The invention provides a foaming light
diffusion plate and a preparation method and application thereof, and particularly relates to the technical field of light
diffusion plates. The foaming light
diffusion plate comprises an upper layer, a middle layer and a lower layer which are arranged in a stacked mode, and every two adjacent
layers are different in structure. The upper layer is provided with a large foam structure, a small foam structure or a
solid structure; the middle layer is provided with a large foam hole structure and / or a small foam hole structure; and the lower layer has a large foam structure, a small foam structure or a
solid structure. According to the foaming light diffusion plate, a differentially designed foam
system is introduced into a three-layer structure, so that optical performance matching of high light
transmittance, high
haze and high brightness uniformity is realized. Large bubbles are used as light channels to reduce
light scattering loss so as to improve the light
transmittance, and meanwhile, small bubbles are used for enhancing the
light scattering capacity so as to improve the
haze and the light uniformizing effect. According to the invention, the density is as low as 0.70-0.85 g / cm < 3 >, the lightweight effect is obvious, the uniformity is greater than or equal to 84.2%, the material has good mechanical properties and
heat resistance, and the material cost and the
transportation energy consumption are reduced.