CN1887551A - Production process of high density carbonized bamboo material - Google Patents
Production process of high density carbonized bamboo material Download PDFInfo
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- CN1887551A CN1887551A CN 200610021013 CN200610021013A CN1887551A CN 1887551 A CN1887551 A CN 1887551A CN 200610021013 CN200610021013 CN 200610021013 CN 200610021013 A CN200610021013 A CN 200610021013A CN 1887551 A CN1887551 A CN 1887551A
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- bamboo
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- silk
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 89
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 89
- 241001330002 Bambuseae Species 0.000 title claims abstract description 89
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 89
- 239000011425 bamboo Substances 0.000 title claims abstract description 89
- 239000000463 material Substances 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 16
- 239000002023 wood Substances 0.000 claims description 15
- 235000019198 oils Nutrition 0.000 claims description 11
- 238000005470 impregnation Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- 238000003763 carbonization Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 6
- 238000000197 pyrolysis Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000003672 processing method Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 3
- 239000007844 bleaching agent Substances 0.000 claims description 3
- 230000000740 bleeding effect Effects 0.000 claims description 3
- 235000021323 fish oil Nutrition 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 2
- 239000003292 glue Substances 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 239000002932 luster Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000004902 Softening Agent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 241000235388 Mucorales Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The present invention is production process of high density charred bamboo material, and solves the problems of high pressure made shaped material in inner stress, hardness, strength, color and power consumption. The production process includes the following steps: 1. making bamboo sheet without outmost layer and inside yellow layer; 2. cutting or rolling bamboo sheet; 3. charring inside charring tank at the pressure of 2-3 MPa and temperature of 100-300 deg.c for 2-3 hr; 4. soaking the charred bamboo material in glue; and 5. molding in mold at high pressure to cure and form. The high density charred bamboo material may be used in producing bamboo board or strip.
Description
Technical field:
The present invention is relevant with the method that bamboo is processed into composite material.
Background technology:
The existing method that bamboo is processed into composite material is that mao bamboon is split into the bamboo silk as described in the Chinese patent 99117809.2, and impregnation dress mould is solidified into section bar again behind the 10-100MPa high pressure after drying, and the glue content behind the bamboo silk impregnation is 6%-15%.Because generally all more than 50MPa, the internal stress that section bar produces is big, influences the cohesive force and the size stability of glue for the pressure of compression moulding.Because the bamboo silk arbitrarily loads when the dress mould, do not use according to the position and the classification in growth period of bamboo, its hardness, intensity, color and luster are inhomogeneous, influence product quality, and can't guarantee the unanimity of product hardness, color and luster in manufacturing process according to the local technology of different raw material adjustment.Because raw material is without desugar, degrease, the softening processing, section bar easily generation goes mouldy and is out of shape.
Existing strengthened bamboo material moulding mould special, by hydraulic press, patrix, internal mold, internal mold eject pump and reinforced guide plate is formed, and several locked mode pins are housed on the internal mold, and counterdie is the integral rigidity mould, and sidewall has several locked mode conduits.During work, the mao bamboon raw material is placed in the reinforced guide plate of internal mold inboard, the primer fluid press, patrix is pressed into internal mold with the mao bamboon raw material and makes its moulding, get some locked mode pins again and head into internal mold by the locked mode conduit, with the solid type of the bamboo wood of the type of being pressed into, make the press release again, start delivery eject pump with the shaped bamboo material that suppresses together with internal mold from bottom to top integral body eject the disengaging counterdie, and concentrate to enter to solidify in the baking oven and handle moulding, take out the locked mode pin then, unload core insert, finish the production process that bamboo wood is strengthened moulding.Because counterdie is an integral body, its inner chamber is connected with internal mold, and bamboo wood makes internal mold and counterdie closely cooperate in internal mold behind high-pressure molding, and need eject pump could eject it from counterdie, depanning cost height, and power consumption is big, and fragile mould and shaped bamboo material.Pin mould pin enters internal mold and directly contacts with bamboo wood and must brute force head into, and catheter directed owing to only having at counterdie, entering the internal mold side does not have guide pipe, operation inconvenience, and the locked mode pin is difficult for entering in the hole of another sidewall of internal mold, can not effectively make the solid type of bamboo wood of the type of being pressed into.After internal mold is ejected counterdie,, be easy to make the internal mold distortion, influence internal mold service life and bamboo wood quality because of the expansion of bamboo wood in the heat cure operation owing to have only the solid shape of row's locked mode pin.
Have a round corresponding with the piston rod of upper cylinder on the housiung separator of the support of the hydraulic press of existing work strengthening bamboo wood, the piston rod of the following oil cylinder of the axis of round under porose and platform on the projection line on the platform is corresponding.External mold is fixed on the platform, and its inner chamber is equipped with internal mold.The external mold bottom is porose corresponding with the hole on the platform, and during molding, following oil cylinder piston bar passes above-mentioned two holes and contacts with the internal mold bottom.Because the powerful pressure of upper cylinder forms bamboo wood and internal mold is closely contacted with external mold in internal mold, during depanning, the ejecting force of following oil cylinder must the very big frictional force that just can overcome inside and outside intermode, consumes energy greatly, and damage internal mold and interior bamboo wood thereof easily.Fixedly the mechanism of external mold also must make enough powerful, the manufacturing cost height.
The content of invention:
It is little to the purpose of this invention is to provide a kind of product strength, hardness height, internal stress, and excellent in stability, color and luster is adjustable, the processing method of easy to manufacture, high density carbonized bamboo material that power consumption is few.
The present invention is achieved in that
The processing method of high density carbonized bamboo material of the present invention comprises the steps:
(1) bamboo processing is become bamboo chip, removes blue or green layer and inside yellow layer,
(2) bamboo chip is split into bamboo silk or grind in length and breadth the bamboo sheet that links to each other,
(3) bamboo sheet or bamboo silk are placed in the carbonization jar, under 2-3MPa pressure, under the 100-300 ℃ of temperature pyrolysis charring 2-3 hour,
(4) with the bamboo sheet or the bamboo silk impregnation of pyrolysis charring,
(5) bamboo sheet behind the impregnation or bamboo silk are solidified into section bar in mould behind high pressure.
In the step (3) bamboo sheet or bamboo silk and stainless steel frame are bundled into bundle and put into the carbonization jar, put into steam and boost to 2.8MPa, every pressurize 20 minutes is arranged once gas by air bleeding valve, and the time is 1 minute, sends into steam again and is pressurized to 2.8MPa.
Between step (2), (3) softening step is arranged, its method is:
Bamboo silk or bamboo sheet are put into bating liquor boiled 1-2 hour under 80-100 ℃ of temperature, the proportioning of bating liquor is as follows, weight %,
Hydrogen peroxide 2-5
Sulfurous acid fish oil 2-3
Sodium bicarbonate 2-3
Bleaching powder 3-8
All the other are water,
The pH value of bating liquor is 8-15.
With bamboo sheet behind the impregnation or bamboo silk drying, make its water content≤8%.
In the step (5) through the bamboo wood of high-pressure molding in far-infrared heating stove, under 80-120 ℃ of temperature, be heating and curing 1-5 hour.
In step (1) or (2) with bamboo silk or bamboo sheet according to position, classification in growth period, enter later operation respectively.
To enter later operation again after bamboo silk that make in the step (2) or the bamboo sheet oven dry.
The mould that uses in the step (5) is flexible mould, flexible mould, comprise the cope match-plate pattern 1 that is connected with an oil cylinder 11, the internal mold 3 that is connected with fixed form 2, reinforced guide plate 4 is positioned on the internal mold 3, one sidewall of internal mold 3 has corresponding round 5 with fixed form 2, internal mold 3 is the spill of both ends open, its two side is connected with first collapsible form 6 with first fixed form 2 respectively, second fixed form 7 and first fixed form 2 are connected with press 8, place second collapsible form 9 therebetween successively, first collapsible form 6, internal mold 3, two inclined-planes of wedge shape second collapsible form 9 cooperate with a side of second fixed form 7 and first collapsible form 6 respectively.
Bamboo wood of the present invention earlier through the pyrolysis charring treatment step, can make product hardness increase before the impregnation pressurization, eliminates internal stress and can gain in strength and excellent in stability.And can adjust the pyrolysis charring parameter in 100-300 ℃ and 2-3 hour according to required color in this step makes product not need japanning to reach desirable natural colour.
With the softening desugar degrease of raw material, not only can prevent to go mouldy but also the bamboo fibre internal stress is reduced, increase the bonding force of product.The far heating, drying of raw material and finished product can not produce wet phenomenon in outer the doing, and avoids the product distortion, and is energy-conservation, free from environmental pollution.
Used flexible mould and hydraulic press are simple in structure, and be easy to manufacture, easy to operate, and the depanning power consumption is little, production efficiency height, good product quality.
Description of drawings:
Fig. 1 is the flexible mould structure chart.
Fig. 2 is the hydraulic press structure chart.
Fig. 3 is the A-A cutaway view of Fig. 2.
The specific embodiment:
Technological process of the present invention is as follows:
1, bamboo processing is grown up 0.4-2 rice, wide 1.4-2.4 centimetre, the bamboo chip of thick 1.2-2 millimeter removes the blue or green layer of 0.8-1 millimeter, and removes dead Huang and make product not contain cured and sugared part, and the arrival products with adhesive does not closely produce peels off phenomenon.With the bamboo chip sort merge, enter down operation respectively.
2, with filament grinding machine bamboo chip is ground the bamboo sheet that links in length and breadth and connect, make bamboo chip produce the gap, just porous is even for glue, and is bonding tight.
3, sterilization, desugar, degrease, softening, with hydrogen peroxide 2-5%, sodium bicarbonate 2-3%, bleaching powder 3-8%, sulfurous acid fish oil 2-3%, all the other are mixed with softening agent for water, bamboo wood is put into softening agent, under 80-100 ℃ of temperature poach 1-2 hour, make fibr tissue expand eliminate internal stress, degrease, deoil, sterilization.
4, oven dry makes bamboo sheet in the expansion after-contraction, requires moisture content to be lower than 8%, and product is flexible type and the bonding force of strengthening product not.
5, charring process process:
Earlier bamboo chip is bundled into size than bundle empty slightly smaller in the carbonization jar with a stainless steel pipe support, then stainless steel pipe support and material is packed in the carbonization jar together, tight jar on lid is put into steam, when treating that gauge pressure rises to 2.8MPa, is turned off steam.Descend as air pressure, need supply pressure.Drain time was 1 minute, and then sent into steam, was pressurized to 2.8MPa with air bleeding valve row jar inner vapor once in per 20 minutes.Every one tank material time of carbonization is about 2-3 hour.
Bamboo chip is white partially when going out jar, shows deficiency of time or insufficient pressure, and the bamboo chip color is dark partially, and expression overlong time or air pressure are too high.
6, bamboo wood is put into the impregnation basket, put into Jiao Chi and soaked 10 minutes, the ratio of phenol glue bonding agent and water is 1: 1 in the glue pond, and glue is entered in the bamboo fiber tissue, gel content is 15-20%, makes its gel content even, and is bonding tightr.
7, oven dry once more makes fiber get rid of moisture content fully, and typing is fully shunk in the hole, contains 8% moisture content.
8, compacting, used compound special hydraulic press must guarantee at 55MPa/cm
2Pressure work, it is complementary with flexible mould, enables to finish one action in 2-3 minute, unloads flexible mould and changes flexible mould again.With 600-700 mould turnover, a press output every day 25-30 cubic meter section bar.
30 holes are arranged on each mould.When press was pushed down die cover plate, key-bolt was tightly pushed down cover plate above the cover plate, and cover plate is pushed down section bar, when taking apart a die, with the electric screw sling cap of tightening up a screw, after the operation heating cure is eliminated internal stress fully after the warp let-off, loosen nut again, whole process only needed finish in 5 minutes.Unclamping 30 screw rods after the operation elimination internal pressure down, increase the benefit greatly, guarantee that product is indeformable.
9, infrared heating drying room operation sequence:
1, the mould and the material of compression moulding are sent into drying room with rail, and shut the drying room door.
2, automatic thermostat is transferred between 80 ℃-120 ℃.
3, close a main switch energising.
(table temperature), baking are 1-5 hour when 4, treating that indoor temperature reaches regulating and controlling temperature, and the startup exhaust fan was 2 minutes in every 15-20 minute, got rid of indoor humid air.
5, solidify afterwards, open the door, mould is pulled out drying room, screw off nut and take out finished product.
Claims (9)
1, the processing method of high density carbonized bamboo material comprises the steps:
(1) bamboo processing is become bamboo chip, removes blue or green layer and inside yellow layer,
(2) bamboo chip is split into bamboo silk or grind in length and breadth the bamboo sheet that links to each other,
(3) bamboo sheet or bamboo silk are placed in the carbonization jar, under 2-3MPa pressure, under the 100-300 ℃ of temperature pyrolysis charring 2-3 hour,
(4) with the bamboo sheet or the bamboo silk impregnation of pyrolysis charring,
(5) bamboo sheet behind the impregnation or bamboo silk are solidified into section bar in mould behind high pressure.
2, method according to claim 1, it is characterized in that in the step (3) that bamboo sheet or bamboo silk and stainless steel frame are bundled into bundle puts into the carbonization jar, put into steam and boost to 2.8MPa that every pressurize 20 minutes is arranged once gas by air bleeding valve, time is 1 minute, sends into steam again and is pressurized to 2.8MPa.
3, method according to claim 1 is characterized in that between step (2), (3) softening step being arranged, and its method is:
Bamboo silk or bamboo sheet are put into bating liquor boiled 1-2 hour under 80-100 ℃ of temperature, the proportioning of bating liquor is as follows, weight %,
Hydrogen peroxide 2-5
Sulfurous acid fish oil 2-3
Sodium bicarbonate 2-3
Bleaching powder 3-8
All the other are water,
The pH value of bating liquor is 8-15.
4, method according to claim 1 is characterized in that bamboo sheet behind the impregnation or bamboo silk drying are made its water content≤8%.
5, method according to claim 1 is characterized in that in the step (5) that bamboo wood through high-pressure molding in far-infrared heating stove, was heating and curing 1-5 hour under 80-120 ℃ of temperature.
6, method according to claim 1 is characterized in that in step (1) or (2) bamboo silk or bamboo sheet entering later operation respectively according to position, classification in growth period.
7, method according to claim 1 is characterized in that entering later operation again after the oven dry of the bamboo silk that will make in the step (2) or bamboo sheet.
8, method according to claim 1, it is characterized in that the mould that uses in the step (5) is flexible mould, flexible mould, comprise the cope match-plate pattern (1) that is connected with an oil cylinder (11), the internal mold (3) that is connected with first fixed form (2), reinforced guide plate (4) is positioned on the internal mold (3), one sidewall of internal mold (3) has corresponding round (5) with fixed form (2), internal mold (3) is the spill of both ends open, its two side is connected with first collapsible form (6) with first fixed form (2) respectively, second fixed form (7) and first fixed form (2) are connected with press (8), place second collapsible form (9) therebetween successively, first collapsible form (6), internal mold (3), two inclined-planes of wedge shape second collapsible form (9) cooperate with a side of second fixed form (7) and first collapsible form (6) respectively.
9, method according to claim 7, it is characterized in that porose (13) cooperate with collapsible form (9) on the platform (12) of support of the press that uses in the step (5) or the perpendicular wall, the piston rod (14) of second oil cylinder of installing on the corresponding platform in the center in hole (13) (12) top or following or the platform (10), some first oil cylinders (11) that are provided with along the axis of the internal mold of placing on the platform (3) are arranged on the crossbeam of the frame (16) above the platform (12), the piston rod (15) of first oil cylinder (11) is vertical with platform (12), and it vertically is projected on the platform of a side in hole (13).
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| CNB2006100210132A CN100408290C (en) | 2006-05-26 | 2006-05-26 | Production process of high density carbonized bamboo material |
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| CNB2006100210132A CN100408290C (en) | 2006-05-26 | 2006-05-26 | Production process of high density carbonized bamboo material |
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| CN1887551A true CN1887551A (en) | 2007-01-03 |
| CN100408290C CN100408290C (en) | 2008-08-06 |
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| CN101708618B (en) * | 2009-09-17 | 2011-06-29 | 周东华 | Method for processing bamboo sectional material |
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| CN107127856A (en) * | 2017-07-06 | 2017-09-05 | 赣州森泰竹木有限公司 | A kind of physical depth carbonization technique of fresh bamboo wood |
| CN107127856B (en) * | 2017-07-06 | 2019-02-22 | 赣州森泰竹木有限公司 | A kind of physical depth carbonization technique of fresh bamboo wood |
| CN108818795A (en) * | 2018-06-12 | 2018-11-16 | 阜南县猛发工艺品有限公司 | A method of heat treatment improves bamboo cane fungus-resistant with chemical treatment |
| CN111805672A (en) * | 2020-06-28 | 2020-10-23 | 贵州新锦竹木制品有限公司 | Treatment method of deep carbonized bamboo wood, product and application thereof |
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