CN105643759A - Size-graded particleboard and manufacturing method thereof - Google Patents
Size-graded particleboard and manufacturing method thereof Download PDFInfo
- Publication number
- CN105643759A CN105643759A CN201610003817.3A CN201610003817A CN105643759A CN 105643759 A CN105643759 A CN 105643759A CN 201610003817 A CN201610003817 A CN 201610003817A CN 105643759 A CN105643759 A CN 105643759A
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- China
- Prior art keywords
- straw
- particleboard
- wheat
- size
- particieboard
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention relates to a size-graded particleboard and a manufacturing method thereof, and belongs to the field of artificial board manufacturing. An isocyanate adhesive is used, and straws of crops wheat rice are used as raw materials; when the humidified moisture content is greater than or equal to 6-10%, various performance indices of the particleboard are optimal and completely meet the requirements of GB/T 4897. 3-2003. The size-graded particleboard manufactured by means of the method has no formaldehyde emission, and is good in environmental protective performance; the straws of crops are used instead of timber, such that timber resources are saved; in short, the method has positive significance to manufacturing of crop straw particleboards.
Description
Art
The present invention relates to a kind of with agricultural crop straw be raw material size-grade particleboard and manufacture method, belong to wood-based plate manufacture field.
Background technology
At present, the manufacture of China's particieboard is still based on wood material. Implement wildwood protected project, timber is limit after cutting down, and many enterprises are absorbed in the predicament of timber resource shortage. China's agricultural straw resource enriches, and straw main chemical compositions is close with timber, if using agricultural crop straw to replace timber resources to produce particieboard, it is possible to greatly alleviate the particieboard enterprise pressure from raw material, promote the sustainable development of industry. Agricultural crop straw is applied to the manufacture of size-grade particleboard by this technology. Although Lauxite exists the problem of Form aldehyde release, but use cost is low, is always up the adhesive that China's particieboard manufacture employs up to. Straw rich surface, containing wax coat, uses Lauxite to be difficult to reach good adhesive effect, and therefore this technology uses isocyanates, and adhesive effect is good, and goods are absent from the problem of Form aldehyde release, good environmental protection.
Summary of the invention
The present invention uses agricultural crop straw as raw material, uses isocyanates to manufacture size-grade particleboard as adhesive, has saved timber resources, and product does not have Form aldehyde release, and environmental protection grade is high. Result of the test shows, the particieboard mechanical property of this kind of structure is fully achieved the requirement of GB/T4897.3-2003.
The technical solution adopted for the present invention to solve the technical problems is: uses wheat straw and rice straw respectively, all use isocyanate adhesive to manufacture size-grade particleboard. Crushed straw aggregate uses different water cut, analyzes its impact on particieboard mechanical property, and then compares and draw appropriated moisture scope. The difference of comparative analysis Properties of Wheat-straw Particleboard and rice straw particieboard physical and mechanical property, finds out the difference in the two technic index.
The invention has the beneficial effects as follows, use agricultural crop straw as raw material saving timber resources, isocyanates is used not have Form aldehyde release as adhesive, point out crushed straw aggregate moisture content optimum range, point out to use wheat straw and rice straw technic index difference, directive function is played in the manufacture of agricultural crop straw particieboard.
Accompanying drawing explanation
There is no accompanying drawing.
Detailed description of the invention
Wheat straw and rice straw particle humidification moisture content calculate by 12%, 10%, 8%, 6% respectively, and isocyanates addition is the 5.8% of wet feed amount, and mat formation book size 530mm �� 380mm, designs density 0.70g/cm3, design thickness 14.5mm.Prepare test material in the following way: use stalk crasher to pulverize wheat straw and Caulis et Folium Oryzae respectively, use monolayer reciprocating gird to prepare test wheat straw particle and crushed aggregates of straw respectively after removing < 0.2mm fines. Carry out spice in the following way: test wheat straw particle and rice straw particle are dried to over dry before use, press the separately performed spice of difference of wheat straw particle, rice straw particle, needed for precise, adhesive, water and homologue doses, water and adhesive realize Homogeneous phase mixing with material respectively after atomization in blender. Extrusion chipboard in the following way: use airflow pavement uniformly to mat formation by grading structure making slab, at the intrinsic pressure manufactured Board of hot press. Platen temperature 190 DEG C, hot pressing time is 240s, adopts three sections of pressurizations, high-pressure 9MPa, high-voltage time 10s, low pressure 2MPa, low pressure time 70s, fixed thick