CN110358294A - A kind of high intensity Heat conduction nylon composite material and its preparation method and application - Google Patents
A kind of high intensity Heat conduction nylon composite material and its preparation method and application Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
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- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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- 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 invention discloses a kind of high-intensitive Heat conduction nylon composite materials and its preparation method and application, belong to field of polymer composite material, which includes nylon resin: 100 parts；Reinforcing material: 50-100 parts；Heat Conduction Material: 0.5-2.0 parts；Flow ability modifying agent: 5-20 parts；Dispersing agent: 0.3-0.8 parts；Lubricant: 0.1-0.6 parts；Antioxidant: 0.1-0.8 parts；Coupling agent: 0.2-0.6 parts；Preparation method includes: the surface treatment of Heat Conduction Material；The preparation of mixed aid；The preparation of conduction heat flow master batch；The preparation of high-intensitive Heat conduction nylon composite material；Heat conduction nylon composite material is applied to medium-sized, small-sized, micro-motor shell, it is not high to solve polymer composite intensity, the bad problem of thermal conductivity, compared with conventional metals shell, motor housing of the invention has the advantages that light-weight, easily molded, anti-corrosion and weather-proof.
Description
Technical field
The present invention relates to field of polymer composite material, and in particular to a kind of high intensity Heat conduction nylon composite material and its system
Preparation Method and application.
Background technique
Nylon has excellent insulating properties, corrosion resistance, weatherability, resistant of high or low temperature, mechanical property and processing performance, extensively
It is general to be used for mechanized equipment structure member.By the fiber-reinforced modified bending strength for increasing substantially nylon material, stretch by force
Degree and the performances such as heat distortion temperature, become equipment manufacture with mould for steel preferred material and equipment manufacture can not or
Scarce structural material.
China is global maximum motor production and marketing base, from electronic apparatus micromotor to high-speed rail high-speed pulling motor,
The super-huge motor volume of production and marketing such as wind-power electricity generation ranks the first in the world.Motor lightweight, energy-efficientization, profession customizes and intelligence
Automation is the current developing direction of the medium and small motor industry in China, wherein motor lightweight is motor industry hair with intelligence
The maximum direction of exhibition.
For a long time, motor housing generallys use the metal materials such as carbon steel, cast steel, aluminium and is made, although metal material is strong
Degree is high, and thermal conductivity is good, but quality weight, and perishable.High molecular material has the characteristics that light-weight, corrosion-resistant, easy processing, but
Its mechanical strength is not high, and thermal conductivity is poor, it is however generally that, it is not suitable as motor housing material, therefore, and in recent years, industry
Interior small-sized and micro-motor shell largely uses aluminum alloy materials.Compared with steel, there are many motor weight reduction.But it is produced into
This and efficiency, lightweight are still industry question of common concern.
Therefore, high-intensitive Heat conduction nylon composite material and its processing technology are developed, for motor lightweight, it is raw to improve motor
Efficiency is produced, production cost is reduced, maintenance of motor cost tool is reduced and has very great significance, will be brought to middle and small motor industry
Revolutionary development.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of high-intensitive Heat conduction nylon composite material
And its preparation method and application, solve that polymer composite intensity is not high, the bad problem of thermal conductivity.
To achieve the above object, the present invention provides the following technical scheme that
A kind of high intensity Heat conduction nylon composite material, including following raw material components and mass fraction:
Nylon resin: 100 parts；
Reinforcing material: 50-100 parts；
Heat Conduction Material: 0.5-2.0 parts；
Flow ability modifying agent: 5-20 parts；
Dispersing agent: 0.3-0.8 parts；
Lubricant: 0.1-0.6 parts；
Antioxidant: 0.1-0.8 parts；
Coupling agent: 0.2-0.6 parts.
Through the above technical solutions, solving, polymer composite intensity is not high, the bad problem of thermal conductivity, and assigns
The excellent processing fluidity of composite material, to adapt to the processing and forming of middle size motor shell.Improve the mechanics of composite material
Performance, thermal conductivity and processing fluidity performance have manufactured the polymer composite of a kind of high intensity, Gao Liudong, high thermal conductivity.
Further preferably are as follows: the nylon resin include PA6, PA66, PA610, PA612, PA1010, PA46, PA6T,
One of PA9T, PA10T, PA11, PA12 or a variety of, inherent viscosity 2.4-3.6.
Through the above technical solutions, the water imbibition of PA610, PA612, PA1010, PA46, PA6T, PA9T and PA10T compared with
Small, manufactured motor housing dimensional stability and electrical insulating property are preferable, the manufacture especially suitable for middle and small motor shell.
Still more preferably are as follows: the nylon resin inherent viscosity is 2.5-2.8.
