CN109140385B - Car lamp part with anti-focusing and heat-dissipating functions and preparation method thereof - Google Patents
Car lamp part with anti-focusing and heat-dissipating functions and preparation method thereof Download PDFInfo
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- CN109140385B CN109140385B CN201811197155.3A CN201811197155A CN109140385B CN 109140385 B CN109140385 B CN 109140385B CN 201811197155 A CN201811197155 A CN 201811197155A CN 109140385 B CN109140385 B CN 109140385B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Body Structure For Vehicles (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention provides a car lamp part with an anti-focusing heat dissipation function and a preparation method thereof, wherein the car lamp part comprises a heat dissipation part with focusing risk; the radiating part at the focusing risk is formed by compounding one or two of heat-conducting plastics and common plastics; the inner side surface or the outer side surface of the heat dissipation part is coated with one or two of a heat conduction coating, a heat conduction film and a plating layer. The car lamp part ensures the high flatness and high gloss of the appearance of the car part, simultaneously ensures that local high heat is rapidly diffused to the position with lower temperature of the part, avoids part damage caused by local overheating, has simple structure, does not influence the structure and the function of the car lamp part, has low manufacturing cost, does not increase the weight of the car lamp part, and meets the requirements of consumers with higher appearance requirements.
Description
Technical Field
The invention relates to the field of automobile lamp manufacturing and processing, in particular to an automobile lamp part with an anti-focusing and heat-dissipating function and a manufacturing method thereof.
Background
The car lamp is used as a light fitting on the car, has very large effect, mainly plays the roles of illumination and signals, and the light emitted by the front lamp can illuminate the road condition in front of the car body, so that a driver can safely drive in the dark, and the rear car lamp generally comprises a rear lamp, a reversing lamp, a brake lamp, a rear fog lamp, a rear steering lamp and a reflector. Turn signal lights are used to indicate to other road users either left or right turn light fixtures. The functions and actions of the lamps at different positions of the automobile are different.
Under the current development condition, as the function of the car lamp is improved, an optical system of the car lamp becomes more and more complex, and under certain conditions, after the car lamp is irradiated by sunlight, light rays are focused on certain parts of the car lamp after passing through the optical system of the car lamp, so that the parts are burnt. In particular, plastic parts can be damaged due to too high temperature, which affects the appearance and also the service life.
Aiming at the problem of sunlight focusing in the car lamp, the current adopted method is to change the structure or improve the temperature resistance level of burnt materials, replace the burnt materials with metal materials, increase the surface coating of parts and the like to relieve the problems. However, these methods not only are difficult to solve the problems completely, but also affect the appearance of the vehicle lamp, increase the cost, increase the weight of the vehicle lamp, and do not solve the problems fundamentally, so finding a method which does not damage the structure of the vehicle lamp, has low cost, and can solve the sunlight focusing problem well becomes a technical problem to be solved urgently at present.
In view of this, the present invention has been made.
Disclosure of Invention
The first object of the invention is to provide a car lamp part with anti-focusing heat dissipation function, which ensures the high flatness and high gloss of the appearance of the car lamp part, simultaneously ensures that local high heat is rapidly diffused to the position with lower temperature of the part, avoids part damage caused by local overheating, has simple structure, does not influence the structure and function of the car lamp part, has low manufacturing cost, does not increase the weight of the car lamp part, and meets the requirements of consumers with higher requirements on the appearance.
The second object of the invention is to provide a specific preparation method of the car lamp part, which has simple process steps, convenient operation and tight connection of steps before and after operation, provides a referential basis for subsequent operation, and the prepared car lamp part has excellent focusing and heat dissipation resistance, has no influence on the service performance, ensures the service life and is worthy of wide popularization and application.
