CN102533228A - Coated heat conducting material, heat conducting composite material and preparing methods thereof - Google Patents
Coated heat conducting material, heat conducting composite material and preparing methods thereof Download PDFInfo
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Abstract
The invention relates to the field of nanometer materials, in particular to a high-heat conducting efficiency coated heat conducting material and a preparing method of the material as well as a coated heat conducting composite material and a preparing method of the composite material. The coated heat conducting material comprises a mineral powder packing layer and a nanoscale heat conducting powder layer coated on the surface of the mineral powder packing layer. The composite material of the coated heat conducting material is prepared from the following raw materials in weight proportion: 38-90% of thermoplastic plastics, 0-30% of filler, 5-25% of flexibilizer, 2-10% of coated heat conducting powder, 0.1-1.0% of heat stabilizer and 0.1-1.0% of antioxidant, wherein the coated heat conducting powder is the coated heat conducting material. According to the invention, a simple mechanical ultra-shearing method is used to prepare the coated heat conducting material; compared with ultrasonic, filtering and chemical vapor deposition methods in prior arts, the method of the invention is simple in process, suitable for industrial production and low in cost, and can obtain the coated heat conducting material with good electrical conductivity and dispersity. The coated heat conducting material can be fully dispersed when being added in plastic materials and has the advantages of high heat conducting efficiency, simple process and low cost.
Description
Technical field
The present invention relates to field of nanometer material technology, relate in particular to the high cladded type thermal conducting material of a kind of heat transfer efficiency and preparation method, cladded type thermal conductance matrix material and preparation method.
Background technology
Along with the raising of scientific and technological level, can have relatively high expectations to material thermal conductivity in fields such as heat exchange engineering, electromagnetic shielding, electronic information, needs material to have more excellent comprehensive performances.Like electric field, with integrated and fast development package technique, ten thousand times of ground of the volume thousandfold of electronic component, logical circuit dwindle, and traditional thermally conductive material can't satisfy its radiating requirements at present, press for high heat radiation packaging insulating plastics.
The plastics thermal conductivity is very little, and the approach that improves its heat conductivility has two kinds, and the one, synthetic structural plastic with high thermal conductivity coefficient, like polyacetylene, polyaniline, polypyrrole etc., ME is complicated, and they mainly realize heat conduction through electronics heat conduction mechanism; Or the synthetic plastics that have complete crystallinity, realize heat conduction through phonon; Like parallel super drawing high density polyethylene(HDPE) (HDPE); Be stretched under the room temperature 25 times the time; The thermal conductivity that is parallel to the molecular chain direction can reach 13. 4 W/ (mK), though good heat-conducting is arranged, ME is complicated.The 2nd, with high heat conductive filler plastics to be filled, cheap, the easy machine-shaping of the heat-conducting plastic that obtains can be applied to some special dimension through suitable art breading, and is limited but conductivity improves.
The research and development of novel high thermal conductivity coefficient filler greatly improve the thermal conductivity of plastics.With heat conductive filler size superfineization to nano level; Then qualitative change can take place because of interatomic distance in the particle and structural modification in filler; Farthest form the heat conduction network chain on the direction of heat flow at material internal, especially some covalent bond type material becomes the metallic bond type material, and heat conductivility sharply raises.For example, nano level aluminium nitride AlN AlN thermal conductivity is 320 W/ (mK), and conventional aluminium nitride AlN AlN is merely 36 W/ (mK).Reduce the filler grain size and help the heat conductivility raising; Yet nano level heat conductive filler particle diameter is little; Very big surface energy is arranged, add that material the inside takes place to reunite easily to and the heat conductivility and the physical and mechanical property that influence material, nano level in addition heat conductive filler costs an arm and a leg.
Therefore, be necessary to provide a kind of novel nanometer conductive filling, this filler should be able to well be distributed in the plastic material, and can reduce its usage quantity, and the thermal conductance matrix material that is made by this filler simultaneously should have good thermal conductivity.
Summary of the invention
The object of the present invention is to provide a kind of with low cost, cladded type thermal conducting material of being suitable for suitability for industrialized production and good dispersivity, excellent thermal conductivity, reduction nano material usage quantity, more specifically is the thermal conducting material of being processed by nano level heat conduction powder and mineral filler.Another object of the present invention is to provide the preparation method of this cladded type thermal conducting material.
