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Vacuum laminated glass and preparation method thereof

A technology of vacuum laminated glass and vacuum glass, applied in glass manufacturing equipment, glass production, glass molding, etc., can solve the problems of high film haze, inconvenience, glass bending, etc., and achieve high product qualification rate and strong process operability , to achieve the effect of mass production

Inactive Publication Date: 2014-07-23
CHINA BUILDING MATERIALS ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of them is realized by the method of interlayer first and then vacuum preparation. The problem is that the temperature of the vacuum preparation process is 200°C to 300°C higher than that of the interlayer process, and its productivity cannot be realized; Glass, but the autoclaved EVA (or PA) film is used in the interlayer process, because the film has high haze, poor aging resistance, and the glass bends due to edge flow during heating, so it is not suitable for popularization
[0004] This shows that above-mentioned existing vacuum laminated glass and preparation method thereof obviously still have inconvenience and defect in structure or use, and urgently need to be further improved

Method used

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  • Vacuum laminated glass and preparation method thereof
  • Vacuum laminated glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] figure 1 It is a schematic cross-sectional view of an embodiment of the vacuum laminated glass of the present invention. like figure 1 As shown, the vacuum laminated glass includes a vacuum glass body 1, and one side of the vacuum glass body 1 is bonded with an outer glass 3 through a polyvinyl butyral film 2. The sealing edge width of the glass frit 103 is 25 mm. Concrete preparation process comprises the following steps:

[0039] a. Lay a layer of polyvinyl butyral film 2 on one side of the prepared vacuum glass body 1, and lay an outer glass 3 on the polyvinyl butyral film 2;

[0040] b. Put the vacuum glass body 1 with the outer glass 3 laid into a vacuum bag and evacuate until the vacuum degree is 10Pa; The strip extends to the air port of the vacuum bag, and the vacuum degree in the vacuum bag is kept below 10Pa for bonding. The air guide port of the vacuum bag is connected with a vacuum pump so that the vacuum bag can be evacuated, the gas between the polyvi...

Embodiment 2

[0043] figure 2 It is a schematic sectional view of another embodiment of the vacuum laminated glass of the present invention. see figure 2The difference between this embodiment and Embodiment 1 is that the two sides of the vacuum glass body 1 are respectively bonded with outer glass 3 through polyvinyl butyral film 2 . The sealing edge width of the glass frit 103 is 8 mm. In step a, a layer of polyvinyl butyral film 2 is respectively laid on both sides of the prepared vacuum glass body 1, and then an outer layer of glass 3 is respectively laid on the polyvinyl butyral film 2; in step b, the vacuum The bag is evacuated to a vacuum of 8Pa; in step c, the temperature in the autoclave rises to 135°C at a heating rate of 1.5°C / minute, and the pressure is raised to 0.1MPa at a rising rate of 1.1Kpa / minute for heat preservation and pressure holding. The heat preservation and pressure holding time is 2 hours. After the heat preservation and pressure holding are completed, the t...

Embodiment 3

[0045] This embodiment is different from Embodiment 1 in that the width of the sealing edge of the glass frit 103 is 15 mm. In step b, the vacuum bag is evacuated to a vacuum degree of 6Pa; in step c, the temperature in the autoclave rises to 130°C at a heating rate of 1.3°C / minute, and the pressure is raised to 0.3MPa at a rising rate of 3Kpa / minute, and the Heat preservation and pressure preservation, the heat preservation and pressure preservation time is 2.5 hours. After the heat preservation and pressure holding are completed, the temperature is lowered to 50°C at a cooling rate of 1.0°C / min, and then the pressure is lowered.

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Abstract

The invention discloses a vacuum laminated glass and a preparation method thereof. The vacuum laminated glass comprises a vacuum glass body, and one surface or two surfaces of the vacuum glass body is adhered to an outer glass layer with a polyvinyl butyral (PVB) sheet. The vacuum laminated glass has the advantages of simple structure, high safety, and easy preparation.

Description

technical field [0001] The invention relates to the technical field of laminated glass, in particular to a vacuum laminated glass with high safety performance and a preparation method thereof. Background technique [0002] Vacuum glass is to seal the surroundings of two pieces of flat glass and form a vacuum in the gap formed by the two pieces of flat glass. Because vacuum glass has many advantages such as heat preservation and energy saving, it is widely used in construction engineering, freezers and other fields. However, when the outer glass of the vacuum glass is accidentally broken, the glass fragments will splash, which may cause other accidental injuries, poor safety, and potential safety hazards. The concept of vacuum glass was proposed at the University of Sydney in 1990, and the world's first production line was built in Kyoto, Japan in early 1997. Due to the particularity that vacuum glass needs to be prepared at high temperature, countries such as the United St...

Claims

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Application Information

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IPC IPC(8): C03B23/24C03C27/10B32B17/10B32B27/04
CPCY02P40/57
Inventor 陈记寿汪洪余刚左岩吴云龙李要辉王辰
Owner CHINA BUILDING MATERIALS ACAD