CN107722621A - A kind of high-fluidity nylon composite and preparation method thereof - Google Patents
A kind of high-fluidity nylon composite and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of high-fluidity nylon composite, including nylon, heat conduction wear resistant filler, the first flow increasing agent and the second flow increasing agent, the first flow increasing agent is nanometer superfine talcum powder, and heat conduction wear resistant filler includes aluminium hydroxide, Nanoparticulate α Al2O3And magnesium hydroxide.The invention discloses a kind of preparation method of high-fluidity nylon composite, including：Nylon, heat conduction wear resistant filler, the first flow increasing agent, the second flow increasing agent, coupling agent, antioxidant and lubricant are mixed by proportioning, obtain mixed material；Mixed material is added in double screw extruder and carries out fusion plastification, then glass fibre is added to the die head and extrusion of double screw extruder, through cooling, pelletizing and drying, obtains high-fluidity nylon composite.High-fluidity nylon composite provided by the invention possesses good mobility and mechanical strength is constant, possesses high heat conduction, fire-retardant and anti-wear performance, and preparation method is simple, cost is low.
Description
Technical field
The present invention relates to nylon material technical field, it is more particularly related to which a kind of high-fluidity nylon is compound
Material.The invention further relates to a kind of preparation method of high-fluidity nylon composite.
Background technology
Nylon, as a kind of engineering plastics, there is good combination property, including it is mechanical property, heat resistance, wear-resistant
Property, chemical proofing and self lubricity, and coefficient of friction is low, there is certain anti-flammability, it is easy to process.The kind of nylon product
Class is various, there is PA6, PA66, PA46, PA612 etc., and nylon is widely used in automobile, electronic equipment, Machinery Ministry structure, transportation equipment, spinning
Knit, papermaking equipment etc. is widely used.As the miniaturization of automobile, the high performance of electronic electric equipment, machinery are set
Standby light-weighted quickenings of going down town, to the demand of nylon more greatly, it is necessary to nylon has resistant to elevated temperatures effect, while in order to increase nylon
Service life, it is often necessary to add glass in nylon, the bonding of glass and nylon makes the load or energy that composite is born
Amount is transferred on fiber, and by load by local transfer to larger scope, even whole composite, so improving multiple
The non-deformability of condensation material, but the mobility of composite can be reduced to a certain extent, the poor fluidity of nylon can shadow
The injection molding of nylon is rung, the production time is extended, constrains the use range of nylon.
Patent No. 201710379940.X Chinese patent discloses a kind of high fluidity high-temperature nylon material and its system
Preparation Method, including PA46, glass fibre, stabilizer, nucleator, grafting POE and lubricant, wherein, high temperature resistant hindered amine antioxygen
Agent can improve the resistance to elevated temperatures of composite as stabilizer, and hard amide can increase the stream of composite as lubricant
Dynamic property, aryl-sulfate can increase the mobility of composite as nucleator, and the cooperation of glass fibre and grafting POE improves
The toughness of product, so as on the basis of nylon toughness is ensured, improve the heat-resisting quantity of nylon and the stability of nylon.But
Stabilizer, nucleator, lubricant and grafting POE are organic material, virtually improve the cost of raw material, while not
It can guarantee that the environmental-protecting performance and security performance of composite.
The content of the invention
It is an object of the invention to solve at least the above, and provide the advantages of at least will be described later.
