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Automobile protective glass surface coating process

A surface coating and protective glass technology, applied in the direction of coating, etc., can solve the problems of poor low-temperature deformation resistance, thick thickness, and low strength of glass panels, achieve good market prospects, and increase the effect of bending protection strength

Inactive Publication Date: 2020-05-26
宜宾市雪富玻璃制品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current automotive protective glass has excellent mechanical properties, but there are still problems such as thicker thickness (about 4.7mm-5.1mm), poor low-temperature deformation resistance, and low strength of the glass panel; the mechanical properties of glass with a smaller thickness cannot meet the requirements. Requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A coating process for the surface of automobile protective glass provided in this embodiment comprises the following steps:

[0013] (1) To prepare boehmite sol, prepare aluminum nitrate nonahydrate into a 0.3mol / L solution, adjust its pH value to 9.4 with 26% ammonia water, stir in a constant temperature water bath for 1 hour, and obtain boehmite precipitation, and the boehmite precipitation After centrifuging and washing for 5 times, mix with deionized water, add 0.5mol / L nitric acid dropwise to adjust the pH value to 3.7, stir in a water bath at 60°C for 6 hours, and then keep the temperature in a water bath at 50°C for 12 hours to obtain transparent and stable boehmite Sol;

[0014] (2) Glass pretreatment, place the glass in deionized water, ultrasonically clean it for 22 minutes, and dry it for later use;

[0015] (3) Surface coating, using a desktop glue equalizer, using the spin coating method to coat the prepared boehmite sol on the pretreated clean glass surfa...

Embodiment 2

[0017] A coating process for the surface of automobile protective glass provided in this embodiment comprises the following steps:

[0018] (1) To prepare boehmite sol, prepare aluminum nitrate nonahydrate into a 0.3mol / L solution, adjust its pH value to 9.5 with 27% ammonia water, stir in a constant temperature water bath for 1 hour, and obtain boehmite precipitation, and precipitate boehmite After centrifuging and washing for 6 times, mix with deionized water, add 0.5mol / L nitric acid dropwise to adjust the pH value to 3.8, stir in a water bath at 60°C for 6 hours, and then keep the temperature in a water bath at 50°C for 12 hours to obtain transparent and stable boehmite Sol;

[0019] (2) Glass pretreatment, place the glass in deionized water, ultrasonically clean it for 25 minutes, and dry it for later use;

[0020] (3) Surface coating, using a desktop glue equalizer, using the spin coating method to coat the prepared boehmite sol on the pretreated clean glass surface, th...

Embodiment 3

[0022] A coating process for the surface of automobile protective glass provided in this embodiment comprises the following steps:

[0023] (1) Prepare boehmite sol, prepare aluminum nitrate nonahydrate into a 0.3mol / L solution, adjust its pH value to 9.6 with 28% ammonia water, stir in a constant temperature water bath for 1 hour, and obtain boehmite precipitation, and then precipitate boehmite After centrifuging and washing for 6 times, mix with deionized water, add 0.5mol / L nitric acid dropwise to adjust the pH value to 3.9, stir in a water bath at 60°C for 6 hours, and then keep the temperature in a water bath at 50°C for 12 hours to obtain transparent and stable boehmite Sol;

[0024] (2) Glass pretreatment, place the glass in deionized water, ultrasonically clean it for 28 minutes, and dry it for later use;

[0025] (3) Surface coating, using a desktop glue equalizer, using the spin coating method to coat the prepared boehmite sol on the pretreated clean glass surface, ...

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PUM

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Abstract

The invention particularly relates to a surface coating process for automobile protective glass. The surface coating process comprises the following steps: preparing boehmite sol; pretreating glass, namely putting the glass into deionized water, ultrasonically cleaning for 20-30 minutes, and drying for later use after cleaning; conducting surface coating, specifically, coating the surface of the pretreated clean glass with the prepared boehmite sol through a table type spin coater by a spin coating method while the technological parameters are set to be 3000 r / min and 30 S, and then conductingheat treatment for 10 min at the temperature of 500-700 DEG C; and returning to repeat the spin coating and heat treatment processes for 4-6 times, sintering for 6 hours at 500-700 DEG C by using a rapid heating resistance furnace at the heating rate of 3 DEG C / min. The anti-bending protective strength of the glass is improved through the coating process, and the process is very applicable to protective glass of automobiles and has a good market prospect.

Description

technical field [0001] The invention specifically relates to a coating process on the surface of an automobile protective glass. Background technique [0002] Protective glass is a special glass with certain resistance to various impacts or external forces, and is widely used in national defense, transportation, commerce and other fields. In recent years, there have been more and more cases of theft of domestic civilian vehicles due to damaged windows; police vehicles and some law enforcement vehicles have also been damaged in mass incidents, so the development of automotive protective glass is very necessary. Automotive protective glass must not only have excellent mechanical properties and performance, but also be light and thin. The current automotive protective glass has excellent mechanical properties, but there are still problems such as thicker thickness (about 4.7mm-5.1mm), poor low-temperature deformation resistance, and low strength of the glass panel; the mechani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/25
CPCC03C17/25C03C2217/214C03C2217/70C03C2218/116C03C2218/32
Inventor 李向东
Owner 宜宾市雪富玻璃制品有限责任公司