CN108274570B - Wooden slice preparation method - Google Patents
Wooden slice preparation method Download PDFInfo
- Publication number
- CN108274570B CN108274570B CN201711498255.5A CN201711498255A CN108274570B CN 108274570 B CN108274570 B CN 108274570B CN 201711498255 A CN201711498255 A CN 201711498255A CN 108274570 B CN108274570 B CN 108274570B
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- Prior art keywords
- vent board
- wooden slice
- wooden
- slice
- hole
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
- B27C5/00—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor
-
- 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
- B27K3/16—Inorganic impregnating agents
- B27K3/32—Mixtures of different inorganic impregnating agents
Abstract
A kind of Wooden slice preparation method, comprising: by raw material timber water-weakening effect；Timber after water-weakening effect is prepared as Wooden slice；Wooden slice is flattened, is then placed between two glass slides, a period of time is stood；One container is provided, and modulates the humidity environment in the container；And Wooden slice is held in a clamp assemblies, then clamp assemblies are placed in the moisture content adjustment that Wooden slice is carried out in the container；Wherein, the clamp assemblies include vent board and connecting element, the vent board includes upper vent board and lower vent board, the upper vent board and lower vent board are respectively provided at least one through-hole, Wooden slice is placed between the upper vent board and lower vent board, and the connecting element is for fixing and connecting the upper vent board and lower vent board.
Description
Technical field
The embodiment of the present invention is related to Wooden slice field, and in particular to a kind of Wooden slice system stretched for micro mechanics
Preparation Method.
Background technique
Moisture content affects the almost all of physico-mechanical properties of timber, therefore, carries out the micro mechanics tension test of timber,
It can be using the Wooden slice (thickness is not more than 200 μm) of different water cut as research object.A kind of preparation step of Wooden slice
It is as follows: (1) by wooden unit water-weakening effect；(2) Wooden slice is produced using sliding microtome, Wooden slice at this time is typically in full
Water state；(3) Wooden slice is placed in progress moisture content adjustment in certain humidity environment, carries out subsequent micro mechanics stretching
Test.
The Wooden slice of water-saturated state is adjusted to a certain equilibrium moisture content, the moisture to be undergone that is bound to scatters and disappears from timber
Process, when the moisture in wood cell wall start scatter and disappear when, it will occur the Wooden slice as caused by difference dry shrinkage curling
The problems such as deformation, is unfavorable for subsequent micro mechanics tension test (easily snapping off when applying tensile load).Currently, in order to avoid full
Texturized common practices occurs in the drying process for the Wooden slice of water state: the Wooden slice of water-saturated state is placed
Between two glass slides, then puts in an atmosphere or be dried in climatic chamber.The drawbacks of this method is: timber is cut
The contact area of piece and ambient air is small, and drying efficiency is low, and the test period is long.
Summary of the invention
In view of the above shortcomings of the prior art, the embodiment provides a kind of preparation methods of Wooden slice, should
Method improved by increasing the contact area of Wooden slice and ambient air the adjustment timeliness of Wooden slice moisture content with
Accuracy.
The embodiment of the present invention provides a kind of Wooden slice preparation method, comprising:
By raw material timber water-weakening effect；
Timber after water-weakening effect is prepared as Wooden slice；
Wooden slice is flattened, is then placed between two glass slides, a period of time is stood；
One container is provided, and modulates the humidity environment in the container；And
Wooden slice is held in a clamp assemblies, then clamp assemblies are placed in the container and carry out timber
The moisture content of slice adjusts；
Wherein, the clamp assemblies include vent board and connecting element, and the vent board includes upper vent board and lower ventilation
Plate, the upper vent board and lower vent board are respectively provided at least one through-hole, and Wooden slice is placed in the upper vent board under
Between vent board, the connecting element is for fixing and connecting the upper vent board and lower vent board.
Further, the through-hole can be uniformly distributed on upper vent board and lower vent board, when Wooden slice is placed in
When between upper vent board and lower vent board, the through-hole is evenly distributed on the upper and lower of Wooden slice along Wooden slice length direction
Two sides.
