CN102229170A - Method for manufacturing high-quality poplar composite material - Google Patents

Method for manufacturing high-quality poplar composite material Download PDF

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Publication number
CN102229170A
CN102229170A CN2011101696914A CN201110169691A CN102229170A CN 102229170 A CN102229170 A CN 102229170A CN 2011101696914 A CN2011101696914 A CN 2011101696914A CN 201110169691 A CN201110169691 A CN 201110169691A CN 102229170 A CN102229170 A CN 102229170A
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China
Prior art keywords
poplar
sawn timber
processing
drying
composite
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CN2011101696914A
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Chinese (zh)
Inventor
李贤军
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中南林业科技大学
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Priority to CN2011101696914A priority Critical patent/CN102229170A/en
Publication of CN102229170A publication Critical patent/CN102229170A/en

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Abstract

The invention discloses a method for manufacturing a high-quality poplar composite material. The high-quality novel poplar composite material is produced by performing disassembly treatment on sawn poplar timber by using high-intensity microwave, then impregnating the sawn poplar timber by using phenolic resin and finally performing hot pressing, carbonization and sizing treatment on the sawn poplar timber in a hot press. The method comprises the following steps of: drying the sawn timber till the moisture content is 15 to 25 percent before microwave disassembly, and performing disassembly treatment on the dried sawn timber by using microwave to form crisscross cracks in the poplar; performing secondary drying treatment on the sawn timber, and impregnating the sawn timber by using the phenolic resin; and drying the impregnated poplar till the moisture content is 6 to 10 percent, and performing hot pressing, carbonization and sizing treatment in the hot press. The poplar composite material manufactured by using the method has the characteristics of high density, high strength, good dimensional stability and good decorative effect, and can be widely applied to manufacture of high-grade furniture, floors and indoor and outdoor decorative materials.

