Infrared shielding film and method for manufacturing the same

Abstract

An infrared shielding film and a method for manufacturing the same are provided. The infrared shielding film includes an infrared absorbing layer and a first infrared reflecting layer disposed on a surface of the infrared absorbing layer. The infrared absorbing layer contains a uniform distribution of composite tungsten oxide particles that are present in an amount of 0.1% to 10% by weight based on the total weight of the infrared absorbing layer. The first infrared reflecting layer contains a uniform distribution of titanium oxide particles that are present in an amount of 0.1% to 10% by weight based on the total weight of the first infrared reflecting layer.

Description

technical field [0001] The invention relates to a heat insulation structure, in particular to an infrared shielding film and a manufacturing method thereof. Background technique [0002] Affected by global warming, the demand for heat insulation and energy saving is increasing day by day. For example, when sunlight enters the room through glass windows, the infrared rays in the sunlight will cause the indoor temperature to rise, so it is necessary to use ventilation or cooling devices to reduce the discomfort of high temperature; according to statistical results, in summer through the glass The solar radiation entering the room through the window significantly increases the energy consumption of the air conditioner. It can be seen that the thermal insulation performance of the glass window of the building has a great influence on the indoor temperature. Similarly, the heat insulation performance of automotive glass is also one of the main factors affecting the temperature ...

AI Technical Summary

Problems solved by technology

[0003] The current common heat insulation method is nothing more than setting a metal infrared reflective layer or a dyed layer on the target object. Although the metal infrared reflective layer can reflect infrared and ultraviolet rays, related products will cause light pollution; in addition, although the dyed layer can be Absorbs infrared rays, but it does not insulate well and fades easily

In addition, there is also a heat insulation method, which is to use a metal coating (such as silver coating) with a dielectric layer to form a multi-layer film structure, which can selectively allow visible light to penetrate and block infrared rays through light interference; however, This method requires large investment in equipment, high cost of raw materials and low product yield

In addition, there is still room for improvement in the heat insulation effect of the existing Low-E glass, and it is not decorative; and the glass product itself is fragile and cannot be reworked, and there are many inconveniences in application

[0004] In addition, the production of the existing infrared shielding film is to first mix the heat-shielding particles into the polymerization raw material and granulate, and then melt and extrude the formed polyester granules to form a film; whether this method is polymerization or kneading granulation The stages are all in a hot environment, and the heat history time is longer

Moreover, in order to improve the heat insulation effect, the existing infrared shielding film usually adds a large amount of heat insulation particles, which causes the appearance of the film to have too high haze.

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