Another purpose of the present invention is to provide the matrix material of the excellent cladded type thermal conducting material of a kind of comprehensive mechanical property, heat conductivility, thermal-oxidative aging property, and this matrix material is the basis, is that matrix is processed through melt extruding with the thermoplastics with the cladded type thermal conducting material.
To achieve these goals, the technical scheme that the present invention adopted is: the cladded type thermal conducting material is characterized in that: be made up of mineral powder filling materials layer and the nano level heat conduction powder layer that is coated on the mineral powder filling materials laminar surface.
Further, described nano level heat conduction powder is aluminium nitride AlN (chemical formula is AlN) or SP 1 nano level thermal conducting materials such as (chemical formula are BN).
Further, described mineral powder filling materials is common breeze, and Mohs' hardness is 1-3, comprises one or more of breeze materials such as talcum powder, lime carbonate, kaolin, Peng Run soil.
Further, the particle diameter ratio of described mineral powder filling materials and nano level heat conduction powder is 10:1-50:1.
Prepare the method for above-mentioned cladded type thermal conducting material, it is characterized in that: the barrel-shaped bearing material rotor high-speed rotational shear through dispersion machine makes nano level heat conduction powder be coated on the mineral filler surface.
The preparation method of above-mentioned cladded type thermal conducting material is characterized in that: comprise the steps that (1) is with nano level heat conduction powder and mineral powder filling materials 1:4 mixing by weight proportion; (2) (1) gained mixture is put into dispersion machine, make the bed of material bear huge impact, compression, shearing force and produce localized hyperthermia, two kinds of materials are fused into particle, and particle becomes sphere, thereby has formed the cladded type thermal conducting material.
The preparation method of above-mentioned cladded type thermal conducting material, more specifically, with nano-level conducting powder and mineral powder filling materials proportional mixing; Barrel-shaped bearing material rotor high-speed rotation through the high-shear dispersion machine; Make the bed of material pass through the narrow gap between rotor and the circular stator, make the bed of material bear huge impact, compression, shearing force and produce localized hyperthermia, form local plasma; Two kinds of materials are merged; Sub-particles coalesce is on macrobead, and particle deforms to the sphere development simultaneously, thereby has formed the cladded type thermal conducting material.
The present invention uses the ultra cutting method of simple machinery, produces impact, shearing force and localized hyperthermia through barrel-shaped bearing material rotor high-speed rotation, mineral powder filling materials and nano-level conducting powder body material is merged and the formation circular granular, promptly makes the cladded type thermal conducting material.Compare with existing ultrasonic, filtration, chemical gaseous phase depositing process, technology is simple, be fit to industrial production, with low cost and can obtain the cladded type thermal conducting material of electroconductibility, good dispersivity.
The matrix material of cladded type thermal conducting material is characterized in that: be prepared into by following materials of weight proportions:
Thermoplastics 38-90%;
Filler 0-30%;
Toughner 5-25%;
Cladded type heat conduction powder 2-10%;
Thermo-stabilizer 0.1-1.0%;
Oxidation inhibitor 0.1-1.0%;
Wherein, described cladded type heat conduction powder is meant above-mentioned cladded type thermal conducting material.
The matrix material of above-mentioned cladded type thermal conducting material, said thermoplastics are Vestolen PP 7052 (being abbreviated as PP), acrylonitrile-butadiene-styrene (ABS) (being abbreviated as ABS), polycarbonate (being abbreviated as PC), polycaprolactam (being called for short PA6 or nylon 6), gather adipoyl hexanediamine materials such as (being called for short PA66 or nylon 66).
The matrix material of above-mentioned cladded type thermal conducting material, said filler is one or more of fillers such as talcum powder, lime carbonate, magnesium sulfate crystal whisker, wollastonite, the packing material size scope is the 1-10 micron.
The matrix material of above-mentioned cladded type thermal conducting material, said toughner is rubber elastomer, comprises polyolefin elastomer (being called for short POE), terpolymer EP rubber (being called for short EPDM) or ethylene-methyl acrylate copolymer (being called for short EMA) etc.
The matrix material of above-mentioned cladded type thermal conducting material, described thermo-stabilizer and oxidation inhibitor are the thermal oxidation stability system and the required auxiliary agent of antioxidant system of corresponding thermoplastics.
The matrix material of above-mentioned cladded type thermal conducting material, the weight proportion of described cladded type heat conduction powder is 5%-8%.
