CN101234496A - Method for preventing eucalyptus wood from shrinking - Google Patents
Method for preventing eucalyptus wood from shrinking Download PDFInfo
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- CN101234496A CN101234496A CNA2008100307071A CN200810030707A CN101234496A CN 101234496 A CN101234496 A CN 101234496A CN A2008100307071 A CNA2008100307071 A CN A2008100307071A CN 200810030707 A CN200810030707 A CN 200810030707A CN 101234496 A CN101234496 A CN 101234496A
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Abstract
The invention discloses a method for preventing the eucalyptus wood shrinkage, including the following steps: (1) certain amount from one of calcium chloride, magnesium chloride, barium chloride, Magnesium nitrate weighed or the mixture of calcium chloride, magnesium chloride, barium chloride, Magnesium nitrate with any proportion are dissolved into the water to form a first solution with a concentration of 1-500g L <-1>; certain amount from one of sodium carbonate and potassium carbonate weighed or the mixture of any proportion are dissolved into the water to form a second solution with a concentration of 0.5-200g L<-1>; (2) the first solution is impregnated into the wood with an impregnating method; the technique parameters are that the temperature is 10 to 70 DEG C; the pressure keeping time is 4 to 72 hours; and the pressure is 0.1 -50MPa; then the first solution is released. (3) the second solution is impregnated into the wood with the impregnating method; the technique parameters are that the temperature is 10 to 70 DEG C; the pressure keeping time is 5 to 96 hours; and the pressure is 0.1-50MPa; then the second solution is released. With simple operation technique, good control and low cost, the preparation method does not need the complex chemical treatment and expensive equipment which is easy industrialized and has very wide application prospect.
Description
Technical field
The present invention relates to a kind of method that prevents eucalyptus wood from shrinking.
Background technology
Eucalyptus is that global fast growth, economic worth are big, ecology and the high seeds of social benefit.From the 1950's, China begins test plantation eucalyptus plantation, and nearly 10 provinces (autonomous region, municipality directly under the Central Government) progressively promote in south as main reproducting tree species.At present, the eucalyptus wood chip export volume of China reaches 1,000,000 tons, is China maximum seeds of earning foreign exchange at present.
A kind of seasoning defect drying defect that takes place when wood shrinkage is the drying of wood, the macro manifestations of shrinkage are that plate surface is that irregular part caves inward and the cross section presents irregular figure, and lumber thickness direction shrinkage factor increases considerably; The microcosmic performance normally is polygon or the circular inside collapse of cell, and it is flat and narrow that cell becomes, and also blind crack can occur on the cell membrane when shrinkage is serious.Shrinkage not only makes the shrinkage factor of timber increase, and loss increases, and because of it is not the whole cells that occur in timber all sites or certain tissue, thereby produces distortion when causing the drying of wood.The density of Eucalyptus, moisture content and contract with dry rate variability are big, poor permeability, easily produce seasoning defect drying defects such as shrinkage, cracking in dry run.
Summary of the invention
Technical problem to be solved by this invention provides the method that prevents eucalyptus wood from shrinking that a kind of operating procedure is simple, controllability good, cost is low.
In order to solve the problems of the technologies described above, the method for eucalyptus wood from shrinking that prevents provided by the invention comprises the steps:
(1), take by weighing a certain amount of calcium chloride, magnesium chloride, barium chloride, magnesium nitrate mixture wherein a kind of or arbitrary proportion and be dissolved in the water, formation concentration is 1-500gL
-1First solution; Taking by weighing that a certain amount of sodium carbonate, potash mixture wherein a kind of or arbitrary proportion is dissolved in the water and forms concentration is 0.5-200gL
-1Second solution;
(2), adopt the method for impregnating that first solution is impregnated in the timber, technological parameter is: temperature 10-70 ℃, dwell time 4-72h, pressure 0.1-50MPa emits first solution then;
(3), again adopt the method for impregnating that second solution is impregnated in the timber, technological parameter is: temperature 10-70 ℃, dwell time 5-96h, pressure 0.1-50MPa emits second solution then and gets final product.
Timber described in the above-mentioned steps (2) is meant log, sawn timber, wood shavings or the wood-fibred of Eucalyptus.
