CN104119674A - Polyamide composition and preparation method thereof - Google Patents

Polyamide composition and preparation method thereof Download PDF

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Publication number
CN104119674A
CN104119674A CN201310146141.XA CN201310146141A CN104119674A CN 104119674 A CN104119674 A CN 104119674A CN 201310146141 A CN201310146141 A CN 201310146141A CN 104119674 A CN104119674 A CN 104119674A
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composition
accounts
daiamid composition
polyamide
carbon black
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Inventor
胡永佳
李旭
望月克彦
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Toray Fibers and Textiles Research Laboratories China Co Ltd
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Toray Fibers and Textiles Research Laboratories China Co Ltd
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Priority to CN201310146141.XA priority Critical patent/CN104119674A/en
Publication of CN104119674A publication Critical patent/CN104119674A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477—Six-membered rings
    • C08K5/3492—Triazines
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/90—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/12—Applications used for fibers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a polyamide composition and a preparation method thereof. The polyamide composition is prepared by slicing and blending the main materials of a melamine compound with melting point of 100 to 300 DEG C, carbon black and polyamide, wherein the melamine compound accounts for 2-20 wt% of polyamide, and the carbon black accounts for 0.5-5 wt% of the polyamide composition. The polyamide composition provided by present invention has excellent flame retardant performance, besides the melamine compound uniformly disperses in the composition; and the composition has good flame retardance stability, and can be used in the fields of spinning and film.