It is 8-35 W/ (mK) that the matrix material of above-mentioned cladded type thermal conducting material, described cladded type are invited the thermal conductivity coefficient of the matrix material of material.
Prepare the method for the matrix material of above-mentioned cladded type thermal conducting material, it is characterized in that: may further comprise the steps
(1) weighs raw material by weight ratio;
(2) raw material was done in super mixer mixed 3-5 minute;
(3) mixed raw material is placed dual-screw-stem machine,, make the matrix material of cladded type electrical-conductive nanometer material through melt extruding granulation.
The preparation method of the matrix material of above-mentioned cladded type thermal conducting material, in the step (3), extrusion pressure is controlled at 12-18MPa, and temperature is 215～225 ℃ when melt extruding granulation.
The cladded type thermal conducting material is added in the plastic material, can access sufficient dispersion, make to form contact and interaction between filler; Formed similar netted or catenate structural form in the system; Promptly form the heat conduction network chain, heat transfer efficiency is high, thereby has made good heat-conducting plastic material; Other characteristics of this heat-conductive composite material in addition are like mechanical property, thermo-oxidative stability.With the cladded type thermal conducting material is the matrix material that process on the basis, and the ratio range of material is wide, and preparation technology is simple, cost is low.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is done further explain:
The preparation of one cladded type thermal conducting material
1. aluminium nitride AlN, boron nitride nanometer material are that grand military nano material ltd buys from Xuzhou.
2. with thermally conductive material and mineral powder filling materials 1:4 mixing by weight proportion, realize that through the rotational shear of high speed shear dispersion machine concrete processing parameter is: rotating speed 1500-3000 rev/min, temperature 80-150 ℃, pressure 3-8MPa, the residence time is 5-10 minute.
The preparation of the matrix material of two cladded type thermal conducting materials
The matrix material of cladded type thermal conducting material is mixed with by following materials of weight proportions: (%)
Thermoplastics 38-90;
Filler 0-30;
Toughner 5-25;
Cladded type heat conduction powder 2-10;
Thermo-stabilizer DSTP 0.1-1.0;
Antioxidant 1010 0.1-1.0;
Oxidation inhibitor 168 0.1-0.5.
The material requirements of using: thermoplastics is common Vestolen PP 7052 (PP), acrylonitrile-butadiene-styrene (ABS) (ABS), polycarbonate (PC), polycaprolactam (PA6), gathers adipoyl hexanediamine (PA66) etc.; The filler that the preparation matrix material uses is talcum powder, lime carbonate, magnesium sulfate crystal whisker, wollastonite etc., and its particle size range is the 1-10 micron; Described cladded type heat conduction powder is the cladded type thermal conducting material of above-mentioned preparation; The nano heat-conductive material that wherein coats is nano level aluminium nitride AlN (AlN), SP 1 (BN); The powder that is coated is common breeze, and Mohs' hardness is 1-3, like talcum powder, lime carbonate, kaolin, Peng Run soil etc.; Above-mentioned materials (removing cladded type heat conduction powder) can be bought through the commercialization approach; The toughner POE (being polyolefin elastomer) that adopts produces for DOW Chemical (DOW) company, and trade names are Engage 8842, and chemical name is the hot rubber of second; Antioxidant 1010 produces for Ciba company, and trade names are Irganox 1010, and chemical name is four (β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester; Oxidation inhibitor 168 produces for Ciba company, and trade names are Irgafos 168, and chemical name is three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester; Thermo-stabilizer DSTP is that Britain ICE company produces, and trade names are Negonox DSTP, and chemical name is the thio-2 acid octadecyl ester.
This embodiment is divided into three groups; Each embodiment of three groups all explains matrix material of cladded type thermal conducting material and preparation method thereof; Specifically, be concrete prescription and the preparation process of first group of embodiment (embodiment 1-8) below, the thermoplastics that uses is Vestolen PP 7052 (PP).