In order to achieve the above object of the present invention, the following technical solutions are specifically adopted:
the invention provides a car lamp part with an anti-focusing heat dissipation function, which comprises a heat dissipation part with focusing risk;
the radiating part at the focusing risk is formed by compounding one or two of heat-conducting plastics and common plastics;
one or two of a heat conducting coating, a heat conducting film and a plating layer are coated on the inner side surface or the outer side surface of the heat radiating part;
preferably, the inner side surface of the heat dissipation part is covered with a heat conduction coating, and the outer side surface of the heat dissipation part is covered with a heat conduction film;
preferably, the inner side surface of the heat dissipation part is coated with a heat conduction coating, and the outer side surface of the heat dissipation part is coated with a plating layer;
preferably, the outer side surface of the heat dissipation part is covered with a heat conduction coating or a heat conduction film;
preferably, the heat dissipation part is any one of a double-material injection molding part, a double-material hot-pressing part and a double-material welding part of heat conduction plastics and common plastics.
In the prior art, as the function of the car lamp is improved, the optical system of the car lamp becomes more and more complex, and under certain conditions, after the car lamp is irradiated by sunlight, light rays are focused on certain parts of the car lamp after passing through the optical system of the car lamp, so that the parts are burnt. In particular, plastic parts can be damaged due to too high temperature, which affects the appearance and also the service life.
Aiming at the problem of sunlight focusing in the car lamp, the current adopted method is to change the structure or improve the temperature resistance level of burnt materials, replace the burnt materials with metal materials, increase the surface coating of parts and the like to relieve the problems. However, these methods not only hardly solve the problems completely, but also affect the appearance of the lamp itself, increase the cost, increase the weight of the lamp itself, and do not solve the problems fundamentally.
In order to solve the technical problems, the invention provides a car lamp part with an anti-focusing heat dissipation function, wherein a heat dissipation part body of the car lamp part is prepared by adopting one or two of heat conduction plastics and common plastics to carry out injection molding, hot pressing or welding, the heat conduction effect is improved by adopting the heat conduction plastics or the heat conduction plastics and the common plastics in a double-material injection molding mode, the materials of the plastics are relatively light, the weight of the heat dissipation part is not increased, and the car lamp part has a good heat conduction function.
The heat-conducting coating, the heat-conducting film or the plating layer is further coated on the inner side surface or the outer side surface of the heat-radiating part, the plating layer mainly has the effect of decorating the appearance, one or two of the heat-conducting coating, the heat-conducting film and the plating layer can be coated at the same time, and only one heat-radiating measure can be adopted according to the actual situation.
Compared with the prior art, the invention has the beneficial effects that:
(1) The car lamp part with the anti-focusing heat dissipation function ensures the high flatness and high gloss of the appearance of the car part, simultaneously ensures that local high heat is rapidly diffused to the position with lower temperature of the part, avoids part damage caused by local overheating, has simple structure, does not influence the structure and function of the car lamp part, has low manufacturing cost, does not increase the weight of the car lamp part, and meets the requirements of consumers with higher appearance requirements;
(2) The car lamp part has simple structure, low manufacturing cost and changeable appearance, and is deeply favored by consumers;
(3) The specific preparation method of the car lamp part has the advantages of simple process steps, convenient operation, tight connection of the steps before and after the operation, reference for the subsequent operation, excellent focusing and heat dissipation resistance of the prepared car lamp part, no influence on the service performance, ensured service life and wide popularization and application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a specific structure of a lamp part according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a specific structure of a lamp part according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of a specific structure of a lamp part according to a third embodiment of the present invention;
fig. 4 is a schematic diagram of a specific structure of a lamp part according to a fourth embodiment of the present invention.