Adopt the method that prevents eucalyptus wood from shrinking of technique scheme, producing brium carbonate, calcium carbonate and/or magnesium carbonate is deposited in the timber pore, suppress the shrinkage of Eucalyptus in dry run to reach, can effectively contain the generation of eucalyptus wood from shrinking, the probability of treated Eucalyptus generation shrinkage is in 10%.Of the present inventionly have that operating procedure is simple, favorable reproducibility, need not any expensive device, also do not need the complex chemical treatment process, what is more important, timber after the present invention handles is tasteless nontoxic, environmentally friendly, so the present invention has good industrial applications prospect.
In sum, technical problem to be solved by this invention provides the method that prevents eucalyptus wood from shrinking that a kind of operating procedure is simple, controllability good, cost is low.
The specific embodiment
Can further be expressly understood the present invention by specific embodiments of the invention given below, but following embodiment is not a limitation of the invention.
Embodiment 1:
(1), take by weighing a certain amount of calcium chloride and be dissolved in the water, formation concentration is 1gL
-1First solution; Taking by weighing that a certain amount of sodium carbonate is dissolved in the water and forms concentration is 0.5gL
-1Second solution;
(2), adopt the method for impregnating first solution to be impregnated in the log of Eucalyptus, technological parameter is: 20 ℃ of temperature, dwell time 4h, pressure 10MPa emits first solution then;
(3), again adopt the method for impregnating second solution to be impregnated in the log of Eucalyptus, technological parameter is: 20 ℃ of temperature, dwell time 5h, pressure 10MPa emits second solution then and gets final product, and produces precipitation of calcium carbonate in timber pore.
Embodiment 2:
(1), take by weighing a certain amount of magnesium chloride and be dissolved in the water, formation concentration is 500gL
-1First solution; Taking by weighing that a certain amount of sodium carbonate is dissolved in the water and forms concentration is 100gL
-1Second solution;
(2), adopt the method for impregnating first solution to be impregnated in the sawn timber of Eucalyptus, technological parameter is: 10 ℃ of temperature, dwell time 60h, pressure 0.1MPa emits first solution then;
(3), again adopt the method for impregnating second solution to be impregnated in the sawn timber of Eucalyptus, technological parameter is: 10 ℃ of temperature, dwell time 60h, pressure 0.1MPa emits second solution then and gets final product, and produces magnesium carbonate and is deposited in the timber pore.
Embodiment 3:
(1), take by weighing a certain amount of barium chloride and be dissolved in the water, formation concentration is 200gL
-1First solution; Taking by weighing that a certain amount of potash is dissolved in the water and forms concentration is 200gL
-1Second solution;
(2), adopt the method for impregnating first solution to be impregnated in the wood shavings of Eucalyptus, technological parameter is: 70 ℃ of temperature, dwell time 72h, pressure 30MPa emits first solution then;
(3), again adopt the method for impregnating second solution to be impregnated in the wood shavings of Eucalyptus, technological parameter is: 70 ℃ of temperature, dwell time 96h, pressure 30MPa emits second solution then and gets final product, and produces barium carbonate sediment in timber pore.
Embodiment 4:
(1), take by weighing a certain amount of magnesium nitrate and be dissolved in the water, formation concentration is 300gL
-1First solution; Taking by weighing that a certain amount of potash is dissolved in the water and forms concentration is 100gL
-1Second solution;
(2), adopt the method for impregnating first solution to be impregnated in the wood-fibred of Eucalyptus, technological parameter is: 50 ℃ of temperature, dwell time 48h, pressure 50MPa emits first solution then;
(3), again adopt the method for impregnating second solution to be impregnated in the wood-fibred of Eucalyptus, technological parameter is: 50 ℃ of temperature, dwell time 56h, pressure 50MPa emits second solution then and gets final product, and produces magnesium carbonate and is deposited in the timber pore.
Embodiment 5:
(1), the mixture that takes by weighing a certain amount of calcium chloride, magnesium chloride, barium chloride, magnesium nitrate arbitrary proportion is dissolved in the water, formation concentration is 180gL
-1First solution; The mixture that takes by weighing a certain amount of sodium carbonate, potash arbitrary proportion is dissolved in the water and forms concentration is 180gL
-1Second solution;
(2), adopt the method for impregnating first solution to be impregnated in the log of Eucalyptus, technological parameter is: 50 ℃ of temperature, dwell time 58h, pressure 40MPa emits first solution then;
(3), again adopt the method for impregnating second solution to be impregnated in the log of Eucalyptus, technological parameter is: 50 ℃ of temperature, dwell time 80h, pressure 40MPa emits second solution then and gets final product, and produces brium carbonate, calcium carbonate and magnesium carbonate and is deposited in the timber pore.
