CN106182256A - The method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure - Google Patents
The method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure Download PDFInfo
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- CN106182256A CN106182256A CN201610596946.8A CN201610596946A CN106182256A CN 106182256 A CN106182256 A CN 106182256A CN 201610596946 A CN201610596946 A CN 201610596946A CN 106182256 A CN106182256 A CN 106182256A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, 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
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, 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
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/0207—Pretreatment of wood before impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, 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
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, 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
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/06—Softening or hardening of 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 belongs to wood processing treatment technical field, relate to a kind of method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure, including 11 steps: be respectively pretreatment, PH measure with classify, collect, process pond set up, pond under timber, build airtight pond, transformation immersion treatment, clean timber, gather blend together, dried and sofening treatment and regulation moisture content.Compared with prior art, the beneficial effects of the present invention is: treating of wood amount is big, low to equipment requirements degree, production efficiency is high, superior product quality.
Description
Technical field
The invention belongs to wood processing treatment technical field, relate to a kind of based on pulsed increase and decrease air pressure shortening modifying cotton wood
The method in cycle.
Background technology
China is typical Shaolin country, and whole nation afforestation rate is 20.36%.In recent years annual imported timber 100,000,000 cubes
Rice is above (every Year's consumption is about 25 billion cubic meters).Along with the enforcement of country's wildwood protected project, artificial forest provides
Source becomes the target of concern.Whole nation artificial forest protected area is 62,000,000 hm at present3, ranking first in the world, its timber is in building, family
The fields such as tool are with a wide range of applications.
Poplar Plantation has yield high, and growth is fast, the advantages such as cutting cycle is short, but its density of wood is low, material is soft, color
Shallow, moisture content is high and skewness, be easily generated the manufacturing deficiencies such as dry-shrinkage deformed and Veneer Cutting fluffing and mechanical strength be poor, surface
Hardness is low, wearability is low, limits it and uses, and compared with wildwood timber, its material and dicoration differ greatly.The most right
It is the most necessary that poplar carries out chemical modification.
In the middle of prior art, poplar is carried out the most modified main employing vacuum technology, but this process is deposited
Shortcoming be that treating capacity is the least, high to equipment requirements degree, simultaneously because single decompression maintains and pressurization maintains so that timber
Internal structure conversion is single, causes soak time long, poor effect.And for example Publication No. " 103203786A ", patent name is
" a kind of modifying cotton wood technique ", the technique which describing a kind of extensive process poplar, but its distinct disadvantage is that the process time is non-
The longest.
Therefore, it is necessary to provide the technical scheme improved, to overcome technical problem present in prior art.
Summary of the invention
It is an object of the invention to, it is provided that the process of a kind of modifying cotton wood, have technique simple, treating capacity is big, place
The advantage that the reason time is short.
In order to achieve the above object, the invention provides and a kind of shorten modifying cotton wood cycle based on pulsed increase and decrease air pressure
Method, comprises the following steps:
The first step, pretreatment: poplar is carried out peeling, segmentation pretreatment, the former bulk of multiple poplars after being split；
Second step, PH measures and classification: bulk former to each poplar carries out pH value mensuration, and by the pH value poplar more than 7
Former bulk is classified as the alkalescence former bulk of poplar, and the pH value former bulk of poplar less than 7 is classified as the acid former bulk of poplar；
3rd step, collects: collects alkalescence poplar former bulk composition alkalescence poplar group, collects acid poplar former bulk composition acid
Property poplar group；
4th step, processes pond and sets up: including setting up basic treatment pond and acidic treatment pond, described basic treatment pond is by salt
Acid solution is uniformly added in the warm water of 42～48 DEG C and forms, described acidic treatment pond for sodium hydroxide solution is uniformly added into 42～
The warm water of 48 DEG C forms；
5th step, pond under timber: according to alkalescence poplar group's correspondence basic treatment pond and the acid corresponding acidic treatment of poplar group
