CN110041692A - A kind of nylon composite and preparation method thereof - Google Patents
A kind of nylon composite and preparation method thereof Download PDFInfo
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- CN110041692A CN110041692A CN201910083449.1A CN201910083449A CN110041692A CN 110041692 A CN110041692 A CN 110041692A CN 201910083449 A CN201910083449 A CN 201910083449A CN 110041692 A CN110041692 A CN 110041692A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The present invention relates to nylon material technical field, specially a kind of nylon composite, is to be made of following raw material: nylon 6, nylon66 fiber, long glass fibres, modified poly ethylene grafted maleic anhydride, fire retardant, lubricant, nano heat-conductive filler.High thermal conductivity, special appearance, the nano effect of nano heat-conductive filler improve the compatibility between heat filling and nylon component, its molten bait of modified Research of Grafting Malaic Anhydride Onto Polyethylene, emulsification, the performances such as dispersion, lubrication and coupling can be significantly improved, so that nylon 6, nylon66 fiber and nano heat-conductive filler com-patibilising effect are more preferably, the preparation method simple process, condition is easily-controllable, it is low in cost, the performance of composite material is improved, industrialized production is suitable for.
Description
Technical field
The present invention relates to nylon material technical field, specially a kind of nylon composite and preparation method thereof.
Background technique
With the development of industrial production and science and technology, many fields propose higher want to the heating conduction of material
It asks, especially the chip package in LED field and Design of Luminaires application, needs to discharge caused by LED by Heat Conduction Material
Heat.The radiator almost all that LED illumination product uses currently on the market is metal material or ceramic material, but metal produces
Product are more than great, molding procedure (such as die casting aluminium: to need a series of works through casting, die casting, polishing, polishing, nickel plating, nitridation
Skill), molding cycle is long, equipment takes up space is big；Then moulding process is more complicated for ceramic product, and shape is single and extensive automatic
Metaplasia produces and is not easy to realize, cost is also relatively higher.Compared with this common two kinds of material, there is light weight using organic heat-conducting plastic
Change, design freedom is high, energy consumption is small, pollution is small, the advantages such as degree height are mass produced.
Yield occupies the nylon of engineering plastics first place, nylon be the outstanding scientist's Tomas Carothers (Carothers) in the U.S. and
What its computer MSR Information system under leading was developed, be the first synthetic fibers occurred in the world.Nylon is polyamide fibre
A kind of saying for tieing up (polyamide fibre), is generally divided into nylon 6, nylon66 fiber.6 appearance of nylon is milky to faint yellow, has toughness, resists
Pinking has higher mechanical strength and heat resistance, and shock strength is preferable, and fusing point is higher, and moulding processability is good, and water imbibition is big,
Saturated water absorption is 11% or so, and meltable in sulfated phenolic or formic acid, brittle temperature is the degree of minus 20 degrees -30.Due to
With excellent mechanical property and preferable electrical property, and there is wear-resisting, oil resistant, solvent resistant, self-lubricating, corrosion-resistant and good
The advantages that processing performance, is widely used in the fields such as automobile, electronic apparatus, machinery, electrical, weapons.But nylon is thermally conductive
Coefficient is generally 0.25W (mK)-1, which has limited its applications in the fields such as heat dissipation, thermally conductive, modified nylon are prepared into thermally conductive
Material has further widened the application range of nylon.Currently, the thermally conductive generally existing heat filling of nylon and nylon compatibility and dividing
Dissipate the deficiencies of property is not good enough, heating conduction is not good enough, loading is excessive, density is bigger than normal, processing performance is not good enough.For improve heat filling with
Nylon compatibility and dispersed not good enough problem, the country disclose a kind of nylon, are to dissolve nylon in a solvent, then will lead
Hot filler is added to nylon lysate and is sufficiently mixed, and then heating removes solvent, is grinding to obtain modified heat filling.The Buddhist nun
Dragon has the disadvantage that 1, nylon, along with the degradation of nylon, generates small-molecule substance, it will shadow during solvent dissolution
The appearance and performance of the hot nylon of pilot；2, complex procedures are unfavorable for industrializing；3, solvent belongs to toxic or dangerous substance；4,
Heat filling be it is hydrophilic, it is to be improved with nylon compatibility.The country discloses another method using fabricated in situ thermally conductive
The filler surfaces synthetic nylons such as filler such as graphene, this method complex procedures, high production cost are unfavorable for industrializing.For this purpose, I
Propose a kind of nylon composite and preparation method thereof.
