CN1861905A - Mfg. method of non-glue fibre board - Google Patents
Mfg. method of non-glue fibre board Download PDFInfo
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- CN1861905A CN1861905A CN 200610049724 CN200610049724A CN1861905A CN 1861905 A CN1861905 A CN 1861905A CN 200610049724 CN200610049724 CN 200610049724 CN 200610049724 A CN200610049724 A CN 200610049724A CN 1861905 A CN1861905 A CN 1861905A
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- 239000000835 fiber Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000003292 glue Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 29
- 239000003054 catalyst Substances 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 8
- 239000003513 alkali Substances 0.000 claims abstract description 6
- 238000007731 hot pressing Methods 0.000 claims description 29
- 239000002994 raw material Substances 0.000 claims description 29
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000002023 wood Substances 0.000 claims description 15
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 13
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 13
- 241001330002 Bambuseae Species 0.000 claims description 13
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 13
- 239000011425 bamboo Substances 0.000 claims description 13
- 230000007062 hydrolysis Effects 0.000 claims description 11
- 238000006460 hydrolysis reaction Methods 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 9
- 239000012188 paraffin wax Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000002940 repellent Effects 0.000 claims description 4
- 239000005871 repellent Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000004078 waterproofing Methods 0.000 claims description 4
- 241000196324 Embryophyta Species 0.000 claims description 3
- 230000029087 digestion Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000003153 chemical reaction reagent Substances 0.000 abstract 2
- 230000001427 coherent effect Effects 0.000 abstract 1
- 238000002955 isolation Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000011094 fiberboard Substances 0.000 description 7
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical class O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 5
- 230000008961 swelling Effects 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000002585 base Substances 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 235000019256 formaldehyde Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 150000002972 pentoses Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
This invention relates to the preparation of the no glue fiber plate which is suit to apply to the middle and high fiber plate production line. The technology problem needed to be solved is that the hydrolyzation of materials and the separated process of thermal grind fiber can be coherent, and this can be realize in one equipment without addition of special high temperature and pressure steam device. This method includes the processes as fellows: 1) Dehydrolyzation, isolation of fiber and addition of water-proof reagent. The catalyst solution is directly putting in the active state preheating jar of hot grind machine with materials by pressure pump, and the output pressure of pressure pump is higher than the steam pressure of preheating jar of hot grind machine. The materials is softened and hydrolyzed with the treatment of high temperature steam and acid or alkali catalysts. The materials after hydrolyzed are separated to wet fibre by the treatment of hot grind, and applied to paraffins water-proof reagent. 2) Drying, paving. 3) Pre-pressure. 4) Heat pressing.
Description
Technical field
The present invention relates to wood (bamboo) material or herbaceous plant is raw material production non-glue fibre board field, specifically is a kind of new non-glue fibre board manufacture method, is particularly suitable for using on the middle and higher density fibreboard production line.
Background technology
Chinese invention patent publication number CN85105958A discloses a kind of " being produced the method for synthetic by cellulosic material ", it is put into autocratic pretreatment unit (high-pressure bottle) to raw material earlier and carries out the high-temperature high-pressure steam processing, make the hemicellulose degraded in the raw material components and be hydrolyzed into water-soluble substances, after treatment raw material is separated the fine fiber that becomes again under the condition that does not apply synthetic resin, carries out drying then, mats formation, operation such as hot pressing makes non-glue fibre board.Units such as the domestic She Kou of Shenzhen trade and investment promotion wood-based plate Technew SA once used this patented technology to produce non-glue fibre board.Facts have proved that because the method is compared with (height) density production line in the traditional dry method, increase special high-temperature high-pressure steam pretreatment unit before defibrator process, this not only increases the investment of equipment, but also increase high steam energy consumption.This pretreatment unit directly constitutes the bottleneck of production efficiency, because this device is to carry out service intermittent, is difficult to satisfy the ordinary production needs of high productive capacity with an equipment.In addition, when pretreatment unit under high pressure spurted (explosion) raw material, not only the spout galling seriously very easily damaged equipment, causes serious noise pollution but also can produce huge shriek.Not enough and some other reason owing to above existence, this patented technology is stopped use at home already.
Summary of the invention
The technical issues that need to address of the present invention are, overcome the existing deficiency of prior art, a kind of special High Temperature High Pressure digesting apparatus that do not increase is provided, raw material hydrolysis and defibrator process fiber separation two steps can be linked up, in an equipment, realize workable new non-glue fibre board manufacture method.