Reference numerals:
1-a common plastic layer; 2-a heat conducting plastic layer;
3-a thermally conductive coating; 4-a heat conductive film;
5-plating; 6-heat conducting plastic fins.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that certain terms indicating orientations or positional relationships are merely used to facilitate the description of the present invention and to simplify the description, and are not meant to indicate or imply that the devices or elements being referred to must be oriented, configured and operated in a particular orientation, and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that "connected" is to be understood in a broad sense, for example, may be a fixed connection, may be a detachable connection, or may be integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of the three elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In order to achieve the above object of the present invention, the following technical solutions are specifically adopted:
the invention provides a car lamp part with an anti-focusing heat dissipation function, which comprises a heat dissipation part with focusing risk;
the radiating part at the focusing risk is formed by compounding one or two of heat-conducting plastics and common plastics;
one or two of a heat conducting coating, a heat conducting film and a plating layer are coated on the inner side surface or the outer side surface of the heat radiating part;
preferably, the inner side surface of the heat dissipation part is covered with a heat conduction coating, and the outer side surface of the heat dissipation part is covered with a heat conduction film;
preferably, the inner side surface of the heat dissipation part is coated with a heat conduction coating, and the outer side surface of the heat dissipation part is coated with a plating layer;
preferably, the outer side surface of the heat dissipation part is covered with a heat conduction coating or a heat conduction film;
preferably, the heat dissipation part is any one of a double-material injection molding part, a double-material hot-pressing part and a double-material welding part of heat conduction plastics and common plastics.
In order to solve the technical problems, the invention provides a car lamp part with an anti-focusing heat dissipation function, wherein a heat dissipation part body of the car lamp part is prepared by adopting one or two of heat conduction plastics and common plastics to carry out injection molding, hot pressing or welding, the heat conduction effect is improved by adopting the heat conduction plastics or the heat conduction plastics and the common plastics in a double-material injection molding mode, the materials of the plastics are relatively light, the weight of the heat dissipation part is not increased, and the car lamp part has a good heat conduction function.
The heat-conducting coating, the heat-conducting film or the plating layer is further coated on the inner side surface or the outer side surface of the heat-radiating part, the plating layer mainly has the effect of decorating the appearance, the heat-conducting coating and the heat-conducting film can be coated at the same time, or only one heat-radiating measure can be adopted according to the actual situation, the various preferred schemes enumerate different situations of the heat-radiating treatment of the car lamp part, and the scheme that only one or two of the heat-conducting coating, the heat-conducting film and the plating layer are adopted is within the protection scope of the invention.
The automobile part processed by the heat dissipation measure has the advantages that the heat conduction coefficient can reach more than 1.3W/m.K through detection, the heat dissipation effect is good, the inherent mechanical performance of the automobile part is not reduced, and the service life of the automobile part is prolonged.
Preferably, as a further implementation manner, the heat dissipation part of focusing risk includes any one of a lens, a lens mirror, a light guide, a decorative ring on a condenser, a decorative ring, a reflecting mirror and a bracket.
Various accessories with focusing risks on the car lamp are all in the protection scope of the invention, and the structure of the invention can be adopted for focusing resistance and heat dissipation.
Preferably, as a further implementable embodiment, the heat-conducting plastic comprises any one or a combination of a plurality of heat-conducting PA6, heat-conducting PA66, heat-conducting PC, heat-conducting PP, heat-conducting PBT, heat-conducting PET and heat-conducting ABS;
preferably, as a further implementation scheme, the common plastic comprises any one or a combination of a plurality of PA6, PA66, PC-HT, PBT, PET, PP, ABS, PC +ABS and PMMA materials.
Preferably, as a further implementable embodiment, the heat-conducting coating comprises one or more of a graphene coating, a carbon nanotube coating, a heat-conducting graphite coating, and a heat-conducting metal coating;
preferably, the heat conducting film comprises one or more of a graphite heat conducting film, a graphene heat conducting film, a carbon nano tube heat conducting film and a metal heat conducting film;
preferably, the plating layer comprises any one of vacuum plating, chemical plating and paint coating.
In each of the above structures, the composition of the heat conductive coating and the heat conductive film directly determines the excellent degree of heat dissipation, so that the composition of the heat conductive coating and the heat conductive film is optimized, and specifically, the heat conductive coating or the heat conductive film is mainly prepared from the following raw materials: 1-2 parts of graphene, 2-3 parts of silicone oil, 3-4 parts of amino acid modified magnesium powder and 8-10 parts of diethyl citrate.
Preferably, as a further implementable embodiment, 1.5-1.8 parts of graphene, 2.2-2.8 parts of silicone oil, 3.2-3.8 parts of amino acid modified magnesium powder and 8.5-9.5 parts of diethyl citrate in parts by weight.
Graphene and silicone oil have excellent heat dissipation function, and after the magnesium powder is modified by adopting amino acid, the microstructure of the magnesium powder is more stable and regular, the disordered microstructure is changed, the defects of heat conduction channels are reduced, the heat conduction channels are more regular, excellent mechanical properties are ensured, and the heat conductivity, strength, compression resistance and other mechanical properties of the heat conduction coating and the heat conduction film are obviously improved after the heat conduction coating and the heat conduction film are prepared and molded.
The inventor further optimizes the dosage of each component after a large amount of practice, and the dosage of the diethyl citrate is relatively larger in order to better mix other components into uniform substances, but the dosage of the graphene, the silicone oil and the magnesium powder needs to be strictly controlled, because the graphene is easy to agglomerate, and if the dosage is too large, the mechanical property of the graphene is influenced, the heat conduction channel is blocked, so that the effect of the graphene is counterproductive. The magnesium powder needs to be modified because the magnesium powder and the graphene are all powder, aggregation easily occurs after mixing, the magnesium powder is not easy to agglomerate after mixing after modification, but better synergistic effect can be achieved after mixing
Preferably, as a further embodiment, the method of amino acid-modified magnesium powder comprises:
uniformly spreading magnesium powder, spraying a coupling agent solution on the surface, standing for a period of time, and drying; soaking in amino acid solution, stirring, heating, filtering, and oven drying.
Preferably, as a further implementation scheme, the heating temperature is controlled between 30-40 ℃, and the heating time is controlled between 1-2h;
preferably, the coupling agent is a silane coupling agent;
preferably, the concentration of the coupling agent solution is controlled between 30 and 40 wt%;
preferably, the time of standing is 2-3 hours.
Preferably, the amino acid is one of lysine, arginine and proline;
preferably, the concentration of the amino acid solution is controlled between 10-20 wt%.
Therefore, the specific modification method is simpler, and the heating is used for improving the dipping effect, so that the amino acid and the magnesium powder can be fused better.
In addition, the embodiment of the invention also provides a preparation method of the car lamp part, which comprises the following steps:
and (3) performing double-layer injection molding, hot pressing or welding on the heat-conducting plastic and the common plastic to form a heat-radiating part, and coating a heat-conducting coating, a heat-conducting film and a plating layer on the inner side surface or the outer side surface of the heat-radiating part for surface treatment.
The following is a detailed description of the present invention by way of specific examples:
example 1
The preparation method of the car lamp part specifically comprises the following steps:
the specific structure is as shown in fig. 1, the front side of the car lamp part is provided with a heat dissipation part decorative ring in a focusing risk area, a common PC plastic layer 1 is adopted to be formed by double-layer welding with a heat conduction PA6 plastic layer 2, the common plastic layer 1 is arranged on the outer side, the appearance of the decorative ring is guaranteed, and the heat conduction PA6 plastic layer 2 is arranged on the inner side. Wherein, the thickness of the common PC plastic layer 1 is 0.3mm, and the thickness of the heat conduction PA6 plastic layer 2 is 2.5mm. Vacuum aluminizing is carried out on the surface of the common plastic layer 1 to form a coating 5, high heat on the surface is rapidly diffused to a low-temperature area, the focus temperature is difficult to rise, the appearance of a part is ensured, and heat dissipation is not influenced.
Example 2
The specific structure is as shown in fig. 2, the heat dissipation part reflector of the side rear part focused risk area on the car lamp part is formed by double-layer injection molding with the heat conduction PC plastic, the heat conduction PC plastic layer 2 is arranged on the outer side of the reflector, the common plastic layer 1 is arranged on the inner side of the reflector, the common plastic layer 1 ensures the smoothness of the reflecting surface of the reflector, the surface of the common plastic layer 1 is subjected to vacuum aluminizing to form a coating 5, the high heat on the surface is rapidly diffused to a low-temperature area, the focus temperature is difficult to rise, the appearance of the part is ensured, and the heat dissipation is not influenced.
