Light-transmitting inorganic light diffusion agent and preparation method thereof

A light-diffusing agent and inorganic technology, applied in the field of light-diffusing materials, can solve the problems of inorganic light-diffusing agents being opaque, and achieve the effects of high sphericity, good haze, and good flow dispersion

Inactive Publication Date: 2014-09-24
江门市金德丰塑业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the core-shell structure is to solve the compatibility of the inorganic light diffusing agent, and make up for the defects of t

Method used

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  • Light-transmitting inorganic light diffusion agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1) Purify 85% cryolite by calcining at 700-800°C for 0.5 hours, then mix it with lye to make a slurry, perform high-speed ball milling on the slurry for 1 hour, wash with water until neutral, filter, and dry for backup use;

[0036] 2) Melt 8% pyrophyllite, 5% kaolin, 1% potassium feldspar, and 1% brucite at a temperature of 1200°C, then pulverize and grind to obtain a fine powder with a fineness of 3000-6000 mesh;

[0037] 3) Mix the fine powder obtained in step 2) with deionized water to make a slurry. In the fluidized bed, distribute the purified cryolite powder obtained in step 1) on the vibrating plate. While vibrating, the slurry is blown by the airflow It enters the bed from the lower part, and as the air velocity increases, the cryolite powder on the vibrating plate boils, is covered by the slurry, and dried at a drying temperature of 80-90°C;

[0038]4) Calcinate the dry coating material obtained in step 3) in a dynamic powder calciner at 800-950°C for 2 hours...

Embodiment 2

[0041] 1) Purify 88% cryolite by calcining at 700-800°C for 1 hour, and then mix it with lye to make a slurry. The slurry is subjected to high-speed ball milling for 1.5 hours, washed with water until neutral, filtered, and dried for backup use;

[0042] 2) Melting 6% pyrophyllite, 5% kaolin, 0.5% potassium feldspar, and 0.5% brucite at a temperature of 1300°C, then crushing and grinding to obtain a fine powder with a fineness of 3000-6000 mesh;

[0043] 3) Mix the fine powder obtained in step 2) with deionized water to make a slurry. In the fluidized bed, distribute the purified cryolite powder obtained in step 1) on the vibrating plate. While vibrating, the slurry is blown by the airflow It enters the bed from the lower part, and as the air velocity increases, the cryolite powder on the vibrating plate boils, is covered by the slurry, and dried at a drying temperature of 80-90°C;

[0044] 4) Calcinate the dry coating material obtained in step 3) in a dynamic powder calciner...

Embodiment 3

[0047] 1) Purify 90% cryolite by calcining at 700-800°C for 0.8 hours, and then mix it with lye to make a slurry. The slurry is subjected to high-speed ball milling for 1.5 hours, washed with water until neutral, filtered, and dried for backup use;

[0048] 2) Melting 5% pyrophyllite, 3% kaolin, 1% potassium feldspar, and 1% brucite at a temperature of 1200°C to 1300°C, and then crushing and grinding to obtain a fineness of 3000-6000 mesh pink;

[0049] 3) Mix the fine powder obtained in step 2) with deionized water to make a slurry. In the fluidized bed, distribute the purified cryolite powder obtained in step 1) on the vibrating plate. While vibrating, the slurry is blown by the airflow It enters the bed from the lower part, and as the air velocity increases, the cryolite powder on the vibrating plate boils, is covered by the slurry, and dried at a drying temperature of 80-90°C;

[0050] 4) Calcinate the dry coating material obtained in step 3) in a dynamic powder calciner...

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Abstract

The invention discloses a light-transmitting inorganic light diffusion agent which is characterized by comprising the following components by weight percent: 85%-94% of cryolite, 3%-8% of pyrophyllite, 2%-5% of kaolin, 0.5%-1% of potassium feldspar and 0.2%-1% of brucite. A fluidized bed is coated with cryolite, a powdery material is mixed with heated hot air in a rotational-flow dynamic calcining furnace, the specific surface of the cryolite is instantly calcined and molten and is spheroidized, and the surface of cryolite is covered with a reflection layer, so that cryolite has good light transmitting and reflectivity. The light diffusion agent is high in micro-particle sphericity and good in flowing dispersity, can be used at a high temperature of 800 DEG C or above, has excellent high temperature resistance, has a reflectivity different from most transparent resins, can be uniformly dispersed in resin so that a point light source is changed into an area light source, light transmitting and dodging effects are achieved, and therefore high light transmittance is ensured and good haze is achieved.

Description

technical field [0001] The invention relates to the field of light-diffusing materials, in particular to an inorganic light-diffusing agent, and further relates to an inorganic light-diffusing agent with excellent light transmission performance and a preparation method thereof. Background technique [0002] With the development of lighting energy-saving technology, LED lights have been developed rapidly. LED lights, also known as light-emitting diodes, can be used for various types of lighting, and have the characteristics of low energy consumption and high brightness. But because LED is a point light source, the light is strong and dazzling, so the LED lampshade is very important for the diffusion of point light source. The previous lampshades were mainly made of PC, PMMA, PS or other types of transparent plastic with shading pigments added to soften the light. However, due to the influence of shading, the brightness has dropped a lot, resulting in a waste of light source...

Claims

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Application Information

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IPC IPC(8): C08K9/00C08K9/04C08K9/10C08K3/24C08K3/22C08K3/36C08K3/34C09C1/40C09C3/06
Inventor 陈庆曾军堂
Owner 江门市金德丰塑业科技有限公司
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