Summary of the invention
The purpose of the present invention is to provide a kind of nylon composites and preparation method thereof, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the above object, the invention provides the following technical scheme:
A kind of nylon composite, which is characterized in that be made of following raw material according to parts by weight:
Preferably, the modified poly ethylene grafted maleic anhydride is by after polyethylene wax and the mixing of maleic anhydride heating melting
Initiator benzoyl peroxide is added, increases temperature to 125-135 DEG C, is stirred 1.5-2.5h, pour out and quantitative first is added
Benzene, being warming up to 65-75 DEG C makes its molten bait, is cooled to room temperature after the completion of molten bait, excessive acetone is added, analyse grafting under stirring
Object is crushed powdering and is precipitated out, is then filtered, is dried, obtains modified poly ethylene grafted maleic anhydride.
Preferably, the fire retardant is to select at least one of halogen antimony type fire retardant and halogen-free flame retardants.
Preferably, the lubricant is pentaerythritol stearate, modified ethylene bis stearamide, modified polyethylene wax
It is one or more kinds of.
Preferably, the nano heat-conductive filler is by carbon nanotube, nano talc, micro-nano metallic fiber according to 5:2:
4 ratio mixes.
Preferably, the diameter of the carbon nanotube is 6-12nm, and the partial size of the nano talc is 12-16nm, micro-nano
The diameter of rice metallic fiber is 9-15nm.
A kind of preparation method of nylon composite, includes the following steps:
S1, modified poly ethylene grafted maleic anhydride is prepared:
S11, ethylene waxes and maleic anhydride are put into reaction kettle by weight for the ratio of 3:2, are heated to molten condition
When initiator benzoyl peroxide and antioxidant DNP is added, continue to heat, increase temperature to 125-135 DEG C, be stirred 1.5-
2.5h is poured out while hot, obtains Research of Grafting Malaic Anhydride Onto Polyethylene crude product；
S12, the toluene that can flood crude product is poured into Research of Grafting Malaic Anhydride Onto Polyethylene crude product obtained in step S11, heat
To 65-75 DEG C, make its molten bait, be cooled to room temperature after the completion of molten bait, excessive acetone is added, breaks grafting precipitate under stirring
It is broken into powdery precipitation, is then filtered, three times with acetone washing, is dried, is put into baking oven at 55-65 DEG C dried bean noodles to perseverance
Weight, obtains modified poly ethylene grafted maleic anhydride；
S2, raw material mixing:
Nylon 6 and nylon66 fiber are sequentially added in open mill, when being heated to molten condition, by nano heat-conductive filler, fire-retardant
Agent, lubricant and modified poly ethylene grafted maleic anhydride are sequentially added into open mill, are filled with nitrogen protection, begin to pratise mixed
It closes, mixes 50-70min, obtain mixture A；
S3, mixing squeeze out:
Mixture A obtained in step S2 is squeezed out from double screw extruder, meanwhile, enter from the glass of double screw extruder
Long glass fibres is added in mouth, is allowed to mix extrusion with mixture A, obtains mixture B；
S4, cooling and dicing:
After the mixture B room temperature cooling solidification that step S3 is obtained, it is cut into fine particle through pelleter, then pellet is existed
Dried bean noodles obtains nylon composite to constant weight at a temperature of 55-65 DEG C.
Preferably, in the step S3, the temperature in double-screw extruding machine barrel is divided into three sections, and a zone temperatures are
255-265 DEG C, two zone temperatures are 260-270 DEG C, and three zone temperatures are 245-255 DEG C, screw speed 285r/min.
