CN104369243A - Ultrasonic-assisted wood veneer dyeing method - Google Patents

Ultrasonic-assisted wood veneer dyeing method Download PDF

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Publication number
CN104369243A
CN104369243A CN201410768611.0A CN201410768611A CN104369243A CN 104369243 A CN104369243 A CN 104369243A CN 201410768611 A CN201410768611 A CN 201410768611A CN 104369243 A CN104369243 A CN 104369243A
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dye liquor
dye
wood
veneer
dyeing
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CN104369243B (en
Inventor
高建民
刘毅
郭洪武
胡极航
陈绍禹
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Beijing Forestry University
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Beijing Forestry University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K5/00Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/02Staining or dyeing wood; Bleaching wood

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The invention discloses an ultrasonic-assisted wood veneer dyeing method. The method includes the steps of wood pretreatment; placing pretreated wood veneers into a dye vat and injecting dye liquor into the dye vat; opening a circulating system to enable the dye liquor to flow circularly in the dye vat, opening a heating system after the dye liquor circulates stably, opening an ultrasonic assisting system after the dye liquor reaches the set temperature, and subjecting the wood veneers to ultrasonic treatment. The ultrasonic-assisted wood veneer dyeing method has the advantages that ultrasonic treatment and wood veneer dyeing are conducted simultaneously, dyeing efficiency is high, and pressure equipment is not required; by means of ultrasonic treatment, new fluid passageways in wood are broken through, new dye molecule sorption sites are provided, dye liquor activation energy is improved, wood permeability can be improved, dye dye-uptake rate can be increased, dyeing time is shortened, dyeing temperature is lowered, dyeing effects are enhanced, and the method is applicable to thick veneers and is energy saving and efficient.

Description

A kind of method of ultrasonic assistant wood veneer dyeing
Technical field
The present invention relates to a kind of wood staining method, particularly a kind of method of ultrasonic assistant wood veneer dyeing.
Background technology
Wood staining is the emerging technology realizing artificial forest fast growing wood efficiency utilization, can be improved the vision quality of fast growing wood by dyeing, imitated famous and precious timber.Stained wood both can meet the demand of people to medium-to-high grade decorative timber, can promote again the added value of fast growing wood.At present, stained wood product has been applied to Furniture manufacture, indoor decorating, floor and the field such as artificial board decorative, handicraft, achieves significant economic results in society.Wood staining is dye molecule in dye liquor in the process of wood surface and inner constantly wetting, diffusion, infiltration, sorption.Therefore, dye molecule the infiltration in wood and Color of degree of absorption to wood single-plate is most important wants.But the fluid permeability passage in timber, particularly interconnection is considerably less.Usually, along with the increase of wood single-plate thickness, the permeability of dyestuff significantly declines.
At present, wood staining generally adopts conventional dip method, and this kind of method exists the problem that dyeing time is long, dye-uptake is low, poor permeability, wastewater flow rate are large, and is only applicable to thin veneer.For thick veneer, need special equipment, carry out under high-temperature pressurizing or circulation pressurization-depressurization condition, this kind of method is high to equipment requirement, energy consumption large, maintenance and repair cost is high, and it is uneven to dye.Patent CN1817587A discloses a kind of method of thin wood plate extruding dyeing, is immersed by wood single-plate in dye liquor, and dye liquor sucks in timber by the negative pressure utilizing veneer to produce when leaving paired compression roller, thus realizes the bulk dyeing of veneer.Patent CN101125433A discloses the wood staining method that a kind of supercharging-decompression combines, and timber and dye liquor is placed in closed container, pressure lifting in conditioning chamber, causes dye liquor to move and realize the dyeing of timber by timber external and internal pressure difference.Patent CN1785622A discloses a kind of manufacture method of dyed poplar wood floor of high abrasion, sticks colored single palte on the top layer of poplar plywood, then pressing high abrasion bond paper, thus improves the class of poplar wood floor.Patent CN1736673A discloses a kind of method of environment-friendly