CN102179855A - High-strength structural artificial board and manufacturing method thereof - Google Patents
High-strength structural artificial board and manufacturing method thereof Download PDFInfo
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- CN102179855A CN102179855A CN2011100866655A CN201110086665A CN102179855A CN 102179855 A CN102179855 A CN 102179855A CN 2011100866655 A CN2011100866655 A CN 2011100866655A CN 201110086665 A CN201110086665 A CN 201110086665A CN 102179855 A CN102179855 A CN 102179855A
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Abstract
The invention discloses a high-strength structural artificial board and a manufacturing method thereof. The manufacturing method comprises the following steps of: horizontally cutting an industrial hemp stalk into hemp stalk segments with the lengths of 40-50 cm; then longitudinally splitting the hemp stalk segments from an axle center; then regulating the water ratio of the hemp stalk segments to 80-100 percent, and nondestructively flattening the hemp stalk segments; and then manufacturing the structural artificial board through assembly, sizing, hot pressing and thermal refining at constant temperature and humidity. In the invention, the structural artificial board is initiatively manufactured by utilizing the characteristics of high strength, porosity and low density of the industrial hemp stalk; compared with a similar wooden product, the product disclosed by the invention has the advantages of low density, high strength and good load-bearing property; in addition, by implementing the technology disclosed by the invention, not only the wood resources is outstandingly saved and the ecological environment is protected, but also the wastes are changed into valuables and a new way for the application of industrial hemps is provided; and the invention is beneficial to promoting the further development of an industrial hemp industry and has good social benefit and economic benefit.
Description
Technical field
The invention belongs to the wood-based plate processing technique field, being specifically related to a kind of is the high-strength structure wood-based plate of raw material preparing with the industrial hemp stalk.Simultaneously, the invention still further relates to the manufacture method of this high-strength structure wood-based plate.
Background technology
Hemp is wooden herbaceous plant, belongs to Angiospermae, Magnoliatae, and Hamamelidae Hamamelididae, Urticales, Cannabaceae, Cannabis, formal name used at school are Cannabis sativa L., popular name Chinese fiber crops, cold fiber crops, hemp, the male plant of hemp etc., its kind has about 150." the United Nations forbids llicit traffic in narcotic drugs and Convention on Psychotropic Substances " of promulgation in 1988 clearly stipulates: contain THC (THC)＜0.3% in the hemp plant; not possessed the THC of extraction toxic component is worth; there is not the value of directly sucking as drugs; this hemp kind---the industrial hemp of specializing in industrial use can be carried out large-scale planting and industrialized utilization.At present industrial hemp is widely used its bast fiber part and seed portion, is mainly used in and weaves and food industry; And the industrial hemp stalk is its discarded object, is not still rationally utilized at present, by on-site incineration.China is that industrial hemp is mainly planted one of state in the world, and 2009 cultivated areas of being only the industrial hemp in Yunnan Province just reach 100,000 mu, are limited to 3～6 months growth period, and every mu of ground can produce 1.5～2 tons of hemp stalk.In addition, the extensive use in military, civilian industry of hemp skin and hempseed, be subjected to showing great attention to of the Party Central Committee, stimulating the fast development of hemp plant husbandry, the industrial hemp stalk cultivated area in Yunnan Province in 2010 has just reached 300,000 mu, and estimates that the cultivated area of the industrial hemp stalk in the whole nation in 2015 will reach 1,000 ten thousand mu.To produce 1500～2,000 ten thousand tons hemp stalk when the time comes,, just can produce 750-1000 ten thousand m if can utilize in these hemp stalk half to make wood-based plate
3Wood-based plate (10%-13% that is about China's Wood-based Panel Production total amount in 2006), can save ten thousand mu of the forest reserves 1000-1400 every year, also can reduce hemp stalk and burn the environmental pollution cause.Be not only twice laid, can also bring into play the performance advantage of industrial hemp stalk, improve the properties of product of artificial board.Have tangible ecological benefits and economic benefit.