In addition, the heat dissipation capacity of the reflector is increased by designing an integrated fin structure 6 for heat dissipation on the heat-conducting PC plastic layer 2, the fin wall thickness is 2.0-4.0mm, high heat on the surface is rapidly diffused to a low-temperature area by the heat-conducting plastic layer 2 and the heat-conducting plastic fins 6, the mirror surface is guaranteed to have a mirror surface effect, and the light shape design of the car lamp is not influenced.
Example 3
The specific structure is as shown in fig. 3, the heat dissipation part decorative ring of the focusing risk area around the car lamp part is formed by double-layer hot pressing with the heat conduction PC plastic by adopting common PC-HT plastic, the common plastic layer 1 is the outer side, the appearance of the decorative ring is ensured, the heat conduction PC plastic layer 2 is the inner side, the heat dissipation effect is improved by attaching the heat conduction film 4 on the surface of the common plastic layer 1, and the specific preparation method of the heat conduction film 4 is as follows:
1) Uniformly spreading magnesium powder, spraying silane coupling agent solution with the concentration of 40wt% on the surface, standing for 3 hours, and drying in a drying oven;
2) The treated magnesium powder is soaked in arginine solution with the concentration of 10 weight percent, stirred for 1 to 2 hours, heated at 30 ℃ while being stirred, filtered out and dried in a drying oven.
3) 40g of the arginine modified magnesium powder is mixed with 20g of graphene, 20g of silicone oil and 100g of diethyl citrate to prepare the heat-conducting film 4.
Example 4
The specific structure is as shown in fig. 4, the heat dissipation part decorative ring of the focusing risk area around the car lamp part is formed by double-layer hot pressing with the heat conduction PC plastic by adopting common PC-HT plastic, the common plastic layer 1 is the outer side, the appearance of the decorative ring is ensured, the heat conduction PC plastic layer 2 is the inner side, the heat dissipation effect is improved by attaching the heat conduction coating 3 on the surface of the common plastic layer 1, and the specific preparation method of the heat conduction coating 3 is as follows:
1) Uniformly spreading magnesium powder, spraying silane coupling agent solution with the concentration of 30wt% on the surface, standing for 3 hours, and drying in a drying oven;
2) The treated magnesium powder is soaked in arginine solution with the concentration of 20 weight percent, stirred for 2 to 3 hours, heated at 40 ℃ while being stirred, filtered out and dried in a drying oven.
3) 30g of the arginine modified magnesium powder is mixed with 10g of graphene, 30g of silicone oil and 80g of diethyl citrate to prepare the heat-conducting coating.
Example 5
The specific operation steps are the same as those of the embodiment 3, except that the inner side surface of the heat conduction plastic layer 2 is subjected to vacuum aluminum plating to form a plating layer 5, and finally 38g of arginine modified magnesium powder, 15g of graphene, 28g of silicone oil and 85g of diethyl citrate are prepared.
Example 6
The specific operation steps are the same as in example 3, except that 32g of arginine modified magnesium powder, 18g of graphene, 22g of silicone oil and 95g of diethyl citrate are taken on the final ingredients.
Comparative example 1
The car lamp part is made of metal materials.