Further preferably are as follows: the reinforcing material includes one of carbon fiber, glass fibre, basalt fibre or more
Kind, the fiber filament diameter of the carbon fiber, glass fibre and the basalt fibre is 8-17um.
Through the above technical solutions, carbon fiber tensile strength and modulus are high, it is too higher than lightest but price；Basalt is fine
The tensile strength of dimension is lower than carbon fiber, but price is higher than glass fibre, and basalt fibre specific gravity is higher than carbon fiber, but compares glass fibers
Tie up low, although the intensity of glass fibre there is not that carbon fiber is high, but price is very low, has good humidification to high molecular material.
The usage amount of reinforcing fiber is larger to the intensity effect of composite material, and the less composite material strength that will lead to of fiber consumption is inadequate,
Rotor cannot be enough to bear to run at high speed required support force.Fiber usage amount is more, and middle size motor shell is molded into
When type, the processing fluidity that may result in material is poor and the problems such as injection molding is discontented and appearance is coarse occurs.Carbon fiber and glass
For glass fiber composite using that can assign composite material high mechanical strength, lightweight effect is also fairly obvious.
Still more preferably are as follows: the fiber filament diameter of the carbon fiber, glass fibre and the basalt fibre is
10-12um。
Further preferably are as follows: the Heat Conduction Material includes graphene, nanoscale graphene, carbon nanotube, nanometer stone
One of ink is a variety of.
Through the above technical solutions, graphene, nanoscale graphene, carbon nanotube, nano-graphite are a kind of high
Conductive, Heat Conduction Material.Its electrical and thermal conductivity is successively nanoscale graphene > graphene ﹥ carbon nanotube > nano-graphite.
This kind of nano material molecular structure is network structure, and complete network structure can be formed by being scattered in base nylon resin, such as stone
Black alkene has plane hexagonal lattice structure, and each carbon atom has 4 valence electrons, wherein 3 electronically form the SP of plane2Hydridization
Track, another orbital electron form delocalization and reach pi bond, and electronics can be moved freely planar, so that graphene has quantum
Hall effect, with wearing effect and high-termal conductivity.There are the oxygen-containing functions such as carboxyl, epoxy group, carbonyl, ester group for surface of graphene oxide
Group, therefore with nylon resin Blending Processes, easy and nylon resin forms certain chemical binding force, enhancing and nylon tree
Compatibility and dispersibility between rouge.Graphene is overcome to a certain extent in nylon resin the problem of difficulties in dispersion.Carbon is received
Mitron and nano-graphite use surface oxidation treatment that can equally increase its surface polar groups, to improve itself and nylon tree
Compatibility between rouge.
Further preferably are as follows: the dispersing agent includes C181 branched resin, pentaerythritol ester, the double stearic acid acyls of modified ethylene
One of amine (TAF) is a variety of；The flow ability modifying agent is the branched Nylon resin of special construction, inherent viscosity 1.6-
2.1。
Through the above technical solutions, branched Nylon resin is a kind of PA6 macromolecular chain end with multiple short with amino
The copolymerization PA6 resin of branched structure assigns PA6 resin high mobility, especially molten due to the presence of highly branched chain structure
Melt under state, resin melt viscosity is extremely low, almost becomes free flowable liquid.This resin is added in nylon resin can
Increase substantially the melt fluidity of resin.Resin melt viscosity is reduced, to assign the energy of the effective covered fiber of nylon resin
Power and excellent processing fluidity.Branched Nylon molecular weight is lower, when usage amount is too many, can reduce the intensity of composite material,
When dosage is very little, the processing fluidity that also will affect composite material is good, therefore suitable usage amount is very necessary.
C181 branched resin, the double stearic acid amides (TAF) of modified ethylene, pentaerythritol ester belong to inside and outside lubricant agent, with Buddhist nun
There is certain compatibility between imperial resin, combined with functional group's generationization on reinforcing fiber surface, it is fine that enhancing can be effectively improved
The peptizaiton in nylon resin is tieed up, the problem of the exposed caused component smooth appearance difference of reinforcing fiber is reduced；Simultaneously also
Composite material melt fluidity can be improved；Oxidized polyethylene wax, silicone resin and nylon resin compatibility are although poor, but have
Preferable lubricity and release property.
Further preferably are as follows: the inherent viscosity of the flow ability modifying agent is 1.8-2.0, and dosage is 10-15 parts；Dispersing agent is used
Amount is 0.5-0.7 parts.
Further preferably are as follows: the lubricant includes the one or two of silicone resin, oxidized polyethylene wax.
Through the above technical solutions, improving the release property of composite material and the glossiness of product surface.
Further preferably are as follows: the antioxidant includes Hinered phenols antioxidant and heatproof hydrolysis phosphoric acid ester antioxidant,
The Hinered phenols antioxidant is Hinered phenols antioxidant 1098 or Hinered phenols antioxidant 1097；The heatproof hydrolysis phosphoric acid
Esters antioxidant is irgasfos 168 or antioxidant S-9228, total dosage are as follows: 0.5-0.6 parts.
