CN106519659A - A high-performance heat-conducting nylon composite material, a preparing method thereof and applications of the composite material - Google Patents
A high-performance heat-conducting nylon composite material, a preparing method thereof and applications of the composite material Download PDFInfo
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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
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- 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
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- C08K2201/003—Additives being defined by their diameter
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention relates to a high-performance heat-conducting nylon composite material. The composite material is prepared from, by weight, 60-100 parts of PA66, 40-80 parts of high-temperature resistant nylon, 5-10 parts of a flexibilizer, 10-20 parts of carbon fibers, 20-50 parts of a heat-conducting filler, 3-8 parts of a compatilizer, 0.3-1.2 parts of an antioxidant and 0.3-2 parts of a lubricant. The composite material has characteristics of high thermal conductivity, good mechanical performance and high heat resistance, and can be adopted as an LED lamp holder in place of metal aluminum, thus increasing the production efficiency of the lamp holder and reducing the cost. In addition, requirements on production equipment of the method are low, the efficiency is high and the method is suitable for large-scale production.
Description
Technical field
The present invention relates to technical field of polymer materials, specifically, be a kind of high-performance Heat conduction nylon composite material and
Its preparation method and application.
Background technology
In recent years, extensively the pushing away in petrochemical industry, machinery, space flight and the field such as civilian with plastics alternative metals material
Extensively, plastics occupy rapidly wide market with the advantage such as its distinctive lightweight, corrosion-resistant.Show the protrusion that alternative metals are used
The advantage of property.But, due to plastics unlike metal material has thermal conductive resin and so which is using being restricted significantly.At present
In the fast development of field of electronics, especially LED, to being put forward higher requirement using material.Material therefor has one
Fixed heat conduction or heat dispersion, while higher heat resistance and mechanical strength will be had.This results in
Category material carries out production and processing, exposes that material production and processing difficulty is big, and link is more, and efficiency is low and the shortcomings of high cost.Nylon
With excellent mechanical property and preferable electrical property, there is wear-resisting, oil resistant, solvent resistant, self-lubricating, corrosion resistance and good again
Processing characteristics the advantages of, be widely used in automobile, electronic apparatus, machinery, electrically, the field such as weapons.But nylon66 fiber
Heat conductivity is generally 0.25W/ (m K), which has limited its application in fields such as radiating, heat conduction.The country adopts heat conduction at present
It is the effective way for improving its thermal conductivity that filler is modified to high temperature resistant nylon.Heat filling can be divided into heat conduction inorganic insulation and fill out
Material and nonisulated two big class of filler of heat conduction.Heat conduction inorganic insulation filler has Al2O3, BN, AlN, ZnO, MgO etc., nonisulated heat conduction is filled out
Metal powder that material has conductivity and thermal conductivity higher, graphite, white carbon black, carbon fiber etc..Certain thermal conductivity coefficient will generally be obtained
Composite, heat filling addition will reach certain volume fraction, filler is contacted to each other in the base and is formed phase
Interaction, makes the substantial amounts of chain of System forming or similar network structure, such thermal conductive network that material conducts heat rate can be made to carry significantly
It is high.But the filling marginal value of heat filling is larger, the other performance of polymeric material itself can be made such as mechanical performance into
Considerable influence, heat conductivility are poor.
Chinese patent 2011103776379, discloses a kind of flame-retarded heat-conducting nylon 66 material and preparation method thereof, the material
Material is prepared from the following raw materials in parts by weight：PA6640-60%, fibrous heat filling 10-20%, metal nitride 5-
20%th, conductive powder 5-20%, composite flame-retardant agent 5-20%, antioxidant 0.1-0.5%, lubricant 0.1-0.5%.Its preparation method
Including：Raw material is weighed by weight ratio；All raw materials are put in high efficient mixer to be mixed and discharge after 5-10 minutes；Will be mixing equal
Even raw material is put into extrusion water-cooled pelletize in screw machine.Chinese patent 2013107454725, discloses a kind of heat conduction nylon66 fiber
Composite and preparation method thereof, the heat conduction nylon 66 composite material are composed of the following components by weight percentage：PA66 resins
43.0-78.0%, graphene microchip 10.0-25.0%, antioxidant 0.2-0.8%, lubricant 0.5-3.0%, dispersant 1.0-
3.0%, spherical aluminum nitride 10.0-25.0%, nucleator 0.2-0.5%.Above-mentioned nylon material has pertained only to the heat conductivity of nylon
Can, it is not directed to its resistance to elevated temperatures.