Embodiment 1
In super mixer, do to mix 3-5 minute by weight getting Vestolen PP 7052 57%, talcum powder 30%, POE 10%, cladded type heat conduction powder 2%, thermo-stabilizer DSTP 0.5%, antioxidant 1010 0.3%, oxidation inhibitor 168 0.2%, afterwards, again in twin screw extruder through melt extruding; Granulation makes the pellet of PP composite material, is divided into ten process island by temperature in the forcing machine; Its process control condition is: 180～190 ℃ in a district, 200～210 ℃ in two districts, 200～210 ℃ in three districts; 210～215 ℃ in four districts, 210～215 ℃ in five districts, 210～215 ℃ in six districts; 215～225 ℃ in seven districts, 215～225 ℃ in eight districts, 215～225 ℃ in nine districts; 215～225 ℃ in ten districts extrude through the pellet completion of back, ten districts; The residence time is 1-2 minute altogether in forcing machine, and forcing machine pressure is 12-18MPa.
Embodiment 2
In super mixer, do to mix 3-5 minute by weight getting Vestolen PP 7052 64%, talcum powder 20%, POE 10%, cladded type heat conduction powder 5%, thermo-stabilizer DSTP 0.7%, antioxidant 1010 0.1%, oxidation inhibitor 168 0.2%, afterwards, again in twin screw extruder through melt extruding; Granulation makes the pellet of PP composite material, and its process control condition is: 180～190 ℃ in a district; 200～210 ℃ in two districts, 200～210 ℃ in three districts, 210～215 ℃ in four districts; 210～215 ℃ in five districts, 210～215 ℃ in six districts, 215～225 ℃ in seven districts; 215～225 ℃ in eight districts, 215～225 ℃ in nine districts, 215～225 ℃ in ten districts; The residence time is 1-2 minute, and pressure is 12-18MPa.
Embodiment 3
In super mixer, do to mix 3-5 minute by weight getting Vestolen PP 7052 46%, talcum powder 20%, POE 25%, cladded type heat conduction powder 8%, thermo-stabilizer DSTP0.8%, antioxidant 1010 0.1%, oxidation inhibitor 168 0.1%, afterwards, again in twin screw extruder through melt extruding; Granulation makes the pellet of PP composite material, and its process control condition is: 180～190 ℃ in a district; 200～210 ℃ in two districts, 200～210 ℃ in three districts, 210～215 ℃ in four districts; 210～215 ℃ in five districts, 210～215 ℃ in six districts, 215～225 ℃ in seven districts; 215～225 ℃ in eight districts, 215～225 ℃ in nine districts, 215～225 ℃ in ten districts; The residence time is 1-2 minute, and pressure is 12-18MPa.
Embodiment 4
In super mixer, do to mix 3-5 minute by weight getting Vestolen PP 7052 64%, talcum powder 20%, POE5%, cladded type heat conduction powder 10%, thermo-stabilizer DSTP 0.5%, antioxidant 1010 0.3%, oxidation inhibitor 168 0.2%, afterwards, again in twin screw extruder through melt extruding; Granulation makes the pellet of PP composite material, and its process control condition is: 180～190 ℃ in a district; 200～210 ℃ in two districts, 200～210 ℃ in three districts, 210～215 ℃ in four districts; 210～215 ℃ in five districts, 210～215 ℃ in six districts, 215～225 ℃ in seven districts; 215～225 ℃ in eight districts, 215～225 ℃ in nine districts, 215～225 ℃ in ten districts; The residence time is 1-2 minute, and pressure is 12-18MPa.
Embodiment 5
In super mixer, do to mix 3-5 minute by weight getting Vestolen PP 7052 69%, talcum powder 20%, POE 10%, thermo-stabilizer DSTP 0.5%, antioxidant 1010 0.3%, oxidation inhibitor 168 0.2%, afterwards, again in twin screw extruder through melt extruding; Granulation makes the pellet of PP composite material, and its process control condition is: 180～190 ℃ in a district; 200～210 ℃ in two districts, 200～210 ℃ in three districts, 210～215 ℃ in four districts; 210～215 ℃ in five districts, 210～215 ℃ in six districts, 215～225 ℃ in seven districts; 215～225 ℃ in eight districts, 215～225 ℃ in nine districts, 215～225 ℃ in ten districts; The residence time is 1-2 minute, and pressure is 12-18MPa.
Embodiment 6
In super mixer, do to mix 3-5 minute by weight getting Vestolen PP 7052 38%, talcum powder 30%, POE 23%, cladded type heat conduction powder 8%, thermo-stabilizer DSTP 0.8%, antioxidant 1010 0.1%, oxidation inhibitor 168 0.1%, afterwards, again in twin screw extruder through melt extruding; Granulation makes the pellet of PP composite material, and its process control condition is: 180～190 ℃ in a district; 200～210 ℃ in two districts, 200～210 ℃ in three districts, 210～215 ℃ in four districts; 210～215 ℃ in five districts, 210～215 ℃ in six districts, 215～225 ℃ in seven districts; 215～225 ℃ in eight districts, 215～225 ℃ in nine districts, 215～225 ℃ in ten districts; The residence time is 1-2 minute, and pressure is 12-18MPa.
