CN106118042A - A kind of plastic and preparation method thereof and the housing that can dispel the heat - Google Patents
A kind of plastic and preparation method thereof and the housing that can dispel the heat Download PDFInfo
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- CN106118042A CN106118042A CN201610496871.6A CN201610496871A CN106118042A CN 106118042 A CN106118042 A CN 106118042A CN 201610496871 A CN201610496871 A CN 201610496871A CN 106118042 A CN106118042 A CN 106118042A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The present invention relates to heat sink material technical field, particularly relate to a kind of plastic and preparation method thereof and the housing that can dispel the heat, it is possible to increase the heat dispersion of plastic and mechanical performance.The embodiment of the present invention provides a kind of plastic, and described plastic includes plastic raw materials and heat radiation component, and described heat radiation component includes: nanometer silicon carbide and Nano titanium nitride, and wherein, the particle diameter of described nanometer silicon carbide and Nano titanium nitride is between 10nm 900nm.
Description
Technical field
The present invention relates to technical field of heat dissipation, particularly relate to a kind of plastic and preparation method thereof and the shell that can dispel the heat
Body.
Background technology
Along with the fast development of science and technology, densification and the miniaturization degree of integrated circuit are more and more higher, electronic component
Become less and run with higher speed so that it is the requirement to heat radiation is more and more higher.In order to heat is distributed as early as possible from thermal source
Going out, current electronic component all uses the material that heat conductivity is higher to make, to improve radiating efficiency, and such as metallic aluminium, but,
Due to metallic aluminium weight compared with big, design freedom is relatively low, production efficiency is low, and processing cost is high, and plastic have design from
The feature poor by degree height, easy-formation processing, light weight, low cost and heat conductivility, therefore, the heat conductivility of raising plastic
And plastic is applied to electronic component become people research focus.
In the prior art, the heat conductivility of described plastic is typically improved by two kinds of methods, Yi Zhongwei: exploitation
Or synthesis itself has a resin matrix of relatively high heat transfer/heat conductivility, such as polyacetylene, polyaniline, polypyrrole etc., but these materials
Expect the most expensive and unstable properties, be not suitable for commercial application；Another kind is: is introduced directly in resin matrix and has
Heat transfer or the filler powder of heat conductivility, such as, aluminium oxide, bismuth oxide, beryllium oxide, aluminium powder, bronze, carborundum, glass microballoon, charcoal
Fine and ceramic etc., although these materials can improve the heat conductivility of plastic, but heat gathering is not easy to shed, and dissipates
Hot property is the most undesirable, limits the application of plastic.
Summary of the invention
Embodiments provide a kind of plastic and preparation method thereof and the housing that can dispel the heat, it is possible to increase plastics
The heat dispersion of goods and mechanical performance.
First aspect, embodiments provides a kind of plastic, and described plastic includes plastic raw materials and dissipates
Hot component, described heat radiation component includes: nanometer silicon carbide and Nano titanium nitride, wherein, described nanometer silicon carbide and nano silicon nitride
The particle diameter of titanium is between 10nm-900nm.
Preferably, the particle diameter of described nanometer silicon carbide and Nano titanium nitride is between 10nm-600nm.
Optionally, described Nano titanium nitride mass fraction in described heat radiation component is 15-40%.
Preferably, described plastic raw materials is 100-300 part, and described heat radiation component is 10-30 part.
Optionally, described heat radiation component is uniformly filled in described plastic raw materials, and is wrapped by described plastic raw materials.
Preferably, described plastic also includes additive, and described additive is selected from halogen-free flame retardants, dispersant, lubrication
One or more in agent and antioxidant.
Further, described additive includes the halogen-free flame retardants of 10-15 part, the dispersant of 2-4 part, the lubrication of 2-3 part
Agent and the antioxidant of 1-2 part.
Second aspect, embodiments provides the preparation method of a kind of plastic as above, including:
Step 1) heat radiation component and plastic raw materials are mixed in the molten state, and the acquisition mixture that stirs；Described
Heat radiation component includes: nanometer silicon carbide and Nano titanium nitride, wherein, the particle diameter of described nanometer silicon carbide and Nano titanium nitride exists
Between 10nm-900nm；
Step 2) described mixture machine-shaping is obtained plastic.
Preferably, described step 1) also include before: described heat radiation component is carried out pretreatment；
Specifically, will dispel the heat, component is dispersed in organic solvent, and volatilization removes organic solvent, it is thus achieved that pretreated
Heat radiation component.
Optionally, described by dispersed for component of dispelling the heat in organic solvent before also include: coupling agent is dissolved in institute
State in organic solvent.
Preferably, described step 1) also include before: described plastic raw materials is toasted 100-120min at 105-120 DEG C,
Remove moisture.
Optionally, described heat radiation component and plastic raw materials are mixed in the molten state after also include: to mixed system
Middle interpolation additive, one or more in halogen-free flame retardants, dispersant, lubricant and antioxidant of described additive.
The third aspect, embodiments provides a kind of housing dispelled the heat, is made up of plastic as above.
Embodiments provide a kind of plastic and preparation method thereof and the housing that can dispel the heat, in this plastic
Containing heat radiation component, described heat radiation component includes nanometer silicon carbide and Nano titanium nitride, and carborundum has heat conductivity height, insulation
Property strong, mechanical strength is high, it is aging to be difficult to, can produce the feature of higher far-infrared spectrum, titanium nitride has high-melting-point, high hard
Degree, stability at elevated temperature and excellent heat conduction, electric conductivity, described carborundum and described titanium nitride at low temperatures can be by warm
Amount is converted into the infrared radiation of 8-15 micron and goes out such that it is able to improve radiating effect, described heat radiation component is added into institute
Stating in plastic raw materials so that the normal emittance of the surface of plastic products obtained can reach more than 0.9, normal emittance is more
Height, in its unit are, the heat of radiation is the most, and radiating effect is the best.Although overcoming in prior art heat transfer efficiency relatively
Height, but the defect that radiating effect is the most relatively low.
Accompanying drawing explanation
The schematic flow sheet of the preparation method of a kind of plastic that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
Now will be provided in detail the reference of embodiment of the present invention, one or more example is described below.There is provided every
One example is the unrestricted present invention as explanation.It practice, it will be apparent to one skilled in the art that, can be right
The present invention carries out numerous modifications and variations without departing from the scope of the present invention or spirit.Such as, as the portion of an embodiment
Point and illustrate or describe feature may be used in another embodiment, produce further embodiment.Therefore, based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Material involved by the embodiment of the present invention all can obtain by commercial sources or by applicant.
First aspect, embodiments provides a kind of plastic, and described plastic includes plastic raw materials and dissipates
Hot component, described heat radiation component includes: nanometer silicon carbide and Nano titanium nitride, wherein, described nanometer silicon carbide and nano silicon nitride
The particle diameter of titanium is between 10nm-900nm.
It should be noted that for regular ball shaped nano carborundum and Nano titanium nitride granule, its particle diameter i.e. refers to that it is straight
Footpath；For irregular granule, particle diameter be referred in prior art the definition about particle diameter, its definition method of example can
There to be following three kinds: projected diameter, geometry equivalent footpath or equivalent physical footpath.Wherein, projected diameter: refer to that granule is seen under the microscope
The particle diameter observed；Geometry equivalent footpath: the diameter of spheroidal particle when taking equal with a certain geometric sense of granule；Equivalent physical footpath:
The diameter of spheroidal particle when taking equal with a certain physical quantity of granule.The embodiment of the present invention not definition to particle diameter limits
Fixed, it can be diameter, it is also possible to be any one in projected diameter, geometry equivalent footpath or equivalent physical footpath.
Embodiments provide a kind of plastic, containing heat radiation component, described heat radiation in this described plastic
Component includes nanometer silicon carbide and Nano titanium nitride, and carborundum has that heat conductivity is high, insulating properties is strong, mechanical strength is high, is difficult to
Aging, the feature of higher far-infrared spectrum can be produced, titanium nitride has high-melting-point, high rigidity, stability at elevated temperature and excellent
Good heat conduction, electric conductivity, converting heat can be the red of 8-15 micron by described carborundum and described titanium nitride at low temperatures
UV radiation is gone out such that it is able to improves radiating effect, described heat radiation component is added in described plastic raw materials so that obtained
The normal emittance of the surface of plastic products obtained can reach more than 0.9, and normal emittance is the highest, radiation in its unit are
Heat is the most, and radiating effect is the best.Although it is higher to overcome heat transfer efficiency in prior art, but radiating effect is the most relatively low
Defect.
Further, the heat radiation component that the embodiment of the present invention provides is nanoscale, and specific surface area is relatively big, therefore, fills
The plastic having this heat radiation component can absorb a small amount of moisture in air, can the great nanoscale of quantity of formation on surface
" water-vaporizer ", disperses a part of heat by the evaporation of moisture, thus further enhances the radiating effect of plastic.
In one embodiment of the invention, described plastic raw materials is 100-300 part, and described heat radiation component is 1-30 part.Wherein,
Part represents a unit, and 1 part can be 1kg, it is also possible to for 1g, the most only represent the proportionate relationship between two kinds of materials,
In the embodiment of the present invention, described plastic raw materials carries out mixing the described plastic obtained with this number with described heat radiation component
Heat dispersion and mechanical performance optimal, the raising contribution that described heat radiation component crosses multipair heat dispersion and mechanical performance is little.
Wherein, the mass ratio of described nanometer silicon carbide and Nano titanium nitride is not limited.
In one embodiment of the invention, described Nano titanium nitride mass fraction in described heat radiation component is 15-40%.
