Polypropylene high-effect photo-diffusing master batch and preparation method thereof

Abstract

The invention provides a polypropylene high-effect photo-diffusing master batch and a preparation method thereof. The polypropylene high-effect photo-diffusing master batch includes the following components, by mass: 10-40 parts of homo-polypropylene, 10-40 parts of a photo-diffusing agent, 1-3 parts of a transparent modifier, 2-8 parts of a dispersing agent and 1-4 parts of a lubricant, and if necessary, 0.1-0.5 parts of an anti-oxidizing agent. The preparation method comprises the following steps: weighing the required raw materials according to mass part, fully stirring and mixing the raw materials, discharging the mixed material and cooling the mixed material, fully curing the mixed material, and crushing and sieving the mixed material to prepare the master batch. A propylene material product with addition of the polypropylene high-effect photo-diffusing master batch is high in light transmittance, is excellent in photo-diffusion, is low in cost, is excellent in mechanical performance, is uniform in light-transmitting distribution, and can be widely applied in high-precision LED components which require high light transmittance and high light-transmitting uniformity.

Description

technical field [0001] The invention relates to a polypropylene material and a preparation method thereof, in particular to a polypropylene high-efficiency light diffusion masterbatch and a preparation method thereof. Background technique [0002] At present, plastic light diffusing materials on the market are generally based on acrylic and polycarbonate modified materials, which have outstanding optical performance advantages, but due to the large specificity and high cost of the material, it is relatively uneconomical to use. Polypropylene material has the advantages of small specific gravity and low price. Through synchronous modification of light transmission and light diffusion properties, it becomes a cost-effective light diffusion material, especially suitable for indoors with LED as light source. Lamps, advertising light boxes, billboards, light source covers and other photoelectric display fields. [0003] Chinese invention patent CN201210519772 discloses a light-d...

AI Technical Summary

Problems solved by technology

However, this modified polypropylene material still has the problem of low mechanical properties of polypropylene, and the light transmission performance of the material is weak and uneven, so it can only be used in the production of LED lamps in the field of household lighting. Color LED screens with high light transmission requirements cannot meet their light transmission requirements; at the same time, the above-mentioned polypropylene materials still need to use high-temperature extrusion and granulation processes in the preparation process. The degradation of material properties caused by thermal degradation at high temperature, on the other hand, the repeated granulation of PP materials will also increase the cost