Expanded graphite filler external wall insulating paint and preparation method thereof

Abstract

The invention discloses expanded graphite filler external wall insulating paint and a preparation method thereof. The paint is prepared from the following substances in parts by weight: 20-40 parts ofemulsion, 10-20 parts of filler, 5-10 parts of additives, 10-30 parts of water and 10-30 parts of expanded graphite. The preparation method comprises the following steps: (1) sufficiently mixing theemulsion and expanded graphite in weight parts, adding the water in the weight part, stirring until the substances are uniformly mixed to obtain mixture I; (2) uniformly mixing a thickening agent, dispersant, defoaming agent, film-forming agent, mildew preventive and pigment in weight parts to obtain the additives, keeping on stirring the additives and mixture I in weight parts until the substances are uniformly mixed to obtain a mixture III; and (3) slowly adding the filler in weight part into the mixture III, and keeping on stirring until the substances are uniformly mixed to obtain the external wall insulating paint.

Description

technical field [0001] The invention relates to the field of exterior wall coatings, in particular to an exterior wall thermal insulation coating with expanded graphite filler and a preparation method thereof. Background technique [0002] According to the heat insulation mechanism, heat insulation coatings can be divided into three types: barrier type, reflection type and radiation type. Among them, the barrier type heat insulation coating is a thick traditional coating, and its heat insulation mechanism is to resist heat transfer, and the technology is relatively mature; the radiation type heat insulation coating is relatively mature. Thermal coatings emit the heat of sunlight absorbed by buildings into the air at a certain wavelength in the form of radiation to achieve heat insulation and cooling; the heat insulation mechanism of reflective thermal insulation coatings is to reflect sunlight. [0003] In recent years, in order to effectively prevent heat conduction, reduce...

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Problems solved by technology

[0003] In recent years, in order to effectively prevent heat conduction, reduce the temperature of the surface coating and the internal environment, so as to achieve the purpose of improving the working environment and reducing energy consumption, people have successively carried out research on heat-insulating coatings for exterior walls, but the existing heat-insulating coatings The reflection and heat dissipation efficiency are not high, and there is an urgent need for an exterior wall thermal insulation coating with good reflection and heat dissipation efficiency