Compared with prior art, the beneficial effects of the present invention are: nylon composite proposed by the present invention, by nylon 6,
Nano heat-conductive filler is added in nylon66 fiber, nano heat-conductive filler is compounded by carbon nanotube, nano talc, micro-nano metallic fiber
It forms, forms the conducting networks of heat in nylon matrix material, the loading of filler can be reduced, the height of nano heat-conductive filler is led
Hot property, special appearance, nano effect improve the compatibility between heat filling and nylon component, and make the composite micro-nano rice
Heat filling is easy dispersion and processing, effectively reduces the usage amount of composite micro-nano rice heat filling, imparts nylon of the present invention
Composition high thermal conductivity, while density is small, performance is stablized, and is added when nano heat-conductive filler is mixed with nylon base modified poly-
Vinyl Graft maleic anhydride, introducing-COOH ,-CO- ,-CONH, isopolarity group in the carbochain of polyethylene improve surface
Power, its molten bait of modified Research of Grafting Malaic Anhydride Onto Polyethylene, emulsification, the performances such as dispersion, lubrication and coupling can obtain significantly
It improves, so that nylon 6, nylon66 fiber and nano heat-conductive filler com-patibilising effect are more preferably, the addition of long glass fibres improves composite wood
The impact resistance of material, engineering properties is tough, to impart the nylon composite materials while have the rigidity of reinforcing and hardness, resistance to
Hot, dimensional stability, low temperature resistivity, ageing-resistant, the flame retardant property of fire retardant promotion composition, preparation method technique letter
Single, condition is easily-controllable, low in cost, improves the performance of composite material, is suitable for industrialized production.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
The invention provides the following technical scheme:
Embodiment 1
A kind of nylon composite, which is characterized in that be made of following raw material according to parts by weight:
Modified poly ethylene grafted maleic anhydride is by initiator is added after polyethylene wax and the mixing of maleic anhydride heating melting
Benzoyl peroxide increases temperature to 125 DEG C, is stirred 1.5h, pours out and quantitative toluene is added, being warming up to 65 DEG C keeps its molten
Bait, molten bait are cooled to room temperature after the completion, and excessive acetone is added, and stirring is lower, and the broken powdering of grafting precipitate is precipitated, so
After filtered, dried, obtain modified poly ethylene grafted maleic anhydride；Fire retardant is to select halogen antimony type fire retardant and halogen-free flameproof
At least one of agent；Lubricant is one kind of pentaerythritol stearate, modified ethylene bis stearamide, modified polyethylene wax
Or it is two or more；Nano heat-conductive filler be by carbon nanotube, nano talc, micro-nano metallic fiber according to 5:2:4 ratio
It mixes；The diameter of carbon nanotube is 6nm, and the partial size of nano talc is 12nm, and the diameter of micro-nano metallic fiber is
9nm。
A kind of preparation method of nylon composite, includes the following steps:
S1, modified poly ethylene grafted maleic anhydride is prepared:
S11, ethylene waxes and maleic anhydride are put into reaction kettle by weight for the ratio of 3:2, are heated to molten condition
When initiator benzoyl peroxide and antioxidant DNP is added, continue to heat, increase temperature to 125 DEG C, be stirred 1.5h, take advantage of
Heat is poured out, and Research of Grafting Malaic Anhydride Onto Polyethylene crude product is obtained；
S12, the toluene that can flood crude product is poured into Research of Grafting Malaic Anhydride Onto Polyethylene crude product obtained in step S11, heat
To 65 DEG C, make its molten bait, be cooled to room temperature after the completion of molten bait, excessive acetone is added, is crushed grafting precipitate under stirring
Powdering is precipitated, and is then filtered, three times with acetone washing, is dried, is put into baking oven the dried bean noodles at 55 DEG C and obtain to constant weight
Modified poly ethylene grafted maleic anhydride；
S2, raw material mixing:
Nylon 6 and nylon66 fiber are sequentially added in open mill, when being heated to molten condition, by nano heat-conductive filler, fire-retardant
Agent, lubricant and modified poly ethylene grafted maleic anhydride are sequentially added into open mill, are filled with nitrogen protection, begin to pratise mixed
It closes, mixes 50min, obtain mixture A；
S3, mixing squeeze out:
Mixture A obtained in step S2 is squeezed out from double screw extruder, meanwhile, enter from the glass of double screw extruder
Long glass fibres is added in mouth, is allowed to mix extrusion with mixture A, obtains mixture B；
S4, cooling and dicing:
After the mixture B room temperature cooling solidification that step S3 is obtained, it is cut into fine particle through pelleter, then pellet is existed
Dried bean noodles obtains nylon composite to constant weight at a temperature of 55 DEG C.
In step S3, the temperature in double-screw extruding machine barrel is divided into three sections, and a zone temperatures are 255 DEG C, two sections
Temperature is 260 DEG C, and three zone temperatures are 245 DEG C, screw speed 285r/min.
