Volume scattering polymer light conducting plate and preparation method for injection mould master batch

A technology of polymers and light guide plates, applied in optics, light guides, optical components, etc., can solve the problems affecting the uniformity of light scattering, complex preparation process, and unsatisfactory, and achieve excellent performance and simple preparation methods.

Inactive Publication Date: 2009-02-18
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the existing technology of preparing volume-scattering polymer light-guiding materials, there are the following deficiencies: the particles in the preparation materials are agglomerated, which affects the uniformity of light scattering; the range of applications is small, and it cannot be used in high-end products such as liquid crystal display backlights. requirements; the preparation process is complicated and the cycle is long; precision injection molding cannot be carried out, and only traditional pouring molding methods can be used, which cannot meet the technical requirements for preparing precision optical devices

Method used

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  • Volume scattering polymer light conducting plate and preparation method for injection mould master batch
  • Volume scattering polymer light conducting plate and preparation method for injection mould master batch
  • Volume scattering polymer light conducting plate and preparation method for injection mould master batch

Examples

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Embodiment 1

[0032] Preparation of injection molding masterbatch, the organic matrix material is polymethyl methacrylate, and the inorganic scattering particles are SiO 2 , whose particle size is 0.1 μm; comprising the following steps:

[0033] (a) Under the action of ultrasonic stirring environment (ultrasonic power is 1200W, frequency is 30KHZ), carry out surface treatment to inorganic body scattering particles with absolute ethanol, coupling agent MPS and dibutyl phthalate for 20 minutes; inorganic body The mass ratio of scattering particles to absolute ethanol, coupling agent MPS and dibutyl phthalate is 1:0.25:0.005:0.05;

[0034] (b) mixing the treated inorganic scattering particles and the organic matrix material, and mechanically stirring the mixed material to uniformly mix the inorganic scattering particles and the organic matrix material; the inorganic scattering particles account for 20% by weight in the mixed material;

[0035] (c) Extrude, mix, wire-draw and pelletize the mix...

Embodiment 2

[0037] Preparation of injection molding masterbatch, the organic matrix material is polymethyl methacrylate, and the inorganic scattering particles are TiO 2 , whose particle size is 1 μm; comprising the following steps:

[0038] (a) Under the action of ultrasonic stirring environment (ultrasonic power is 800W, frequency is 20KHZ), carry out surface treatment on inorganic body scattering particles with absolute ethanol, coupling agent MPS and dibutyl phthalate for 100 minutes; inorganic body The mass ratio of scattering particles to absolute ethanol, coupling agent MPS and dibutyl phthalate is 1:0.1:0.0005:0.005;

[0039] (b) mixing the treated inorganic scattering particles and the organic matrix material, and mechanically stirring the mixed material to uniformly mix the inorganic scattering particles and the organic matrix material; the inorganic scattering particles account for 10% by weight in the mixed material;

[0040] (c) Extrude, mix, wire-draw and pelletize the mixe...

Embodiment 3

[0042] Preparation of injection molding masterbatch, the organic matrix material is polymethyl methacrylate, and the inorganic scattering particles are ZrO 2 , whose particle size is 10 μm; comprising the following steps:

[0043] (a) Under the action of ultrasonic stirring environment (ultrasonic power is 2000W, frequency is 40KHZ), carry out surface treatment on inorganic body scattering particles with absolute ethanol, coupling agent MPS and dibutyl phthalate for 10 minutes; inorganic body The mass ratio of scattering particles to absolute ethanol, coupling agent MPS and dibutyl phthalate is 1:0.005:0.001:0.03;

[0044] (b) mixing the treated inorganic scattering particles and the organic matrix material, and mechanically stirring the mixed material to uniformly mix the inorganic scattering particles and the organic matrix material; the inorganic scattering particles account for 5% by weight in the mixed material;

[0045] (c) Extrude, mix, wire-draw and pelletize the mixe...

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Abstract

The invention discloses a volume scattering polymer light-guide plate and a method for preparing the injection moulding parent-material thereof. Injection moulding is adopted, the raw materials include organic host materials, inorganic volume scattering particles, coupling agent MPS, anhydrous alcohol and dibutyl phthalate; the inorganic volume scattering particles are SiO2, ZrO2, Al2O3, TiO2 or ZnO, the particle sizes is between 0.1-10 Mum; the organic host materials are poly(methyl methacrylate), polycarbonate or cycloolefin polymers. The process for preparing the injection moulding parent-material of the volume scattering polymer light-guide plate is simple, the batching is easy, and volume scattering polymer light-guide plate can be prepared on a precise injection moulding machine under common injection moulding condition. The volume scattering polymer light-guide plate is fabricated by injection moulding, the preparation method is simple and reliable. The light-guide plate prepared by the method has sound performance, can not only be applied to LED street lamp with relatively low technical requirement, but also applied to LCD screen with very high technical requirement.

Description

technical field [0001] The present invention relates to the preparation method of the injection molding masterbatch of the volume scattering polymer light guide plate, and the invention also relates to the preparation method of the volume scattering polymer light guide plate, especially relates to the preparation for the mobile phone, notebook computer, digital camera, digital video camera, PDA The invention relates to a preparation method of a volume scattering polymer light guide plate for a backlight source of a liquid crystal display such as an instrument panel. Background technique [0002] Japanese patent JP04 59,854 discloses a preparation method of acrylic resin light-diffusing paper. The preparation method is to add inorganic particle scatterers with a certain particle size distribution (such as oxidation zinc, calcium carbonate, zeolites, etc.). [0003] Japanese patents JP01 315,466 and JP03 58,084 disclose two methods for preparing high polymer light-diffusing m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/22C08L33/12C08L69/00C08L45/00C08K9/06G02B6/00G02F1/13357B29B7/00B29B9/06B29K33/04B29K69/00B29K45/00B29K105/32G02F1/1335
Inventor 叶勤栗万里唐振方
Owner JINAN UNIVERSITY
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