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PC composite material, as well as preparation method and application thereof

A technology of composite materials and mixtures, which is applied in the field of engineering plastics, can solve problems such as insufficient toughness, and achieve the effects of low cost, simple operation, and good toughening effect

Inactive Publication Date: 2013-04-17
ANHUI KEJU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention provides a PC composite material to solve the technical problem of insufficient toughness when the PC composite material is used as a lampshade in the prior art; and the preparation method and application of the PC composite material

Method used

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  • PC composite material, as well as preparation method and application thereof
  • PC composite material, as well as preparation method and application thereof

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preparation example Construction

[0030] The embodiment of the present invention further provides the above PC composite material preparation method, comprising the following steps:

[0031] Step S01, providing raw materials:

[0032] Provide the polycarbonate, lubricant and / or antioxidant, and light diffusing agent in proportion;

[0033] Step S02, mixing:

[0034] mixing the polycarbonate, a lubricant and / or an antioxidant, and a light diffusing agent to obtain a mixture;

[0035] Step S03, melt extrusion:

[0036] The mixture was melt-extruded to obtain a PC composite material.

[0037] Specifically, in step S01, the polycarbonate, lubricant and / or antioxidant, and light diffusing agent are the same as those described above, and will not be repeated here. In step S01, the PC resin is a dried PC resin, and the drying method is not limited, for example, drying in a drying oven at 120° C. for 4 hours.

[0038] In step S02, the polycarbonate, lubricant and / or antioxidant, and light diffusing agent are plac...

Embodiment 1

[0045] Materials weighed: 99% PC resin, 0.5% impact light diffuser, 0.2% antioxidant, and 0.3% lubricant. Dry PC resin in a drying oven at 120°C for 4 hours, add impact modifier, antioxidant, lubricant, mix in a high-speed mixer at 400r / min for 15min, and extrude through a twin-screw extruder Granules, twin-screw process parameters are: zone 1 180-220℃, zone 2 220-240℃, zone 3 240-260℃, zone 4 240-260℃, zone 5 220-240℃, zone 6 210-230℃, The seventh zone is 200-200°C, the eighth zone is 220-240°C, the die head temperature is 250-270°C, and the rotation speed is 300-450r / min.

[0046] After the extrusion granulation is completed, the obtained particles are dried at 120°C for 4 hours, part of which is used to inject ASTM standard specimens to test the mechanical properties of the material, and part of which is injected into 1mm and 2mm thick plates for testing light transmittance and haze .

Embodiment 2

[0048] Weighing materials: 98% PC resin, 1% impact light diffuser, 0.4% antioxidant, 0.6% lubricant. Other steps are with embodiment 1.

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Abstract

The invention is applicable in the field of engineering plastics and provides a PC composite material, as well as a preparation method and application thereof. The PC composite material comprises polycarbonate and PMMA-PBA core-shell copolymer. According to the PC composite material provided by the invention, by virtue of the PMMA-PBA core-shell copolymer as light dispersion agent, the light dispersion effect and the toughness are improved. The PC composite material provided by the invention has a simple preparation method, is simple to operate, has a low cost and is very suitable for industrial production. Owing to the PMMA-PBA core-shell copolymer as light dispersion agent, the prepared PC composite material is excellent in light dispersion effect and toughening effect.

Description

technical field [0001] The invention belongs to the field of engineering plastics, and in particular relates to a PC composite material, its preparation method and application. Background technique [0002] In the process of LED lighting being gradually accepted by the market, the problem of lampshades has always troubled lamp manufacturers. It must have a high light transmittance as a prerequisite, and at the same time, it must have a considerable light diffusivity and good light source concealment. Initially, glass was used to produce lampshades. The problem with glass is that it is fragile, and the light diffusion effect is not very good, so it is difficult to meet the lighting requirements. Later, it gradually developed to use resin instead of glass. Adding a light diffusing agent with a different refractive index from the resin matrix to the transparent resin can achieve the effect of atomization due to the refraction of light at the interface. PC resin has good trans...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L33/12C08F220/14C08F220/18B29C47/92B29C48/92
CPCB29C48/92B29C48/875B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 徐东徐永都魁林
Owner ANHUI KEJU NEW MATERIALS
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