CN107415004A - A kind of processing method for preventing pine strain cracking - Google Patents
A kind of processing method for preventing pine strain cracking Download PDFInfo
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- CN107415004A CN107415004A CN201710850584.5A CN201710850584A CN107415004A CN 107415004 A CN107415004 A CN 107415004A CN 201710850584 A CN201710850584 A CN 201710850584A CN 107415004 A CN107415004 A CN 107415004A
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- pine
- flitch
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- strain cracking
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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
- B27K3/16—Inorganic impregnating agents
-
- 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
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- 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
-
- 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
- B27K5/001—Heating
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention mainly relates to woodwork processing technique field, discloses a kind of processing method for preventing pine strain cracking, including：Cutting, once freezing, it is secondary freezing, stably, dry；Method is simple, easy to operation, hence it is evident that strengthens the strength and stability of pine, prevents pine strain cracking, improve the use value of pine, income is improved 14.8%；Cut after pine section is removed the peel, be easy to post-processing uniform, improve treatment effeciency；Flitch is dipped in sodium selenite solution after cutting, sodium selenite solution is promoted to penetrate into flitch, lignin and hemicellulose are improved in pine to the binding ability of cellulose, suppress pine deformation, first freeze fast solution after immersion slowly, freeze slow solution soon again after spraying sodium selenite solution, sodium selenite is set fully to be combined with pine, pine hardness is improved, reduces the wettability power of pine, improves pine stability.
Description
Technical field
The invention mainly relates to woodwork processing technique field, more particularly to a kind of processing side for preventing pine strain cracking
Method.
Background technology
Pine, be one of common timber in China, there is rosin taste, pale yellow, clean mark, can antibacterial and mouldproof,
But pine is wooden softer, cracking is easily deformed, therefore maintain complex, hence it is evident that shorten pine product uses the longevity
Life, this use range for also resulting in pine are very restricted.
The content of the invention
The defects of in order to make up prior art, it is an object of the invention to provide a kind of processing side for preventing pine strain cracking
Method.
A kind of processing method for preventing pine strain cracking, comprises the following steps：
（1）Cutting：Pine section is removed the peel, cut according to required size, is easy to post-processing uniform, improves processing effect
Rate, obtain flitch；
（2）Once freeze：Flitch is placed in sodium selenite solution, soaked 8 ~ 10 hours in 40 ~ 45 DEG C, is taken out, in -32 ~ -30
DEG C freezing 6 ~ 7 hours, then at 53 ~ 55 DEG C heating thaw 3 ~ 4 hours, promote sodium selenite solution penetrate into flitch, obtain and once freeze
Flitch；
（3）Secondary freezing：Step is uniformly sprayed to once freezing flitch（2）In sodium selenite solution, fountain height be 120 ~
140ml/m2, it is stored at room temperature 4 ~ 5 hours, is freezed 7 ~ 8 hours in -43 ~ -41 DEG C, sodium selenite is fully combined with pine, improves
Pine hardness, the wettability power of pine is reduced, improve pine stability, naturally to thaw, obtain secondary freezing flitch；
（4）It is stable：Secondary freezing flitch is placed in stabilizing solution, is soaked in vacuum 30 ~ 36 hours, promotes stabilizing solution to penetrate into flitch,
Strengthen the binding ability of lignin and hemicellulose to cellulose, improve the strength and stability of pine, suppress pine water suction and become
Tide, strain cracking is prevented, flitch must be stablized；
（5）Dry：It is 58 ~ 60% that flitch, which will be stablized, to be placed in 81 ~ 83 DEG C to be dried to water content, then reduces temperature to 62 ~ 66 DEG C, is dried
It is 7 ~ 9% to do to water content, keeps pine intensity, avoids the strain cracking caused by quick dehydration, and that improves pine uses valency
Value, obtains anti-deformation pine.
The step（2）Sodium selenite solution, weight concentration be 0.2 ~ 0.4%.
The step（4）Stabilizing solution, be made up of the raw material of following parts by weight：Chitosan 2.7 ~ 2.9, plant extracts
1.6 ~ 1.8, nano titanium oxide 1.2 ~ 1.4, white carbon 0.4 ~ 0.6, acetum 600 ~ 700, all raw materials are mixed, stirring
To being well mixed, stabilizing solution is obtained.
