CN1034159A - No Rubber compacting corn stalk Wood-based Panel Production technology - Google Patents
No Rubber compacting corn stalk Wood-based Panel Production technology Download PDFInfo
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- CN1034159A CN1034159A CN 88108852 CN88108852A CN1034159A CN 1034159 A CN1034159 A CN 1034159A CN 88108852 CN88108852 CN 88108852 CN 88108852 A CN88108852 A CN 88108852A CN 1034159 A CN1034159 A CN 1034159A
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- corn stalk
- wood
- production technology
- panel production
- based panel
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Abstract
The present invention relates to plant stem, particularly corn stalk is produced wood-based plate does not have adhesive process.Various chemical components such as a large amount of monose and polysaccharide are arranged in the corn stalk.Be the material conditions that constitute the rubber polymer mixture.The corn stalk fiber makes monose in the corn stalk, polysaccharide change into resin under high temperature, high pressure and acid condition, and its material is glued together, is pressed into sheet material by uniform temperature and pressure.
Description
The present invention relates to plant stem, particularly suppress the wood-based plate technology of (also claiming the particle plate) with corn stalk.
The present invention is according to nineteen eighty-three, the clear 58-31112(3 of Japan Patent) " gluing method of ligno-cellulosic materials " development and come.This patents state " with timber is raw material, with sugar, starch is as adhesive, add suitable catalyst again after, glued board and particieboard that can the production resistance to water." its rationale is that the present invention mainly uses for reference part.
Because contain polysaccharides such as a large amount of pentoses (C5H8D4) n, sugared (C6H10D5) n monosaccharide and cellulose, hemicellulose, lignin, starch in the corn stalk, number of chemical material, these materials are the material conditions that constitute the rubber polymer mixture.
In known corn stalk Wood-based Panel Production technology, though raw material is easy to get, technology is simple, make adhesive owing to add a large amount of urine aldehyde glue, improved the cost of wood-based plate greatly.
The objective of the invention is to be to propose under certain condition a kind of, make monose in the corn stalk, polysaccharide change into adhesive, thereby realize without any need for adhesive compacting corn stalk wood-based plate, its physical and chemical index is better than having the process of the corn stalk wood-based plate of glue.Every cubic metre of corn stalk wood-based plate can be reduced cost more than 1/2nd.
The present invention seeks to realize like this,, under high temperature, high pressure and mild acid conditions, make that monose and polysaccharide change into insoluble resin in the corn stalk, viscose in the corn stalk is lumped together, and add and be pressed into sheet material with pulverizing the corn stalk that grinds through defibrator.
Cellulose, hemicellulose, starch change into monosaccharide in the corn stalk under the effect of water and uniform temperature, monosaccharide is under acid condition, generate 5 hydroxymethylfurfurals, 5 hydroxymethylfurfurals are unstable compounds, and aquation becomes levulic acid or homopolymerization to become the glue of black again.Pentose heats the generation furfural in the diluted acid medium, furancarboxylic acid generates furfuryl alcohol, furfuryl alcohol in acid medium through hydrogenization, at first generate the furfuryl homologue, furfural ether homologue, furfuryl alcohol homologue, the further liquid plastic resin of these linear polymers carries out laterally crosslinked, form insoluble resin, just produced acid in corn stalk self reflection under high temperature, high pressure, its acid has just become catalyst, so do not needed to add in addition acid in whole reflection.
Adopt the corn stalk wood-based plate of technology compacting of the present invention, it is good to have surface smoothness, elegant in appearance, its MOR MPa 〉=18, demifacet tensile strength MPa 〉=0.5, thickness swelling rate≤0.5
And of many uses, can do floor for building, ceiling, partition plate, panelling, and furniture etc., can be with for timber in some fields, its sufficient raw, cheap, advantage such as economical, societal benefits are remarkable.
Figure is no glue laminated system corn stalk artificial panel technology flow chart
Below in conjunction with accompanying drawing enforcement of the present invention is described further:
The purchase of corn stalk and storeroom (1); With cutting machine its corn stalk is cut off 20-30mm (2); Impurity (3) such as silt particle are removed in washing; In defibrator, grind; Steam pressure is controlled at 400KPa-1000KPa, and temperature is at 130 ℃-170 ℃, and the dwell time made material become fiber condition (4) at 3-10 minute; Ground material is to pipeline drying system oven dry, to moisture content be 10
30%
(5); Material after the oven dry is delivered to QPD type spreading machine and is mated formation on the aluminium alloy backing plate and give pressure (thickness will by the density 0.5-0.85g/cm3 slab of mating formation) (6); Have backing plate and give the blank that presses and deliver to hot pressing in the BY124x8/13 type hot press, 180 ℃-250 ℃ of hot pressing temperatures, hot pressing pressure 1MPa-2.5MPa dwell time 1-3 minute, makes it be pressed into sheet material (7); The sheet material that suppresses is delivered to bead cutter (vertically BC1112, laterally BC2124) cut edge, make product meet the requirements of physical dimension (8); The sheet material that cuts is checked and accepted (9); Qualified product export (10) or deep processing (11).
Claims (2)
1, a kind of by the corn stalk of pulverizing, under the weak acid effect, be pressed into the method for wood-based plate through high temperature, hot pressing, in defibrator, grind, it is characterized in that:
(1) grinding temperature is 130 ℃--170 ℃;
(2) steam pressure is 400KPa--1000KPa.
2, according to the method for the described compacting wood-based plate of claim 1, it is characterized in that: the hot press hot pressing temperature is 180 ℃-250 ℃, and pressure is 1MPa-2.5MPa, dwell time 1-3 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88108852 CN1034159A (en) | 1988-12-26 | 1988-12-26 | No Rubber compacting corn stalk Wood-based Panel Production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88108852 CN1034159A (en) | 1988-12-26 | 1988-12-26 | No Rubber compacting corn stalk Wood-based Panel Production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1034159A true CN1034159A (en) | 1989-07-26 |
Family
ID=4835204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88108852 Pending CN1034159A (en) | 1988-12-26 | 1988-12-26 | No Rubber compacting corn stalk Wood-based Panel Production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1034159A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073497C (en) * | 1999-05-05 | 2001-10-24 | 陆仁书 | Middle-density fibrous board made up of wheat or rice straws and aldehyde adhesive and its making mehtod |
| WO2007069807A1 (en) * | 2005-12-13 | 2007-06-21 | Hong, Hook | Functional cornstalk board and preparation method thereof |
| US7838578B2 (en) | 2005-12-13 | 2010-11-23 | Hail-Il Ryu | Functional cornstalk board and preparation method thereof |
| CN103317586A (en) * | 2012-03-21 | 2013-09-25 | 中南林业科技大学 | Environment-friendly glue free particle board and preparation method thereof |
-
1988
- 1988-12-26 CN CN 88108852 patent/CN1034159A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073497C (en) * | 1999-05-05 | 2001-10-24 | 陆仁书 | Middle-density fibrous board made up of wheat or rice straws and aldehyde adhesive and its making mehtod |
| WO2007069807A1 (en) * | 2005-12-13 | 2007-06-21 | Hong, Hook | Functional cornstalk board and preparation method thereof |
| US7838578B2 (en) | 2005-12-13 | 2010-11-23 | Hail-Il Ryu | Functional cornstalk board and preparation method thereof |
| CN103317586A (en) * | 2012-03-21 | 2013-09-25 | 中南林业科技大学 | Environment-friendly glue free particle board and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |