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Autombobile windshield glass possessing infrared reflection performance and its preparation method

A windshield and infrared reflection technology, applied to windshields, vehicle parts, windows, etc., can solve the problem of low transmittance of visible light and achieve the effect of ensuring clarity and ease of use

Inactive Publication Date: 2004-12-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the visible light transmittance of the glass prepared by these methods is very low, which is lower than the national requirement that the visible light transmittance of the automobile windshield be greater than 70%, so it is not suitable for the automobile windshield

Method used

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  • Autombobile windshield glass possessing infrared reflection performance and its preparation method
  • Autombobile windshield glass possessing infrared reflection performance and its preparation method
  • Autombobile windshield glass possessing infrared reflection performance and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Using an indium tin oxide ceramic target containing 10% tin oxide as a raw material, a magnetron sputtering method is used to deposit an indium tin oxide film on the inner surface of a 3 mm thick hot-bending glass as the outer glass, and the sputtering process is the working Air pressure 1.5Pa, background vacuum 3.0×10 -3 Pa, the voltage is 350V. The frequency of the medium frequency AC arc suppression power supply is 60KHz, and the glass temperature is 350°C. A 350 nm thick indium tin oxide film was deposited. Then it is packaged together with 0.8mm thick PVB film and 4mm thick hot bending glass as figure 2 A car windshield of the structure shown. Install the car windshield on a car. Under the condition of the outside temperature of 35°C, the car is parked still in a place directly exposed to the sun. After turning off the power for 1 hour, the temperature inside the car with the ordinary car windshield installed reaches 67°C. And the car interior temperature that...

Embodiment 2

[0023] Use a zinc-aluminum oxide ceramic target material containing 2.0% aluminum oxide to deposit a zinc-aluminum oxide film on one side of a 0.8mm thick PVB film by sputtering. The sputtering process is a working pressure of 2.0Pa and a background vacuum of 0.8×10 -3 Pa, the voltage is 350V. The frequency of the intermediate frequency AC arc suppression power supply is 25KHz, and the PVB film is at room temperature. A zinc-aluminum oxide film with a thickness of 350 nm was deposited. Then it is packaged together with 3mm thick hot bending glass (outer layer) and 4mm thick hot bending glass (inner layer) as figure 2 A car windshield of the structure shown. Install the car windshield glass on a car. Under the condition of the outside temperature of 35°C, the car is parked still in a place directly exposed to the sun. After turning off the power for 2 hours, the temperature inside the car with the ordinary car windshield glass installed reaches 67°C. And the car interior te...

Embodiment 3

[0025] Zinc oxide silicon ceramic target material containing 1.5% silicon oxide is used to deposit zinc oxide silicon film on 3mm thick hot bending glass by sputtering method. The sputtering process is working pressure 2.5Pa, background vacuum 4.0×10 -3 Pa, the voltage is 370V. The frequency of the medium frequency AC arc suppression power supply is 30KHz, and the glass temperature is 100°C. A zinc oxide silicon film with a thickness of 300 nm was deposited. Then it is packaged together with 0.8mm thick PVB film and 4mm thick hot bending glass as figure 2 A car windshield of the structure shown. Install the car windshield glass on a car. Under the condition of the outside temperature of 35°C, the car is parked still in a place directly exposed to the sun. After turning off the power for 2 hours, the temperature inside the car with the ordinary car windshield glass installed reaches 67°C. And the car interior temperature that has installed the automobile windshield glass of...

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Abstract

An anti-fogging insulating windshield with high infrared reflectivity (more than 70%) features that a semiconductor oxide film, which may be the indium oxide film doped by tin oxide or the zinc oxide film doped by at least one of aluminium oxide, silicon oxide, boron oxide, dysprosium oxide and gallium oxide, is arranged between PVB film and the internal or external surface of glass. Its preparing processis also disclosed.

Description

technical field [0001] An automobile windshield with infrared reflection performance and a preparation method thereof relate to the technical field of design and manufacture of automobile windshields, in particular to the technical field of design and manufacture of high-grade automobile windshields with functions of energy saving, heat insulation and anti-fogging. technical background [0002] Energy and environmental protection are the most concerned issues in modern society. Especially in vehicles and ships, cold winter and hot summer are a common problem. Because ordinary windshield glass has no obvious reflection effect on infrared, the glass of automobiles and ships becomes an important window for energy loss. It is of practical significance to develop an automobile windshield glass with infrared reflection performance, which can reflect infrared rays, thereby reducing the loss of automobile energy. In addition, this kind of automobile windshield with infrared reflec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60J1/00C03C17/30
Inventor 庄大明张弓赵方红方玲杨波
Owner TSINGHUA UNIV
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