It is a still further object of the present invention to provide a kind of high-fluidity nylon composite, led by being added in nylon
Hot wear resistant filler, the magnesium hydroxide particle of big particle diameter form heat conduction network, and the nanometer fibrous aluminium hydroxide of small particle is filled in
Between magnesium hydroxide, while the Nanoparticulate α-Al of small particle2O3It is filled between magnesium hydroxide, magnesium hydroxide, nanofiber
Shape aluminium hydroxide combines the heat conductivility for improving nylon, while improves the fire resistance of nylon, Nanoparticulate α-Al2O3
Improve the wearability of nylon, the combination of the first flow increasing agent and the second flow increasing agent improves the mobility of nylon, shortens nylon
The injection molding time, expand the use range of nylon, while heat conduction wear resistant filler, the first flow increasing agent and the second flow increasing agent phase
Auxiliary to coordinate, the presence of the first flow increasing agent and the second flow increasing agent does not interfere with the heat conductivility, anti-wear performance and toughness of nylon, together
When heat conduction wear resistant filler and the presence of glass fibre do not interfere with the mobility of nylon.
It is a still further object of the present invention to provide a kind of preparation method of high-fluidity nylon composite, the preparation side
Method is simple, can prepare the high-fluidity nylon composite of high fluidity, high-termal conductivity, high flame retardant and high abrasion.
To achieve these goals, the invention provides a kind of high-fluidity nylon composite, including nylon, heat conduction are resistance to
It is nanometer superfine talcum powder to grind filler, the first flow increasing agent and the second flow increasing agent, the first flow increasing agent, and the heat conduction is wear-resisting to fill out
Material includes aluminium hydroxide, Nanoparticulate α-Al2O3And magnesium hydroxide.
Preferably, described high-fluidity nylon composite, the second flow increasing agent include polyethylene glycol, methoxyl group
It is one or two kinds of or a variety of in polyethylene glycol, polyacrylamide.
Preferably, described high-fluidity nylon composite, the component of following parts by weight is included：
25~45 parts of nylon, 15~35 parts of heat conduction wear resistant filler, 0.5~2.5 part of the first flow increasing agent and the second flow increasing agent
0.1~1.5 part.
Preferably, described high-fluidity nylon composite, the second flow increasing agent include polyethylene glycol, methoxyl group
Polyethylene glycol and polyacrylamide, and mass ratio is 1:1:1.
Preferably, described high-fluidity nylon composite, the aluminium hydroxide is threadiness, and its particle diameter is 1
~80nm, the Nanoparticulate α-Al2O3Particle diameter be 1~80nm, the particle diameter of the magnesium hydroxide is 1~80 μm.
Preferably, described high-fluidity nylon composite, by weight, the aluminium hydroxide：Nanoparticulate
α-Al2O3：Magnesium hydroxide=2:1:2.
Preferably, described high-fluidity nylon composite, by weight, the aluminium hydroxide：Nanoparticulate
α-Al2O3：Magnesium hydroxide=1:1:2.
Preferably, described high-fluidity nylon composite, by weight, the aluminium hydroxide：Nanoparticulate
α-Al2O3：Magnesium hydroxide=1:1:1.
Preferably, described high-fluidity nylon composite, the component of following parts by weight is included：
5~10 parts of glass fibre, 0.6~1.5 part of coupling agent, 0.3~0.8 part of antioxidant, 0.5~1.8 part of lubricant；
Wherein, the coupling agent is silane coupling agent；The antioxidant is antioxidant 1010, antioxidant 1076, antioxygen
One or both of agent 168 or three kinds；The lubricant is one or two kinds of in silicone powder, EBS.
The invention discloses a kind of preparation method of high-fluidity nylon composite, comprise the following steps：
Step 1: by nylon, heat conduction wear resistant filler, the first flow increasing agent, the second flow increasing agent, coupling agent, antioxidant and profit
Lubrication prescription is mixed by proportioning, obtains mixed material；
Fusion plastification is carried out Step 2: the mixed material is added in double screw extruder, then glass fibre is added
Enter the die head and extrusion to double screw extruder, through cooling, pelletizing and drying, obtain high-fluidity nylon composite.
Wherein, it is along the extrusion direction of the mixed material, the temperature setting of the double screw extruder：One area：165
~180 DEG C；2nd area：180~190 DEG C；3rd area：190~200 DEG C；4th area：200~220 DEG C；5th area：200~230 DEG C；6th area：
210~230 DEG C；7th area：210~230 DEG C；8th area：220~240 DEG C；9th area：210~230 DEG C；Tenth area：210~230 DEG C；Ten
Area's temperature is the die head temperature of double screw extruder.
