CN102554998A - Method for preparing eucalyptus structural wood - Google Patents
Method for preparing eucalyptus structural wood Download PDFInfo
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- CN102554998A CN102554998A CN201210039417XA CN201210039417A CN102554998A CN 102554998 A CN102554998 A CN 102554998A CN 201210039417X A CN201210039417X A CN 201210039417XA CN 201210039417 A CN201210039417 A CN 201210039417A CN 102554998 A CN102554998 A CN 102554998A
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- eucalyptus
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Abstract
The invention relates to a method for preparing eucalyptus structural wood, comprising the following steps of: (1) peeling or slicing an eucalyptus with diameter class more than or equal to 80mm into veneers with thicknesses of 1.5-3.0mm; (2) putting the veneers and water in a steaming-charring pot, pumping steam to heat, and steaming the veneers for 1-3h; (3) draining water after the steaming is finished; (4) pumping the steam, increasing the pressure to 0.4-0.6MPa and carrying out carbonization heat treatment on the veneers for 1-3h; (5) preparing resin adhesive into solution with the mass concentration of 10-15%, putting the solution into a pressure tank for dipping, wherein the pressurized dipping time is 10-20min, the pressure is 0.6-0.8MPa and the adhesive consumption is 8-12%; (6) drying the veneers at the temperature less than or equal to 60 DEG C after the dipping to ensure that the water content is 16-20% after the drying; and (7) assembling and pressing. The eucalyptus structural wood prepared by utilizing the method disclosed by the invention has the advantages of natural veins, stable mechanical property, good weather resistance, good effects of corrosion prevention, mould prevention and insect prevention, is capable of obviously increasing the additional value of the eucalyptus and is an ideal material for outdoors.
Description
Technical field
The present invention relates to the Wood-based Panel Production technical field, specifically be meant and utilize eucalyptus, handle through series of processes, production structure is with the method for artificial board.
Background technology
Eucalyptus is the fastest seeds that grow in the world, the extensively plantation in China south, and the happiness temperature climate, but moisture-proof is not warm.In Wood-based Panel Production, as the quick growing species of trees, eucalyptus is mainly used in middle density artificial board production, how to improve eucalyptus wood-based plate added value, and the development functionality artificial board is the emphasis direction that the scientific research personnel studies.
Disclose a kind of preparation method of material integrated from plants in the patent " high performance material integrated from plants preparation method " (200410067066.9), got plant raw material, flattened or hack; Remove impurity, dried is handled in boiling and bleaching, degreasing, desugar; Impregnation is pressed into integrated timber, cured; Said impregnation is that the impregnation pond is pushed pressurized treatment in the sealable pressurized tank together with plant material in the pond and glue, and the pressure of pressurized treatment is 0.1-0.4MPa, and the time is 1-3h.This invention main innovate point is to utilize pressure impregnation mode to improve the permeability of adhesive, but one be that its plant material only adopts the boiling mode to handle, and wherein nutritional labeling is removed limited; Damage by worms easily and go mouldy, the 2nd, destroyed the plant texture structure, it is relatively poor to produce the integrated timber superficial makings; The native texture that lacks plant; The 3rd, eucalyptus material variability is big, uses common phenolic resin adhesive to be difficult to obtain desirable board quality, must adopt phenol-formaldehyde resin modified.
Summary of the invention
The purpose of this invention is to provide a kind of eucalyptus structure with artificial preparation of plates method, utilize the eucalyptus structural wood of this method preparation, its grain effect is good; Mechanical strength is high, good weatherability, and the fungus-proof antisepsis effect is good; Can be applied in outdoor occasion, improve the added value of eucalyptus greatly.
For realizing above-mentioned purpose; Technical scheme of the present invention is: eucalyptus rotary-cut or slicing are become thickness 1.5-2.0mm veneer; According to press breadth adjustment specification of the Board, veneer is handled through boiling-charing combining thermal, uses polyvinyl alcohol-P-F copolymer resins gluing agent; Adopt pressure impregnation mode impregnation, form through compacting.