So, the heat dispersion of heat radiation component is optimal, and the mass fraction of described Nano titanium nitride is too small or excessive, all can be to compositions
Heat radiation produce impact.
Preferably, the particle diameter of nanometer silicon carbide and Nano titanium nitride is between 10nm-600nm.
In this particle size range, it is possible to increase specific surface area, improve described normal emittance, thus improve radiating effect,
Particle diameter is too small can improve difficulty of processing.
It is further preferred that the particle diameter of nanometer silicon carbide and Nano titanium nitride is between 50nm-200nm.
In general, the particle diameter of nanometer silicon carbide and Nano titanium nitride is the least, and specific surface area is the biggest, and its heat dispersion is more
Good, when the two being added in other materials, the mechanical performance of the composite of formation also can be more excellent.But, particle diameter is more
Little, the requirement to preparation condition is the harshest, and, when particle diameter little to certain limit time, the size of particle diameter is on the impact of performance not
Obvious again, such as, it is the carborundum of 50nm for carborundum that particle diameter is 10nm and the heat radiation component of titanium nitride composition and particle diameter
For the heat radiation component of titanium nitride composition, the performance of the two is more or less the same.Therefore, the embodiment of the present invention is considering preparation
In the case of condition and performance, it is believed that when the particle diameter of nanometer silicon carbide and Nano titanium nitride is between 50nm-200nm, specific surface
Long-pending relatively big, radiating effect can reach optimal.
Also can add nano titanium oxide in the heat radiation component of above-mentioned offer, the most preferably, above-mentioned heat radiation component is also wrapped
Including nano titanium oxide, the particle diameter of nano titanium oxide is between 10nm-800nm.
Nano titanium oxide is added in heat radiation component, the performance of heat radiation component can be greatly enhanced.This is because nano-sized carbon
SiClx and Nano titanium nitride, during being radiated in surrounding with ultrared form by heat, also can absorb ring around
Border is radiated the infrared ray on its surface, and owing to adding nano titanium oxide, its special appearance can reflect a part and be transmitted into
The infrared ray on its surface；Meanwhile, nano titanium oxide can also reflect the ultraviolet in a part of environment, thus reduces extraneous spoke
Be mapped to the electromagnetic wave on its surface so that on identical area of dissipation, needed for the heat that distributes reduce, radiating effect increases
By force.Therefore, using include titanium dioxide heat radiation component as Inorganic Fillers Filled in plastic raw materials, polymer can be made to have
More excellent heat dispersion, is additionally, since the ultraviolet minimizing that its surface receives, its ageing resistace can be made to strengthen, extend
Service life.
Wherein, the nano titanium oxide of the embodiment of the present invention preferred anatase crystal formation.Use the nanometer two of this crystalline structure
Titanium oxide, has the effect of the reflection external world radiation of excellence, it is possible to launched by the heat that the external world conducts, improves further and dissipate
Thermal effect.
It should be noted that the amount of the nano titanium oxide added in above-mentioned heat radiation component does not limits.Preferably, on
Stating the mass fraction of nano titanium oxide in heat radiation component is 5%-25%.In the range of this mass fraction, this heat radiation component
Performance can be more excellent, more than 25% after launching effect improve inconspicuous.
Wherein, described plastic raw materials is not limited.
In one embodiment of the invention, described plastic raw materials is thermoplastic resin.Described thermoplastic resin have be heated soft
No matter change, the performance of hardening by cooling, and not chemically reactive, heat and cooling repeat how many times, all can keep this
Performance.Described thermoplastic resin machine-shaping is convenient, has higher mechanical performance.
In another embodiment of the present invention, described thermoplastic resin is selected from polyethylene, polrvinyl chloride, polystyrene, polyamides
One or several in amine, polyformaldehyde, Merlon, polyphenylene oxide, polysulfones, polyurethane fiber, rubber.
Preferably, described thermoplastic resin is polyamide.Polyamide is commonly called as nylon, and its mechanical strength is high, good toughness, has
Good mechanical property.When being used for, as plastic, the housing that can dispel the heat, being not susceptible to lose, service life is longer.
It is further preferred that described polyamide can be polyhexamethylene adipamide, polyamide-6 or poly-decanedioyl oneself two
Amine.These are several for most commonly seen several polyamide materials, and cost is relatively low.
Wherein, not limiting the combination of described heat radiation component with described plastic raw materials, described heat radiation component is permissible
It is dispersed in the surface of described plastic raw materials, it is also possible to be filled in described plastic raw materials.
In one embodiment of the invention, described heat radiation component is uniformly filled in described plastic raw materials, and by described plastics
Raw material wraps.
In embodiments of the present invention, described heat radiation component is dispersed in described plastic raw materials, due to this heat radiation component
Being all inorganic rigid nanoparticle, its particle size is little, modulus is high, stronger with the interface binding power of plastic raw materials such that it is able to
Improve the mechanical performance of plastic.
