CN102672771A - Single-side surface layer densification processing method and product for wood - Google Patents
Single-side surface layer densification processing method and product for wood Download PDFInfo
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- CN102672771A CN102672771A CN2012101805259A CN201210180525A CN102672771A CN 102672771 A CN102672771 A CN 102672771A CN 2012101805259 A CN2012101805259 A CN 2012101805259A CN 201210180525 A CN201210180525 A CN 201210180525A CN 102672771 A CN102672771 A CN 102672771A
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Abstract
The invention discloses a single-side surface layer densification processing method and a product for wood. The method includes dipping treatment; a dried board base material is dipped into a dipping tank filled with agents, the dipping thickness of the surface of the board base material is controlled through control of the dipping depth of the board base material into the liquid level of the agents, the agents include urea resin and nano calcium carbonate granules, and the nano calcium carbonate granules enter the pores of the board base material during the dipping. A floorboard produced through the processing method is composed of a densification layer and the board base material, and the lower surface of the densification layer is connected with the upper surface of the board base material. According to the processing method, the dipping thickness of the floorboard is controlled through the increase and decrease of the liquid level height of the agents, only the surface of the floorboard contacts with the agents, therefore the agents are saved; drying after dipping is not needed, and quality problems caused by the dipping and drying can be avoided, processing steps are reduced, and outturn percentage is improved.
Description
Technical field
The product that the present invention relates to a kind of processing method of timber and adopt this method to make, particularly a kind of timber single face top layer densification processing method and product.
Background technology
Existing timber single face strengthening material processing method is: with rotary-cut or the veneer (thickness is generally in 2mm) that dissects, and dipping reinforced resins or anti-powder composition; Epidermis veneer after will handling again is gluing on base material.This method can realize the single face reinforcement of product, but has following problem: 1. gluing step need be used a large amount of glue, increases cost; 2. the epidermis after handling and the moisture content of base material, stress etc. can not get better controlled, and this processing method is not suitable for solid wooden floor board.
For solid wooden floor board and solid wood furniture, prior art is that the integral body of timber substrate (six surfaces) is flooded, and is dry then, to improve the case hardness of timber.Owing to really the case hardness of timber there is the just surface of base material of requirement; Therefore mass-impregnation can be wasted a large amount of medicaments, and only the upper surface of base material is flooded, and then impregnate layer is carried out drying; Then timber is easy to the inhomogeneous appearance distortion of stress, quality defects in use.
Summary of the invention
The objective of the invention is to, a kind of timber single face top layer densification processing method and product are provided.Adopt method of the present invention, can practice thrift a large amount of medicaments in process of production, and the impregnate layer of timber substrate can be out of shape after curing behind the dipping, can quality defects.
Technical scheme of the present invention: a kind of timber single face top layer densification processing method; The step that comprises dipping: a surface immersion of plank base material is filled in the impregnating autoclave of medicament; A surface at the plank base material forms impregnate layer, and medicament comprises the Lauxite that adds 5% ~ 8% nano-calcium carbonate particles; And the step of cured: measure the density of the impregnate layer of plank base material, select different cured modes according to density.
In the densification processing method of aforesaid timber single face top layer; Be provided with support in the said impregnating autoclave; The plank base material is placed on a top of the trellis; Backing positions remains unchanged, and controls the medicament degree of depth through the pharmaceutical pipeline that is located at the impregnating autoclave sidewall to impregnating autoclave input medicament then, and then control plank base material dipping thickness.
In the densification processing method of aforesaid timber single face top layer; When the density of plank base material impregnate layer is lower than 0.6g/cm3; Selection is carried out hot-pressing processing to the plank base material: the plank base material after will flooding is placed on the heating platen; The impregnate layer of plank base material and temperature are that 120 ℃ ~ 180 ℃ heating platen contacts, and the heating platen that does not flood face and temperature and be room temperature ~ 50 ℃ contacts; During hot pressing, heating plate is controlled at 8MPa-15MPa to the pressure of plank base material; After the decrement of impregnate layer reaches 20% ~ 50%, the identical temperature of heating platen that raises and extremely to contact with the temperature of the heating platen of dipping face contact not, pressurize 20min ~ 60min with the dipping face.
In the densification processing method of aforesaid timber single face top layer, the said heating platen temperature that contacts with impregnate layer is 150 ℃, and heating platen is 10 MPa to the pressure of plank base material, and the dwell time is 30 min.
