Supercharge Your Innovation With Domain-Expert AI Agents!

Glass sheet with gradient refractive indexes and preparation method of sheet

A gradient refractive index and glass flake technology, which is applied in the field of glass flakes and its preparation, can solve the problems of high cost and difficulty in wide application, and achieve the effects of low cost, improved luminous efficiency, and a wide range of refractive index control

Active Publication Date: 2013-10-02
武汉利之达科技股份有限公司
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the pyramid-shaped light-limiting structure needs to be made by laser slotting process, the cost is high and it is difficult to be widely used.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Glass sheet with gradient refractive indexes and preparation method of sheet
  • Glass sheet with gradient refractive indexes and preparation method of sheet
  • Glass sheet with gradient refractive indexes and preparation method of sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 2 As shown, the process of this example is:

[0035] 1) Select borosilicate glass sheet 1 with a thickness of 0.5mm (model Pyrex 7740, glass transition temperature 821℃, refractive index 1.48, light transmittance greater than 85%), ultrasonically cleaned with acetone solution, and dried for backup use;

[0036] 2) Weigh 60 grams of terpineol, add 1 gram of cellulose and 10 grams of nano-TiO 2 Particles (average particle size of 5nm), ultrasonically stirred at 70 ℃ into a mixed solution, and then add 100 grams of low-temperature glass powder (the main component is PbO-B 2 O 3 , The glass transition temperature is 650℃, and the refractive index is 1.45), mixed and stirred in a ball mill for 30 minutes to prepare a homogeneous glass slurry 3;

[0037] 3) Using the screen printing process, a layer of glass paste layer 3 with a thickness of 50um is uniformly coated on the surface of the glass substrate 1;

[0038] 4) Increasing nano TiO sequentially 2 The dosage is ...

Embodiment 2

[0040] 1) Select a borosilicate glass sheet with a thickness of 1.0mm (glass transition temperature of 640°C, refractive index of 1.40, and light transmittance greater than 80%), ultrasonically clean with acetone solution, and dry for use;

[0041] 2) Weigh 80 grams of polyvinyl alcohol, add 3 grams of fish oil and 5 grams of nano silicon powder (average particle size of 20nm), ultrasonically stir to form a solution at 70°C, and then add 100 grams of low temperature glass powder (the main component is B 2 O 3 +Al 2 O 3 +Na 2 O, the glass transition temperature is 450°C, and the refractive index is 1.40), mixed and stirred in a ball mill for 60 minutes to prepare a homogeneous glass slurry;

[0042] 3) Using a screen printing process to coat the surface of the glass substrate to form a glass paste layer with a thickness of 100um;

[0043] 4) Increase the content of nano silicon powder to 20 grams, and repeat the above steps 2) and 3);

[0044] 5) Place the coated glass substrate in a hi...

Embodiment 3

[0046] 1) Choose a borosilicate glass sheet with a thickness of 0.3mm (glass transition temperature of 780°C, refractive index of 1.60, and light transmittance greater than 90%), ultrasonically clean with acetone solution, and dry for use;

[0047] 2) Weigh 100 grams of carboxymethyl cellulose, add 5 grams of methyl pentanol and 10 grams of nano-TiO 2 (Average particle size is 40nm), ultrasonically stirred at 60℃ to form a solution, and then add 100 grams of boroaluminate glass powder (the main component is B 2 O 3 +Al 2 O 3 +Na 2 O, the glass transition temperature is 500°C, and the refractive index is 1.56), mix and stir in a ball mill for 60 minutes to prepare a homogeneous glass slurry;

[0048] 3) Using a screen printing process to coat a glass paste layer with a performance thickness of 80um on the surface of the glass substrate;

[0049] 4) Increasing nano TiO sequentially 2 The dosage is 40 grams and 70 grams, repeat the above steps 2) and 3);

[0050] 5) Put the coated glass s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a glass sheet with gradient refractive indexes and a preparation method of the sheet. The glass sheet consists of a glass substrate and multiple layers of glass membranes on the surface of the glass substrate, wherein the refractive index of a material of the glass membrane at the innermost layer is equal to or greater than that of a material of the glass substrate, and the refractive indexes of materials of the glass membrane layers are increased layer by layer from inside to outside. The preparation method adopts a screen printing process, multiple glass slurry layers containing nanoparticles with high refractive indexes are coated on the surface of the glass substrate (the mixing amount of the nanoparticles is changed layer by layer), main ingredients of slurry include low-temperature glass powder, the nanoparticles with high refractive indexes, an adhesive, a dispersant and the like, the glass substrate coated with multiple layers of slurry is sintered, and the glass sheet with gradient refractive indexes is obtained through a temperature control sintering process. The glass sheet is wide in refractive index regulation and control range (delta n is greater than or equal to 0.1), simple in structure and process, and suitable for large-scale production.

Description

Technical field [0001] The invention belongs to glass preparation technology, and in particular relates to a glass sheet with a larger refractive index gradient and a preparation method thereof. Background technique [0002] Glass has the advantages of stable physical and chemical properties (strong heat and humidity resistance), high transparency, and simple preparation process, making it an ideal optical material. However, for the packaging of optoelectronic devices (such as photovoltaic modules, LED devices, etc.), due to the effect of total reflection, it is difficult to meet the packaging requirements by using a single refractive index glass (a homogeneous material with a constant refractive index everywhere in the material). Studies have found that the use of gradient index glass (a non-homogeneous material whose composition and structure change continuously within the material according to a certain rule, so that the refractive index changes continuously) can help improve ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/04
Inventor 陈明祥
Owner 武汉利之达科技股份有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com