Magnesium crystal fireproof and flame-retardant plate and preparation method thereof
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A fire-retardant, magnesium oxide technology, applied in the field of building materials, can solve the problems of poor effect, low formaldehyde emission, inability to balance fire prevention and waterproof and moisture-proof, etc.
Active Publication Date: 2018-01-30
重庆市镁晶防火材料有限公司
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[0003] The invention proposes a magnesium crystal fire-proof and flame-retardant board. The formaldehyde emission of the flame-retardant board is lower than the European standard, and it has multiple performances of fire prevention, water resistance and moisture resistance. The problem
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Embodiment 1
[0016] A magnesium crystal fireproof flame retardant board, calculated by weight, including 18 parts of magnesium oxide, 10 parts of magnesium sulfate, 45 parts of sawdust, 5 parts of aluminum oxide, 2.5 parts of copper sulfate, 9 parts of bentonite, 1 part of organic silicon, stearin Calcium acid 3 parts, boric acid 1 part, citric acid 1.7 parts, trisodium phosphate 1.3 parts, water 11 parts, polyvinyl alcohol 2 parts, polypropylene fiber 1 part, silyl powder 5 parts.
Embodiment 2
[0018] A magnesium crystal fireproof flame retardant board, including 18 parts of magnesium oxide, 10 parts of magnesium sulfate, 40 parts of sawdust, 6 parts of aluminum oxide, 2.5 parts of copper sulfate, 8 parts of bentonite, 2 parts of organic silicon, 4 parts of calcium stearate, 4.5 parts of modifier, 12 parts of water, 3 parts of polyvinyl alcohol, 2 parts of polypropylene fiber, and 5 parts of silane-based powder.
[0019] The invention also discloses a preparation method of a magnesium crystal fire-proof and flame-retardant board, which includes the following steps: (1) stirring and mixing magnesium sulfate and water to make a solution, which is metered and put into a mixer for use;
[0020] (2) Magnesium oxide, polyvinyl alcohol, polypropylene fiber, silane-based powder, and sawdust are weighed and measured successively, put into the batching bin, transported to the mixer and stirred with the solution for 10 minutes;
[0021] (3) After adding bentonite, aluminum oxid...
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Abstract
The invention discloses a magnesium crystal fireproof and flame-retardant plate. The magnesium crystal fireproof and flame-retardant plate comprises the following components in parts by weight: 18 to23 parts of magnesium oxide, 10 to 12 parts of magnesium sulfate, 40 to 45 parts of sawdust, 5 to 6 parts of alumina, 2 to 2.5 parts of copper sulfate, 8 to 10 parts of bentonite, 1 to 2 parts of organosilicon, 3 to 4 parts of calcium stearate, 3.5 to 4.5 parts of a modifying agent, 10 to 12 parts of water, 2 to 3 parts of polyvinyl alcohol, 1 to 2 parts of polypropylene fiber and 4 to 5 parts ofsilane based powder. The flame-retardant plate provided by the invention has a formaldehyde emission amount lower than the formaldehyde emission amount in European standard, has multiple performancesof preventing fire, water and moisture, and solves the problem that a conventional plate can not combines fireproof, waterproof and moisture-proof performances or has poor effects of preventing fire,water and moisture.
Description
technical field [0001] The invention belongs to the field of building materials, and in particular relates to a magnesium crystal fireproof and flame-retardant board and a preparation method thereof. Background technique [0002] Magnesium crystal fireproof and flame retardant board is made of magnesium forming agent, glass fiber mesh cloth, filler, etc., through mechanical rolling, and is mainly used for indoor non-load-bearing walls and ceilings, as well as substrates for various decorative panels. Magnesium crystal fireproof and flame-retardant boards in the prior art usually use magnesium oxide and magnesium chloride as forming agents. In order to make magnesium fully and quickly condense, the content of magnesium chloride should not be too low, otherwise the purpose of fully and quickly condensing magnesium will not be achieved. And when the content of magnesium chloride meets the purpose of fully and rapidly coagulating magnesium, the content of chloride ions is too hi...
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