Further preferably are as follows: the coupling agent includes the one or more of silane coupling agent KH550, KH560, KH570.
Still more preferably are as follows: the coupling agent is KH550 or KH560, and dosage is 0.3-0.5 parts.
A kind of application of high intensity Heat conduction nylon composite material, is applied to motor housing for the Heat conduction nylon composite material
Field.
Through the above technical solutions, nylon composite materials of the invention have high intensity, Gao Liudong, high thermal conductivity, density it is small,
The characteristics such as corrosion-resistant, easy processing molding, substitution metal are used for medium-sized, small-sized, micro-motor shell material, make motor weight substantially
Degree mitigates, and production efficiency improves, and favorable anti-corrosion effect reduces maintenance cost.
A kind of preparation method of high intensity Heat conduction nylon composite material, comprising the following steps:
A, the surface treatment of Heat Conduction Material: according to the parts by weight of raw material components, weighing each raw material component, by heat conduction material
Material, coupling agent are added in heating stirring machine and stir at low speed 1-5min；Preferably 2-4min；
B, point in the raw material components preparation of mixed aid: is sequentially added in step (a) the heating stirring machine
Powder, lubricant and antioxidant after being heated to 60-120 DEG C, stir 1-6min, obtain mixed aid；Preferably, heating temperature
It is 80-100 DEG C, mixing speed 3-5min；
C, the preparation of conduction heat flow master batch: the mixed aid, flow ability modifying agent and 10-20 part nylon resin are continuously counted
Double screw extruder blending extrusion is added in amount, obtains conduction heat flow master batch through cooling, pelletizing, blending extrusion temperature is 230-260
℃；Preferably, blending extrusion temperature is 240-250 DEG C；
D, the preparation of high-intensitive Heat conduction nylon composite material: will be in the conduction heat flow master batch and the raw material components
Reinforcing fiber and remaining nylon resin are added to double screw extruder, and blended extrusion, cooling, pelletizing obtain the thermally conductive Buddhist nun
Imperial composite material, blending extrusion temperature are 240-320 DEG C；Preferably, blending extrusion temperature is 250-310 DEG C.
Through the above technical solutions, the preparation of conduction heat flow master batch is to prepare the committed step with thermally conductive materials, lead
Hot material is preferably nanoscale graphene, and nanoscale graphene weight is very light, is directly added using twin-screw extrusion
When the mode of material, due to the granularity and bulk effect of graphene, on the one hand, graphene can not be mixed in one with other materials,
More importantly in Screw Extrusion transmission process, graphene will be deposited in hopper or in screw rod feed opening in the form of a kind of suspension
, and a kind of solid fluid swirl shape is formed, it can not effectively convey.Therefore, direct feed way just not can guarantee graphene yet
And auxiliary agent is evenly dispersed in base nylon resin.For graphene wear-resistant material, it is much less microcosmic on
Dispersion, macroscopically stable charging is also difficult to ensure.And evenly dispersed in resin of graphene is to form contiguous network knot
The primary condition of structure, contiguous network structure are then to confer to the fundamental that material has certain thermal conduction characteristic.At graphene surface
During reason, the auxiliary agents such as dispersing agent, lubricant, antioxidant melt under heating is adhered to surface of graphene oxide.Graphite oxide
The bulk density of alkene becomes larger, and volume becomes smaller.Especially coupling agent, lubricant can coat graphene oxide well.This is to protect
Demonstrate,prove the committed step that graphene oxide stablizes charging.The modified additives such as graphene oxide are continuously and stably sent into using masterbatch method
Double screw extruder, solve graphene stablizes conveying and dispersion problem.So that the manufacture of graphene modified composite material
It is achieved.Master batch carrier uses base nylon resin, and preferably branching PA6 resin, and this resin is under heating, it is easy to
Melting, and there is extremely low melt viscosity, i.e., in the molten state, branching PA6 has very low viscosity.Therefore nylon resin
And in fiber blend heating process, master batch is melted at first, is adhered to each other with reinforcing material, nylon resin, it is molten with nylon resin
Melt process, so that graphene oxide and auxiliary agent are scattered in heap of times in nylon resin and fiber, this not only accelerates graphene
Dispersion in nylon resin also accelerates dispersion of the fiber in nylon resin.
