PVB (polyvinyl butyral) film having heat-insulating property and preparation method thereof

Abstract

The invention provides a PVB (polyvinyl butyral) film having heat-insulating property, which comprises the following components in percentage by mass: 0.1-1% of ITO (indium tin oxide) nano emulsion, 19-40% of plasticizer, 59-80% of PVB resin powder, 0.1-2% of antioxidant and 0.05-1% of ultraviolet absorbent, wherein the ITO nano emulsion comprises the following components in percentage by mass: 65-90% of organic solvent, 5-20% of PVB resin powder and 5-15% of ITO nano powder. The invention also relates to a preparation method of the PVB film having heat-insulating property, which comprises the following steps: dissolving a small amount of PVB in organic solvent, adding a right amount of ITO powder, and repeatedly milling to a nano level with a ball mill, thus obtaining a nano emulsion; proportionally mixing the nano emulsion with the plasticizer, and adding into the PVB resin powder; and plastifying in a plastic extruding machine, and performing film formation through a mold, thus obtaining the PVB film. Thus, the invention effectively solves the aggregation problem.

Description

technical field [0001] The invention relates to a PVB diaphragm with thermal insulation performance and a preparation method thereof. Background technique [0002] Since the introduction of polyvinyl butyral (hereinafter referred to as PVB) film laminated glass in the United States in 1935 and its use in automobiles by law in 1938, especially since 1964, for the safety of passengers, high penetration glass has been gradually developed. Li's PVB film laminated glass has been used as a standard in many countries. However, with the development of the times, the requirements of passengers have gradually increased, so it is necessary to develop PVB membranes with special functions to produce laminated glass, among which the heat insulation function is representative. [0003] In order to pursue a sense of openness, a large area of ​​glass is used. At the same time, taking into account the heat input and the load ratio of the air conditioner, combining comfort and environmental p...

AI Technical Summary

Problems solved by technology

[0007] The invention provides a PVB diaphragm with thermal insulation performance and a preparation method thereof, which can effectively solve the problem of agglomeration when ITO nanometer powder is added, and the process for preparing the PVB diaphragm is simple and easy to use; The laminated glass has a good heat insulation effect, and has a high blocking rate for mid-infrared rays with a wavelength of 1500-2100nm.

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