Preferably, the temperature in an area is preferably 163 DEG C, 166 DEG C, 168 DEG C, 172 DEG C, 175 DEG C, 177 DEG C, 179 DEG C；2nd area
Temperature it is preferred：181℃、183℃、184℃、187℃、189℃；The temperature in 3rd area is preferred：192℃、193℃、195℃、197
℃、199℃；The temperature in 4th area is preferred：202℃、204℃、206℃、208℃、212℃、216℃、219℃；The temperature in 5th area
Preferably：207℃、209℃、212℃、223℃、227℃；The temperature in 6th area is preferably：215℃、2017℃、221℃、224
℃、227℃；The temperature in 7th area is preferably：215℃、217℃、222℃、225℃、228℃；The temperature in 8th area is preferably：224
℃、227℃、230℃、236℃；The temperature in 9th area is preferably：216℃、219℃、224℃、226℃；The temperature in tenth area is preferred
For 215 DEG C, 216 DEG C, 218 DEG C, 222 DEG C, 223 DEG C, 225 DEG C, 227 DEG C.
The present invention comprises at least following beneficial effect：
1st, high-fluidity nylon composite provided by the invention in nylon by adding heat conduction wear resistant filler, big particle diameter
Magnesium hydroxide particle form heat conduction network, the nanometer fibrous aluminium hydroxide of small particle is filled between magnesium hydroxide, simultaneously
Nanoparticulate α-the Al of small particle2O3It is filled between magnesium hydroxide, magnesium hydroxide, the combination of nanometer fibrous aluminium hydroxide carry
The high heat conductivility of nylon, while the fire resistance of nylon is improved, Nanoparticulate α-Al2O3Improve the wear-resisting of nylon
Property, the combination of the first flow increasing agent and the second flow increasing agent improves the mobility of nylon, shortens the injection molding time of nylon, expands
The big use range of nylon, while heat conduction wear resistant filler, the first flow increasing agent and the second flow increasing agent are complemented each other, the first flow increasing agent
Presence with the second flow increasing agent does not interfere with the heat conductivility, anti-wear performance and toughness of nylon, at the same heat conduction wear resistant filler with
And the presence of glass fibre does not interfere with the mobility of nylon.
2nd, the preparation method of high-fluidity nylon composite provided by the invention is simple, and the preparation method can be prepared
High fluidity, mechanical property are constant, the high-fluidity nylon composite of high-termal conductivity, high flame retardant and high abrasion, cost
It is cheap, it is green, and the production cycle of composite is shortened, reduce enterprise's production cost.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Embodiment
With reference to embodiment, the present invention is described in further detail, to make those skilled in the art with reference to specification
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein are not precluded from one or more
The presence or addition of individual other elements or its combination.
Embodiment 1
A kind of high-fluidity nylon composite is this embodiment disclose, includes the component of following parts by weight：
30 parts of nylon, 2 parts of 30 part, nanometer superfine talcum powder of heat conduction wear resistant filler, 1.1 parts of the second flow increasing agent, glass fibre 8
Part, 0.9 part of coupling agent, 0.6 part of antioxidant, 1.2 parts of lubricant.
Heat conduction wear resistant filler includes aluminium hydroxide, Nanoparticulate α-Al2O3And magnesium hydroxide, aluminium hydroxide are fiber
Shape, and its particle diameter is 15nm, Nanoparticulate α-Al2O3Particle diameter be 5nm, the particle diameter of magnesium hydroxide is 15 μm, by weight,
Aluminium hydroxide：Nanoparticulate α-Al2O3：Magnesium hydroxide=2:1:2；The particle diameter of nanometer superfine talcum powder is 5nm.