Described plant extracts, it is made up of the raw material of following parts by weight：Pine needle 17 ~ 19, granatum 17 ~ 19, tealeaves 12 ~
14th, withy 11 ~ 13, dandelion 11 ~ 13, Chinese prickly ash 7 ~ 9, all raw materials are crushed, and add raw material weight 30 ~ 40 times of amounts, volume integrals
Number is in 2.4 ~ 2.6% acetum, it is original 1/2 that heating, which is boiled to volume, filtering, filter residue weight is added into filter residue
60 ~ 70 times of amounts, the alcoholic solution that volume fraction is 47 ~ 49%, ultrasonic extraction 30 ~ 40 minutes, filtering, filter residue are added into filter residue
The water of 40 ~ 50 times of amounts of weight, it is original 1/10 that heating, which is decocted to volume, filtering, merges all filtrates, being dried to water content is
8 ~ 10%, obtain plant extracts.
Described acetum, volume fraction are 1.2 ~ 1.4%.
The step（4）Vacuum, vacuum is -32 ~ -36MPa.
The anti-deformation pine that the processing method for preventing pine strain cracking is prepared.
It is an advantage of the invention that：The processing method provided by the invention for preventing pine strain cracking, method is simple, is easy to grasp
Make, hence it is evident that strengthen the strength and stability of pine, prevent pine strain cracking, improve the use value of pine, make income
Improve 14.8%；Cut after pine section is removed the peel, be easy to post-processing uniform, improve treatment effeciency；Flitch is soaked after cutting
In sodium selenite solution, promote sodium selenite solution to penetrate into flitch, improve in pine lignin and hemicellulose to cellulose
Binding ability, suppress pine deformation, it is first slow after immersion to freeze fast solution, spray it is fast again after sodium selenite solution freeze slow solution, make sub- selenium
Sour sodium is fully combined with pine, improves pine hardness, reduces the wettability power of pine, improves pine stability；After secondary freezing
Flitch is placed in stabilizing solution and is soaked in vacuum, promotes stabilizing solution to penetrate into flitch, stabilizing solution is to add shell in acetum to gather
Sugar, plant extracts, nano titanium oxide and white carbon, strengthen lignin and hemicellulose to the binding ability of cellulose, carry
The strength and stability of high pine, suppress pine water suction become tide, prevent strain cracking, the plant extracts contained can anti-mildew prevent
Moth, it is safe and healthy without any toxic chemical；Pine is dried stage by stage after stable processing, keeps pine intensity,
The strain cracking caused by quick dehydration is avoided, improves the use value of pine.
Embodiment
Illustrate the present invention with specific embodiment below.
Embodiment 1
A kind of processing method for preventing pine strain cracking, comprises the following steps：
（1）Cutting：Pine section is removed the peel, cut according to required size, is easy to post-processing uniform, improves processing effect
Rate, obtain flitch；
（2）Once freeze：Flitch is placed in sodium selenite solution, weight concentration 0.2%, soaked 8 hours in 40 DEG C, taken out,
Freezed 6 hours in -32 DEG C, thawed 3 hours then at 53 DEG C of heating, promote sodium selenite solution to penetrate into flitch, obtain once freezing wood
Side；
（3）Secondary freezing：Step is uniformly sprayed to once freezing flitch（2）In sodium selenite solution, fountain height 120ml/
m2, it is stored at room temperature 4 hours, is freezed 7 hours in -43 DEG C, sodium selenite is fully combined with pine, improve pine hardness, reduces
The wettability power of pine, pine stability is improved, naturally to thaw, obtains secondary freezing flitch；
（4）It is stable：Secondary freezing flitch is placed in stabilizing solution, is soaked in vacuum 30 hours, vacuum is -32MPa, is promoted stable
Liquid penetrates into flitch, strengthens the binding ability of lignin and hemicellulose to cellulose, improves the strength and stability of pine, suppresses
Pine water suction becomes tide, prevents strain cracking, must stablize flitch；
（5）Dry：It is 58 ~ 60% that flitch, which will be stablized, to be placed in 81 DEG C to be dried to water content, then reduces temperature to 62 DEG C, is dried to and contains
Water is 7 ~ 9%, keeps pine intensity, avoids the strain cracking caused by quick dehydration, improve the use value of pine, obtain anti-
Deform pine.
