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Preparation method of safety glass

A safety glass, glass technology, applied in chemical instruments and methods, glass/slag layered products, lamination, etc., can solve problems such as damage to the service life of profiles, glass self-cracking, etc., to achieve convenient installation, excellent thermal insulation performance, difficult Excellent combustion performance

Inactive Publication Date: 2015-12-02
李毅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, a piece of bulletproof glass with a specification of 35mm×1.84m×3.66m weighs about 600kg, and the weight per square meter is about 100kg. Such a large self-weight will cause the glass to crack itself and damage the service life of the profile.
In addition, there will be a lot of splashes when the silicate glass is damaged, and the resulting secondary damage should not be underestimated

Method used

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  • Preparation method of safety glass
  • Preparation method of safety glass
  • Preparation method of safety glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A polycarbonate plate is used as the first material layer (A), and a polyurethane film is used as the adhesive layer (B). This embodiment provides a method for preparing safety glass with an ABA structure, specifically comprising the following steps:

[0062] S11: Lay polycarbonate boards and polyurethane boards together in the order of ABA, and then heat to 90°C for softening. The heating time is 20 minutes to preliminarily compound polycarbonate and polyurethane to obtain a mixed material.

[0063] S12: Then, put the mixed material into the autoclave, increase the pressure to 0.2MPa, and raise the temperature to 110°C. At this stage, the polycarbonate sheet begins to soften further and interacts with polyurethane molecules to produce crosslinks.

[0064] S13: After the above heating and pressurization, continue to increase the pressure of the autoclave to 1.2 MPa and the temperature to 130°C. At this stage, sufficient chemical crosslinking occurs between polycarbona...

Embodiment 2

[0067] A polycarbonate plate is used as the first material layer (A), and a polyurethane film is used as the adhesive layer (B). The present embodiment provides a kind of preparation method of the safety glass of ABABA structure, specifically comprises the following steps:

[0068] S21: The polycarbonate board and the polyurethane board are stacked together in the order of ABABA, and then heated to 100° C. for softening. The heating time is 10 minutes, so that the polycarbonate and polyurethane are preliminarily compounded to obtain a mixed material.

[0069] S22: Acting the mixed material in an environment with a pressure of 1 MPa and a temperature of 120° C. for 3 hours.

[0070] S23: Increase the pressure of the environment to 2 MPa and the temperature to 130° C., and act on the mixed material in the previous step for 4 hours in this environment. The pressure and temperature of the environment are then reduced to normal temperature and pressure.

[0071] Note: The thickne...

Embodiment 3

[0073] In this embodiment, a layer of inorganic silicate glass is added to the raw materials used, and the inorganic silicate glass layer is used as the second material layer (C), and the polycarbonate plate is continued to be used as the first material layer (A) 1. Polyurethane film is used as the adhesive layer (B) to prepare safety glass with CBA structure. Specifically include the following steps:

[0074] S31: The inorganic silicate glass, the polycarbonate plate and the polyurethane film are stacked together in the order of CBA, and then heated and softened to obtain a mixed material. In this embodiment, the heating temperature is 90° C., and the heating time is 15 minutes.

[0075] S32: Acting the mixed material in an environment with a pressure of 0.6 MPa and a temperature of 130° C. for 2 hours.

[0076] S33: Increase the pressure of the environment to 1.2 MPa, and maintain the temperature at 130° C., and act on the mixed material in the previous step for 3 hours in...

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Abstract

The invention provides a preparation method of safety glass. The preparation method comprises the following steps: heating and softening a polycarbonate plate and a polyurethane sheet to carry out primary combining, thus obtaining a mixed material; heating and pressurizing the mixed material so as to generate chemical crosslinking at the inner part, thus obtaining the mixed material subjected to primary crosslinking; increasing the pressure of the mixed material subjected to primary crosslinking to be at least 1.2MPa, increasing the temperature to be 130-150 DEG C, carrying out chemical crosslinking reaction, and then reducing to the normal temperature and normal pressure, thus obtaining the safety glass. Through the method, the polycarbonate plate and the polyurethane sheet are subjected to sufficient chemical crosslinking, the prepared safety glass has the advantages of high strength and light weight, the thinning effect of the safety glass is realized on the premise of guaranteeing the strength, not only is the installation convenient, but also the self explosion caused by excessive self weight can be avoided. Furthermore, the safety glass prepared by the preparation method has the advantages of good transparency, excellent heat preservation performance and good flame retardancy, and is wide in applicability.

Description

technical field [0001] The invention relates to the technical field of glass and its processing, in particular to a method for preparing safety glass. Background technique [0002] At present, most of the common safety glasses are composed of inorganic silicate glass and polyvinyl acetal film (PVB) under certain pressure and temperature. PVB is a thermoplastic engineering plastic material. It will cross-link with the glass, the color will change from translucent to fully transparent, and finally a fully transparent safety glass will be obtained. The overall thickness of the safety glass obtained after compounding starts from 2cm, and the overall thickness increases with the increase of the strength requirement, and some are as high as 10cm. However, due to the high specific gravity of glass (about 2500kg / m 3 ), brittle, so that its application and assembly have some limitations. For example, a piece of bulletproof glass with a specification of 35mm×1.84m×3.66m weighs abou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/10B32B27/06B32B27/36B32B7/12B32B37/02B32B37/10B32B37/12B32B37/06
CPCB32B17/10018B32B7/12B32B27/06B32B27/365B32B37/02B32B37/06B32B37/10B32B37/12B32B2307/30B32B2307/3065B32B2307/412B32B2307/558
Inventor 李毅戚海山
Owner 李毅
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