Embodiment 2
A kind of nylon composite, which is characterized in that be made of following raw material according to parts by weight:
Modified poly ethylene grafted maleic anhydride is by initiator is added after polyethylene wax and the mixing of maleic anhydride heating melting
Benzoyl peroxide increases temperature to 130 DEG C, is stirred 2h, pours out and quantitative toluene is added, being warming up to 70 DEG C keeps its molten
Bait, molten bait are cooled to room temperature after the completion, and excessive acetone is added, and stirring is lower, and the broken powdering of grafting precipitate is precipitated, so
After filtered, dried, obtain modified poly ethylene grafted maleic anhydride；Fire retardant is to select halogen antimony type fire retardant and halogen-free flameproof
At least one of agent；Lubricant is one kind of pentaerythritol stearate, modified ethylene bis stearamide, modified polyethylene wax
Or it is two or more；Nano heat-conductive filler be by carbon nanotube, nano talc, micro-nano metallic fiber according to 5:2:4 ratio
It mixes；The diameter of carbon nanotube is 9nm, and the partial size of nano talc is 14nm, and the diameter of micro-nano metallic fiber is
12nm。
A kind of preparation method of nylon composite, includes the following steps:
S1, modified poly ethylene grafted maleic anhydride is prepared:
S11, ethylene waxes and maleic anhydride are put into reaction kettle by weight for the ratio of 3:2, are heated to molten condition
When initiator benzoyl peroxide and antioxidant DNP is added, continue to heat, increase temperature to 130 DEG C, be stirred 2h, while hot
It pours out, obtains Research of Grafting Malaic Anhydride Onto Polyethylene crude product；
S12, the toluene that can flood crude product is poured into Research of Grafting Malaic Anhydride Onto Polyethylene crude product obtained in step S11, heat
To 70 DEG C, make its molten bait, be cooled to room temperature after the completion of molten bait, excessive acetone is added, is crushed grafting precipitate under stirring
Powdering is precipitated, and is then filtered, three times with acetone washing, is dried, is put into baking oven the dried bean noodles at 60 DEG C and obtain to constant weight
Modified poly ethylene grafted maleic anhydride；
S2, raw material mixing:
Nylon 6 and nylon66 fiber are sequentially added in open mill, when being heated to molten condition, by nano heat-conductive filler, fire-retardant
Agent, lubricant and modified poly ethylene grafted maleic anhydride are sequentially added into open mill, are filled with nitrogen protection, begin to pratise mixed
It closes, mixes 60min, obtain mixture A；
S3, mixing squeeze out:
Mixture A obtained in step S2 is squeezed out from double screw extruder, meanwhile, enter from the glass of double screw extruder
Long glass fibres is added in mouth, is allowed to mix extrusion with mixture A, obtains mixture B；
S4, cooling and dicing:
After the mixture B room temperature cooling solidification that step S3 is obtained, it is cut into fine particle through pelleter, then pellet is existed
Dried bean noodles obtains nylon composite to constant weight at a temperature of 60 DEG C.
In step S3, the temperature in double-screw extruding machine barrel is divided into three sections, and a zone temperatures are 260 DEG C, two sections
Temperature is 265 DEG C, and three zone temperatures are 250 DEG C, screw speed 285r/min.
Embodiment 3
A kind of nylon composite, which is characterized in that be made of following raw material according to parts by weight:
Modified poly ethylene grafted maleic anhydride is by initiator is added after polyethylene wax and the mixing of maleic anhydride heating melting
Benzoyl peroxide increases temperature to 135 DEG C, is stirred 2.5h, pours out and quantitative toluene is added, being warming up to 75 DEG C keeps its molten
Bait, molten bait are cooled to room temperature after the completion, and excessive acetone is added, and stirring is lower, and the broken powdering of grafting precipitate is precipitated, so
After filtered, dried, obtain modified poly ethylene grafted maleic anhydride；Fire retardant is to select halogen antimony type fire retardant and halogen-free flameproof
At least one of agent；Lubricant is one kind of pentaerythritol stearate, modified ethylene bis stearamide, modified polyethylene wax
Or it is two or more；Nano heat-conductive filler be by carbon nanotube, nano talc, micro-nano metallic fiber according to 5:2:4 ratio
It mixes；The diameter of carbon nanotube is 12nm, and the partial size of nano talc is 16nm, and the diameter of micro-nano metallic fiber is
15nm。
A kind of preparation method of nylon composite, includes the following steps:
S1, modified poly ethylene grafted maleic anhydride is prepared:
S11, ethylene waxes and maleic anhydride are put into reaction kettle by weight for the ratio of 3:2, are heated to molten condition
When initiator benzoyl peroxide and antioxidant DNP is added, continue to heat, increase temperature to 135 DEG C, be stirred 2.5h, take advantage of
Heat is poured out, and Research of Grafting Malaic Anhydride Onto Polyethylene crude product is obtained；
S12, the toluene that can flood crude product is poured into Research of Grafting Malaic Anhydride Onto Polyethylene crude product obtained in step S11, heat
