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A kind of polycarbonate material with high reflection and low light transmission and preparation method thereof

A polycarbonate, high-reflection technology, applied in the field of polymer modified materials, can solve problems such as light reflection that have not been studied, and achieve excellent reflection and shading effects, light transmittance reduction, and excellent light reflectance effects

Active Publication Date: 2020-12-18
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent application No. 201010224699.1 is limited to LED lamp shades, and only discusses the light transmission performance, does not study the reflection of light, and uses the traditional extrusion granulation processing method to deal with the problem
At the same time, the prior art only discloses the light-shielding explanation of thicker products (for example, the invention patent of Chinese patent application number 201310267948.9 is a light-shielding material with a thickness of 2 millimeters, and the invention patent with a Chinese patent application number of 201310449220.8 is the thinnest light-shielding material with a thickness of 1 millimeter. )

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 70 parts of PC2407, 5 parts of M511, 10 parts of superfine barium sulfate and fine calcium carbonate mixture (weight ratio = 2:1), 10 parts of R-760, 2 parts of heat stabilizer, 2 parts of light stabilizer (LA -944 1.2 parts, UV-360 0.8 parts), 1 part of lubricant, mixed evenly by high-speed stirring, the above-mentioned mixture is sent into the internal mixer, fully melted and mixed under the stirring and shearing action of the rotor, and then pressed The film machine is pressed into 2 mm thin slices, and then cut into pellets with a cutter.

[0048] The internal mixer temperature is 240° C., and the internal mixer rotor speed is 75 rpm.

[0049] The prepared material was injection molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 2.

Embodiment 2

[0055] 75.8 parts of PC2407, 10 parts of M511, 3 parts of superfine barium sulfate and fine calcium carbonate mixture (the weight ratio of the two = 2:1), 10 parts of R-760, 0.5 parts of heat stabilizer, 0.5 parts of light stabilizer (LA -944 0.3 parts, UV-360 0.2 parts), 0.2 parts of lubricant, mixed evenly by high-speed stirring, the above-mentioned mixture was sent into the internal mixer, fully melted and mixed under the stirring and shearing action of the rotor, and then pressed The film machine is pressed into 2 mm thin slices, and then cut into pellets with a cutter.

[0056] The internal mixer temperature is 280° C., and the internal mixer rotor speed is 75 rpm.

[0057] The prepared material was injection molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 3.

Embodiment 3

[0063] 76.8 parts of PC2407, 10 parts of M511, 10 parts of ultra-fine barium sulfate, 2 parts of R-760, 0.5 parts of heat stabilizer, 0.5 parts of light stabilizer (LA-944 0.3 parts, UV-360 0.2 parts), lubricant 0.2 The parts are mixed evenly by high-speed stirring, and the above-mentioned mixture is sent into the internal mixer, fully melted and mixed under the stirring and shearing action of the rotor, and then pressed into 2mm thin slices by a film press, and then cut into granules with a cutter. material.

[0064] The temperature of the internal mixer is 260° C., and the rotational speed of the rotor of the internal mixer is 75 rpm.

[0065] The prepared material was injection molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 4.

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Abstract

The invention belongs to the technical field of polymer modified materials, and relates to a polycarbonate modified material with high reflection and low light transmittance and a preparation method thereof. The material is made of the following components by weight: 70-76.8 parts of polycarbonate, 5-10 parts of toughening agent, 3-10 parts of light diffusing agent, 2-10 parts of light blocking agent, 0.5 parts of heat stabilizer ~2 parts, 0.5~2 parts of light stabilizer, 0.2~1 part of lubricant, mixed evenly, sent to the internal mixer for extrusion and mixing, then pressed into 1-5mm thin slices with a film press, and then cut into pieces with a cutter pellets. The material components have good dispersion effect and uniform phase, and have excellent light reflectivity and low light transmittance in thinner parts, and are suitable for optical components in lighting, display, automobile, aviation and other fields.

Description

[0001] (1) Technical field [0002] The invention belongs to the technical field of polymer modified materials, and in particular relates to a polycarbonate material with the advantages of high light reflectance, low light transmittance and the like and a preparation method thereof. [0003] (2) Background technology [0004] Polycarbonate (PC for short) is a transparent, amorphous thermoplastic material containing carbonate groups in its molecular chain. Polycarbonate has excellent impact resistance, good mechanical properties and electrical insulation, wide temperature range, good temperature resistance, high dimensional stability and high creep resistance. It is a rigid, hard and tough engineering plastic. Typical materials in one. But also because of its poor crystallization ability, it is an amorphous polymer, so it has excellent transparency. [0005] Due to the increasingly high requirements for light in optical products with high added value such as instrument lampsha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L51/04C08K13/02C08K3/30C08K3/26C08K5/20
CPCC08K2201/005C08L69/00C08L51/04C08K13/02C08K2003/3045C08K2003/265C08K5/20
Inventor 杨桂生高军杨莺李术
Owner HEFEI GENIUS NEW MATERIALS
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