CN104017331A - Insulation heat-conduction plastic and preparation method thereof - Google Patents
Insulation heat-conduction plastic and preparation method thereof Download PDFInfo
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- CN104017331A CN104017331A CN201410221717.9A CN201410221717A CN104017331A CN 104017331 A CN104017331 A CN 104017331A CN 201410221717 A CN201410221717 A CN 201410221717A CN 104017331 A CN104017331 A CN 104017331A
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Abstract
The invention relates to a novel insulation heat-conduction plastic and a preparation method. The plastic comprises a base material, modified nano alumina particles, modified graphene, hollow glass microballoon, barium stearate, distearoyl isopropoxy aluminate, a stabilizing agent and a flexibilizer. The preparation method adds the modified nano alumina particle and modified graphene through a two-segment mode, so that the insulation heat-conduction plastic with excellent performance can be obtained. The plastic and the preparation method have good industrial application prospect and market value.
Description
Technical field
The present invention relates to a kind of plastics and preparation method thereof, relate more specifically to a kind of insulating and heat-conducting plastics its preparation method, belong to engineering plastics technical field.
Background technology
Plastics (being called again resin) are a kind of purposes macromolecular materials very widely, it has very important effect in a plurality of fields in as numerous areas such as coating, dyestuff, tackiness agent, weavings, thereby application quantity is huge in the world, become current our institute's one of the requisite material of living that affects.
Among miscellaneous plastics, insulativity heat-conducting plastic is owing to having overcome many defects of metallic substance, as poor insulativity, easy to use etc., and popular, such as can be used in the fields such as power industry, electronic industry, thus prospect in an increasingly wide range of applications and potentiality.
On the other hand, fast development along with electronic industry, particularly density, the volume of more and more higher, the electronic devices and components of the integrated level due to microelectronics and circuit are more and more less, thereby have urgent demand for the engineering plastics with good insulation properties, thermal conductivity.Except electronic industry, in power industry, because the voltage of delivery circuit is more and more higher, in the concrete application such as transformation station, for the engineering plastics with high-insulativity, thermal conductive resin, there is equally increasing demand.
Just because of the purposes like this of insulating and heat-conducting plastics, thereby arouse great concern, and carried out a large amount of further investigations, also obtained certain achievement.
CN101899209A discloses a kind of heat-conducting insulation material and preparation method thereof, and described material is comprised of plastic substrate, heat-conductive insulation filling A, heat-conductive insulation filling B, mineral fibre C, coupling agent and lubricant, has good heat conductive insulating performance.
CN103602060A discloses a kind of heat conduction abrasion-proof insulating nylon 6 composite material and preparation method thereof, and described material comprises the compositions such as PA6, fibrous heat conductive filler, insulating heat-conductive powder A, insulating heat-conductive powder B, heat conduction abrasion-resistant powder, coupling agent, compatilizer, oxidation inhibitor, lubricant.
CN103524995A discloses a kind of high heat conductive insulating plastics, described plastics mainly comprise plastic insulation matrix and heat-conductive insulation filling, and its consumption is plastic insulation matrix 100-200 part, heat-conductive insulation filling 200-800 part, coupling agent 2-50 part, oxidation inhibitor 1-5 part, dispersion agent 1-10 part, toughener 20-50 part and processing aid 0.5-5 part.
CN103483809A discloses a kind of high-fluidity polyamide base halogen-free flame-retarded heat-conducting matrix material and preparation method thereof, described material comprises nylon resin, heat conductive filler, halogen-free flame retardants, oxidation inhibitor and coupling agent, and described material has many performances such as thermal conductivity is high, fluidity of molten is high, environmental protection flame retardant.
CN103524836A discloses a kind of antibacterial heat-conducting plastic, described plastics are comprised of HDPE, formaldehyde, aluminium hydroxide, clorafin, triethylene tetramine, zirconium white, methyl alcohol and dicumyl peroxide, described plastics have good antimicrobial property, and it is powerful and have good insulating property not affect machinery.
CN103554900A discloses a kind of moulded heat-conductive insulated plastics containing special construction carbon nanotube filler and preparation method thereof, and described plastics are comprised of fluoropolymer resin, inorganic powder, special construction carbon nanotube, coupling agent, lubricant and oxidation inhibitor.
CN103665850A discloses a kind of heat conductive insulating resin combination, and described composition comprises the compositions such as polymeric amide, filler, coupling agent, toughner, hydrolysis agent, stablizer, lubricant, nucleator.
CN103665741A discloses a kind of insulated type heat conduction complex plastic, described plastic cement comprises ABS, carbon dust, BPS, magnesium hypophosphite, tetramethylolmethane, melamine cyanurate salt, diatomite, sepiolite, polyolefin plastics, dioxane, sodium salicylate, alum and kaolin, and this material can increase substantially heat transfer efficiency.
CN103554907A discloses a kind of heat-conducting plastic, and described plastics comprise thermoplastic resin, steel fiber, halogen-free flame retardants, dispersion agent, lubricant and oxidation inhibitor.
CN103571185A discloses a kind of engineering plastics with high thermal conductivity and preparation method thereof, described plastics comprise matrix resin, mica powder, insulating heat-conductive filler, fire retardant and processing aid, it has excellent heat conductivility and good mechanical property, can meet the requirement of high heat conduction and high flame retardant.
CN103483817A discloses a kind of insulating and heat-conducting plastics and preparation method thereof, described plastics comprise polyphenylene sulfide, epoxy resin, PVC, dione compounds, naphthoic acid cobalt, talcum powder, Vinyl Acetate Copolymer, resorcinol formaldehyde resin, trioxymethylene, dibutyl phthalate, and it has good heat conductivility and insulating property.
As mentioned above, although disclose the multiple plastics with thermal conductive resin and insulating property in prior art, but the research and development for this material still exist the improved demand of proceeding, this is also at present one of the study hotspot in this field and emphasis, the power place that the present invention is accomplished especially, the present invention is intended to develop a kind of novel insulating and heat-conducting plastics, it is by suitable screening and the particular combination of component, make gained plastics unexpectedly show good thermal conductivity and insulativity, there is industrial applications prospect and marketable value widely.
Summary of the invention
In order to obtain novel insulating and heat-conducting plastics and preparation method thereof, the inventor conducts in-depth research this, is paying a large amount of creative works and through going deep into after experimental exploring, thereby is completing the present invention.
Particularly, the present invention relates generally to two aspects.
First aspect, the present invention relates to a kind of New insulated heat-conducting plastic, described insulating and heat-conducting plastics comprises base-material, modified nano-alumina particle, modified graphene, hollow glass micro-ball, barium stearate, distearyl acyl-oxygen sec.-propyl Aluminate, stablizer and toughner.
In described insulating and heat-conducting plastics of the present invention, in weight part, its concrete component concentration is as follows:
In described insulating and heat-conducting plastics of the present invention, described base-material is the mixture of bisphenol A type epoxy resin, polyphthalamide and ABS resin.Wherein, the weight ratio of bisphenol A type epoxy resin, polyphthalamide and ABS resin is 1:1-3:2-4, for example, can be 1:1:2,1:1:3,1:1:4,1:2:2,1:2:3,1:2:4,1:3:2,1:3:3,1:3:4.
In described insulating and heat-conducting plastics of the present invention, the weight part of described modified nano-alumina is 1-3 part, for example, can be 1 part, 2 parts or 3 parts.
Wherein, described modified nano-alumina is to make according to following preparation method, and in other words, the preparation method of described modified nano-alumina is as follows:
Step (1): by aluminum chloride (AlCl
3) or aluminum nitrate (Al (NO
3)
3) join in triethylene glycol, stir and obtain reaction precursor liquid, then the NaOH aqueous solution is joined in this reaction precursor liquid, and at room temperature stir 1-2 hour, then with the temperature rise rate rising temperature of 40-50 ℃/min to 180-220 ℃ and react 2-3 hour, naturally cooling is precipitated, and centrifugation obtains solid; This solid is washed in turn with mixture, ethanol, the deionized water of acetoneand ethyl acetate, dry, obtain nanometer Al
2o
3particle;
Step (2): under ultrasound condition, the nanometer Al that step (1) is made
2o
3particle is dispersed in dehydrated alcohol, after being uniformly dispersed, add wherein the ethanol solution of positive isopropyl silicate, then add ammonium bicarbonate aqueous solution, stirring reaction 2-3 hour at room temperature, centrifugation obtains solid, and gained solid is used to acetone, dehydrated alcohol and deionized water wash, vacuum-drying successively, obtain modified nano-alumina particle, i.e. silica modified nano alumina particles.
