Motorcycle lamp shade with high light transmission

Abstract

The invention discloses a motorcycle lamp shade with high light transmission, the motorcycle lamp shade comprises a shade body, and the shade body is prepared by the following steps: uniformly mixing raw materials of the shade body in a high-speed mixer according to a formula ratio; adding the obtained mixture into a screw extruder, melting the mixture, and extruding particles; drying the extruded particles, adding the dried particles into an injection molding machine, performing injection molding, cooling after injection molding, and demolding while hot to obtain a cover body; the cover body is prepared from the following raw materials in parts by mass: 10 parts of polyvinyl chloride, 35-45 parts of PC plastic, 7-9 parts of polystyrene and 1.5-2.0 parts of talcum powder; the automobile lamp cover has the advantages that the scratch resistance is improved, and the service life of the automobile lamp cover is prolonged.

Description

Technical Field

[0001] The invention relates to a lampshade of a motorcycle lamp with high light transmittance. Background Art

[0002] As people's quality of life continues to improve, the demand for product appearance and quality in all walks of life is also getting higher and higher. Especially for the automotive industry, which is increasingly demanding energy conservation and emission reduction, plastic products have been used more and more widely. Based on the different uses of car lights, they can be roughly divided into two categories. One is mainly used to provide lighting functions, such as fog lights and headlights. These two lights are mainly turned on at night and in foggy weather to provide drivers with enough light to see the road conditions; the other is to provide warning functions, such as brake lights and turn signals. The main function of this type of light is to provide warnings and guidance, and to remind other car owners and pedestrians through light signals. The headlight cover is the most obvious covering part of the entire headlight assembly. It has a protective effect on the inside of the headlight, and the quality of the headlight is directly reflected by the lampshade. Therefore, the lampshade is an important part of the entire headlight structure. With the continuous development of technology, the headlight cover has gradually evolved into a full plastic structure.

[0003] A Chinese patent with publication number CN103192509A discloses a PC plastic lampshade injection molding process, which includes the following steps: 1) raw material drying; 2) injection molding system and injection mold pretreatment; 3) plasticization; 4) injection; 5) pressure holding; 6) cooling and molding; 7) demolding.

[0004] PC plastic has high transparency and can be used to make lampshades for headlights. However, the disadvantage of PC plastic lampshades for headlights is that they have poor scratch resistance, which reduces the service life of the lampshades. Summary of the invention

[0005] The purpose of the present invention is to provide a motorcycle headlight cover with high light transmittance, which has the advantages of improving scratch resistance and increasing the service life of the headlight cover.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A motorcycle headlight lampshade with high light transmittance, the motorcycle headlight lampshade comprises a cover body, and the cover body is prepared by the following steps: The raw materials of the cover body are placed in a high-speed mixer according to the formula amount and mixed for 10 to 20 minutes to make them uniform; the obtained mixture is added to a screw extruder at 230 to 250° C., and the mixture is melted and then extruded into particles; the extruded particles are placed at 95 to 105° C. and dried for 5 to 8 hours, and the dried particles are added to an injection molding machine for injection molding, and after the injection molding is completed, the particles are cooled for 30 seconds to 90 seconds and demolded while hot to obtain the cover body; The raw materials of the cover body include polyvinyl chloride, PC plastic, polystyrene and talcum powder, and the formula amounts of polyvinyl chloride, PC plastic, polystyrene and talcum powder are 10, 35-45, 7-9 and 1.5-2.0 parts by weight respectively.

[0007] Furthermore, when preparing the cover body, the formula amounts of polyvinyl chloride, PC plastic, polystyrene and talcum powder are 10, 40, 8 and 1.8 parts by mass respectively.

[0008] Furthermore, the raw materials of the cover body include polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin and titanium dioxide, and the formula amounts of polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin and titanium dioxide are 10, 40, 8, 1.8, 0.4-0.6 and 3-5 parts by mass respectively.

[0009] Furthermore, the raw materials of the cover body include polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin, titanium dioxide, polypropylene acetonitrile and polyurethane resin, and the formula amounts of polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin, titanium dioxide, polypropylene acetonitrile and polyurethane resin are 10, 40, 8, 1.8, 0.5, 4, 2-4 and 2-4 parts by mass respectively.