In the blending process, the design of double-screw combined structure and blending extrusion temperature is highly important.Especially pinch
The Combination Design for closing mixing section is particularly important, and the Combination Design of this section includes the parallactic angle and its size, kneading block combination of kneading block
Structure and its quantity reflect the shearing of screw rod and the size of mixed, the manufacture for high microsteping enhancing composite material, most heavy
What is wanted is how reinforcing fiber to be dispersed in base nylon resin, and reinforcing fiber dispersion is bad, then leads to reinforcing fiber not
It or accumulates, reduces the mutual cementation of reinforcing fiber and base nylon resin, so as to cause the mechanical property of composite material
Difference, while also will affect the mobility and component presentation quality of composite material.In the present invention, there is high shear again using multiple groups
There is the kneading block Combination Design of immixture, guarantees that the composite material of manufacture has the characteristics that high-intensitive, high fluidity.
In the design aspect of blending extrusion temperature, high-temperature fusion low temperature is kneaded design, nylon resin, master batch and reinforcing fiber
Enter double screw extruder from double screw extruder feed opening and fiber side spout respectively.Nylon resin and master batch are heated molten
Melt and arrival side spout in direction is converged with fiber axially along a screw, into the mixing area of screw rod, the tree melted in the process
Rouge auxiliary agent blend melt constantly wraps up dispersion fiber, and under the effect of screw rod kneading block, the continuous low power shearing of fiber, constantly
Dispersion is mixed with resin.In general, the temperature of resin melt is higher, and the viscosity of melt is lower, also easier infiltration packet
Cover fiber.It is largely in the fiber of normal temperature state due to feeding at screw rod side feed material, infiltrates cladding room temperature in high-temperature fusant
During fiber, a large amount of heat can be also transmitted, leads to declining to a great extent for resin melt self-temperature, it is fine that result influences enhancing
Tie up nylon resin between mixing with dissolve each other.Therefore, relatively high temperature is designed in melt zone, keeps certain in mixing section
Temperature be promote resin melt mixed with reinforcing fiber disperse essential condition.
In conclusion the invention has the following advantages: solving that polymer composite intensity is not high, and thermal conductivity is not
Good problem, and the excellent processing fluidity of composite material is imparted, to adapt to the processing and forming of middle size motor shell.It improves
Mechanical property, thermal conductivity and the processing fluidity performance of composite material manufacture a kind of high intensity, Gao Liudong, high thermal conductivity macromolecule
Composite material.Preparation process is simple, can make full use of each raw material component characteristic, and Heat conduction nylon composite material is suitable for medium-sized, small
The manufacture of type, micro-motor shell, compared with conventional metals shell, motor housing of the invention has light-weight, easily molded, anti-
Rotten, weather-proof advantage.
Specific embodiment
Below with reference to embodiment, the present invention will be described in detail.
In the present embodiment, Heat conduction nylon composite material includes following raw material components and mass fraction:
Nylon resin: 100 parts；
Reinforcing material: 50-100 parts；
Heat Conduction Material: 0.5-2.0 parts；
Flow ability modifying agent: 5-20 parts；
Dispersing agent: 0.3-0.8 parts；
Lubricant: 0.1-0.6 parts；
Antioxidant: 0.1-0.8 parts；
Coupling agent: 0.2-0.6 parts.
Nylon resin include PA6, PA66, PA610, PA612, PA1010, PA46, PA6T, PA9T, PA10T, PA11,
One of PA12 or a variety of, relative viscosity 2.1-3.4, preferably 2.5-2.8.Reinforcing material includes carbon fiber, glass
One of fiber, basalt fibre are a variety of, and usage amount is 50-100 parts, preferably 80-90 parts.Carbon fiber, glass fibre
It is long fibre or staple fiber, fiber filament diameter 8-17um, preferably 10-12um with basalt fibre；Heat Conduction Material includes
One of graphene, nanoscale graphene, carbon nanotube, nano-graphite are a variety of, and usage amount is 0.5-2.0 parts, excellent
It is selected as 0.7-1.50 parts of nanoscale graphene；Flow ability modifying agent be branched Nylon resin, inherent viscosity 1.6-2.1,
Preferably 1.8-2.0, dosage are 5-20 parts, preferably 10-15 parts.Dispersing agent includes C181 branched resin, pentaerythritol ester, changes
Property one of ethylene bis stearic acid amide or a variety of, usage amount is 0.3-0.8 parts, preferably 0.5-0.7 parts.Lubricant includes
The one or two of silicone resin, oxidized polyethylene wax, usage amount are 0.1-0.6 parts, preferably 0.3-0.5 parts.Antioxidant packages
Hinered phenols antioxidant and heatproof hydrolysis phosphoric acid ester antioxidant are included, Hinered phenols antioxidant is Hinered phenols antioxidant 1098
Or Hinered phenols antioxidant 1097.Heatproof hydrolysis phosphoric acid ester antioxidant is irgasfos 168 or antioxidant S-9228.This implementation
It is used in combination in example using Hinered phenols antioxidant 1098 and heatproof hydrolysis phosphoric acid ester antioxidant S-9228, total dosage is
It 0.1-0.8 parts, matches as 3:2, total dosage is preferably 0.5-0.6 parts.Coupling agent include silane coupling agent KH550, KH560,
KH570's is one or more, and usage amount is 0.2-0.6 parts, preferably 0.3-0.5 parts.