In the densification processing method of aforesaid timber single face top layer,, then the plank base material is carried out charing and handle when the density of plank base material impregnate layer during greater than 0.6 g/cm3.
The prepared product of aforesaid timber single face top layer densification processing method comprises the plank base material, and a surface of plank base material is one deck densification layer.
In the prepared product of aforesaid timber single face top layer densification processing method, be filled with Lauxite and nano-calcium carbonate in the timber pore of said densification layer.
In the prepared product of aforesaid timber single face top layer densification processing method, the thickness of said dense layer is between 0.7mm ~ 3mm.
Compared with prior art, processing method of the present invention is a surface of plank base material to be immersed in the impregnating autoclave form impregnate layer, and the density of the impregnate layer of plank base material is measured in the dipping back, selects different cured modes according to density.Adopt method of the present invention; Medicament only contacts individual layer and can practice thrift a large amount of medicaments in process of production; Medicament solidifies with hot pressing/charing step to be accomplished simultaneously, has reduced drying steps, has shortened the production time, has improved product quality; Existing impregnation technology can be practiced thrift 10% ~ 20% production cost, and the production cycle that is reduced by at least 10 days; The finished section bar superficial density is greater than 0.6g/cm3, applicable to the making of solid wooden floor board, and the density board raw material of alternative existing plate fitment, make the plate fitment solid woodization; Product stability is good, and use applicable to geothermal environment on the floor of making.
Hot pressing process can compress the plank base material when accomplishing medicament curing, increases the density of plank base material; Improved the intensity of impregnate layer simultaneously; Not yielding, hot pressing charing step balance the impregnate layer and the stress of dipping part, improve the stability of dipping part simultaneously; Charing is handled and is eliminated plank base material internal stress, balance beam plate substrate internal moisture, and impregnate layer becomes charring layer simultaneously, not only increased intensity, and material is more stable, and is not yielding.The quality problems of having avoided the plank base material in dry run, to occur are handled in charing, have improved volume recovery.
The dipping medicament uses Lauxite to add nano-calcium carbonate, and medicament is got in the wood cell smoothly, effectively strengthens wood surface hardness.Use existing application of method of nono calcium carbonate modified Lauxite, be applied to the Lauxite modification in the process of glued board at present, purpose is to reduce the free formaldehyde in the Lauxite; Use does not almost have at the wood surface dipping process, and the particle diameter of the nano-calcium carbonate of use is little, can get into smoothly in the timber pit, utilizes its reinforced effects, and Lauxite is replenished, and better realizes reinforced effects.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Being labeled as in the accompanying drawing: 1-impregnating autoclave, 2-plank base material, 21-impregnate layer (densification layer), 3-support, 4-pharmaceutical pipeline, 41-valve.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described, but not as the foundation to the present invention's restriction.
Embodiment.A kind of timber single face top layer densification processing method may further comprise the steps:
Dipping: with timber dry after rotary-cut or the sawing, a surface is immersed and is filled in the impregnating autoclave 1 of medicament, carries on the support 3 in impregnating autoclave 1, and the position of support 3 remains unchanged.Impregnating autoclave 1 sidewall is provided with pharmaceutical pipeline 4, and to impregnating autoclave 1 delivery of medicaments, 4 are provided with the height that valve 41 is used for the stable pharmaceutical liquid level on the pharmaceutical pipeline through pharmaceutical pipeline 4.According to the different of the material of timber and the impregnate layer thickness that requires to obtain different, control floor dipping thickness through the height of up-down medicament liquid level.Control the dipping thickness of plank substrate surface like this through the degree of depth of control plank base material immersion medicament liquid level, be merely surface contact medicament, can practice thrift medicament; It is dry to need not to flood the back, can reduce the quality problems that occur because of impregnation drying again, reduces processing link, improves volume recovery.
In the dipping medicament, add the Lauxite of 5% ~ 8% nano-calcium carbonate particles, medicament is got in the wood cell smoothly, effectively strengthen wood surface hardness.Use existing application of method of nono calcium carbonate modified Lauxite, be applied to the Lauxite modification in the process of glued board at present, purpose is to reduce the free formaldehyde in the Lauxite; Use does not almost have at the wood surface dipping process, and the particle diameter of the nano-calcium carbonate of use is little, can get into smoothly in the timber pit, utilizes its reinforced effects, and Lauxite is replenished, and better realizes reinforced effects.
Hot-pressing processing: when the density of plank base material 2 impregnate layer 21 is lower than 0.6 g/cm3; Plank base material 2 is placed on the heating platen; The impregnate layer 21 of plank base material 2 and temperature are that 150 ℃ heating platen contacts, and the heating platen that does not flood face and temperature and be room temperature ~ 50 ℃ contacts; During hot pressing, heating platen is controlled at 10MPa to the pressure of plank base material 2; After impregnate layer 21 decrements reach 20% ~ 50%, the identical temperature of heating platen that raises and extremely to contact with the temperature of the heating platen of dipping face contact not, pressurize 30min with the dipping face.Hot pressing process can compress medicament dipping timber partly when accomplishing medicament curing, further improves wood surface intensity.
Charing is handled: when the density of plank base material impregnate layer during greater than 0.6g/cm3, then the impregnate layer of plank base material is carried out charing and handle.Can adopt charing processing of kiln formula or heat pressing type charing to handle, these two kinds of methods all are prior aries.The charing of kiln formula is treated in anoxic environment, through 180 ℃ ~ 250 ℃ heat-treated, fixedly the decrement of hot pressing process, improve compression section not stability, eliminate wood internal stress, balance timber internal moisture.And when adopting the heat pressing type charing to handle, just can realize as long as heat to heating plate.
Machining: normal machined, positive sanding amount is no more than 1mm, makes finished product at last.
The prepared plank of processing method of the present invention; Comprise densification layer 21 and plank base material 2; Densification layer 21 lower surface connect the upper surface of plank base material 2, are filled with Lauxite and nano-calcium carbonate in the timber pore of densification layer 21, and the thickness of dense layer 2 is at 2mm.The densification floor machined surface that the plank that makes with the present invention is processed into is few, more saves material, uses more economically, and has higher surface strength, more helps promoting.The product that the present invention makes can also substitute the density board raw material of existing plate fitment except being used for the floor, makes the plate fitment solid woodization, and product stability is good.
Claims (8)
1. timber single face top layer densification processing method; It is characterized in that; The step that comprises dipping: a surface immersion of plank base material (2) is filled in the impregnating autoclave (1) of medicament; A surface at plank base material (2) forms impregnate layer (21), and medicament comprises the Lauxite that adds 5% ~ 8% nano-calcium carbonate particles; And the step of cured: measure the density of the impregnate layer of plank base material, select different cured modes according to density.
2. timber single face according to claim 1 top layer densification processing method; It is characterized in that; Be provided with support (3) in the said impregnating autoclave (1), plank base material (2) is placed on support (3) top, support (3) position remains unchanged; Control the medicament degree of depth through the pharmaceutical pipeline (4) that is located at impregnating autoclave (1) sidewall to impregnating autoclave input medicament then, and then control plank base material (2) dipping thickness.
3. timber single face according to claim 1 and 2 top layer densification processing method; It is characterized in that; When the density of plank base material (2) impregnate layer (21) is lower than 0.6g/cm3; Selection is carried out hot-pressing processing to plank base material (2): the plank base material (2) after will flooding is placed on the heating platen, and the impregnate layer (21) and the temperature of plank base material (2) is that 120 ℃ ~ 180 ℃ heating platen contacts, and the heating platen that does not flood face and temperature and be 50 ℃ of room temperatures contacts; During hot pressing, heating platen is controlled at 8MPa-15MPa to the pressure of plank base material (2); After impregnate layer (21) decrement reaches 20% ~ 50%, the identical temperature of heating platen that raises and extremely to contact with the temperature of the heating platen of dipping face contact not, pressurize 20min ~ 60min with dipping face (21).
4. timber single face according to claim 3 top layer densification processing method is characterized in that: the described heating platen temperature that contacts with impregnate layer (21) is 150 ℃, and heating platen is 10 MPa to the pressure of plank base material (2), and the dwell time is 30 min.
5. timber single face according to claim 1 and 2 top layer densification processing method is characterized in that: when the density of plank base material (2) impregnate layer (21) during greater than 0.6 g/cm3, then plank base material (2) is carried out charing and handle.
6. according to the prepared product of each described timber single face top layer densification processing method of claim 1-5, it is characterized in that: comprise plank base material (2), a surface of plank base material is one deck densification layer (21).
7. the prepared product of timber single face according to claim 6 top layer densification processing method is characterized in that: be filled with Lauxite and nano-calcium carbonate in the timber pore of said densification layer (21).