Embodiment 7
In super mixer, do to mix 3-5 minute by weight getting Vestolen PP 7052 70%, talcum powder 15%, POE 6%, cladded type heat conduction powder 8%, thermo-stabilizer DSTP 0.2%, antioxidant 1010 0.7%, oxidation inhibitor 168 0.1%, afterwards, again in twin screw extruder through melt extruding; Granulation makes the pellet of PP composite material, and its process control condition is: 180～190 ℃ in a district; 200～210 ℃ in two districts, 200～210 ℃ in three districts, 210～215 ℃ in four districts; 210～215 ℃ in five districts, 210～215 ℃ in six districts, 215～225 ℃ in seven districts; 215～225 ℃ in eight districts, 215～225 ℃ in nine districts, 215～225 ℃ in ten districts; The residence time is 1-2 minute, and pressure is 12-18MPa.
Embodiment 8
In super mixer, do to mix 3-5 minute by weight getting Vestolen PP 7052 75%, talcum powder 10%, POE 6%, cladded type heat conduction powder 8%, thermo-stabilizer DSTP 0.3%, antioxidant 1010 0.2%, oxidation inhibitor 168 0.5%, afterwards, again in twin screw extruder through melt extruding; Granulation makes the pellet of PP composite material, and its process control condition is: 180～190 ℃ in a district; 200～210 ℃ in two districts, 200～210 ℃ in three districts, 210～215 ℃ in four districts; 210～215 ℃ in five districts, 210～215 ℃ in six districts, 215～225 ℃ in seven districts; 215～225 ℃ in eight districts, 215～225 ℃ in nine districts, 215～225 ℃ in ten districts; The residence time is 1-2 minute, and pressure is 12-18MPa.
Second group of embodiment is corresponding ABS thermoplastics system, and the prescription of each embodiment of two groups is seen table 2, with a different set of is, two groups are not used filler, and it is identical with one group embodiment specifically to prepare process.
The 3rd group of embodiment is corresponding PA66 thermoplastics system, and the prescription of each embodiment of three groups is seen table 3, with a different set of is, two groups are not used filler, and it is identical with one group embodiment specifically to prepare process.
Above-mentioned performance of composites evaluation method and implementation standard:
With the particulate material of accomplishing granulation as stated above in 90～100 ℃ convection oven dry 2～3 hours in advance, and then the particulate material that drying is good carried out the injection molding sample preparation on injection moulding machine.
The tensile property test is undertaken by ISO 527-2, and specimen size is 150*10*4mm, and draw speed is 50mm/min; The bending property test is undertaken by ISO 178, and specimen size is 80*10*4mm, and rate of bending is 2mm/min, and span is 64mm; Simple beam impact strength is undertaken by ISO 179, and specimen size is 80*6*4mm, and notch depth is 1/3rd of a sample thickness; Heat-drawn wire is undertaken by ISO 75, and specimen size is 120*10*3.0mm, and load is 1.8MPa; The thermal-oxidative aging property of material is undertaken by ISO4577, and specimen size is 50*10*10mm, and probe temperature is 150 ℃; The surface resistivity of material is tested by ISO3915, and test sample guarantees clean no greasy dirt before test.
Comprehensive mechanical performance is passed through the tensile strength of test gained, elongation at break, and modulus in flexure, the numerical value of thermal denaturation temperature and shock strength is passed judgment on; The thermal-oxidative aging property of material is passed judgment on according to the heat oxygen aging resistance time length of measuring by standard: the time is long more, and the heatproof air aging performance of material is good more; The heat conductivility of material is passed judgment on by the thermal conductivity size: thermal conductivity value is big more, and heat-conducting effect is good more.
The prescription of three groups of embodiment and each item The performance test results be each table as follows:
Table 1: the prescription of first group of embodiment and composite property table
| The matrix material title | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| Vestolen PP 7052 (%) | 57 | 64 | 46 | 64 | 69 | 41 | 73 | 78 |
| Talcum powder (%) | 30 | 20 | 20 | 20 | 20 | 30 | 15 | 10 |
| POE（%） | 10 | 10 | 25 | 5 | 10 | 23 | 6 | 6 |
| Cladded type heat conduction powder (%) | 2 | 5 | 8 | 10 | 0 | 5 | 5 | 5 |
| Oxidation inhibitor 168 (%) | 0.5 | 0.7 | 0.8 | 0.5 | 0.5 | 0.8 | 0.2 | 0.3 |
| Antioxidant 1010 (%) | 0.3 | 0.1 | 0.1 | 0.3 | 0.3 | 0.1 | 0.7 | 0.2 |
| Thermo-stabilizer DSTP (%) | 0.2 | 0.2 | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | 0.5 |
| Unnotched impact strength (kJ/m 2) | Constantly | Constantly | Constantly | Constantly | Constantly | Constantly | Constantly | Constantly |
| Notched Izod impact strength (kJ/m 2) | 25 | 26 | 27 | 27 | 25 | 30 | 9 | 10 |
| Tensile strength (MPa) | 21 | 22 | 22 | 21 | 21 | 18 | 20 | 20 |
| Elongation at break (%) | 100 | 120 | 110 | 110 | 110 | 120 | 80 | 85 |
| Flexural strength (MPa) | 29 | 30 | 30 | 31 | 29 | 25 | 26 | 27 |
| Modulus in flexure (MPa) | 1510 | 1500 | 1510 | 1500 | 1520 | 1200 | 1600 | 1400 |
| Thermal-oxidative aging property (>;=500H) | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
| Thermal conductivity (W/(m·K) ） | 8 | 25 | 35 | 30 | 0.2 | 26 | 26 | 25 |
Table 2: the prescription of second group of embodiment and composite property table
| The matrix material title | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| ABS（%） | 87 | 84 | 66 | 84 | 89 | 71 | 79 | 88 |
| ＥＭＡ（%） | 10 | 10 | 25 | 5 | 10 | 23 | 15 | 6 |
| Cladded type heat conduction powder (%) | 2 | 5 | 8 | 10 | 0 | 5 | 5 | 5 |
| Oxidation inhibitor 168 (%) | 0.5 | 0.7 | 0.8 | 0.5 | 0.5 | 0.8 | 0.2 | 0.3 |
| Oxidation inhibitor 619 (%) | 0.3 | 0.1 | 0.1 | 0.3 | 0.3 | 0.1 | 0.7 | 0.2 |
| Thermo-stabilizer (%) | 0.2 | 0.2 | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | 0.5 |
| Unnotched impact strength (kJ/m 2) | Constantly | Constantly | Constantly | Constantly | Constantly | Constantly | Constantly | Constantly |
| Notched Izod impact strength (kJ/m 2) | 32 | 32 | 42 | 27 | 32 | 40 | 35 | 30 |
| Tensile strength (MPa) | 50 | 50 | 35 | 60 | 50 | 35 | 45 | 60 |
| Elongation at break (%) | 15 | 15 | 22 | 12 | 15 | 12 | 17 | 12 |
| Flexural strength (MPa) | 66 | 66 | 41 | 76 | 66 | 40 | 62 | 73 |
| Modulus in flexure (MPa) | 2000 | 2000 | 1750 | 2100 | 2000 | 1750 | 1800 | 2100 |
| Thermal-oxidative aging property (>;=500H) | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
| Thermal conductivity (W/(m·K) ） | 11 | 26 | 32 | 28 | 0.2 | 26 | 27 | 26 |
Table 3: the prescription of the 3rd group of embodiment and composite property table
| The matrix material title | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| PA66（%） | 87 | 84 | 66 | 84 | 89 | 71 | 79 | 88 |
| POE（%） | 10 | 10 | 25 | 5 | 10 | 23 | 15 | 6 |
| Cladded type heat conduction powder (%) | 2 | 5 | 8 | 10 | 0 | 5 | 5 | 5 |
| Oxidation inhibitor 619 (%) | 0.5 | 0.7 | 0.8 | 0.5 | 0.5 | 0.8 | 0.2 | 0.3 |
| Antioxidant 1010 (%) | 0.3 | 0.1 | 0.1 | 0.3 | 0.3 | 0.1 | 0.7 | 0.2 |
| Thermo-stabilizer (%) | 0.2 | 0.2 | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | 0.5 |
| Unnotched impact strength (kJ/m 2) | Constantly | Constantly | Constantly | Constantly | Constantly | Constantly | Constantly | Constantly |
| Notched Izod impact strength (kJ/m 2) | 11 | 11 | 15 | 6 | 11 | 15 | 12 | 6 |
| Tensile strength (MPa) | 65 | 65 | 55 | 75 | 65 | 55 | 60 | 75 |
| Elongation at break (%) | 38 | 38 | 45 | 35 | 38 | 45 | 35 | 35 |
| Flexural strength (MPa) | 46 | 46 | 39 | 48 | 46 | 38 | 41 | 50 |
| Modulus in flexure (MPa) | 6200 | 6200 | 5200 | 6700 | 6200 | 5200 | 6000 | 6800 |
| Thermal-oxidative aging property (>;=500H) | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
| Thermal conductivity (W/(m·K) ） | 10 | 26 | 35 | 30 | 0.2 | 26 | 25 | 25 |