Description

A kind of manufacture method of high-quality poplar composite
Technical field
The present invention relates to high-quality poplar method for composite material, belong to Wooden modifying and wood-based plate manufacturing technology field in the timber industry.
Background technology
Willow is one of main artificial forest seeds of China, and fast growth, distribution area is wide, timber reserves is big.At present, China's Poplar Plantation area reaches more than 700 ten thousand hm 2, above the summation of world other countries Poplar Plantation area.But poplar exists defectives such as material is light and soft, hardness is very low, texture is unintelligible, makes its solid wood high value added utilization in furniture finishing field never make a breakthrough.At present, the poplar resource more than 90% can only be used to the central layer of production slurrying, fiberboard, glued board, particieboard and core-board, and added value of product is low.But then, China's top-grade furniture is decorated and is used the solid wood resource shortage, can not satisfy the growing demand of people.Therefore, adopt modern processing and means, the light and soft poplar of material is carried out modification handle, make its density, texture and color characteristic of having high-grade solid wood and having, be used for the manufacturing of high-grade wood products, have very important realistic meaning.
Summary of the invention
The objective of the invention is, exist at poplar exactly that material is light and soft, hardness is very low, texture is unintelligible, can not be used for the defective that high-grade woodwork is made, high-quality poplar method for composite material is provided, develop density height, hardness is big, texture highlights novel poplar composite.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is:
High-quality poplar method for composite material, at first sawn timber being carried out preliminarily dried handles, with high-intensity microwave it is disassembled processing again, to increase the transfer ability of timber internal flow, with phenolic resins it is impregnated with redrying then and handle, in hot press, it is carried out hot pressing, charing at last and typing is handled, produce have the density height, hardness is big, texture highlights feature novel poplar composite.
In the high-quality poplar method for composite material, specifically may further comprise the steps:
(1) sawn timber is dry for the first time, and in the present invention, with conventional kiln drying (kd) or gas drying method the poplar sawn timber being dried to moisture content is between 15-25%.
(2) adopt the high-intensity microwave pre-processing device that the poplar sawn timber is disassembled processing, in the crisscross crack of the inner formation of poplar sawn timber.The poplar microwave is disassembled in the processing, and microwave irradiation power is 10-100 kilowatt, and the processing time is 10-60 second.
(3) with conventional kiln drying (kd) or gas drying method the poplar sawn timber being dried to moisture content is 5-10%.
(4) with the HIGH PRESSURE TREATMENT jar poplar sawn timber is impregnated processing, impregnating treatment fluid employing solids content is the phenolic resins of 20-60%.Impregnating processing pressure is 0.5-5MPa, and the processing time is 1-20 min.
(5) adopt the conventional kiln drying (kd) method and carry out the drying processing, its moisture content is dried to 6-10% impregnating the poplar sawn timber.
(6) in individual layer or multi-daylight press, slab to be carried out hot pressing, charing and typing handle, sawn timber thickness compression ratio is controlled at 20-90%, and hot pressing temperature is 150-220 ℃, and hot pressing time is the thick sawn timber of 5-30 min/cm.
(7) Balance Treatment is put close the storing up of shaping slab, and the resting period is not shorter than 30 days, reduces the heat in the slab, wet stress.
(8) sheet material cutting edge in length and breadth.
Beneficial effect: the present invention has overcome that existing poplar material is light and soft, hardness is very low, texture is unintelligible, should not be used for the defective that high-grade wood products is made, produced poplar composite not only has density height, characteristics that hardness is big, and in the process of thermocompression forming, poplar has been carried out the hot pressing charing processing, highlighted the textural characteristics of poplar, significantly improved the decorative effect of poplar, made it can be widely used in the manufacturing of high-grade wood products.
The specific embodiment
Give an actual example below and describe the present invention.
Embodiment 1:
(1) poplar is just dry: selecting thickness for use is 20 mm, and width is 120mm, and length is the poplar sawn timber of 1000mm, adopts the gas drying method that it is carried out drying and handles, and its moisture content is dried to 20%;
(2) Microwave Pretreatment: adopt the tunnel type micro wave treatment facility that the poplar sawn timber is disassembled processing, microwave irradiation power is 20 kilowatts, and the processing time is 30s;
(3) in baking oven, the poplar sawn timber is carried out drying and handle, its moisture content is dried to 8%;
(4) with the HIGH PRESSURE TREATMENT jar poplar sawn timber is impregnated processing, impregnating treatment fluid, to adopt solids content be 30% phenolic resins, and impregnating processing pressure is 1MPa, and the processing time is 3 minutes;
(5) carry out the drying processing to impregnating poplar in baking oven, the hothouse temperature is set at 60 ℃, and its moisture content is dried to 8%;
(6) before hot pressing, earlier impregnating poplar with dried two superposes at thickness direction, again in single-layer hot press, slab is carried out moulding hot pressing, charing and typing to be handled, sawn timber the compression ratio of thickness direction be controlled at 50%(be hot pressing after the final thickness of sheet material be 20 millimeters), hot pressing temperature is 160 ℃, and hot pressing time is 30 min;
(7) Balance Treatment is put close the storing up of shaping slab, and the resting period is not shorter than 30 days, reduces the heat in the slab, wet stress;
(8) sheet material is carried out cutting edge in length and breadth and handle, promptly obtain the final compound sawn timber of high-quality treating selvedge poplar.
Embodiment 2:
(1) poplar is just dry: selecting thickness for use is 15 mm, and width is 130mm, and length is the poplar sawn timber of 1000mm, adopts the kiln drying method that it is carried out drying and handles, and its moisture content is dried to 15%;
(2) Microwave Pretreatment: adopt the tunnel type micro wave treatment facility that the poplar sawn timber is disassembled processing, microwave irradiation power is 20 kilowatts, and the processing time is 40s;
(3) in baking oven, the poplar sawn timber is carried out drying and handle, its moisture content is dried to 6%;
(4) with the HIGH PRESSURE TREATMENT jar poplar sawn timber is impregnated processing, impregnating treatment fluid, to adopt solids content be 25% phenolic resins, and impregnating processing pressure is 0.8MPa, and the processing time is 4 min;
(5) carry out the drying processing to impregnating poplar in baking oven, the hothouse temperature is set at 60 ℃, and its moisture content is dried to 7%;
(6) before hot pressing, earlier impregnating poplar with dried 3 superposes at thickness direction, again in single-layer hot press, slab is carried out hot pressing, charing and typing to be handled, the final thickness of sawn timber sheet material after the compression ratio 55.6%(of thickness direction is hot pressing is 20 millimeters), hot pressing temperature is 180 ℃, and hot pressing time is 25 min;
(7) Balance Treatment is put close the storing up of shaping slab, and the resting period is not shorter than 30 days, reduces the heat in the slab, wet stress;
(8) sheet material is carried out cutting edge in length and breadth and handle, promptly obtain the compound poplar sawn timber of final high-quality treating selvedge.
The high-quality poplar composite of employing present embodiment production can be used as the manufacturing of woodworks such as top-grade furniture, floor, indoor and outdoor ornament materials.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (4)

