CN113357571B - Graphite alkene heat dissipation lamps and lanterns for education - Google Patents
Graphite alkene heat dissipation lamps and lanterns for education Download PDFInfo
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Abstract
The invention discloses a graphene heat dissipation lamp for education, which comprises a graphene composite heat-conducting plastic radiator and an LED light source board arranged on the graphene composite heat-conducting plastic radiator; the preparation method of the graphene composite heat-conducting plastic radiator comprises three steps of preparing graphene transverse heat-conducting granules, preparing graphene longitudinal heat-conducting granules and preparing the graphene composite heat-conducting plastic radiator, and the graphene composite heat-conducting plastic radiator with the outer heat-conducting layer with transverse heat-conducting performance and the inner heat-conducting layer with longitudinal heat-conducting performance can be obtained through the three steps. Compared with the prior art, the lamp has the advantages that the weight of the lamp is reduced, the lamp has excellent heat dissipation performance, and the technical problems of poor heat dissipation and/or heavy weight of the existing lamp in the education industry are effectively solved.
Description
Technical Field
The invention relates to the technical field of education and illumination, in particular to a graphene heat dissipation lamp for education, and specifically relates to an LED lamp with high heat dissipation performance.
Background
Because the LED lamp has the advantages of low energy consumption, good lighting effect and the like, the LED lamp is widely used in the education industry. At present, an LED lamp generally has two types of heat dissipation structures, which are respectively as follows:
one type is an LED lamp using common plastic as a heat sink, which is generally applied in a micro-grid classroom. However, the heat conductivity coefficient of common plastics is lower than 0.2W/mK, so that the heat dissipation effect of the lamp is not ideal. The lamp works for a long time, the brightness is reduced due to overhigh temperature, and the lamp is seriously damaged. The students can also cause visual fatigue and influence the eyesight after using the lamp for a long time.
Another type is an LED light fixture using aluminum alloy 6063 as a heat sink, which is commonly used as a blackboard light in a classroom. But the weight of the lamp is higher due to the radiator made of the aluminum alloy material. And students easily make a mess in the classroom, leading to their possibility of dropping, easily cause the injury to the student when it drops.
In general, with the popularization of modern education, the lamp facilities in the classroom should be improved along with the development of the modern education so as to meet the physical, mental and safety requirements of teenagers.
With the development of society and the advancement of technology, scientists find that graphene has a plurality of excellent properties, for example, the thermal conductivity of graphene is as high as 5000W/(m.K), which is 10 times that of copper. Graphene also has a thickness of up to 2600 m2The specific surface area is ultrahigh and is 100 times of that of steel, and the steel also has good flexibility and extensibility. Therefore, the graphene has the advantages of high heat conduction, high strength and light weight, and is an ideal light-weight and efficient heat management material. On the basis, scientists have developed a new technology for combining graphene with LED lamps, which is as follows:
documents with publication numbers CN210035215U and CN209229466U disclose two kinds of lamps for education, which are both heat-dissipating by introducing a fan, but the material type of the heat-dissipating housing is unknown, and the lamp needs to be opened by introducing a fan. Therefore, in practical application, the two education lamps not only can reduce the dustproof and waterproof grade of the lamp, but also have the problems of complex installation process and the like.
The publication No. CN110043881A discloses a heat dissipation device of an LED lamp, which increases heat dissipation by adopting a mode of spraying graphene heat dissipation coating on the inner surface of a lampshade shell and the lower surface of an aluminum substrate to achieve the purpose of heat dissipation; however, the graphene coating cannot improve the heat conductivity coefficient of the material, only partial heat radiation can be increased, and the heat dissipated by the heat radiation is little, so that the graphene only serves as a heat radiation coating and plays a very low role.
The publication No. CN209840037U discloses a high heat dissipation graphene lamp structure, in which graphene is directly prepared into a heat sink, and a high heat dissipation structure is finally formed, but the heat sink made of pure graphene has the problems of poor mechanical strength, high cost and the like.
Although the technology can combine graphene with an LED lamp, the applicant finds that the technology has some problems in heat dissipation, weight and cost more or less when used in the field of educational lighting, and therefore needs to further develop new technology to solve the technical problems in the prior art.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and discloses a graphene heat dissipation lamp for education.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
a graphene heat dissipation lamp for education comprises a graphene composite heat conduction plastic radiator and an LED light source plate installed on the graphene composite heat conduction plastic radiator; the preparation method of the graphene composite heat-conducting plastic radiator comprises the following steps:
step 1: preparation of graphene transverse heat conduction granules
Primarily mixing 1-70 parts by weight of graphene, 1-70 parts by weight of graphite nanosheets and 1-10 parts by weight of fibrous fillers for 10-60min, adding 1-100 parts by weight of thermoplastic plastics after mixing, and extruding by using a screw at the decomposition temperature of the thermoplastic plastics to obtain graphene transverse heat conduction granules;
and 2, step: preparation of graphene longitudinal heat conduction granules
S1: firstly, adding 1-10 parts by weight of dispersing agent, 1-10 parts by weight of graphene and 1-30 parts by weight of spherical alumina powder into 1-100 parts by weight of water, dispersing for 10-60min at the rotating speed of 100-10000r/min to obtain pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene-coated alumina;
s2: adding 1-70 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 1-100 parts by weight of thermoplastic plastic, and then carrying out screw extrusion at the decomposition temperature of the thermoplastic plastic to obtain longitudinal graphene heat-conducting granules;
and step 3: preparation of graphene composite heat-conducting plastic radiator
Carrying out heat conduction on the graphene transverse heat conduction granules and the graphene longitudinal heat conduction granules according to the proportion of 1-1: and (3) carrying out two-layer co-extrusion according to the mass ratio of 1-9 to obtain the graphene composite heat-conducting plastic radiator with the outer heat-conducting layer with transverse heat-conducting performance and the inner heat-conducting layer with longitudinal heat-conducting performance.
