CN108789706A

CN108789706A - A kind of ancient building does old processing method with timber

Info

Publication number: CN108789706A
Application number: CN201810636076.1A
Authority: CN
Inventors: 程爱妃
Original assignee: Tongxiang Wuzhen Neli Antique Garden Construction Co Ltd
Current assignee: Tongxiang Wuzhen Neli Antique Garden Construction Co Ltd
Priority date: 2018-06-20
Filing date: 2018-06-20
Publication date: 2018-11-13

Abstract

The invention discloses a kind of ancient buildings to do old processing method with timber, it is related to building timber technology field, aim to solve the problem that entire timber does old process and has uncontrollability, it is difficult to that privileged site is carried out to do old processing, the problem of old degree is done in bad control simultaneously, technical points are：S1, base material treatment；S2, configuration maceration extract；S3, it needs to do former subordinates point to timber and waxes, and stood at normal temperatures until wax coagulation forming；S4, the remainder of timber in step S3 is smeared to preservative, and timber in step S3 is done into former subordinates point and carries out paraffin removal；S5, using vacuum pressed dipping by the way of, timber is entirely immersed in immersion treatment 1-2h in maceration extract；S6, cleaning；S7, corona treatment；S8, secondary polishing；S9, it is impregnated using aqueous solution of urea, and so that it is naturally dried to water content and be less than 15% or less.The invention enables do old uniform in effect, naturally, processing deeper into, thoroughly, moreover it is possible to the time for doing old processing is greatly shortened.

Description

A kind of ancient building does old processing method with timber

Technical field

The present invention relates to building timber technology fields more particularly to a kind of ancient building to do old processing with timber Method.

Background technology

Although the process of current modernization and urbanization is constantly being accelerated, emerging construction material is also persistently emerging in large numbers, mistake Going ancient type to build between modern functionsization building on either surface topography or in mentality of designing still has in certain Contact, this contact transmits new epoch information, reacts the fashion pursuit of people of contemporary people.Pursue examining for antiquated style crowd Beauty is read more and more close to pseudo-classicization and it is desirable that therefrom obtain historical information, experiences the humane breath of inherence and special culture Intension has promoted the quietly rise for making timeworn furniture for this kind of pursuit group.

Existing notification number is that the Chinese patent of CN104589438A discloses a kind of antique-imitation method of jujube wood, including with Lower step：(1), wood surface is cleaned up and is dried；(2), water is added to be configured to the White wine pit of weight ratio 25% white spirit pit mud Mud solution；(3), the timber for handling step (1) well is using white spirit pit mud solution immersion treatment 30min made from step (2), so After take out, keep the temperature 5h at 22 DEG C；(4), the timber for handling step (3) well is cleaned using 5% sodium bicarbonate solution, is washed away Then timber is handled 3h by the mud of wood surface under the conditions of 70 DEG C, relative humidity 48%, be then cooled to 0 DEG C rapidly, processing 15min；(5), the wood surface for handling step (4) well is polished using the sand paper of 2000 mesh, then uses 10% pit mud molten Liquid impregnates 1h, then keeps the temperature 48h at 18 DEG C, the mud of wood surface is washed away using clear water, quick lime is sprinkled in wood surface, locates 1.5h is managed, clear water is then reused and rinses well；(6), the timber of handling step (5) well is in 42 DEG C, relative humidity 78% Under the conditions of handle 10h.

But the program is handled wood surface using the microorganism in white spirit pit mud liquid, therefore for entire Timber, which does old process, has uncontrollability, it is difficult to carry out doing old processing to privileged site, while old degree is done in bad control.

Invention content

The object of the present invention is to provide a kind of ancient buildings to do old processing method with timber, can timber appointed part into Row, which does old processing and controls, does old degree, to have flexible operability.

