Ceramic fiberboard and manufacturing technique
A ceramic fiberboard, production process technology, applied in fiberboard, textiles and papermaking, papermaking, etc., can solve the problems of low density, impact resistance, poor abrasion resistance, poor product strength, etc., to achieve high density and impact resistance Strong, good abrasion resistance
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[0022] Example 1: (Semi-continuous production method)
[0023] 1) Selecting amorphous ceramic fiber with a diameter of 2-3μm and a length of 20-80mm, using a continuous wet forming process to produce ceramic fiber paper with a thickness of 0.4mm and a width of 600mm.
[0024] 2) Cut the roll-shaped ceramic fiber paper into a size of 500mm×500mm for use.
[0025] Acrylate emulsion 1000ml, polyacrylamide (molecular weight: 5 million) 3% aqueous solution 200ml, high alumina cement (CA-50) 1kg, kaolin 500g, talc (325 mesh) 100g, wollastonite (400 mesh) 200g Stir vigorously and mix evenly for 4 to 5 minutes to form a paste binder and filler mixture for later use.
[0026] To produce a ceramic fiber board with a thickness of about 3.2mm: first spread a 0.4mm thick, 500mm×500mm ceramic fiber paper, and evenly brush a layer of the above-mentioned paste binder material (150ml, thickness about 1.3mm), and cover it with Two sheets of ceramic fiber paper, and then evenly brush a layer of past...
Example Embodiment
[0030] Example 2: (Continuous production method)
[0031] The specific operation process is as follows:
[0032] 1) Using amorphous ceramic fiber with a diameter of 2-3μm and a length of 20-80mm, a continuous wet molding process is used to produce ceramic fiber paper with a thickness of 0.4mm and a width of 600mm.
[0033] 2) Spray the acrylate emulsion adhesive with a solid content of 2-3% on the wet paper, and suck off part of the adhesive through a negative pressure of 0.01-0.02MPa; at a distance of 30-50cm from the applied adhesive, A linear feeder is used to uniformly apply the powdered filler mixture (high alumina cement 500g, alumina 300g, pyrophyllite powder 200g, mica powder 100g, clay 150g), and the filler applied per square meter is controlled between 70-150g. The filled ceramic fiber paper enters the drying furnace.
[0034] 3) The temperature of the drying oven is controlled at 40-60°C, and the drying time is 3-5 minutes. At this time, the binder in the ceramic fiber ...
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