Can find out by three tables; Embodiment 5 (not adding cladded type heat conduction powder) and all the other embodiment of each group of contrast; Along with the adding of cladded type heat conduction powder (being the cladded type thermal conducting material), the thermal conductivity of matrix material obviously increases, and heat conductivility is defective when not adding the heat conduction powder; Each embodiment (except embodiment 5) of each group of contrast; Can find out the increase along with the conductive powder body burden, the thermal conductivity of matrix material increases, heat-conducting effect is better, when content reaches 8%; Thermal conductivity is maximum; When content continued to increase, thermal conductivity changed little, and therefore 8% is the optimum value of conductive powder body burden; In addition, three table explanation cladded type heat conduction powders are applicable to thermoplasticss such as PP, ABS, PA66, and the heat conduction powder does not influence fundamental propertys such as the mechanical property, thermo-oxidative stability of thermoplastic material, and other raw material does not also influence the heat conductivility of heat conduction powder.Embodiment 2,6,7,8 show when identical, other proportion of raw materials of conductive powder body burden not simultaneously; Each item performance is still up to standard; Thermal conductivity is slightly variant; Can find out that other proportion of raw materials is the scope of a tolerance, other raw material of matrix material also influences thermal conductivity to a certain extent simultaneously.
Also can find out among the table 1-3, in thermoplastics, add cladded type heat conduction powder, can improve the thermal conductivity of thermoplastics greatly; The adding of cladded type heat conduction powder does not influence fundamental propertys such as the mechanical property, thermo-oxidative stability of matrix material, and the proportioning of material is the scope of a tolerance, proves that from the side the cladded type thermal conducting material is the good conductive powder body of a kind of performance.
Claims (10)
1. the cladded type thermal conducting material is characterized in that: be made up of mineral powder filling materials layer and the nano level heat conduction powder layer that is coated on the mineral powder filling materials laminar surface.
2. cladded type thermal conducting material according to claim 1 is characterized in that: described nano level heat conduction powder is aluminium nitride AlN or SP 1; Described mineral powder filling materials is common breeze, and Mohs' hardness is 1-3, comprises one or more of talcum powder, lime carbonate, kaolin, Peng Run soil; The particle diameter ratio of described mineral powder filling materials and nano level heat conduction powder is 10:1-50:1.
3. prepare the method for any described cladded type thermal conducting material of claim 1-2, it is characterized in that: the barrel-shaped bearing material rotor high-speed rotational shear through dispersion machine makes nano level heat conduction powder be coated on the mineral filler surface.
4. the preparation method of cladded type thermal conducting material according to claim 3 is characterized in that: comprise the steps that (1) is with nano level heat conduction powder and mineral powder filling materials 1:4 mixing by weight proportion; (2) (1) gained mixture is put into dispersion machine, make the bed of material bear huge impact, compression, shearing force and produce localized hyperthermia, two kinds of materials are fused into particle, and particle becomes sphere, thereby form the cladded type thermal conducting material.
5. the matrix material of cladded type thermal conducting material is characterized in that: be prepared into by following materials of weight proportions:
Thermoplastics 38-90%;
Filler 0-30%;
Toughner 5-25%;
Cladded type heat conduction powder 2-10%;
Thermo-stabilizer 0.1-1.0%;
Oxidation inhibitor 0.1-1.0%;
Wherein, described cladded type heat conduction powder is meant any described cladded type thermal conducting material of claim 1-4.