Claims (2)
1, a kind of method that prevents eucalyptus wood from shrinking is characterized in that: comprise the steps:
(1), take by weighing a certain amount of calcium chloride, magnesium chloride, barium chloride, magnesium nitrate mixture wherein a kind of or arbitrary proportion and be dissolved in the water, formation concentration is 1-500gL
-1First solution; Taking by weighing that a certain amount of sodium carbonate, potash mixture wherein a kind of or arbitrary proportion is dissolved in the water and forms concentration is 0.5-200gL
-1Second solution;
(2), adopt the method for impregnating that first solution is impregnated in the timber, technological parameter is: temperature 10-70 ℃, dwell time 4-72h, pressure 0.1-50MPa emits first solution then;
(3), again adopt the method for impregnating that second solution is impregnated in the timber, technological parameter is: temperature 10-70 ℃, and dwell time 5-96h, pressure 0.1-50MPa emits second solution then and gets final product.
2, the method that prevents eucalyptus wood from shrinking according to claim 2 is characterized in that: described timber is meant log, sawn timber, wood shavings or the wood-fibred of Eucalyptus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100307071A CN101234496B (en) | 2008-02-27 | 2008-02-27 | Method for preventing eucalyptus wood from shrinking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100307071A CN101234496B (en) | 2008-02-27 | 2008-02-27 | Method for preventing eucalyptus wood from shrinking |
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| Publication Number | Publication Date |
|---|---|
| CN101234496A true CN101234496A (en) | 2008-08-06 |
| CN101234496B CN101234496B (en) | 2010-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100307071A Expired - Fee Related CN101234496B (en) | 2008-02-27 | 2008-02-27 | Method for preventing eucalyptus wood from shrinking |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890069A (en) * | 2015-06-25 | 2015-09-09 | 安徽农业大学 | Composite CaCO<3>/wood material and manufacturing method thereof |
| CN106182298A (en) * | 2016-07-18 | 2016-12-07 | 国际竹藤中心 | A kind of preparation method of the in-situ modified bamboo wood of nano-calcium carbonate |
| CN112077966A (en) * | 2020-09-16 | 2020-12-15 | 德华兔宝宝装饰新材股份有限公司 | Environment-friendly flame-retardant wood modification method |
-
2008
- 2008-02-27 CN CN2008100307071A patent/CN101234496B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890069A (en) * | 2015-06-25 | 2015-09-09 | 安徽农业大学 | Composite CaCO<3>/wood material and manufacturing method thereof |
| CN104890069B (en) * | 2015-06-25 | 2017-04-05 | 安徽农业大学 | A kind of CaCO3/ Wood composite material and preparation method thereof |
| CN106182298A (en) * | 2016-07-18 | 2016-12-07 | 国际竹藤中心 | A kind of preparation method of the in-situ modified bamboo wood of nano-calcium carbonate |
| CN112077966A (en) * | 2020-09-16 | 2020-12-15 | 德华兔宝宝装饰新材股份有限公司 | Environment-friendly flame-retardant wood modification method |
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| Publication number | Publication date |
|---|---|
| CN101234496B (en) | 2010-06-09 |
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Assignee: Langfang Huari Furniture Share Co., Ltd. Assignor: Central South University of Forestry and Technology Contract record no.: 2011130000045 Denomination of invention: Method for preventing eucalyptus wood from shrinking Granted publication date: 20100609 License type: Exclusive License Open date: 20080806 Record date: 20110509 |
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Owner name: LANGFANG HUARI FURNITURE CO., LTD. Effective date: 20120105 |
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Effective date of registration: 20120105 Address after: 410004 Shaoshan South Road, Hunan, No. 498, No. Co-patentee after: Langfang Huari Furniture Share Co., Ltd. Patentee after: Central South University of Forestry and Technology Address before: 410004 Shaoshan South Road, Hunan, No. 498, No. Patentee before: Central South University of Forestry and Technology |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20170227 |