Description

A kind of daiamid composition and preparation method thereof
Technical field
The present invention relates to a kind of daiamid composition that contains trimeric cyanamide compounds and carbon black and preparation method thereof.
Background technology
The material that polymeric amide is high as intensity, wear resistance is good, weathering resistance is good is subject to applying more and more widely in industrial circle and daily life.But because polymeric amide is the flammable polymkeric substance of a kind of meltbility, once contact burning things which may cause a fire disaster is easy to lead to fire, therefore its application has also been subject to certain restriction.
Research about the polymeric amide with flame retardant effect gets more and more, the method of at present polymeric amide being carried out to fire-retardantization mainly contains three kinds: the first is copolymerization method, by introduce aromatic ring or fragrant heterocycle in the macromolecular chain of polymeric amide, increase intensity and the force of cohesion of macromole chain rigidity and macromolecular chain, thereby improve the thermostability of polymeric amide; The second is blending method, makes polymeric amide have flame retardant effect by adding fire retardant to carry out blend in polyamide melt; The third is to utilize fire-retardant medicament to carry out fire-retardant finish to polymeric amide.Because the cost of copolymerization method is high, the flame retardant effect of fire-retardant medicament finishing method again can not be lasting, and the many of now research is blending method.The method that nylon 6, trimeric cyanamide urate, retardant synergist, oxidation inhibitor is mixed to get by weight ratio in high-speed mixer to fire-retardant nylon is disclosed in Chinese invention patent CN200710011841.2.But trimeric cyanamide urate is one very easily there is the compound of reuniting, and adds in polymeric amide and there will be and disperse inhomogeneous phenomenon, and then affect fire-retardant stability and the spinning property of Flameproof polyamide.
Summary of the invention
The object of the present invention is to provide a kind of daiamid composition with excellent and stable flame retardant properties, said composition is obtained by polymeric amide, trimeric cyanamide compounds and carbon black.
Technical solution of the present invention is:
A kind of daiamid composition, contains in said composition as shown in Equation 1, fusing point is trimeric cyanamide compounds and the carbon black of 100～300 DEG C; Wherein trimeric cyanamide compounds accounts for 2～20wt% of daiamid composition, and carbon black accounts for 0.5～5wt% of daiamid composition;
formula 1
In formula, R 1, R 2, R 3be respectively amino, the alkyl of carbonatoms 1～20, alkoxyl group, alkylamino radical, or the aryl of carbonatoms 6～30, aryloxy, aryl amine.
Now have trimeric cyanamide, melamine cyanurate etc. as spinning with the fire retardant of Flameproof polyamide, this based flame retardant does not generally all have fusing point, and the form mainly with particle in polymeric amide exists.And the bad dispersibility of this based flame retardant, this has greatly affected spinning workability and the fire-retardant stability of polymeric amide, there will be the phenomenon that flame retardant effect difference is large in the time of the flame retardant resistance of sampling and testing polymeric amide.
Fire retardant used in the present invention be as shown in Equation 1 and fusing point be the trimeric cyanamide compounds of 100～300 DEG C, trimeric cyanamide compounds and polymeric amide that this kind has fusing point have good consistency, use this based flame retardant in the flame retardant resistance that improves polymeric amide, can also greatly improve the spinning property of polymeric amide.In order to make polymeric amide obtain better fire-retardant stability and spinning property, preferentially select as shown in Equation 1 and fusing point be the trimeric cyanamide compounds of 130～280 DEG C.
Concrete can enumerate have 4, 6-dimethoxy-1, 3, 5-triazine-2-amine, 2, 4-diamino-6-Ren Ji-1, 3, 5-triazine, 2, 4, 6-trimethoxy-1, 3, 5-triazine, 2-amino-4-dimethoxy-1, 3, 5-triazine, 2-cyclopropyl amino-4, 6-diaminostilbene, 3, 5-triazine, 2-methyl-4-methylamino-6-methoxyl group-1, 3, 5-triazine, 4-methoxyl group-6-methyl isophthalic acid, 3, 5-triazine-2-amine, 4-oxyethyl group-6-methyl isophthalic acid, 3, 5-triazine-2-amine, N-18-alkyl-1, 3, 5-triazine-2, 4, 6-triamine, benzoguanamine, methyl substituted melamine etc., wherein preferably 2, 4, 6-trimethoxy-1, 3, 5-triazine, 2-cyclopropyl amino-4, 6-diaminostilbene, 3, 5-triazine, 2, 4-diamino-6-Ren Ji-1, 3, 5-triazine, benzoguanamine or methyl substituted melamine, most preferably benzoguanamine or methyl substituted melamine.
In daiamid composition of the present invention, the content of trimeric cyanamide compounds is 2～20wt%.If its too high levels, the consistency of trimeric cyanamide compounds and polymeric amide reduces, and affects the spinning property of daiamid composition; If its content is too low, the flame retardant effect of daiamid composition is bad.Preferably 3～15wt% of the content of trimeric cyanamide compounds in daiamid composition.
In daiamid composition of the present invention, also contain carbon black, its content is the 0.5～5wt% that is equivalent to composition weight.In combustion processes, carbon black can form carbon-coating on daiamid composition surface, can make composition and flame keep apart on the one hand, stops further carrying out of burning; Carbon-coating also has heat-absorbing action on the other hand, can reduce the heat of oxidation of composition self, reaches the fire-retardant object of solid phase; Moreover carbon black produces the difficult combustion gas body of carbonic acid gas in when burning, can dilution oxygen concentration, reduce the intensity of flame, also play the fire-retardant effect of certain gas phase.If the content of carbon black is very little in composition, when burning, be difficult for forming carbon-coating on daiamid composition surface, do not have the effect of fire-retardant enhancing; If the content of carbon black is too many in composition, because carbon black itself is inflammable substance, excessive carbon black can promote the burning of daiamid composition, reduces its flame retardant properties.Preferably the content of carbon black is 0.75～2wt%.
Above-mentioned carbon black can be the carbon black in various sources, as channel black, warmly black, dim, furnace black and acetylene black, and wherein preferably furnace black or acetylene black.
Polymeric amide of the present invention comprises polyamide 6, polyamide 66 or the above two alloy, preferred polyamide 6 or polyamide 66.
The invention also discloses the production method of this daiamid composition, by polymeric amide section, as shown in Equation 1 and fusing point be that the trimeric cyanamide compounds of 100～300 DEG C and carbon black drop into blending extrusion in twin screw extruder and obtain daiamid composition, wherein trimeric cyanamide compounds accounts for 2～20wt% of daiamid composition, the addition of carbon black accounts for 0.5～5wt% of composition, and all the other are polymeric amide section.
In the time of blending extrusion, preferably setting the each district of twin screw extruder temperature is 35～280 DEG C, and screw speed is 50～250rpm, and dicing machine rotating speed is 50～150rpm.
Daiamid composition of the present invention not only has excellent flame retardant properties, and trimeric cyanamide compounds being uniformly dispersed in composition, and the fire-retardant good stability of composition, can be used for the field such as spinning, film.
Testing method related in the present invention is described as follows:
(1) evaluation method of spinning property
By after 10Kg chip drying, by subminiature spinning, pass through the filter screen of 15 μ m with the speed that spues of 10g/min, start after charging, record start is considered pressure for P 1, after whole section sample introductions are complete, record final pressure P 2, characterize the good job of spinning property by considering pressure differential deltap P,
ΔP＝P 2－P 1，
Consider pressure differential deltap P less, illustrate that spinning property is better, on the contrary poorer.
(2) assay of carbon black
10g sample is put into 500ml phenol/ethanolic soln, and long-time stirring guarantees that sample can fully dissolve.High-speed centrifuge for mixed solution (18000rpm) after dissolving carries out centrifugation.Product after separation claims to obtain weight M after being fully dried 1, then calculate the content of carbon black,
?。
(3) mensuration of trimeric cyanamide kind compound content
