens scratch hardness test machine, apply the load of cut pressure head 20g in the test piece of thickness 3mm, the trace width of cloth when working sample produces cut calculates its inverse and estimates.Evaluation of estimate is designated as zero more than or equal to 11, is designated as △ more than or equal to 10, less than 11, less than 10 be designated as *.
(9) crooked crazing surrender
Test piece one end of thickness 2mm is fixed, bent more than 120 degree to the center by the part of its relative the other end from the vertical 3cm in end, range estimation confirms to have or not crazing.No crazing is designated as zero, have crazing be designated as *.
Make ethene-butene-1 copolymer
Production Example 1
The modulation solvent solution
To two (1, the 3-dimethyl cyclopentadiene) zirconium dichloride that in the abundant metathetical glass flask of nitrogen, adds 0.63mg, add the toluene solution (Al of methylamino formic acid again; 0.13mmol/l) 1.57ml and toluene 2.43ml, make catalyst solution.
Make ethene-butene-1 copolymer a-1
1-butylene to feed 912ml hexane and 200ml in the stainless steel autocrave of 2 liters of the abundant metathetical volumes of nitrogen rises to 80 ℃ with system temperature.Then with ethene with the 0.9mmol triisobutyl aluminium and as mentioned above the modulation form 2.0ml (Zr, 0.0005mmol) catalyst solution, the beginning polymerization.With the continuous hydrogen supply of 70ml/h, and sustainable supply ethene, the maintenance stagnation pressure is 8.0kg/cm
2-G carries out polymerization in 30 minutes under 80 ℃.
Import small amount of ethanol to system, polyreaction is stopped, removing unreacting ethylene then.Resulting polymers is dropped in the excessive methyl alcohol, polymkeric substance is separated out.With polymer filtration, recovery, in one evening of drying under reduced pressure, obtain ethene-butene-1 copolymer.The proterties of gained ethene-butene-1 copolymer is as shown in table 1.
Table 1
| Ethene-butene-1 copolymer a-1 | |
| Multipolymer proterties density (kg/m 3) melt flow rate (MFR) Mw/Mn MFR 10/MFR 2.16 | 885 1.2 2.0 5.8 |
Production Example 2
The modulation of catalyst solution
Get the positive carbon of 18.4mg triphenyl (4 penta fluorophenyls) boric acid ester, add the dissolving of 5ml toluene, the toluene solution of furnishing concentration 0.004mM/ml.Get 1.8mg[dimethyl (TERTIARY BUTYL AMINE base) (tetramethyl--η
5-cyclopentadiene) silane] titanium dichloride, add the dissolving of 5ml toluene, the toluene solution of furnishing concentration 0.001mM/ml.When polymerization begins, get the positive carbon of triphenyl (4 penta fluorophenyls) boric acid ester toluene solution 0.38ml, [dimethyl (TERTIARY BUTYL AMINE base) (tetramethyl--η
5-cyclopentadiene) silane] titanium dichloride toluene solution 0.38ml, add dilution again and use toluene 4.24ml, the positive carbon of furnishing triphenyl (4 penta fluorophenyls) boric acid ester is scaled 0.002mM/L, [dimethyl (TERTIARY BUTYL AMINE base) (tetramethyl--η with B
5-cyclopentadiene) silane] titanium dichloride is scaled the toluene solution 5ml of 0.0005mM/L with Ti.
Make ethene-butene-1 copolymer a-2
Under 23 ℃, in the SUS of the band stirring rake of 1.5 liters of the abundant metathetical capacity of nitrogen system autocrave, feeding the 750ml heptane.In autocrave, one side makes the stirring rake rotation, and one side is cooled off with frozen water, and feeds 1-butylene 10g and 120ml hydrogen.Autocrave is heated to 100 ℃ again,, makes stagnation pressure reach 6KG with the ethene pressurization.When pressure in the autocrave reaches 6KG, be pressed into the 1.0mM/ml hexane solution of nitrogen with 1.0ml triisobutyl aluminium (TIBA).To modulate the catalyst solution 5ml that forms again as mentioned above and be pressed into autocrave, the beginning polymerization.Regulate the autocrave temperature then, temperature reached 100 ℃ in making in 5 minutes, and directly supplied with ethene, made pressure reach 6kg.After polymerization begins 5 minutes, in autocrave, import methyl alcohol 5ml, polyreaction is stopped, autocrave is taken off be depressed into normal atmosphere with pump.In reaction soln, add 3 liters of methyl alcohol while stirring.The polymkeric substance that will contain the gained solvent is dry under 130 ℃, 13 hours, 600torr, obtains ethene-butene-1 copolymer a-2 of 10g.The proterties of gained ethene-butene-1 copolymer is as shown in table 2.
