CN1079424A - Denaturation method of wood - Google Patents
Denaturation method of wood Download PDFInfo
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- CN1079424A CN1079424A CN 92106950 CN92106950A CN1079424A CN 1079424 A CN1079424 A CN 1079424A CN 92106950 CN92106950 CN 92106950 CN 92106950 A CN92106950 A CN 92106950A CN 1079424 A CN1079424 A CN 1079424A
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- wood
- timber
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- vacuum
- denaturation method
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Abstract
The invention belongs to the wood preservation technology; system adopts three oleoyl isopropyl titanates, calcium chloride, sodium carbonate and two kinds of formulated anticracking soups of water; hollow in two stages extracts and handles the timber that immersion is injected in the back respectively; charged pressure; make a large amount of calcium ions be adsorbed in wood cell wall and a large amount of carbanion enters wood cell wall, thereby form insoluble calcium carbonate, after repeated treatments 1-2 times; under the effect of coupling agent, promptly form the calcium carbonate transmuted wood.This timber can strain cracking through soaked in water and dried repeatedly, and timber weight increases, wooden hardening, and can reach the effect of self-preserving.
Description
The invention belongs to the wood preservation technology, be a kind of timber crack that prevents, thereby change the method for wood property.
Timber is easy to produce the season cracking phenomenon because of the tangential shrinkage and the difference of drying shrinkage radially.For timber disk (thickness is much smaller than its diameter), when dry in the timber moisture content shift out fast along grain direction, form serious wedge-shaped fracture easilier along radial direction.This season cracking phenomenon of timber has seriously influenced the serviceability of timber.The key that overcomes drying of wood cracking is to manage chemical agent is impregnated in the wood cell wall before the drying of wood, to suppress the drying shrinkage of cell membrane.Mature methods has at present: impregnate with polyethylene glycol (1), makes wood cell wall keep the inflation state; (2) impregnate with other resins such as urea aldehyde or phenolic aldehyde, and heating is solidified resin in cell membrane; (3) use formaldehyde, the polymer monomer that epoxides or styrene etc. contains vinyl impregnates, and makes polymer and wood-cellulose strand produce crosslinked under catalyst action.More than these methods, though can both reach the purpose that overcomes drying of wood cracking, disposal cost is difficult to use aborning all than higher.In addition, these methods all exist shortcoming separately.The shortcoming of method (1) is that polyethylene glycol is easy to infiltrate from timber, when ambient humidity reaches more than 70%, handles material and is dampness.The shortcoming of method (2) and (3) is or/and discharge toxic gas in the woodwork use in the treating of wood process.
The present invention aims to provide a kind of method of improving wood property, the timber of felling is put for a long time do not split.
Below be technical solution of the present invention: soak timber with clear water, the internal substance in the stripping timber, capable again application of vacuum.Successively inject the soup of forming by three oleoyl isopropyl titanates, calcium chloride and water; and make a large amount of calcium amount ionic adsorption on wood cell wall by the soup that sodium carbonate and water are formed; when a large amount of carbanions enters wood cell wall; form insoluble calcium carbonate with the calcium ion that is adsorbed on the wood cell wall; through handling once or twice; after the calcium carbonate composition acquires a certain degree in the timber; under action of coupling agents; generation is crosslinked between calcium carbonate in the wood cell wall and the wood-cellulose strand, and even forms a kind of calcium carbonate transmuted wood.
Below the present invention is described in detail: before timber is carried out degenerative treatments, make earlier anti-cracking agent first fluid component of forming by three oleoyl isopropyl titanates, calcium chloride and water and the second fluid component of forming by sodium carbonate and water.The proportioning of two kinds of components is respectively 1: 10-25: 74-89 and 10-25: 75-90.Fully soak timber with clear water then, with internal substance in the stripping timber.After this timber is inserted in vacuum-pressure treatment narrow-necked earthen jar, handle by following two sections.
First section: vacuumize that (vacuum is 10-10
5Pa changes with wood material species and size) back injects first liquid, treat that soup floods timber fully after, vacuum in the removal narrow-necked earthen jar charges into compressed air (pressure is 0.1-1MPa, changes with assortment and size) subsequently, and keeps 6-8 hour.There is a large amount of calcium ions adsorbed during this, reaches and discharge the narrow-necked earthen jar inner liquid medicine behind the certain hour, and fully wash timber with clear water by wood cell wall.
Second section: at vacuum (vacuum 10-10
5Pa) inject second liquid down.After treating that soup floods timber fully, vacuum in the removal narrow-necked earthen jar, and pressurization (pressure is 0.1-1MPa) kept 6-8 hour.There is a large amount of carbanions to enter wood cell wall in during this, and forms insoluble calcium carbonate, after after a while, discharge the narrow-necked earthen jar inner liquid medicine, fully wash timber with clear water with the calcium ion that is adsorbed by wood cell wall originally.