It should be noted that PA6 used in the present invention is provided by Ba Ling petro-chemical corporation, PA66 is mentioned by table mountain Shen Ma company
There is provided for, PA10T by Guangzhou golden hair Science and Technology Ltd., PA1010 buying in Shanghai celluloid Co., Ltd, PA46 buying in
Dutch DSM, branching PA6 buying are purchased in Zhuzhou epoch green wood science and technology joint-stock company, nanoscale graphene in Deyang olefinic carbon
Science and Technology Ltd., carbon nanotube are purchased in Jiangsu Xian Feng Nono-material Science & Technology Ltd..Other materials is commercially available.
The alternative steel of composite material manufactured by the present invention are used for medium-sized, small-sized, micro-motor shell material, using note
It moulds moulding process and manufactures middle or small, micro-motor shell.
The preparation method of Heat conduction nylon composite material, comprising the following steps:
A, the surface treatment of Heat Conduction Material: by the parts by weight of above-mentioned raw materials component, weighing each raw material component, by raw material group
Heat Conduction Material, coupling agent in point are added in heating stirring machine and stir at low speed 1-5min；Preferably 2-4min.
B, the preparation of mixed aid: the dispersing agent in raw material components is sequentially added in step (a) heating stirring machine, is lubricated
Agent and antioxidant after being heated to 60-120 DEG C, stir 1-6min, obtain mixed aid；It is preferred that are as follows: heating temperature 80-100
DEG C, mixing time 3-5min.
C, the preparation of conduction heat flow master batch: mixed aid, flow ability modifying agent and 10-20 parts of nylon resin continuous meterings are added
Enter double screw extruder blending extrusion, obtains conduction heat flow master batch through cooling, pelletizing, blending extrusion temperature is 230-260 DEG C；It is excellent
Be selected as: blending extrusion temperature is 240-250 DEG C.
D, the preparation of high-intensitive Heat conduction nylon composite material: by the reinforcing fiber in conduction heat flow master batch and raw material components
Be continuously metered double screw extruder with remaining 80-90 parts of nylon resin, through double screw extruder heating melting, mixing,
Processes blending extrusion, cooling, the pelletizings such as metering conveying, obtain Heat conduction nylon composite material, and blending extrusion temperature is 240-320
DEG C, screw speed 400-600rpm, vacuum-0.06-0.09MPa.Preferably, blending extrusion temperature is 250-300 DEG C, wherein
Screw rod melt zone is 260-300 DEG C, and mixing section is 250-260 DEG C, and metering section is 250-270 DEG C, screw speed 450-550rpm,
Vacuum-0.07-0.09MPa.
Embodiment 1: a kind of high intensity Heat conduction nylon composite material, raw material components and mass fraction are as follows: PA66:100kg；Glass
Glass fiber: 80kg；Branching PA6 (inherent viscosity 1.8): 10kg；Nanoscale graphene: 0.8kg；Carbon nanotube: 0.2kg；
C181 branched resin: 0.6kg；Silicone resin: 0.4kg；Hinered phenols antioxidant 1098:0.3kg；Heatproof hydrolysis phosphoric acid ester
Antioxidant S-9228:0.2kg；Coupling agent KH550:0.3kg.
The present embodiment further includes the preparation method of Heat conduction nylon composite material, the specific steps are that:
Step 1: pressing above-mentioned raw materials component and mass fraction, each raw material component is weighed, then by nanoscale graphene
It is added in heating stirring machine with carbon nanotube, opens stirring, coupling agent is added in mixing speed 50prm under stiring
KH550 is heated to 80 DEG C, continues to stir 4min；
Step 2: sequentially adding C181 branched resin, silicone resin, Hinered phenols while stirring in heating stirring machine
Antioxidant 1098 and heatproof hydrolysis phosphoric acid ester antioxidant S-9228, charging finish, and mixing speed is risen to 100prm, temperature
It is 60 DEG C, continues to stir 3min, obtain mixed aid 2.8kg；
Step 3: 2.8kg mixed aid is mixed with 10kg branching PA6,10kg nylon resin, and add it to double spiral shells
Bar extruder blending extrusion, granulation obtain conduction heat flow master batch 22.8kg.Blending extrusion temperature are as follows: 250 DEG C, 260 DEG C, 260 DEG C,
240 DEG C, 240 DEG C, 230 DEG C, 230 DEG C, 235 DEG C, screw speed 400prm；Vacuum is -0.06MPa.
Step 4: it is standby that 90kg nylon resin, glass fibre and conduction heat flow master batch are separately added into weigher hopper A, B, C
With.Nylon resin, glass fibre, conduction heat flow master batch in A, B, C hopper is pressed into 4.5kg/min, 4.5kg/min respectively,
2.0kg/min ratio continuous metering is delivered to double screw extruder, and heated melt blending extrusion, cooling, pelletizing obtain thermally conductive
Nylon composite materials B1, blending extrusion temperature are as follows: 250 DEG C, 280 DEG C, 280 DEG C, 270 DEG C, 250 DEG C, 250 DEG C, 250 DEG C, 250
DEG C, 255 DEG C, engine speed 500rpm, vacuum: -0.08MPa.