type wood staining, by vacuum pressed, coloring agent is impregnated into wood internal, temperature 92 ~ 93 DEG C, pressure 1.3 ~ 5MPa, pressurize 18 ~ 20h.Patent CN1207336A discloses the method for a kind of standing tree dyeing, makes dye liquor penetrate into treetop along trees tissue from root growth period at broad-leaved small dimension wood, thus realizes standing tree dyeing.Patent CN101229646A discloses a kind of wood staining method utilizing Microwave Pretreatment, by the drying of wood to moisture content 20 ~ 40%, uses microwave preheating process, then by with process after timber be immersed in normal temperature dyeing liquor, dipping 30 ~ 240min.Patent CN201371490Y discloses the strengthening of a kind of timber, dyeing hybrid system multifunction automatic vacuum pressure assembling device, and timber proofing strengthening and dyeing are compound in one by this kind of method.Patent CN1326846A discloses the method for a kind of paulownia single board imitating red sandalwood dyeing, the paulownia single board of bleaching is put into dye vat, is warming up to 90 DEG C and is incubated 4h.Patent CN101306546A discloses a kind of novel pearly wood single plate coloring agent, coloring agent is made up of dyestuff, dye leveller, accelerant, color-fixing agent and bleeding agent, wood single-plate is dye in the dye liquor of 75 DEG C 60min, afterwards fixation 30min in temperature, can realize the level dyeing of wood single-plate.Patent CN101367222A discloses a kind of physical dyeing method for lumber, is heat-treated by wood single-plate at hot press, and temperature is 230 ~ 280 DEG C, and the time is 5 ~ 120min, and utilize timber to issue in heat effect the look that changes, the method does not need chemical dye.Patent CN1424186A discloses the method for a kind of wood fumigation dyeing, timber is put into the sulfate liquor boiling 3 ~ 4h configured, and takes out washing, then fumigates painted 1 ~ 2h with fumigation liquid, soaks 10 ~ 20min afterwards, finally wash oven dry in fixation liquid.Patent CN1672886A discloses a kind of method of log dyeing, is less than after 8% by Logs drying to moisture content, adopts hot pressing-normal pressure-hot pressing-atmospheric processes circular treatment, thus realizes the dyeing of log.Patent CN102241049 discloses a kind of method of fresh log dyeing, adopts pulsed impregnating equipment, utilizes circulation pressure reduction that dye liquor is squeezed into wood internal.The above patent is mostly thin veneer and contaminates under constant-pressure and high-temperature, or thick veneer high-temperature pressurizing is contaminated, and dyeing length consuming time, energy consumption be large, it is uneven to dye, or need complicated pretreating process, equipment requirement high, complex process.
Under the present invention is directed to condition of normal pressure, wood veneer dyeing is uneven, dyestuff penetration is poor, the technical bottleneck that particularly thick veneer dye is not saturating, based on timber penetration dyeing mechanism, and the cavitation effect of ultrasonic wave uniqueness, mechanism and fuel factor, propose one in atmospheric conditions, be particularly applicable to the colouring method of the thick veneer of timber.The method can shorten dyeing time, reduces dyeing temperature, improve wood permeability and dyeing uniformity, is a kind of wood staining method of efficient energy-saving, environmental protection.The method extends the application of sonochemistry, simplifies the production stage of wood staining, improves timber volume recovery and wood staining production efficiency.The method does not need the pressure dyeing installation of complex and expensive, can on the basis of existing atmospheric pressure device upgrading, to promotion artificial forest efficiency utilization, there is important ecological environment benefit, there is good economic and social benefits and promotion prospect.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of method of ultrasonic assistant wood veneer dyeing, step comprises:
10) timber pretreatment;
20) pretreated wood single-plate is put into dye vat, and dye liquor is injected in dye vat;
30) making dye liquor at dye vat internal circulation flow, when starting heating system after dye liquor cyclo-stationary, starting to heat dye liquor, when dye liquor reaches design temperature, use ultrasonic wave wood single-plate to be carried out to the ultrasonic wave process of certain time.
Preferred version is: described step 10 comprises following sub-step:
11) timber is peeled into the veneer meeting staining stand dimensions, this veneer thickness is 0.5 ~ 1.5mm;
12) part that veneer has major defect is rejected;
13) veneer gas is done to moisture content < 8% and sanding veneer surface;
14) veneer is loaded in staining stand.