pressure 3��4MPa, fixed thick time 60s. Compacting gained particieboard prepares test specimen after placing 48h, carries out mechanics properties testing according to GB/T17657-2013. Wheat straw and rice straw particieboard testing result as shown in Table 1 and Table 2, are satisfied by the requirement of GB/T4897.3-2003. By contrast, when humidifying moisture content 12%, Properties of Wheat-straw Particleboard and the every mechanical property of rice straw particieboard are decreased obviously, when humidifying moisture content 6%, in order to ensure that product thickness desirable pressure and time slightly increase, humidification moisture content scope >=6��10% suitable under current process conditions. There is the trend of increase along with the reduction density of humidification moisture content in rice straw particieboard, in order to reach the mechanical performance index of Properties of Wheat-straw Particleboard, and the high 0.01��0.03g/cm of density of the density ratio Properties of Wheat-straw Particleboard of rice straw particieboard3��
Density and mechanics properties testing result during table 1 Properties of Wheat-straw Particleboard use different water cut
| Humidification moisture content % | 11.6 | 9.8 | 8.3 | 6.6 |
| Density g/cm3 | 0.703 | 0.704 | 0.704 | 0.701 |
| MOR MPa | 13.7 | 15.8 | 15.5 | 16.8 |
| Elastic modelling quantity MPa | 1561 | 1749 | 1638 | 1742 |
| Internal bond strength MPa | 0.50 | 0.76 | 0.58 | 0.61 |
| Surface bonding strength MPa | 0.80 | 1.06 | 1.05 | 1.12 |
Density and mechanics properties testing result during table 2 rice straw particieboard use different water cut
| Humidification moisture content % | 12.1 | 9.9 | 7.6 | 6.7 |
| Density g/cm3 | 0.704 | 0.721 | 0.726 | 0.734 |
| MOR MPa | 18.5 | 23.8 | 19.3 | 19.6 |
| Elastic modelling quantity MPa | 2150 | 2820 | 2191 | 2168 |
| Internal bond strength MPa | 0.42 | 0.63 | 0.62 | 0.76 |
| Surface bonding strength MPa | 0.92 | 1.09 | 1.06 | 0.98 |
Claims (3)
1. size-grade particleboard and a manufacture method thereof, is characterized in that: uses crops wheat straw and rice straw as raw material, use isocyanates as adhesive, through pulverizing, screening, dry, applying glue, mat formation, hot pressing, manufacture size-grade particleboard.
2. according to claim 1, it is characterized in that: select to use isocyanates as adhesive; Select crops wheat straw and rice straw as raw material; Properties of Wheat-straw Particleboard humidification moisture content >=6��10%; Rice straw particieboard humidification moisture content >=6��10%; Reach Properties of Wheat-straw Particleboard mechanical performance index, rice straw particieboard density ratio wheat straw particle plate hight 0.01��0.03g/cm3��
3. according to claim 1, it is characterized in that: suitable in the manufacture of agricultural crop straw particieboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610003817.3A CN105643759A (en) | 2016-01-04 | 2016-01-04 | Size-graded particleboard and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610003817.3A CN105643759A (en) | 2016-01-04 | 2016-01-04 | Size-graded particleboard and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105643759A true CN105643759A (en) | 2016-06-08 |
Family
ID=56490447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610003817.3A Pending CN105643759A (en) | 2016-01-04 | 2016-01-04 | Size-graded particleboard and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN105643759A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107599117A (en) * | 2017-10-28 | 2018-01-19 | 南京林业大学 | A kind of method for controlling size-grade particleboard edge blanking wood shavings expulsion amount |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227154A (en) * | 1999-01-22 | 1999-09-01 | 南京林业大学 | Method for producing wheat straw flakeboard |
| CN101125436A (en) * | 2007-09-21 | 2008-02-20 | 沈阳重型机械集团有限责任公司 | Technology for producing wood wheat straw composite type directional structure board |
| CN101190536A (en) * | 2007-12-13 | 2008-06-04 | 上海康拜环保科技有限公司 | Corn straw particle board and manufacturing method thereof |
| JP2012091383A (en) * | 2010-10-26 | 2012-05-17 | Wellness Ltd | Method for processing ossb board |
| CN104385424A (en) * | 2014-09-23 | 2015-03-04 | 万华生态板业研究设计（烟台）有限公司 | Crop straw manmade board and production method thereof |
-
2016
- 2016-01-04 CN CN201610003817.3A patent/CN105643759A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227154A (en) * | 1999-01-22 | 1999-09-01 | 南京林业大学 | Method for producing wheat straw flakeboard |
| CN101125436A (en) * | 2007-09-21 | 2008-02-20 | 沈阳重型机械集团有限责任公司 | Technology for producing wood wheat straw composite type directional structure board |
| CN101190536A (en) * | 2007-12-13 | 2008-06-04 | 上海康拜环保科技有限公司 | Corn straw particle board and manufacturing method thereof |
| JP2012091383A (en) * | 2010-10-26 | 2012-05-17 | Wellness Ltd | Method for processing ossb board |
| CN104385424A (en) * | 2014-09-23 | 2015-03-04 | 万华生态板业研究设计（烟台）有限公司 | Crop straw manmade board and production method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107599117A (en) * | 2017-10-28 | 2018-01-19 | 南京林业大学 | A kind of method for controlling size-grade particleboard edge blanking wood shavings expulsion amount |
| CN107599117B (en) * | 2017-10-28 | 2019-07-05 | 南京林业大学 | A method of control size-grade particleboard edge blanking wood shavings expulsion amount |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160608 |