A film for inhibiting the breakage of thin glass and a preparation method thereof

Abstract

The present invention relates to a thin film for inhibiting the breakage of thin glass and a preparation method thereof, comprising a thin glass substrate, characterized in that: (1) a layer of sol is coated on the surface of the thin glass by roller coating, blade coating or slit coating, wherein the sol is composed of silicon oxide and one of aluminum and titanium oxides; and the sol is cured at 300-500°C for 1-5 min to obtain a bottom layer of a double film layer; and (2) 30-55% of polyurethane organosilicon modified acrylate resin, 0.1-8% of auxiliary agent, 1-5% of coupling agent, 1-5% of zirconium alkoxide, 20-45% of water and 1-5% of aqueous photoinitiator are uniformly mixed, mixed, dispersed and filtered to prepare a polyurethane organosilicon modified acrylate emulsion coating, which is then sprayed on the bottom layer, irradiated in a UV curing furnace for 10-60 s, and thermally cured at 150-250°C for 30-160 s to obtain a double film surface layer. The invention has the advantages that the bottom silicon-titanium film or silicon-aluminum film is firmly combined with the glass substrate, thereby solving the problem of strengthening thin glass and improving the impact resistance and breakage resistance of thin glass.

Claims

1. A film for inhibiting the breakage of thin glass, characterized in that: The invention has a double-layer membrane structure, wherein the bottom layer of the double-layer membrane is a composite sol composed of silicon oxide and one of aluminum and titanium oxides, which is prepared by coating, and the surface layer is an aqueous photocurable coating liquid with polyurethane silicone modified acrylate emulsion as a film-forming material, which is prepared by spraying; the composite sol coating liquid of the surface layer contains, by mass fraction, 30-55% polyurethane silicone modified acrylate resin, 0.1-8% auxiliary agent, 1-5% coupling agent, 1-5% zirconium alkoxide, 20-45% water, and 1-5% aqueous photoinitiator; the sol is a silicon oxide-titanium oxide composite sol or a silicon oxide-aluminum oxide composite sol, wherein the silicon-titanium molar ratio or the silicon-aluminum molar ratio is 1-4:1; the auxiliary agent includes a dispersant, a mildew inhibitor, and a thickener.

2. A thin film for inhibiting the breakage of thin glass according to claim 1, characterized in that: The coupling agent is one or two of a silane coupling agent, a titanate coupling agent, a zirconium coupling agent, and an aluminate coupling agent.

3. The thin film for inhibiting the breakage of thin glass according to claim 1, characterized in that: The zirconium alkoxide is zirconium propoxide or zirconium butoxide.

4. A thin film for inhibiting the breakage of thin glass according to any one of claims 1 to 3, characterized in that: The photoinitiator is one or two of acetophenone derivatives, benzophenone derivatives, TPO, 184, MAPO, and BAPO containing water-soluble groups.

5. A method for preparing a thin film for inhibiting the breakage of thin glass according to claim 1, comprising a thin glass substrate, characterized in that The steps include: (1) coating a layer of sol on the surface of the thin glass by roller coating, blade coating or slit coating, wherein the sol is composed of silicon oxide and one of aluminum oxide and titanium oxide; curing the sol at 300 to 500° C. for 1 to 5 min to obtain a bottom layer of the double film layer; (2) The preparation steps include batching, mixing, dispersing and filtering to prepare a polyurethane silicone modified acrylate emulsion coating, which is then sprayed on the base layer prepared in step (1), irradiated in a UV curing oven for 10 to 60 seconds, and then heat-cured at 150 to 250°C for 30 to 160 seconds to obtain a double-layer film surface layer.

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