In the step 1, the graphene is formed by mixing three types of materials with the layer number of 1-10 layers and the sheet diameters of 1-10um, 10-50um and 50-100um according to the mass ratio of 1-3.
In the step 1, the graphite nanosheet is formed by mixing three types of graphite nanosheets with the number of layers being 20-300, the sheet diameters being 10-20um, 20-50um and 50-100um according to the mass ratio of 1-6.
In step 1, the fibrous filler is carbon nano-tube or carbon fiber, the diameter is 2nm-100nm, and the length is 1-30um.
In the step 2, the number of layers of the graphene is 1-10, and the sheet diameter is 10-20um.
In the step 2, the dispersant is one or more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, hexadecyl ammonium bromide, polyoxyethylene lauryl ether, tween, triton, sodium lignosulfonate, sodium polystyrene sulfonate, polyvinylpyrrolidone, polyacrylamide, aqueous dispersion of polyvinyl alcohol, polyethylene glycol, natural polymer saccharides and derivatives thereof, which are mixed according to any proportion.
The thermoplastic plastic is one or more of PP resin, HDPE resin, PA resin, ABS resin, PBT resin, PET resin and PI resin which are mixed according to any proportion.
The graphene composite heat-conducting plastic radiator is provided with an embedding groove, graphene heat-conducting silicone grease is filled between the embedding groove and the LED light source plate, and the preparation method of the graphene heat-conducting silicone grease comprises the following steps:
step (1): firstly, adding 1-10 parts by weight of dispersing agent, 1-10 parts by weight of graphene and 1-30 parts by weight of spherical alumina powder into 1-100 parts by weight of water, dispersing for 10-60min at the rotating speed of 100-10000r/min to obtain pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene-coated alumina;
step (2): adding 1-100 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 1-10 parts by weight of dimethyl silicone oil, pre-stirring for 10-30min under the planetary stirring condition of 100-1000r/min, further dispersing and grinding for 10-50 times by using a three-roll grinding machine, and performing centrifugal defoaming to obtain the graphene heat-conducting silicone grease.
The invention has the advantages that:
1. according to the invention, graphene and graphene nanosheets are used as main heat-conducting fillers, and a two-layer co-extrusion mode is adopted to prepare the high-heat-dissipation anisotropic double-layer radiator, so that the high-heat-dissipation anisotropic double-layer radiator is used for replacing aluminum profiles, non-heat-conducting plastics and the like used in the existing education and illumination system, the defects of poor heat-dissipation effect, heavier quality and the like in the existing illumination system are overcome, the service life of a lamp is prolonged, great convenience is brought to teaching work, and the eyesight, physical and mental health of teenagers are ensured; meanwhile, the energy is saved and the environment is protected.
2. When the graphene composite heat-conducting plastic radiator is prepared, graphene with different two-dimensional sizes, graphene nanosheets and a small amount of fibrous filler are innovatively adopted for compounding, and the heat-conducting plastic with high plane thermal conductivity is obtained. The graphene nanosheets have the function of orienting graphene, the graphene with different flake diameters has the function of obtaining a two-dimensional communicated graphene structure to the maximum extent, and the carbon nanotubes or carbon fibers have the function of obtaining excellent heat conductivity coefficients in the vertical direction. In addition, an outer heat conduction layer (an upper layer) which is in contact with the LED light source plate and has transverse heat conduction performance and an inner heat conduction layer (an inner layer or a lower layer) which is in contact with air and has longitudinal heat conduction performance are obtained in a two-layer co-extrusion mode, and a heat soaking and transferring channel is formed by combining the outer heat conduction layer and the inner heat conduction layer, so that the purpose of high heat dissipation is achieved.
3. According to the invention, when the graphene heat-conducting silicone grease is prepared, the high-heat-conducting spherical graphene is obtained in a mode of coating graphene with alumina, and the filler is added into plastic and dimethyl silicone oil, so that a heat-conducting silicone grease product with a high heat-conducting coefficient can be obtained.
4. The graphene composite heat-conducting plastic radiator prepared by the invention can replace aluminum alloy radiators, grids, plastic parts for fixing lamps and the like of the existing education lamp system, so that each component of the lighting system is made of heat-conducting plastic, heat-radiating channels are effectively increased, and an ideal heat-radiating effect is achieved.
5. The graphene heat-conducting silicone grease can further transfer heat of a PCB heat source to graphene high-heat-conducting plastic rapidly due to the introduction of the graphene heat-conducting silicone grease, so that heat exchange can be carried out rapidly with air.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
labeled as: 1. graphene composite heat conduction plastic radiator, 2, graphene heat conduction silicone grease, 3, LED light source board, 4, plastic end cover, 5, plastic grid, 6, lens, 7, fixed bolster, 8, power.
Detailed Description
As shown in fig. 1 and 2, the invention discloses a graphene heat dissipation lamp for education, which comprises a graphene composite heat conduction plastic radiator 1, an LED light source plate 3, a plastic end cover 4, a plastic grid 5, a lens 6, a fixing support 7 and a power supply 8. Graphene composite heat-conducting plastic radiator 1 is obtained by two-layer co-extrusion molding of the graphene transverse heat-conducting granules and the graphene longitudinal heat-conducting granules, the length of the graphene composite heat-conducting plastic radiator is slightly longer than that of LED light source board 3, and the graphene composite heat-conducting plastic radiator can be designed into a structure comprising an inner concave lower surface, an outer convex upper surface and a cavity. The cavity is located between the inner concave lower surface and the outer convex upper surface, the middle of the inner concave lower surface is axially provided with an embedding groove communicated with the cavity, and the LED light source board 3 can be installed on the graphene composite heat-conducting plastic radiator 1 through the embedding groove. Lens 6 are fixed and are used for seeing through the LED light that LED light source board 3 sent on the indent lower surface of compound thermal-conductive plastic radiator 1 of graphite alkene, and plastic grid 5 is fixed and is used for forming the protection to lens 6 in the lower part of compound thermal-conductive plastic radiator 1 of graphite alkene, plays dizzy effect of preventing. The plastic end covers 4 are fixed at two ends of the graphene composite heat-conducting plastic radiator 1 and used for fixing the LED light source plate 3 and plugging the cavity. The fixed support and the power supply 8 are both fixed on the upper part of the graphene composite heat-conducting plastic radiator 1, and the whole lamp can be installed on the base body through the fixed support 7. Of course, the graphene composite thermal conductive plastic heat sink 1 may also be designed into an existing conventional structure.
The key point of the invention is that the lamp in the education industry is improved, the novel graphene composite heat-conducting plastic radiator is used for replacing the aluminum alloy 6063 radiator, the non-heat-conducting plastic radiator and other structures which are commonly used at present, the improved lamp has excellent heat radiation performance while the weight of the lamp is reduced, and the technical problems of poor heat radiation and/or heavy weight of the existing lamp in the education industry are effectively solved. In particular, the method comprises the following steps of,
the preparation method of the graphene composite heat-conducting plastic radiator comprises the following steps:
step 1: preparation of graphene transverse heat conduction granules
Firstly, preparing raw materials, wherein the raw materials comprise graphene, graphite nanosheets, fibrous fillers and thermoplastic plastics, wherein the graphene is formed by mixing three materials, namely 1-10 layers of graphene, 1-10um of graphene, 10-50um of graphene and 50-100um of graphene, according to a mass ratio of 1-3.
The graphite nanosheet is formed by mixing three materials with the number of layers of 20-300 and the sizes of 10-20um, 20-50um and 50-100um according to the mass ratio of 1-6.
The fiber filler is carbon nanotube or carbon fiber with diameter of 2-100 nm and length of 1-30um.
The thermoplastic plastic is powder and is prepared by one or more of PP resin, HDPE resin, PA resin, ABS resin, PBT resin, PET resin and PI resin which are mixed according to any proportion.
And secondly, primarily mixing 1-70 parts by weight of graphene, 1-70 parts by weight of graphite nanosheets and 1-10 parts by weight of fibrous fillers for 10-60min, specifically mixing until the apparent colors are uniform, adding 1-100 parts by weight of thermoplastic plastic powder after mixing, and extruding by using a screw at the decomposition temperature of the thermoplastic plastic to obtain the graphene transverse heat conduction granules with high heat conduction coefficients.
And 2, step: preparation of graphene longitudinal heat conduction granules
S1: firstly, adding 1-10 parts by weight of dispersing agent, 1-10 parts by weight of graphene and 1-30 parts by weight of spherical alumina powder into 1-100 parts by weight of water, dispersing for 10-60min at the rotating speed of 100-10000r/min to obtain pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene-coated alumina.
Wherein, the number of layers of the graphene is 1-10, and the sheet diameter is 10-20um. The dispersant is one or more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, hexadecyl ammonium bromide, polyoxyethylene lauryl ether, tween, triton, sodium lignosulfonate, sodium polystyrene sulfonate, polyvinylpyrrolidone, polyacrylamide, aqueous dispersion of polyvinyl alcohol, polyethylene glycol, natural macromolecular saccharides and derivatives thereof, which are mixed according to any proportion.
S2: adding 1-70 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 1-100 parts by weight of thermoplastic plastic powder, and then carrying out screw extrusion at the decomposition temperature of thermoplastic plastic to obtain the graphene longitudinal heat-conducting granules.
And step 3: preparation of graphene composite heat-conducting plastic radiator
Carrying out heat conduction on the graphene transverse heat conduction granules and the graphene longitudinal heat conduction granules according to the proportion of 1-1: and (3) carrying out two-layer co-extrusion according to the mass ratio of 1-9 to obtain the graphene composite heat-conducting plastic radiator with the outer heat-conducting layer with transverse heat-conducting performance and the inner heat-conducting layer with longitudinal heat-conducting performance.
In order to enable the lamp to have a better heat dissipation effect and reduce the weight, the plastic end cover 4, the plastic grid 5 and the fixing support 7 are preferably made of graphene transverse heat conduction granules or graphene longitudinal heat conduction granules through extrusion.
