Non-combustible fireproof insulation board and preparation method thereof

Abstract

The invention discloses a non-combustible fireproof insulation board which comprises the following components in percentage by weight: 90-95% of an inorganic flame retardant, 0.5-1.5% of a binder and 3-10% of polystyrene powder. The preparation method comprises the following steps: S1, dissolving a binder in water to form a binder solution for later use, wherein the concentration of the binder solution is 1-10%; S2, uniformly spraying the obtained binder solution on the surface of an inorganic flame retardant, then adding polystyrene powder, conducting stirring, and conducting drying after uniform stirring, so as to obtain coated polystyrene particles for later use; and S3, foaming the wrapped polystyrene particles obtained in the previous step in high-pressure water vapor for 1-6 hours, conducting standing and aging at normal temperature for 24-144 hours, and finally performing compression molding to obtain the non-combustible fireproof insulation board. The prepared insulation board is good in thermal insulation and energy-saving effect, low in water absorption rate and long in service life.

Description

Technical field [0001] The present invention belongs to the technical field of insulation board, and in particular, the present invention relates to a non-combustible fire thermostatic plate and a preparation method thereof. Background technique [0002] At present, the insulation materials used in the market are mainly divided into two major categories: inorganic insulation materials and organic insulation materials. In summary, organic insulation materials have good weight, good thermal insulation performance, good material workability, and poor fireproof performance, poor stability and non-aging. Inorganic insulation materials such as pearl rocks, diatomaceous earth, asbestos, slagmets, foam glass, etc., although there is a certain fire prevention performance, but its thermal conductivity is high, poor insulation performance, and large weight. [0003] At present, the exterior insulation system applied to my country mainly has the following forms: expanded polystyrene plate (E...

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Problems solved by technology

[0008] The present invention completely abandons the design idea of ​​traditional A2 grade flame retardant and thermal insulation materials, and adopts a brand-new concept of fire prevention and thermal insulation. It uses polystyrene particles with excellent thermal insulation properties to wrap inorganic flame retardants with excellent flame retardant properties. Polystyrene granular material, accounting for up to 97% of the volume, is wrapped on the surface of the inorganic flame retardant, so that the inorganic flame retardant is evenly separated, inhibiting the transfer of heat, thereby ensuring the thermal conductivity of the insulation material; on the other hand , an inorganic flame retardant with high density and excellent flame retardant performance, the mass ratio is as high as 92%, and it can fully play the role of flame retardant and smoke suppression in the combustion process; and then solve the compatibility problem between the two through the binder, Polystyrene solves the problems of polystyrene particle strength and inorganic flame retardant water and heat absorption, and fundamentally solves the problems of high thermal conductivity, high water absorption and poor tensile strength of traditional A2 insulation materials

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