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A composite safety glass made with a multilayer thermoplastic polymer interlayer film

A thermoplastic polymer, safety glass technology, applied in glass/slag layered products, layered products, synthetic resin layered products, etc. Achieve the effect of reducing the probability of inner glass breaking, improving impact resistance and reducing impact resistance

Active Publication Date: 2016-09-14
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional safety glass generally improves the impact strength of safety glass by increasing the thickness of structural materials on both sides, but this method greatly increases the weight of the part on the one hand, which is very unfavorable for the application of transparent parts in advanced vehicles; on the other hand On the one hand, due to the small thickness of the interlayer film material, it cannot play a good role in dispersing impact energy and buffering, so when it is hit by a foreign object, it will generally cause two layers of glass to break at the same time, which cannot play a good safety role.
Therefore, traditional safety glass cannot combine the advantages of weight reduction and strength improvement

Method used

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  • A composite safety glass made with a multilayer thermoplastic polymer interlayer film
  • A composite safety glass made with a multilayer thermoplastic polymer interlayer film
  • A composite safety glass made with a multilayer thermoplastic polymer interlayer film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] On a flat plate, the size of chemical tempered glass is 2.5mm, 0.1mm thick EVA resin film, 0.76mm thick TPU film, 2.28mm thick hard PVB film, 0.76mm thick TPU film, 0.1mm thick EVA resin film and 2.5 mm chemically tempered glass. Place the laminated sample in a vacuum bag, seal the opening of the vacuum bag with adhesive tape, turn on the vacuum pump to evacuate the vacuum bag, and the vacuum degree is 0.03MPa. The vacuum bag is placed in an autoclave, the temperature is controlled at 120-135 ° C, the system pressure is 0.5-1.0 MPa, and the heating and pressurization is maintained for 1 hour. After the heating and pressurization was stopped, the samples were naturally cooled and taken out for testing.

Embodiment 2

[0028] According to the method of Example 1, the lamination and hot pressing processes are carried out. Just change the TPU film to 1.14mm here, and replace the middle PVB hard film to 1.52mm, keep other parameters unchanged, and prepare samples;

Embodiment 3

[0030] According to the method of Example 1, the lamination and hot pressing processes are carried out. Just change the TPU film to 1.5mm here, and replace the middle PVB hard film to 0.76mm, keep other parameters unchanged, and prepare samples;

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Abstract

The invention belongs to the technical field of safety glass and relates to compound safety glass manufactured by a multilayered thermoplastic polymer intermediate film. The compound safety glass is prepared by the following steps: (1) using a hard polyvinyl butyral (PVB) thin film as a center layer which is 1-4mm thick; (2) symmetrically distributing one or two soft polyurethane (PU) thin films on two sides of the center layer as buffer layers which are 0.3-1.5mm thick; (3) adding a thin tackifying layer outside the intermediate layer as the outermost layer which is commonly an organic silicon resin film or an ethylene vinyl acetate copolymer resin (EVA) and is 0.3mm thick; and (4) compounding the intermediate film and two inorganic glass to prepare the safety glass. The safety glass provided by the invention has relatively small weight and good anti-impact capacity.

Description

technical field [0001] The invention belongs to the technical field of safety glass and relates to a composite safety glass made of multi-layer thermoplastic polymer intermediate film. Background technique [0002] Composite safety glass is composed of two or more pieces of inorganic or organic glass bonded together through one or more layers of interlayer film. Due to its excellent impact resistance, composite safety glass is widely used in many fields such as architectural glass, automobile windshield glass, transparent parts of aviation structures, and high-speed rail glass. At the same time, the interlayer film can be structurally designed and combined according to different needs, so that it can have a variety of different functions, such as wire fireproof glass, sound insulation glass, energy-saving glass, ultraviolet absorption glass, electromagnetic shielding glass, Electric heating glass and so on. [0003] For composite safety glass, the outer glass mainly provid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/08B32B17/10B32B7/12B32B27/30B32B27/36B32B27/40
CPCB32B7/12B32B17/10036B32B27/06B32B27/08B32B27/30B32B27/36B32B27/40
Inventor 张晓雯颜悦郭新涛姜良宝
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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