In order to further improve the heat dissipation effect of the lamp, graphene heat-conducting silicone grease 2 is further filled between the embedding groove of the graphene composite heat-conducting plastic radiator 1 and the LED light source plate, and the preparation method of the graphene heat-conducting silicone grease comprises the following steps:
step (1): firstly adding 1-10 parts by weight of dispersing agent, 1-10 parts by weight of graphene and 1-30 parts by weight of spherical alumina powder into 1-100 parts by weight of water, wherein the dispersing agent can adopt the dispersing agent disclosed in the step 2, then dispersing for 10-60min at the rotating speed of 100-10000r/min to obtain pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene coated alumina.
Step (2): adding 1-100 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 1-10 parts by weight of dimethyl silicone oil, pre-stirring for 10-30min under the planetary stirring condition of 100-1000r/min, further dispersing and grinding for 10-50 times by using a three-roll grinding machine, and performing centrifugal defoaming to obtain the graphene heat-conducting silicone grease.
The present invention will be described in detail with reference to specific examples.
Example 1
The embodiment discloses graphite alkene heat dissipation lamps and lanterns for education, it includes graphite alkene compound heat conduction plastics radiator, LED light source board, plastics end cover, plastic grid, lens, fixed bolster and power. The preparation method of the graphene composite heat-conducting plastic radiator comprises the following steps:
step 1: preparation of graphene transverse heat conduction granules
Firstly, preparing raw materials, wherein the raw materials comprise graphene, graphite nanosheets, fibrous fillers and thermoplastic plastics, and the graphene is formed by mixing three materials, namely 1-10 layers of the graphene, 1-10um of the graphene, 10-50um of the graphene and 50-100um of the graphene, according to a mass ratio of 1.
The graphite nanosheet is formed by mixing three types of graphite nanosheets, namely, graphite nanosheets with 20-300 layers and sheet diameters of 10-20um, 20-50um and 50-100um according to the mass ratio of 1.
The fiber filler adopts carbon nano tubes with the diameter of 2nm-100nm and the length of 1-30um.
The thermoplastic plastic adopts PP resin powder.
And secondly, preliminarily mixing 1 part by weight of graphene, 1 part by weight of graphite nanosheets and 1 part by weight of carbon nanotubes for 10min, specifically mixing until the apparent colors are uniform, adding 1 part by weight of thermoplastic plastic powder after mixing, and extruding by using a screw at the decomposition temperature of the thermoplastic plastic to obtain the graphene transverse heat conduction granules with high heat conduction coefficients.
Step 2: preparation of graphene longitudinal heat conduction granules
S1: firstly, 1 part by weight of dispersing agent, 1 part by weight of graphene and 1 part by weight of spherical alumina powder are added into 1 part of water, the mixture is dispersed for 10min at the rotating speed of 100r/min to obtain pre-dispersion liquid, and then the pre-dispersion liquid is subjected to spray drying to form the spherical heat-conducting filler of graphene-coated alumina.
Wherein, the number of layers of the graphene is 1-10, and the sheet diameter is 10-20um. The dispersant is sodium dodecyl benzene sulfonate.
S2: adding 1 part by weight of spherical heat-conducting filler of graphene-coated alumina into 1 part by weight of thermoplastic plastic powder, and then carrying out screw extrusion at the decomposition temperature of the thermoplastic plastic to obtain the graphene longitudinal heat-conducting granules.
And step 3: preparation of graphene composite heat-conducting plastic radiator
Mixing the graphene transverse heat conduction granules and the graphene longitudinal heat conduction granules according to the ratio of 1: and (2) carrying out two-layer co-extrusion according to the mass ratio of 1 to obtain the graphene composite heat-conducting plastic radiator with the outer heat-conducting layer with transverse heat-conducting performance and the inner heat-conducting layer with longitudinal heat-conducting performance.
Example 2
The embodiment discloses graphite alkene heat dissipation lamps and lanterns for education, it includes compound thermal conductivity plastic radiator of graphite alkene, LED light source board, plastics end cover, plastic grid, lens, fixed bolster and power. The preparation method of the graphene composite heat-conducting plastic radiator comprises the following steps:
step 1: preparation of graphene transverse heat conduction granules
Firstly, preparing raw materials, wherein the raw materials comprise graphene, graphite nanosheets, fibrous fillers and thermoplastic powder, and the graphene is formed by mixing three materials, namely 1-10 layers of the graphene, 1-10um of the graphene, 10-50um of the graphene and 50-100um of the graphene, according to a mass ratio of 3.
The graphite nanosheet is formed by mixing three types of graphite nanosheets, namely, graphite nanosheets with 20-300 layers and sheet diameters of 10-20um, 20-50um and 50-100um according to the mass ratio of 2.
The fiber filler is carbon fiber with diameter of 2-100 nm and length of 1-30um.
The thermoplastic plastic adopts ABS resin powder.
And secondly, preliminarily mixing 70 parts by weight of graphene, 70 parts by weight of graphite nanosheets and 10 parts by weight of carbon fibers for 60min, specifically mixing until the apparent colors are uniform, adding 100 parts by weight of thermoplastic plastic powder after mixing, and extruding by using a screw at the decomposition temperature of the thermoplastic plastic to obtain the graphene transverse heat conduction particle material with high heat conduction coefficient.
