Method for preparing glue-free lightweight high-strength fiber board
A technology of high-strength fiber and manufacturing method, which is applied in fiberboard, fiber raw material processing, papermaking and other directions, can solve the problems of polluting the indoor environment, endangering the human health and life safety of consumers, etc., and achieves low production cost, easy implementation, and convenient operation. Effect
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[0017] Example 1:
[0018] (1) Material preparation: Weigh waste paper and wood fiber according to the mass ratio of waste paper to wood fiber of 3:7, and then mix them to obtain a mixed material;
[0019] (2) Raw material dissociation: hydrolyze the mixed material at 80°C for 10 hours to obtain a coarse slurry;
[0020] (3) Slurry mixing: use a dissociator (speed greater than 500 revolutions / min) to mix evenly to obtain a slurry;
[0021] (4) The product can be obtained by subsequent processing according to the wet fiberboard procedure, and the product density is 0.40~0.60g / cm 3 , Other physical and mechanical properties meet or exceed relevant national standards.
[0022] In the above step (1), waste paper refers to waste newspapers, waste books, productive waste paper, waste paper pulp, waste poster paper or chemical pulp; wood fiber refers to fiber used for fiberboard production.
[0023] In the above step (2), the hydrolysis is assisted by temperature, ultrasound, microwave, ...
Example Embodiment
[0024] Example 2:
[0025] (1) Material preparation: Weigh waste paper and wood fiber according to the mass ratio of waste paper to wood fiber of 4:6, and then mix them to obtain a mixture;
[0026] (2) Dissociation of raw materials: hydrolyze for 8 hours at 100°C under ultrasonic conditions to obtain coarse slurry;
[0027] (3) Slurry mixing: use a high-speed pulverizer (speed greater than 500 revolutions / min) to mix evenly to obtain a slurry;
[0028] (4) The product can be obtained by subsequent processing in accordance with the wet fiberboard procedure, and the product density is 0.40~0.60g / cm 3 , Other physical and mechanical properties meet or exceed relevant national standards.
[0029] In the above step (2), the hydrolysis is assisted by temperature, ultrasound, microwave, high frequency or combined means to accelerate the hydrolysis.
Example Embodiment
[0030] Example 3:
[0031] (1) Material preparation: Weigh waste paper and wood fiber according to the mass ratio of waste paper to wood fiber of 4.5:5.5, and then mix them to obtain a mixed material;
[0032] (2) Dissociation of raw materials: the mixed materials are hydrolyzed in cold water for 48 hours to obtain coarse slurry;
[0033] (3) Slurry mixing: use a high-speed mixer (speed greater than 500 revolutions / min) to mix evenly to obtain a slurry;
[0034] (4) The product can be obtained by subsequent processing according to the wet fiberboard procedure, and the product density is 0.40~0.60g / cm 3 , Other physical and mechanical properties meet or exceed relevant national standards.
[0035] In the above step (2), the hydrolysis is assisted by temperature, ultrasound, microwave, high frequency or combined means to accelerate the hydrolysis.
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