The non-glue fibre board manufacture method on the middle and higher density fibreboard production line, used of being suitable for of the present invention, according to following steps:
1) hydrolysis, fiber separation and add waterproofing agent: catalyst solution directly squeezed into compression pump be equipped with in raw material and the in running order defibrator preheating cylinder, the output pressure of compression pump is greater than the steam pressure of defibrator preheating cylinder; Raw material softens and hydrolysis process under the effect of high-temperature steam and catalyst acid or alkali; Raw material after the hydrolysis is carried out defibrator process again be separated into wet fiber, and apply paraffin water repellent; In this stage, the part hemicellulose when raw material is softened in the raw material and some rudimentary carbohydrate are hydrolyzed the formation free sugar and the furfural class is main low molecule organic matter.
2) dry, mat formation: wet fiber is carried out pneumatic conveying drying, and fiber is mated formation by middle and higher density Fibreboard Production common process;
3) precompressed: drying, the fiber of mating formation are got shaping slab by the precompressed of middle and higher density Fibreboard Production common process;
4) hot pressing: use common process, shaping slab is carried out hot pressing get product on hot press.Free pentose that this step forms the front hydrolysis and pentosan are hydrolyzed into furfural when hot pressing, furfural produces condensation reaction with lignin again and generates sticky matter and be bonded into plate.
The present invention utilizes the high temperature and high pressure environment of defibrator preheating cylinder dexterously, the hydrolysis originally carried out separately and defibrator process separating step is linked up realize in an equipment (defibrator), makes that whole technology is more reasonable, production cost decline.
As preferably, described 1) and 2) between the step, set up cyclone separator and wet fiber carried out predrying, with effective eliminating steam and liquid water, reduce energy consumption for drying, improve drying efficiency, prevent the corrosion of drying duct.
As preferably, described boiling temperature is 168 ℃～185 ℃, and digestion time is 1～3 minute (suitable at defibrator preheating cylinder traveling time with raw material); Described catalyst-acid or alkali are H
3PO
4, HCL, H
2SO
4, a kind of among the NaOH, catalyst amount is 0.2～3.5% of a raw material oven dry weight; The paraffin water repellent applied amount is 0.5～2.0% of a raw material oven dry weight; Described raw material is from timber, bamboo wood, herbaceous plant one or more; Dry back fiber moisture is 5～20%.
The acid of catalyst can be discharged with steam in the fiber drying process, and the alkali of catalyst can solve the catalyst residue problem preferably by the control addition.
As preferably, the concentration of catalyst-acid or aqueous slkali is 5～15%, and the addition of catalyst solution is 0.5～1.2% of a raw material oven dry weight; Dry back fiber moisture is 8～15%.
In order in heat-press step, in time to discharge large quantity of moisture, shorten hot pressing time effectively, reducing percent defective, 5) in the hot pressing, shaping slab is respectively placed stratum reticulare or porous plate up and down.Stratum reticulare or porous plate also can directly be fixed on the pressing plate of hot press.
Stratum reticulare can be individual layer or bilayer, and double-deck internal layer is 36～46 order fine-structure meshes, and skin is 14～22 order coarse nets, or internal layer is that the aperture is the expanded metal of 2.0～2.5mm, and skin is 14～22 order coarse nets; As preferably, stratum reticulare is an individual layer, and the aperture is 2.0～2.5mm, and has the porous plate of exhaust passage structure.
The hot pressing temperature of heat pressing process is 170～220 ℃, and hot pressing pressure is 2.0～4.0MPa; Hot pressing time is 20～60s/mm.
As preferably, described hot pressing temperature is 190～210 ℃; Hot pressing pressure is 2.5～3.5MPa, and hot pressing time is 30～45s/mm.
Description of drawings
Fig. 1 is cyclone separator position view on the middle and higher density fibreboard production line.
The specific embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1: this example is raw material with timber, produces no glue high density fiberboard on existing medium density fiber board assembly line.
