Waterproof thermal-insulation glass magnesium board and preparation method thereof

Abstract

The invention discloses a waterproof thermal-insulation glass magnesium board and a preparation method thereof and belongs to the technical field of preparation of new building materials from non-metallic minerals. The glass magnesium board is mainly prepared from the following raw materials in parts by weight: 10-18 parts of light calcined magnesia, 15-25 parts of magnesium chloride hexahydrate, 20-25 parts of water, 5-10 parts of superfine slag powder, 0.5-2 parts of hydrophobic aerogel, 0.3-0.6 part of a surface modifier and 0.25-0.5 part of a waterproof modifier. The waterproof thermal insulation glass magnesium board has good water resistance, hardly produces halogenide, does not warp or deform and is light in weight, thermal insulation performance is greatly improved, and quality defects of an existing glass magnesium board are overcome, and application range of the glass magnesium board is expanded.

Description

technical field [0001] The invention belongs to the technical field of manufacturing new building materials from non-metallic minerals, and in particular relates to a water-resistant and heat-preserving glass magnesium board and a preparation method thereof. Background technique [0002] Magnesium oxychloride cement gelling material is made of lightly burned MgO, MgCl and H 2 O is blended in a certain proportion and is also called Sorel cement. Magnesium oxychloride cement is a kind of air-hardening cementitious material, which has a series of excellent properties mainly in: light weight, high strength, low alkalinity, corrosion resistance, impact resistance, easy molding, simple production process, low cost, energy Low power consumption and environmental friendliness make it widely used in construction engineering, municipal engineering, agricultural production, environmental protection industry, machinery packaging, transportation and light industry. However, magnesium o...

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Problems solved by technology

However, magnesium oxychloride cement gelling materials also have many obvious disadvantages: poor water resistance, easy cracking, warping deformation, return to halogen and frost, etc., seriously restricting its development. Poor water resistance is manifested in: general magnesium oxychloride cement products After soaking in water for 28 days, its strength will be reduced by 70% to 80%.

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