Preferred version is: the collocation method of described dye liquor is: in mixer, certain density single dyestuff dye liquor or the composite dye liquor of multiple dyestuff is configured according to aim colour, dyestuff is stirred after adding buffer and accelerant, add Ph conditioning agent after dyestuff is uniformly dissolved, regulate dye liquor to suitable Ph value.
Preferred version is: when dye liquor floods staining stand completely and is full of dyestuff in staining bath, make dye liquor start to circulate.
Preferred version is: further comprising the steps of after described step 30:
40) staining stand is sling on dye vat;
50) after dye liquor drains, colored single palte surface loose colour is washed away with water;
60) staining stand entirety is moved to drying room, use blower fan that colored single palte is dried to moisture content < 10%;
70) veneer is unloaded, and by its stacking.
Preferred version is: in described step 30, dye liquor circulating as single cycle flowing or Two-way Cycle flowing in dye vat.
Preferred version is: in described step 30, according to the display of dye liquor monitor, adds dye liquor or water in dye vat, thus timely adjustment dye liquor composition.
Preferred version is: in described step 30, and the mode of heating of heating system divides two kinds, and a kind of is electrical heating, and one is Steam Heating.
Preferred version is: in described step 30, can Real-Time Monitoring dye liquor temperature according to temperature polling instrument.
Preferred version is: staining stand and dye vat are stainless steel and staining stand is multistory frame structure and is stainless steel.
Advantage of the present invention is:
1, ultrasonic wave process and wood veneer dyeing carry out simultaneously, and staining efficiency is high.
2, do not need press device, complete by upgrading on the basis of existing dyeing at normal pressure equipment, technological operation is simple, has good economic and social benefits and promotion prospect.
3, Sonication assisted treatment, get through fluid passage new in timber, provide new dye molecule sorption site, improve dye liquor activation energy, wood permeability and dyestuff dye-uptake can be promoted, shorten dyeing time, reduce dyeing temperature, promote Color, and be applicable to thick veneer, there is energy-conservation, efficient feature.
4, after the process of this dyeing, even dyeing inside and outside veneer, remains the original structure of timber and texture, directly veneer can be dyed the color of famous and precious timber by the allotment of dyestuff, thus improves utilization rate and the added value of artificial forest fast growing wood.
Accompanying drawing explanation
Fig. 1 is the structural representation of dyeing installation of the present invention;
Wherein: 1-mixer, 2-agitator, 3-charge pump, 4-inlet valve, 5-dye vat lid, 6-staining stand, 7-ultrasonic transmitter and transducer, 8-temperature polling instrument, 9-dye liquor monitor, 10-electric heater, 11-air inlet, 12-steam generator, 13-hydraulic valve, 14-discharge opeing (desilting) mouth, 15-circulating pump
Fig. 2,3,4,5 is dye-uptake and the Color figure of colored single palte under coloured differently condition;
Fig. 6,7,8,9 is the shape characteristic of wood single-plate under ul-trasonic irradiation under coloured differently condition.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, and step comprises:
1) timber is peeled into the veneer meeting staining stand dimensions, thickness is 0.5 ~ 1.5mm;
2) part that veneer has major defect is rejected;
3) veneer gas done to moisture content < 8% and use sand paper sanding veneer surface;
4) by the veneer regular loading stainless steel staining stand after screening, staining stand is made by stainless steel, multistory frame structure, during dyeing, wood single-plate is placed in one, prevent veneer bonding in dyeing course, effective guarantee veneer fully contacts with dye liquor fluid, makes single-plate dyeing even;
5) staining stand entirety is put into dye vat, dye vat is stainless steel rectangular cylinder body, and cylinder internal volume is 0.5 ~ 3m 3, cylinder body wall thickness 2 ~ 5mm, additional rock wool heat-preservation layer;
6) dye liquor configuration;
