Double-layer composite glass magnesium board with high fireproof grade and preparation method of double-layer composite glass magnesium board

Abstract

The invention discloses a double-layer composite glass magnesium board with a high fireproof grade. The double-layer composite glass magnesium board is characterized by being prepared from the following raw materials in parts by weight: 42-45 parts of light calcined magnesia, 39-41 parts of magnesium chloride hexahydrate, 7-9 parts of forsterite powder, 5-7 parts of tourmaline powder, 4-6 parts of expanded graphite, 1-2 parts of ammonium polyphosphate, 4.5-5 parts of metakaolin, 2.5-3 parts of aluminum dihydrogen phosphate, 1.5-2.5 parts of aluminum silicate fibers, 0.2-0.25 part of a silane coupling agent kh 550, 1.5-2 parts of waterborne polyurethane, 6-8 parts of a 5% polyvinyl alcohol solution, 15-18 parts of thermoplastic phenolic resin, 5-6 parts of 25% urotropine aqueous solution and a proper amount of pure water. According to the double-layer composite glass magnesium board, the forming time is shortened through a modifying process, the process is convenient for industrial control, the components are simple and easily available, and the production efficiency is improved; the prepared glass magnesium board has double-layer effect, is smooth and attractive in surface, high in fireproof grade, safe and non-toxic, and a moisture absorption and deformation problems are solved.

Description

technical field [0001] The invention relates to the field of decorative materials, in particular to a double-layer composite glass magnesium board with high fire resistance and a preparation method thereof. Background technique [0002] Magnesium oxychloride gel material is an air-condensing material, which has the energy-saving function of producing products without burning and steaming. Magnesium oxychloride material has excellent physical and mechanical properties, and it has outstanding fire resistance and wear resistance, making it This material is widely used in construction engineering, municipal engineering, agricultural production, environmental protection industry, machinery packaging, transportation and light industry. Glass magnesium board is the leading product in the magnesium oxychloride gel material industry. It has outstanding fire resistance, and the fire resistance limit can reach 1-4 hours. It has excellent bending resistance, impact resistance, heat insu...

AI Technical Summary

Problems solved by technology

[0003] Poor water resistance is a defect that hinders the development of glass magnesium board. Due to the structural characteristics of hydration products, the board is easy to return to halogen, warp and deform when used in a humid environment, which limits the scope of use and service life of glass magnesium board.