To 75 DEG C, make its molten bait, be cooled to room temperature after the completion of molten bait, excessive acetone is added, is crushed grafting precipitate under stirring
Powdering is precipitated, and is then filtered, three times with acetone washing, is dried, is put into baking oven the dried bean noodles at 65 DEG C and obtain to constant weight
Modified poly ethylene grafted maleic anhydride；
S2, raw material mixing:
Nylon 6 and nylon66 fiber are sequentially added in open mill, when being heated to molten condition, by nano heat-conductive filler, fire-retardant
Agent, lubricant and modified poly ethylene grafted maleic anhydride are sequentially added into open mill, are filled with nitrogen protection, begin to pratise mixed
It closes, mixes 70min, obtain mixture A；
S3, mixing squeeze out:
Mixture A obtained in step S2 is squeezed out from double screw extruder, meanwhile, enter from the glass of double screw extruder
Long glass fibres is added in mouth, is allowed to mix extrusion with mixture A, obtains mixture B；
S4, cooling and dicing:
After the mixture B room temperature cooling solidification that step S3 is obtained, it is cut into fine particle through pelleter, then pellet is existed
Dried bean noodles obtains nylon composite to constant weight at a temperature of 65 DEG C.
In step S3, the temperature in double-screw extruding machine barrel is divided into three sections, and a zone temperatures are 265 DEG C, two sections
Temperature is 270 DEG C, and three zone temperatures are 255 DEG C, screw speed 285r/min.
For embodiment beneficial effects of the present invention, following experiment is made:
Nylon composite sample will be made through same injection mold according to the production method of embodiment 1-3 in the present inventor, together
When, select the nylon composite for the two kinds of different brands sold on the market that nylon composite sample is made through same injection mold,
Specimen size is 120mm*80mm*6mm, as a comparison case 1 and comparative example 2, it is tested for the property, is tied as shown in table 1 below
Fruit:
Table 1
From the data in table 1, it can be seen that the thermally conductive of nylon composite obtained by embodiment 1-3, tensile strength, bending modulus, punching
Hit intensity and thermal deformation behavior are superior to the nylon composite of comparative example 1-2, therefore, its tool of nylon composite provided by the invention
There are more preferably heating conduction, impact resistance, heat resistance etc..
Nylon composite proposed by the present invention, by the way that nano heat-conductive filler, nano heat-conductive are added in nylon 6, nylon66 fiber
Filler is compounded by carbon nanotube, nano talc, micro-nano metallic fiber, and the biography of heat is formed in nylon matrix material
Wire guide network can reduce the loading of filler, and high thermal conductivity, special appearance, the nano effect of nano heat-conductive filler, which improve, leads
Compatibility between hot filler and nylon component, and the composite micro-nano rice heat filling is made to be easy dispersion and processing, it is effectively reduced
The usage amount of composite micro-nano rice heat filling, imparts nylon composite high thermal conductivity of the present invention, while density is small, performance
Stablize, modified poly ethylene grafted maleic anhydride is added when nano heat-conductive filler is mixed with nylon base, in the carbochain of polyethylene
Upper introducing-COOH ,-CO- ,-CONH, isopolarity group improve surface tension, modified Research of Grafting Malaic Anhydride Onto Polyethylene its
Molten bait, emulsification, the performances such as dispersion, lubrication and coupling can be significantly improved, so that nylon 6, nylon66 fiber and nano heat-conductive
More preferably, the addition of long glass fibres improves the impact resistance of composite material to filler com-patibilising effect, and engineering properties is tough, thus
It imparts the nylon composite materials while there is the rigidity of reinforcing and hardness, heat resistance, dimensional stability, low temperature resistivity, resistance to old
To change, fire retardant promotes the flame retardant property of composition, and the preparation method simple process, condition is easily-controllable, and it is low in cost, improve composite wood
The performance of material is suitable for industrialized production.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of nylon composite, which is characterized in that be made of following raw material according to parts by weight:
2. a kind of nylon composite according to claim 1, it is characterised in that: the modified poly ethylene grafted maleic anhydride
It is to increase temperature to 125-135 by initiator benzoyl peroxide is added after polyethylene wax and the mixing of maleic anhydride heating melting
DEG C, it is stirred 1.5-2.5h, pours out and quantitative toluene is added, being warming up to 65-75 DEG C makes its molten bait, to be cooled after the completion of molten bait
To room temperature, excessive acetone is added, stirring is lower, and the broken powdering of grafting precipitate is precipitated, and is then filtered, is dried, obtained
Modified poly ethylene grafted maleic anhydride.