In mixer 1, configure certain density single dyestuff dye liquor according to aim colour or multiple dyestuff composite, add buffer and accelerant, turn on agitator 2, dyestuff be uniformly dissolved, add Ph conditioning agent, regulate dye liquor to suitable Ph value;
7) dye liquor enters cylinder
Dyestuff is modulated in mixer 1, dye well auxiliary agent is fully dissolved, mix, control dye liquor addition by charge pump 3 and inlet valve 4 and add speed, open inlet valve and feed pump, dye liquor is pumped in dye vat, to flooding staining stand completely, and be full of dyestuff in staining bath, in dyeing course, because wood single-plate is different to dye absorber different types of in composite dye liquor, simultaneously due to the evaporation of moisture, need by dye liquor logging Real-time Feedback dye liquor concentration and composition, thus in mixer, add new dyestuff or water, regulate and control the dye liquor in dye vat,
8) ON cycle system
Open single cycle or Two-way Cycle, dye liquor is circulated in dye vat, regulates circulation rate by hydraulic valve 13.The circulatory system is made up of hydraulic valve 13, discharge opeing (desilting) mouth 14, circulating pump 15, filter screen and subsidiary pipeline.The effect of the circulatory system promotes dye liquor flowing, increases the diffusion velocity of dye molecule, shorten dyeing time, makes single-plate dyeing even simultaneously, ensure the dyeing quality with batch colored single palte.Endless form has single cycle and Two-way Cycle.Single cycle mode is single cycle pump one-way circulation, and internal circulating load is little.Two-way Cycle mode adopts Two-way Cycle pump cross-circulation, and internal circulating load is large.Cycle rate can be regulated according to actual needs by hydraulic valve 13.The filter net device filtration of circulating line import department, can the foreign material such as filtering wood chip, prevent pipeline blockage;
9) heating system is opened
Treat that dye liquor circulates steadily, now wood single-plate surface is wetting, and open heating system, heating system is made up of temperature polling instrument 8, electric heater 10, air inlet 11, steam generator 12.By temperature polling instrument 8 Real-Time Monitoring dye liquor temperature.Mode of heating divides two kinds, and a kind of is electrical heating, and one is Steam Heating;
10) ultrasonic assistant dyeing
When dye liquor is heated to the temperature set, heating-up temperature opens heat insulation function, now, opens ultrasonic transmitter 7, according to veneer thickness and kind of dyes, concentration adjustment ultrasonic power, frequency and ultrasonic time.Because the evaporation of moisture and veneer are to the absorption of dyestuff, show according to dye liquor monitor 9 in good time, open charging valve, dye liquor or water is added in dye vat, ultrasonic assistant system is made up of ultrasonic transmitter 7 and transducer, according to the kind of colored single palte, dye particle and quality requirement, by regulating transmitter 7 and transducer, hyperacoustic transmitting power and frequency of sound wave can be controlled;
11) after reaching setting dyeing time, open dye vat lid 5, staining stand 6 is sling on dye vat, after dye liquor drains, wash away colored single palte surface loose colour with running water, afterwards staining stand entirety is moved to drying room, open blower fan, colored single palte is dried to moisture content < 10%, unloads plate, stacking.On the other hand, the dye liquor composition after utilizing the analysis of dye liquor monitor to dye, the component of allotment and supplementary disappearance, can start the dyeing of new round veneer.
Embodiment 1
Become by Fast growth poplar rounding thickness to be the veneer of 1.5mm, being tailored into breadth is 850mm*560mm veneer, rejects defectiveness position, is dried to moisture content < 8%, with 200 order sandpaperings surfaces, and loading staining stand.
In mixer, allocate Acid Brilliant Scarlet GR (C.I.AcidRed 73) dye liquor that dyestuff mass fraction is 0.15% respectively, add the anhydrous Na of 0.15% 2sO 4as buffer, add the accelerant NaCl of 1%, turn on agitator, dyestuff is fully dissolved, slowly dripping concentration is the H of 10% 2sO 4solution, regulates dye liquor Ph value to 4.0.