The corresponded manner in pond, after being arranged arrangement, lower pond carries out immersion treatment；
6th step, builds airtight pond: include respectively basic treatment pond and acidic treatment pond being carried out black box installation, shape
Becoming alkaline airtight pond and the airtight pond of acidity, described black box includes support and covers the plain cotton fabric above support, described support
Being set up in above process pond in the way of entirety covering, described plain cotton fabric edge processes with processing pond outer fringe seal compression；
7th step, transformation immersion treatment: carry out air pressure increase and decrease to inside alkaline airtight pond and the airtight pond of acidity so that it is internal
Air pressure is checker between malleation and negative pressure, and handling duration is 24 hours, conversion frequency be 10～30 minutes once,
The span of high pressure is 0.2～0.5MPa, and the span of minimal pressure is 0.01～0.05MPa；
8th step, cleans timber: by the way of being progressively passed through clear water, discharging medicinal liquid, clean alkalescence poplar group and acidity
Poplar group；Water body replace speed be 10 volumes per hour；
9th step, set blendes together: alkaline poplar group and acid poplar group after cleaning pull and be mixed to form total poplar out
Group；
Tenth step, dried and sofening treatment: total poplar group is dried process, simultaneously in dried process
Carry out sofening treatment；
11st step, regulates moisture content: the total poplar group after completing dried carries out moisture content regulation so that it is aqueous
Rate controls 6%～8%.
Common cotton wood Acidity of Aikalinity is indefinite, and diverse location acid or the degree of alkalinity in same timber also differs
Causing, therefore process the design concept of specially wood based on special pond, basic treatment pond and acidic treatment pond process the poplar in alkalescence respectively
Timber and the cotton wood in acidity, utilize the method for classification ensemble to process respectively, is favorably improved work efficiency and product matter
Amount.
Owing to the extensive rate of pressurization processed required by timber is the highest, therefore select to build simple gas-tight ring efficiently
Border.This method for designing is possible not only to reduce cost, also ensures that equipment handling flexibly, it is achieved produce flexibly simultaneously.
The checker of positive/negative-pressure environment, can effectively facilitate immersion and the acid-base neutralization of timber.Generally wood internal is fine
Dimension structure complexity is interlocked, and utilizes quick air pressure to convert disturbance wood internal space, makes wood internal structure present dynamic deformation
Pattern, the wood internal structure deformation that twice malleation of i.e. every minor tick or negative pressure are caused is the most different.
Timber is cleared up by the mode using clear water progressively to replace pond inner liquid medicine, and advantage is, water body is in stream all the time
Dynamic state, can effectively eliminate residual liquor.
One preferably scheme, the wherein said alkalescence former bulk of poplar includes a class former bulk of alkalescence poplar and two classes alkalescence
The former bulk of poplar, the pH value of a described class former bulk of alkalescence poplar is less than or equal to 8 more than 7, former piece of described two class alkalescence poplar
The pH value of material is more than 8；The wherein said acid former bulk of poplar includes a class former bulk of acidity poplar and former piece of two class acidity poplars
Material, the pH value of a described class former bulk of acidity poplar is more than or equal to 6 less than 7, the pH value of the described two class former bulks of acidity poplar
Less than 6.It is further preferable that the 3rd step, collect: collect a class former bulk of alkalescence poplar and form a class alkalescence poplar group, collect two
The former bulk of class alkalescence poplar forms a class alkalescence poplar group, collects a class former bulk of acidity poplar and forms a class acidity poplar group,
Collect the two class former bulks of acidity poplar and form a class acidity poplar group；4th step, processes pond and sets up: set up respectively at a class alkalescence
Li Chi, two class basic treatment ponds, a class acidic treatment pond and two class acidic treatment ponds, a wherein said class basic treatment pond and two
Class basic treatment pond is to be uniformly added into the hydrochloric acid solution of various dose in the warm water of 42～48 DEG C to form, at a described class acidity
Li Chi and two class acidic treatment ponds are to be uniformly added into the sodium hydroxide solution of various dose in the warm water of 42～48 DEG C to form；The
Five steps, pond under timber: according to the corresponding class basic treatment pond of a class alkalescence poplar group, the corresponding two class alkalescence of two class alkalescence poplar groups
Process pond, the corresponding class acidic treatment pond of a class acidity poplar group right with the two corresponding two class acidic treatment ponds of class acidity poplar group
Answering mode, after being arranged arrangement, lower pond carries out immersion treatment.Timber is further segmented, so that process essence
Exactness is higher, more can improve the quality of timber after process.
