Modified polycarbonate material lampshade and preparation method thereof

The technology of polycarbonate and lampshade is applied in the field of preparation of lighting lamp cover, which can solve the problems of adding many components and high preparation cost, and achieve the effect of reducing the preparation cost.

Inactive Publication Date: 2016-02-24
陈桂兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, there is a problem in the above patents, that is, more other components are added, and the preparation cost is higher, which limits its popularization and application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A modified polycarbonate material lampshade, the parts by weight of each component of the raw material are:

[0024] 40 parts of polycarbonate, 20 parts of silicone, 10 parts of polystyrene, 1 part of stabilizer, 1 part of emulsifier, 1 part of antioxidant, 0.1 part of organic light diffusing agent.

[0025] Its preparation method comprises the following steps:

[0026] Polycarbonate, silicone, and polystyrene are mixed evenly, and the composite material is prepared by double extrusion in a twin-screw extruder. The temperature of the first extrusion is 130°C, and the temperature of the second extrusion is 200°C. , the straight air degree during extrusion granulation processing is 1.2MPa; the modified composite material granules are mixed with emulsifier, stabilizer, antioxidant and light diffusing agent, heated to a molten state and poured into the mold to cool, and the finished product is obtained.

Embodiment 2

[0028] A modified polycarbonate material lampshade, the parts by weight of each component of the raw material are:

[0029] 45 parts of polycarbonate, 25 parts of silicone, 15 parts of polystyrene, 5 parts of stabilizer, 3 parts of emulsifier, 5 parts of antioxidant, 0.5 part of organic light diffusing agent;

[0030] Its preparation method comprises the following steps:

[0031] Polycarbonate, silicone, and polystyrene are mixed evenly, and the composite material is prepared by secondary extrusion in a twin-screw extruder. The temperature of the first extrusion is 130~140°C, and the temperature of the second extrusion is 200~210℃, the straight air degree during extrusion granulation is 1.2MPa~1.6MPa; mix the modified composite material granules with emulsifier, stabilizer, antioxidant and light diffusing agent, heat to molten state and pour the mold to cool. That is the finished product.

Embodiment 3

[0033] A modified polycarbonate material lampshade, the parts by weight of each component of the raw material are:

[0034] 43 parts of polycarbonate, 23 parts of silicone, 13 parts of polystyrene, 3 parts of stabilizer, 2 parts of emulsifier, 3 parts of antioxidant, 0.3 part of organic light diffusing agent.

[0035] Its preparation method comprises the following steps:

[0036] Polycarbonate, silicone, and polystyrene are mixed evenly, and the composite material is prepared by secondary extrusion in a twin-screw extruder. The temperature of the first extrusion is 135°C, and the temperature of the second extrusion is 205°C. , the straight air degree during extrusion granulation processing is 1.4MPa; the modified composite material granules are mixed with emulsifier, stabilizer, antioxidant and light diffusing agent, heated to a molten state and poured into the mold to cool, and the finished product is obtained.

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PUM

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Abstract

The invention relates to a modified polycarbonate material lampshade and its preparation method, and belongs to the technical field of illumination lamps' lampshades. Raw materials of the modified polycarbonate material lampshade comprise, by weight, 40-45 parts of polycarbonate, 20-25 parts of silicone, 10-15 parts of polystyrene, 1-5 parts of a stabilizing agent, 1-3 parts of an emulsifier, 1-5 parts of an antioxidant and 0.1-0.5 part of an organic light diffusion agent. The preparation method comprises the following steps: uniformly stirring polycarbonate, silicone and polystyrene, and preparing a composite material in a twin-screw extruder by a twice extrusion method, wherein first extrusion temperature is 130-140 DEG C, second extrusion temperature is 200-210 DEG C, and vacuum degree during extrusion pelletization processing is 1.2-1.6 MPa; and mixing the modified composite material with the emulsifier, the stabilizing agent, the antioxidant and the light diffusion agent, heating to a molten state, reversing mold and cooling to obtain a finished product. The lampshade of the invention has characteristics of high light transmittance and anti-dazzling effect, and meets requirements of LED lamps' lampshades. By modifying polycarbonate, other additives are minimized, so as to reduce preparation cost.

Description

technical field [0001] The invention relates to a lampshade and a preparation method thereof, in particular to a modified polycarbonate material lampshade and a preparation method thereof, and belongs to the technical field of preparation of lighting fixture outer covers. Background technique [0002] Light-emitting diodes are referred to as LEDs for short. Made of compounds containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), etc. [0003] Due to its light-emitting characteristics of point light sources and high brightness, LEDs have disadvantages compared with conventional light sources such as strong light, glare, people can't look directly, or can't get soft visual effects in the field of lighting. In order to make up for the lack of application of LED light sources in the field of lighting, it is necessary to use special materials to transform the luminous characteristics of its point light source into a surface light source while maintaining a high lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L83/04C08L25/06B29C47/92B29B9/06B29C48/92
Inventor 陈桂兴
Owner 陈桂兴
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