Dyestuff is pumped into dye vat, and open dye liquor single loop system, after dye liquor steady-state cycle, opening electric heater, is heated to 80 DEG C by dye liquor, opens ultrasonic transmitter, and regulate ultrasonic power to be 0W, 120W, 240W or 300W, frequency is 20KHz, process 2h.After reaching dyeing time, open dye vat lid 5, staining stand 6 is hung out, wash away colored single palte surface loose colour with running water, staining stand 6 entirety is moved to drying room, opens blower fan, colored single palte is dried to moisture content < 10%, unloads plate, stacking.Fig. 2 is dye-uptake and the Color figure that ultrasonic power is respectively the colored single palte of 0W, 120W, 240W and 300W.Figure intermediate cam is designated dye-uptake, and square is designated aberration, and Fig. 6 is ultrasonic power when being 200W, and Sonication assisted treatment promotes the mechanism figure of wood staining effect.
Embodiment 2
Become by birch rounding thickness to be the veneer of 1.5mm, being tailored into breadth is 850mm*560mm veneer, rejects defectiveness position, is dried to moisture content < 8%, with 200 order sandpaperings surfaces, and loading staining stand.
In mixer, allocate Acid Brilliant Scarlet GR (the C.I.Acid Red 73) dye liquor that dyestuff mass fraction is 0.09%, 0.12% or 0.15% respectively, add the anhydrous Na of 0.15% 2sO 4as buffer, add the accelerant NaCl of 1%, turn on agitator, dyestuff is fully dissolved, slowly dripping concentration is the H of 10% 2sO 4solution, regulates dye liquor Ph value to 4.0.
Dyestuff is pumped into dye vat, opens dye liquor binary cycle system, after dye liquor steady-state cycle, open steam heater, dye liquor is heated to 80 DEG C, open ultrasonic transmitter, adjustment ultrasonic power is 300W, and frequency is 20KHz, process 2h.After reaching dyeing time, open dye vat lid, staining stand is hung out, wash away colored single palte surface loose colour with running water, staining stand entirety is moved to drying room, opens blower fan, colored single palte is dried to moisture content < 10%, unloads plate, stacking.Dye-uptake and the Color figure of Fig. 3 to be mass fraction be Acid Brilliant Scarlet GR (C.I.Acid Red 73) colored single palte of 0.09%, 0.12% and 0.15%.Figure intermediate cam is designated dye-uptake, and square is designated aberration, Fig. 7 to be mass fraction be 0.15% Acid Brilliant Scarlet GR (during C.I.Acid Red 73, Sonication assisted treatment promotes the mechanism figure of wood staining effect.
Embodiment 3
Become by Chinese parasol tree rounding thickness to be the veneer of 1.2mm, being tailored into breadth is 850mm*560mm veneer, rejects defectiveness position, is dried to moisture content < 8%, with 200 order sandpaperings surfaces, and loading staining stand.
In mixer, allocate Acid Brilliant Scarlet GR (C.I.AcidRed 73) dye liquor that dyestuff mass fraction is 0.15% respectively, add the anhydrous Na of 0.15% 2sO 4as buffer, add the accelerant NaCl of 1%, turn on agitator, dyestuff is fully dissolved, slowly dripping concentration is the H of 10% 2sO 4solution, regulates dye liquor Ph value to 4.0.
Dyestuff is pumped into dye vat, and open dye liquor single loop system, after dye liquor steady-state cycle, opening electric heater, is heated to 80 DEG C by dye liquor, and open ultrasonic transmitter, adjustment ultrasonic power is 300W, and frequency is 20KHz, process 1h, 2h, 3h, 4h or 5h.After reaching dyeing time, open dye vat lid, staining stand is hung out, wash away colored single palte surface loose colour with running water, staining stand entirety is moved to drying room, opens blower fan, colored single palte is dried to moisture content < 10%, unloads plate, stacking.Dye-uptake and the Color figure of Fig. 4 to be the processing time be colored single palte being respectively 1h, 2h, 3h, 4h and 5h.Figure intermediate cam is designated dye-uptake, and square is designated aberration.Fig. 8 is the processing time when being 2h, and Sonication assisted treatment promotes the mechanism figure of wood staining effect.
Embodiment 4
Become by quick growth poplar wood rounding thickness to be the veneer of 1.2mm, being tailored into breadth is 850mm*560mm veneer, rejects defectiveness position, is dried to moisture content < 8%, with 200 order sandpaperings surfaces, and loading staining stand.