One preferably scheme, the 7th step, in transformation immersion treatment, malleation is identical with the persistent period of negative pressure.
One preferably scheme, the 7th step, transformation immersion treatment: maximal pressure and minimal pressure be respectively 0.2MPa and
0.05MPa.Being so designed that, it is possible to reduce the requirement degree to equipment, gained wood quality product are preferable simultaneously.
One preferably scheme, the 8th step, to clean in timber, described clear water temperature is 5～25 DEG C.Being so designed that can be straight
Connect and use the tap water of room temperature to use as clear water, reduce Productive statistics cost.
One preferably scheme, the tenth step, dried and sofening treatment: specifically, kiln put into by timber, increase in kiln
Temperature, to 20 DEG C, keeps one day, then increases by 10 DEG C every day, and when arriving 80 DEG C, temperature no longer changes, co-dried 15 days；Its
In when temperature arrive 40 DEG C time, the humidity discharging pore opening kiln crown portion carries out humidity discharging, treats that humidity discharging is complete, close humidity discharging pore；Work as temperature
When degree arrives 50 DEG C, spraying in kiln by humidity discharging pore by timber softening agent, make timber softening agent disperse in kiln, timber softens
The addition of agent is that every cubic metre of timber adds 0.5 kilogram of timber softening agent；Treat after Gan Zaoing that timber cools down removal kiln completely
In.It is so designed that the wood quality obtained is higher.
Compared with prior art, the beneficial effects of the present invention is:
Treating of wood amount is big, low to equipment requirements degree, and production efficiency is high, superior product quality.
Accompanying drawing explanation
Fig. 1 is the structural representation in airtight pond in the present invention.
Wherein: 1, airtight pond；2, medicinal liquid；3, poplar group；4, support；5, plain cotton fabric；6, seal point is compressed；7, pump.
Detailed description of the invention
Embodiment 1
With reference to Fig. 1, this embodiment describes a kind of method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure, bag
Include following steps:
The first step, pretreatment: the poplars of 100 cubic metres are carried out successively peeling, segmentation pretreatment, many after being split
The former bulk of individual poplar；
Second step, PH measures with classification: bulk former to each poplar carries out pH value mensuration, it is thus achieved that alkalescence poplar former bulk body
Amassing is 42.5 cubic metres, and average pH value is respectively 7.8；Obtaining acid poplar former bulk volume is 57.5, and average pH value is respectively
6.1。
3rd step, collects: collects alkalescence poplar former bulk composition alkalescence poplar group, collects acid poplar former bulk composition acid
Property poplar group；
4th step, processes pond and sets up: include setting up basic treatment pond and acidic treatment pond, and basic treatment pond is specially to storage
The water yield 62 tons, temperature be the clear water of 45 DEG C puts into 14 kilograms, mass fraction be 25% hydrochloric acid solution form；Acidic treatment pond
For be 62 tons to reservoir storage, temperature be that the sodium hydroxide putting in the clear water of 45 DEG C and being equivalent to 3.5 kilograms of sodium hydrate solids is molten
Liquid forms；
5th step, pond under timber: by different types of poplar group 3 after arrangement arranges, enter basic treatment under correspondence
In the middle of the medicinal liquid 2 in pond and acidic treatment pond；
6th step, builds airtight pond 1: include alkaline airtight pond and the airtight pond of acidity, is above process pond to set up and props up
Frame 4, support 4 covers plain cotton fabric 5, and the edge of plain cotton fabric 5 seals with processing to go out to carry out to compress because of compression seal point 6 outside pond, a pump 7
Connected with inner space, airtight pond 1 by pipeline.