The epidermis intensity height of industrial hemp stalk, and hemp stalk density is low, at 0.25g/cm
3About, only have 1/3～1/2(of density of wood to refer to be usually used in the wood raw material that wood-based plate is made).(diameter is 5～8cm), and is cylindrical, and is how that this materials processing is smooth, and the characteristic of not destroying raw material itself just becomes the technical barrier that utilizes the industrial hemp stalk to prepare structural material but its footpath level is little.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art; providing a kind of is the high-strength structure wood-based plate that primary raw material processing obtains with the industrial hemp stalk, expand industrial hemp application approach, preserve the ecological environment, promote further developing of industrial hemp industry.
The present invention also aims to provide a kind of method of making described high-strength structure wood-based plate.
Purpose of the present invention is achieved through the following technical solutions.
Except as otherwise noted, percentage of the present invention is percetage by weight.
A kind of high-strength structure wood-based plate, it is characterized in that: earlier with the long hemp stalk section of the transversal one-tenth 40～50cm of industrial hemp stalk, again the hemp stalk section is vertically rived from the place, axle center, regulate hemp stalk section moisture content to 80～100% afterwards, and the hemp stalk section be can't harm flattening, make after assembly, applying glue, hot pressing, constant temperature and humidity modifier treatment, wherein, the applying glue total amount of every laminate base upper and lower surface is 180～300g/m again
2
Described glue is selected from a kind of in Lauxite, phenolic resins, cyanurotriamide modified urea resin, isocyanates or the natural polymers.
Preferred bean gum of described natural polymers or amylan.
Described hot pressing is selected from a kind of in flat-press process, die pressing, extrusion, steam injection pressing, high frequency hot pressing or the vacuum hotpressing.
Make the method for described high-strength structure wood-based plate, may further comprise the steps:
(1) raw material is handled: with the long hemp stalk section of the transversal one-tenth 40～50cm of industrial hemp stalk, again the hemp stalk section is vertically rived from the place, axle center, the hemp stalk section is carried out humidification to be handled, making its moisture content is 80～100%, then 80～120 ℃ of temperature, under pressure 2.5～3.0MPa condition, it be can't harm flattening handle;
(2) sanding and drying: the hemp stalk section sanding after will flattening is fixed thick, makes the wood chip of thickness 5～8mm, and is that to be dried to moisture content under 100～120 ℃ of conditions be 5～8% in temperature;
(3) gluing and assembly: wood chip is combined into the breadth after dryer sizing of required specification, and the applying glue total amount of every laminate base upper and lower surface is 180～300g/m
2Carry out assembly according to same direction or vertical symmetry principle again, making density is 0.65～0.85g/cm
3, thickness is the sheet material of 10～30mm;
(4) hot pressing: 90～120 ℃ of temperature, under pressure 1.5～5.0MPa condition to sheet material hot pressing, hot pressing time 1.0～2.0min/mm;
(5) sheet material post processing: the sheet material that hot pressing is good places constant temperature and humidity processing 48h under 25～30 ℃ of temperature, humidity 50～60% conditions, promptly obtains required high-strength structure wood-based plate.
With respect to prior art, the present invention has the following advantages: initiative land productivity recruitment sparetime university hemp stalk intensity height, porous, low density characteristics are come the manufacturing structure wood-based plate, specifically comprise integrated timber, veneer level material and core-board.Compare with similar wooden structures panel products, this product has the characteristic that density is low, intensity is high, load-bearing property is good, can be used for preparing fields such as furniture, body of wall, timber, packing case.The enforcement of this technology can not only significantly be saved timber resources, be preserved the ecological environment, and turns waste into wealth, and for the application of industrial hemp provides new approach, helps to promote further developing of industrial hemp industry, has good social benefit and economic benefit.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiment is not limited to the technical solution.Anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, be equal to according to the solution of the present invention and inventive concept thereof and replace or change, all should be encompassed in protection scope of the present invention.