Further, the through-hole can be round tube hole, and the round tube hole diameter is the 1/2~3/5 of Wooden slice width.
Further, the round tube hole can be interspersed two sides above and below Wooden slice.
Further, at room temperature, the humidity in the container can be modulated using saturated salt solution method or sulphate method
Environment.
In the saturated salt solution method, phosphorus pentoxide (P can use2O5), magnesium chloride (MgCl2), sodium bromide
(NaBr), sodium chloride (NaCl), potassium chloride (KCl) or potassium nitrate (KNO3) be modulated, adjustable relative humidity of producing is respectively
0%, 33%, 58%, 76%, 86% or 93% environment.
In the sulphate method, can use concentration be 57.8%, 48.0%, 36.5% or 24.1% the concentrated sulfuric acid into
Row modulation, adjustable relative humidity of producing is 20%, 40%, 60% or 80% environment respectively.
According to an exemplary embodiment, the softening time of raw material timber water-weakening effect is 8-12 days, two after softening
The time stood between a glass slide is 20-30h.
According to an exemplary embodiment, obtained Wooden slice length is 15-30mm, width 3-10mm, thickness
It is 50-200 μm.
According to an exemplary embodiment, the vent board is made of aluminum foil plate or plastic sheet.
Wooden slice preparation simple, convenient for operating, can be used for micro mechanics tension test that the present invention provides a kind of structures
Method.Wooden slice obtained one of has at least the following advantages: (1) being adjustable to any equilibrium moisture content；(2) moisture content tune
Complete cycle is short；(3) straightened condition is kept through moisture content Wooden slice adjusted.
Detailed description of the invention
By the description made for the present invention of below with reference to attached drawing, other objects and advantages of the present invention will be aobvious and easy
See, and can help that complete understanding of the invention will be obtained.It should be noted that attached drawing is not necessarily to scale to draw, but only
It is shown with not influencing the illustrative way of reader's understanding.
Fig. 1 is the schematic top plan view according to the Wooden slice in the clamp assemblies of one embodiment of the present of invention.
Fig. 2 is placed in glass desicator for the Wooden slice in the clamp assemblies in Fig. 1 and carries out showing for moisture content adjustment
It is intended to.
In figure: 1, Wooden slice；2, lower layer's vent board；3, lower layer's round tube hole；4, upper layer vent board；5, upper layer round tube hole；
6, paper clip；7, volume drying component.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the attached drawing of the embodiment of the present invention,
Technical solution of the present invention is clearly and completely described.Obviously, described embodiment is an implementation of the invention
Example, instead of all the embodiments.Based on described the embodiment of the present invention, those of ordinary skill in the art are without creating
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
According to one embodiment of present invention, preparation is as follows for the Wooden slice detailed step of micro mechanics tension test:
Firstly, the softening time is about 8-12 days by the raw material wooden unit water-weakening effect of certain size, for example, 10 days.
Then, Wooden slice is prepared for example, by using sliding microtome.Various sizes of timber can be prepared according to test demand
Slice.For example, Wooden slice length is 15~30mm, width is 3~10mm, with a thickness of 50~200 μm.
The Wooden slice prepared through the above steps is needed at this time careful in full water, rolled state under normal circumstances
Ground flattens Wooden slice, is then placed between two glass slides, and is put in about one day in air time, such as
20-30h can get straight, complete Wooden slice at this time.Subsequent moisture content adjustment is carried out again.
The moisture content adjustment of Wooden slice needs to carry out in certain humidity environment.For this purpose, providing a container, and modulate
Humidity environment in the container.The moisture content adjustment of Wooden slice can be carried out in the container of such as glass desicator.For example,
At room temperature, the humidity environment in saturated salt solution method or sulphate method modulation glass desicator can be used.
Specifically, using saturated salt solution method, using such as phosphorus pentoxide (P2O5), magnesium chloride (MgCl2), bromination
Sodium (NaBr), sodium chloride (NaCl), potassium chloride (KCl) or potassium nitrate (KNO3) modulate respectively relative humidity be 0%, 33%,
58%, 76%, 86% or 93% environment.