In described step (1), the mass percentage concentration of the NaOH aqueous solution can be 10-30%, for example, can be 10%, 20% or 30%.
Wherein, AlCl
3with NaOH or Al (NO
3)
3be 1:3-5 with the mol ratio of NaOH, for example, can be 1:3,1:4 or 1:5.
In described step (2), the nanometer Al of step (1)
2o
3particle is 1:1-3 with the weight ratio of positive isopropyl silicate, for example, can be 1:1,1:1.5,1:2,1:2.5 or 1:3.
Wherein, the amount of the ammonium bicarbonate aqueous solution adding is not particularly limited, as long as it can make reaction system keep alkalescence, for example the pH of reaction system can be 7-9, can be to indefiniteness 7,7.5,8,8.5 or 9.
In described insulating and heat-conducting plastics of the present invention, the weight part of described modified graphene is 0.5-1.5 part, for example, can be 0.5 part, 1 part or 1.5 parts.
Wherein, described modified graphene is to make according to following preparation method, and in other words, the preparation method of described modified graphene is as follows:
Step S1, Graphene is added to the water, making its concentration is 1-1.5mg/mL (being to add 1-1.5mg graphene oxide in every 1mL water), stirs, and obtains graphene solution;
Step S2, by the ethanol solution of tetraethyl orthosilicate, slowly be added drop-wise in the graphene solution obtaining in step S1, ultrasonic dispersion 10-30 minute, then adding mass concentration is the ammonia soln of 15-25%, stirring reaction 1-1.5 hour under room temperature, centrifugation obtains solid; This solid is used to deionized water, absolute ethanol washing in turn, and then vacuum-drying, obtains modified graphene, is also silica modified Graphene.
In described step S2, the mass ratio of Graphene and tetraethyl orthosilicate is 1:20-70, for example, can be 1:20,1:30,1:40,1:50,1:60 or 1:70.
In described step S2, the contained NH of Graphene and ammonia soln
3mass ratio be 1:5-10, for example can be 1:5,1:6,1:7,1:8,1:9 or 1:10.
In described insulating and heat-conducting plastics of the present invention, the weight part of described hollow glass micro-ball is 2-4 part, for example, can be 2 parts, 2.5 parts, 3 parts, 3.5 parts or 4 parts, and its diameter (being granularity) is 10-20 μ m.
Hollow glass micro-ball is a kind of application inorganic raw material very widely, sells source simply, and those skilled in the art can buy the hollow glass micro-ball that obtains all size by business, and this is no longer going to repeat them for its acquisition approach.
In described insulating and heat-conducting plastics of the present invention, the weight part of described barium stearate is 2.5-5.5 part, for example, can be 2.5 parts, 3 parts, 3.5 parts, 4.5 parts, 5 parts or 5.5 parts.
In described insulating and heat-conducting plastics of the present invention, the weight part of described distearyl acyl-oxygen sec.-propyl Aluminate is 1-4 part, for example, can be 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts or 4 parts.
In described insulating and heat-conducting plastics of the present invention, the weight part of described stablizer is 1-3 part, for example, can be 1 part, 1.5 parts, 2 parts, 2.5 parts or 3 parts.
Wherein, described stablizer is selected from di-n-butyltin dilaurate, Sorbitol Powder, trisnonyl phenyl phosphite, two (2,2,6,6-tetramethyl--3-piperidines is amino) any in isophthaloyl amine, most preferably be two (2,2,6,6-tetramethyl--3-piperidines is amino) isophthaloyl amine.
In described insulating and heat-conducting plastics of the present invention, the weight part of described toughner is 2-5 part, for example, can be 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts or 5 parts.
Described toughner is any in polyethers, polysulfones, polyimide, polyphenylene oxide ketone, polyethersulfone, polyvinyl alcohol, polyvinyl acetate, MBS terpolymer (MBS), chlorinatedpolyethylene, vinyl-vinyl acetate copolymer (EVA), most preferably is vinyl-vinyl acetate copolymer (EVA).
Second aspect, the invention still further relates to the preparation method of above-mentioned insulating and heat-conducting plastics, and described method comprises the steps:
Step a: take bisphenol A type epoxy resin, polyphthalamide and ABS resin that weight ratio is 1:1-3:2-4, then join in high-speed mixer and fully mix, obtain base-material;
Step b: add the barium stearate of 2.5-5.5 weight part in the base-material obtaining to step a, the distearyl acyl-oxygen sec.-propyl Aluminate of 1-4 weight part, the stablizer of 1-3 weight part, the toughner of 2-5 weight part, account for the modified nano-alumina particle of total consumption 40-60% and account for the modified graphene of total consumption 70-80%, then in high-speed mixer, fully mix, until evenly, obtain compound, and join in twin screw extruder, to mix to shear and disperse, temperature is 130-150 ℃, obtains mixing masterbatch;
Step c: the modified graphene of the mixing masterbatch that step b is obtained, the modified nano-alumina particle of residual content and residual content mixed after 10-20 minute in static mixer, the hollow glass micro-ball that adds again 2-4 weight part, after continuing to mix, extruding pelletization, obtains described insulating and heat-conducting plastics.
In the preparation method of described insulating and heat-conducting plastics of the present invention, the implication of " accounting for the modified nano-alumina particle of total consumption 40-60% " in described step b refers in this step, and adding modified nano-alumina particle aequum is the amount of the 40-60% of 1-3 weight part.Same, " accounting for the modified graphene of total consumption 70-80% " also has same implication, and adding modification is that model requirement is the 70-80% of 0.5-1.5 weight part.
And in described step c, add the modified nano-alumina particle of residual content and the modified graphene of residual content.So far, in step b and c, added altogether all modified nano-alumina particles and the modified graphene of aequum.
Described insulating and heat-conducting plastics of the present invention and described preparation method, obtained following excellent effect:
1, adding and the selection of suitable amounts by modified nano-alumina particle and modified graphene, make gained plastics there is excellent insulativity and thermal conductivity, and in the art, Graphene has good electroconductibility and naked, but by the modification of the inventive method, when thering is thermal conductive resin, obtained unexpectedly excellent insulativity.
2, test data proves, method of the present invention adds by the two-part of modified nano-alumina particle and modified graphene, has further optimized insulativity and the thermal conductivity of gained plastics, by so processing, has best synergy.
3, compared with prior art, insulating and heat-conducting plastics of the present invention is by suitable selection or the combination of these components, and obtained unexpectedly excellent synergy, there is good heat conduction, insulation function, meet the demand of the numerous areas such as electronic industry, power industry for such plastics, there is good prospects for commercial application and actual value.
Accompanying drawing explanation
Accompanying drawing 1 is the scanning electron microscope (SEM) photograph of the prepared modified nano-alumina particle of preparation example 1 of the present invention.
Embodiment
Below by specific embodiment, the present invention is described in detail; but the purposes of these exemplary embodiments and object are only used for exemplifying the present invention; not real protection scope of the present invention is formed to any type of any restriction, more non-protection scope of the present invention is confined to this.
Preparation example 1: the preparation of modified nano-alumina particle
Step (1): by 1mol aluminum chloride (AlCl
3) join in 400ml triethylene glycol, stir and obtain reaction precursor liquid, then the NaOH aqueous solution that is 20% by mass percentage concentration joins (mol ratio that makes aluminum chloride and NaOH is 1:4) in this reaction precursor liquid, and at room temperature stir 1.5 hours, then with the temperature rise rate rising temperature to 200 of 40 ℃/min ℃ and react 2.5 hours, naturally cooling is precipitated, and centrifugation obtains solid; This solid is washed in turn with mixture, ethanol, the deionized water of acetoneand ethyl acetate, dry, obtain nanometer Al
2o
3particle;
Step (2): under ultrasound condition, the nanometer Al that step (1) is made
2o
3particle is dispersed in dehydrated alcohol, adds wherein ethanol solution (the nanometer Al of positive isopropyl silicate after being uniformly dispersed
2o
3particle is 1:2 with the weight ratio of positive isopropyl silicate), then add ammonium bicarbonate aqueous solution, the pH that makes reaction system is 8.0; By this reaction system stirring reaction 2 hours at room temperature, centrifugation obtains solid, and gained solid is used to acetone, dehydrated alcohol and deionized water wash, vacuum-drying successively, obtain modified nano-alumina particle, i.e. silica modified nano alumina particles.
The scanning electron microscope (SEM) photograph of resulting modified nano-alumina particle is shown in accompanying drawing 1, and as seen from the figure, gained grain diameter is even, regular shape, and granularity is about 7-9nm.
Preparation example 2: the preparation of modified graphene
Step S1, Graphene is added to the water, making its concentration is 1-1.5mg/mL, stirs, and obtains graphene solution;
Step S2, by the ethanol solution of tetraethyl orthosilicate, slowly be added drop-wise in the graphene solution obtaining in step S1, the mass ratio that makes Graphene and tetraethyl orthosilicate is 1:40, then ultrasonic dispersion is 20 minutes, adding mass concentration is 20% ammonia soln, and its amount should make Graphene and NH wherein
3mass ratio be 1:8.Under room temperature, stirring reaction is 1 hour, and centrifugation obtains solid; This solid is used to deionized water, absolute ethanol washing in turn, and then vacuum-drying, obtains modified graphene, is also silica modified Graphene.
Embodiment 1
Step a: take bisphenol A type epoxy resin, polyphthalamide and ABS resin that weight ratio is 1:2:3, then join in high-speed mixer and fully mix, obtain base-material;
Step b: the barium stearate that adds 2.5 weight parts in the base-material obtaining to step a, the distearyl acyl-oxygen sec.-propyl Aluminate of 1 weight part, the stablizer two (2 of 1 weight part, 2, 6, 6-tetramethyl--3-piperidines is amino) isophthaloyl amine, the toughner EVA of 2 weight parts, the above-mentioned modified nano-alumina particle making of 0.4 weight part and the above-mentioned modified graphene making of 0.35 weight part, then in high-speed mixer, fully mix, until evenly, obtain compound, and join in twin screw extruder, to mix to shear and disperse, temperature is 130 ℃, obtain mixing masterbatch,
Step c: the above-mentioned modified nano-alumina particle making of the mixing masterbatch that step b is obtained, 0.6 weight part and the above-mentioned modified graphene making of 0.15 weight part mixed after 10 minutes in static mixer, adding 2 weight part granularities is the hollow glass micro-ball of 10 μ m again, after continuing to mix, extruding pelletization, obtain described insulating heat-conductive sample, called after SL-1.
Embodiment 2
Step a: take bisphenol A type epoxy resin, polyphthalamide and ABS resin that weight ratio is 1:2:3, then join in high-speed mixer and fully mix, obtain base-material;
Step b: add the barium stearate of 4 weight parts in the base-material obtaining to step a, the distearyl acyl-oxygen sec.-propyl Aluminate of 3 weight parts, the stablizer two (2 of 2 weight parts, 2,6,6-tetramethyl--3-piperidines amino) isophthaloyl amine, the toughner EVA of 3 weight parts are, the above-mentioned modified nano-alumina particle making of 1 weight part and the above-mentioned modified graphene making of 0.7 weight part, then in high-speed mixer, fully mix, until evenly, obtain compound, and join in twin screw extruder, to mix to shear and disperse, temperature is 140 ℃, obtains mixing masterbatch;
Step c: the above-mentioned modified nano-alumina particle making of the mixing masterbatch that step b is obtained, 1 weight part and the above-mentioned modified graphene making of 0.3 weight part mixed after 15 minutes in static mixer, adding 3 weight part granularities is the hollow glass micro-ball of 15 μ m again, after continuing to mix, extruding pelletization, obtain described insulating heat-conductive sample, called after SL-2.