In one embodiment of the invention, described plastic also includes coupling agent.Coupling agent is that a class has two dissimilarity
The material of matter functional group, the maximum feature of its molecular structure is two groups different containing chemical property in molecule, and one is
The group of parent's inorganic matter, easy and mineral surfaces chemically reactive；Another is organophilic group, can with in plastic raw materials
Synthetic resin other polymer generation chemical reaction or generate hydrogen bond be dissolved in wherein.Therefore coupling agent is referred to as " molecule
Bridge ", in order to improve the interface interaction between inorganic matter and Organic substance, thus it is greatly improved the performance of composite, such as physical property
Can (mechanical performance), electrical property, hot property, optical property etc..
If containing coupling agent in plastic, heat radiation component can be passed through hydrogen bond with described plastic raw materials by described coupling agent
Or the form of chemical bond couples together such that it is able to improve the interface knot of described heat radiation component and described plastic raw materials further
Make a concerted effort, improve the mechanical performance of described plastic.Described coupling agent can be added in described heat radiation component, or it is former to be added in plastics
In material, or both combine.
In one embodiment of the invention, described coupling agent is 0.5-5 part.
In another embodiment of the present invention, described coupling agent is even selected from silane coupler, titanate coupling agent and Aluminate
Any one in connection agent or several mixing.
Wherein, silane coupler can be aminopropyl triethoxysilane, γ-glycidyl ether oxygen propyl trimethoxy silicon
Alkane, γ-(methacryloxypropyl) propyl trimethoxy silicane, appointing in N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane
One or more mixing.Wherein, aminopropyl triethoxysilane can increase substantially the dry and wet state bending strength of reinforced plastics, resist
The physical and mechanical property such as Compressive Strength, shear strength and hygrometric state electric property, and improve filler wettability in the polymer and divide
Dissipate property.γ-glycidyl ether oxygen propyl trimethoxy silicane is for inorganics filled thermoplastic, improvement glass fibers
The strength character of the hard composite that dimension rove strengthens.γ-(methacryloxypropyl) propyl trimethoxy silicane has for improvement
Machine material and the adhesive property of inorganic material, it is organic high poly-that N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane is used for coupling
Thing and inorganic matter, make the two chemical bonding be integrally formed, to improve polymeric various physical and mechanical properties, electric property, resistance to
Aqueous, resistance to ag(e)ing etc..
Titanate coupling agent can be isopropyl three oleic acid acyloxy titanate esters, isopropyl three (dioctylphyrophosphoric acid acyl-oxygen
Base) titanate esters, Di(dioctylpyrophosphato) ethylene titanate, Di(dioctylpyrophosphato) ethylene titanate and
Any one in the chelate of triethanolamine or several mixing.These titanate coupling agents can increase the flow variables of processing,
Improve mechanical performance.
Aluminate coupling agent can be distearyl acyl-oxygen aluminum isopropoxide acid esters.The acid of described distearyl acyl-oxygen aluminum isopropoxide
Ester steady quality, has that color is shallow, nontoxic, taste is little and to the cooperation thermal stabilization of polyurethane and lubricity, applied widely, need not
Diluent, easy to use, cheap.
In another embodiment of the present invention, described plastic also includes additive, and described additive is selected from halogen-free flameproof
One or more in agent, dispersant, lubricant and antioxidant.In embodiments of the present invention, by adding additive, it is possible to
Reinforced plastics goods performance in preparation process and end properties, such as: when described plastic also includes halogen-free flameproof
When agent and dispersant, it is possible to strengthen the fire protecting performance of described plastic, and each group in described plastic can be improved
Divide the dispersion effect in preparation process so that the distribution of plastic component is more uniform；The most such as, when described plastic also
During including antioxidant, it is possible to increase the antioxygenic property of described plastic.
In another embodiment of the present invention, described additive include the halogen-free flame retardants of 10-15 part, the dispersant of 2-4 part,
The lubricant of 2-3 part and the antioxidant of 1-2 part.
Wherein described halogen-free flame retardants, dispersant, lubricant and antioxidant are not limited.Can mould according to described
Material raw material character in the course of processing is determined.
Preferably, halogen-free flame retardants can be the poly-phosphorus-nitrogen compound of Halogen, and described dispersant can be silicone oil, described lubrication
Agent can be silicone powder, and described antioxidant can be selected from N, N-1,6-inferior hexyl-bis-[3-(3,5-di-t-butyl-4-hydroxy benzeness
Base)] one or both in propionic acid amide. and tricresyl phosphite (2,4-di-tert-butyl) ester.Wherein, Halogen poly-phosphorus-nitrogen compound tool
There are environmental protection, the efficient and feature of low cost；As dispersant, described silicone oil has that the viscous coefficient of temperature is little, high-low temperature resistant, antioxidation, sudden strain of a muscle
Point is high, volatility is little, good insulating, surface tension are little, nontoxic；Silicone powder has high-efficiency lubricating effect, compensate for silicone oil conduct
The defect that lubricant easily separates out；N, N-1,6-inferior hexyl-bis-[3-(3,5-di-tert-butyl-hydroxy phenyl)] propionic acid amide. and Asia
Tricresyl phosphate (2,4-di-tert-butyl) ester is respectively provided with and prevents ageing of plastics, improves the pliability of plastics, the effect of mechanical performance.