Adopt type organic hydrocarbon nitrogen oxygen element sulphur analysis-e/or determining in U.S. CE-440 to go out total nitrogen element content W of determinand, the nitrogen element content of known nylon is W 1, add trimeric cyanamide compounds nitrogen content be W 2, in every 100g blend, contain carbon black a g
。
(4) evaluation method of flame retardant properties
Get 10 daiamid compositions, measure its flame retardant resistance according to standard JIS 1091 D:1999 methods, result is got the mean value of 10 times.
(5) evaluation method of flame retardant properties stability
Get 10 daiamid composition battens, carry out respectively flame retardant test and record the scorching number X that return of connecing of every batten by JIS 1091 D methods i, calculate the scorching number mean value X that returns of connecing of 10 samples simultaneously, finally connect by calculating the fire-retardant stability that scorching standard deviation of returning number represents daiamid composition,
，
In the time that standard deviation value is 0, illustrate that the flame retardant properties of daiamid composition is very stable; Standard deviation value is larger, illustrates that its flame retardant properties is more unstable.
Embodiment
Below in conjunction with embodiment, content of the present invention is described, but the present invention is not limited to the listed content of embodiment.
Embodiment 1
First polyamide 6 section is placed on to hot air drier, under 80 DEG C of conditions, dry 3 hours; Put into again vacuum drying oven, under 110 DEG C of conditions, dry 12-36 hour, the water-content of dried section is below 100ppm; By above-mentioned dried section and methyl substituted melamine, acetylene black is put in twin screw extruder after evenly mixing together, and the two blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 96wt% of composition, and methyl substituted melamine accounts for the 3wt% of composition, and the addition of acetylene black accounts for the 1wt% of composition.
Miscible granulation process parameters is: the each district of twin screw extruder temperature, a district: 35 DEG C; 2nd district: 100 DEG C; 3rd district: 220 DEG C; 4th district: 230 DEG C; 5th district: 230 DEG C; 6th district: 230 DEG C; 7th district: 215 DEG C; 8th district: 215 DEG C; 9th district: 215 DEG C; Tenth district: 220 DEG C; Shi Yi district: 240 DEG C; Head temperature: 250 DEG C; Screw speed: 200rpm; After water-bath is cooling, be to cut into grain under 100rpm pelletizing speed at dicing machine rotating speed.
DCO data see attached list.
Embodiment 2
By polyamide 6 section, methyl substituted melamine is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 92wt% of composition, and methyl substituted melamine accounts for the 7wt% of composition; The addition of acetylene black accounts for the 1wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 3
By polyamide 6 section, methyl substituted melamine is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 87wt% of composition, and methyl substituted melamine accounts for the 12wt% of composition; The addition of acetylene black accounts for the 1wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 4
By polyamide 6 section, methyl substituted melamine is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 79wt% of composition, and methyl substituted melamine accounts for the 20wt% of composition; The addition of acetylene black accounts for the 1wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 5
By polyamide 6 section, methyl substituted melamine is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 89.9wt% of composition, and methyl substituted melamine accounts for the 10wt% of composition; The addition of acetylene black accounts for the 0.1wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 6
By polyamide 6 section, methyl substituted melamine is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 87.5wt% of composition, and methyl substituted melamine accounts for the 12wt% of composition; The addition of acetylene black accounts for the 0.5wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 7
By polyamide 6 section, methyl substituted melamine is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 88wt% of composition, and methyl substituted melamine accounts for the 11wt% of composition; The addition of acetylene black accounts for the 1wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 8
By polyamide 6 section, methyl substituted melamine is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 85wt% of composition, and methyl substituted melamine accounts for the 13wt% of composition; The addition of acetylene black accounts for the 2wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 9
By polyamide 6 section, methyl substituted melamine is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 84wt% of composition, and methyl substituted melamine accounts for the 12wt% of composition; The addition of acetylene black accounts for the 4wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 10
By polyamide 6 section, methyl substituted melamine is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 89wt% of composition, and methyl substituted melamine accounts for the 10wt% of composition; The addition of acetylene black accounts for the 1wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 11
By polyamide 6 section, benzoguanamine is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 88.5wt% of composition, and benzoguanamine accounts for the 11wt% of composition; The addition of acetylene black accounts for the 0.5wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 12
By polyamide 6 section, benzoguanamine is put in twin screw extruder together with after the even mixing of furnace black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 86wt% of composition, and benzoguanamine accounts for the 13wt% of composition; The addition of acetylene black accounts for the 1wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 13
By polyamide 6 section, benzoguanamine is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 88wt% of composition, and benzoguanamine accounts for the 10wt% of composition; The addition of acetylene black accounts for the 2wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 14
By polyamide 6 section, benzoguanamine is put in twin screw extruder together with after the even mixing of furnace black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 87wt% of composition, and benzoguanamine accounts for the 12wt% of composition; The addition of acetylene black accounts for the 1wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 15
By polyamide 6 section, 2-cyclopropyl amino-4,6-diamino-1,3,5-triazines is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 88wt% of composition, 2-cyclopropyl amino-4, and 6-diamino-1,3,5-triazines accounts for the 11wt% of composition; The addition of acetylene black accounts for the 1wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 16
By polyamide 6 section, 2,4-diamino-6-Ren Ji-1,3,5-triazines is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 89wt% of composition, and 2,4-diamino-6-Ren Ji-1,3,5-triazines accounts for the 10wt% of composition; The addition of acetylene black accounts for the 1wt% of composition, and other are with embodiment 1.DCO data see attached list.
Embodiment 17
By polyamide 6 section, 2,4,6-trimethoxy-1,3,5-triazines is put in twin screw extruder together with after the even mixing of acetylene black, and three's blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 89wt% of composition, and 2,4,6-trimethoxy-1,3,5-triazines accounts for the 10wt% of composition; The addition of acetylene black accounts for the 1wt% of composition, and other are with embodiment 1.DCO data see attached list.
Comparative example 1
After polyamide 6 section, melamine cyanurate are evenly mixed, put in twin screw extruder, the two blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 90wt% of composition, and the addition of melamine cyanurate accounts for the 10wt% of composition.Other are with embodiment 1.DCO data see attached list.
Comparative example 2
By polyamide 6 section, melamine cyanurate, acetylene black is put in twin screw extruder after evenly mixing, and the two blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 89wt% of composition, and the addition of melamine cyanurate accounts for the 10wt% of composition, and the addition of acetylene black accounts for 1% of composition.Other are with embodiment 1.DCO data see attached list.
Comparative example 3
After polyamide 6 section, methyl substituted melamine are evenly mixed, put in twin screw extruder, the two blending extrusion obtains daiamid composition.Wherein, the addition of polyamide 6 section accounts for the 92wt% of composition, and the addition of methyl substituted melamine accounts for the 8wt% of composition.Other are with embodiment 1.DCO data see attached list.
Design parameter and the physicals of in embodiment and comparative example, preparing daiamid composition see attached list.

