Fireproof door core plate and production method thereof

[0022] A fire door core board, comprising the following raw materials in mass fractions: 50 parts of deionized water, 30 parts of magnesium chloride, 5 parts of magnesium chloride, 0.5 parts of polyacrylonitrile-based carbon fiber, 0.5 part of polypropylene fiber, 10 parts of calcium bicarbonate, 1 part of modifier, 5 parts of silica fume, 10 parts of vegetable foaming agent, 5 parts of sodium carboxymethyl cellulose, 1 part of phosphoric acid. The polyacrylonitrile-based carbon fibers and polypropylene fibers have a length of 5 mm.

[0023] A method for preparing a fire door core board, comprising the following steps:

[0024] Step 1. Mix magnesium chloride and magnesium chloride with ionized water in turn, stir at room temperature for 10 minutes, and let stand to room temperature;

[0025] Step 2. Then add polyacrylonitrile-based carbon fiber and polypropylene fiber and stir at room temperature for 30 minutes, then keep warm at 30°C for 10 minutes, and then cool to room temper

[0032] A fire door core board, comprising the following raw materials in mass fractions: 60 parts of deionized water, 40 parts of magnesium chloride, 15 parts of magnesium chloride, 1 part of polyacrylonitrile-based carbon fiber, 1 part of polypropylene fiber, 15 parts of calcium bicarbonate, 2 parts of modifier, 10 parts of silica fume, 20 parts of vegetable foaming agent, 10 parts of sodium carboxymethyl cellulose, 2 parts of phosphoric acid. The polyacrylonitrile-based carbon fibers and polypropylene fibers have a length of 10 mm.

[0033] A method for preparing a fire door core board, comprising the following steps:

[0034] Step 1. Mix magnesium chloride and magnesium chloride with ionized water in turn, stir at room temperature for 15 minutes, and let stand to room temperature;

[0035] Step 2, add polyacrylonitrile-based carbon fiber and polypropylene fiber and stir at room temperature for 55 minutes, then keep warm at 32°C for 15 minutes, and then cool to room temperatur

[0042] A fire door core board, comprising the following raw materials in mass fractions: 55 parts of deionized water, 35 parts of magnesium chloride, 10 parts of magnesium chloride, 0.7 parts of polyacrylonitrile-based carbon fiber, 0.7 part of polypropylene fiber, 12 parts of calcium bicarbonate, 1.5 parts of modifier, 7 parts of silica fume, 15 parts of vegetable foaming agent, 7 parts of sodium carboxymethyl cellulose, 1.5 parts of phosphoric acid. The polyacrylonitrile-based carbon fibers and polypropylene fibers have a length of 7 mm.

[0043] A method for preparing a fire door core board, comprising the following steps:

[0044] Step 1. Mix magnesium chloride and magnesium chloride with ionized water in turn, stir at room temperature for 12 minutes, and let stand to room temperature;

[0045] Step 2. Then add polyacrylonitrile-based carbon fiber and polypropylene fiber and stir at room temperature for 40 minutes, then keep warm at 34°C for 12 minutes, and then cool to room