The content of the invention
The purpose of the present invention is for deficiency of the prior art, there is provided a kind of high-performance Heat conduction nylon composite material.
Another purpose of the present invention is to provide the preparation method of nylon composite materials as described above.
For achieving the above object, the present invention is adopted the technical scheme that：
A kind of high-performance Heat conduction nylon composite material, the composite are made up of the raw material of weight portion as described below：
PA66：60-100 parts；High temperature resistant nylon：40-80 parts；Toughener：5-10 parts；Carbon fiber：10-20 parts；Heat conduction is filled out
Material：20-50 parts；Compatilizer：3-8 parts；Antioxidant：0.3-1.2 parts；Lubricant：0.3-2 parts.
Further, the composite is made up of the raw material of weight portion as described below：
PA66：80 parts；High temperature resistant nylon：60 parts；Toughener：7 parts；Carbon fiber：15 parts；Heat filling：30 parts；It is compatible
Agent：5 parts；Antioxidant：0.6 part；Lubricant：1 part.
Further, the high temperature resistant nylon is one or more mixing in PA9T, PA10T, PA11T, PA12T, PA46.
Further, the toughener be methyl methacrylate/butadiene/styrene copolymers, methyl methacrylate/
Acrylic polymer, maleic anhydride grafting ethylene propylene diene rubber, ethylene-methyl acrylate, Ethylene-butyl acrylate, ethylene-
Acrylate-glycidyl ester terpolymer or ethylene-vinyl acetate copolymer-functionalization maleic anhydride.
Further, the carbon fiber diameter is 7-20 μm.
Further, the heat filling is aluminium nitride, boron nitride, carborundum, aluminium oxide, Zinc Oxide, magnesium oxide, hydroxide
One or more mixing in magnesium, aluminium hydroxide, calcium fluoride, graphite.
Further, the heat filling is Zinc Oxide and calcium fluoride according to mass ratio 1:3 mixing.
Further, the compatilizer is maleic anhydride grafted acrylate, maleic anhydride grafted polyphenylene ether, acrylic acid-grafted
Acrylate, acrylic acid-grafted polyphenylene oxide or Phosphation polyphenylene oxide.
Further, the antioxidant be Hinered phenols antioxidant, phosphite ester kind antioxidant, the one kind in sulfur-bearing antioxidant
Or various mixing.
Further, the lubricant is silicone powder, montanin wax, polyester wax, the one kind being modified in ethylene bis-fatty acid amides
Or various mixing.
To realize above-mentioned second purpose, the present invention is adopted the technical scheme that：
As above the preparation method of arbitrary high-performance heat-conduction nylon material, comprises the steps：
(1) raw material is weighed according to proportioning, PA66 is dried under conditions of 100-120 DEG C 2-4h；
(2) PA66, high temperature resistant nylon, toughener, heat filling, compatilizer, antioxidant and lubricant are put into into high mixer
Discharge after middle mixing 3-5min, obtain pre-composition；
(3) pre-composition is added from twin-screw extrusion owner spout, carbon fiber is added by glass fiber opening, control twin screw
Rotating speed is 800-1200r/min, and processing temperature 240-260 DEG C of double screw extruder carries out extruding pelletization, both product.
The invention has the advantages that：
The present invention nylon composite materials have heat conductivity height, good mechanical property, it is high heat-resisting the characteristics of, can be with alternative metals
Aluminum as LED lamp holder, so as to improve the production efficiency reduces cost of lamp socket.And, the preparation method pair used by the present invention
Production equipment requires low, efficiency high, is easy to large-scale production.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate this
Bright rather than restriction the scope of the present invention.In addition, it is to be understood that after the content for having read record of the present invention, art technology
Personnel can be made various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Fixed scope.
The preparation (one) of the high-performance Heat conduction nylon composite material of 1 present invention of embodiment
(1) PA66 is dried into 3h under conditions of 110 DEG C；
(2)PA66：60 parts, 80 parts of high temperature resistant nylon, 10 parts of toughener, 50 parts of heat filling, 3 parts of compatilizer, antioxidant
1.2 parts and 0.3 part of lubricant, the intrinsic viscosity of the PA66 is 2.4dL/g, and the high temperature resistant nylon is PA9T, the toughness reinforcing
Agent is ethylene-methyl acrylate, and the heat filling is Zinc Oxide and calcium fluoride according to mass ratio 1:3 mixing, it is described compatible
Agent is maleic anhydride grafted acrylate, and the antioxidant is Hinered phenols antioxidant, and the lubricant is silicone powder.According to matching somebody with somebody
Than weighing raw material, discharge after being put into high-speed mixer and mixing 3-5min, obtain pre-composition；
(3) pre-composition is added from twin-screw extrusion owner spout, by carbon fiber, 10 parts are added by glass fiber opening, and control is double
Screw speed is 1100r/min, and processing temperature 240-260 DEG C of double screw extruder carries out extruding pelletization, after material is extruded
Subcooled water pelletizing；The carbon fiber diameter is 7-20 μm；
(4) particle for cutting is dried, 260-280 DEG C of injection mo(u)lding, test.
The preparation (two) of the high-performance Heat conduction nylon composite material of 2 present invention of embodiment
(1) PA66 is dried into 3h under conditions of 110 DEG C；
(2)PA66：100 parts, 40 parts of high temperature resistant nylon, 5 parts of toughener, 20 parts of heat filling, 8 parts of compatilizer, antioxidant
0.3 part and 2 parts of lubricant, the intrinsic viscosity of the PA66 is 2.4dL/g, and the high temperature resistant nylon is PA11T, the toughener
For methyl methacrylate/butadiene/styrene copolymers, the heat filling is Zinc Oxide and calcium fluoride according to mass ratio 1:
3 mixing, the compatilizer be maleic anhydride grafted polyphenylene ether, the antioxidant be phosphite ester kind antioxidant, the lubrication
Agent is montanin wax.Raw material is weighed according to proportioning, is discharged after being put into high-speed mixer and mixing 3-5min, is obtained pre-composition；
(3) pre-composition is added from twin-screw extrusion owner spout, by carbon fiber, 20 parts are added by glass fiber opening, and control is double
Screw speed is 1100r/min, and processing temperature 240-260 DEG C of double screw extruder carries out extruding pelletization, after material is extruded
Subcooled water pelletizing；The carbon fiber diameter is 7-20 μm；
(4) particle for cutting is dried, 260-280 DEG C of injection mo(u)lding, test.
The preparation (three) of the high-performance Heat conduction nylon composite material of 3 present invention of embodiment
(1) PA66 is dried into 3h under conditions of 110 DEG C；
(2)PA66：80 parts, 60 parts of high temperature resistant nylon, 7 parts of toughener, 30 parts of heat filling, 5 parts of compatilizer, antioxidant
0.6 part and 1 part of lubricant, the intrinsic viscosity of the PA66 is 2.4dL/g, and the high temperature resistant nylon is PA12T, the toughener
Ethylene propylene diene rubber is grafted for maleic anhydride, the heat filling is Zinc Oxide and calcium fluoride according to mass ratio 1:3 mixing, institute
It is Phosphation polyphenylene oxide to state compatilizer, and the antioxidant is sulfur-bearing antioxidant, and the lubricant is polyester wax.Claim according to proportioning
Raw material is taken, is discharged after being put into high-speed mixer and mixing 3-5min, is obtained pre-composition；
(3) pre-composition is added from twin-screw extrusion owner spout, by carbon fiber, 20 parts are added by glass fiber opening, and control is double
Screw speed is 1100r/min, and processing temperature 240-260 DEG C of double screw extruder carries out extruding pelletization, after material is extruded
Subcooled water pelletizing；The carbon fiber diameter is 7-20 μm；
(4) particle for cutting is dried, 260-280 DEG C of injection mo(u)lding, test.
Comparative example 1
(1) PA66 is dried into 3h under conditions of 110 DEG C；
(2)PA66：80 parts, 60 parts of high temperature resistant nylon, 7 parts of toughener, 30 parts of heat filling, 5 parts of compatilizer, antioxidant
0.6 part and 1 part of lubricant, the intrinsic viscosity of the PA66 is 2.4dL/g, and the high temperature resistant nylon is PA12T, the toughener
For maleic anhydride be grafted ethylene propylene diene rubber, the heat filling be Zinc Oxide, the compatilizer be Phosphation polyphenylene oxide, institute
It is sulfur-bearing antioxidant to state antioxidant, and the lubricant is polyester wax.Raw material is weighed according to proportioning, high-speed mixer and mixing 3- is put into
Discharge after 5min, obtain pre-composition；
(3) pre-composition is added from twin-screw extrusion owner spout, by carbon fiber, 20 parts are added by glass fiber opening, and control is double
Screw speed is 1100r/min, and processing temperature 240-260 DEG C of double screw extruder carries out extruding pelletization, after material is extruded
Subcooled water pelletizing；The carbon fiber diameter is 7-20 μm；
(4) particle for cutting is dried, 260-280 DEG C of injection mo(u)lding, test.
Comparative example 2
(1) PA66 is dried into 3h under conditions of 110 DEG C；
(2)PA66：80 parts, 60 parts of high temperature resistant nylon, 7 parts of toughener, 30 parts of heat filling, 5 parts of compatilizer, antioxidant
0.6 part and 1 part of lubricant, the intrinsic viscosity of the PA66 is 2.4dL/g, and the high temperature resistant nylon is PA12T, the toughener
For maleic anhydride be grafted ethylene propylene diene rubber, the heat filling be calcium fluoride, the compatilizer be Phosphation polyphenylene oxide, institute
It is sulfur-bearing antioxidant to state antioxidant, and the lubricant is polyester wax.Raw material is weighed according to proportioning, high-speed mixer and mixing 3- is put into
Discharge after 5min, obtain pre-composition；
(3) pre-composition is added from twin-screw extrusion owner spout, by carbon fiber, 20 parts are added by glass fiber opening, and control is double
Screw speed is 1100r/min, and processing temperature 240-260 DEG C of double screw extruder carries out extruding pelletization, after material is extruded
Subcooled water pelletizing；The carbon fiber diameter is 7-20 μm；
(4) particle for cutting is dried, 260-280 DEG C of injection mo(u)lding, test.
Embodiment 1-3 is as shown in table 1 with comparative example 1-2 proportioning
1 embodiment 1-3 of table and comparative example 1-2 formula table
Performance test
Nylon composite wood obtained by high temperature resistant, Heat conduction nylon composite material and comparative example 1-2 prepared by embodiment 1-3
Material carries out performance test comparison, as a result as shown in table 2.
2 embodiment 1-3 of table and comparative example 1-2 the performance test results
From the test result of table 2, the nylon composite materials of the present invention have heat conductivity height, good mechanical property, height resistance to
Hot the characteristics of, can be using alternative metals aluminum as LED lamp holder, so as to improve the production efficiency reduces cost of lamp socket.And, this
Invention preparation method used is low to producing equipment requirements, and efficiency high is easy to large-scale production.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, on the premise of without departing from the inventive method, can also make some improvement and supplement, and these improve and supplement also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of high-performance Heat conduction nylon composite material, it is characterised in that the composite is by weight portion as described below
Raw material is made：
PA66：60-100 parts；High temperature resistant nylon：40-80 parts；Toughener：5-10 parts；Carbon fiber：10-20 parts；Heat filling：
20-50 parts；Compatilizer：3-8 parts；Antioxidant：0.3-1.2 parts；Lubricant：0.3-2 parts.
2. high-performance Heat conduction nylon composite material according to claim 1, it is characterised in that the high temperature resistant nylon is
One or more mixing in PA9T, PA10T, PA11T, PA12T, PA46.