It is further preferred that described antioxidant includes the N of 0.5-1 part, N-1,6-inferior hexyl-bis-[3-(3,5-bis-tertiary fourths
Base-4-hydroxy phenyl) propionic acid amide. and tricresyl phosphite (2,4-di-tert-butyl) ester of 0.5-1 part.
Second aspect, embodiments provides the preparation method of a kind of plastic as above, including:
Step 1) heat radiation component and plastic raw materials are mixed in the molten state, and the acquisition mixture that stirs；Described
Heat radiation component includes: nanometer silicon carbide and Nano titanium nitride, wherein, the particle diameter of described nanometer silicon carbide and Nano titanium nitride exists
Between 10nm-900nm；
Step 2) described mixture machine-shaping is obtained plastic.
Embodiments provide the preparation method of a kind of plastic, by heat radiation component being melted with plastic raw materials
Melt and mix under state, and stir, it is possible to described heat radiation component is dispersed in described plastic raw materials, by machine-shaping,
It is obtained in that the plastic containing this heat radiation component, described heat radiation component include nanometer silicon carbide and Nano titanium nitride, carbonization
Silicon has heat conductivity height, insulating properties is strong, mechanical strength is high, it is aging to be difficult to, can produce the feature of higher far-infrared spectrum, nitrogen
Change titanium and there is high-melting-point, high rigidity, stability at elevated temperature and excellent heat conduction, electric conductivity, described carborundum and described nitrogen
Change titanium can the infrared radiation that converting heat is 8-15 micron wave length be gone out such that it is able to improve radiating effect, by described
Heat radiation component is added in described plastic so that the normal emittance of described surface of plastic products can reach more than 0.9,
Normal emittance is the highest, and in its unit are, the heat of radiation is the most, and radiating effect is the best.Although overcoming in prior art
Heat transfer efficiency is higher, but the defect that radiating effect is the most relatively low.
In one embodiment of the invention, described step 1) also include before: described heat radiation component is carried out pretreatment；
Specifically, will dispel the heat, component is dispersed in organic solvent, and volatilization removes organic solvent, it is thus achieved that pretreated
Heat radiation component.
By described heat radiation component is carried out pretreatment, it is possible to increase the dispersion of described heat radiation component, dissipating described
When hot component mixes with described plastic raw materials, it is possible to increase described heat radiation component dispersion effect in described plastic raw materials.
Wherein, dispersed the used means of described heat radiation component do not limit, and can under agitation it uniformly be divided
Dissipate in organic solvent, it is also possible to be dispersed in organic solvent by the way of ultrasonic wave concussion.
It should be noted that owing to coupling agent is the material that a class has two heterogeneity functional groups, its molecular structure
Maximum feature is two groups different containing chemical property in molecule, and one is the group of parent's inorganic matter, easily and inorganic matter table
Face chemically reactive；Another is organophilic group, can be with synthetic resin or other polymer generation chemical reaction or life
Hydrogen bond is become to be dissolved in wherein.Therefore coupling agent is referred to as " molecular bridge ", in order to improve the interface interaction between inorganic matter and Organic substance,
Thus it is greatly improved the performance of composite, such as physical property (mechanical performance), electrical property, hot property, optical property etc..Therefore,
When preparing described plastic, being added by described coupling agent in mixed system, described coupling agent can be by heat radiation component and institute
State plastic raw materials to be combined by the form of hydrogen bond or chemical bond such that it is able to improve described heat radiation component and institute further
State the interface binding power of plastic raw materials, improve the mechanical performance of described plastic.Described coupling agent can be added in described heat radiation
In component, or it is added in plastic raw materials, or both combine.
Wherein, the kind of described organic solvent is not limited.
In one embodiment of the invention, described organic solvent is selected from toluene, dimethylbenzene, ethylbenzene, ethyl acetate or acetic acid
One or more in butyl ester, propylene glycol methyl ether acetate.Described heat radiation component has extraordinary in described organic solvent
Dispersion effect.
In one embodiment of the invention, described heat radiation component dispersion also includes in organic solvent before: by coupling agent
It is dissolved in described organic solvent.