7th step, transformation immersion treatment: carry out air pressure increase and decrease to inside alkaline airtight pond and the airtight pond of acidity so that it is internal
Air pressure is checker between malleation and negative pressure, and handling duration is 24 hours, conversion frequency be 20 minutes once, wherein maximal pressure
It is respectively 0.5MPa and 0.01MPa with minimal pressure；
8th step, cleans timber: by the way of being progressively passed through clear water, discharging medicinal liquid 2, clean alkalescence poplar group and acidity
Poplar group；Water body replace speed be 10 volumes per hour；Clear water temperature is 15.5 DEG C.
9th step, set blendes together: alkaline poplar group and acid poplar group after cleaning pull and be mixed to form total poplar out
Group；
Tenth step, dried and sofening treatment: total poplar group puts into kiln, increase kiln temperature, to 20 DEG C, keeps
One day, then increasing by 10 DEG C every day, when arriving 80 DEG C, temperature no longer changes, co-dried 15 days；Wherein arrive 40 DEG C when temperature
Time, the humidity discharging pore opening kiln crown portion carries out humidity discharging, treats that humidity discharging is complete, closes humidity discharging pore；When temperature arrives 50 DEG C, pass through
Timber softening agent is sprayed in kiln by humidity discharging pore, makes timber softening agent disperse in kiln, and the addition of timber softening agent is 50 public affairs
Jin timber softening agent；Treat after Gan Zaoing that timber cools down in removal kiln completely；
11st step, regulates moisture content: the total poplar group after completing dried carries out moisture content regulation so that it is aqueous
Rate controls 7%.
Embodiment 2
The method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure of the present embodiment, comprises the following steps:
The first step, pretreatment: the poplars of 80 cubic metres are carried out successively peeling, segmentation pretreatment, many after being split
The former bulk of individual poplar；
Second step, PH measures with classification: bulk former to each poplar carries out pH value mensuration, it is thus achieved that former piece of a class alkalescence poplar
Material volume is 21 cubic metres, and average pH value respectively 7.4 2 class alkalescence poplar former bulk volume is 18 cubic metres, and average pH value divides
It is not 9.2；Obtaining a class acidity poplar former bulk volume is 22 cubic metres, and average pH value is respectively 6.1, and two class acidity poplars are former
Bulk volume is 19 cubic metres, and average pH value is respectively 5.5.
3rd step, collects: collect a class former bulk of alkalescence poplar and form a class alkalescence poplar group, collect two class alkalescence poplars
Former bulk forms a class alkalescence poplar group, collects a class former bulk of acidity poplar and forms a class acidity poplar group, collects two class acid
The property former bulk of poplar forms a class acidity poplar group；
4th step, processes pond and sets up: include setting up a class basic treatment pond, two class basic treatment ponds, a class acidic treatment
Pond and two class acidic treatment ponds.It is to put into 6.5 in the clear water of 48 DEG C that one class basic treatment pond is specially to reservoir storage 62 tons, temperature
Kilogram, mass fraction be 25% hydrochloric acid solution form；Two class basic treatment ponds be specially to reservoir storage 62 tons, temperature be 48 DEG C
Clear water in put into 12 kilograms, mass fraction be 25% hydrochloric acid solution form；One class acidic treatment pond for reservoir storage be 62
Ton, temperature are that the sodium hydroxide solution putting in the clear water of 48 DEG C and being equivalent to 1.7 kilograms of sodium hydrate solids forms；Two classes are acid
Process pond be to reservoir storage be 62 tons, temperature be the clear water of 48 DEG C in put into and be equivalent to the hydroxide of 4 kilograms of sodium hydrate solids
Sodium solution forms；
5th step, pond under timber: by different types of poplar group 3 after arrangement arranges, enter each process pond under correspondence
In the middle of medicinal liquid 2；
6th step, builds airtight pond 1: set up support 4 processing above pond, support 4 covers plain cotton fabric 5, the edge of plain cotton fabric 5
Sealing with processing to go out to carry out to compress because of compression seal point 6 outside pond, a pump 7 is connected with inner space, airtight pond 1 by pipeline.
