Double-layer composite glass magnesium board with high fireproof grade and preparation method of double-layer composite glass magnesium board
A technology of composite glass magnesium board and fireproof grade, which is applied in the field of decorative materials, can solve the problems of limiting the use range and service life of glass magnesium board, easy to return halogen, warping, deformation, hindering the development of glass magnesium board, etc., and achieve far-reaching improvement. Infrared emissivity and negative ion release rate, smooth and beautiful surface, shortening molding time
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[0015] specific implementation plan
[0016] The present invention will be described in detail below through specific examples.
[0017] A double-layer composite glass magnesium board with high fire resistance, prepared from the following raw materials in parts by weight (kg): light-burned magnesium oxide 42, magnesium chloride hexahydrate 39, forsterite powder 7, tourmaline powder 5, expanded graphite 4, Ammonium polyphosphate 1, metakaolin 4.5, aluminum dihydrogen phosphate 2.5, aluminum silicate fiber 1.5, silane coupling agent kh550 0.2, water-based polyurethane 1.5, polyvinyl alcohol solution with a concentration of 5% 6, thermoplastic phenolic resin 15, with a concentration of 25% urotropine aqueous solution 5. Appropriate amount of pure water;
[0018] A double-layer composite glass-magnesium board with a high fireproof rating according to the present invention is made by the following specific steps:
[0019] (1) Mix tourmaline powder and silane coupling agent kh550,...
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