The step（4）Stabilizing solution, be made up of the raw material of following parts by weight：Chitosan 2.7, plant extracts 1.6, receive
Rice titanium dioxide 1.2, white carbon 0.4, acetum 600, all raw materials are mixed, and are stirred to being well mixed, are obtained stabilizing solution.
Described plant extracts, it is made up of the raw material of following parts by weight：Pine needle 17, granatum 17, tealeaves 12, withy
11st, dandelion 11, Chinese prickly ash 7, all raw materials are crushed, and add 30 times of amounts of raw material weight, the acetum that volume fraction is 2.4%
In, it is original 1/2 that heating, which is boiled to volume, filtering, 60 times of amounts of filter residue weight is added into filter residue, volume fraction is 47%
Alcoholic solution, ultrasonic extraction 30 minutes, filtering, the water of 40 times of amounts of filter residue weight is added into filter residue, heating, which is decocted to volume, is
Originally 1/10, filtering, merge all filtrates, it is 8 ~ 10% to be dried to water content, obtains plant extracts.
Described acetum, volume fraction 1.2%.
The anti-deformation pine that the processing method for preventing pine strain cracking is prepared.
Embodiment 2
A kind of processing method for preventing pine strain cracking, comprises the following steps：
（1）Cutting：Pine section is removed the peel, cut according to required size, is easy to post-processing uniform, improves processing effect
Rate, obtain flitch；
（2）Once freeze：Flitch is placed in sodium selenite solution, weight concentration 0.3%, soaked 9 hours in 43 DEG C, taken out,
Freezed 6 hours in -31 DEG C, thawed 3.5 hours then at 54 DEG C of heating, promote sodium selenite solution to penetrate into flitch, obtain and once freeze
Flitch；
（3）Secondary freezing：Step is uniformly sprayed to once freezing flitch（2）In sodium selenite solution, fountain height 130ml/
m2, it is stored at room temperature 4.5 hours, is freezed 7.5 hours in -42 DEG C, sodium selenite is fully combined with pine, improves pine hardness,
The wettability power of pine is reduced, pine stability is improved, naturally to thaw, obtains secondary freezing flitch；
（4）It is stable：Secondary freezing flitch is placed in stabilizing solution, is soaked in vacuum 33 hours, vacuum is -34MPa, is promoted stable
Liquid penetrates into flitch, strengthens the binding ability of lignin and hemicellulose to cellulose, improves the strength and stability of pine, suppresses
Pine water suction becomes tide, prevents strain cracking, must stablize flitch；
（5）Dry：It is 58 ~ 60% that flitch, which will be stablized, to be placed in 82 DEG C to be dried to water content, then reduces temperature to 64 DEG C, is dried to and contains
Water is 7 ~ 9%, keeps pine intensity, avoids the strain cracking caused by quick dehydration, improve the use value of pine, obtain anti-
Deform pine.
The step（4）Stabilizing solution, be made up of the raw material of following parts by weight：Chitosan 2.8, plant extracts 1.7, receive
Rice titanium dioxide 1.3, white carbon 0.5, acetum 650, all raw materials are mixed, and are stirred to being well mixed, are obtained stabilizing solution.
Described plant extracts, it is made up of the raw material of following parts by weight：Pine needle 18, granatum 18, tealeaves 13, withy
12nd, dandelion 12, Chinese prickly ash 8, all raw materials are crushed, and add 35 times of amounts of raw material weight, the acetum that volume fraction is 2.5%
In, it is original 1/2 that heating, which is boiled to volume, filtering, 65 times of amounts of filter residue weight is added into filter residue, volume fraction is 48%
Alcoholic solution, ultrasonic extraction 35 minutes, filtering, the water of 45 times of amounts of filter residue weight is added into filter residue, heating, which is decocted to volume, is
Originally 1/10, filtering, merge all filtrates, it is 8 ~ 10% to be dried to water content, obtains plant extracts.
Described acetum, volume fraction 1.3%.
The anti-deformation pine that the processing method for preventing pine strain cracking is prepared.
Embodiment 3
A kind of processing method for preventing pine strain cracking, comprises the following steps：
（1）Cutting：Pine section is removed the peel, cut according to required size, is easy to post-processing uniform, improves processing effect
Rate, obtain flitch；
（2）Once freeze：Flitch is placed in sodium selenite solution, weight concentration 0.4%, soaks 10 hours, take in 45 DEG C
Go out, freezed 7 hours in -30 DEG C, thawed 4 hours then at 55 DEG C of heating, promote sodium selenite solution to penetrate into flitch, obtain and once freeze
Flitch；
（3）Secondary freezing：Step is uniformly sprayed to once freezing flitch（2）In sodium selenite solution, fountain height 140ml/
m2, it is stored at room temperature 5 hours, is freezed 8 hours in -41 DEG C, sodium selenite is fully combined with pine, improve pine hardness, reduces
The wettability power of pine, pine stability is improved, naturally to thaw, obtains secondary freezing flitch；
（4）It is stable：Secondary freezing flitch is placed in stabilizing solution, is soaked in vacuum 36 hours, vacuum is -36MPa, is promoted stable
Liquid penetrates into flitch, strengthens the binding ability of lignin and hemicellulose to cellulose, improves the strength and stability of pine, suppresses
Pine water suction becomes tide, prevents strain cracking, must stablize flitch；
（5）Dry：It is 58 ~ 60% that flitch, which will be stablized, to be placed in 83 DEG C to be dried to water content, then reduces temperature to 66 DEG C, is dried to and contains
Water is 7 ~ 9%, keeps pine intensity, avoids the strain cracking caused by quick dehydration, improve the use value of pine, obtain anti-
Deform pine.
The step（4）Stabilizing solution, be made up of the raw material of following parts by weight：Chitosan 2.9, plant extracts 1.8, receive
Rice titanium dioxide 1.4, white carbon 0.6, acetum 700, all raw materials are mixed, and are stirred to being well mixed, are obtained stabilizing solution.
Described plant extracts, it is made up of the raw material of following parts by weight：Pine needle 19, granatum 19, tealeaves 14, withy
13rd, dandelion 13, Chinese prickly ash 9, all raw materials are crushed, and add 40 times of amounts of raw material weight, the acetum that volume fraction is 2.6%
In, it is original 1/2 that heating, which is boiled to volume, filtering, 70 times of amounts of filter residue weight is added into filter residue, volume fraction is 49%
Alcoholic solution, ultrasonic extraction 40 minutes, filtering, the water of 50 times of amounts of filter residue weight is added into filter residue, heating, which is decocted to volume, is
Originally 1/10, filtering, merge all filtrates, it is 8 ~ 10% to be dried to water content, obtains plant extracts.
Described acetum, volume fraction 1.4%.
The anti-deformation pine that the processing method for preventing pine strain cracking is prepared.
Comparative example 1
Step（2）In sodium selenite solution be changed to water, remaining method, with embodiment 1.
Comparative example 2
Removal step（2）In once freezing, remaining method, with embodiment 1.
Comparative example 3
Removal step（3）, remaining method, with embodiment 1.
Comparative example 4
Removal step（4）In stabilizing solution in chitosan, remaining method, with embodiment 1.
Comparative example 5
Removal step（4）In stabilizing solution in plant extracts, remaining method, with embodiment 1.
Comparative example 6
Removal step（4）In stabilizing solution in nano titanium oxide, remaining method, with embodiment 1.
Comparative example 7
Removal step（4）In stabilizing solution in white carbon, remaining method, with embodiment 1.
Comparative example 8
Removal step（4）In vacuum, remaining method, with embodiment 1.
Comparative example 9
Step（5）In water content is directly dried in 130 DEG C as 7 ~ 9%, remaining method, with embodiment 1.
The treatment effect of embodiment and comparative example pine processing method：
By pine section cut into length be 50cm, width 4cm, be highly 2cm flitch 39, be randomly divided into 13 groups, every group 3
Bar, respectively embodiment group, comparative example group and control group, each group are handled according to the processing method of the group respectively, are made final
Water content is 8%, and for control group without processing, direct Exposure to Sunlight to water content is 8%, detects modulus of elasticity, the rift grain of each group flitch
Compression strength and bending strength, results averaged, and mould is inoculated with to the flitch after each group processing, according to " carrying silver-colored chitosan
Preparation and its research to veneer antimicrobial treatment, the anti-microbial property of Huang Siqi " method detection each group flitch, embodiment and right
The treatment effect of ratio pine processing method is shown in Table 1.