Test, the correlated performances such as test bars processability are sampled to Heat conduction nylon composite material B1.Test result
It is shown in Table 1.
The preparation of motor housing: design power 3KW motor housing, motor housing are made of two end cap and cylindrical housings,
End cap is bolted with cylindrical housings.The shape and structure of motor housing are the prior art, and details are not described herein.?
The molding of motor housing is carried out on 600T injection molding machine, injection-mold process parameter includes injection molding temperature: 260 DEG C, 270
DEG C, 285 DEG C；Nozzle temperature: 285 DEG C；120 DEG C of mold temperature；Injection pressure: 85MPa；Injection speed: 85mm/s, back pressure
20MPa, dwell pressure 75MPa, be applied motor housing C1.
It is corresponding to carry out evaluation test with motor housing C1: 1., to detect motor speed change and motor housing temperature rise influence: surveying
Determine motor housing surface temperature of the motor speed in 500rpm, 1000rpm；2., motor continuous high speed operating to case surface
Temperature influences: the measurement continuous 1000rpm of motor, the case surface temperature of operating 24 hours.Evaluation result is shown in Table 2.
Embodiment 2: the difference from embodiment 1 is that, change nylon resin type, the PA66 in embodiment 1 is substituted for
PA610, other are same as Example 1, obtain Heat conduction nylon composite material B2.
Test is sampled to Heat conduction nylon composite material B2, test result is shown in Table 1.
It is made by Heat conduction nylon composite material B2 and applies motor housing C2, preparation method is same as Example 1.And it is corresponding
Evaluation test is carried out with motor housing C2, test method is same as Example 1, is shown in Table 2 using motor housing C2 evaluation result.
Embodiment 3: the difference from embodiment 1 is that, change nylon resin type, the PA66 in embodiment 1 is substituted for
PA1010, other are same as Example 1, obtain Heat conduction nylon composite material B3.
Test is sampled to Heat conduction nylon composite material B3, test result is shown in Table 1.
It is made by Heat conduction nylon composite material B3 and applies motor housing C3, preparation method is same as Example 1.And it is corresponding
Evaluation test is carried out with motor housing C3, test method is same as Example 1, is shown in Table 2 using motor housing C3 evaluation result.
Embodiment 4: the difference from embodiment 1 is that, change nylon resin type, the PA66 in embodiment 1 is substituted for
PA46, PA46, glass fibre and conduction heat flow master batch blending extrusion temperature are as follows: 290 DEG C, 310 DEG C, 310 DEG C, 310 DEG C, 290 DEG C,
290 DEG C, 290 DEG C, 290 DEG C, 295 DEG C.Other are same as Example 1, obtain Heat conduction nylon composite material B4.
Test is sampled to Heat conduction nylon composite material B4, test result is shown in Table 1.
Motor housing, injection molding temperature are prepared by Heat conduction nylon composite material B4 are as follows: 295 DEG C, 295 DEG C, 320 DEG C,
Nozzle temperature are as follows: 320 DEG C, mould temperature are as follows: 120 DEG C, other are same as Example 1.Be applied motor housing C4.
Corresponding to carry out evaluation test with motor housing C4, test method is same as Example 1, evaluates using motor housing C4
It the results are shown in Table 2.
Embodiment 5: the difference from embodiment 1 is that, change nylon resin type, the PA66 in embodiment 1 is substituted for
PA10T, PA10T, glass fibre and conduction heat flow master batch blending extrusion temperature are as follows: 290 DEG C, 310 DEG C, 310 DEG C, 310 DEG C, 290
DEG C, 290 DEG C, 290 DEG C, 290 DEG C, 295 DEG C.Other are same as Example 1, obtain Heat conduction nylon composite material B5.
Test is sampled to Heat conduction nylon composite material B5, test result is shown in Table 1.
Motor housing, injection molding temperature are prepared by Heat conduction nylon composite material B5 are as follows: 295 DEG C, 295 DEG C, 320 DEG C,
Nozzle temperature are as follows: 320 DEG C, mould temperature are as follows: 120 DEG C, other are same as Example 1.Be applied motor housing C5.