1. high-quality poplar method for composite material, it is characterized in that, with high-intensity microwave the poplar sawn timber of moisture content between 15-25% disassembled processing, in the crisscross crack of the inner formation of poplar, and then it is impregnated processing with phenolic resins, in hot press, it is carried out hot pressing, charing more at last and typing is handled, produce have the density height, hardness is big, texture highlights feature novel poplar composite.
2. high-quality poplar method for composite material according to claim 1 is characterized in that, may further comprise the steps:
(1) sawn timber is just done: with conventional kiln drying (kd) or gas drying method the poplar sawn timber is carried out drying and handle, the whole moisture content of sawn timber is between 15-25%;
(2) microwave is disassembled: adopt the high-intensity microwave pre-processing device that the poplar sawn timber is disassembled processing, in the crisscross crack of the inner formation of poplar sawn timber;
(3) sawn timber redrying: it is 5-10% that the poplar sawn timber after with conventional kiln drying (kd) or gas drying method microwave being disassembled is dried to moisture content;
(4) impregnate processing: with the HIGH PRESSURE TREATMENT jar poplar sawn timber is impregnated processing, impregnating treatment fluid employing solids content is the phenolic resins of 20-60%;
(5) adopt the conventional kiln drying (kd) method and carry out the drying processing, its moisture content is dried to 6-10% impregnating the poplar sawn timber;
(6) hot pressing, charing and typing are handled: in individual layer or multi-daylight press, slab is carried out moulding hot pressing, charing and typing to be handled, sawn timber thickness compression ratio is controlled at 20-90%, and hot pressing temperature is 150-220 ℃, and hot pressing time is the thick sawn timber of 5-30 min/cm;
(7) Balance Treatment is put close the storing up of shaping slab, and the resting period is not shorter than 30 days, reduces the heat in the slab, wet stress;
(8) sheet material cutting edge in length and breadth.
3. high-quality poplar method for composite material according to claim 1 and 2 is characterized in that, when microwave was disassembled, microwave irradiation power was 10-100 kilowatt, and the processing time is 10-60 second.
4. high-quality poplar method for composite material according to claim 1 and 2 is characterized in that, impregnates when handling, and impregnating processing pressure is 0.5-5MPa, and the processing time is 1-20 min.
CN2011101696914A 2011-06-23 2011-06-23 Method for manufacturing high-quality poplar composite material CN102229170A (en)

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Cited By (13)