Table 1：The treatment effect of embodiment and comparative example pine processing method
Show from the result of table 1, embodiment prevents anti-deformation pine that the processing method of pine strain cracking obtains, springform
Amount, parallel-to-grain compressive strength and bending strength are significantly greater than comparative example and control group, and intensity significantly improves, and antibiotic rate is substantially more right
Ratio and control group are high, can effective Antimicrobial preservative, increase the service life, illustrate provided by the invention to prevent pine strain cracking
Processing method there is good treatment effect.
Claims (7)
1. a kind of processing method for preventing pine strain cracking, it is characterised in that comprise the following steps：
（1）Cutting：Pine section is removed the peel, is cut according to required size, obtains flitch；
（2）Once freeze：Flitch is placed in sodium selenite solution, soaked 8 ~ 10 hours in 40 ~ 45 DEG C, is taken out, in -32 ~ -30
DEG C freezing 6 ~ 7 hours, then at 53 ~ 55 DEG C heating thaw 3 ~ 4 hours, obtain and once freeze flitch；
（3）Secondary freezing：Step is uniformly sprayed to once freezing flitch（2）In sodium selenite solution, fountain height be 120 ~
140ml/m2, it is stored at room temperature 4 ~ 5 hours, is freezed 7 ~ 8 hours in -43 ~ -41 DEG C, naturally to thaw, obtain secondary freezing flitch；
（4）It is stable：Secondary freezing flitch is placed in stabilizing solution, is soaked in vacuum 30 ~ 36 hours, flitch must be stablized；
（5）Dry：It is 58 ~ 60% that flitch, which will be stablized, to be placed in 81 ~ 83 DEG C to be dried to water content, then reduces temperature to 62 ~ 66 DEG C, is dried
It is 7 ~ 9% to do to water content, obtains anti-deformation pine.
2. the processing method of pine strain cracking is prevented according to claim 1, it is characterised in that the step（2）Asia
Selenic acid sodium solution, weight concentration are 0.2 ~ 0.4%.
3. the processing method of pine strain cracking is prevented according to claim 1, it is characterised in that the step（4）It is steady
Determine liquid, be made up of the raw material of following parts by weight：Chitosan 2.7 ~ 2.9, plant extracts 1.6 ~ 1.8, nano titanium oxide 1.2 ~
1.4th, white carbon 0.4 ~ 0.6, acetum 600 ~ 700, all raw materials are mixed, and are stirred to being well mixed, are obtained stabilizing solution.
4. the processing method of pine strain cracking is prevented according to claim 3, it is characterised in that described plant extract
Thing, it is made up of the raw material of following parts by weight：Pine needle 17 ~ 19, granatum 17 ~ 19, tealeaves 12 ~ 14, withy 11 ~ 13, dandelion 11 ~
13rd, Chinese prickly ash 7 ~ 9, all raw materials are crushed, adds 30 ~ 40 times of amounts of raw material weight, the acetum that volume fraction is 2.4 ~ 2.6%
In, it is original 1/2 that heating, which is boiled to volume, filtering, 60 ~ 70 times of amounts of filter residue weight are added into filter residue, volume fraction be 47 ~
49% alcoholic solution, ultrasonic extraction 30 ~ 40 minutes, filtering, the water of 40 ~ 50 times of amounts of filter residue weight is added into filter residue, heats and decocts
It is original 1/10 to boil to volume, filtering, merges all filtrates, it is 8 ~ 10% to be dried to water content, obtains plant extracts.
5. the processing method of pine strain cracking is prevented according to claim 3, it is characterised in that described acetum,
Volume fraction is 1.2 ~ 1.4%.
6. the processing method of pine strain cracking is prevented according to claim 1, it is characterised in that the step（4）It is true
Sky, vacuum are -32 ~ -36MPa.
A kind of 7. anti-deformation pine for preventing the processing method of pine strain cracking to be prepared described in any one of claim 1 ~ 6
Wood.
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Application publication date: 20171201 |