Experimental example 1
TABLE 1 Performance test results
| Main physical and chemical index | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Comparative example 1 |
| Yield strength, mpa | 75 | 80 | 83 | 83 | 83 | 83 | 50 |
| Flexural strength, mpa | 120 | 138 | 151 | 151 | 151 | 151 | 90 |
| Elongation after break (%) | ≥1％ | ≥1％ | ≥1％ | ≥1％ | ≥1％ | ≥1％ | ≥1％ |
| Coefficient of thermal conductivity (W/m.K) | 3.0 | 3.2 | 3.3 | 3.3 | 3.3 | 3.3 | 1.0 |
| Rockwell hardness (R) | 100 | 120 | 110 | 50 | 50 | 50 | 80 |
While particular embodiments of the present invention have been illustrated and described, it will be appreciated that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (15)
1. The car lamp part with the anti-focusing heat dissipation function is characterized by comprising a heat dissipation part with focusing risk;
the radiating part at the focusing risk is formed by compounding heat conducting plastic and common plastic;
one or two of a heat conducting coating, a heat conducting film and a plating layer are coated on the inner side surface or the outer side surface of the heat radiating part;
the heat-conducting coating or the heat-conducting film is mainly prepared from the following raw materials: 1-2 parts of graphene, 2-3 parts of silicone oil, 3-4 parts of amino acid modified magnesium powder and 8-10 parts of diethyl citrate;
the preparation method of the amino acid modified magnesium powder comprises the following steps:
uniformly spreading magnesium powder, spraying a coupling agent solution on the surface, standing for a period of time, and drying;
soaking in amino acid solution, stirring, heating, filtering, and oven drying.
2. The vehicle lamp part according to claim 1, wherein an inner side of the heat dissipating part is coated with a heat conductive coating and an outer side of the heat dissipating part is coated with a heat conductive film.
3. The vehicle lamp part according to claim 1, wherein an inner side of the heat dissipating part is coated with a heat conductive coating and an outer side of the heat dissipating part is coated with a plating.
4. The vehicle lamp part according to claim 1, wherein an outer side surface of the heat radiating part is covered with a heat conductive coating or a heat conductive film.
5. The vehicle lamp part according to claim 1, wherein the heat dissipation part is any one of a two-material injection molded part, a two-material hot pressed part, and a two-material welded part of a heat conductive plastic and a common plastic.
6. The vehicle lamp part according to claim 1, wherein the heat dissipation part at risk of focusing comprises any one of a lens, a light guide, a bezel on a condenser, a bezel, a mirror, and a bracket.
7. The vehicle lamp part according to claim 1, wherein the heat conductive plastic comprises any one or a combination of several of heat conductive PA6, heat conductive PA66, heat conductive PC, heat conductive PP, heat conductive PBT, heat conductive PET and heat conductive ABS.
8. The vehicle lamp part according to claim 1, wherein the common plastic comprises any one or a combination of several of PA6, PA66, PC, PBT, PET, PP, ABS and PMMA materials.
9. The vehicle lamp part of claim 1, wherein the thermally conductive coating comprises one or more of a graphene coating, a carbon nanotube coating, a thermally conductive graphite coating, and a thermally conductive metal coating.
10. The vehicle lamp part according to claim 1, wherein the heat conductive film comprises a composite of one or more of a graphite heat conductive film, a graphene heat conductive film, a carbon nanotube heat conductive film, and a metal heat conductive film.
11. The vehicle lamp part according to claim 1, wherein the plating layer comprises any one of a vacuum plating film, an electroless plating film, and a paint layer.
12. The vehicle lamp part according to claim 1, wherein the thermally conductive coating or film is mainly made of: 1.5-1.8 parts of graphene, 2.2-2.8 parts of silicone oil, 3.2-3.8 parts of amino acid modified magnesium powder and 8.5-9.5 parts of diethyl citrate.
13. The vehicle lamp part according to claim 1, wherein the heating temperature is controlled between 30-40 ℃ and the heating time is controlled between 1-2 hours.
14. The vehicle lamp part according to claim 1, wherein the coupling agent is a silane coupling agent.
15. The method for manufacturing a lamp part according to any one of claims 1 to 14, comprising the steps of:
and carrying out double-layer injection molding, double-layer hot pressing or double-layer welding on the heat-conducting plastic and the common plastic to form a heat-radiating part, and carrying out surface treatment on one or two of a heat-conducting coating, a heat-conducting film and a plating layer on the inner side surface or the outer side surface of the heat-radiating part.
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| CN109990249A (en) * | 2019-04-16 | 2019-07-09 | 华域视觉科技(上海)有限公司 | Car light heat dissipation case ring |
| FR3104682A1 (en) * | 2019-12-11 | 2021-06-18 | Valeo Vision | Lighting device using orthotropic material |
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