7th step, transformation immersion treatment: carry out air pressure increase and decrease to each airtight pond 1 is internal so that it is air pressure inside in malleation and
Checker between negative pressure, handling duration is 24 hours, conversion frequency be 20 minutes once, wherein maximal pressure and minimal pressure are respectively
For 0.2MPa and 0.05MPa；
8th step, cleans timber: by the way of being progressively passed through clear water, discharging medicinal liquid 2, clean poplar group 3；Water body is replaced
Speed be 10 volumes per hour；Clear water temperature is 25 DEG C.
9th step, set blendes together: pull and be mixed to form poplar group 3 each after cleaning out total poplar group；
Tenth step, dried and sofening treatment: total poplar group puts into kiln, increase kiln temperature, to 20 DEG C, keeps
One day, then increasing by 10 DEG C every day, when arriving 80 DEG C, temperature no longer changes, co-dried 15 days；Wherein arrive 40 DEG C when temperature
Time, the humidity discharging pore opening kiln crown portion carries out humidity discharging, treats that humidity discharging is complete, closes humidity discharging pore；When temperature arrives 50 DEG C, pass through
Timber softening agent is sprayed in kiln by humidity discharging pore, makes timber softening agent disperse in kiln, and the addition of timber softening agent is 40 public affairs
Jin timber softening agent；Treat after Gan Zaoing that timber cools down in removal kiln completely；
11st step, regulates moisture content: the total poplar group after completing dried carries out moisture content regulation so that it is aqueous
Rate controls 8%.
Embodiment 3
The method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure of the present embodiment, comprises the following steps:
The first step, pretreatment: the poplars of 80 cubic metres are carried out successively peeling, segmentation pretreatment, many after being split
The former bulk of individual poplar；
Second step, PH measures with classification: bulk former to each poplar carries out pH value mensuration, it is thus achieved that former piece of a class alkalescence poplar
Material volume is 18.5 cubic metres, and average pH value respectively 7.3 2 class alkalescence poplar former bulk volume is 17.5 cubic metres, average PH
Value is respectively 9.5；Obtaining a class acidity poplar former bulk volume is 20 cubic metres, and average pH value is respectively 6.5, two class acidity poplars
The former bulk volume of wood is 24 cubic metres, and average pH value is respectively 5.2.
3rd step, collects: collect a class former bulk of alkalescence poplar and form a class alkalescence poplar group, collect two class alkalescence poplars
Former bulk forms a class alkalescence poplar group, collects a class former bulk of acidity poplar and forms a class acidity poplar group, collects two class acid
The property former bulk of poplar forms a class acidity poplar group；
4th step, processes pond and sets up: include setting up a class basic treatment pond, two class basic treatment ponds, a class acidic treatment
Pond and two class acidic treatment ponds.It is to put into 4.8 in the clear water of 42 DEG C that one class basic treatment pond is specially to reservoir storage 62 tons, temperature
Kilogram, mass fraction be 25% hydrochloric acid solution form；Two class basic treatment ponds be specially to reservoir storage 62 tons, temperature be 42 DEG C
Clear water in put into 9.9 kilograms, mass fraction be 25% hydrochloric acid solution form；One class acidic treatment pond for reservoir storage be 62
Ton, temperature are that the sodium hydroxide solution putting in the clear water of 42 DEG C and being equivalent to 1.5 kilograms of sodium hydrate solids forms；Two classes are acid
Process pond be to reservoir storage be 62 tons, temperature be the clear water of 42 DEG C in put into and be equivalent to the hydrogen-oxygen of 5.5 kilograms of sodium hydrate solids
Change sodium solution to form；
5th step, pond under timber: by different types of poplar group 3 after arrangement arranges, enter each process pond under correspondence
In the middle of medicinal liquid 2；
6th step, builds airtight pond 1: set up support 4 processing above pond, support 4 covers plain cotton fabric 5, the edge of plain cotton fabric 5
Sealing with processing to go out to carry out to compress because of compression seal point 6 outside pond, a pump 7 is connected with inner space, airtight pond 1 by pipeline.