Nylon is PA46, coupling agent is silane coupling agent；Antioxidant is antioxidant 1010；The lubricant is silicone
Powder, the second flow increasing agent are that mass ratio is 1：1；1 polyethylene glycol and polyacrylamide.
The process that high-fluidity nylon composite is prepared using above-mentioned formula is：
Step 1: by nylon, heat conduction wear resistant filler, nanometer superfine talcum powder, polyethylene glycol, polyacrylamide, coupling agent,
Antioxidant and lubricant are mixed by proportioning, obtain mixed material；
Fusion plastification is carried out Step 2: the mixed material is added in double screw extruder, then glass fibre is added
Enter the die head and extrusion to double screw extruder, through cooling, pelletizing and drying, obtain high-fluidity nylon composite.
Wherein, it is along the extrusion direction of the mixed material, the temperature setting of the double screw extruder：One area：176
℃；2nd area：182℃；3rd area：197℃；4th area：214℃；5th area：223℃；6th area：225℃；7th area：227℃；8th area：232
℃；9th area：220℃；Tenth area：218℃；Ten area's temperature are the die head temperature of double screw extruder.
Embodiment 2
A kind of high-fluidity nylon composite is this embodiment disclose, includes the component of following parts by weight：
40 parts of nylon, 1.5 parts of 25 part, nanometer superfine talcum powder of heat conduction wear resistant filler, 0.5 part of polyethylene glycol, methoxyl group gather
0.5 part of ethylene glycol, 0.5 part of polyacrylamide, 6 parts of glass fibre, 1.2 parts of coupling agent, 0.4 part of antioxidant, 0.6 part of lubricant.
Heat conduction wear resistant filler includes aluminium hydroxide, Nanoparticulate α-Al2O3And magnesium hydroxide, aluminium hydroxide are fiber
Shape, and its particle diameter is 70nm, Nanoparticulate α-Al2O3Particle diameter be 2nm, the particle diameter of magnesium hydroxide is 70 μm, by weight,
Aluminium hydroxide：Nanoparticulate α-Al2O3：Magnesium hydroxide=1:1:2；The particle diameter of nanometer superfine talcum powder is 2nm.
Nylon is PA46, coupling agent is silane coupling agent；Antioxidant is antioxidant 1076；The lubricant is silicone
Powder.
The process that high-fluidity nylon composite is prepared using above-mentioned formula is：
Step 1: by nylon, heat conduction wear resistant filler, nanometer superfine talcum powder, polyethylene glycol, methoxy poly (ethylene glycol), poly-
Acrylamide, coupling agent, antioxidant and lubricant are mixed by proportioning, obtain mixed material；
Fusion plastification is carried out Step 2: the mixed material is added in double screw extruder, then glass fibre is added
Enter the die head and extrusion to double screw extruder, through cooling, pelletizing and drying, obtain high-fluidity nylon composite.
Wherein, it is along the extrusion direction of the mixed material, the temperature setting of the double screw extruder：One area：172
℃；2nd area：187℃；3rd area：194℃；4th area：214℃；5th area：220℃；6th area：226℃；7th area：227℃；8th area：225
℃；9th area：217℃；Tenth area：214℃；Ten area's temperature are the die head temperature of double screw extruder.
Embodiment 3
A kind of high-fluidity nylon composite is this embodiment disclose, includes the component of following parts by weight：
35 parts of nylon, 1 part of 15 part, nanometer superfine talcum powder of heat conduction wear resistant filler, 0.5 part of polyethylene glycol, glass fibre 7
Part, 1 part of coupling agent, 0.4 part of antioxidant, 0.6 part of lubricant.
Heat conduction wear resistant filler includes aluminium hydroxide, Nanoparticulate α-Al2O3And magnesium hydroxide, aluminium hydroxide are fiber
Shape, and its particle diameter is 60nm, Nanoparticulate α-Al2O3Particle diameter be 15nm, the particle diameter of magnesium hydroxide is 60 μm, by weight,
Aluminium hydroxide：Nanoparticulate α-Al2O3：Magnesium hydroxide=1:1:1；The particle diameter of nanometer superfine talcum powder is 3nm.