In mixer, allocate Acid Brilliant Scarlet GR (C.I.AcidRed 73) dye liquor that dyestuff mass fraction is 0.15% respectively, add the anhydrous Na of 0.15% 2sO 4as buffer, add the accelerant NaCl of 1%, turn on agitator, dyestuff is fully dissolved, slowly dripping concentration is the H of 10% 2sO 4solution, regulates dye liquor Ph value to 4.0.
Dyestuff is pumped into dye vat, and open dye liquor single loop system, after dye liquor steady-state cycle, opening electric heater, is heated to 60 DEG C, 70 DEG C or 80 DEG C by dye liquor, and open ultrasonic transmitter, adjustment ultrasonic power is 300W, and frequency is 20KHz, process 2h.After reaching dyeing time, open dye vat lid, staining stand is hung out, wash away colored single palte surface loose colour with running water, staining stand entirety is moved to drying room, opens blower fan, colored single palte is dried to moisture content < 10%, unloads plate, stacking.Fig. 5 is dye-uptake and the Color figure that dye liquor temperature is heated to 60 DEG C, 70 DEG C and the 80 DEG C colored single paltes being.Figure intermediate cam is designated dye-uptake, and square is designated aberration, and Fig. 9 is dye liquor when being heated to 60 DEG C, and Sonication assisted treatment promotes the mechanism figure of wood staining effect.
Embodiment 5
Become by quick growth poplar wood rounding thickness to be the veneer of 0.5mm, being tailored into breadth is 850mm*560mm veneer, rejects defectiveness position, is dried to moisture content < 8%, surperficial with 200 order sandpaperings.Load staining stand.
In mixer, allocate alkali blue 9 (the C.I.Basic Blue 9) dye liquor that dyestuff mass fraction is 0.12%, add the anhydrous Na of 0.15% 2sO 4as buffer, add the accelerant NaCl of 1%, turn on agitator, dyestuff is fully dissolved, slowly dripping concentration is the NaOH solution of 30%, regulates dye liquor Ph value to 9.0-10.0.
Dyestuff is pumped into dye vat, and open dye liquor single loop system, after dye liquor steady-state cycle, opening electric heater, is heated to 80 DEG C by dye liquor, and open ultrasonic transmitter, adjustment ultrasonic power is 240W, and frequency is 18KHz, process 2h.Close ultrasonic transmitter, add the color-fixing agent NaCO of 0.3% 3, isothermal holding 1h, hangs out staining stand afterwards, washes away colored single palte surface loose colour, staining stand entirety is moved to drying room, opens blower fan, colored single palte is dried to moisture content < 10%, unloads plate, stacking with running water.
Embodiment 6
Become by quick growth poplar wood rounding thickness to be the veneer of 1.5mm, being tailored into breadth is 850mm*560mm veneer, rejects defectiveness position, is dried to moisture content < 8%.Load staining stand.
In mixer, allocate the composite dye liquor that dyestuff mass fraction is 0.15%, the dyestuff adopted is Indian yellow, acid scarlet, acid orange, and mass ratio is 30: 65: 5.Add the anhydrous Na of 0.15% 2sO 4as buffer, turn on agitator, makes dyestuff fully dissolve, and slowly dripping concentration is the H of 10% 2sO 4solution, regulates dye liquor Ph value to 4.0.
Dyestuff is pumped into dye vat, and open dye liquor binary cycle system, after dye liquor steady-state cycle, opening electric heater, is heated to 80 DEG C by dye liquor, and open ultrasonic transmitter, adjustment ultrasonic power is 200W, and frequency is 25KHz, process 3h.Staining stand is hung out, washes away colored single palte surface loose colour with running water, staining stand entirety is moved to drying room, opens blower fan, colored single palte is dried to moisture content < 10%, unloads plate, stacking.
For above various dyeing treatment conditions, those skilled in the art specifically can allocate dyestuff needed for actual conditions, specifically regulate technological parameter.
Although embodiment of the present invention are open as above, but it is not restricted to listed in description and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.