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Publication number Priority date Publication date Assignee Title
CN102615685A (en) * 2012-04-25 2012-08-01 中南林业科技大学 Integrated processing method for realizing flame retarding, hardening and wear resisting for fast-growing wood
CN102744752A (en) * 2012-07-30 2012-10-24 李茂林 Wood-base composite thickening plates and manufacture method thereof
CN102825645A (en) * 2012-09-24 2012-12-19 中南林业科技大学 Poplar sawn timber and manufacturing method thereof
CN102941609A (en) * 2012-11-15 2013-02-27 湖州铁佛耐火材料有限公司 Method for preparing compressed section bar
CN103171013A (en) * 2013-03-29 2013-06-26 安徽美源装饰科技有限公司 Technique of wood deep carbonation
CN103435350A (en) * 2013-08-02 2013-12-11 杜思岑 Manufacturing method of carbon bamboo ceramic
WO2014056128A1 (en) * 2012-10-10 2014-04-17 徐州加林木业有限公司 Carbonized wood board and production method and use thereof
CN104875266A (en) * 2015-06-29 2015-09-02 桦甸市惠邦木业有限责任公司 Charring solid-wood composite board and production method thereof
CN105108858A (en) * 2015-08-06 2015-12-02 浙江汇德木业有限公司 Process for producing dark polar wood imitating precious wood
CN105965638A (en) * 2016-07-11 2016-09-28 中国林业科学研究院林业新技术研究所 Microwave treatment reconstructed material and preparing methods thereof
CN106182284A (en) * 2016-07-11 2016-12-07 中国林业科学研究院木材工业研究所 Microwave treatment material colored garnishing veneer and preparation method thereof
CN106493810A (en) * 2016-09-23 2017-03-15 中南林业科技大学 A kind of can photocatalysis degradation organic contaminant functional form timber preparation method
CN108818818A (en) * 2018-07-10 2018-11-16 四川农业大学 A kind of preparation method of timber-lactic acid composite material

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102615685B (en) * 2012-04-25 2015-05-06 中南林业科技大学 Integrated processing method for realizing flame retarding, hardening and wear resisting for fast-growing wood
CN102615685A (en) * 2012-04-25 2012-08-01 中南林业科技大学 Integrated processing method for realizing flame retarding, hardening and wear resisting for fast-growing wood
CN102744752B (en) * 2012-07-30 2016-04-20 李茂林 A kind of wooden base compound thickeies sheet material and manufacture method thereof
CN102744752A (en) * 2012-07-30 2012-10-24 李茂林 Wood-base composite thickening plates and manufacture method thereof
CN102825645B (en) * 2012-09-24 2014-12-31 中南林业科技大学 Poplar sawn timber and manufacturing method thereof
CN102825645A (en) * 2012-09-24 2012-12-19 中南林业科技大学 Poplar sawn timber and manufacturing method thereof
WO2014056128A1 (en) * 2012-10-10 2014-04-17 徐州加林木业有限公司 Carbonized wood board and production method and use thereof
CN102941609A (en) * 2012-11-15 2013-02-27 湖州铁佛耐火材料有限公司 Method for preparing compressed section bar
CN103171013A (en) * 2013-03-29 2013-06-26 安徽美源装饰科技有限公司 Technique of wood deep carbonation
CN103435350A (en) * 2013-08-02 2013-12-11 杜思岑 Manufacturing method of carbon bamboo ceramic
CN103435350B (en) * 2013-08-02 2016-07-13 杜思岑 A kind of manufacture method of carbon bamboo ceramic
CN104875266A (en) * 2015-06-29 2015-09-02 桦甸市惠邦木业有限责任公司 Charring solid-wood composite board and production method thereof
CN105108858A (en) * 2015-08-06 2015-12-02 浙江汇德木业有限公司 Process for producing dark polar wood imitating precious wood
CN105108858B (en) * 2015-08-06 2017-01-04 浙江汇德木业有限公司 A kind of dark color imitates the production technology of the poplar wood of famous and precious wood
CN105965638A (en) * 2016-07-11 2016-09-28 中国林业科学研究院林业新技术研究所 Microwave treatment reconstructed material and preparing methods thereof
CN106182284A (en) * 2016-07-11 2016-12-07 中国林业科学研究院木材工业研究所 Microwave treatment material colored garnishing veneer and preparation method thereof
CN106493810A (en) * 2016-09-23 2017-03-15 中南林业科技大学 A kind of can photocatalysis degradation organic contaminant functional form timber preparation method
CN106493810B (en) * 2016-09-23 2018-09-25 中南林业科技大学 It is a kind of can photocatalysis degradation organic contaminant functional form timber preparation method
CN108818818A (en) * 2018-07-10 2018-11-16 四川农业大学 A kind of preparation method of timber-lactic acid composite material

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Application publication date: 20111102