In embodiments of the present invention, by coupling agent being added in described organic solvent, the base of parent's inorganic matter in coupling agent
Group can be with the inorganic nano-particle effect in heat radiation component so that described coupling agent is attached in described heat radiation component, modified
After heat radiation component, described modified heat radiation component is when mixing with described plastic raw materials, and the parent in described coupling agent is organic
The group of thing can be with plastic raw materials generation chemical reaction or generation hydrogen bond such that it is able to improves described heat radiation component and moulds described
Dispersion effect in material raw material, improves the interfacial stress between described heat radiation component and described plastic raw materials, improves described plastics
The mechanical performance of goods.
In another embodiment of the present invention, described step 1) also include before: by described plastic raw materials 105-120 DEG C of baking
Roasting 100-120min, removes moisture.
By described plastic raw materials is toasted, it is possible to described heat radiation component is being scattered in described plastic raw materials
Time, reduce moisture interference, improve interface binding power.
In one embodiment of the invention, described heat radiation component and plastic raw materials are mixed in the molten state after also wrap
Include: adding additive in mixed system, described additive is in halogen-free flame retardants, dispersant, lubricant and antioxidant
One or more.
In embodiments of the present invention, after adding additive, by stirring, it is possible to described additive is dispersed in described
In mixed system, it is possible to reinforced plastics goods performance in the course of processing and end properties, such as: when described plastic
When also including halogen-free flame retardants and dispersant, it is possible to strengthen the fire protecting performance of described plastic, and mould described in can improving
Each component dispersion effect in the course of processing in material products so that the distribution of plastic component is more uniform；The most such as, when
When described plastic also includes antioxidant, it is possible to increase the antioxygenic property of described plastic.
Wherein, to described step 2) in the technique of machine-shaping do not limit.Processing method can include that compression moulding (is molded into
Type), extrusion molding (extrusion molding), injection (injection moulding), blowing (hollow molding) or calendering etc..
The third aspect, embodiments provides a kind of housing dispelled the heat, is made up of plastic as above.
Embodiments providing a kind of housing dispelled the heat, this housing is made up of plastic described above, should
Containing heat radiation component in plastic, described heat radiation component includes nanometer silicon carbide and Nano titanium nitride, and carborundum has heat conduction
Coefficient is high, insulating properties is strong, mechanical strength is high, it is aging to be difficult to, can produce the feature of higher far-infrared spectrum, and titanium nitride has height
Fusing point, high rigidity, stability at elevated temperature and excellent heat conduction, electric conductivity, described carborundum and described titanium nitride can be by
Converting heat is that the infrared radiation of 8-15 micron wave length is gone out such that it is able to improves radiating effect, described heat radiation component is added
Add in described plastic so that the normal emittance of described surface of plastic products can reach more than 0.9, the method for this housing
Higher to emissivity, radiating effect is greatly improved.Although it is higher to overcome heat transfer efficiency in prior art, but radiating effect depends on
The most relatively low defect.
Wherein, the described housing dispelled the heat can be phone housing, computer casing or the electronics unit device of other needs heat radiations
The shell of the shell of part, especially laser projection device, produces heat big in equipment work process, high to cooling requirements, permissible
Realize good radiating effect, be conducive to protecting electronic devices and components, increase the service life.
Hereinafter, the embodiment of the present invention will the present invention will be described by embodiment and comparative example.These embodiments are only
The example proposed to illustrate the present invention, those skilled in the art are not it is appreciated that the scope of the present invention is by these
The restriction of embodiment.
Comparative example 1
Comparative example 1 uses existing plastic, described plastic can be obtained by commercial means.Wherein, described
Plastic raw materials in plastic is nylon66 fiber.
Embodiment 1
(1) by the carborundum of a diameter of for 3g 10nm, the titanium nitride of a diameter of 900nm of 2g is dispersed in 95.5g ethyl acetate,
After dispersed with stirring is uniform, prepare the dispersion liquid of inorganic nano heat radiation component, described dispersion liquid is heated to 80 DEG C of evaporations dry
Dry, obtain inorganic nano heat radiation component after vaporing away described ethyl acetate solvent；
(2) nylon66 fiber is standby at 120 DEG C of baking 120min；
(3) set the temperature of twin-screw extrusion equipment as 230 DEG C, component that the inorganic nano after above-mentioned process is dispelled the heat with
(2) the 500g nylon66 fiber obtained in is placed in described twin screw techniques equipment, after molten condition, adds silicone oil 10g, Halogen
Poly-phosphorus-nitrogen compound 50g, antioxidant 10982.5g, irgasfos 168 2.5g, mixing, then by mixture through grit maker, cold
But, finished product is obtained.