The concrete steps of eucalyptus structural wood preparation are following:
1) eucalyptus rotary-cut or slicing are become the 1.5-2.0mm veneer;
2) in boiling charing jar, add veneer and water, feed Steam Heating, boiling veneer 1-2h;
3) after boiling finishes, draining to recycle tank;
4) slowly feed steam, be forced into 0.3-0.6Mpa, charing heat treatment veneer 1-3h further removes nutritional labeling in the veneer, and the eucalyptus of modification simultaneously structure improves eucalyptus board dimension stability;
5) the resin adhesive is configured to mass concentration 10-15% solution, the impregnation adhesive gets into pressurized tank through the negative pressure of vacuum mode, uses vacuum pressure impregnation mode impregnation, pressure glue dipping time 10-20min, moulding pressure 0.3-0.6Mpa, impregnation resin content 8-12%; One or more adhesives that the resin adhesive can be in resorcinol modified phenolic resin adhesive, rosin modified phenolic resin and the polyvinyl alcohol modification phenolic resins mix.
6) veneer adopts the low temperature drying mode dry behind the impregnation, baking temperature≤60 ℃, and dry back moisture content is 16-20%;
7) according to the press breadth with the impregnation drying after veneer be cut into suitable breadth, assembly compacting forms, density is 0.9-1.1g/cm
3
With the eucalyptus structural wood texture nature of method preparation of the present invention, stable mechanical property, good weatherability, anticorrosion mildew and insect proof is effective, significantly improves the added value of eucalyptus, is as outdoor ideal material.
Concrete technical scheme
Embodiment 1:
Dimensions 2,440 * 1,220 * 20mm true qualities eucalyptus structural wood production method:
1) footpath level >=80mm eucalyptus is peeled into thickness 2.0mm veneer, length 2,500mm, width 1,300mm;
2) veneer is put into boiling-charing jar, fills with water feeds vapour cooking 1h;
3) after boiling finished, draining fed steam to 0.4Mpa, charing heat treatment veneer 1h to the recycle pond;
4) the veneer drying-free that charing is good; Directly get into impregnation in the pressurized tank, the rosin modified phenolic resin adhesive is configured to the impregnation solution of mass concentration 12%, the impregnation adhesive gets into pressurized tank through the negative pressure of vacuum mode; Use vacuum pressure impregnation mode impregnation; Pressure 0.6Mpa, dwell time 15min, resin added 8%;
5) veneer drying behind the impregnation uses progressive kiln dry, baking temperature≤60 ℃, dry back veneer moisture content control 16-20%;
6) compacting: the dry good back of impregnation Monoplacophora is carried out the assembly compacting like LVL production, and density is 1.0g/cm
3
2,440 * 1 of production, 220 * 20mm true qualities eucalyptus structural wood can be used as the plate for timber-construction material.
Embodiment 2:
Dimensions 2,440 * 1,220 * 20mm charing eucalyptus structural wood production method:
1) footpath level >=80mm eucalyptus is peeled into thickness 1.60mm veneer, length 2,500mm, width 1.300mm;
2) veneer is put into boiling-charing jar, fills with water feeds vapour cooking 2h;
3) after boiling finished, draining fed steam to 0.6Mpa, charing heat treatment veneer 3h to the recycle pond;
4) the veneer drying-free that charing is good directly gets into impregnation in the pressurized tank, and the resorcinol modified phenolic resin adhesive is configured to mass concentration 10% impregnation solution, pressure 0.8Mpa, dwell time 15min, resin added 10%;
5) veneer drying behind the impregnation uses progressive kiln dry, baking temperature≤60 ℃, dry back veneer moisture content control 16-20%;
6) compacting: the dry good back of impregnation Monoplacophora is carried out the assembly compacting like LVL production, and density is 1.1g/cm
3
2,440 * 1 of production, 220 * 20mm charing eucalyptus structural wood can be used as outdoor flooring and timber structure is used building.
