Production process of continuous modified polystyrene light guide plate and modified polystyrene light guide plate

Abstract

The invention provides continuous modified polystyrene light guide plate production technology, and a modified polystyrene light guide plate, and belongs to the technical field of light guide plate. The continuous modified polystyrene light guide plate production technology comprises following steps: styrene monomer and methyl methacrylate monomer are subjected to binary copolymerization so as toobtain a modified polystyrene melt; the modified polystyrene melt is introduced into a sheet material moulding system through thermal insulation conveying, and is prepared into the modified polystyrene light guide plate using the sheet material moulding system. In the prior art, the polystyrene light guide plate is prepared via heating melting plasticizing of polystyrene master batch with a lightguide powder, crystal points and partially carbonized polystyrene are left on the obtained polystyrene light guide plate because of existing of unreacted materials on the polystyrene light guide plate, and technical problems in the prior art that light penetration is uniform, light transmittance is low, plate surface yellow light is generated are solved. The modified polystyrene light guide plateis uniform in light penetration, high in light transmittance, low in water absorption rate, and high in size stability; no yellow light is generated; and the image quality and sharpness of liquid crystal display devices can be ensured.

Description

technical field [0001] The invention relates to the technical field of light guide plate production technology, in particular to a continuous modified polystyrene light guide plate production process and the modified polystyrene light guide plate. Background technique [0002] As the industrial society develops into a highly information-based society, the importance of electronic display devices as a medium for displaying and transmitting various information is increasing. In particular, liquid crystal display devices combined with liquid crystal and semiconductor technology are widely used in various fields, but the liquid crystal itself of this liquid crystal display device cannot emit light. It is necessary to install a light source behind the device, and convert the line light source into a surface light source through a light guide plate. , so that the device can emit light uniformly to achieve the effect of display. [0003] Most of the traditional light guide plates ...

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Problems solved by technology

[0003] Most of the traditional light guide plates are made of polymethyl methacrylate. However, due to the special chemical structure of polymethyl methacrylate, it is very fragile to moisture. Dimensional stability is poor, prone to bending, affecting the display effect of liquid crystal display devices

[0004] Now someone has developed a polystyrene light guide plate, but the light transmittance of the polystyrene light guide plate is low. In order to improve the light transmittance of the polystyrene light guide plate, it is necessary to mix the light guide powder with the polystyrene masterbatch and melt it. Then prepare the polystyrene light guide plate, but the polystyrene masterbatch is difficult to plasticize and melt evenly during the processing process, and part of the polystyrene will be carbonized during the plasticization process, so that there are not only traces of untreated polystyrene on the polystyrene light guide plate. Crystal points formed by fully plasticized rigid materials, and due to the existence of partially carbonized polystyrene, the surface of the board is yellowed, resulting in uneven light emission and poor light transmittance, which cannot guarantee the image quality and clarity of liquid crystal display devices.

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