The present invention above-mentioned technical purpose technical scheme is that：

A kind of ancient building does old processing method with timber, includes the following steps：

S1, base material treatment：Wood surface is polished, clean, is dried；

S2, configuration maceration extract：8-12 parts of green peel of walnut juice, 4-5 parts of bamboo charcoal powder, 12-14 parts of thifluzamide, acrylic resin 3-5 Part, 5-7 parts of citronellol, 2-3 parts of benzene sulfinic acid sodium salt, 1-2 parts of methyl ethyl ketone, 2-4 parts of butyric acid leaf-alcohol ester, 5-7 parts of palm wax, water 100 parts；

S3, upper Lasaxing Oilfield：It needs to do former subordinates point to timber to wax, and is stood at normal temperatures until wax coagulation forming；

S4, preservative treatment：The remainder of timber in step S3 is smeared into preservative, timber in step S3 is done into former subordinates point therewith Carry out paraffin removal so that wood surface can be in contact with air；

S5, dipping：By the way of vacuum pressed dipping, timber is entirely immersed in the maceration extract of step S2 configurations at immersion Manage 1-2h；

S6, cleaning：The maceration extract that wood surface is cleaned using sodium bicarbonate solution reuses clear water wood surface cleaning is dry Only；

S7, corona treatment：Timber is quiet at high temperature to put 2-3h, the low temperature for then utilizing atmospheric dielectric barrier discharge to generate Plasma is handled；

S8, secondary polishing：Fine grinding processing is carried out to wood surface；

S9, intensive treatment：Timber 12-13h is impregnated using aqueous solution of urea, is cleaned up using clear water after pulling out, and place 2-3 Angel its naturally dry to water content less than 15% hereinafter,.

By using above-mentioned technical proposal, entirety can efficiently do timber old in the method for multi step strategy so that do Old uniform in effect, naturally, processing deeper into, thoroughly, moreover it is possible to the time for doing old processing is greatly shortened；Specifically, it will pre-process Timber needs it to do old part afterwards carries out upper Lasaxing Oilfield using mold, so that it is done former subordinates position and is coated with Chinese wax block, then to Remaining position brushing preservative of timber, due to upper wax excessively, preservative, which will not be applied to, does former subordinates position, and does not wax The rest part of processing, which absorbs, can play the role of follow-up maceration extract after preservative anti-oxidation, etch-proof, realize to timber spy Determine the effect that position do old processing；Then after paraffin removal exposure do former subordinates point can impregnated liquid corrode, wherein bamboo charcoal powder, Old color is done in the intensification of green peel of walnut juice, and thifluzamide, methyl formate fungus and mildew resistance, butyric acid leaf-alcohol ester, palm wax raising product are steady It is qualitative, play the role of fixation training source, and coordinate vacuum pressed dipping technique, has and quickly penetrate into lumber fibre and do not influence wood The advantages of material inner structural strength, to which effectively old degree is done in control, old treatment effect is done in promotion；Finally rely at plasma Reason and urea liquid immersion treatment realize the reparation for doing old timber, keep doing the time of old effect with prolonging wood.

Further, in the step S2, green peel of walnut is pulverized into the particulate matter that diameter is less than 5mm, and add wherein Enter to be equivalent to the hydrochloric acid solution of 1.5 times of own wt, the mass concentration of the solution is 12%, squeezes the juice after placing 2-3h, uses aperture 1-5 μm of filter membrane filters off impurity to obtain green peel of walnut juice.

By using above-mentioned technical proposal, the green peel of walnut juice prepared is while with certain erosion effect, also It can deepen its primary colors, so that it the thick and heavy texture of antiquated vicissitudes, texture is occurred, and ensure that it is small to wood internal corrosivity, does Old effect is natural.

Further, in the step S2, bamboo is fired into charcoal under conditions of 1200 DEG C, is ground into after Temperature fall Powder obtains bamboo charcoal powder after crossing 150-180 mesh sieve.

By using above-mentioned technical proposal, with coordinate green peel of walnut juice wood surface formed it is clear, continuous, uniform, from Right does old texture, avoids, using raw material toxic or excitatory, realizing the purpose to environment green non-pollution, and make It is simple to operation to make technique, it is of less demanding to technology, it can quantify to produce.

Further, in the step S4, after preservative treatment, to timber do it is old after rest part carry out at waxing Reason, the upper Lasaxing Oilfield use high melting-point wax.

By using above-mentioned technical proposal, timber do former subordinates point or because being coated with preservative on adjacent rest part, Maceration extract can be influenced to doing the erosion of former subordinates point, therefore does upper Lasaxing Oilfield again in the rest part of timber, realize preservative and leaching The isolation of stain liquid, then preservative will not interference effect do old effect；In conjunction with aforementioned schemes, if without coating preservative, Upper Lasaxing Oilfield directly is carried out in rest part, then maceration extract can occur, corruption occurs in the junction for doing former subordinates point and rest part Lose serious situation；High melting-point wax, fusing point is used to be higher than the wax in step S2 simultaneously, in step 4 paraffin removal processing procedure Certain temperature under, can will do the wax dissolving removal of former subordinates point.