Embodiment 3:
Dimensions 2,000 * 160 * 140mm true qualities eucalyptus structural wood production method
1) slicing of footpath level >=80mm eucalyptus becomes thickness 1.6mm veneer, length 2000mm, width 105mm;
2) veneer is put into boiling-charing jar, fills with water feeds vapour cooking 1h;
3) after boiling finished, draining fed steam to 0.4Mpa, charing heat treatment veneer 1h to the recycle pond;
4) the veneer drying-free that charing is good directly gets into impregnation in the pressurized tank, and the polyvinyl alcohol modification phenolic resin adhesive is configured to mass concentration 15% impregnation solution, pressure 0.6Mpa, dwell time 15min, resin added 11%;
5) veneer drying behind the impregnation uses progressive kiln dry, baking temperature≤60 ℃, dry back veneer moisture content control 16-20%;
6) compacting: Monoplacophora after the impregnation drying is carried out assembly like LVL production in 2,000 * 160 * 140mm specification mould, density design 1.0g/cm
3, hot setting in solidying kiln then, 150 ℃ of temperature, time 6h.
2,000 * 160 * 140mm true qualities eucalyptus structural wood of producing can be used for the plate for timber-construction material.
Embodiment 4:
Dimensions 2,000 * 160 * 140mm charing eucalyptus structural wood production method
1) slicing of footpath level >=80mm eucalyptus becomes thickness 2.0mm veneer, length 2,000mm, width 140mm;
2) veneer is put into boiling-charing jar, fills with water feeds vapour cooking veneer 2h;
3) after boiling finished, draining fed steam to 0.6Mpa to the recycle pond, and veneer 1h is handled in charing;
4) the veneer drying-free that charing is good directly gets into impregnation in the pressurized tank, and the polyvinyl alcohol modification phenolic resin adhesive is configured to mass concentration 12% impregnation solution, pressure 0.8Mpa, dwell time 15min, resin added 12%;
5) veneer drying behind the impregnation uses progressive kiln dry, baking temperature≤60 ℃, dry back veneer moisture content control 16-20%;
6) compacting: Monoplacophora after the impregnation drying produced like LVL in 2,000 * 160 * 140mm specification mould, carry out assembly, hot setting in solidying kiln then, 150 ℃ of temperature, time 6h.
2,000 * 160 * 140mm charing eucalyptus structural wood of producing is according to outdoor use occasion needs, and saw is separated into the material of certain specification size, can be used as outdoor flooring and plate for timber-construction material.
Claims (2)
1. the preparation method of an eucalyptus structural wood is characterized in that carrying out according to the following steps:
1) directly level >=80mm eucalyptus rotary-cut or slicing become the 1.5-3.0mm veneer;
2) in boiling-charing jar, add veneer and water, feed Steam Heating, boiling veneer 1-3h;
3) boiling finishes the back draining;
4) slowly feed steam, be forced into 0.4-0.6Mpa, charing heat treatment veneer 1-3h;
5) the resin adhesive is configured to mass concentration 10-15% solution, the resin adhesive gets into pressurized tank through the negative pressure of vacuum mode, uses vacuum pressure impregnation mode impregnation, pressure glue dipping time 10-20min, moulding pressure 0.6-0.8Mpa, resin added 8-12%; The resin adhesive is that one or more adhesives in resorcinol modified phenolic resin adhesive, rosin modified phenolic resin and the polyvinyl alcohol modification phenolic resins mix;
6) veneer adopts the low temperature drying mode dry behind the impregnation, baking temperature≤60 ℃, and dry back moisture content is 16-20%;
7) according to the press breadth with the impregnation drying after veneer be cut into suitable breadth, assembly compacting.