Embodiment 2
(1) 2g titanate coupling agent is dispersed in 1kg toluene solvant formation coupling agent solution；Respectively that 72g is the most straight
Footpath is the carborundum of 900nm, and the titanium nitride of a diameter of 50nm of 18g, the anatase-type nanometer titanium dioxide of a diameter of 10nm of 30g divide
It is dispersed in described coupling agent solution, after dispersed with stirring is uniform, prepares coupling agent modified inorganic nano heat radiation component dispersion
Liquid, is heated to 80 DEG C of evaporation dryings by described dispersion liquid, obtains coupling agent modified powder after vaporing away described organic solvent
Inorganic nano heat radiation component；
(2) nylon66 fiber is toasted 100min at 105 DEG C, standby；
(3) set the temperature of twin-screw extrusion equipment as 230 DEG C, by the inorganic nano Heat dissipation composition after above-mentioned process with
(2) nylon66 fiber of the 1.2kg obtained in is placed in described twin screw techniques equipment, after molten condition, adds silicone oil 16g,
Halogen poly-phosphorus-nitrogen compound 60g, silicone powder 8g, antioxidant 10984g, irgasfos 168 4g, mixing, then by mixture through taking out
Grain machine, cooling, obtain finished product.
Embodiment 3
(1) being disperseed in organic solvent by 5g silane coupler, form coupling agent solution, described organic solvent is by 30g bis-
Toluene, 40g ethyl acetate, 29g ethylbenzene forms；The most respectively by the carborundum of a diameter of for 10g 200nm, a diameter of 10nm's of 6g
The anatase-type nanometer titanium dioxide of a diameter of 800nm of titanium nitride, 4g is dispersed in described coupling agent solution, and dispersed with stirring is uniform
After, prepare coupling agent modified inorganic nano Heat dissipation composition dispersion liquid, described dispersion liquid is heated to 100 DEG C of evaporations dry
Dry, obtain the inorganic nano heat radiation component of coupling agent modified powder after vaporing away described organic solvent；
(2) nylon66 fiber is toasted 110min at 110 DEG C, standby；
(3) set the temperature of twin-screw extrusion equipment as 230 DEG C, by the inorganic nano Heat dissipation composition after above-mentioned process with
(2) the 200g nylon66 fiber obtained in is placed in described twin screw techniques equipment, after molten condition, adds the poly-phosphorous nitride of Halogen
Compound 12g, silicone powder 3g, antioxidant 10980.8g, irgasfos 168 0.8g, mixing, then by mixture through grit maker, cold
But, finished product is obtained.
Embodiment 4
(1) by the carborundum of a diameter of for 8g 200nm, the titanium nitride of a diameter of 50nm of 2g is dispersed in described organic solvent
In (100g butyl acetate), after dispersed with stirring is uniform, prepares inorganic nano heat radiation component dispersion liquid, described dispersion liquid is added
Heat, to 100 DEG C of evaporation dryings, obtains the inorganic nano heat radiation component of powder after vaporing away described butyl acetate solvent；
(2) nylon66 fiber is toasted 120min at 120 DEG C, standby；
(3) setting the temperature of twin-screw extrusion equipment as 230 DEG C, dispel the heat component, 3g by the inorganic nano after above-mentioned process
The 200g nylon66 fiber obtained after silane coupler process middle with (2) is placed in described twin screw techniques equipment, after molten condition,
Add silicone oil 3g, silicone powder 2.5g, Halogen poly-phosphorus-nitrogen compound 15g, antioxidant 10980.5g, irgasfos 168 0.5g, mix,
Then by mixture through grit maker, cooling, finished product is obtained.
Comparative example 2
Described comparative example 2 is essentially identical with described comparative example 1, unique unlike, the plastic raw materials used in comparative example 2
For Merlon.
Embodiment 5
Described embodiment 5 is essentially identical with described embodiment 1, unique unlike, the plastic raw materials used in embodiment 5
For Merlon.
Embodiment 6
Described embodiment 6 is essentially identical with described embodiment 2, unique unlike, the plastic raw materials used in embodiment 6
For Merlon.
Embodiment 7
Described embodiment 7 is essentially identical with described embodiment 3, unique unlike, the plastic raw materials used in embodiment 7
For Merlon.
Embodiment 8
Described embodiment 8 is essentially identical with described embodiment 4, unique unlike, the plastic raw materials used in embodiment 8
For Merlon.
Experimental example
The heat radiation hot strength of plastic, bending strength, breach obtained by test comparison example 1-2 and embodiment 1-8
Impact strength, both horizontally and vertically heat transfer coefficient, concrete test result see table 1.
Wherein, in tension test, hot strength refers to that sample maximum tensile stress suffered by till fracture is
Hot strength.
The bending strength of heat radiation plastic refers to that material ruptures under bend loading effect or reaches energy during regulation amount of deflection
The maximum stress born.
When the notch impact strength of heat radiation plastic refers to be impacted by pendulum, resistance produced by material.It
It is a kind of performance indications, can be used in the quality control of production process it can also be used to compare the toughness of different materials.Specific practice
For: by sample horizontal positioned, two ends are not fixed.Release pendulum so that it is impact specimen.If sample is not destroyed, then change one more
Heavy pendulum also repeats above step, until sample destroys.
Heat conductivity refers under the conditions of steady heat transfer, the material that 1m is thick, the temperature difference of both side surface be 1 degree (K, DEG C), 1
In second (1s), by the heat of 1 square metre of area transmission, unit is watt/(W/ (m K) can use DEG C generation for K to meter Du herein
Replace).
Table 1
From upper table 1: heat radiation plastic that the method provided by the embodiment of the present invention is obtained and prior art
In plastic compare there is excellent mechanical strength and pliability, there is the surface method of good heat transfer property and excellence
To emissivity, and, it can also be seen that coupling agent is added in described heat radiation component and heat radiation component is modified from table 1,
Carrying out that the mechanical performance of obtained heat radiation plastic is blended again with plastic raw materials and pliability is more excellent, this is due to modified
Heat radiation component can more strengthen heat radiation component and plastic raw materials between adhesion so that heat radiation component dispersibility more
Stable, and then make the heat transfer property of described heat radiation plastic more excellent.
In sum, by heat radiation component is mixed in the molten state with plastic raw materials, and stir, it is possible to by institute
State heat radiation component to be dispersed in described plastic raw materials, pass through machine-shaping, it is possible to obtain the plastic containing this heat radiation component,
Described heat radiation component includes nanometer silicon carbide and Nano titanium nitride, and carborundum has that heat conductivity is high, insulating properties strong, mechanical strength
High, be difficult to the feature aging, higher far-infrared spectrum can be produced, it is stable that titanium nitride has high-melting-point, high rigidity, high temeperature chemistry
Property and excellent heat conduction, electric conductivity, converting heat can be 8-15 micron wave length by described carborundum and described titanium nitride
Infrared radiation is gone out such that it is able to improves radiating effect, described heat radiation component is added in described plastic so that institute
The normal emittance stating surface of plastic products can reach more than 0.9, and normal emittance is the highest, the heat of radiation in its unit are
Measuring the most, radiating effect is the best.Although it is higher to overcome heat transfer efficiency in prior art, but radiating effect is the most relatively low
Defect.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Claims (13)
1. a plastic, it is characterised in that described plastic includes plastic raw materials and heat radiation component, described heat radiation component
Including: nanometer silicon carbide and Nano titanium nitride, wherein, the particle diameter of described nanometer silicon carbide and Nano titanium nitride is at 10nm-900nm
Between.
Plastic the most according to claim 1, it is characterised in that described nanometer silicon carbide and the particle diameter of Nano titanium nitride
Between 10nm-600nm.
Plastic the most according to claim 1, it is characterised in that described Nano titanium nitride is in described heat radiation component
Mass fraction is 15-40%.
Plastic the most according to claim 1, it is characterised in that described plastic raw materials is 100-300 part, described heat radiation
Component is 10-30 part.
5. according to the plastic described in any one of claim 1-4, it is characterised in that described heat radiation component is uniformly filled in institute
State in plastic raw materials, and wrapped by described plastic raw materials.
Plastic the most according to claim 1, it is characterised in that described plastic also includes additive, described in add
Add one or more in halogen-free flame retardants, dispersant, lubricant and antioxidant of agent.
Plastic the most according to claim 1, it is characterised in that described additive includes the halogen-free flameproof of 10-15 part
Agent, the dispersant of 2-4 part, the lubricant of 2-3 part and the antioxidant of 1-2 part.
8. the preparation method of a plastic as claimed in claim 1, it is characterised in that including:
Step 1) heat radiation component and plastic raw materials are mixed in the molten state, and the acquisition mixture that stirs；Described heat radiation
Component includes: nanometer silicon carbide and Nano titanium nitride, and wherein, the particle diameter of described nanometer silicon carbide and Nano titanium nitride is at 10nm-
Between 900nm；
Step 2) described mixture machine-shaping is obtained plastic.
Preparation method the most according to claim 8, it is characterised in that
Described step 1) also include before: described heat radiation component is carried out pretreatment；
Specifically, will dispel the heat, component is dispersed in organic solvent, and volatilization removes organic solvent, it is thus achieved that pretreated heat radiation
Component.
Preparation method the most according to claim 9, it is characterised in that described heat radiation component is dispersed in organic molten
Also included before in agent: coupling agent is dissolved in described organic solvent.
11. preparation methoies according to claim 8, it is characterised in that
Described step 1) also include before: described plastic raw materials is toasted 100-120min at 105-120 DEG C, removes moisture.
12. preparation methoies according to claim 8, it is characterised in that
Described heat radiation component and plastic raw materials are mixed in the molten state after also include: in mixed system add add
Agent, one or more in halogen-free flame retardants, dispersant, lubricant and antioxidant of described additive.
13. 1 kinds of housings that can dispel the heat, it is characterised in that be made up of the plastic described in any one of claim 1-7.
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| CN108495521A (en) * | 2018-03-30 | 2018-09-04 | 歌尔股份有限公司 | A kind of shell and preparation method thereof and electronic equipment |
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