Step 2: preparation of graphene longitudinal heat conduction granules
S1: firstly, adding 10 parts by weight of dispersing agent, 10 parts by weight of graphene and 30 parts by weight of spherical alumina powder into 100 parts of water, dispersing for 60min at the rotating speed of 10000r/min to obtain a pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene-coated alumina.
Wherein, the number of layers of the graphene is 1-10, and the sheet diameter is 10-20um. The dispersant is cetyl ammonium bromide.
S2: adding 70 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 100 parts by weight of thermoplastic plastic powder, and then carrying out screw extrusion at the decomposition temperature of the thermoplastic plastic to obtain the longitudinal graphene heat-conducting granules.
And step 3: preparation of graphene composite heat-conducting plastic radiator
Carrying out thermal treatment on the graphene transverse thermal conduction granules and the graphene longitudinal thermal conduction granules according to the ratio of 1: and 9, carrying out two-layer co-extrusion to obtain the graphene composite heat-conducting plastic radiator with the outer heat-conducting layer with the transverse heat-conducting performance and the inner heat-conducting layer with the longitudinal heat-conducting performance.
Example 3
The embodiment discloses graphite alkene heat dissipation lamps and lanterns for education, it includes compound thermal conductivity plastic radiator of graphite alkene, LED light source board, plastics end cover, plastic grid, lens, fixed bolster and power. The preparation method of the graphene composite heat-conducting plastic radiator comprises the following steps:
step 1: preparation of graphene transverse heat conduction granules
Firstly, preparing raw materials, wherein the raw materials comprise graphene, graphite nanosheets, fibrous fillers and thermoplastic powder, wherein the graphene is formed by mixing three materials, namely 1-10 layers of graphene, 1-10um of graphene, 10-50um of graphene and 50-100um of graphene, in a mass ratio of 2.
The graphite nanosheet is formed by mixing three types of graphite nanosheets, namely 20-300 layers, 10-20um, 20-50um and 50-100um in sheet diameter according to the mass ratio of 3.
The fiber filler adopts carbon fiber with the diameter of 2nm-100nm and the length of 1-30um.
The thermoplastic plastic is prepared by mixing PA resin powder and PBT resin powder according to any proportion.
And secondly, preliminarily mixing 30 parts by weight of graphene, 40 parts by weight of graphite nanosheets and 5 parts by weight of carbon fibers for 30min, specifically mixing until the apparent colors are uniform, adding 50 parts by weight of thermoplastic plastic powder after mixing, and extruding by using a screw at the decomposition temperature of the thermoplastic plastic to obtain the graphene transverse heat conduction granules with high heat conduction coefficients.
And 2, step: preparation of graphene longitudinal heat conduction granules
S1: firstly, adding 5 parts by weight of dispersing agent, 5 parts by weight of graphene and 15 parts by weight of spherical alumina powder into 60 parts of water, dispersing for 30min at the rotating speed of 5000r/min to obtain a pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene-coated alumina.
Wherein, the number of layers of the graphene is 1-10, and the sheet diameter is 10-20um. The dispersing agent is the mixture of sodium polystyrene sulfonate, polyvinylpyrrolidone and polyacrylamide according to any proportion.
S2: adding 40 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 60 parts by weight of thermoplastic plastic powder, and then carrying out screw extrusion at the decomposition temperature of the thermoplastic plastic to obtain the longitudinal graphene heat-conducting granules.
And 3, step 3: preparation of graphene composite heat-conducting plastic radiator
Mixing the graphene transverse heat conduction granules and the graphene longitudinal heat conduction granules according to the ratio of 1: and 5, carrying out two-layer co-extrusion to obtain the graphene composite heat-conducting plastic radiator with the outer heat-conducting layer with the transverse heat-conducting performance and the inner heat-conducting layer with the longitudinal heat-conducting performance.
Example 4
The embodiment discloses graphite alkene heat dissipation lamps and lanterns for education, it includes compound thermal conductivity plastic radiator of graphite alkene, LED light source board, plastics end cover, plastic grid, lens, fixed bolster and power. The preparation method of the graphene composite heat-conducting plastic radiator comprises the following steps:
step 1: preparation of graphene transverse heat conduction granules
Firstly, preparing raw materials, wherein the raw materials comprise graphene, graphite nanosheets, fibrous fillers and thermoplastic powder, and the graphene is formed by mixing three materials, namely 1-10 layers of the graphene, 1-10um of the graphene, 10-50um of the graphene and 50-100um of the graphene, according to a mass ratio of 1.
The graphite nanosheet is formed by mixing three types of graphite nanosheets, namely 20-300 layers, 10-20um, 20-50um and 50-100um in sheet diameter according to the mass ratio of 6.
The fiber filler adopts carbon nano tubes with the diameter of 2nm-100nm and the length of 1-30um.
The thermoplastic plastic is prepared by mixing PET resin powder and PI resin powder in any proportion
And secondly, preliminarily mixing 20 parts by weight of graphene, 55 parts by weight of graphite nanosheets and 4 parts by weight of carbon nanotubes for 20min, specifically mixing until the apparent colors are uniform, adding 80 parts by weight of thermoplastic plastic powder after mixing, and extruding by using a screw at the decomposition temperature of the thermoplastic plastic to obtain the graphene transverse heat conduction particle material with high heat conduction coefficient.
Step 2: preparation of graphene longitudinal heat conduction granules
S1: adding 8 parts by weight of dispersing agent, 4 parts by weight of graphene and 25 parts by weight of spherical alumina powder into 40 parts of water, dispersing for 20min at the rotating speed of 3000r/min to obtain a pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene-coated alumina.
Wherein, the number of layers of the graphene is 1-10, and the sheet diameter is 10-20um. The dispersant is polyethylene glycol.
S2: adding 60 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 80 parts by weight of thermoplastic plastic powder, and then carrying out screw extrusion at the decomposition temperature of the thermoplastic plastic to obtain the longitudinal graphene heat-conducting granules.
And step 3: preparation of graphene composite heat-conducting plastic radiator
Carrying out thermal treatment on the graphene transverse thermal conduction granules and the graphene longitudinal thermal conduction granules according to the ratio of 1:2, co-extruding the two layers by mass ratio to obtain the graphene composite heat-conducting plastic radiator with the outer heat-conducting layer with transverse heat-conducting performance and the inner heat-conducting layer with longitudinal heat-conducting performance.
Example 5
On the basis of embodiment 1, in order to further improve the heat dissipation effect of the lamp, in this embodiment, graphene heat conductive silicone grease is further filled between the embedding groove of the graphene composite heat conductive plastic heat sink and the LED light source board, and the preparation method of the graphene heat conductive silicone grease comprises:
step (1): firstly, 1 part by weight of dispersing agent, 1 part by weight of graphene and 1 part by weight of spherical alumina powder are added into 1 part of water, the mixture is dispersed for 10min at the rotating speed of 100r/min to obtain pre-dispersion liquid, and then the pre-dispersion liquid is subjected to spray drying to form the spherical heat-conducting filler of graphene-coated alumina.
Step (2): adding 1 part by weight of spherical heat-conducting filler of graphene-coated alumina into 1 part by weight of dimethyl silicone oil, pre-stirring for 10min under the planetary stirring condition of 100r/min, further dispersing and grinding for 10 times by using a three-roll grinding machine, and performing centrifugal defoaming to obtain the graphene heat-conducting silicone grease.
Example 6
On the basis of embodiment 2, in order to further improve the heat dissipation effect of the lamp, in this embodiment, graphene heat conductive silicone grease is further filled between the embedding groove of the graphene composite heat conductive plastic heat sink and the LED light source board, and the preparation method of the graphene heat conductive silicone grease comprises:
step (1): firstly, adding 10 parts by weight of dispersing agent, 10 parts by weight of graphene and 30 parts by weight of spherical alumina powder into 100 parts of water, dispersing for 60min at the rotating speed of 10000r/min to obtain a pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene-coated alumina.
Step (2): adding 100 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 10 parts by weight of dimethyl silicone oil, pre-stirring for 30min under the planetary stirring condition of 1000r/min, further dispersing and grinding for 50 times by using a three-roll grinding machine, and performing centrifugal defoaming to obtain the graphene heat-conducting silicone grease.
Example 7
On the basis of embodiment 3, in order to further improve the heat dissipation effect of the lamp, in this embodiment, graphene heat conductive silicone grease is further filled between the embedding groove of the graphene composite heat conductive plastic heat sink and the LED light source board, and the preparation method of the graphene heat conductive silicone grease comprises:
step (1): firstly, adding 5 parts by weight of dispersing agent, 5 parts by weight of graphene and 20 parts by weight of spherical alumina powder into 50 parts of water, dispersing for 40min at the rotating speed of 5000r/min to obtain a pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene-coated alumina.
Step (2): adding 40 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 5 parts by weight of dimethyl silicone oil, pre-stirring for 20min under the planetary stirring condition of 500r/min, further dispersing and grinding for 30 times by using a three-roller grinding machine, and performing centrifugal deaeration to obtain the graphene heat-conducting silicone grease.
Example 8
On the basis of embodiment 4, in order to further improve the heat dissipation effect of the lamp, in this embodiment, graphene heat conductive silicone grease is further filled between the embedding groove of the graphene composite heat conductive plastic heat sink and the LED light source board, and the preparation method of the graphene heat conductive silicone grease comprises:
step (1): firstly, adding 10 parts by weight of dispersing agent, 8 parts by weight of graphene and 10 parts by weight of spherical alumina powder into 80 parts of water, dispersing for 20min at the rotating speed of 8000r/min to obtain a pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene-coated alumina.
Step (2): adding 40 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 3 parts by weight of dimethyl silicone oil, pre-stirring for 25min under the planetary stirring condition of 400r/min, further dispersing and grinding for 25 times by using a three-roll grinding machine, and performing centrifugal defoaming to obtain the graphene heat-conducting silicone grease.
Comparative example 1
This comparative example is essentially the same as example 1, with the primary difference being that a single sheet diameter of graphene and a single sheet diameter of graphite nanoplatelets are employed. Specifically, in the comparative example, the sheet diameter of the graphene is 1-10um, and the sheet diameter of the graphite nanosheet is 10-20um.
Comparative example 2
This comparative example is essentially the same as example 2, with the main difference being the use of single platelet size graphene and single platelet size graphite nanoplatelets. Specifically, in the comparative example, the sheet diameter of the graphene is 1-10um, and the sheet diameter of the graphite nanosheet is 10-20um.