[0010] Furthermore, the raw materials of the cover body include polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin, titanium dioxide, polypropylene acetonitrile and polyurethane resin, and the formula amounts of polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin, titanium dioxide, polypropylene acetonitrile and polyurethane resin are 10, 40, 8, 1.8, 0.5, 4, 3 and 3 parts by mass respectively.

[0011] Furthermore, the outer surface of the cover body is plated with a layer of aluminum film.

[0012] The technical effects of the present invention are mainly reflected in the following aspects: Using a mixture of PVC and PC plastic as the raw material of the lampshade can improve the light transmittance and increase the brightness of the headlights; adding polystyrene to PVC and PC plastics can improve the compatibility of PVC and PC plastics, improve product quality, and have a toughening effect, improve scratch resistance and wear resistance, and increase the service life of the headlight cover; By using polyvinyl chloride, PC plastic, polystyrene, SEBS resin and titanium dioxide, while ensuring high light transmittance, its tensile strength and flexural strength are significantly improved compared to pure PC plastic, its toughness is enhanced, and its mechanical properties are improved; after adding polypropylene acetonitrile and polyurethane resin, it has a similar structure to the strip tape, so the composite of the two is more fitted and the molding effect is better. DETAILED DESCRIPTION

[0013] Example 1: A motorcycle lampshade with high light transmittance is prepared by the following method: (1) Preparation of the mask 10 parts by mass of polyvinyl chloride, 40 parts by mass of PC plastic, 8 parts by mass of polystyrene and 1.8 parts by mass of talcum powder were placed in a high-speed mixer and mixed for 15 minutes to make them uniform; The obtained mixture was added to a screw extruder at 240°C, and the mixture was melted and then extruded into pellets; The extruded particles were placed at 100° C. and dried for 6 hours, and the dried particles were added into an injection molding machine for injection molding. After the injection molding was completed, the particles were cooled for 45 seconds and demolded while hot to obtain a cover body; (2) Preparation of tape The isoprene rubber, titanium dioxide, stearic acid and isocyanate are mixed in a mixer at 12MPa and 220°C for 30 minutes to obtain a slurry, and the slurry flows through a rectangular mold to obtain a strip tape; the raw materials of the strip tape include 94wt% of isoprene rubber, 4wt% of titanium dioxide, 1.2wt% of stearic acid and 0.8wt% of isocyanate; (3) Composite strip tape and lampshade Wipe the surface of the cover and the strip tape with water, ethanol, and acetone in turn. First, dip a small amount of isocyanate glue to pre-gel the strip tape for 5 minutes, then apply a uniform layer of isocyanate glue on the surface of the strip tape, and stick the strip tape on the cover along the edge of the cover corresponding to the position of the bulb. (4) Cover coating The surface of the cover body compounded with the strip tape is activated and cleaned in a vacuum chamber, and a layer of aluminum film is plated on the surface.

[0014] Example 2: A motorcycle lampshade with high light transmittance is prepared by the following method: (1) Preparation of the mask 10 parts by mass of polyvinyl chloride, 40 parts by mass of PC plastic, 8 parts by mass of polystyrene, 1.8 parts by mass of talcum powder, 0.4 parts by mass of SEBS resin and 3 parts by mass of titanium dioxide were placed in a high-speed mixer and mixed for 15 minutes to make them uniform; The obtained mixture was added to a screw extruder at 240°C, and the mixture was melted and then extruded into pellets; The extruded particles were placed at 100° C. and dried for 6 hours, and the dried particles were added into an injection molding machine for injection molding. After the injection molding was completed, the particles were cooled for 45 seconds and demolded while hot to obtain a cover body; (2) Preparation of tape The isoprene rubber, titanium dioxide, stearic acid and isocyanate are mixed in a mixer at 12MPa and 220°C for 30 minutes to obtain a slurry, and the slurry flows through a rectangular mold to obtain a strip tape; the raw materials of the strip tape include 94wt% of isoprene rubber, 4wt% of titanium dioxide, 1.2wt% of stearic acid and 0.8wt% of isocyanate; (3) Composite strip tape and lampshade Wipe the surface of the cover and the strip tape with water, ethanol, and acetone in turn. First, dip a small amount of isocyanate glue to pre-gel the strip tape for 5 minutes, then apply a uniform layer of isocyanate glue on the surface of the strip tape, and stick the strip tape on the cover along the edge of the cover corresponding to the position of the bulb. (4) Cover coating The surface of the cover body compounded with the strip tape is activated and cleaned in a vacuum chamber, and a layer of aluminum film is plated on the surface.

[0015] Example 3: A motorcycle lampshade with high light transmittance is prepared by the following method: (1) Preparation of the mask 10 parts by mass of polyvinyl chloride, 40 parts by mass of PC plastic, 8 parts by mass of polystyrene, 1.8 parts by mass of talcum powder, 0.6 parts by mass of SEBS resin and 5 parts by mass of titanium dioxide were placed in a high-speed mixer and mixed for 15 minutes to make them uniform; The obtained mixture was added to a screw extruder at 240°C, and the mixture was melted and then extruded into pellets; The extruded particles were placed at 100° C. and dried for 6 hours, and the dried particles were added into an injection molding machine for injection molding. After the injection molding was completed, the particles were cooled for 45 seconds and demolded while hot to obtain a cover body; (2) Preparation of tape The isoprene rubber, titanium dioxide, stearic acid and isocyanate are mixed in a mixer at 12MPa and 220°C for 30 minutes to obtain a slurry, and the slurry flows through a rectangular mold to obtain a strip tape; the raw materials of the strip tape include 94wt% of isoprene rubber, 4wt% of titanium dioxide, 1.2wt% of stearic acid and 0.8wt% of isocyanate; (3) Composite strip tape and lampshade Wipe the surface of the cover and the strip tape with water, ethanol, and acetone in turn. First, dip a small amount of isocyanate glue to pre-gel the strip tape for 5 minutes, then apply a uniform layer of isocyanate glue on the surface of the strip tape, and stick the strip tape on the cover along the edge of the cover corresponding to the position of the bulb. (4) Cover coating The surface of the cover body compounded with the strip tape is activated and cleaned in a vacuum chamber, and a layer of aluminum film is plated on the surface.

[0016] Example 4: A motorcycle lampshade with high light transmittance is prepared by the following method: (1) Preparation of the mask 10 parts by mass of polyvinyl chloride, 40 parts by mass of PC plastic, 8 parts by mass of polystyrene, 1.8 parts by mass of talc, 0.5 parts by mass of SEBS resin, 4 parts by mass of titanium dioxide, 3 parts by mass of polypropylene acetonitrile and 3 parts by mass of polyurethane resin were placed in a high-speed mixer and mixed for 15 minutes to make them uniform; The obtained mixture was added to a screw extruder at 240°C, and the mixture was melted and then extruded into pellets; The extruded particles were placed at 100° C. and dried for 6 hours, and the dried particles were added into an injection molding machine for injection molding. After the injection molding was completed, the particles were cooled for 45 seconds and demolded while hot to obtain a cover body; (2) Preparation of tape The isoprene rubber, titanium dioxide, stearic acid and isocyanate are mixed in a mixer at 12MPa and 220°C for 30 minutes to obtain a slurry, and the slurry flows through a rectangular mold to obtain a strip tape; the raw materials of the strip tape include 94wt% of isoprene rubber, 4wt% of titanium dioxide, 1.2wt% of stearic acid and 0.8wt% of isocyanate; (3) Composite strip tape and lampshade Wipe the surface of the cover and the strip tape with water, ethanol, and acetone in turn. First, dip a small amount of isocyanate glue to pre-gel the strip tape for 5 minutes, then apply a uniform layer of isocyanate glue on the surface of the strip tape, and stick the strip tape on the cover along the edge of the cover corresponding to the position of the bulb. (4) Cover coating The surface of the cover body compounded with the strip tape is activated and cleaned in a vacuum chamber, and a layer of aluminum film is plated on the surface.