Specifically, using sulphate method, using such as concentration be 57.8%, 48.0%, 36.5% or 24.1% it is dense
Sulfuric acid modulates the environment that relative humidity is 20%, 40%, 60% or 80% respectively.
Testing crew can place different classes of saturated salt solution or not in drier bottom according to different test demands
With the sulfuric acid of concentration, the environment of different relative humidity is obtained, to carry out moisture content adjustment to Wooden slice.
Then, referring to Figures 1 and 2, Wooden slice is placed in a clamp assemblies, is then placed in clamp assemblies
Moisture content adjustment is carried out in glass desicator with predetermined moisture environment.Purpose is to improve Wooden slice in drier
While moisture absorption or desorption rate, prevent it from the problems such as Texturized occur.Used Wooden slice clamp assemblies have knot
The characteristics of structure is simple, convenient for operation.
Elaborate below for the design feature and application method of the component: the component is by vent board and paper clip group
At.Vent board can for example be made of aluminum foil plate or plastic sheet, be divided into upper and lower two layers.To increase Wooden slice and surrounding air
The upper and lower layer of contact area, vent board is equipped with equally distributed through-hole, such as round tube hole, diameter are about Wooden slice width
1/2~3/5.Round tube hole is evenly distributed on the upper and lower two sides of Wooden slice along the length direction of the Wooden slice as sample,
Also, the round tube hole of the upper and lower two sides of Wooden slice is in distributional pattern interlaced with each other, adjacent round tube hole be spaced about 1~
2mm.After Wooden slice is placed between the upper and lower layer of vent board, the upper and lower layer of vent board is fixed and connected with paper clip,
It is tightly bonded together Wooden slice more with upper and lower layer vent board.
When test, the Wooden slice quantity that the size of vent board, the number of round tube hole and each vent board can clamp is equal
It can be reasonably adjusted according to the size and test of Wooden slice.
When Wooden slice is when mass change interior for 24 hours is less than 0.1%, it is believed that the sample reaches balancing water content.It can
Carry out subsequent micro mechanics tension test.
In a specific embodiment, referring to Fig.1,3 Wooden slices 1 are placed in upper layer vent board 4 and lower layer ventilates
Between version 2, version 4 of ventilating at the middle and upper levels includes 3*3 evenly arranged totally 9 upper layer round tube holes 5, and lower layer's ventilation version 2 includes 3*2
A evenly arranged totally 6 lower layer's round tube holes 3；Upper layer ventilation version 4 and lower layer's ventilation version 2 are by being located at the song of 4 corners not
Needle 6 is fixed, is tightly bonded together Wooden slice 1 more with upper and lower layer vent board；Simultaneously round tube hole is cut in timber
The upper and lower two sides distribution interlaced with each other of piece 1, that is, as shown in Figure 1, the circle of round tube hole 5 and downside on the upside of each Wooden slice is logical
The distribution interlaced with each other of hole 3.By the above method, so that Wooden slice guarantees warp in the case where the moisture content adjustment period is shorter
Moisture content Wooden slice adjusted keeps straightened condition.
Simply, convenient for operating, can be used for micro mechanics examination is stretched as described above, the embodiment provides a kind of structures
The preparation method for the Wooden slice tested.Wooden slice obtained one of has at least the following advantages: (1) being adjustable to any balance
Moisture content；(2) the moisture content adjustment period is short；(3) straightened condition is kept through moisture content Wooden slice adjusted.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto.For example, with
Illustrate the connecting element for connecting and fixing full communication between the higher and lower levels plate, still, this field in upper example embodiment by taking paper clip as an example
It should be understood to the one skilled in the art that connecting element is not limited to paper clip, other connecting elements for being suitable for fixing and connecting full communication between the higher and lower levels plate are equal
It can be used for the present invention.In addition, illustrating by taking saturated salt solution method or sulphate method as an example in above example embodiment dry to glass
The modulator approach of humidity environment in dry device, however, it will be understood by those skilled in the art that other embodiments of the invention can also adopt
With other methods for adjusting humidity environment, the present invention not specific restriction to this.Therefore, protection scope of the present invention should be wanted with right
Ask and its protection scope of equivalent subject to.