3. high-performance Heat conduction nylon composite material according to claim 1, it is characterised in that the toughener is metering system
Sour methyl ester/butadiene/styrene copolymers, methyl methacrylate/acrylic acid birds of the same feather flock together compound, maleic anhydride grafting EPDM
Rubber, ethylene-methyl acrylate, Ethylene-butyl acrylate, ethylene-acrylate-glycidyl methacrylate ternary is altogether
Polymers or ethylene-vinyl acetate copolymer-functionalization maleic anhydride.
4. high-performance Heat conduction nylon composite material according to claim 1, it is characterised in that the carbon fiber diameter is 7-20
μm。
5. high-performance Heat conduction nylon composite material according to claim 1, it is characterised in that the heat filling is nitridation
One kind in aluminum, boron nitride, carborundum, aluminium oxide, Zinc Oxide, magnesium oxide, magnesium hydroxide, aluminium hydroxide, calcium fluoride, graphite or
Various mixing.
6. high-performance Heat conduction nylon composite material according to claim 1, it is characterised in that the heat filling is Zinc Oxide
With calcium fluoride according to mass ratio 1:3 mixing.
7. high-performance Heat conduction nylon composite material according to claim 1, it is characterised in that the compatilizer is maleic anhydride
Grafted acrylate, maleic anhydride grafted polyphenylene ether, acrylic acid-grafted acrylate, acrylic acid-grafted polyphenylene oxide or Phosphation
Polyphenylene oxide.
8. high-performance Heat conduction nylon composite material according to claim 1, it is characterised in that the antioxidant is Hinered phenols
The mixing of one or more in antioxidant, phosphite ester kind antioxidant, sulfur-bearing antioxidant.
9. high-performance heat-conduction nylon material according to claim 1, it is characterised in that the lubricant is silicone powder, covers denier
One or more mixing in wax, polyester wax, modified ethylene bis-fatty acid amides.
10. the preparation method of the arbitrary high-performance heat-conduction nylon material of claim 1-9, it is characterised in that including following step
Suddenly：
(1) raw material is weighed according to proportioning, PA66 is dried under conditions of 100-120 DEG C 2-4h；
(2) PA66, high temperature resistant nylon, toughener, heat filling, compatilizer, antioxidant and lubricant are put in high mixer and are mixed
Discharge after closing 3-5min, obtain pre-composition；
(3) pre-composition is added from twin-screw extrusion owner spout, carbon fiber is added by glass fiber opening, control twin screw rotating speed
For 800-1200r/min, processing temperature 240-260 DEG C of double screw extruder, extruding pelletization is carried out, both obtained product.
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| CN107987526A (en) * | 2017-12-12 | 2018-05-04 | 宁波伊德尔新材料有限公司 | Automobile-used high-performance modified semi-aromatic nylon composite and production method |
| CN108342073A (en) * | 2017-05-22 | 2018-07-31 | 安徽旭升新材料有限公司 | A kind of heat-conducting plastic and preparation method thereof |
| CN108359233A (en) * | 2017-07-28 | 2018-08-03 | 安徽旭升新材料有限公司 | A kind of waste material continuously enhances thermoplastic carbon fiber composite wood and preparation method thereof |
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| CN108342073A (en) * | 2017-05-22 | 2018-07-31 | 安徽旭升新材料有限公司 | A kind of heat-conducting plastic and preparation method thereof |
| CN108359233A (en) * | 2017-07-28 | 2018-08-03 | 安徽旭升新材料有限公司 | A kind of waste material continuously enhances thermoplastic carbon fiber composite wood and preparation method thereof |
| CN109456593A (en) * | 2017-09-06 | 2019-03-12 | 中南大学 | A kind of PA6 base heat-conductive composite material and preparation method thereof |
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Denomination of invention: A high-performance heat-conducting nylon composite material, a preparing method thereof and applications of the composite material Effective date of registration: 20190830 Granted publication date: 20190716 Pledgee: Donglai Investment Development Co., Ltd. Pledgor: Qingdao Zhongbao Plastic Industry Co., Ltd. Registration number: Y2019370010008 |