Table 2
| Production Example 2: ethene-butene-1 copolymer a-2 | |
| Multipolymer proterties density (kg/m 3) melt flow rate (MFR) Mw/Mn MFR 10/MFR 2.16B value T αβ/T αα | 885 1.2 2.1 10.0 1.1 0.3 |
The modulation of modified by maleic acid anhydride graft ethene-butene-1 copolymer
Production Example 3
Above-mentioned ethene-butene-1 copolymer 10kg and maleic anhydride 50g and di-tert-butyl peroxide 3g are dissolved in the acetone of 50g and solution add in the Henschel mixing roll mixing.
Then the mixing thing of gained being dropped into screw rod from hopper directly is the single shaft forcing machine of 40mm, L/D=26.Extrude a strand material under 260 ℃ of resin temperatures, extrusion capacity 6kg/ hour, water-cooled is granulated, and obtains modified by maleic acid anhydride graft ethene-butene-1 copolymer.
With unreacted maleic anhydride acetone extraction in gained graft modification ethene-butene-1 copolymer, measure the maleic anhydride graft amount in this graft modification ethene-butene-1 copolymer, grafting amount result is 0.43 weight %.
Embodiment Y1-1, Y1-2, Y1-3, Y1-4, Y2, comparative example Y1-1, Y2-1, Y2-2
Embodiment Y1-1, Y1-2, Y1-3, Y1-4, Y2, comparative example Y1-1, Y2-1, Y2-2 is that the ethene-butene-1 copolymer a-2 that will be made by above-mentioned manufacture method is used as vinyl copolymer (A), magnesium hydroxide is used as metal hydroxides, to press the embodiment Y1-1 of the described grafting amount of table 3 his-and-hers watches 3 with maleic anhydride, Y1-2, Y1-3, Y1-4, Y2, comparative example Y1-1, Y2-1, the product of described unmodified multipolymer of Y2-2 and unmodified polyethylene modification is as the graft modification ethene based copolymer of unsaturated carboxylic acid or derivatives thereof, cooperate according to described weight %, in 190 ℃ of following melting mixing granulations of resin temperature, obtain thermoplastic resin composition's pellet with Banbury.Use this thermoplastic resin composition, utilize aforesaid method to estimate each rerum natura, the result is as shown in table 3.
And the described unmodified multipolymer of embodiment Y1-1, Y2 is the ethene-butene-1 copolymer a-1 that is made by aforesaid method.The described unmodified multipolymer of embodiment Y1-2 is the ethene-butene-1 copolymer a-2 that is made by aforesaid method.
Embodiment Z1～Z6, comparative example Z1～Z12
Press weight part shown in the table 4 with vinyl copolymer (Mitsui Chemicals, Inc's system, trade(brand)name Tafmer
TMA-1085, density 885kg/m
3, the MFR under 190 ℃, 2.16kg load is the 1.2g/10 branch), magnesium hydroxide, melamine cyanurea ester, tetramethylolmethane, zinc borate mix, with Banbury in 190 ℃ of following melting mixing granulations of resin temperature and the polymer composition pellet.
Use this polymer composition, melt extrude machine (Japanese Japan smart machine society system with being provided with electric wire coatings with mould, goods name Laboplast Mill), under the condition of 220 ℃ of die temperatures, screw speed 30rpm, extrusion capacity 1.6～1.8kg/h, the conductor (the about 1.35mm of external diameter) that is twisted into by the thick polymer composition of the 0.8mm annealed copper wire that to cover 7 bare wire diameters be 0.45mm on every side, being processed into diameter is the insulated line sample of 3.0mm.
Testing vertical flammability (VW-1)
Estimate the flame retardant resistance of the insulated hull of gained insulated line sample according to the VW-1 testing vertical flammability of above-mentioned UL specification defined.That is, as shown in Figure 1,17 inches long insulated line 2 test portions vertically are located in the chamber 1 of testing apparatus, from its lower end upwards 13 inches position paste kraft paper 3, below insulated line 2, place absorbent cotton 4.
With its bottom surface and insulated line 1 angulation is θ (fire retardancy test angle).
Then, light the burner 5 that is located at insulated line 2 the place aheads, make its flame shown in single-point line among the figure, with insulated line 2 be 70 ° angle touch apart from the electric wire lower end 3 inches top position 15 seconds, carry out this operation 5 times repeatedly, what seconds the flame of measuring after each insulated hull is lighted needs extinguish after the flame of burner 5 is removed, and writes down wherein the longest combustion time.
Carry out above-mentioned test 3 times, following three conditions (1) have 3 combustion times the longest all in 60 seconds when respectively testing; (2) do not cause kraft paper 3 to burn because of the insulated hull burning; (3) junk does not cause that the samples that absorbent cotton 4 burnings are all satisfied are evaluated as good flame resistance (qualified) under the burning, and the unsatisfied sample of arbitrary condition is evaluated as flame retardant resistance bad (defective).And be the ordering of carrying out flame retardant resistance, for estimating underproof sample, satisfy two be designated as (△) in above-mentioned 3 conditions, satisfy 1 be designated as (▲) in above-mentioned 3 conditions, all unsatisfied be designated as (*) in above-mentioned 3 conditions, to show difference, the result is as shown in table 4.