1) hydrolysis, fiber separation and add waterproofing agent: wood chip is packed in the defibrator preheating cylinder with feed auger, and to feed high-pressure steam and concentration be catalyst-HCL solution of 5%, under the effect of high-temperature steam and catalyst, soften and hydrolysis process.At this moment, the steam pressure of preheating cylinder is 0.8MPa, and digestion time is 2min, and the applied amount of catalyst HCL is 0.5% of a raw material oven dry weight; The raw material that will be hydrolyzed in preheating cylinder and handle carries out defibrator process again and is separated into wet fiber, and applies the paraffin molten waterproofing agent of raw material oven dry weight 1.5%;
2) dry and mat formation: the wet fiber that defibrator process is good adopts the chimneying seasoning to carry out drying, and moisture content is controlled at 10%;
3) precompressed: mat formation and precompressed, its technology is identical with technology during existing medium density fibre board (MDF) is produced, shaping slab;
4) hot pressing: at heating platen double-deck exhaust net is installed up and down, internal layer is 40 purpose stainless steel wire fine-structure meshes, and skin is 20 purpose stainless steel wire coarse nets; The hot pressing temperature of heat pressing process is 200 ℃, and hot pressing pressure is 3.0MPa; Hot pressing time is 30s/mm, gets the burr panel products.
The burr panel products is carried out cutting edge in length and breadth and sanding (hair plates thickness is 9.5mm), test afterwards and grade and the finished product warehouse-in.
Product thickness: 8.0mm; Density: 0.94g/cm
3MOR: 42MPa; Elastic modelling quantity: 3670MPa; Plane tensile strength: 1.25MPa; Thickness swelling rate: 10%; Burst size of methanal: 0.02mg/100g (perforation-colorimetric method).
Properties of product reach the common template index request of floor base material fiberboard industry standard (LY/T1611-2003) regulation.
Embodiment 1～12 in the table 1, listing wood (bamboo) material of making catalyst with HCL does not have the physical and mechanical property list of glue high density fiberboard, embodiment 13～20 in the table 2, list the physical and mechanical property list that wood (bamboo) material of making catalyst with NaOH does not have the glue high density fiberboard.Its properties of product all reach the indoor template physical and mechanical property index request of medium density fibre board (MDF) standard (GB/T11718-1999) regulation.
Wood (bamboo) material that table 1 is made catalyst with HCL does not have the physical and mechanical property list of glue high density fiberboard
| Embodiment | Raw material | HCL applied amount % | Thickness of slab mm | Fiber moisture % | Paraffin applies inner % | Heat pressing process | Physical and mechanical property | ||||||
| Temperature ℃ | Pressure MPa | s/ mm | Density g.cm -3 | MOR MPa | Elastic modelling quantity MPa | Plane tensile strength MPa | Thickness swelling rate % | ||||||
| 1 | Timber | 0.5 | 8 | 10 | 1.5 | 210 | 3.0 | 30 | 0.94 | 42.0 | 3670 | 1.25 | 10.0 |
| 2 | Timber | 0.8 | 8 | 12 | 1.2 | 190 | 2.5 | 30 | 1.00 | 45.5 | 3865 | 1.36 | 13.5 |
| 3 | Timber | 0.3 | 8 | 8 | 2.0 | 210 | 3.0 | 40 | 0.95 | 25.0 | 2800 | 0.65 | 14.5 |
| 4 | Timber | 0.5 | 10 | 10 | 1.5 | 200 | 3.0 | 35 | 0.98 | 40.2 | 4100 | 1.02 | 12.0 |
| 5 | Timber | 0.8 | 10 | 12 | 1.2 | 190 | 2.5 | 35 | 0.97 | 39.6 | 3800 | 0.95 | 11.8 |
| 6 | Timber | 0.3 | 10 | 8 | 2.0 | 210 | 3.0 | 45 | 0.98 | 23 | 2700 | 0.52 | 11.6 |
| 7 | Timber | 0.5 | 12 | 10 | 1.5 | 210 | 3.0 | 45 | 0.96 | 36.0 | 3800 | 0.92 | 11.2 |
| 8 | Timber | 0.8 | 12 | 12 | 1.2 | 190 | 2.5 | 45 | 0.97 | 35.0 | 3850 | 0.95 | 11.8 |
| 9 | Timber | 0.3 | 12 | 8 | 2.0 | 200 | 3.0 | 55 | 0.96 | 26.5 | 2850 | 0.55 | 11.6 |
| 10 | Bamboo wood | 0.5 | 8 | 10 | 1.5 | 210 | 3.0 | 30 | 0.98 | 46.7 | 3952 | 1.06 | 12.5 |
| 11 | Bamboo wood | 0.8 | 8 | 12 | 1.2 | 190 | 2.5 | 30 | 0.98 | 58.2 | 4632 | 0.56 | 13.8 |
| 12 | Bamboo wood | 0.3 | 8 | 8 | 2.0 | 210 | 3.0 | 40 | 0.97 | 26.5 | 2980 | 0.57 | 12.2 |
Wood (bamboo) material that table 2 is made catalyst with NaOH does not have the physical and mechanical property list of glue high density fiberboard
| Embodiment | Raw material | NaOH applied amount % | Thickness of slab mm | Fiber moisture % | Paraffin applied amount % | Heat pressing process | Physical and mechanical property | ||||||
| Temperature ℃ | Pressure MPa | s/ mm | Density g.cm -3 | MOR MPa | Elastic modelling quantity MPa | Plane tensile strength MPa | Thickness swelling rate % | ||||||
| 13 | The water material | 0.8 | 8 | 10 | 1.5 | 210 | 3.0 | 35 | 1.05 | 43.5 | 3920 | 1.38 | 8.9 |
| 14 | Timber | 1.0 | 8 | 10 | 1.2 | 190 | 2.5 | 35 | 1.02 | 44.2 | 3900 | 1.40 | 11.5 |
| 15 | Timber | 1.5 | 8 | 9 | 2.0 | 210 | 3.0 | 30 | 0.97 | 42.0 | 3850 | 1.29 | 8.2 |
| 16 | Timber | 0.5 | 10 | 11 | 1.5 | 200 | 3.0 | 35 | 0.96 | 35.5 | 3658 | 1.10 | 12.0 |
| 17 | Timber | 0.8 | 10 | 11 | 1.2 | 190 | 2.5 | 35 | 0.97 | 37.4 | 3700 | 0.98 | 11.6 |
| 18 | Bamboo wood | 0.5 | 8 | 10 | 1.5 | 210 | 3.0 | 35 | 1.05 | 38.9 | 3860 | 0.85 | 12.7 |
| 19 | Bamboo wood | 0.8 | 8 | 10 | 1.2 | 190 | 2.5 | 35 | 1.03 | 41.2 | 4200 | 1.23 | 11.2 |
| 20 | Bamboo wood | 1.0 | 8 | 10 | 2.0 | 210 | 3.0 | 40 | 1.02 | 43.8 | 4250 | 1.28 | 9.1 |
Use the embodiment of predrying step, see Fig. 1.To the pneumatic conveying drying pipeline 3 of cyclone separator 2, set up cyclone separator 4 in the combustion chamber 1 of production line, the wet fiber 5 from defibrator is carried out predrying, all the other steps are with embodiment 1.
Claims (10)
1, a kind of non-glue fibre board manufacture method of on the middle and higher density fibreboard production line, using of being suitable for, according to following steps:
1) hydrolysis, fiber separation and add waterproofing agent: catalyst solution directly squeezed into compression pump be equipped with in raw material and the in running order defibrator preheating cylinder, the output pressure of compression pump is greater than the steam pressure of defibrator preheating cylinder; Raw material softens and hydrolysis process under the effect of high-temperature steam and catalyst acid or alkali; Raw material after the hydrolysis is carried out defibrator process again be separated into wet fiber, and apply paraffin water repellent;
2) dry, mat formation: wet fiber is carried out pneumatic conveying drying, and fiber is mated formation by middle and higher density Fibreboard Production common process;
3) precompressed: drying, the fiber of mating formation are got shaping slab by the precompressed of middle and higher density Fibreboard Production common process;
4) hot pressing: shaping slab is hot pressed into plate on hot press.
2, non-glue fibre board manufacture method according to claim 1 is characterized in that described 1) and 2) between the step, set up cyclone separator (4) and carry out predrying to wet fiber.
3, non-glue fibre board manufacture method according to claim 1 and 2 is characterized in that described boiling temperature is 168 ℃～185 ℃, and digestion time is 1～3 minute; Described catalyst-acid or alkali are H
3PO
4, HCL, H
2SO
4, a kind of among the NaOH, catalyst amount is 0.2～3.5% of a raw material oven dry weight; The paraffin water repellent applied amount is 0.5～2.0% of a raw material oven dry weight; Described raw material is from timber, bamboo wood, herbaceous plant one or more; Dry back fiber moisture is 5～20%.
