Manufacturing process of fiber cement board
A technology of fiber cement board and manufacturing process, which is applied in building structure, covering/lining, construction, etc. It can solve the problems of unsatisfactory product qualification rate, lower board strength, autoclaved cracks, etc., and reduce the probability of autoclaved cracks , increase the strength of the board, and the effect of light weight
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[0030] Example Manufacturing process of fiber cement board
[0031] Process One
[0032] First, use a mixer to dry-mix the wood fiber at a speed of 700 rpm and a dry mixing time of 10 seconds. Then add P·Ⅱ52.5 cement, 200 mesh quartz powder, polyacrylamide, 325 mesh talc, cellulose ether, The synthetic fiber continued to dry stirring, the continuous dry stirring speed was 700 rpm, the continuous dry stirring time was 20 seconds, and then water was added to wet stirring, the stirring time was 95 seconds, and the stirring speed was 600 rpm. The raw materials of fiber cement board were obtained, including polyacrylamide, The content of P·Ⅱ52.5 cement, 200 mesh quartz powder, polyacrylamide, 325 mesh talcum powder, cellulose ether, synthetic fiber and wood fiber are:
[0033]
[0034] Secondly, use a kneader to knead the raw material of the fiber cement board, the kneading time is 180s, and the kneading speed is greater than or equal to 65 rpm.
[0035] Once again, a vacuum extruder is u...
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