Master batch with light scattering function, and preparation method and application thereof

Abstract

The invention discloses a master batch with a light scattering function, and a preparation method and application thereof. The master batch with a light scattering function comprises 20-99.5% of transparent thermoplastic resin, 0.1-40% of small-particle-size light scattering agent, 0.1-10% of large-particle-size light scattering agent, 0.01-10% of antioxidant and 0.01-20% of light stabilizer. By compounding the light scattering agents with two particle sizes, the optical properties of the light scattering material can be obviously enhanced. Under the condition of the same content of light scattering agent, since the light scattering agents with two particle sizes are compounded, the light scattering material not only can achieve the same light scattering effect, but also has better light transmittance. The light scattering agents, antioxidant, light stabilizer and other functional assistants are mixed with the matrix resin to prepare the functional master batch, so that the concentration of the assistants in the master batch is increased; and the functional master batch is blended with the matrix resin to prepare the light scattering material. The invention has the advantages of low consumption of light scattering agents, uniform distribution, excellent optical properties, fewer surface defects, lower cost and the like. The master batch with a light scattering function is suitable for producing high-quality optical components, lamp shells, diffuser plates in backlight modules, advertisement signboards, display windows and the like.

Description

technical field [0001] The invention relates to the field of a functional masterbatch, in particular to a light-scattering functional masterbatch. Background technique [0002] Light-scattering materials refer to materials that can pass light and effectively scatter light. It can convert point and line light sources into line and surface light sources, making the light source bright but not dazzling, and the light is soft and comfortable. It can be used as a surface light source material. Instruction signs, advertising signs, display windows, projection back walls, and wall-mounted uniform lighting sources can also be used as backlight materials for liquid crystal displays, and can also be combined with liquid crystal elements to prepare polymer dispersed scattering elements. [0003] The prior art has disclosed a method for preparing a light-scattering material by adding a light-scattering agent to a transparent resin matrix, as well as molding parts made of the light-scatt...

AI Technical Summary

Problems solved by technology

[0022] Based on the existing technology combined with our experimental research, it can be seen that since the amount of light-scattering agent added in the light-scattering material is small and it is easy to fly, and at the same time, no dispersant can be added to the transparent matrix (so as not to affect the optical performance), so the above-mentioned patented method is used to make the transparent matrix The method of directly adding a small amount of light-scattering agent in the medium may easily lead to a poor production site environment, and at the same time, the light-scattering agent is easy to disperse unevenly, forming agglomerates or surface defects in the material, thereby affecting the optical properties of the light-scattering material, etc.

In addition, since the amount of additives such as antioxidants, light stabilizers and antistatic agents is also small, the method of direct addition will also cause fluctuations in the performance of light scattering materials.