4, non-glue fibre board manufacture method according to claim 2, the concentration that it is characterized in that described catalyst-acid or aqueous slkali is 5～15%, the addition of catalyst solution is 0.5～1.5% of a raw material oven dry weight; Dry back fiber moisture is 8～15%.
5, non-glue fibre board manufacture method according to claim 1 and 2 is characterized in that: 5) in the hot pressing, shaping slab is respectively placed stratum reticulare or porous plate up and down.
6, non-glue fibre board manufacture method according to claim 3 is characterized in that: 5) in the hot pressing, shaping slab is respectively placed stratum reticulare or porous plate up and down.
7, non-glue fibre board manufacture method according to claim 4 is characterized in that: 5) in the hot pressing, shaping slab is respectively placed stratum reticulare or porous plate up and down.
8, non-glue fibre board manufacture method according to claim 3, the hot pressing temperature that it is characterized in that described heat pressing process is 170～220 ℃, hot pressing pressure is 2.0～4.0MPa; Hot pressing time is 20～60s/mm.
9, non-glue fibre board manufacture method according to claim 4, the hot pressing temperature that it is characterized in that described heat pressing process is 170～220 ℃, hot pressing pressure is 2.0～4.0MPa; Hot pressing time is 20～60s/mm.
10, non-glue fibre board manufacture method according to claim 5, the hot pressing temperature that it is characterized in that described heat pressing process is 170～220 ℃, hot pressing pressure is 2.0～4.0MPa; Hot pressing time is 20～60s/mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610049724 CN1861905A (en) | 2006-03-07 | 2006-03-07 | Mfg. method of non-glue fibre board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610049724 CN1861905A (en) | 2006-03-07 | 2006-03-07 | Mfg. method of non-glue fibre board |
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| Publication Number | Publication Date |
|---|---|
| CN1861905A true CN1861905A (en) | 2006-11-15 |
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| CN 200610049724 Pending CN1861905A (en) | 2006-03-07 | 2006-03-07 | Mfg. method of non-glue fibre board |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894667A (en) * | 2010-07-02 | 2010-11-24 | 湖南广信电工科技股份有限公司 | One-step molding support member production process |
| CN104149154A (en) * | 2014-08-13 | 2014-11-19 | 中国林业科学研究院木材工业研究所 | Manufacturing method for glue-free electromagnetic shielding fiber board |
| CN106914967A (en) * | 2017-03-02 | 2017-07-04 | 浙江农林大学 | A kind of preparation method without glue recombining bamboo and without glue recombining bamboo |
| CN107756587A (en) * | 2017-09-07 | 2018-03-06 | 南京林业大学 | A kind of manufacture method and manufacturing equipment of no glue water-resistant type fiberboard |
| CN113910403A (en) * | 2020-07-08 | 2022-01-11 | 中国科学院大连化学物理研究所 | Method for preparing environment-friendly biological board by taking waste rubber wood as raw material |
| CN113910396A (en) * | 2020-07-08 | 2022-01-11 | 中国科学院大连化学物理研究所 | Preparation method of flame-retardant environment-friendly high-strength plate |
-
2006
- 2006-03-07 CN CN 200610049724 patent/CN1861905A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894667A (en) * | 2010-07-02 | 2010-11-24 | 湖南广信电工科技股份有限公司 | One-step molding support member production process |
| CN104149154A (en) * | 2014-08-13 | 2014-11-19 | 中国林业科学研究院木材工业研究所 | Manufacturing method for glue-free electromagnetic shielding fiber board |
| CN106914967A (en) * | 2017-03-02 | 2017-07-04 | 浙江农林大学 | A kind of preparation method without glue recombining bamboo and without glue recombining bamboo |
| CN107756587A (en) * | 2017-09-07 | 2018-03-06 | 南京林业大学 | A kind of manufacture method and manufacturing equipment of no glue water-resistant type fiberboard |
| CN113910403A (en) * | 2020-07-08 | 2022-01-11 | 中国科学院大连化学物理研究所 | Method for preparing environment-friendly biological board by taking waste rubber wood as raw material |
| CN113910396A (en) * | 2020-07-08 | 2022-01-11 | 中国科学院大连化学物理研究所 | Preparation method of flame-retardant environment-friendly high-strength plate |
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Open date: 20061115 |