Embodiment 1 preparation industrial hemp stalk core-board
Utilize briar with the long hemp stalk section of the transversal one-tenth 40～50cm of industrial hemp stalk, again the hemp stalk section is vertically rived from the place, axle center, the hemp stalk section is carried out humidification to be handled, making its moisture content is 80%, after utilize hot press 120 ℃ of temperature again, under the pressure 3.0MPa condition, it is flattened processing, flawless, slight crack etc. influence the damage generation of industrial hemp bar intensity, promptly harmless the flattening in the industrial hemp bar after guaranteeing to flatten.It is fixed thick to utilize belt sander to carry out sanding the hemp stalk section after flattening, and makes the wood chip that thickness is 5mm, and to utilize the constant temperature and humidity drying machine be that under 100 ℃ of conditions hemp stalk to be dried to moisture content be 5～8% in temperature.Wood chip is combined into utilize behind the breadth of 2440 * 1220mm size and drenches the glue machine and carry out applying glue, used adhesive is a urea-formaldehyde resin adhesive, and the applying glue total amount of every laminate base upper and lower surface is 180g/m
2Carry out assembly according to the vertical symmetry principle, making density is 0.65g/cm
3, thickness is the sheet material of 10mm.90 ℃ of hot pressing temperatures, hot pressing time 2.0min/mm carries out the sheet material preparation under the hot pressing pressure 1.5MPa condition.Sheet material is carried out the constant temperature and humidity processing of 48h under 25～30 ℃ of temperature, humidity 50～60% conditions, performance test is carried out to sheet material in the back, and test result is shown in Table 1.
Embodiment 2
Repeat embodiment 1, have following difference: the moisture content 90% behind the hemp stalk section humidification 100 ℃ of temperature, can't harm under the pressure 3.5MPa condition to flatten and handles; The applying glue total amount of every laminate base upper and lower surface is 240 g/m
2Panel density 0.75g/cm
3, thickness is 15mm; The hot pressing condition of sheet material is: 110 ℃ of hot pressing temperatures, and hot pressing time 1.5min/mm, hot pressing pressure 3.5MPa. test result is shown in Table 1.
Embodiment 3
Repeat embodiment 1, have following difference: the moisture content 100% behind the hemp stalk section humidification can't harm to flatten under 120 ℃ of conditions of temperature and handles; The applying glue total amount of every laminate base upper and lower surface is 300g/m
2Panel density 0.85g/cm
3, thickness is 20mm; The hot pressing condition of sheet material is: 120 ℃ of hot pressing temperatures, and hot pressing time 2.0min/mm, hot pressing pressure 5.0MPa. test result is shown in Table 1.
Embodiment 4 preparation industrial hemp stalk laminated timbers
Repeat embodiment 1, have following difference: carry out assembly according to same direction, test result is shown in Table 1.
Embodiment 5
Repeat embodiment 2, have following difference: carry out assembly according to same direction, test result is shown in Table 1.
Embodiment 6
Repeat embodiment 3, have following difference: carry out assembly according to same direction, test result is shown in Table 1.
Embodiment 7
Repeat embodiment 1, have following difference: carry out assembly according to same direction, used adhesive is a phenolic resin adhesive, and the applying glue total amount of every laminate base upper and lower surface is 180g/m
2Test result is shown in Table 1.
Embodiment 8
Repeat embodiment 2, have following difference: carry out assembly according to same direction, used adhesive is a phenolic resin adhesive, and the applying glue total amount of every laminate base upper and lower surface is 220g/m
2Test result is shown in Table 1.
Embodiment 9
Repeat embodiment 3, have following difference: carry out assembly according to same direction, used adhesive is a phenolic resin adhesive, and the applying glue total amount of every laminate base upper and lower surface is 260g/m
2Test result is shown in Table 1.
Claims (5)
1. high-strength structure wood-based plate, it is characterized in that: earlier with the long hemp stalk section of the transversal one-tenth 40～50cm of industrial hemp stalk, again the hemp stalk section is vertically rived from the place, axle center, regulate hemp stalk section moisture content to 80～100% afterwards, and the hemp stalk section be can't harm flattening, make after assembly, applying glue, hot pressing, constant temperature and humidity modifier treatment, wherein, the applying glue total amount of every laminate base upper and lower surface is 180～300g/m again
2
2. high-strength structure wood-based plate according to claim 1 is characterized in that: described glue is selected from a kind of in Lauxite, phenolic resins, cyanurotriamide modified urea resin, isocyanates or the natural polymers.
3. high-strength structure wood-based plate according to claim 2 is characterized in that: described natural polymers is bean gum or amylan.
4. high-strength structure wood-based plate according to claim 1 is characterized in that: described hot pressing is selected from a kind of in flat-press process, die pressing, extrusion, steam injection pressing, high frequency hot pressing or the vacuum hotpressing.