Nylon is PA46, coupling agent is silane coupling agent；Antioxidant is irgasfos 168；The lubricant is EBS.
The process that high-fluidity nylon composite is prepared using above-mentioned formula is：
Step 1: by nylon, heat conduction wear resistant filler, nanometer superfine talcum powder, polyethylene glycol, coupling agent, antioxidant and
Lubricant is mixed by proportioning, obtains mixed material；
Fusion plastification is carried out Step 2: the mixed material is added in double screw extruder, then glass fibre is added
Enter the die head and extrusion to double screw extruder, through cooling, pelletizing and drying, obtain high-fluidity nylon composite.
Wherein, it is along the extrusion direction of the mixed material, the temperature setting of the double screw extruder：One area：170
℃；2nd area：180℃；3rd area：190℃；4th area：200℃；5th area：210℃；6th area：220℃；7th area：230℃；8th area：240
℃；9th area：230℃；Tenth area：220℃；Ten area's temperature are the die head temperature of double screw extruder.
Embodiment 4
A kind of high-fluidity nylon composite is this embodiment disclose, includes the component of following parts by weight：
43 parts of nylon, 25 parts of heat conduction wear resistant filler, 1.2 parts of the first flow increasing agent, 0.8 part of the second flow increasing agent, glass fibre 9
Part, 1.4 parts of coupling agent, 0.5 part of antioxidant, 0.9 part of lubricant；
First flow increasing agent is nanometer superfine talcum powder, and heat conduction wear resistant filler includes aluminium hydroxide, Nanoparticulate α-Al2O3
And magnesium hydroxide, by weight, aluminium hydroxide：Nanoparticulate α-Al2O3：Magnesium hydroxide=1:2:1.
Second flow increasing agent includes polyethylene glycol, methoxy poly (ethylene glycol) and polyacrylamide, mass ratio 1:1:1.
Aluminium hydroxide is threadiness, and its particle diameter is 30nm, the Nanoparticulate α-Al2O3Particle diameter be 20nm, it is described
The particle diameter of magnesium hydroxide is 60 μm.
Coupling agent is silane coupling agent；Antioxidant is antioxidant 1010；The lubricant is silicone powder and EBS, its matter
Amount is than being 1:1.
The invention discloses a kind of preparation method of high-fluidity nylon composite, comprise the following steps：
Step 1: by nylon, heat conduction wear resistant filler, the first flow increasing agent, the second flow increasing agent, coupling agent, antioxidant and profit
Lubrication prescription is mixed by proportioning, obtains mixed material；
Fusion plastification is carried out Step 2: the mixed material is added in double screw extruder, then glass fibre is added
Enter the die head and extrusion to double screw extruder, through cooling, pelletizing and drying, obtain high-fluidity nylon composite.
Wherein, it is along the extrusion direction of the mixed material, the temperature setting of the double screw extruder：One area：170
℃；2nd area：182℃；3rd area：195℃；4th area：206℃；5th area：217℃；6th area：225℃；7th area：230℃；8th area：236
℃；9th area：225℃；Tenth area：217℃；Ten area's temperature are the die head temperature of double screw extruder.
Embodiment 5
A kind of high-fluidity nylon composite is this embodiment disclose, includes the component of following parts by weight：
45 parts of nylon, 20 parts of heat conduction wear resistant filler, 0.6 part of the first flow increasing agent, 0.2 part of the second flow increasing agent, glass fibre 10
Part, 1 part of coupling agent, 0.6 part of antioxidant, 0.7 part of lubricant；
First flow increasing agent is nanometer superfine talcum powder, and heat conduction wear resistant filler includes aluminium hydroxide, Nanoparticulate α-Al2O3
And magnesium hydroxide, by weight, aluminium hydroxide：Nanoparticulate α-Al2O3：Magnesium hydroxide=2:1:1.
Second flow increasing agent includes polyethylene glycol, methoxy poly (ethylene glycol) and polyacrylamide, mass ratio 1:1:1.
Aluminium hydroxide is threadiness, and its particle diameter is 30nm, the Nanoparticulate α-Al2O3Particle diameter be 20nm, it is described
The particle diameter of magnesium hydroxide is 60 μm.
Coupling agent is silane coupling agent；Antioxidant is antioxidant 1010；The lubricant is silicone powder and EBS, its matter
Amount is than being 1:1.
The invention discloses a kind of preparation method of high-fluidity nylon composite, comprise the following steps：
Step 1: by nylon, heat conduction wear resistant filler, the first flow increasing agent, the second flow increasing agent, coupling agent, antioxidant and profit
Lubrication prescription is mixed by proportioning, obtains mixed material；
Fusion plastification is carried out Step 2: the mixed material is added in double screw extruder, then glass fibre is added
Enter the die head and extrusion to double screw extruder, through cooling, pelletizing and drying, obtain high-fluidity nylon composite.
Wherein, it is along the extrusion direction of the mixed material, the temperature setting of the double screw extruder：One area：173
℃；2nd area：182℃；3rd area：190℃；4th area：206℃；5th area：217℃；6th area：225℃；7th area：230℃；8th area：236
℃；9th area：225℃；Tenth area：214℃；Ten area's temperature are the die head temperature of double screw extruder.
Embodiment 6
A kind of high-fluidity nylon composite is this embodiment disclose, includes the component of following parts by weight：
25 parts of nylon, 15 parts of heat conduction wear resistant filler, 0.5 part of the first flow increasing agent, 0.1 part of the second flow increasing agent, glass fibre 5
Part, 1 part of coupling agent, 0.3 part of antioxidant, 0.7 part of lubricant；
First flow increasing agent is nanometer superfine talcum powder, and heat conduction wear resistant filler includes aluminium hydroxide, Nanoparticulate α-Al2O3
And magnesium hydroxide, mass ratio 1:1:1.
Second flow increasing agent includes polyethylene glycol, methoxy poly (ethylene glycol) and polyacrylamide, mass ratio 1:1:1.
Aluminium hydroxide is threadiness, and its particle diameter is 60nm, Nanoparticulate α-Al2O3Particle diameter be 10nm, magnesium hydroxide
Particle diameter be 40 μm, by weight, aluminium hydroxide：Nanoparticulate α-Al2O3：Magnesium hydroxide=1:1:1.
Coupling agent is silane coupling agent；Antioxidant is antioxidant 1010；The lubricant is silicone powder and EBS, its matter
Amount is than being 1:1.
The invention discloses a kind of preparation method of high-fluidity nylon composite, comprise the following steps：
Step 1: by nylon, heat conduction wear resistant filler, the first flow increasing agent, the second flow increasing agent, coupling agent, antioxidant and profit
Lubrication prescription is mixed by proportioning, obtains mixed material；
Fusion plastification is carried out Step 2: the mixed material is added in double screw extruder, then glass fibre is added
Enter the die head and extrusion to double screw extruder, through cooling, pelletizing and drying, obtain high-fluidity nylon composite.
Wherein, it is along the extrusion direction of the mixed material, the temperature setting of the double screw extruder：One area：170
℃；2nd area：183℃；3rd area：190℃；4th area：205℃；5th area：217℃；6th area：225℃；7th area：232℃；8th area：236
℃；9th area：224℃；Tenth area：217℃；Ten area's temperature are the die head temperature of double screw extruder.
In order to verify the performance of high-fluidity nylon composite disclosed by the invention, the present invention is to embodiment 1~implementation
High-fluidity nylon composite prepared by example 6 has carried out performance test, and its test result refers to table one：
The performance of high-fluidity nylon composite prepared by one each embodiment of table
As shown in Table 1, the high-fluidity nylon composite that prepared by 1~embodiment of embodiment 6 has high mobility,
And mechanical property is not influenceed, while there is excellent anti-flammability and thermal conductivity.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details.
Claims (10)
- A kind of 1. high-fluidity nylon composite, it is characterised in that including nylon, heat conduction wear resistant filler, the first flow increasing agent with And the second flow increasing agent, the first flow increasing agent are nanometer superfine talcum powder, the heat conduction wear resistant filler includes aluminium hydroxide, nanometer Graininess α-Al2O3And magnesium hydroxide.
- A kind of 2. high-fluidity nylon composite according to claim 1, it is characterised in that the second flow increasing agent bag Include one or two kinds of or a variety of in polyethylene glycol, methoxy poly (ethylene glycol), polyacrylamide.
- 3. a kind of high-fluidity nylon composite according to claim 1, it is characterised in that including following parts by weight Component：25~45 parts of nylon, 15~35 parts of heat conduction wear resistant filler, 0.5~2.5 part of the first flow increasing agent and the second flow increasing agent 0.1~ 1.5 part.
- A kind of 4. high-fluidity nylon composite according to claim 3, it is characterised in that the second flow increasing agent bag Polyethylene glycol, methoxy poly (ethylene glycol) and polyacrylamide are included, and mass ratio is 1:1:1.
- 5. a kind of high-fluidity nylon composite according to claim 1, it is characterised in that the aluminium hydroxide is fibre Shape is tieed up, and its particle diameter is 1~80nm, the Nanoparticulate α-Al2O3Particle diameter be 1~80nm, the particle diameter of the magnesium hydroxide For 1~80 μm.
- A kind of 6. high-fluidity nylon composite according to claim 1, it is characterised in that by weight, the hydrogen Aluminum oxide：Nanoparticulate α-Al2O3：Magnesium hydroxide=2:1:2.
- A kind of 7. high-fluidity nylon composite according to claim 1, it is characterised in that by weight, the hydrogen Aluminum oxide：Nanoparticulate α-Al2O3：Magnesium hydroxide=1:1:2.
- A kind of 8. high-fluidity nylon composite according to claim 1, it is characterised in that by weight, the hydrogen Aluminum oxide：Nanoparticulate α-Al2O3：Magnesium hydroxide=1:1:1.
- 9. a kind of high-fluidity nylon composite according to claim 3, it is characterised in that also including following parts by weight Several components：5~10 parts of glass fibre, 0.6~1.5 part of coupling agent, 0.3~0.8 part of antioxidant, 0.5~1.8 part of lubricant；Wherein, the coupling agent is silane coupling agent；The antioxidant is antioxidant 1010, antioxidant 1076, irgasfos 168 One or both of or three kinds；The lubricant is one or two kinds of in silicone powder, EBS.
- 10. a kind of preparation method of high-fluidity nylon composite according to any one of claim 1~9, its feature It is, comprises the following steps：Step 1: by nylon, heat conduction wear resistant filler, the first flow increasing agent, the second flow increasing agent, coupling agent, antioxidant and lubricant Mixed by proportioning, obtain mixed material；Fusion plastification is carried out Step 2: the mixed material is added in double screw extruder, then glass fibre is added to The die head and extrusion of double screw extruder, through cooling, pelletizing and drying, obtain high-fluidity nylon composite；Wherein, it is along the extrusion direction of the mixed material, the temperature setting of the double screw extruder：One area：165~ 180℃；2nd area：180~190 DEG C；3rd area：190~200 DEG C；4th area：200~220 DEG C；5th area：200~230 DEG C；6th area： 210~230 DEG C；7th area：210~230 DEG C；8th area：220~240 DEG C；9th area：210~230 DEG C；Tenth area：210~230 DEG C；Ten Area's temperature is the die head temperature of double screw extruder.
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