Further, in the step S4, after paraffin removal is processed, former subordinates point coating attractant is done to timber, it is described to draw Lure is combination one or more in fulvic acid, lignin and humus.

By using above-mentioned technical proposal, former subordinates is done to timber and divides brushing attractant, there is the spy lured using attractant Point can induce in maceration extract microorganism to be intended to close and be attached to and do former subordinates point doing former subordinates point and smearing attractant, to It realizes that the former subordinates of doing of timber in a short time is just being damaged by corrosion respectively, reaches the aesthetic feeling of ancient grey mulberry, improve the additional of product Value.

Further, in the step S5, timber is positioned in vacuum pressure impregnation tank, is vacuumized, when vacuum degree reaches To after -0.2 to -0.1MPa, 15min is kept, the maceration extract configured is then rapidly injected, continues to keep 40min, hereafter It is forced into 0.1-0.5MPa, 50min is kept, slowly releases internal pressure, maceration extract is extracted out, takes out the timber after dipping.

By using above-mentioned technical proposal, timber is positioned in vacuum pressure impregnation tank, old effect is done according to dipping position The requirement difference of fruit is to control compression levels, by adjusting the permeability of maceration extract, to ensure the wood surface after vacuum pressed Totally, it is not necessarily to wiping, does old effect naturally, clean mark.

Further, in the step S6, before cleaning according to do it is old require to do old dose to complete wetting to brush, it is described to do Old dose includes 0.8-1 parts of potassium carbonate, 0.12-0.2 parts of potassium permanganate, 0.2-0.35 parts of copper sulphate, 0.6-0.78 parts of magnesium chloride, peach 15-18 parts of wood powder solution, 100 parts of water.

By using above-mentioned technical proposal, because by the way of vacuum pressure impregnation, the pressurization of impregnating autoclave is controlled Between 0.1-0.5MPa, more than the internal structure that this section is easily destroyed timber, therefore when not reached requirement as old effect, Continue to brush and does old dose to make processing deeper into more thoroughly.

Further, the preparation of the mahogany powder solution is will to be dried to water content less than 8% with grinding after peach branch peeling At mahogany powder, make mahogany powder with glacial acetic acid by 1:10 mass ratio is added to the container, and is stirred 15 minutes and is placed at 26 DEG C Activation process, ultrasonic power 160W are carried out under ultrasonic environment, the time is 10 minutes, and then addition is equivalent to mahogany silty 0.1% diatomite, 0.2% neopelex are measured, after being stirred 15 minutes with 200r/min rotating speeds, naturally cools to room Temperature filters off impurity to obtain mahogany powder solution with 11-15 μm of the filter membrane in aperture.

By using above-mentioned technical proposal, the old dose of main component of doing of configuration is mahogany powder solution, makes mahogany powder and ice vinegar Acid is mixed, and is placed under ultrasonic environment and carries out activation process, adds diatomite and neopelex therewith, makes Old dose, which must be done, quickly to penetrate into lumber fibre, not only improved by the synergistic effect between each ingredient and done old effect but also improve The preservation of timber against decay ability causes integral strength to decline to generate strong corrosion to timber.

Further, in the step S7, the time of the Low Temperature Plasma Treating timber is 16-18s, dielectric impedance The power supply of electric discharge is high-frequency and high-voltage power supply, frequency 2kHz-2.4kHz, voltage range 3kV-3.4kV.

By using above-mentioned technical proposal, using Low Temperature Plasma Treating timber, and control time 16 to 18 seconds it Between, uniform, continuous old trace can be formed in wood surface, use for a long time will not fade.

Further, in the step S9, the mass concentration of the aqueous solution of urea is 1.4%, and timber is soaked at 46 DEG C 12-13h is steeped, is cleaned up with clear water after pulling out, it is quiet under conditions of 10 DEG C, relative air humidity are 40% to put 2-3 days, make it It naturally dries to water content and is less than 15% or less.

It places it in aqueous solution of urea and soaks to timber into trip temperature intensive treatment by using above-mentioned technical proposal Bubble, on the one hand can improve the old effect of doing of abovementioned steps, on the other hand improve and do old stability, play the work for repairing timber With to prevent the erosion of moth.