Corresponding to carry out evaluation test with motor housing C5, test method is same as Example 1, evaluates using motor housing C5
It the results are shown in Table 2.
Embodiment 6: the difference from embodiment 1 is that, change nylon resin type, the PA66 in embodiment 1 is substituted for
PA1010, glass fibre and carbon fiber are used in combination, and glass fibre and carbon fiber mass ratio are 3:2, other and 1 phase of embodiment
Together.Obtain Heat conduction nylon composite material B6.
Test is sampled to Heat conduction nylon composite material B6, test result is shown in Table 1.
It is made by Heat conduction nylon composite material B6 and applies motor housing C6, preparation method is same as Example 1.And it is corresponding
Evaluation test is carried out with motor housing C6, test method is same as Example 1, is shown in Table 2 using motor housing C6 evaluation result.
Embodiment 7: the difference from embodiment 1 is that, raw material components and mass fraction are as follows: PA66:100kg；Glass fibre:
80kg；Branching PA6 (inherent viscosity 1.8): 10kg；Nanoscale graphene: 0.8kg；Carbon nanotube: 0.2kg；Modified ethylene
Double stearic acid amides (TAF): 0.5kg；Pentaerythritol ester: 0.3kg；Silicone resin: 0.4kg；Hinered phenols antioxidant 1098:
0.3kg；Heatproof hydrolysis phosphoric acid ester antioxidant S-9228:0.2kg；Coupling agent KH550:0.3kg.
Preparation method is same as Example 1, obtains Heat conduction nylon composite material B7.
Test is sampled to Heat conduction nylon composite material B7, test result is shown in Table 1.
It is made by Heat conduction nylon composite material B7 and applies motor housing C7, preparation method is same as Example 1.And it is corresponding
Evaluation test is carried out with motor housing C7, test method is same as Example 1, is shown in Table 2 using motor housing C7 evaluation result.
Embodiment 8: the difference from embodiment 1 is that, conduction heat flow master batch is continuously added to by 2.5kg/min, other and reality
It is identical to apply example 1, obtains Heat conduction nylon composite material B8.
Test is sampled to Heat conduction nylon composite material B8, test result is shown in Table 1.
It is made by Heat conduction nylon composite material B8 and applies motor housing C8, preparation method is same as Example 1.And it is corresponding
Evaluation test is carried out with motor housing C8, test method is same as Example 1, is shown in Table 2 using motor housing C8 evaluation result.
Material properties test standard of the present invention:
Tensile strength (MPa): GB/T1040-1992；
Bending strength (MPa): GB/T1449-2005；
Bending modulus (MPa): GB/T1449-2005；
Notch impact strength (kJ/m2): GB/T1043-1993；
Heat distortion temperature (DEG C): GB/T1633-2000；
Thermal coefficient (w/mk): GB10295；
Melt index test condition: PA66, PA610 and PA1010 melting temperature are 270 DEG C；PA46 and PA10T melting temperature
Degree is 320 DEG C；Counterweight: 5kg.
For the performance test knot of Heat conduction nylon composite material B1, B2, B3, B4, B5, B6, B7, B8 obtained by embodiment 1-8
Fruit, such as table 1:
1 Heat conduction nylon composite material performance of table
Embodiment 1-8 resulting application motor housing C1, C2, C3, C4, C5, C6, C7, C8 are subjected to evaluation test, and will
It is compared with existing metal motor housing, such as table 2:
The application motor housing of table 2 is evaluated
By table 1,2 it is found that Heat conduction nylon composite material has the characteristics such as high intensity, Gao Liudong, thermal conductivity, high-low temperature resistant,
Heat conduction nylon composite material bending strength minimum 335MPa, up to 386MPa.The minimum 260MPa of tensile strength, up to
295MPa.The minimum 5.6kg/m of low temperature impact strength2, up to 15.6kg/m2.Heat conduction nylon composite material melt index is minimum
For 60g/10min, up to 70g/10min.Minimum 240 DEG C of heat distortion temperature, up to 280 DEG C.Thermal coefficient is minimum
16.5W/mk, up to 20.6W/mk.
As shown in Table 2, the variation of motor housing surface temperature is increased less with motor speed, continuously run at high speed for a long time
When, motor housing surface temperature is only 6 DEG C higher than metal shell.Illustrate that fiber reinforced nylon composite material of the invention is applicable in completely
In the application of middle and small motor shell.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvement and modification
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of high intensity Heat conduction nylon composite material, it is characterised in that: including following raw material components and mass fraction:
Nylon resin: 100 parts；
Reinforcing material: 50-100 parts；
Heat Conduction Material: 0.5-2.0 parts；
Flow ability modifying agent: 5-20 parts；
Dispersing agent: 0.3-0.8 parts；
Lubricant: 0.1-0.6 parts；
Antioxidant: 0.1-0.8 parts；
Coupling agent: 0.2-0.6 parts.
2. a kind of high-intensitive Heat conduction nylon composite material according to claim 1, it is characterised in that: the nylon resin packet
One of PA6, PA66, PA610, PA612, PA1010, PA46, PA6T, PA9T, PA10T, PA11, PA12 or a variety of are included, it is special
Property viscosity be 2.4-3.6.
3. a kind of high-intensitive Heat conduction nylon composite material according to claim 1, it is characterised in that: the reinforcing material packet
One of carbon fiber, glass fibre, basalt fibre or a variety of are included, the carbon fiber, glass fibre and the basalt are fine
The fiber filament diameter of dimension is 8-17um.
4. a kind of high-intensitive Heat conduction nylon composite material according to claim 1, it is characterised in that: the Heat Conduction Material packet
Include one of graphene, nanoscale graphene, carbon nanotube, nano-graphite or a variety of.
5. a kind of high-intensitive Heat conduction nylon composite material according to claim 1, it is characterised in that: the dispersing agent includes
One of C181 branched resin, pentaerythritol ester, modified ethylene bis stearic acid amide are a variety of；The flow ability modifying agent is branch
Change nylon resin, inherent viscosity 1.6-2.1.
6. a kind of high-intensitive Heat conduction nylon composite material according to claim 1, it is characterised in that: the lubricant includes
The one or two of silicone resin, oxidized polyethylene wax.
7. a kind of high-intensitive Heat conduction nylon composite material according to claim 1, it is characterised in that: the antioxidant includes
Hinered phenols antioxidant and heatproof hydrolysis phosphoric acid ester antioxidant, the Hinered phenols antioxidant are Hinered phenols antioxidant
1098 or Hinered phenols antioxidant 1097；The heatproof hydrolysis phosphoric acid ester antioxidant is irgasfos 168 or antioxidant S-
9228。
8. a kind of high-intensitive Heat conduction nylon composite material according to claim 1, it is characterised in that: the coupling agent includes
Silane coupling agent KH550, KH560, KH570's is one or more.
9. a kind of application of high intensity Heat conduction nylon composite material, it is characterised in that: by any thermally conductive Buddhist nun of claim 1-8
Imperial composite material is applied to motor housing field.
10. a kind of preparation method of high intensity Heat conduction nylon composite material, it is characterised in that: the following steps are included:
A, the surface treatment of Heat Conduction Material: according to the parts by weight of raw material components described in claim 1, weighing each raw material component,
Heat Conduction Material, coupling agent are added in heating stirring machine and stir at low speed 1-5min；
B, the preparation of mixed aid: sequentially added in step (a) the heating stirring machine dispersing agent in the raw material components,
Lubricant and antioxidant after being heated to 60-120 DEG C, stir 1-6min, obtain mixed aid；
C, the preparation of conduction heat flow master batch: the mixed aid, flow ability modifying agent and 10-20 parts of nylon resin continuous meterings are added
Enter double screw extruder blending extrusion, obtains conduction heat flow master batch through cooling, pelletizing, blending extrusion temperature is 230-260 DEG C；
D, the preparation of high-intensitive Heat conduction nylon composite material: by the enhancing in the conduction heat flow master batch and the raw material components
Fiber and remaining nylon resin are added to double screw extruder, and it is any to obtain claim 1-8 for blended extrusion, cooling, pelletizing
The Heat conduction nylon composite material, blending extrusion temperature are 240-320 DEG C.
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| CN111961257A (en) * | 2020-09-03 | 2020-11-20 | 华东理工大学 | Composite copper salt antioxidant system and application thereof in nylon material |
| CN112852149A (en) * | 2021-01-13 | 2021-05-28 | 江苏兆维塑料科技有限公司 | Flame-retardant antistatic glass fiber reinforced nylon 6 composite material and preparation method thereof |
| CN113337108A (en) * | 2021-06-01 | 2021-09-03 | 南京欣阳新能源科技有限公司 | Nylon material reinforced and modified by carbon nano tube and preparation method thereof |
| CN115572477A (en) * | 2021-06-21 | 2023-01-06 | 广州视源电子科技股份有限公司 | High-thermal-conductivity nylon composite material and preparation method thereof |
| CN115572477B (en) * | 2021-06-21 | 2024-03-19 | 广州视源电子科技股份有限公司 | High-heat-conductivity nylon composite material and preparation method thereof |
| CN114316585A (en) * | 2022-01-08 | 2022-04-12 | 浙江卡尼尔聚合新材料有限公司 | High-strength nylon 66 composite material and processing technology thereof |
| CN114316585B (en) * | 2022-01-08 | 2024-01-02 | 浙江卡尼尔聚合新材料有限公司 | High-strength nylon 66 composite material and processing technology thereof |
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Application publication date: 20191022 |