2. the preparation method of eucalyptus structural wood according to claim 1 is characterized in that the panel density after the assembly compacting is 1.0-1.1g/cm
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210039417XA CN102554998A (en) | 2012-02-21 | 2012-02-21 | Method for preparing eucalyptus structural wood |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210039417XA CN102554998A (en) | 2012-02-21 | 2012-02-21 | Method for preparing eucalyptus structural wood |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827537A (en) * | 2015-05-06 | 2015-08-12 | 福建农林大学 | Mildew proof treatment method for sawing process of dragon spruce |
| CN106121181A (en) * | 2016-07-08 | 2016-11-16 | 杭州莱克竹木业有限公司 | The recombinant wood floor that a kind of brush wood mixes with bamboo timber |
| CN109262779A (en) * | 2018-10-09 | 2019-01-25 | 广东皇田环保科技有限公司 | It is fire-retardant to dye glue and exempt to paint solid wood board using the fire-retardant of its |
| CN111055358A (en) * | 2019-12-18 | 2020-04-24 | 董舰泽 | Deep processing treatment process of building bamboo wood with durability |
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| GB785007A (en) * | 1954-05-06 | 1957-10-23 | Elmendorf Armin | Composite veneer or plywood panel |
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| US20050257888A1 (en) * | 2004-05-20 | 2005-11-24 | Georgia-Pacific Resins, Inc. | Phenolic resin-based adhesives and methods of using same in preparing laminated veneer lumber (LVL) |
| CN101181789A (en) * | 2007-12-07 | 2008-05-21 | 高晨 | Wood-plastic profiles and manufacturing method therefor |
| CN101357470A (en) * | 2008-06-03 | 2009-02-04 | 中国林业科学研究院木材工业研究所 | Recombination wood and manufacturing method thereof |
| CN101462285A (en) * | 2009-01-23 | 2009-06-24 | 浙江林学院 | Method for producing wear-resistant flame-retardant panel from fast growing wood |
| CN101623893A (en) * | 2009-07-24 | 2010-01-13 | 李茂林 | Manufacturing method of salix mongolica dyed hard wood |
| CN101693382A (en) * | 2009-10-19 | 2010-04-14 | 李�一 | Producing method of wood plastic hard material |
| CN101716790A (en) * | 2009-12-16 | 2010-06-02 | 中国热带农业科学院橡胶研究所 | Method for producing rubber tree carbonized wood by resin pretreatment |
| CN101941217A (en) * | 2010-06-17 | 2011-01-12 | 扎兰屯同德木业有限责任公司 | Insulating wood laminating product and preparation method thereof |
| CN102172940A (en) * | 2011-01-30 | 2011-09-07 | 浙江仕强竹业有限公司 | Method for producing high-density recombined wood |
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2012
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB785007A (en) * | 1954-05-06 | 1957-10-23 | Elmendorf Armin | Composite veneer or plywood panel |
| CN1626324A (en) * | 2003-12-11 | 2005-06-15 | 中国国际海运集装箱(集团)股份有限公司 | Plywood plate in use for floorboard in container and production method |
| US20050257888A1 (en) * | 2004-05-20 | 2005-11-24 | Georgia-Pacific Resins, Inc. | Phenolic resin-based adhesives and methods of using same in preparing laminated veneer lumber (LVL) |
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| CN101357470A (en) * | 2008-06-03 | 2009-02-04 | 中国林业科学研究院木材工业研究所 | Recombination wood and manufacturing method thereof |
| CN101462285A (en) * | 2009-01-23 | 2009-06-24 | 浙江林学院 | Method for producing wear-resistant flame-retardant panel from fast growing wood |
| CN101623893A (en) * | 2009-07-24 | 2010-01-13 | 李茂林 | Manufacturing method of salix mongolica dyed hard wood |
| CN101693382A (en) * | 2009-10-19 | 2010-04-14 | 李�一 | Producing method of wood plastic hard material |
| CN101716790A (en) * | 2009-12-16 | 2010-06-02 | 中国热带农业科学院橡胶研究所 | Method for producing rubber tree carbonized wood by resin pretreatment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827537A (en) * | 2015-05-06 | 2015-08-12 | 福建农林大学 | Mildew proof treatment method for sawing process of dragon spruce |
| CN106121181A (en) * | 2016-07-08 | 2016-11-16 | 杭州莱克竹木业有限公司 | The recombinant wood floor that a kind of brush wood mixes with bamboo timber |
| CN109262779A (en) * | 2018-10-09 | 2019-01-25 | 广东皇田环保科技有限公司 | It is fire-retardant to dye glue and exempt to paint solid wood board using the fire-retardant of its |
| CN111055358A (en) * | 2019-12-18 | 2020-04-24 | 董舰泽 | Deep processing treatment process of building bamboo wood with durability |
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Application publication date: 20120711 |