Claims (9)

1. a daiamid composition, is characterized in that: in said composition, contain as shown in Equation 1, fusing point is trimeric cyanamide compounds and the carbon black of 100～300 DEG C; Wherein trimeric cyanamide compounds accounts for 2～20wt% of daiamid composition, and carbon black accounts for 0.5～5wt% of daiamid composition;
formula 1
In formula, R 1, R 2, R 3be respectively amino, the alkyl of carbonatoms 1～20, alkoxyl group, alkylamino radical, or the aryl of carbonatoms 6～30, aryloxy, aryl amine.
2. daiamid composition according to claim 1, is characterized in that: described trimeric cyanamide compounds is benzoguanamine or methyl substituted melamine.
3. daiamid composition according to claim 1 and 2, is characterized in that: the fusing point of described trimeric cyanamide compounds is 130～280 DEG C.
4. daiamid composition according to claim 1 and 2, is characterized in that: described trimeric cyanamide compounds accounts for 3～15wt% of daiamid composition.
5. daiamid composition according to claim 1, is characterized in that: described carbon black is furnace black or acetylene black.
6. according to daiamid composition described in claim 1 or 5, it is characterized in that: described carbon black accounts for 0.75～2wt% of daiamid composition.
7. daiamid composition according to claim 1, is characterized in that: described polymeric amide is polyamide 6 or polyamide 66.
8. the preparation method of daiamid composition described in a claim 1, it is characterized in that: by polymeric amide section, as shown in Equation 1 and fusing point be that the trimeric cyanamide compounds of 100～300 DEG C and carbon black drop into blending extrusion in twin screw extruder and obtain daiamid composition, wherein trimeric cyanamide compounds accounts for 2～20wt% of daiamid composition, and the addition of carbon black accounts for 0.5～5wt% of daiamid composition.
9. the preparation method of daiamid composition according to claim 8, is characterized in that: the each district of twin screw extruder temperature is 35～250 DEG C, and screw speed is 50～250rpm, and dicing machine rotating speed is 50～150rpm.
CN201310146141.XA 2013-04-24 2013-04-24 Polyamide composition and preparation method thereof Pending CN104119674A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105949757A (en) * 2016-05-24 2016-09-21 上海捷棉新材料科技有限公司 Halogen-free polyamide flame-retardant composition membrane and manufacturing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105949757A (en) * 2016-05-24 2016-09-21 上海捷棉新材料科技有限公司 Halogen-free polyamide flame-retardant composition membrane and manufacturing method thereof

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Application publication date: 20141029