7th step, transformation immersion treatment: carry out air pressure increase and decrease to each airtight pond 1 is internal so that it is air pressure inside in malleation and
Checker between negative pressure, handling duration is 24 hours, conversion frequency be 30 minutes once, wherein maximal pressure and minimal pressure are respectively
For 0.3MPa and 0.03MPa；
8th step, cleans timber: by the way of being progressively passed through clear water, discharging medicinal liquid 2, clean poplar group 3；Water body is replaced
Speed be 10 volumes per hour；Clear water temperature is 5 DEG C.
9th step, set blendes together: pull and be mixed to form poplar group 3 each after cleaning out total poplar group；
Tenth step, dried and sofening treatment: total poplar group puts into kiln, increase kiln temperature, to 20 DEG C, keeps
One day, then increasing by 10 DEG C every day, when arriving 80 DEG C, temperature no longer changes, co-dried 15 days；Wherein arrive 40 DEG C when temperature
Time, the humidity discharging pore opening kiln crown portion carries out humidity discharging, treats that humidity discharging is complete, closes humidity discharging pore；When temperature arrives 50 DEG C, pass through
Timber softening agent is sprayed in kiln by humidity discharging pore, makes timber softening agent disperse in kiln, and the addition of timber softening agent is 40 public affairs
Jin timber softening agent；Treat after Gan Zaoing that timber cools down in removal kiln completely；
11st step, regulates moisture content: the total poplar group after completing dried carries out moisture content regulation so that it is aqueous
Rate controls 6%.
Claims (7)
1. the method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure, it is characterised in that comprise the following steps:
The first step, pretreatment: poplar is carried out peeling, segmentation pretreatment, the former bulk of multiple poplars after being split；
Second step, PH measures and classification: bulk former to each poplar carries out pH value mensuration, and by the pH value former piece of the poplar more than 7
Material is classified as the alkalescence former bulk of poplar, and the pH value former bulk of poplar less than 7 is classified as the acid former bulk of poplar；
3rd step, collects: collects alkalescence poplar former bulk composition alkalescence poplar group, collects the acid acid poplar of poplar former bulk composition
Wood group；
4th step, processes pond and sets up: including setting up basic treatment pond and acidic treatment pond, described basic treatment pond is that hydrochloric acid is molten
Liquid is uniformly added in the warm water of 42～48 DEG C and forms, and described acidic treatment pond is for be uniformly added into 42～48 DEG C by sodium hydroxide solution
Warm water in form；
5th step, pond under timber: according to alkalescence poplar group's correspondence basic treatment pond and acid poplar group corresponding acidic treatment pond
Corresponded manner, after being arranged arrangement, lower pond carries out immersion treatment；
6th step, builds airtight pond: include carrying out basic treatment pond and acidic treatment pond respectively black box installation, forms alkali
Property airtight pond and the airtight pond of acidity, described black box includes support and covers the plain cotton fabric above support, and described support is with whole
The mode that body covers is set up in above process pond, and described plain cotton fabric edge processes with processing pond outer fringe seal compression；
7th step, transformation immersion treatment: carry out air pressure increase and decrease to inside alkaline airtight pond and the airtight pond of acidity so that it is air pressure inside
Checker between malleation and negative pressure, handling duration is 24 hours, conversion frequency be 10～30 minutes once, wherein maximal pressure
Span 2～5MPa, the span of minimal pressure is 0.03～0.05MPa；
8th step, cleans timber: by the way of being progressively passed through clear water, discharging medicinal liquid, cleans alkalescence poplar group and acid poplar
Group；Water body replace speed be 10 volumes per hour；
9th step, set blendes together: alkaline poplar group and acid poplar group after cleaning pull and be mixed to form total poplar group out；
Tenth step, dried and sofening treatment: total poplar group is dried process, carried out in dried process simultaneously
Sofening treatment；
11st step, regulates moisture content: the total poplar group after completing dried carries out moisture content regulation so that it is moisture content control
System is 6%～8%.