8. the prepared product of timber single face according to claim 7 top layer densification processing method, it is characterized in that: the thickness of said dense layer (21) is between 0.7mm ~ 3mm.
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| CN2012101805259A CN102672771A (en) | 2012-05-31 | 2012-05-31 | Single-side surface layer densification processing method and product for wood |
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Cited By (10)
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| CN103737678A (en) * | 2013-12-11 | 2014-04-23 | 中南林业科技大学 | Veneer densified glueing method |
| CN104400867A (en) * | 2014-07-09 | 2015-03-11 | 江西省林业科学院 | Preparation method capable of reducing paulownia wood resilience after compression |
| CN104786315A (en) * | 2014-09-18 | 2015-07-22 | 梁兆镛 | Modification processing process for oil palm trunk and oil palm board |
| CN105328752A (en) * | 2015-11-05 | 2016-02-17 | 华南农业大学 | Manufacturing method of impreg sheet |
| CN105948821A (en) * | 2016-04-27 | 2016-09-21 | 航天材料及工艺研究所 | Lightweight carbon fiber thermal insulation material surface pore-sealing method |
| CN106378843A (en) * | 2016-11-28 | 2017-02-08 | 赛为木业（石首）有限公司 | Furfuralcohol polymer impregnated wood material and preparation method thereof |
| CN110171042A (en) * | 2019-05-16 | 2019-08-27 | 华南农业大学 | A kind of environmental protection stable type surface layer impregnated timber and preparation method thereof |
| CN113733273A (en) * | 2021-08-24 | 2021-12-03 | 广西大学 | Wood weight increasing and hardening method |
| CN114407150A (en) * | 2022-01-27 | 2022-04-29 | 广东祥通供应链管理有限公司 | Energy-saving preparation method of environment-friendly functional wood |
| CN114800721A (en) * | 2022-04-15 | 2022-07-29 | 千年舟新材科技集团股份有限公司 | Wood modifier and wear-resistant veneer integrated board using same |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737678B (en) * | 2013-12-11 | 2015-05-27 | 中南林业科技大学 | Veneer densified glueing method |
| CN103737678A (en) * | 2013-12-11 | 2014-04-23 | 中南林业科技大学 | Veneer densified glueing method |
| CN104400867A (en) * | 2014-07-09 | 2015-03-11 | 江西省林业科学院 | Preparation method capable of reducing paulownia wood resilience after compression |
| CN104400867B (en) * | 2014-07-09 | 2017-03-15 | 江西桐源林业科技有限公司 | A kind of preparation method for reducing paulownia wood compression rebound |
| CN104786315A (en) * | 2014-09-18 | 2015-07-22 | 梁兆镛 | Modification processing process for oil palm trunk and oil palm board |
| CN105328752A (en) * | 2015-11-05 | 2016-02-17 | 华南农业大学 | Manufacturing method of impreg sheet |
| CN105948821B (en) * | 2016-04-27 | 2019-05-24 | 航天材料及工艺研究所 | A kind of lightweight carbon fiber heat insulation material surface method for sealing |
| CN105948821A (en) * | 2016-04-27 | 2016-09-21 | 航天材料及工艺研究所 | Lightweight carbon fiber thermal insulation material surface pore-sealing method |
| CN106378843A (en) * | 2016-11-28 | 2017-02-08 | 赛为木业（石首）有限公司 | Furfuralcohol polymer impregnated wood material and preparation method thereof |
| CN110171042A (en) * | 2019-05-16 | 2019-08-27 | 华南农业大学 | A kind of environmental protection stable type surface layer impregnated timber and preparation method thereof |
| CN110171042B (en) * | 2019-05-16 | 2021-01-05 | 华南农业大学 | Environment-friendly stable surface-impregnated wood and preparation method thereof |
| CN113733273A (en) * | 2021-08-24 | 2021-12-03 | 广西大学 | Wood weight increasing and hardening method |
| CN114407150A (en) * | 2022-01-27 | 2022-04-29 | 广东祥通供应链管理有限公司 | Energy-saving preparation method of environment-friendly functional wood |
| CN114800721A (en) * | 2022-04-15 | 2022-07-29 | 千年舟新材科技集团股份有限公司 | Wood modifier and wear-resistant veneer integrated board using same |
| CN114800721B (en) * | 2022-04-15 | 2024-03-29 | 千年舟新材科技集团股份有限公司 | Wood modifier and wear-resistant facing integrated plate using same |
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Application publication date: 20120919 |