6. the matrix material of cladded type thermal conducting material according to claim 5 is characterized in that: said thermoplastics is PP, ABS, PC, PA6 or PA66.
7. the matrix material of cladded type thermal conducting material according to claim 5 is characterized in that: said filler is one or more of talcum powder, lime carbonate, magnesium sulfate crystal whisker or wollastonite, and the packing material size scope is the 1-10 micron.
8. the matrix material of cladded type thermal conducting material according to claim 5 is characterized in that: said toughner is a kind of of POE, EPDM or EMA.
9. the matrix material of cladded type thermal conducting material according to claim 5 is characterized in that: the weight proportion of described cladded type heat conduction powder is 5%-8%; The thermal conductivity coefficient of the matrix material of described cladded type thermal conducting material is 25-35 W/ (mK).
10. the method for the matrix material of any described cladded type thermal conducting material of preparation claim 5-9 is characterized in that: may further comprise the steps
(1) weighs raw material by weight ratio;
(2) raw material was done in super mixer mixed 3-5 minute;
(3) mixed raw material is placed dual-screw-stem machine,, make the matrix material of cladded type thermal conducting material through melt extruding granulation.
(4) extrusion pressure is controlled at 12-18MPa, and temperature is 215～225 ℃ when melt extruding granulation.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103304977A (en) * | 2013-07-02 | 2013-09-18 | 中国科学院长春应用化学研究所 | Carbon dioxide-epoxypropane copolymer foamed plastic and preparation method thereof |
| CN105238042A (en) * | 2015-10-27 | 2016-01-13 | 江门市道生工程塑料有限公司 | High-heat-conductivity high-toughness nylon 66 composite material and preparation method therefor |
| WO2017012119A1 (en) * | 2015-07-23 | 2017-01-26 | Dow Global Technologies Llc | Thermally conductive core-shell structured particles |
| CN106977892A (en) * | 2017-04-13 | 2017-07-25 | 上海博息电子科技有限公司 | High-strength insulating heat-conducting plastic, mobile terminal structure part and mobile terminal |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140203A (en) * | 2011-04-26 | 2011-08-03 | 苏州工业园区润佳工程塑料有限公司 | Scraping-resistant polypropylene composite material and preparation method thereof |
-
2011
- 2011-12-30 CN CN2011104527246A patent/CN102533228A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140203A (en) * | 2011-04-26 | 2011-08-03 | 苏州工业园区润佳工程塑料有限公司 | Scraping-resistant polypropylene composite material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 付廷明等: "《火炸药学报》", 《包覆式超细复合粒子的制备》 * |
| 龚兆卓等: "《颗粒学前沿问题研讨会－暨第九届全国颗粒制备与处理研究会》", 《纳米氧化锌/煅烧高岭土复合抗紫外材料的制备工艺研究》 * |
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| WO2017012119A1 (en) * | 2015-07-23 | 2017-01-26 | Dow Global Technologies Llc | Thermally conductive core-shell structured particles |
| CN105238042A (en) * | 2015-10-27 | 2016-01-13 | 江门市道生工程塑料有限公司 | High-heat-conductivity high-toughness nylon 66 composite material and preparation method therefor |
| CN106977892A (en) * | 2017-04-13 | 2017-07-25 | 上海博息电子科技有限公司 | High-strength insulating heat-conducting plastic, mobile terminal structure part and mobile terminal |
| CN107090129A (en) * | 2017-05-15 | 2017-08-25 | 青岛科技大学 | A kind of intermediate phase pitch-based graphite fibre/PP composite material and preparation method thereof |
| CN107090129B (en) * | 2017-05-15 | 2020-06-16 | 青岛科技大学 | Mesophase pitch-based graphite fiber/polypropylene composite material and preparation method thereof |
| CN108624039A (en) * | 2018-04-25 | 2018-10-09 | 中广核俊尔新材料有限公司 | Low linear expansion coefficient, high heat conduction polyamide-based insulating composite material and preparation method thereof |
| CN111363202A (en) * | 2020-02-17 | 2020-07-03 | 内蒙古天之娇高岭土有限责任公司 | Kaolin ceramic microsphere, preparation method thereof and application thereof in heat-conducting filler |
| CN111363202B (en) * | 2020-02-17 | 2022-03-01 | 内蒙古天之娇高岭土有限责任公司 | Kaolin ceramic microsphere, preparation method thereof and application thereof in heat-conducting filler |
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