In conclusion the invention has the advantages that：

1, when timber is immersed in maceration extract, internal component has specific aim to the erosion of wood surface, can only make to timber It is eroded with the position of mold waxing for the first time, and attractant is set and to corrode efficient, embody this processing technology The position that timber is etched has controllability, some needs in privileged site do with the timber of old processing to operate；

2, timber is positioned in vacuum pressure impregnation tank, the requirement difference of old effect is done to control pressurization journey according to dipping position Degree effectively controls timber and does old degree, old treatment effect is done in promotion that is, by adjusting the permeability of maceration extract；

3, by the immersion of Low Temperature Plasma Treating and urea liquid come for timber do it is old after reparation, improve timber do it is old Stability, extend whole service life, it is ensured that it is colour-fast.

Specific implementation mode

Embodiment 1：

S1, base material treatment：It is once polished wood surface using 60-80 mesh sand paper, fine grinding depth is 3mm, then will be wooden It is placed on that relative air humidity is 50%, temperature is 30 DEG C of environment down toward drying after material cleaning；

Wherein, the preparation method of green peel of walnut juice is green peel of walnut to be pulverized into the particulate matter that diameter is less than 5mm, and add wherein Enter to be equivalent to the hydrochloric acid solution of 1.5 times of own wt, the mass concentration of the solution is 12%, squeezes the juice after placing 2-3h, uses aperture 1-5 μm of filter membrane filters off impurity to obtain green peel of walnut juice, and the preparation method of bamboo charcoal powder is the condition by bamboo at 1200 DEG C Under be fired into charcoal, pulverize after Temperature fall, cross 150-180 mesh sieve after obtain bamboo charcoal powder；

S3, upper Lasaxing Oilfield：Have effigurate mold frame using round and rectangle etc. and be fitted in wood surface, and uses tool There is the mud of viscosity to echo at the gap of mold frame and wood surface, definition is to do by the Timber sections that mold frame surrounds Former subordinates point is directed to demand and implements to do old processing to the part, to pour into the liquid after melting into timber mold frame Shape Chinese wax, and back and forth scraped using scraper plate and stopped afterwards for several times, it stands and waits for that Chinese wax is completely solidified into type to complete to doing former subordinates point Waxing；

S4, preservative treatment：The remainder of timber in step S3 is smeared into preservative, quaternary ammonium salt is used in inventing this embodiment As preservative, timber in step S3 is done into former subordinates point therewith and carries out paraffin removal, i.e., timber is put under the conditions of 60 DEG C -70 DEG C The former subordinates of doing of 40-60min in high temperature bucket, final timber are removed in Chinese wax respectively so that wood surface can be exposed to air In；

S5, dipping：By the way of vacuum pressed dipping, timber is positioned in vacuum pressure impregnation tank, is vacuumized, vacuum is worked as After degree reaches -0.2 to -0.1MPa, 15min is kept, the maceration extract configured is then rapidly injected, continues to keep 40min, Hereafter it is forced between 0.1-0.5MPa, keeps 50min, slowly release internal pressure, maceration extract is extracted out, take out the wood after dipping Material；

S7, corona treatment：Timber is quiet at high temperature to put 2-3h, the low temperature for then utilizing atmospheric dielectric barrier discharge to generate Plasma is handled, and the time of Low Temperature Plasma Treating timber is 16-18s, and the power supply of dielectric barrier discharge is height Frequency high voltage power supply, frequency 2kHz-2.4kHz, voltage range 3kV-3.4kV；

S8, secondary polishing：Secondary polishing is carried out to wood surface using 150-180 mesh sand paper, fine grinding depth 1mm then will be wooden Material is placed on relative air humidity 45%, temperature is 24 DEG C of environment lower 4 hours；

S9, intensive treatment：Timber is impregnated 12-13h at 46 DEG C, pulled out by the aqueous solution of urea of use quality a concentration of 1.4% Cleaned up afterwards with clear water, and 10 DEG C, relative air humidity be 40% under conditions of it is quiet put 2-3 days, so that it is naturally dried to Water content is less than 15% or less.

