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Light diffusion master batch for transparent plastics and preparation method thereof

A light-diffusing masterbatch and transparent plastic technology, applied in the field of functional masterbatch, can solve problems such as difficult operation, volatile, explosive, etc., and achieve the effect of increasing the application range and excellent aging resistance

Active Publication Date: 2013-05-01
东莞市普凯塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the relative quality and manufacturing performance of the prepared light-diffusing masterbatches are still unstable, and they are mainly liquid chemical substances at room temperature. They have low boiling points, are volatile, flammable, explosive, and difficult to operate. Manufacturing with equipment

Method used

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  • Light diffusion master batch for transparent plastics and preparation method thereof
  • Light diffusion master batch for transparent plastics and preparation method thereof
  • Light diffusion master batch for transparent plastics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A light-diffusing masterbatch for transparent plastics, comprising the following raw materials calculated by weight percentage: cross-linked polymethyl methacrylate resin beads) 5%, pentaerythritol stearate 1%, (β[3-(3, 5-di-tert-butyl-4-hydroxyphenyl)]propionate 2.5%, 2-(2'-hydroxy-3',5'-bis[1,1-dimethylphenyl])-benzene Triazole 2.5%, polycarbonate 91%.

[0034] The average particle diameter of the organic microbeads is 1 μm; the average particle diameters of each organic microbeads are equal.

[0035] The method for preparing the light-diffusing masterbatch: First, weigh and mix the raw materials according to the above-mentioned ratio, and then put them into a parallel twin-screw extruder for melt extrusion, and the extruded product is cooled, pelletized and dried to obtain the obtained The light diffusion masterbatch.

[0036] A transparent polycarbonate plastic consisting of 6% light diffusing masterbatch and 94% polycarbonate by weight.

Embodiment 2

[0038] A light-diffusing masterbatch for transparent plastics, comprising the following raw materials calculated by weight percentage: 50% of spherical calcium carbonate particles, 8% of montan wax, β-(3,5-di-tert-butyl-4-hydroxybenzene base) stearyl propionate 7.5%, 2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-5-chlorobenzotriazole 7.5%, styrene-acrylonitrile copolymer 27%.

[0039] Preferably, the average particle diameter of the inorganic microbeads is 10 μm, and the average particle diameters of each inorganic microbead are equal.

[0040] The method for preparing the light-diffusing masterbatch: weigh the raw materials according to the above ratio and mix them uniformly, then put them into a reciprocating single-screw extruder for melt extrusion, and the extrudates are cooled, pelletized, and dried to obtain The light-diffusing masterbatch.

[0041] A transparent styrene-acrylonitrile plastic, composed of 4% light-diffusing masterbatch and 96% styrene-acrylonitrile copolym...

Embodiment 3

[0043] A light-diffusing masterbatch for transparent plastics, including the following raw materials calculated by weight percentage: 10% of light-diffusing agent (including 1% of cross-linked polymethyl methacrylate resin beads, cross-linked polymethyl methacrylate -1% styrene microbeads and 8% cross-linked polystyrene microbeads), 6% lubricating and dispersing agent (including 1% pentaerythritol stearate, 5% erucamide), tris(2,4- Di-tert-butylphenyl)phosphite 6.5%, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole 4.5%, base resin 96% (Among them, styrene-acrylonitrile copolymer 20% and polymethyl methacrylate resin 53%).

[0044] Preferably, the average particle diameter of the cross-linked polymethyl methacrylate resin microbeads and cross-linked polymethyl methacrylate-styrene microbeads is 1-10 μm, and the average particle diameter of each particle is different.

[0045]The method for preparing the light-diffusing masterbatch: weigh the raw materials accord...

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Abstract

The invention relates to the technical field of functional master batches, in particular to a light diffusion master batch for transparent plastics and a preparation method thereof. The light diffusion master batch comprises the following components in percentage by weight: 5-50% of light diffusant, 1-8% of lubrication dispersant, 2.5-7.5% of antioxidant, 2.5-7.5% of ultraviolet light absorber and 27-91% of matrix resin; after being mixed, the components are placed in an extruder for being molten and extruded; and the extruded materials are cooled, pelletized and dried to prepare the product of light diffusion master batch. The light diffusion master batch has stable properties, high transparency and high haze; and as the master batch contains a light stabilizing agent and a heat stabilizing agent with high concentrations, plastic products produced thereby have excellent ageing resistance, and are suitable for long-time use in locations of natural illumination or manual illumination.

Description

technical field [0001] The invention relates to the technical field of functional master batches, in particular to a light-diffusing master batch for transparent plastics and a preparation method thereof. Background technique [0002] One of the important components of LED light boxes, lamps or LED backlights is the light guide plate or diffuser cover, whose function is to improve the front brightness and brightness range, and make the light emitted by the point light source or line light source into a surface light source through diffuse reflection, so that the light The distribution of is more uniform, and the reflection point or the shadow of the light source point cannot be seen from the front. [0003] When the panel of the advertising light box or advertising signboard is made of ordinary transparent plastic, the light emitted is very dazzling because it has no astigmatism, which affects customers' attention to the content of the advertisement. The advertising light b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L33/12C08L67/00C08L25/12C08L83/04C08L25/06C08K13/04C08K7/18C08K7/20C08K3/36C08K3/30C08K3/26C08J3/22
Inventor 覃碧勋李卫
Owner 东莞市普凯塑料科技有限公司
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