Claims (6)
1. a kind of Wooden slice preparation method characterized by comprising
By raw material timber water-weakening effect；
Timber after water-weakening effect is prepared as Wooden slice；
Wooden slice is flattened, is then placed between two glass slides, a period of time is stood；
One container is provided, and modulates the humidity environment in the container；And
Wooden slice is held in a clamp assemblies, then clamp assemblies are placed in the container and carry out Wooden slice
Moisture content adjustment；
Wherein, the softening time of the raw material timber water-weakening effect is 8-12 days, after softening between described two glass slides
The time of standing is 20-30h；
Wherein, the humidity environment in the container is at room temperature, to be modulated using saturated salt solution method or sulphate method；Its
In, the clamp assemblies include vent board and connecting element, and the vent board includes upper vent board and lower vent board, described logical
Gas plate and lower vent board are respectively provided at least one through-hole, and Wooden slice is placed between the upper vent board and lower vent board,
The connecting element is for fixing and connecting the upper vent board and lower vent board；
The through-hole is uniformly distributed on upper vent board and lower vent board, when Wooden slice is placed in upper vent board and lower vent board
Between when, the through-hole is evenly distributed on the upper and lower two sides of Wooden slice along Wooden slice length direction；Also, the through-hole
It is interspersed in the two sides up and down of Wooden slice, the spacing of adjacent through-holes is 1~2mm.
2. the round tube hole diameter is wood the method according to claim 1, wherein the through-hole is round tube hole
The 1/2~3/5 of material slice width.
3. the method according to claim 1, wherein utilizing phosphorus pentoxide in the saturated salt solution method
(P2O5), magnesium chloride (MgCl2), sodium bromide (NaBr), sodium chloride (NaCl), potassium chloride (KCI) or potassium nitrate (KNO3) adjusted
System modulates the environment that relative humidity is 0%, 33%, 58%, 76%, 86% or 93% respectively.
4. the method according to claim 1, wherein in the sulphate method, using concentration be 57.8%,
48.0%, 36.5% or 24.1% concentrated sulfuric acid is modulated, modulate respectively relative humidity be 20%, 40%, 60% or
80% environment.
5. width is the method according to claim 1, wherein obtained Wooden slice length is 15-30mm
3-10mm, with a thickness of 50-200 μm.
6. the method according to claim 1, wherein the vent board is made of aluminum foil plate or plastic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711498255.5A CN108274570B (en) | 2017-12-29 | 2017-12-29 | Wooden slice preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711498255.5A CN108274570B (en) | 2017-12-29 | 2017-12-29 | Wooden slice preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108274570A CN108274570A (en) | 2018-07-13 |
| CN108274570B true CN108274570B (en) | 2019-09-24 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI89748C (en) * | 1992-08-24 | 1993-11-10 | Risto Veikko Kalervo Hakala | Device and method for determining chip size and sheet content |
| KR20010029415A (en) * | 1999-09-07 | 2001-04-06 | 김춘섭 | Wooden strip with an anticrack end and mat made from it |
| CN101204909B (en) * | 2007-12-20 | 2010-11-24 | 广西大学 | Producing method of wood of bamboo wood microscopic structure printing pattern |
| CN103308380B (en) * | 2013-06-07 | 2015-05-13 | 夏兆鹏 | Softening effect test method for wood microcosmic section softening reagent by test instrument |
| CN103994906A (en) * | 2014-04-30 | 2014-08-20 | 河南科技大学 | Making method of wood cross section year-by-year growth ring microscopic slices |
| CN106619935B (en) * | 2016-12-27 | 2020-01-24 | 中国农业科学院农产品加工研究所 | Preparation method of dried orange peel |
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