According to the flame retardant resistance ordering, increase foreskin thickness and be expected to make unacceptable product up to standard.Therefore, (△) product can reach qualified level with less thickening, and the foreskin thickness of (▲), (*) need thicken more.
Embodiment Z7～Z9, comparative example Z13～Z15
Press weight part shown in the table 5 with Tafmer
TMA-1085, magnesium hydroxide, melamine cyanurea ester, tetramethylolmethane, zinc borate mix, and in 190 ℃ of following melting mixing granulations of resin temperature, obtain the polymer composition pellet with Banbury.
Use this polymer composition, melt extrude machine (Japanese Japan smart machine society system with being provided with electric wire coatings with mould, goods name Laboplast Mill), under the condition of 220 ℃ of die temperatures, screw speed 30rpm, extrusion capacity 1.6～1.8kg/h, the conductor that the annealed copper wire that is 1.6mm at 7 bare wire diameters is twisted into (the about 4.8mm of external diameter) covers the thick polymer composition of 1.0mm on every side, and being processed into diameter is the insulated line sample of 6.8mm.Implement testing vertical flammability (VW-1) same as above with the gained sample again, the result is as shown in table 5.
Table 5 conductor: bare wire number/bare wire footpath mm=7/1.6, external diameter=4.8mm, processing back diameter=6.8mm
| Comparative example Z13 | Comparative example Z14 | Comparative example Z15 | Embodiment Z7 | Embodiment Z8 | Embodiment Z9 | |
| A-1085 | 100 | 100 | 100 | 100 | 100 | 100 |
| Mg(OH)2 | 150 | 150 | 150 | 150 | 150 | 150 |
| The melamine cyanurea ester | 20 | 25 | 20 | 15 | ||
| Tetramethylolmethane | 20 | 15 | 20 | 25 | ||
| Zinc borate | 20 | 20 | ||||
| Testing vertical flammability (VW-1) | Defective | Defective | Defective | Defective | Qualified | Qualified |
| The flame retardant resistance ordering | × | ▲ | ▲ | △ | — | — |
1) numerical value unit is a weight part, 2) this composition is represented not cooperate in table hollow hurdle
Industrial applicability
The present invention can provide and demonstrate excellent fracture strength, elongation at break, and has thermoplastic resin composition (Y) and the formed body thereof of excellent flexible, flexibility, resistance to marring, counter-bending crazing surrender property.
Because thermoplastic resin composition of the present invention (Y) has above-mentioned effect, so be applicable to the various formed bodys of purposes such as electric wire foreskin, tape, film, fire retardant jacket, pipeline, blow molded article, flame wallpaper. Be particularly useful for trunking and wire insulator isoelectric line and coat purposes.
The present invention can provide polymer composition (Z) and the formed body thereof with high flame retardant effect.
Because polymer composition of the present invention (Z) has above-mentioned effect, so be applicable to the various formed bodys of purposes such as electric wire foreskin, tape, film, fire retardant jacket, pipeline, blow molded article, flame wallpaper. Be particularly useful for trunking and wire insulator isoelectric line and coat purposes.
Claims (6)
1. a polymer composition Z is characterized in that, is 100 weight parts with at least a kind of polymer AA that is selected among thermoplastic polymer aa1 and the thermosetting polymer aa2, contains each composition of following ratio:
Metal hydroxides BB:50～250 weight parts;
Be selected from trimeric cyanamide, cyanurodiamide, melam, benzene guanamine, acetyl guanamine, phthaloyl two guanamines, melamine cyanurea ester, melamine pyrophosphate, butyryl two guanamines, norbornane two guanamines, methylene radical two (trimeric cyanamide), ethylene (trimeric cyanamide), trimethylene two (trimeric cyanamide), tetramethylene two (trimeric cyanamide), hexamethylene two (trimeric cyanamide) and 1, triazine based compound E:0.1～40 weight parts in the 3-hexene two (trimeric cyanamide);
Polyvalent alcohol F:0.1～40 weight parts.
2. polymer composition Z as claimed in claim 1 is characterized in that, thermoplastic polymer aa1 is an ethylene-based polymer.
3. polymer composition Z as claimed in claim 1 or 2 is characterized in that, the weight ratio of triazine based compound E and polyvalent alcohol F in the scope of following formula,
F/E≥1。
4. by the formed body of the Z-shaped one-tenth of each described polymer composition of claim 1～3.
5. formed body as claimed in claim 4 is characterized in that, described formed body is the isolator of electric wire.
6. the described formed body of claim 4 is characterized in that, described formed body is the sheath of electric wire.
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