Resin composition with Rayleigh scattering function and preparation method and application thereof

Abstract

The invention discloses a resin composition with a Rayleigh scattering function. The resin composition is prepared from the following raw materials: polycarbonate resin and a polycarbonate-polysiloxane copolymer. According to the invention, the characteristic of average size of siloxane nano structural domains embedded in polycarbonate-polyorganosiloxane copolymers is utilized, and the matching of two or more polycarbonate-polyorganosiloxane copolymers is adopted, so that the best combination between the haze and the light transmittance of the material is sought; commercialized large-scale production of the Rayleigh scattering diffusion plate is no longer an industrial pain point, and meanwhile, the overall scheme of the Rayleigh scattering sunlight lamp system is easier to realize.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a resin composition with Rayleigh scattering function and its preparation method and application. Background technique [0002] At present, studies have shown that people feel more comfortable in an indoor environment where sunlight enters, and sunlight exposure reduces people's work stress and negative effects, enhances their mood and work efficiency, and in the long run, improves the quality of living indoors. People's physical and mental health; however, some indoor places cannot let sunlight in, such as offices without natural ambient light, meeting rooms, underground shopping malls, etc. When there is no obvious view from the outside, these closed offices and rooms are easy to let in People feel depressed, so there are many reports about the Rayleigh scattering sunlight lamp system, which creates a virtual sun and diffuse blue sky effect through the sun...

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Problems solved by technology

[0002] At present, studies have shown that people feel more comfortable in an indoor environment where sunlight enters, and sunlight exposure reduces people's work stress and negative effects, enhances their mood and work efficiency, and in the long run, improves the quality of living indoors. People's physical and mental health; however, some indoor places cannot let sunlight in, such as offices without natural ambient light, meeting rooms, underground shopping malls, etc. When there is no obvious view from the outside, these closed offices and rooms are easy to let in People feel depressed, so there are many reports about the Rayleigh scattering sunlight lamp system, which creates a virtual sun and diffuse blue sky effect through the sunlight lamp system, creating a more comfortable working environment for people, such as the sunlight reported in patents CN111649271A, CN111623283A, and CN110778927A The lighting system can simulate the effect of the sun and diffuse the blue sky. In these lighting systems, the key material used is the Rayleigh scattering diffuser plate, but the preparation of the Rayleigh scattering diffuser plate is not described

[0003] In the published patents, the method of realizing Rayleigh scattering is to add inorganic nanomaterials to transparent polymers, such as: CN112876795A mentions that nano-scattering particles are selected from silicon dioxide, titanium dioxide, zinc oxide or other metal oxide particles At least one of the nano oxide particles described in CN112980125A includes silicon dioxide, titanium dioxide, zinc oxide, aluminum oxide, and CN105765415A describes that nanomaterials are made of inorganic materials, preferably selected from metal oxides, more preferably is selected from titanium dioxide, silicon dioxide, zinc oxide, zirconium dioxide, ferric oxide, aluminum oxide, Sb 2 SnO 5 , bismuth trioxide, and cerium oxide; in order to meet the requirements of Rayleigh scattering, the diameter of the particles must be much smaller than the wavelength of the incident wave, usually the upper limit is about 1 / 10 of the wavelength (1-300nm), the main and key The requirement is that the nanoparticles must be uniformly and randomly distributed within a transparent polymer matrix, but it has been shown in the open literature that this is very difficult to achieve, both in large-scale commercial production and in laboratory-scale experiments. Yes, because nanoparticles are always prone to aggregation during incorporation into the polymer matrix

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