3. a kind of nylon composite according to claim 1, it is characterised in that: the fire retardant is to select halogen antimony type fire-retardant
At least one of agent and halogen-free flame retardants.
4. a kind of nylon composite according to claim 1, it is characterised in that: the lubricant is pentaerythrite stearic acid
The one or more of ester, modified ethylene bis stearamide, modified polyethylene wax.
5. a kind of nylon composite according to claim 1, it is characterised in that: the nano heat-conductive filler is by carbon nanometer
Pipe, nano talc, micro-nano metallic fiber are mixed according to the ratio of 5:2:4.
6. a kind of nylon composite according to claim 5, it is characterised in that: the diameter of the carbon nanotube is 6-
12nm, the partial size of the nano talc are 12-16nm, and the diameter of micro-nano metallic fiber is 9-15nm.
7. a kind of preparation method of such as nylon composite as claimed in any one of claims 1 to 6, which is characterized in that including walking as follows
It is rapid:
S1, modified poly ethylene grafted maleic anhydride is prepared:
S11, ethylene waxes and maleic anhydride are put into reaction kettle by weight for the ratio of 3:2, are heated to adding when molten condition
Enter initiator benzoyl peroxide and antioxidant DNP, continue to heat, increases temperature to 125-135 DEG C, be stirred 1.5-
2.5h is poured out while hot, obtains Research of Grafting Malaic Anhydride Onto Polyethylene crude product；
S12, the toluene that can flood crude product is poured into Research of Grafting Malaic Anhydride Onto Polyethylene crude product obtained in step S11, be heated to 65-
75 DEG C, make its molten bait, be cooled to room temperature after the completion of molten bait, excessive acetone is added, is broken into grafting precipitate under stirring
Powdery is precipitated, and is then filtered, three times with acetone washing, is dried, is put into baking oven the dried bean noodles at 55-65 DEG C and obtain to constant weight
To modified poly ethylene grafted maleic anhydride；
S2, raw material mixing:
Nylon 6 and nylon66 fiber are sequentially added in open mill, when being heated to molten condition, by nano heat-conductive filler, fire retardant, profit
Lubrication prescription and modified poly ethylene grafted maleic anhydride are sequentially added into open mill, are filled with nitrogen protection, carry out mixing of beginning to pratise, and are mixed
50-70min is closed, mixture A is obtained；
S3, mixing squeeze out:
Mixture A obtained in step S2 is squeezed out from double screw extruder, meanwhile, add from the glass entrance of double screw extruder
Enter long glass fibres, is allowed to mix extrusion with mixture A, obtains mixture B；
S4, cooling and dicing:
After the mixture B room temperature cooling solidification that step S3 is obtained, it is cut into fine particle through pelleter, then by pellet in 55-
Dried bean noodles obtains nylon composite to constant weight at a temperature of 65 DEG C.
8. a kind of preparation method of nylon composite according to claim 6, it is characterised in that: double in the step S3
Temperature in screw extruder barrel is divided into three sections, and a zone temperatures are 255-265 DEG C, and two zone temperatures are 260-270 DEG C,
Three zone temperatures are 245-255 DEG C, screw speed 285r/min.
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| CN201910083449.1A CN110041692A (en) | 2019-01-29 | 2019-01-29 | A kind of nylon composite and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752073A (en) * | 2019-11-01 | 2020-02-04 | 邝少毅 | Preparation method of cable insulation failure repair material |
| CN113861674A (en) * | 2021-09-22 | 2021-12-31 | 东风汽车集团股份有限公司 | Heat-resistant polyamide material and application thereof |
-
2019
- 2019-01-29 CN CN201910083449.1A patent/CN110041692A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752073A (en) * | 2019-11-01 | 2020-02-04 | 邝少毅 | Preparation method of cable insulation failure repair material |
| CN110752073B (en) * | 2019-11-01 | 2021-01-12 | 深圳联颖通讯有限公司 | Preparation method of cable insulation failure repair material |
| CN113861674A (en) * | 2021-09-22 | 2021-12-31 | 东风汽车集团股份有限公司 | Heat-resistant polyamide material and application thereof |
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