Repeat above two sections handle 1-2 time after, the interior calcium carbonate composition of timber can reach 10-50%.By the effect of coupling agent, between these calcium carbonate in the wood cell wall and the wood-cellulose strand generation crosslinked, so just formed a kind of calcium carbonate transmuted wood.This calcium carbonate transmuted wood is through soaked in water and dried can strain cracking repeatedly.In addition, it also has the timber of making weightening finish, increases hard and corrosion-resistant effect.
The anti-cracking agent of wood avirulence that the present invention proposes can the toxigenicity material, and the anti-cracking agent prescription also has the timber of making weightening finish, increases hard and corrosion-resistant effect when having effect of anti-cracking.Wide accommodation of the present invention only needs suitably to adjust liquid proportion to the timber of different assortments and size, and level of vacuum, pressure size, and retention time and repeat to impregnate number of times all can reach the purpose that prevents season cracking.
Claims (5)
1; a kind of denaturation method of wood comprises with the soup immersing wood and adopts operations such as vacuum and HIGH PRESSURE TREATMENT; it is characterized in that the anti-cracking agent system that timber sex change operation is adopted comprises by three oleoyl isopropyl titanates; first liquid that calcium chloride and water are formed and the second liquid of forming by sodium carbonate and water; timber vacuumizes the back and injects first liquid; after treating that soup floods timber fully; vacuum in the removal narrow-necked earthen jar charges into compressed air, keeps 6-8 hour; discharge the narrow-necked earthen jar inner liquid medicine then; with clear water flushing, then under vacuum, inject second liquid, treat that soup floods timber fully after; vacuum in the removal narrow-necked earthen jar; pressurization kept 6-8 hour, discharged the narrow-necked earthen jar inner liquid medicine then, and fully washed timber with clear water; so repeated treatments is 1-2 time; through the effect of coupling agent, make between calcium carbonate and the wood-cellulose strand in the wood cell wall generation crosslinked, become the calcium carbonate transmuted wood.
2, according to the described denaturation method of wood of claim 1, it is characterized in that the component ratio of first liquid is 1: 10-25: 74-89, the component of second liquid is than being 10-25: 75-90.
3,, it is characterized in that the vacuum that vacuumizes for twice is respectively 10-10 according to the described denaturation method of wood of claim 1
5Pa.
4,, it is characterized in that the pressure of twice pressurization is respectively 0.1-1MPa according to the described denaturation method of wood of claim 1.
5,, it is characterized in that be respectively 6-8 hour twice pressing time according to the described denaturation method of wood of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106950 CN1079424A (en) | 1992-05-30 | 1992-05-30 | Denaturation method of wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106950 CN1079424A (en) | 1992-05-30 | 1992-05-30 | Denaturation method of wood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1079424A true CN1079424A (en) | 1993-12-15 |
Family
ID=4942571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106950 Pending CN1079424A (en) | 1992-05-30 | 1992-05-30 | Denaturation method of wood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1079424A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934543A (en) * | 2010-08-05 | 2011-01-05 | 中国林业科学研究院木材工业研究所 | Dyeing preservative treatment method for rattan |
| CN104890069A (en) * | 2015-06-25 | 2015-09-09 | 安徽农业大学 | Composite CaCO<3>/wood material and manufacturing method thereof |
| CN106671228A (en) * | 2015-11-09 | 2017-05-17 | 阜南县宏泰工艺品有限公司 | Wood mould inhibitor and preparation method thereof |
| CN107696201A (en) * | 2017-09-25 | 2018-02-16 | 东北林业大学 | A kind of composite wooden material and preparation method thereof |
| CN108818809A (en) * | 2018-06-11 | 2018-11-16 | 佛山腾鲤新能源科技有限公司 | A kind of preparation method on floor heating floor |
-
1992
- 1992-05-30 CN CN 92106950 patent/CN1079424A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934543A (en) * | 2010-08-05 | 2011-01-05 | 中国林业科学研究院木材工业研究所 | Dyeing preservative treatment method for rattan |
| 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 |
| CN106671228A (en) * | 2015-11-09 | 2017-05-17 | 阜南县宏泰工艺品有限公司 | Wood mould inhibitor and preparation method thereof |
| CN107696201A (en) * | 2017-09-25 | 2018-02-16 | 东北林业大学 | A kind of composite wooden material and preparation method thereof |
| CN108818809A (en) * | 2018-06-11 | 2018-11-16 | 佛山腾鲤新能源科技有限公司 | A kind of preparation method on floor heating floor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |