CN108748535A - A kind of processing method of charing-Chinese herbal medicine-nano-particles reinforcement preserving timber - Google Patents
A kind of processing method of charing-Chinese herbal medicine-nano-particles reinforcement preserving timber Download PDFInfo
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- CN108748535A CN108748535A CN201810621904.4A CN201810621904A CN108748535A CN 108748535 A CN108748535 A CN 108748535A CN 201810621904 A CN201810621904 A CN 201810621904A CN 108748535 A CN108748535 A CN 108748535A
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Classifications
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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
- B27K3/52—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
- B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C
-
- 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
- B27K2240/00—Purpose of the treatment
- B27K2240/20—Removing fungi, molds or insects
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a kind of processing method of charing-Chinese herbal medicine-nano-particles reinforcement preserving timber, the wood sample after drying is put into neatly packed in vacuum high-temperature treatment box, weight in pressure vacuumizes, and heat temperature raising charing process obtains charing antisepsis timber；Chinese herbal medicine Aqueous extracts are mixed with nano titanic oxide sol, is added in hydrothermal reaction kettle, dipping modification is carried out to charing antisepsis timber, then drying to constant weight；Gained wood sample is immersed in nano composite preservative solution, vacuum impregnation is handled in vacuum tank, is drawn off after wood sample saturation is sunk, and the blotting paper crossed with sterilization absorbs its surface supernatant liquid, dry to constant weight.Anti-corrosion is carried out to wood sample using the method that vacuum carbonized is handled, wood structure is intact after vacuum carbonized processing, can greatly improve the corrosion resistant performance of timber, reach Ι grades strong corrosion resistant grade.Nano composite preservative has the inhibition zone of bigger, and fungistatic effect is more preferable, has good leach resistance.
Description
Technical field
The invention belongs to wood processing fields, and in particular to a kind of charing-Chinese herbal medicine-nano-particles reinforcement preserving timber
Processing method.
Background technology
Timber has a porosity as a kind of natural high molecular material, nanoscale or micron-sized cell wall gap, thin
Cell and pit etc. are all that the mobile diffusion of fluid and moisture provides the foundation, and colloidal sol is in capillary tension, concentration gradient and interior
It can enter inside wood cell and in space between cells under the effects that external pressure force difference.Wood cell wall main component is fiber
Element, hemicellulose, lignin, wherein containing a large amount of hydroxyl, the main component of cellulose is P-D- glucose, it each
It is the architecture basics that polycondensation occurs and combines there are three activity hydroxy that a unit, which contains,.Timber is soaked by inorganic nano-particle
Stain processing, the hydroxyl of particle surface are either combined with chemical bond or pass through physics with the activity hydroxy in wood cell wall
Absorption is deposited in the gap between unsetting area's microfibril and microfibril, improves the hardness and consistency of wood cell wall,
So as to improve the physical property of timber, such as mechanical property, wear-resisting property, dimensional stability are improved, or improves the suppression of timber
Each performance such as bacterium property, anti-flammability.
Invention content
The purpose of the present invention is for existing problem, provide a kind of charing-Chinese herbal medicine-nano-particles reinforcement anticorrosive wood
The processing method of material, the timber according to this method processing have good antiseptic property and leach resistance.
The present invention is achieved by the following technical solutions：
A kind of processing method of charing-Chinese herbal medicine-nano-particles reinforcement preserving timber, which is characterized in that include the following steps：
（1）Vacuum carbonized processing method：
Wood sample after drying is put into neatly packed in vacuum high-temperature treatment box, weight in pressure, chamber door is closed and vacuumizes, add
Heat is warming up to 95-105 DEG C, after keeping 30-35min, then is warming up to 200-220 DEG C of charing process 3-5h, stops heating, waits for vacuum
When the temperature inside the box is cooled to 55-65 DEG C, charing antisepsis timber is taken out；
（2）Hydro-thermal method prepares nano-titanium dioxide-Chinese herbal medicine composite anti-corrosive timber：
20-30 parts of Chinese herbal medicine Aqueous extracts are mixed with 15-25 parts of nano titanic oxide sols, is added in hydrothermal reaction kettle, is soaking
It is right under conditions of stain temperature is 88-92 DEG C（1）Middle gained charing antisepsis timber is modified processing 3-4h, then at 40-45 DEG C
It dries to constant weight in air dry oven；
（3）Preservative vacuum impregnation wood sample treatment process：
It will（2）Middle gained wood sample immerses in nano composite preservative solution, and vacuum impregnation handles 30- in vacuum tank
35min is drawn off after wood sample saturation is sunk, and the blotting paper crossed with sterilization absorbs its surface supernatant liquid, is put into
It is dried to constant weight in 40-45 DEG C of drying box.
Further, step（1）It is middle to immerse wood sample in distilled water, it is cleaned by ultrasonic 20-30min removal of impurities, then exists
It dries to constant weight in 80-85 DEG C of air dry oven.
Further, step（2）Middle water extraction prepares Chinese herbal medicine Aqueous extracts：
Solid-liquid ratio 1 is pressed into Chinese herbal medicine:Distilled water is added in 8-10, starts to boil after impregnating 30-35min, until by liquor strength
Concentration is filtered after being 0.6-0.8g/mL；
The Chinese herbal medicine is the mixed of any one or a few in pericarpium zanthoxyli, frutus cnidii, kuh-seng, the coptis, fructus forsythiae, the tuber of stemona, the fruit of summer cypress
It closes；
The pH value of the nano titanic oxide sol is 1-2.
Further, step（3）The wet grinding technique of middle nano cupric oxide and nano zine oxide compound preservative：
2-3 parts of nano cupric oxides and 2-3 parts of nano zine oxides are added into 200-300 parts of deionized waters, add 2-2.5 parts of tables
Face activating agent ammonium citrate, is put into grinder and is ground, and setting grinder rotating speed is 4000-5000rpm, is in pH value
2-3h is ground under conditions of 9.5-10.5, places into progress ultrasonic disperse 30-35min in supersonic generator, it is multiple that nanometer is made
Close antiseptic solution.
The present invention has the following advantages compared with prior art：
（1）Anti-corrosion is carried out to wood sample using the method that vacuum carbonized is handled, wood structure is intact after vacuum carbonized processing, rotten
Rotten degree is smaller, can greatly improve the corrosion resistant performance of timber, reaches Ι grades strong corrosion resistant grade；The wood sample of vacuum carbonized processing
Equilibrium moisture content, water absorption rate and cubical expansivity all significantly reduce, the reduction of equilibrium moisture content and water absorption rate is conducive to prevent
The dry and cracked deformation of timber reduces moisture necessary to wood-decaying fungus life, and the raising of hygroscopicity and bulking performance can substantially improve
The dimensional stability of timber.
（2）Both Chinese herbal medicine is combined with the nano-titanium dioxide with spectrum antimicrobial properties by sol-gal process, make
Antibacterial characteristics carry out complementary, while using hydro-thermal method timber is carried out composite modified, improves rotproofness and the anti-current mistake of timber
Property, nano-titania particle enters wood cell chamber with Chinese herbal medicine, and the conduit of timber is that main infiltration is logical with pit
Road；Nano-titanium dioxide can not only enter wood internal, associate with wood components in such a way that physical absorption forms hydrogen bond,
It can also be by forming Coordinative Chemistry key with the phenolic hydroxyl group in the carboxyl or lignin in cellulose and hemicellulose, to solid
It in wood components.
（3）Using surfactant ammonium citrate as dispersant, nano cupric oxide and nano oxygen are prepared for by wet grinding
Change zinc composite anti-corrosive agent solution, addition ammonium citrate is that the copper oxide of dispersant and zinc oxide composite powder pass through wet grinding
Afterwards, nanometer particle size is smaller and more uniform and stable；Nano composite preservative has the inhibition zone of bigger, and fungistatic effect is more preferable, tool
There is good leach resistance.
The processed preserving timber of the present invention can be used for the production of household items, and corrosion resistance and leach resistance are strong, can
Extend the service life of household items.
Specific implementation mode
Embodiment 1
A kind of processing method of charing-Chinese herbal medicine-nano-particles reinforcement preserving timber, which is characterized in that include the following steps：
（1）Vacuum carbonized processing method：
Wood sample after drying is put into neatly packed in vacuum high-temperature treatment box, weight in pressure, chamber door is closed and vacuumizes, add
Heat is warming up to 95-105 DEG C, after keeping 30min, then is warming up to 200-220 DEG C of charing process 3h, stops heating, waits in vacuum tank
When temperature is cooled to 55-65 DEG C, charing antisepsis timber is taken out；
（2）Hydro-thermal method prepares nano-titanium dioxide-Chinese herbal medicine composite anti-corrosive timber：
20 parts of Chinese herbal medicine Aqueous extracts are mixed with 15 parts of nano titanic oxide sols, are added in hydrothermal reaction kettle, in dipping temperature
It is right under conditions of 88-92 DEG C（1）Middle gained charing antisepsis timber is modified processing 3h, then in 40-45 DEG C of forced air drying
It dries to constant weight in case；
（3）Preservative vacuum impregnation wood sample treatment process：
It will（2）Middle gained wood sample immerses in nano composite preservative solution, and vacuum impregnation handles 30min in vacuum tank,
It is drawn off after wood sample saturation is sunk, the blotting paper crossed with sterilization absorbs its surface supernatant liquid, is put into 40-45 DEG C
It is dried to constant weight in drying box.
