Line-following code spraying backlight source

A backlight and coding technology, applied in the field of backlight, can solve the problems of reducing the processing performance of polycarbonate, not easy to injection molding, etc.

Active Publication Date: 2022-06-28
DONGGUAN PINGYANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing plastic frame generally adopts polycarbonate with 10% glass fiber content, which has low glass fiber content and high stre...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An on-line coding backlight includes a high-strength plastic frame and an optical assembly, and the high-strength plastic frame is prepared by the following steps:

[0023] (1) Preparation of fiber assembly: take organic solvent, diisocyanate and carbon nanofibers in a mass ratio of 10:1.5:1, stir and mix, and then add polycarbonate diol with a molar ratio of 0.8:1 to diisocyanate, And add a catalyst with a mass percentage of 0.05% of the organic solvent, heat it up to 80 ° C, keep the reaction for 2.5 hours, then add a small molecule chain extender with a mass percentage of 0.35% of the organic solvent, react at 65 ° C for 30 minutes, add an organic solvent 2 times the mass of deionized water is emulsified, the organic solvent is evaporated and removed, after adding glass fibers of 10 times the mass of carbon nanofibers to stir and disperse, filter, wash and dry to obtain a fiber assembly;

[0024] (2) Granulation: prepare materials according to the following mass perc...

Embodiment 2

[0036] An on-line coding backlight includes a high-strength plastic frame and an optical assembly, and the high-strength plastic frame is prepared by the following steps:

[0037](1) Preparation of fiber assembly: take organic solvent, diisocyanate and carbon nanofibers in a mass ratio of 10:1:0.5, stir and mix, and then add polycarbonate diol with a molar ratio of 0.7:1 to diisocyanate, And add a catalyst with a mass percentage of 0.01% of the organic solvent, heat up to 75 ° C, keep the reaction for 2 hours, then add a small molecule chain extender with a mass percentage of 0.2% of the organic solvent, and react at 50 ° C for 20min, add the organic solvent 1 Emulsify with twice the mass of deionized water, evaporate the organic solvent, add glass fibers with 9 times the mass of carbon nanofibers, stir and disperse, filter, wash and dry to obtain the fiber assembly;

[0038] (2) Granulation: prepare materials according to the following mass percentages: polycarbonate 73.5%, f...

Embodiment 3

[0050] An on-line coding backlight includes a high-strength plastic frame and an optical assembly, and the high-strength plastic frame is prepared by the following steps:

[0051] (1) Preparation of fiber assembly: take organic solvent, diisocyanate and carbon nanofibers in a mass ratio of 10:2:1.5, stir and mix, and then add polycarbonate diol with a molar ratio of 0.9:1 to diisocyanate, And add a catalyst with a mass percentage of 0.1% of the organic solvent, heat up to 85 ° C, keep the reaction for 3 hours, then add a small molecule chain extender with a mass percentage of 0.5% of the organic solvent, react at 80 ° C for 40 min, add an organic solvent 3 Emulsify with twice the mass of deionized water, evaporate the organic solvent, add glass fibers with 11 times the mass of carbon nanofibers, stir and disperse, filter, wash and dry to obtain the fiber assembly;

[0052] (2) Granulation: prepare materials according to the following mass percentages: polycarbonate 82%, fiber ...

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Abstract

The invention relates to the technical field of backlight sources, in particular to a line-following code spraying backlight source which comprises a high-strength rubber frame and an optical component, the high-strength rubber frame is prepared through the following steps: (1) preparation of a fiber assembly: mixing an organic solvent, diisocyanate and carbon nanofibers, adding polycarbonate diol and a catalyst for reaction, and obtaining the fiber assembly; then adding a chain extender for continuous reaction, emulsifying, evaporating the solvent, adding glass fiber, filtering, washing and drying; (2) granulating; and (3) forming. According to the invention, the coated and modified carbon nanofibers are dispersed among the glass fibers in a liquid phase mixing manner, the surface polyurethane of the coated and modified carbon nanofibers is used as an elastomer to play a lubricating role, and the fluidity of the glass fibers is improved, so that the dispersity of the glass fibers in polycarbonate is improved; and compared with direct blending addition, the mechanical property of the blend can be more remarkably improved, and the use requirement of the backlight source rubber frame is met.

Description

technical field [0001] The invention relates to the technical field of backlight sources, in particular to a line-spray code backlight source. Background technique [0002] The backlight source is mainly composed of light source, light guide plate, optical modules and other optical components and structural parts. The structural parts include: backplane (iron backplane, aluminum backplane, plastic backplane), plastic frame, lamp holder, aluminum Profiles, aluminum base strips, of which the back plate and the plastic frame are necessary parts, and other structural parts are not completely used. Therefore, the production line of the backlight includes multiple processes such as light guide plate installation, PBC installation, functional film lamination, and coding. To achieve continuous automatic production, the plastic frame needs to be transferred. The plastic frame is flipped and dropped, and considering the use requirements, this requires the plastic frame of the backlig...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L75/04C08K9/10C08K9/04C08K7/06C08K7/14
CPCC08L69/00C08L75/04C08K9/10C08K9/04C08K7/06C08K7/14
Inventor 周剑平
Owner DONGGUAN PINGYANG ELECTRONICS CO LTD
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