Barium sulfate for light diffusion, and preparation method and application thereof

By controlling reaction conditions and using a crystallization agent to prepare near-cubic barium sulfate, the problem of insufficient light diffusion performance of existing barium sulfate was solved, and the optical performance of the light diffusion film was improved.

CN117886349BActive Publication Date: 2026-06-16ZHUSHAN COUNTY QINBA BARIUMSALT CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHUSHAN COUNTY QINBA BARIUMSALT CO LTD
Filing Date
2023-12-27
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

The existing shape and structure of barium sulfate are not suitable as a light diffusing agent, and it cannot effectively scatter light. Furthermore, its purity and particle size distribution are uneven, which affects its optical performance.

Method used

Near-cubic barium sulfate was prepared by controlling reaction temperature, stirring speed, type and concentration of crystallizing agent, etc. Water-soluble polymer cellulose or silane coupling agent was used as crystallizing agent to control crystal growth and improve purity and particle size uniformity.

Benefits of technology

The prepared near-cubic barium sulfate exhibits excellent light diffusion properties, which improves the optical performance of the light diffusion film, simplifies the preparation process, and reduces production costs.

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Abstract

The application provides barium sulfate for light diffusion and a preparation method and application thereof, and relates to the field of inorganic micron and submicron material synthesis, and comprises the following steps: S1, mixing a crystal transfer agent with deionized water to configure a reaction bottom water; S2, simultaneously and at the same speed, feeding a barium chloride solution and a sulfuric acid solution into the reaction bottom water, controlling the reaction temperature to be 20-80 DEG C, and stirring to obtain a mixture; S3, standing the mixture, filtering and separating to obtain a precipitate, and sequentially performing beating treatment and drying treatment on the precipitate to obtain the barium sulfate. According to the technical scheme, the barium sulfate for light diffusion can be prepared, the barium sulfate has controllable morphology, relatively narrow particle size distribution, uniform particle size, and good light diffusion performance, and the prepared barium sulfate is applied to a light diffusion film, so that the optical performance of the light diffusion film can be greatly improved.
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Citation Information

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