The method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure the most according to claim 1, it is characterised in that
The wherein said alkalescence former bulk of poplar includes a class former bulk of alkalescence poplar and the two class former bulks of alkalescence poplar, a described class alkalescence
The pH value of the former bulk of poplar is more than 7 less than or equal to 8, and the pH value of the described two class former bulks of alkalescence poplar is more than 8；Wherein said acid
The property former bulk of poplar includes a class former bulk of acidity poplar and the two class former bulks of acidity poplar, a described class former bulk of acidity poplar
PH value less than 7 more than or equal to 6, the pH value of the described two class former bulks of acidity poplar is less than 6.
The method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure the most according to claim 2, it is characterised in that
3rd step, collects: collect a class former bulk of alkalescence poplar and form a class alkalescence poplar group, collect former piece of two class alkalescence poplar
Material forms a class alkalescence poplar group, collects a class former bulk of acidity poplar and forms a class acidity poplar group, collects two class acidity poplars
The former bulk of wood forms a class acidity poplar group；
4th step, process pond set up: set up respectively a class basic treatment pond, two class basic treatment ponds, a class acidic treatment pond and
Two class acidic treatment ponds, a wherein said class basic treatment pond and two class basic treatment ponds are by equal for the hydrochloric acid solution of various dose
Forming in the warm water of even addition 42～48 DEG C, a described class acidic treatment pond and two class acidic treatment ponds are by the hydrogen of various dose
Sodium hydroxide solution is uniformly added in the warm water of 42～48 DEG C and forms；
5th step, pond under timber: according to a class alkalescence poplar group corresponding a class basic treatment pond, two class alkalescence poplar group's correspondences two
Class basic treatment pond, the corresponding class acidic treatment pond of a class acidity poplar group and the two corresponding two class acidic treatment of class acidity poplar group
The corresponded manner in pond, after being arranged arrangement, lower pond carries out immersion treatment.
The method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure the most according to claim 1, it is characterised in that
7th step, in transformation immersion treatment, malleation is identical with the persistent period of negative pressure.
The method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure the most according to claim 1, it is characterised in that
7th step, transformation immersion treatment: maximal pressure and minimal pressure are respectively 0.2MPa and 0.05MPa.
The method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure the most according to claim 1, it is characterised in that
8th step, cleans in timber, and described clear water temperature is 5～25 DEG C.
The method shortening the modifying cotton wood cycle based on pulsed increase and decrease air pressure the most according to claim 1, it is characterised in that
Tenth step, dried and sofening treatment: specifically, kiln put into by timber, increase kiln temperature, to 20 DEG C, keeps one day, and
Rear every day increases by 10 DEG C, and when arriving 80 DEG C, temperature no longer changes, co-dried 15 days；Wherein when temperature arrives 40 DEG C, open
The humidity discharging pore in kiln crown portion carries out humidity discharging, treats that humidity discharging is complete, closes humidity discharging pore；When temperature arrives 50 DEG C, by humidity discharging gas
Timber softening agent is sprayed in kiln by hole, makes timber softening agent disperse in kiln, and the addition of timber softening agent is every cubic metre of wood
Material adds 0.5 kilogram of timber softening agent；Treat after Gan Zaoing that timber cools down in removal kiln completely.
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| JPH06210606A (en) * | 1993-01-19 | 1994-08-02 | Makinon:Kk | Method and device for treating liquid impregnating process in wooden material and porous inorganic material and anti destructing method for radial parenchyma wall and aspirated pit-pair of wooden material |
| CN101125433A (en) * | 2006-08-18 | 2008-02-20 | 魏象 | Wood dyeing method using pressure-increasing and pressure-decreasing technology |
| CN102348947A (en) * | 2009-02-27 | 2012-02-08 | 双子贸易开放式股份公司 | Method for drying wood and an apparatus for the implementation thereof |
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Application publication date: 20161207 |