Comparative example 3
This comparative example is essentially the same as example 3, with the main difference being the use of single platelet size graphene and single platelet size graphite nanoplatelets. Specifically, in the comparative example, the sheet diameter of the graphene is 1-10um, and the sheet diameter of the graphite nanosheet is 10-20um.
Comparative example 4
This comparative example is substantially the same as example 4, with the main difference being that two sheet sizes of graphene and two sheet sizes of graphite nanoplatelets are employed. Specifically, in the comparative example, the number of graphene layers is 1 to 10, and the two types of graphene with the sheet diameters of 1 to 10um and 10 to 50um are 2:5, the graphite nano-sheet is formed by mixing two kinds of graphite nano-sheets, wherein the number of the layers is 20-300, and the diameters of the graphite nano-sheets are 20-50um and 50-100um according to the ratio of 1:1, and mixing the components in a mass ratio of 1.
Comparative example 5
This comparative example used an LED lamp using aluminum alloy 6063 as a heat sink in the background art for comparison.
Experiment of
The applicant adopts an ASTM E1461 thermal conductivity test method to respectively test the thermal conductivity performance of the graphene composite thermal conductive plastic radiator in examples 1-4 and the thermal conductivity performance of the graphene thermal conductive silicone grease in examples 5-8, and adopts a temperature sensing probe temperature test method to respectively carry out thermal radiation and weight tests on the LED lamp including the graphene composite thermal conductive plastic radiator and the graphene thermal conductive silicone grease in examples 5-8 and the lamp in the comparative example 5, and the test results are as follows:
1. the thermal conductivity performance of the graphene composite thermal conductive plastic radiator is tested and shown in table 1 below.
2. The thermal conductivity of the graphene thermal conductive silicone grease is tested and shown in table 2 below.
3. The lamp heat dissipation performance is tested as shown in table 3 below.
Conclusion analysis:
1. as can be seen from table 1 above, in the invention, three kinds of graphene and graphene nanosheets with different two-dimensional sizes and a small amount of fibrous filler are adopted for compounding, and compared with compounding of a single two-dimensional size and only two kinds of graphene and graphene nanosheets with different two-dimensional sizes, the graphene composite thermal conductive plastic radiator with a higher plane thermal conductivity can be obtained, so that the heat dissipation effect of the product can be effectively improved.
2. As can be seen from table 2 above, the graphene thermal grease prepared by the specific method of the present invention also has excellent thermal conductivity, and the thermal conductivity of the graphene thermal grease is correspondingly increased according to the mixture ratio of the components under the limitation of the components in the process of preparing the graphene thermal grease.
3. From the above table 3, compared with the existing lamp using the aluminum alloy 6063 radiator, the lamp of the invention has better heat dissipation effect and lower weight, is more suitable for being used in the education industry, and effectively solves the technical problems of poor heat dissipation and/or heavy weight of the existing lamp when being used in the education industry.
Where mentioned above are merely embodiments of the present invention, any feature disclosed in this specification may, unless stated otherwise, be replaced by alternative features serving equivalent or similar purposes; all of the disclosed features, or all of the method or process steps, may be combined in any combination, except mutually exclusive features and/or steps.
Claims (8)
1. The utility model provides an education is with graphite alkene heat dissipation lamps and lanterns which characterized in that: the LED light source board comprises a graphene composite heat-conducting plastic radiator and an LED light source board arranged on the graphene composite heat-conducting plastic radiator; the preparation method of the graphene composite heat-conducting plastic radiator comprises the following steps:
step 1: preparation of graphene transverse heat conduction granules
Primarily mixing 1-70 parts by weight of graphene, 1-70 parts by weight of graphite nanosheets and 1-10 parts by weight of fibrous fillers for 10-60min, adding 1-100 parts by weight of thermoplastic plastics after mixing, and extruding by using a screw at the decomposition temperature of the thermoplastic plastics to obtain graphene transverse heat conduction granules;
step 2: preparation of graphene longitudinal heat conduction granules
S1: firstly, adding 1-10 parts by weight of dispersing agent, 1-10 parts by weight of graphene and 1-30 parts by weight of spherical alumina powder into 1-100 parts by weight of water, dispersing for 10-60min at the rotating speed of 100-10000r/min to obtain pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene-coated alumina;
s2: adding 1-70 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 1-100 parts by weight of thermoplastic plastic, and then carrying out screw extrusion at the decomposition temperature of the thermoplastic plastic to obtain graphene longitudinal heat-conducting granules;
and step 3: preparation of graphene composite heat-conducting plastic radiator
Carrying out heat conduction on the graphene transverse heat conduction granules and the graphene longitudinal heat conduction granules according to the proportion of 1-1: and (3) carrying out two-layer co-extrusion according to the mass ratio of 1-9 to obtain the graphene composite heat-conducting plastic radiator with the outer heat-conducting layer with transverse heat-conducting performance and the inner heat-conducting layer with longitudinal heat-conducting performance.
2. The graphene heat dissipation lamp for education as claimed in claim 1, wherein: in the step 1, the graphene is formed by mixing three types of materials with the layer number of 1-10 layers and the sheet diameters of 1-10um, 10-50um and 50-100um according to the mass ratio of 1-3.
3. The graphene heat dissipation lamp for education as claimed in claim 1, wherein: in the step 1, the graphite nanosheet is formed by mixing three types of graphite nanosheets with the number of layers being 20-300, the sheet diameters being 10-20um, 20-50um and 50-100um according to the mass ratio of 1-6.
4. The graphene heat dissipation lamp for education as claimed in claim 1, wherein: in step 1, the fiber filler is carbon nano tube or carbon fiber, the diameter is 2nm-100nm, and the length is 1-30um.
5. The graphene heat dissipation lamp for education as claimed in claim 1, wherein: in the step 2, the number of layers of the graphene is 1-10, and the sheet diameter is 10-20um.
6. The graphene heat dissipation lamp for education as claimed in claim 1, wherein: in the step 2, the dispersing agent is one or more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, hexadecyl ammonium bromide, polyoxyethylene lauryl ether, tween, triton, sodium lignosulfonate, sodium polystyrene sulfonate, polyvinylpyrrolidone, polyacrylamide, aqueous dispersion of polyvinyl alcohol, polyethylene glycol, natural macromolecular saccharides and derivatives thereof, which are mixed according to any proportion.
7. The graphene heat dissipation lamp for education as claimed in claim 1, wherein: the thermoplastic plastic is one or a plurality of PP resin, HDPE resin, PA resin, ABS resin, PBT resin, PET resin and PI resin which are mixed according to any proportion.
8. The graphene heat dissipation lamp for education as claimed in any one of claims 1-7, wherein: the graphene composite heat-conducting plastic radiator is provided with an embedding groove, graphene heat-conducting silicone grease is filled between the embedding groove and the LED light source plate, and the preparation method of the graphene heat-conducting silicone grease comprises the following steps:
step (1): firstly, adding 1-10 parts by weight of dispersing agent, 1-10 parts by weight of graphene and 1-30 parts by weight of spherical alumina powder into 1-100 parts by weight of water, dispersing for 10-60min at the rotating speed of 100-10000r/min to obtain pre-dispersion liquid, and then carrying out spray drying on the pre-dispersion liquid to form the spherical heat-conducting filler of graphene-coated alumina;
step (2): adding 1-100 parts by weight of spherical heat-conducting filler of graphene-coated alumina into 1-10 parts by weight of dimethyl silicone oil, pre-stirring for 10-30min under the planetary stirring condition of 100-1000r/min, further dispersing and grinding for 10-50 times by using a three-roll grinding machine, and performing centrifugal defoaming to obtain the graphene heat-conducting silicone grease.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514066A (en) * | 2016-01-19 | 2016-04-20 | 合肥微晶材料科技有限公司 | Composite graphene infrared radiation and heat conduction film and manufacturing method thereof |
| CN107325377A (en) * | 2017-08-10 | 2017-11-07 | 厦门科新材料有限公司 | High-efficient graphite alkene nano modification heat sink material and preparation method thereof |
| CN107352533A (en) * | 2017-07-10 | 2017-11-17 | 中国石油大学(北京) | Flexible heat conducting film using more particle diameter graphenes synergy and preparation method thereof |
| CN108976700A (en) * | 2018-08-17 | 2018-12-11 | 厦门凯纳石墨烯技术股份有限公司 | Controllable method for preparing based on the modified high thermal conductivity carbon-plastic alloy of high degree of piling up graphene |
| CN109988484A (en) * | 2019-03-14 | 2019-07-09 | 上海利物盛纳米科技有限公司 | A kind of graphene water-based cooling coating and preparation method thereof |
| CN111978931A (en) * | 2020-08-27 | 2020-11-24 | 清华大学深圳国际研究生院 | Graphene composite slurry, graphite heat dissipation film structure and preparation method thereof |
| CN112457625A (en) * | 2020-11-19 | 2021-03-09 | 四川依菲兰科技有限公司 | Graphene composite material, graphene composite heat-conducting plastic and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI703921B (en) * | 2019-10-01 | 2020-09-01 | 十銓科技股份有限公司 | Dissipating heat device |
-
2021
- 2021-06-24 CN CN202110704371.8A patent/CN113357571B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514066A (en) * | 2016-01-19 | 2016-04-20 | 合肥微晶材料科技有限公司 | Composite graphene infrared radiation and heat conduction film and manufacturing method thereof |
| CN107352533A (en) * | 2017-07-10 | 2017-11-17 | 中国石油大学(北京) | Flexible heat conducting film using more particle diameter graphenes synergy and preparation method thereof |
| CN107325377A (en) * | 2017-08-10 | 2017-11-07 | 厦门科新材料有限公司 | High-efficient graphite alkene nano modification heat sink material and preparation method thereof |
| CN108976700A (en) * | 2018-08-17 | 2018-12-11 | 厦门凯纳石墨烯技术股份有限公司 | Controllable method for preparing based on the modified high thermal conductivity carbon-plastic alloy of high degree of piling up graphene |
| CN109988484A (en) * | 2019-03-14 | 2019-07-09 | 上海利物盛纳米科技有限公司 | A kind of graphene water-based cooling coating and preparation method thereof |
| CN111978931A (en) * | 2020-08-27 | 2020-11-24 | 清华大学深圳国际研究生院 | Graphene composite slurry, graphite heat dissipation film structure and preparation method thereof |
| CN112457625A (en) * | 2020-11-19 | 2021-03-09 | 四川依菲兰科技有限公司 | Graphene composite material, graphene composite heat-conducting plastic and preparation method thereof |
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