Embodiment 2：

S4, preservative treatment：The remainder of timber in step S3 is smeared into preservative, quaternary ammonium salt is used in inventing this embodiment Upper Lasaxing Oilfield is carried out as preservative, and in the part of timber smearing preservative, upper Lasaxing Oilfield is contour molten using polyethylene wax Point wax；

S5, processing is lured：Timber in step S3 is done into former subordinates point and carries out paraffin removal, i.e., timber is put under the conditions of 60 DEG C -70 DEG C High temperature bucket in 40-60min, the former subordinates of doing of final timber is removed in Chinese wax respectively so that wood surface can be exposed to air In, then former subordinates point coating attractant is done to timber, using brush former subordinates point coating fulvic acid, lignin are done in timber；

S6, dipping：By the way of vacuum pressed dipping, timber is positioned in vacuum pressure impregnation tank, is vacuumized, vacuum is worked as After degree reaches -0.2 to -0.1MPa, 15min is kept, the maceration extract configured is then rapidly injected, continues to keep 40min, Hereafter it is forced between 0.1-0.5MPa, keeps 50min, slowly release internal pressure, maceration extract is extracted out, take out the wood after dipping Material；

S7, cleaning：The maceration extract that wood surface is cleaned using sodium bicarbonate solution reuses clear water wood surface cleaning is dry Only；

S8, corona treatment：Timber is quiet at high temperature to put 2-3h, the low temperature for then utilizing atmospheric dielectric barrier discharge to generate Plasma is handled, and the time of Low Temperature Plasma Treating timber is 16-18s, and the power supply of dielectric barrier discharge is height Frequency high voltage power supply, frequency 2kHz-2.4kHz, voltage range 3kV-3.4kV；

S9, secondary polishing：Secondary polishing is carried out to wood surface using 150-180 mesh sand paper, fine grinding depth 1mm then will be wooden Material is placed on relative air humidity 45%, temperature is 24 DEG C of environment lower 4 hours；

S10, intensive treatment：Timber is impregnated 12-13h at 46 DEG C, pulled out by the aqueous solution of urea of use quality a concentration of 1.4% Cleaned up afterwards with clear water, and 10 DEG C, relative air humidity be 40% under conditions of it is quiet put 2-3 days, so that it is naturally dried to Water content is less than 15% or less.

Embodiment 3：

S6, dipping：By the way of vacuum pressed dipping, timber is positioned in vacuum pressure impregnation tank, is vacuumized, vacuum is worked as After degree reaches -0.2 to -0.1MPa, 15min is kept, the maceration extract configured is then rapidly injected, continues to keep 40min, Hereafter it is forced into 0.5MPa, 50min is kept, slowly releases internal pressure, maceration extract is extracted out, takes out the timber after dipping；

S7, brushing do old dose：First a concentration of 0.11% polyacrylamide solution of brushing quality, after standing 2 minutes, smearing does old dose, Make to do old dose and be fully applied to complete wetting in wood surface, it is 50~52g/m2 that wood surface, which is smeared and does old dose of amount,；

Wherein, it includes 0.8-1 parts of potassium carbonate, 0.12-0.2 parts of potassium permanganate, 0.2-0.35 parts of copper sulphate, magnesium chloride to do old dose 0.6-0.78 parts, 15-18 parts of mahogany powder solution, 100 parts of water；

And the preparation method of mahogany powder solution is will to be dried to water content less than 8% after peach peeling to be ground into mahogany powder, is made Mahogany powder presses 1 with glacial acetic acid:10 mass ratio is added to the container, and is stirred 15 minutes and is placed under ultrasonic environment at 26 DEG C Activation process, ultrasonic power 160W are carried out, the time is 10 minutes, and then addition is equivalent to the diatom of mahogany silty amount 0.1% Soil, 0.2% neopelex, with 200r/min rotating speeds stir 15 minutes after, cooled to room temperature, with aperture 11- 15 μm of filter membrane filters off impurity to obtain mahogany powder solution；

S8, cleaning：The maceration extract of wood surface is cleaned using sodium bicarbonate solution and does old dose, reuses clear water by wood surface It cleans up；

S9, corona treatment：Timber is quiet at high temperature to put 2-3h, the low temperature for then utilizing atmospheric dielectric barrier discharge to generate Plasma is handled, and the time of Low Temperature Plasma Treating timber is 16-18s, and the power supply of dielectric barrier discharge is height Frequency high voltage power supply, frequency 2kHz-2.4kHz, voltage range 3kV-3.4kV；

S10, secondary polishing：Secondary polishing is carried out to wood surface using 150-180 mesh sand paper, fine grinding depth 1mm then will be wooden Material is placed on relative air humidity 45%, temperature is 24 DEG C of environment lower 4 hours；

S11, intensive treatment：Timber is impregnated 12-13h at 46 DEG C, pulled out by the aqueous solution of urea of use quality a concentration of 1.4% Cleaned up afterwards with clear water, and 10 DEG C, relative air humidity be 40% under conditions of it is quiet put 2-3 days, so that it is naturally dried to Water content is less than 15% or less.

