Environment-friendly homogeneous super-strong shaving board and preparation method thereof
A particleboard and super-large particleboard technology is applied in the field of environmentally friendly homogeneous super-strength particleboard and its preparation. Environmentally friendly effects
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Embodiment 1
[0026] (1) Chip the eucalyptus wood raw material, screen the wood chips with a length of 40-80 mm and a length of less than 40 mm, and use a ring-type long wood planer and an ordinary planer to separate wood chips of different sizes Processed into wood shavings;
[0027] (2) Set up a secondary vibrating screen at the wood shaving outlet of the ring-type long wood planer to screen out super-large and large shavings. Spray the activation modifier during the transportation of super-large and large shavings. During the intermediate storage process, it is activated and modified, and part of the lignin is removed;
[0028] The apertures of the secondary screens of the ring-type long product planer are 20mm × 60mm and 10mm × 40mm respectively.
[0029] The activation modifier is composed of 5 parts of sodium hydroxide (NaOH), calcium hydroxide (Ca(OH) 2 ) 0.8 parts, sodium sulfite (Na 2 SO 3 ) 8 parts, a composite solution consisting of 10 parts of ammonia solution and 90 parts o...
Embodiment 2
[0042](1) Chip the poplar wood raw material, screen the wood chips with a length of 40-80 mm and less than 40 mm, and process the wood chips of different sizes by using a ring-type long wood planer and an ordinary planer respectively into wood shavings;
[0043] (2) Set up a secondary vibrating screen at the wood shaving outlet of the ring-type long wood planer to screen out super-large and large shavings. Spray the activation modifier during the transportation of super-large and large shavings. During the intermediate storage process, it is activated and modified, and part of the lignin is removed;
[0044] The apertures of the secondary screens of the ring-type long product planer are 20mm × 60mm and 10mm × 40mm respectively.
[0045] The activation modifier is composed of 1 part of sodium hydroxide (NaOH), calcium hydroxide (Ca(OH) 2 ) 0.8 parts, sodium sulfite (Na 2 SO 3 ) 1 part, a composite solution consisting of 5 parts of ammonia solution and 70 parts of water; the...
Embodiment 3
[0058] (1) Chip the pine wood raw material, screen the wood chips with a length of 40-80 mm and less than 40 mm, and process the wood chips of different sizes into wood shavings;
[0059] (2) Set up a secondary vibrating screen at the wood shaving outlet of the ring-type long wood planer to screen out super-large and large shavings. Spray the activation modifier during the transportation of super-large and large shavings. During the intermediate storage process, it is activated and modified, and part of the lignin is removed;
[0060] The apertures of the secondary screens of the ring-type long product planer are 20 mm × 60 mm and 10 mm × 40 mm, respectively.
[0061] The activation modifier is composed of 1 part of sodium hydroxide (NaOH), calcium hydroxide (Ca(OH) 2 ) 0.6 parts, sodium sulfite (Na 2 SO 3 ) 5 parts, a composite solution consisting of 10 parts of ammonia solution and 80 parts of water; the mass content of the ammonia solution is 25%.
[0062] The ratio of...
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