Further, step（1）It is middle to immerse wood sample in distilled water, it is cleaned by ultrasonic 20min removal of impurities, then in 80-
It dries to constant weight in 85 DEG C of air dry ovens.
Further, step（2）Middle water extraction prepares Chinese herbal medicine Aqueous extracts：
Solid-liquid ratio 1 is pressed into Chinese herbal medicine:8 are added distilled water, start to boil after impregnating 30min, until being by liquor strength concentration
It is filtered after 0.6g/mL；
The Chinese herbal medicine is the mixed of any one or a few in pericarpium zanthoxyli, frutus cnidii, kuh-seng, the coptis, fructus forsythiae, the tuber of stemona, the fruit of summer cypress
It closes；
The pH value of the nano titanic oxide sol is 1.
Further, step（3）The wet grinding technique of middle nano cupric oxide and nano zine oxide compound preservative：
2 parts of nano cupric oxides and 2 parts of nano zine oxides are added into 200 parts of deionized waters, add 2 parts of surfactant lemons
Sour ammonium, is put into grinder and is ground, and setting grinder rotating speed is 4000rpm, and 2h is ground under conditions of pH value is 9.5,
Progress ultrasonic disperse 30min in supersonic generator is placed into, nano composite preservative solution is made.
Embodiment 2
A kind of processing method of charing-Chinese herbal medicine-nano-particles reinforcement preserving timber, which is characterized in that include the following steps：
（1）Vacuum carbonized processing method：
Wood sample after drying is put into neatly packed in vacuum high-temperature treatment box, weight in pressure, chamber door is closed and vacuumizes, add
Heat is warming up to 95-105 DEG C, after keeping 35min, then is warming up to 200-220 DEG C of charing process 5h, stops heating, waits in vacuum tank
When temperature is cooled to 55-65 DEG C, charing antisepsis timber is taken out；
（2）Hydro-thermal method prepares nano-titanium dioxide-Chinese herbal medicine composite anti-corrosive timber：
30 parts of Chinese herbal medicine Aqueous extracts are mixed with 25 parts of nano titanic oxide sols, are added in hydrothermal reaction kettle, in dipping temperature
It is right under conditions of 88-92 DEG C（1）Middle gained charing antisepsis timber is modified processing 4h, then in 40-45 DEG C of forced air drying
It dries to constant weight in case；
（3）Preservative vacuum impregnation wood sample treatment process：
It will（2）Middle gained wood sample immerses in nano composite preservative solution, and vacuum impregnation handles 35min in vacuum tank,
It is drawn off after wood sample saturation is sunk, the blotting paper crossed with sterilization absorbs its surface supernatant liquid, is put into 40-45 DEG C
It is dried to constant weight in drying box.
Further, step（1）It is middle to immerse wood sample in distilled water, it is cleaned by ultrasonic 30min removal of impurities, then in 80-
It dries to constant weight in 85 DEG C of air dry ovens.
Further, step（2）Middle water extraction prepares Chinese herbal medicine Aqueous extracts：
Solid-liquid ratio 1 is pressed into Chinese herbal medicine:10 are added distilled water, start to boil after impregnating 35min, until being by liquor strength concentration
It is filtered after 0.8g/mL；
The Chinese herbal medicine is the mixed of any one or a few in pericarpium zanthoxyli, frutus cnidii, kuh-seng, the coptis, fructus forsythiae, the tuber of stemona, the fruit of summer cypress
It closes；
The pH value of the nano titanic oxide sol is 2.
Further, step（3）The wet grinding technique of middle nano cupric oxide and nano zine oxide compound preservative：
3 parts of nano cupric oxides and 3 parts of nano zine oxides are added into 300 parts of deionized waters, add 2.5 parts of surfactant lemons
Lemon acid ammonium, is put into grinder and is ground, and setting grinder rotating speed is 5000rpm, is ground under conditions of pH value is 10.5
3h places into progress ultrasonic disperse 35min in supersonic generator, nano composite preservative solution is made.
Comparative example 1
This comparative example 1 compared with Example 1, in step（1）In not to wood sample carry out vacuum carbonized preservative treatment, remove
In addition method and step all same.
Comparative example 2
This comparative example 2 compared with Example 2, in step（2）In unused nano-titanium dioxide-Chinese herbal medicine hydro-thermal method prepare it is multiple
Close preserving timber, method and step all same in addition to this.
Control group
Application No. is：A kind of processing work improving wood preservation performance using Chinese cassia tree 01 derivatives disclosed in 2017108492633
Skill.