Claims (10)

1. a method for ultrasonic assistant wood veneer dyeing, is characterized in that, step comprises:
10) timber pretreatment;
20) pretreated wood single-plate is put into dye vat, and dye liquor is injected in dye vat;
30) making dye liquor at dye vat internal circulation flow, when starting heating system after dye liquor cyclo-stationary, starting to heat dye liquor, when dye liquor reaches design temperature, use ultrasonic wave wood single-plate to be carried out to the ultrasonic wave process of certain time.
2. the method for ultrasonic assistant wood veneer dyeing according to claim 1, is characterized in that, described step 10 comprises following sub-step:
11) timber is peeled into the veneer meeting staining stand dimensions, this veneer thickness is 0.5 ~ 1.5mm;
12) part that veneer has major defect is rejected;
13) veneer gas is done to moisture content < 8% and sanding veneer surface;
14) veneer is loaded in staining stand.
3. the method for ultrasonic assistant wood veneer dyeing according to claim 1, it is characterized in that, the collocation method of described dye liquor is: in mixer, certain density single dyestuff dye liquor or the composite dye liquor of multiple dyestuff is configured according to aim colour, dyestuff is stirred after adding buffer and accelerant, add Ph conditioning agent after dyestuff is uniformly dissolved, regulate dye liquor to suitable Ph value.
4. the method for ultrasonic assistant wood veneer dyeing according to claim 2, is characterized in that, when dye liquor floods staining stand completely and is full of dyestuff in staining bath, makes dye liquor start to circulate.
5. the method for ultrasonic assistant wood veneer dyeing according to claim 1, is characterized in that, further comprising the steps of after described step 30:
40) staining stand is sling on dye vat;
50) after dye liquor drains, colored single palte surface loose colour is washed away with water;
60) staining stand entirety is moved to drying room, use blower fan that colored single palte is dried to moisture content < 10%;
70) veneer is unloaded, and by its stacking.
6. the method for ultrasonic assistant wood veneer dyeing according to claim 1, is characterized in that, in described step 30, and dye liquor circulating as single cycle flowing or Two-way Cycle flowing in dye vat.
7. the method for ultrasonic assistant wood veneer dyeing according to claim 1, is characterized in that, in described step 30, according to the display of dye liquor monitor, adds dye liquor or water in dye vat, thus timely adjustment dye liquor composition.
8. the method for ultrasonic assistant wood veneer dyeing according to claim 1, is characterized in that, in described step 30, the mode of heating of heating system divides two kinds, and a kind of is electrical heating, and one is Steam Heating.
9. the method for ultrasonic assistant wood veneer dyeing according to claim 1, is characterized in that, in described step 30, and can Real-Time Monitoring dye liquor temperature according to temperature polling instrument.
10. the method for ultrasonic assistant wood veneer dyeing according to claim 1, is characterized in that, staining stand and dye vat are stainless steel and staining stand is multistory frame structure and is stainless steel.
CN201410768611.0A 2014-12-12 2014-12-12 A kind of method of ultrasonic assistant wood veneer dyeing Expired - Fee Related CN104369243B (en)

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CN106272821A (en) * 2016-09-20 2017-01-04 阜南县环宇柳木工艺制品有限公司 A kind of bamboo wood for basketmaking processes technique
CN110434967A (en) * 2019-07-25 2019-11-12 青岛大学 A kind of wood veneer dyeing method
CN110450251A (en) * 2019-07-12 2019-11-15 浙江水墨江南新材料科技有限公司 A kind of wood skin dyeing infuser device and wood skin dyeing treatment
CN110466022A (en) * 2019-07-25 2019-11-19 青岛大学 A kind of wood veneer dyeing method
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CN110466022A (en) * 2019-07-25 2019-11-19 青岛大学 A kind of wood veneer dyeing method
CN114953075A (en) * 2022-05-09 2022-08-30 浙江升华云峰新材股份有限公司 Preparation method of high-color-fastness recombined decorative veneer
CN114953075B (en) * 2022-05-09 2023-08-08 浙江升华云峰新材股份有限公司 Preparation method of high-color-fastness recombined decorative veneer

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