5. make the method for the described high-strength structure wood-based plate of claim 1, may further comprise the steps:
(1) raw material is handled: with the long hemp stalk section of the transversal one-tenth 40～50cm of industrial hemp stalk, again the hemp stalk section is vertically rived from the place, axle center, the hemp stalk section is carried out humidification to be handled, making its moisture content is 80～100%, then 80～120 ℃ of temperature, under pressure 2.5～3.0MPa condition, it be can't harm flattening handle;
(2) sanding and drying: the hemp stalk section sanding after will flattening is fixed thick, makes the wood chip of thickness 5～8mm, and is that to be dried to moisture content under 100～120 ℃ of conditions be 5～8% in temperature;
(3) gluing and assembly: wood chip is combined into the breadth after dryer sizing of required specification, and the applying glue total amount of every laminate base upper and lower surface is 180～300g/m
2Carry out assembly according to same direction or vertical symmetry principle again, making density is 0.65～0.85g/cm
3, thickness is the sheet material of 10～30mm;
(4) hot pressing: 90～120 ℃ of temperature, under pressure 1.5～5.0MPa condition to sheet material hot pressing, hot pressing time 1.0～2.0min/mm;
(5) sheet material post processing: the sheet material that hot pressing is good places constant temperature and humidity processing 48h under 25～30 ℃ of temperature, humidity 50～60% conditions, promptly obtains required high-strength structure wood-based plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110086665 CN102179855B (en) | 2011-04-07 | 2011-04-07 | High-strength structural artificial board and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110086665 CN102179855B (en) | 2011-04-07 | 2011-04-07 | High-strength structural artificial board and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN102179855A true CN102179855A (en) | 2011-09-14 |
| CN102179855B CN102179855B (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110086665 Expired - Fee Related CN102179855B (en) | 2011-04-07 | 2011-04-07 | High-strength structural artificial board and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108012468A (en) * | 2017-12-21 | 2018-05-08 | 四川九洲电器集团有限责任公司 | A kind of lamination of cyanate ester resin quartz fabric multilayer board and processing technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129223A (en) * | 1997-10-31 | 1999-05-18 | Misawa Homes Co Ltd | Wood chip cement molding, wood chip adhesion molding, wood-like molding and manufacture thereof |
| US6518387B2 (en) * | 1999-07-29 | 2003-02-11 | Iowa State University Research Foundation, Inc. | Soybean-based adhesive resins and composite products utilizing such adhesives |
| WO2006076814A1 (en) * | 2005-01-21 | 2006-07-27 | 9119-3656 Quebec Inc. | Wood and non-wood plant fibers hybrid composition and uses thereof |
| CN101607410A (en) * | 2009-03-12 | 2009-12-23 | 刘金忠 | Sunflower stalk laminated plate film-making assembly method and pressing process |
| CA2637828A1 (en) * | 2008-08-11 | 2010-02-11 | Thomas P. O'keefe | Industrial hemp low-density fiberboard |
-
2011
- 2011-04-07 CN CN 201110086665 patent/CN102179855B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129223A (en) * | 1997-10-31 | 1999-05-18 | Misawa Homes Co Ltd | Wood chip cement molding, wood chip adhesion molding, wood-like molding and manufacture thereof |
| US6518387B2 (en) * | 1999-07-29 | 2003-02-11 | Iowa State University Research Foundation, Inc. | Soybean-based adhesive resins and composite products utilizing such adhesives |
| WO2006076814A1 (en) * | 2005-01-21 | 2006-07-27 | 9119-3656 Quebec Inc. | Wood and non-wood plant fibers hybrid composition and uses thereof |
| CA2637828A1 (en) * | 2008-08-11 | 2010-02-11 | Thomas P. O'keefe | Industrial hemp low-density fiberboard |
| CN101607410A (en) * | 2009-03-12 | 2009-12-23 | 刘金忠 | Sunflower stalk laminated plate film-making assembly method and pressing process |
Non-Patent Citations (2)
| Title |
|---|
| 唐忠荣等: "人造板热压方法比较", 《林业科技》 * |
| 张建春等: "工业用大麻纤维综合开发研究", 《中国麻业科学》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108012468A (en) * | 2017-12-21 | 2018-05-08 | 四川九洲电器集团有限责任公司 | A kind of lamination of cyanate ester resin quartz fabric multilayer board and processing technology |
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| CN102179855B (en) | 2013-02-13 |
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