Embodiment 3
Step a: take bisphenol A type epoxy resin, polyphthalamide and ABS resin that weight ratio is 1:2:3, then join in high-speed mixer and fully mix, obtain base-material;
Step b: the barium stearate that adds 5.5 weight parts in the base-material obtaining to step a, the distearyl acyl-oxygen sec.-propyl Aluminate of 4 weight parts, the stablizer two (2 of 3 weight parts, 2, 6, 6-tetramethyl--3-piperidines is amino) isophthaloyl amine, the toughner EVA of 5 weight parts, the above-mentioned modified nano-alumina particle making of 1.8 weight parts and the above-mentioned modified graphene making of 1.2 weight parts, then in high-speed mixer, fully mix, until evenly, obtain compound, and join in twin screw extruder, to mix to shear and disperse, temperature is 150 ℃, obtain mixing masterbatch,
Step c: the above-mentioned modified nano-alumina particle making of the mixing masterbatch that step b is obtained, 1.2 weight parts and the above-mentioned modified graphene making of 0.3 weight part, in static mixer, mix after 20 minutes, adding 4 weight part granularities is the hollow glass micro-ball of 20 μ m again, after continuing to mix, extruding pelletization, obtain described insulating heat-conductive sample, called after SL-3.
Comparative example 1-3
Except aluminum oxide nanoparticle not being carried out to (nano alumina particles that only adds identical weight part) modification, with the same procedure with embodiment 1-3, implemented comparative example 1-3 respectively, according to the method for embodiment 1, implemented comparative example 1, according to the method for embodiment 2, implemented comparative example 2 and implemented comparative example 3 according to the method for embodiment 3 that (following comparative example has same corresponding relation, list no longer one by one below), obtain respectively sample D1-D3.
Comparative example 4-6
Except Graphene not being carried out, modification (Graphene that only adds identical weight part), having implemented comparative example 4-6 respectively with the same procedure with embodiment 1-3, obtain respectively sample D4-D6.
Comparative example 7-9
Except not adding the above-mentioned modified oxidized aluminum nanoparticles making, with the same procedure with embodiment 1-3, implemented comparative example 7-9 respectively, obtain respectively plastics D7-D9.
Comparative example 10-12
Except not adding the above-mentioned modified graphene making, with the same procedure with embodiment 1-3, implemented comparative example 10-12 respectively, obtain respectively sample D10-D12.
Comparative example 13-15
Except respectively in step b the disposable modified oxidized aluminum nanoparticles that adds required total amount and the disposable modified graphene that adds required total amount (not adding modified oxidized aluminum nanoparticles and modified graphene in step c), with the same way with embodiment 1-3, implement respectively comparative example 13-15 respectively, obtained respectively sample D13-D15.
Comparative example 16-18
Except respectively in step c the disposable modified oxidized aluminum nanoparticles that adds required total amount and the disposable modified graphene that adds required total amount (not adding modified oxidized aluminum nanoparticles and modified graphene in step b), with the same way with embodiment 1-3, implement respectively comparative example 16-18 respectively, obtained respectively sample D16-D18.
Comparative example 19-21
Except not adding hollow glass micro-ball, with the same way with embodiment 1-3, implemented respectively comparative example 19-21 respectively, obtain respectively sample D19-D21.
Performance test
By above-described embodiment and the resulting sample injection moulding of comparative example, obtain test plastic sample respectively.
(1) mensuration of thermal conductivity
According to ASTM E1461 standard, with Hot-disk TPS1500 thermal conductance survey meter, measure the thermal conductivity of each plastic sample.
(2) mensuration of volume specific resistance
With reference to IEC60093 standard, measure the volume specific resistance of each plastic sample.
(3) mensuration of tensile strength
According to GB1040 standard, with stretching strength measurement instrument, measure the tensile strength of each plastic sample.
Test result to all embodiment and comparative example is as shown in the table:
Related " 180-187MPa " of note: * is that the tensile strength of D1-D9 is interval.
As can be seen here, when using the aluminum oxide nanoparticle of modification and the Graphene of modification, can obtain the synergy of excellent heat conduction and insulation simultaneously.And when any while not carrying out modification, insulating property have significantly and reduce.
Also can find out, the two-part of modified oxidized aluminum nanoparticles and modified graphene adds can significantly improve heat conduction and insulating property simultaneously.And all add fashionablely when disposable, cause heat conduction and insulating property to have significantly and reduce.
In addition, for tensile strength, discovery is not when adding modified graphene, and intensity has remarkable reduction, and the reticulated structure of this proof Graphene can improve intensity significantly.
Comprehensively above-mentioned, the present invention adopts described base-material, modified nano-alumina, modified graphene, hollow glass micro-ball, barium stearate, distearyl acyl-oxygen sec.-propyl Aluminate, stablizer and toughner, and adopt specific two-part to add method and obtained the insulating and heat-conducting plastics of excellent performance, there is industrial applications prospect and marketable value very widely.
The purposes that should be appreciated that these embodiment only limits the scope of the invention for the present invention being described but not being intended to.In addition; also should understand; after having read technology contents of the present invention, those skilled in the art can make various changes, modification and/or modification to the present invention, within these all equivalent form of values fall within the protection domain that the application's appended claims limits equally.
Claims (10)
1. a New insulated heat-conducting plastic, described insulating and heat-conducting plastics comprises base-material, modified nano-alumina particle, modified graphene, hollow glass micro-ball, barium stearate, distearyl acyl-oxygen sec.-propyl Aluminate, stablizer and toughner.
2. insulating and heat-conducting plastics as claimed in claim 1, is characterized in that: in weight part, its concrete component concentration is as follows:
3. insulating and heat-conducting plastics as claimed in claim 1 or 2, it is characterized in that: described base-material is the mixture of bisphenol A type epoxy resin, polyphthalamide and ABS resin, wherein, the weight ratio of bisphenol A type epoxy resin, polyphthalamide and ABS resin is 1:1-3:2-4.
4. the insulating and heat-conducting plastics as described in claim 1-3, is characterized in that: the preparation method of described modified nano-alumina is as follows:
Step (1): by aluminum chloride (AlCl
3) or aluminum nitrate (Al (NO
3)
3) join in triethylene glycol, stir and obtain reaction precursor liquid, then the NaOH aqueous solution is joined in this reaction precursor liquid, and at room temperature stir 1-2 hour, then with the temperature rise rate rising temperature of 40-50 ℃/min to 180-220 ℃ and react 2-3 hour, naturally cooling is precipitated, and centrifugation obtains solid; This solid is washed in turn with mixture, ethanol, the deionized water of acetoneand ethyl acetate, dry, obtain nanometer Al
2o
3particle;
Step (2): under ultrasound condition, the nanometer Al that step (1) is made
2o
3particle is dispersed in dehydrated alcohol, after being uniformly dispersed, add wherein the ethanol solution of positive isopropyl silicate, then add ammonium bicarbonate aqueous solution, stirring reaction 2-3 hour at room temperature, centrifugation obtains solid, and gained solid is used to acetone, dehydrated alcohol and deionized water wash, vacuum-drying successively, obtain modified nano-alumina particle, i.e. silica modified nano alumina particles.
5. insulating and heat-conducting plastics as claimed in claim 4, is characterized in that: in described step (1), and AlCl
3with NaOH or Al (NO
3)
3be 1:3-5 with the mol ratio of NaOH.
6. the insulating and heat-conducting plastics as described in claim 4 or 5, is characterized in that: in described step (2), and the nanometer Al of step (1)
2o
3particle is 1:1-3 with the weight ratio of positive isopropyl silicate.
7. the insulating and heat-conducting plastics as described in claim 1-6 any one, is characterized in that: the preparation method of described modified graphene is as follows:
Step S1, Graphene is added to the water, making its concentration is 1-1.5mg/mL, stirs, and obtains graphene solution;
Step S2, by the ethanol solution of tetraethyl orthosilicate, slowly be added drop-wise in the graphene solution obtaining in step S1, ultrasonic dispersion 10-30 minute, then adding mass concentration is the ammonia soln of 15-25%, stirring reaction 1-1.5 hour under room temperature, centrifugation obtains solid; This solid is used to deionized water, absolute ethanol washing in turn, and then vacuum-drying, obtains modified graphene.
8. insulating and heat-conducting plastics as claimed in claim 7, is characterized in that: in described step S2, the mass ratio of Graphene and tetraethyl orthosilicate is 1:20-70.
9. insulating and heat-conducting plastics as claimed in claim 7 or 8, is characterized in that: in described step S2, and the contained NH of Graphene and ammonia soln
3mass ratio be 1:5-10.
10. the preparation method of insulating and heat-conducting plastics described in claim 1-9 any one, described method comprises the steps:
Step a: take bisphenol A type epoxy resin, polyphthalamide and ABS resin that weight ratio is 1:1-3:2-4, then join in high-speed mixer and fully mix, obtain base-material;
Step b: add the barium stearate of 2.5-5.5 weight part in the base-material obtaining to step a, the distearyl acyl-oxygen sec.-propyl Aluminate of 1-4 weight part, the stablizer of 1-3 weight part, the toughner of 2-5 weight part, account for the modified nano-alumina particle of total consumption 40-60% and account for the modified graphene of total consumption 70-80%, then in high-speed mixer, fully mix, until evenly, obtain compound, and join in twin screw extruder, to mix to shear and disperse, temperature is 130-150 ℃, obtains mixing masterbatch;
Step c: the modified graphene of the mixing masterbatch that step b is obtained, the modified nano-alumina particle of residual content and residual content mixed after 10-20 minute in static mixer, the hollow glass micro-ball that adds again 2-4 weight part, after continuing to mix, extruding pelletization, obtains described insulating and heat-conducting plastics.
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| CN201410221717.9A CN104017331B (en) | 2014-05-23 | 2014-05-23 | A kind of insulating and heat-conducting plastics and its preparation method |
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|---|---|---|---|
| CN201410221717.9A CN104017331B (en) | 2014-05-23 | 2014-05-23 | A kind of insulating and heat-conducting plastics and its preparation method |
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| CN106269840A (en) * | 2016-08-29 | 2017-01-04 | 付融冰 | A kind of electrode restorative procedure of contaminated soil or subsoil water |
| CN106336630A (en) * | 2016-08-29 | 2017-01-18 | 付融冰 | Conducting material and production and application thereof |
| CN106436339A (en) * | 2016-10-25 | 2017-02-22 | 东台市富安合成材料有限公司 | PVC artificial leather foaming layer and preparation method thereof |
| CN108314776A (en) * | 2018-01-10 | 2018-07-24 | 苏州益可泰电子材料有限公司 | Electronic material glue and preparation method thereof |
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| CN109181134A (en) * | 2018-09-05 | 2019-01-11 | 南京工业大学 | A kind of thermal-conductive polymer matrix composites and preparation method thereof |
| CN109852002A (en) * | 2019-01-02 | 2019-06-07 | 浙江华正新材料股份有限公司 | A kind of preparation method of high-strength light laminated composite board material |
| CN109852002B (en) * | 2019-01-02 | 2021-06-08 | 浙江华正新材料股份有限公司 | Preparation method of light high-strength laminated composite board |
| CN112876812A (en) * | 2021-01-20 | 2021-06-01 | 广州市机电高级技工学校 | Outer covering heat conduction fixing piece for new energy automobile battery and manufacturing method thereof |
| CN112980142A (en) * | 2021-02-10 | 2021-06-18 | 广汉市盛泰塑化科技有限公司 | Preparation method and application of insulating high-thermal-conductivity plastic particles |
| CN115926374A (en) * | 2022-11-22 | 2023-04-07 | 临沂利方塑胶制品有限公司 | Insulating plastic material and preparation method thereof |
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Effective date of registration: 20151203 Address after: Wang Zhen Huangdao District 266000 in Shandong province Qingdao City, Zhu Yang Cun Applicant after: Qingdao Ruiyixin New Material Technology Co.,Ltd. Address before: 266000 Shandong city of Qingdao province high tech Industrial Development Zone Kexing Road South, Siyuan Road North Applicant before: Qingdao Compoly High Performance Polymers Co., Ltd. |
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