In order to compare the preservation of timber against decay performance produced by the present invention, to above-described embodiment 1, embodiment 2, comparative example 1,
The wood sample of 2 method of comparative example processing and the wood sample of control group, are tested according to professional standard, are tested
It is carried out at 40 DEG C by the method in standard, strain is Corilus versicolor Quel., aspergillus niger, and test specimen is evaluated by corruption by mass loss rate
Lose bacterium infringement degree, another batch placed naturally under identical environment 60 days after carry out identical test, as a result record it is as follows：
Table 1
Vacuum carbonized preservative treatment is not carried out to wood sample in comparative example 1,2 it can be seen from upper table 1, it is unused to receive
Rice titanium dioxide-Chinese herbal medicine hydro-thermal method prepares composite anti-corrosive timber, and the antiseptic property of wood sample and leach resistance is caused to become
Difference；There is very strong antiseptic property and leach resistance by the wood sample of the method for the present invention working process, stability is strong, uses
Safe, service life is long, great popularizing value and the market competitiveness.
Claims (4)
1. a kind of processing method of charing-Chinese herbal medicine-nano-particles reinforcement preserving timber, which is characterized in that include the following steps：
（1）Vacuum carbonized processing method：
Wood sample after drying is put into neatly packed in vacuum high-temperature treatment box, weight in pressure, chamber door is closed and vacuumizes, add
Heat is warming up to 95-105 DEG C, after keeping 30-35min, then is warming up to 200-220 DEG C of charing process 3-5h, stops heating, waits for vacuum
When the temperature inside the box is cooled to 55-65 DEG C, charing antisepsis timber is taken out；
（2）Hydro-thermal method prepares nano-titanium dioxide-Chinese herbal medicine composite anti-corrosive timber：
20-30 parts of Chinese herbal medicine Aqueous extracts are mixed with 15-25 parts of nano titanic oxide sols, is added in hydrothermal reaction kettle, is soaking
It is right under conditions of stain temperature is 88-92 DEG C（1）Middle gained charing antisepsis timber is modified processing 3-4h, then at 40-45 DEG C
It dries to constant weight in air dry oven；
（3）Preservative vacuum impregnation wood sample treatment process：
It will（2）Middle gained wood sample immerses in nano composite preservative solution, and vacuum impregnation handles 30- in vacuum tank
35min is drawn off after wood sample saturation is sunk, and the blotting paper crossed with sterilization absorbs its surface supernatant liquid, is put into
It is dried to constant weight in 40-45 DEG C of drying box.
2. a kind of processing method of charing-Chinese herbal medicine-nano-particles reinforcement preserving timber according to claim 1, special
Sign is, step（1）It is middle to immerse wood sample in distilled water, it is cleaned by ultrasonic 20-30min removal of impurities, then in 80-85 DEG C of air blast
It dries to constant weight in drying box.
3. a kind of processing method of charing-Chinese herbal medicine-nano-particles reinforcement preserving timber according to claim 1, special
Sign is, step（2）Middle water extraction prepares Chinese herbal medicine Aqueous extracts：
Solid-liquid ratio 1 is pressed into Chinese herbal medicine:Distilled water is added in 8-10, starts to boil after impregnating 30-35min, until by liquor strength
Concentration is filtered after being 0.6-0.8g/mL；
The Chinese herbal medicine is the mixed of any one or a few in pericarpium zanthoxyli, frutus cnidii, kuh-seng, the coptis, fructus forsythiae, the tuber of stemona, the fruit of summer cypress
It closes；
The pH value of the nano titanic oxide sol is 1-2.
4. a kind of processing method of charing-Chinese herbal medicine-nano-particles reinforcement preserving timber according to claim 1, special
Sign is, step（3）The wet grinding technique of middle nano cupric oxide and nano zine oxide compound preservative：
2-3 parts of nano cupric oxides and 2-3 parts of nano zine oxides are added into 200-300 parts of deionized waters, add 2-2.5 parts of tables
Face activating agent ammonium citrate, is put into grinder and is ground, and setting grinder rotating speed is 4000-5000rpm, is in pH value
2-3h is ground under conditions of 9.5-10.5, places into progress ultrasonic disperse 30-35min in supersonic generator, it is multiple that nanometer is made
Close antiseptic solution.
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Cited By (3)
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| CN110014488A (en) * | 2019-05-30 | 2019-07-16 | 西北农林科技大学 | A kind of timber preservative and its application |
| CN111702900A (en) * | 2020-06-10 | 2020-09-25 | 中国林业科学研究院木材工业研究所 | Method for preserving and reinforcing wood by using nanocellulose |
| CN115488982A (en) * | 2022-10-27 | 2022-12-20 | 滁州市吉事达家具制造有限公司 | Anticorrosion and mothproof treatment method for manufacturing solid wood board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110014488A (en) * | 2019-05-30 | 2019-07-16 | 西北农林科技大学 | A kind of timber preservative and its application |
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| CN115488982B (en) * | 2022-10-27 | 2023-04-07 | 滁州市吉事达家具制造有限公司 | Anticorrosion and mothproof treatment method for manufacturing solid wood board |
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Application publication date: 20181106 |