This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this It is all protected by Patent Law in the right of invention.

Claims

1. a kind of ancient building does old processing method with timber, which is characterized in that include the following steps：

S1, base material treatment：Wood surface is polished, clean, is dried；

2. a kind of ancient building according to claim 1 does old processing method with timber, it is characterised in that：The step S2 In, green peel of walnut is pulverized into the particulate matter that diameter is less than 5mm, and the hydrochloric acid for being equivalent to 1.5 times of own wt is added wherein The mass concentration of solution, the solution is 12%, is squeezed the juice after placing 2-3h, and impurity is filtered off to obtain core with 1-5 μm of the filter membrane in aperture Peach green peel juice.

3. a kind of ancient building according to claim 1 does old processing method with timber, it is characterised in that：The step S2 In, bamboo is fired into charcoal under conditions of 1200 DEG C, is pulverized after Temperature fall, bamboo charcoal is obtained after crossing 150-180 mesh sieve Powder.

4. a kind of ancient building according to claim 1 does old processing method with timber, it is characterised in that：The step S4 In, after preservative treatment, to timber do it is old after rest part carry out upper Lasaxing Oilfield, the upper Lasaxing Oilfield uses high-melting-point Wax.

5. a kind of ancient building according to claim 1 does old processing method with timber, it is characterised in that：The step S4 In, after paraffin removal is processed, former subordinates point coating attractant is done to timber, the attractant is fulvic acid, lignin and humus In one or more combination.

6. a kind of ancient building according to claim 1 does old processing method with timber, it is characterised in that：The step S5 In, timber is positioned in vacuum pressure impregnation tank, is vacuumized, after vacuum degree reaches -0.2 to -0.1MPa, keeps 15min, Then it is rapidly injected the maceration extract configured, continues to keep 40min, is hereafter forced into 0.1-0.5MPa, keep 50min, Internal pressure is slowly released, maceration extract is extracted out, takes out the timber after dipping.

7. a kind of ancient building according to claim 1 does old processing method with timber, it is characterised in that：The step S6 In, old dose is done to complete wetting to brush according to doing old requirement before cleaning, and described to do old dose include 0.8-1 parts of potassium carbonate, Gao Meng Sour potassium 0.12-0.2 parts, 0.2-0.35 parts of copper sulphate, 0.6-0.78 parts of magnesium chloride, 15-18 parts of mahogany powder solution, 100 parts of water.

8. a kind of ancient building according to claim 7 does old processing method with timber, it is characterised in that：The mahogany powder is molten The preparation of liquid is will to be dried to water content less than 8% after peach branch peeling to be ground into mahogany powder, make mahogany powder with glacial acetic acid by 1: 10 mass ratio is added to the container, and is stirred to be placed under ultrasonic environment for 15 minutes at 26 DEG C and is carried out activation process, ultrasound Wave power is 160W, and the time is 10 minutes, and then addition is equivalent to 0.1% diatomite of mahogany silty amount, 0.2% dodecyl Benzene sulfonic acid sodium salt, after being stirred 15 minutes with 200r/min rotating speeds, cooled to room temperature is filtered off miscellaneous with 11-15 μm of the filter membrane in aperture Matter is to obtain mahogany powder solution.

9. a kind of ancient building according to claim 1 does old processing method with timber, it is characterised in that：The step S7 In, the time of the Low Temperature Plasma Treating timber is 16-18s, and the power supply of dielectric barrier discharge is high-frequency and high-voltage power supply, frequency Rate is 2kHz-2.4kHz, voltage range 3kV-3.4kV.

10. a kind of ancient building according to claim 1 does old processing method with timber, it is characterised in that：The step S9 In, the mass concentration of the aqueous solution of urea is 1.4%, and timber is impregnated 12-13h at 46 DEG C, is cleaned and is done with clear water after pulling out Only, quiet under conditions of 10 DEG C, relative air humidity are 40% to put 2-3 days, so that it is naturally dried to water content and is less than 15% or less.