[0017] Example 5: A motorcycle lampshade with high light transmittance is prepared by the following method: (1) Preparation of the mask 10 parts by mass of polyvinyl chloride, 40 parts by mass of PC plastic, 8 parts by mass of polystyrene, 1.8 parts by mass of talc, 0.5 parts by mass of SEBS resin, 4 parts by mass of titanium dioxide, 3 parts by mass of polypropylene acetonitrile and 3 parts by mass of polyurethane resin were placed in a high-speed mixer and mixed for 15 minutes to make them uniform; The obtained mixture was added to a screw extruder at 240°C, and the mixture was melted and then extruded into pellets; The extruded particles were placed at 100° C. and dried for 6 hours, and the dried particles were added into an injection molding machine for injection molding. After the injection molding was completed, the particles were cooled for 45 seconds and demolded while hot to obtain a cover body; (2) Preparation of tape The isoprene rubber, titanium dioxide, stearic acid and isocyanate are mixed in a mixer at 12MPa and 220°C for 30 minutes to obtain a slurry, and the slurry flows through a rectangular mold to obtain a strip tape; the raw materials of the strip tape include 94wt% of isoprene rubber, 4wt% of titanium dioxide, 1.2wt% of stearic acid and 0.8wt% of isocyanate; (3) Composite strip tape and lampshade Wipe the surface of the cover and the strip tape with water, ethanol, and acetone in turn. First, dip a small amount of isocyanate glue to pre-gel the strip tape for 5 minutes, then apply a uniform layer of isocyanate glue on the surface of the strip tape, and stick the strip tape on the cover along the edge of the cover corresponding to the position of the bulb. (4) Cover coating The surface of the cover body composited with the strip tape is activated and cleaned in a vacuum chamber, and a layer of TiO2 and Al2O3 mixed film is deposited on the surface by mixed evaporation using an electron evaporation process. The thickness of the mixed film is 2μm, and the mass ratio of TiO2 to Al2O3 is 7:1.

[0018] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A motorcycle lampshade with high light transmittance, characterized in that: The motorcycle lampshade comprises a cover body, and the cover body is prepared by the following steps: The raw materials of the cover body are placed in a high-speed mixer according to the formula amount and mixed for 10 to 20 minutes to make them uniform; the obtained mixture is added to a screw extruder at 230 to 250° C., and the mixture is melted and then extruded into particles; the extruded particles are placed at 95 to 105° C. and dried for 5 to 8 hours, and the dried particles are added to an injection molding machine for injection molding, and after the injection molding is completed, the particles are cooled for 30 seconds to 90 seconds and demolded while hot to obtain the cover body; The raw materials of the cover body include polyvinyl chloride, PC plastic, polystyrene and talcum powder, and the formula amounts of polyvinyl chloride, PC plastic, polystyrene and talcum powder are 10, 35-45, 7-9 and 1.5-2.0 parts by weight respectively.

2. A motorcycle lamp shade with high light transmittance according to claim 1, characterized in that When preparing the cover body, the formula amounts of polyvinyl chloride, PC plastic, polystyrene and talcum powder are 10, 40, 8 and 1.8 parts by mass respectively.

3. The motorcycle lampshade with high light transmittance according to claim 2 is characterized in that: The raw materials of the cover body include polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin and titanium dioxide, and the formula amounts of polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin and titanium dioxide are 10, 40, 8, 1.8, 0.4-0.6 and 3-5 parts by mass respectively.

4. The motorcycle lampshade with high light transmittance according to claim 3 is characterized in that: The raw materials of the cover body include polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin, titanium dioxide, polypropylene acetonitrile and polyurethane resin. The formula amounts of polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin, titanium dioxide, polypropylene acetonitrile and polyurethane resin are 10, 40, 8, 1.8, 0.5, 4, 2-4 and 2-4 parts by mass respectively.

5. The motorcycle headlight cover with high light transmittance according to claim 4, characterized in that: The raw materials of the cover body include polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin, titanium dioxide, polypropylene acetonitrile and polyurethane resin. The formula amounts of polyvinyl chloride, PC plastic, polystyrene, talcum powder, SEBS resin, titanium dioxide, polypropylene acetonitrile and polyurethane resin are 10, 40, 8, 1.8, 0.5, 4, 3 and 3 parts by mass respectively.

6. The motorcycle lampshade with high light transmittance according to claim 1, characterized in that: The outer surface of the cover body is plated with an aluminum film.